REFRIGERATOR

Abstract

A refrigerator includes a housing, a discharge device, a cold finger device, and at least two compression devices. A disassembly and assembly hole is provided on the housing located between the at least two third accommodating cavities arranged at intervals, and the disassembly and assembly hole is communicated with the first accommodating cavity and is configured for the disassembly and assembly of the discharge device. By arranging the disassembly and assembly hole, the disassembly and assembly steps of the discharge device are simplified, meeting the need of rapid testing of the compression device. By arranging the discharge device with a stepped piston, the service life of the discharge device is increased and the discharge device has higher reliability and consistency. By arranging a tree topology or net topology, the flow resistance of gas may be reduced and the refrigeration efficiency may be improved, achieving multi-stage refrigeration.

Description

TECHNICAL FIELD

The present application relates to the technical field of refrigerators, and in particular, to a refrigerator.

BACKGROUND

In the field of low-temperature refrigerators, refrigerators may include regenerative heat engines, G-M refrigerators, G-M type pulse tube refrigerators, Stirling refrigerators, Stirling type pulse tube refrigerators and the like. Where, the Stirling refrigerator utilizes the reciprocating motion of the piston to form periodic pressure fluctuations, and utilizes an evacuator that operates at low temperatures to adjust the sound field distribution of the refrigerator, so as to produce a cooling effect in the regenerative structure, having high efficiency.

In the related art, the evacuator is directly installed in a housing of a refrigerator, and a piston of the evacuator is coaxially arranged with a piston of a compressor to reduce the vibration of the refrigerator.

However, in the above-mentioned refrigerator, the disassembly and assembly steps of the evacuator are complicated, which cannot meet the needs of rapid testing of the compressor.

SUMMARY

In order to solve at least one problem mentioned in the background, the present application provides a refrigerator, aiming to solve the technical problem that disassembly and assembly steps of an evacuator of the refrigerator in the related art are complicated and thus cannot meet the needs of rapid testing of the compressor.

In order to achieve the above-mentioned object, the present application provides a refrigerator, which includes a housing, a discharge device, a cold finger device, and at least two compression devices, where

• • the housing has a first accommodating cavity, a second accommodating cavity and at least two third accommodating cavities, which are communicated with each other in pairs;
  • the discharge device is located in the first accommodating cavity, and the cold finger device is located in the second accommodating cavity;
  • the at least two compression devices are located in one-to-one correspondence inside the at least two third accommodating cavities, the at least two third accommodating cavities are arranged at intervals, and the first accommodating cavity is located between the at least two third accommodating cavities; and
  • a disassembly and assembly hole is provided on the housing located between the at least two third accommodating cavities arranged at intervals, and the disassembly and assembly hole is communicated with the first accommodating cavity and is configured for disassembly and assembly of the discharge device.

In an embodiment of the above-mentioned refrigerator, the housing has two third accommodating cavities, which are arranged at intervals along a first direction and located in opposite sides of the first accommodating cavity;

• • the two compression devices are located in one-to-one correspondence inside the two third accommodating cavities;
  • the first accommodating cavity is located between the two third accommodating cavities along the first direction; and
  • an axial direction of the disassembly and assembly hole is a second direction, which intersects with the first direction, and an opening of the disassembly and assembly hole faces external environment.

In an embodiment of the above-mentioned refrigerator, the discharge device includes two discharge assemblies arranged at intervals along the second direction, and the two discharge assemblies and the housing are jointly enclosed as a first expansion cavity; and

• • a first channel is provided on the housing between the first expansion cavity and the second accommodating cavity, and the first channel is configured to communicate the first expansion cavity with the second accommodating cavity.

In an embodiment of the above-mentioned refrigerator, the discharge assembly includes a piston, a discharge cylinder, and an elastic component;

• • a baffling structure is provided in a cavity of the discharge cylinder, the baffling structure divides the cavity of the discharge cylinder into a first cavity and a second cavity, a cylinder wall of the discharge cylinder is provided with a first through-hole, the baffling structure is provided with a second through-hole, and the first through-hole, the first cavity, the second through-hole, and the second cavity are sequentially communicated with each other;
  • a second channel is provided on the housing located between the first accommodating cavity and the third accommodating cavity, and the second channel corresponds to the first through-hole and is configured to communicate the first through-hole with the third accommodating cavity;
  • a portion of the piston is located in the first cavity of the discharge cylinder, and the other portion thereof passes through the second through-hole and is located in the second cavity; and
  • the elastic component is located in the second cavity of the discharge cylinder and is connected to the piston.

In an embodiment of the above-mentioned refrigerator, it further includes a cover plate, and the cover plate is located on one side of the discharge cylinder away from the opening of the disassembly and assembly hole and is spaced apart from the piston; and

• • an outer surface of one end of the piston near the elastic component and an outer surface of one end of the piston away from the elastic component are jointly enclosed with the housing to form a third cavity.

In an embodiment of the above-mentioned refrigerator, a third through-hole is provided on a cylinder wall of the discharge cylinder, and the third through-hole is communicated with the first cavity; and

• • a third channel is provided on the housing located between the first accommodating cavity and the second accommodating cavity, and the third channel corresponds to the third through-hole, and is configured to communicate the third through-hole with the second accommodating cavity.

In an embodiment of the above-mentioned refrigerator, the cold finger device is arranged extending along a third direction inside the second accommodating cavity; and

• • the third direction intersects with the first direction and intersects with the second direction.

In an embodiment of the above-mentioned refrigerator, the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;

• • the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;
  • a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configure to communicate the second accommodating cavity with the third accommodating cavity;
  • the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and
  • the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

In an embodiment of the above-mentioned refrigerator, the cold finger device includes a second regenerative component, a third heat exchange component and a second pulse component;

• • the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; and
  • a gas channel of the second pulse component is communicated with the first accommodating cavity.

In an embodiment of the above-mentioned refrigerator, a fifth channel is provided on the housing located between the second accommodating cavity and third accommodating cavity, the fifth channel is spaced apart from the fourth channel, the discharge device has a second expansion cavity, and the second expansion cavity is communicated with the gas channel of the second pulse component through the fifth channel.

The refrigerator provided in the present application includes a housing, a discharge device, a cold finger device, and at least two compression devices, where the housing has a first accommodating cavity, a second accommodating cavity, and at least two third accommodating cavities, which are communicated with each other in pairs. By arranging the aforementioned housing, the discharge device, the cold finger device, and the compression devices may be accommodated therein to achieve the refrigeration function of the refrigerator. The discharge device is located in the first accommodating cavity, the cold finger device is located in the second accommodating cavity; the at least two compression devices are located in one-to-one correspondence inside the at least two third accommodating cavities, the at least two third accommodating cavities are arranged at intervals, and the first accommodating cavity is located between the at least two third accommodating cavities. By arranging the first accommodating cavity between the at least two third accommodating cavities, i.e., arranging the discharge device between the at least two compression devices, the movement directions of the pistons of the at least two compression devices are opposite, and the vibrations generated by the movement of the pistons may cancel each other out, and furthermore, there is a small distance between the discharge device and the compression device and gas has a small flow distance, which may improve the refrigeration efficiency of the refrigerator. The housing further has a disassembly and assembly hole, and the disassembly and assembly hole is located on the housing between the at least two third accommodating cavities arranged at intervals, communicated with the first accommodating cavity and is configured for the disassembly and assembly of the discharge device. By arranging the disassembly and assembly hole on the housing between the at least two third accommodating cavities arranged at intervals and realizing the disassembly and assembly of the discharge device through the disassembly and assembly hole, the discharge device may be removed during the process of separate testing of the compression device without disassembling the compression device, which simplifies the disassembly and assembly steps of the discharge device, meeting the needs of rapid testing of the compression device.

The structure of the present application, as well as its other application purposes and beneficial effects will be more clearly and easily understood by the description of embodiments with reference to the accompanying drawings.

BRIEF DESCRIPTION OF DRAWINGS

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, the drawings required in the description of the embodiments or of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For the person skilled in the art, other drawings may further be obtained based on these drawings without creative work.

FIG. 1 is a partial exploded structural schematic diagram of a refrigerator provided in an embodiment of the present application.

FIG. 2 is another partial exploded structural schematic diagram of a refrigerator provided in an embodiment of the present application.

FIG. 3 is an exploded structural schematic diagram of a discharge assembly of a discharge device of a refrigerator provided in an embodiment of the present application.

FIG. 4 is another exploded structural schematic diagram of a discharge assembly of a discharge device of a refrigerator provided in an embodiment of the present application.

FIG. 5 is a partial structural schematic diagram of a housing of a refrigerator provided in an embodiment of the present application.

FIG. 6 is a schematic diagram of a cross-sectional structure along AA′ position in FIG. 5.

FIG. 7 is a schematic diagram of a cross-sectional structure along BB′ position in FIG. 5.

FIG. 8 is a schematic diagram of a cross-sectional structure along CC′ position in FIG. 5.

FIG. 9 is another partial structural schematic diagram of a housing of a refrigerator provided in an embodiment of the present application.

FIG. 10 is a schematic diagram of a cross-sectional structure along AA′ position in FIG. 9.

FIG. 11 is a schematic diagram of a cross-sectional structure along BB′ position in FIG. 9.

FIG. 12 is a schematic diagram of a cross-sectional structure along CC′ position in FIG. 9.

FIG. 13 is a schematic diagram of a cross-sectional structure of a discharge assembly of a discharge device of a refrigerator provided in an embodiment of the present application.

FIG. 14 is a schematic diagram of a cross-sectional structure along a direction of a refrigerator provided in an embodiment of the present application.

FIG. 15 is a schematic diagram of a cross-sectional structure along another direction of a refrigerator provided in an embodiment of the present application.

FIG. 16 is a schematic diagram of a cross-sectional structure along yet another direction of a refrigerator provided in an embodiment of the present application.

FIG. 17 is schematic diagram of a first gas flow process of a refrigerator provided in an embodiment of the present application.

FIG. 18 is schematic diagram of a second gas flow process of a refrigerator provided in an embodiment of the present application.

FIG. 19 is a schematic diagram of another cross-sectional structure of a discharge assembly of a discharge device of a refrigerator provided in an embodiment of the present application.

FIG. 20 is a schematic diagram of another cross-sectional structure along a direction of a refrigerator provided in an embodiment of the present application.

FIG. 21 is a schematic diagram of another cross-sectional structure along another direction of a refrigerator provided in an embodiment of the present application.

FIG. 22 is a schematic diagram of another cross-sectional structure along yet another direction of a refrigerator provided in an embodiment of the present application.

FIG. 23 is schematic diagram of a third gas flow process of a refrigerator provided in an embodiment of the present application.

FIG. 24 is schematic diagram of a fourth gas flow process of a refrigerator provided in an embodiment of the present application.

DESCRIPTION OF REFERENCE SIGNS

• • 100—refrigerator; 110—housing; 120—discharge device; 130—cold finger device; 140—compression device; 111—first accommodating cavity; 112—second accommodating cavity; 113—third accommodating cavity; 141—first compression cavity; 114—disassembly and assembly hole; X—first direction; Y—second direction; Z—third direction; 121—discharge assembly; 1101—first expansion cavity; 115—first channel; 1211—piston; 1212—discharge cylinder; 1213—elastic component; 12121—baffling structure; 12122—first cavity; 12123—second cavity; 12124—first through-hole; 12125—second through-hole; 116—second channel; 150—cover plate; 1102—second compression cavity; 12111—first sub-piston; 12112—second sub-piston; 1103—third cavity; 12126—third through-hole; 117—third channel; 131—first heat exchange component; 132—first regenerative component; 133—second heat exchange component; 134—first pulse component; 1104—fourth cavity; 1121—first heat exchange cavity; 1122—first regenerative cavity; 1123—second heat exchange cavity; 1124—first pulse cavity; 118—fourth channel; 135—second regenerative component; 136—third heat exchange component; 137—second pulse component; 1125—second regenerative cavity; 1126—third heat exchange cavity; 1127—second pulse cavity; 1105—second expansion cavity; 119—fifth channel.

Specific embodiments of the present application have been shown by the drawings above and will be described in more detail in the following. These drawings and textual descriptions are not intended to limit the scope of the conception of the present application in any way, but rather to illustrate the concept of the present application to the person skilled in the art by referring to specific embodiments.

DESCRIPTION OF EMBODIMENTS

In related art, both a compression device and a discharge device are located inside a housing of a refrigerator, and the discharge device is located between two compression devices and coaxially arranged with the compression devices, having high reliability. After the compression device is installed in the housing of the refrigerator, it is usually necessary to test the stability and usage of independent operation of the compression device. At this time, it is necessary to disassemble the discharge device located between the two compression devices, and the steps are complicated; when the discharge device malfunctions and needs to be repaired, it is necessary to disassemble the compression device first, and then remove the discharge device. The disassembly and assembly steps of the discharge device are cumbersome, increasing the production cost and maintenance cost of the refrigerator.

In view of the technical problems above, embodiments of the present application provide a refrigerator, which includes a housing, a discharge device, a cold finger device, and at least two compression devices. The housing has a first accommodating cavity, a second accommodating cavity and at least two third accommodating cavities, which are communicated with each other in pairs. By arranging the aforementioned housing, the discharge device, the cold finger device, and the compression devices may be accommodated therein to achieve the refrigeration function of the refrigerator. The discharge device is located in the first accommodating cavity, the cold finger device is located in the second accommodating cavity, and the at least two compression devices are located in one-to-one correspondence inside the at least two third accommodating cavities, and the at least two third accommodating cavities are arranged at intervals, and the first accommodating cavity is located between the at least two third accommodating cavities. By arranging the first accommodating cavity between the at least two third accommodating cavities, i.e., arranging the discharge device between the at least two compression devices, the movement directions of the pistons of the at least two compression devices are opposite, and the vibrations generated by the movement of the pistons may cancel each other out, and furthermore, there is a small distance between the discharge device and the compression devices, and a small gas flow distance, which may improve the refrigeration efficiency of the refrigerator. The housing further has a disassembly and assembly hole, and the disassembly and assembly hole is located on the housing between the at least two third accommodating cavities arranged at intervals, communicated with the first accommodating cavity and is configured for the disassembly and assembly of discharge device. By arranging the disassembly and assembly hole on the housing between the at least two third accommodating cavities arranged at intervals and realizing the disassembly and assembly of the discharge device through the disassembly and assembly hole, the discharge device may be removed during the process of separate testing of the compression device without disassembling the compression device, which simplifies disassembly and assembly steps of the discharge device, meeting the need of rapid testing of the compression device.

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in detail below in combination with the drawings in the embodiments of the present application. In the drawings, the same or similar numerals throughout the present application represent the same or similar structural components or structural components with the same or similar functions. The described embodiments are part of the embodiments of the present application, but not all embodiments. The embodiments described below with reference to the drawings are exemplary and intended to explain the present application, but shall not be understood as limits of the present application. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative work fall within the scope of protection of the present application. A detailed explanation of the embodiments of the present application will be provided in conjunction with the drawings below.

Referring to FIG. 1 to FIG. 24, the embodiments of the present application provide a refrigerator 100, including a housing 110, a discharge device 120, a cold finger device 130, and at least two compression devices 140.

Specifically, with reference to FIG. 5 to FIG. 12, the housing 110 has a first accommodating cavity 111, a second accommodating cavity 112 and at least two third accommodating cavities 113, which are communicated with each other in pairs. The discharge device 120 is located inside the first accommodating cavity 111, and the cold finger device 130 is located inside the second accommodating cavity 112.

It should be understood that each third accommodating cavity 113 is communicated with the first accommodating cavity 111 and communicated with the second accommodating cavity 112, so that the compression device 140 may push gas to the discharge device 120 and the cold finger device 130 to complete the refrigeration function of the refrigerator 100.

The at least two compression devices 140 are located in one-to-one correspondence inside the at least two third accommodating cavities 113, that is, there are at least two compression devices 140, which are located in corresponding third accommodating cavities 113.

It should be understood that the compression device 140 is used to push gas, and the gas may be formed in a first compression cavity 141, and the first compression cavity is located in the third accommodating cavity 113 on a side close to the first accommodating cavity 111 and the second accommodating cavity 112. When the refrigerator 100 has at least two compression devices 140, the refrigerator 100 will produce a great pressure fluctuation, which may improve the refrigeration efficiency of the refrigerator 100.

When the first accommodating cavity 111, the second accommodating cavity 112, and the third accommodating cavities 113 are communicated in pairs, the compression devices 140 may push the gas from the first compression cavity 141 into the first accommodating cavity 111 and the second accommodating cavity 112, so that the gas enters the discharge device 120 and the cold finger device 130.

Where, the at least two third accommodating cavities 113 are arranged at intervals, and the first accommodating cavity 111 is located between the at least two third accommodating cavities 113, that is, the discharge device 120 may be located between the at least two compression devices 140. This may reduce a distance between the first accommodating cavity 111 and the third accommodating cavities 113 compared with other arrangement ways, thereby shortening a flowing distance of gas in the compression devices 140 and improving the refrigeration efficiency of the refrigerator 100.

Referring to FIG. 1 and FIG. 2, the housing 110 further has a disassembly and assembly hole 114, which is used for the disassembly and assembly of the discharge device 120. That is, users may install and disassemble the discharge device 120 through the disassembly and assembly hole 114. The discharge device 120 may be removed during the process of separate testing of the compression device 140 without disassembling the compression device 140, which simplifies disassembly and assembly steps of the discharge device 120, meeting the need of rapid testing of the compression device 140.

Further, the disassembly and assembly hole 114 is located on the housing 110 between the at least two third accommodating cavities 113 arranged at intervals, and is communicated with the first accommodating cavity 111.

It should be noted that the number of the third accommodating cavities 113 may be arbitrary, exemplarily, the number of the third accommodating cavities 113 may be two, three, four, five, etc. The specific number of the third accommodating cavities 113 is not limited in the embodiments of the present application, nor is it limited to the above examples.

The following description is made with taking the number of the third accommodating cavities 113 as two as an example.

By arranging the above-mentioned housing 110, the discharge device 120, the cold finger device 130, and the compression devices 140 may be accommodated therein to achieve the refrigeration function of the refrigerator 100. By arranging the first accommodating cavity 111 between the at least two third accommodating cavities 113, i.e., arranging the discharge device 120 between the at least two compression devices 140, pistons 1211 of the two compression devices 140 have opposite movement directions, and vibrations generated by the movement of the pistons 1211 may cancel each other out. By arranging the disassembly and assembly hole 114 on the housing 110 located between the at least two third accommodating cavities 113 arranged at intervals, and achieving the disassembly and assembly of the discharge device 120 through the disassembly and assembly hole 114, the discharge device 120 may be removed during the process of separate testing of the compression device 140 without disassembling the compression device 140, which simplifies the disassembly and assembly steps of the discharge device 120, meeting the need of rapid testing of the compression device 140.

As an implementation, the housing 110 has two third accommodating cavities 113, which are arranged at intervals along a first direction X and located on opposite sides of the first accommodating cavity 111.

Referring to FIG. 1 and FIG. 2, the two compression devices 140 are located in one-to-one correspondence inside the at least two third accommodating cavities 113, the first accommodating cavity 111 is located between the two third accommodating cavities 113 along the first direction X, and an axial direction of the disassembly and assembly hole 114 is a second direction Y, which intersects with the first direction X, with the opening of the disassembly and assembly hole 114 facing the external environment.

Further, the second direction Y may be perpendicular to the first direction X.

By arranging the number of the third accommodating cavity 113 as two, i.e., the number of the compression device 140 is two, compression pistons of the two compression devices 140 have opposite movement directions, and vibrations generated by the movement of the compression pistons may cancel each other out. By arranging the axial direction of the disassembly and assembly hole 114 to enable the direction of the opening of the disassembly and assembly hole 114 facing the external environment to intersect with the direction of the arrangement of the compression devices 140, then users may install or remove the discharge device 120 along the second direction Y without disassembling the compression device 140, which may simplify the disassembly and assembly steps of the discharge device 120 and meet the need of rapid testing of the compression device 140.

As an implementation, referring to FIG. 1 and FIG. 2, the discharge device 120 includes two discharge assemblies 121 arranged at intervals along the second direction Y, and the two discharge assemblies 121 are jointly enclosed with the housing 110 to form a first expansion cavity 1101. A first channel 115 is provided on the housing 110 between the first expansion cavity 1101 and the second accommodating cavity 112, and is configured to communicate the first expansion cavity 1101 with the second accommodating cavity 112.

By providing the discharge assemblies 121 arranged in the second direction Y, it is convenient for users to install or remove the discharge device 120 through the disassembly and assembly hole 114 without disassembling the compression device 140, which may simplify disassembly and assembly steps of the discharge device 120, meeting the need of rapid testing of the compression device 140. By forming the first expansion cavity 1101 and the first channel 115, the first expansion cavity 1101 is communicated with the second accommodating cavity 112 through the first channel 115, i.e., the cold finger device 130 and the discharge device 120 may be communicated with each other through the first channel 115, so that the discharge device 120 may recover acoustic work and the refrigeration function of the refrigerator 100 is completed.

As an implementation, referring to FIG. 1 and FIG. 2, the cold finger device 130 extends along a third direction Z inside the second accommodating cavity 112, and the third direction Z intersects with the first direction X and intersects with the second direction Y.

Further, the third direction Z may be perpendicular to the first direction X, and also may be perpendicular to the second direction Y.

By arranging the cold finger device 130 that extends along the third direction Z and the third direction Z being perpendicular to the first direction X and the second direction Y respectively, i.e., the extension direction of the cold finger device 130 being perpendicular to the extension directions of the discharge device 120 and the compression device 140 respectively, the space utilization rate of the refrigerator 100 may be improved.

As an implementation, referring to FIG. 3, FIG. 4, FIG. 13 and FIG. 19, the discharge assembly 121 includes a piston 1211, a discharge cylinder 1212, and an elastic component 1213.

Specifically, the cavity of the discharge cylinder 1212 is internally provided with a baffling structure 12121, which may divide the cavity of the discharge cylinder 1212 into a first cavity 12122 and a second cavity 12123. The cylinder wall of the discharge cylinder 1212 is further provided with a first through-hole 12124, and the baffling structure 12121 is provided with a second through-hole 12125. The first through-hole 12124, the first cavity 12122, the second through-hole 12125 and the second cavity 12123 are sequentially communicated.

A second channel 116 is further provided on the housing 110 located between the first accommodating cavity 111 and the third accommodating cavity 113. The second channel 116 corresponds to the first through-hole 12124, and is configured to communicate the first through-hole 12124 with the first compression cavity 141. That is, the gas pushed by the compression device 140 passes from the first compression cavity 141 through the second channel 116, the first through-hole 12124, the first cavity 12122, the second through-hole 12125, and the second cavity 12123 in sequence. That is, gas may enter the first cavity 12122 from the first compression cavity 141 through the second channel 116 and the first through-hole 12124, and then enter the second cavity 12123 through the second through-hole 12125.

Further, a portion of the piston 1211 is located in the first cavity 12122 of the discharge cylinder 1212, and the other portion thereof passes through the second through-hole 12125 and is located in the second cavity 12123. The elastic component 1213 is located in the second cavity 12123 of the discharge cylinder 1212 and connected to the piston 1211. The elastic component 1213 is arranged near the opening of the disassembly and assembly hole 114.

It should be understood that when a portion of the piston 1211 is located in the first cavity 12122 of the discharge cylinder 1212, the piston 1211 and the discharge cylinder 1212 are arranged at intervals and form a second compression cavity 1102. The gas pushed by the compression device 140 may sequentially pass from the first compression cavity 141 through the second channel 116, the first through-hole 12124, the first cavity 12122, and the second compression cavity 1102, i.e., the first compression cavity 141 is communicated with the second compression cavity 1102. As the gas is pushed, the second compression cavity 1102 changes in size, driving the piston 1211 to move along the second direction Y, thereby causing elastic deformation of the elastic component 1213.

It should be noted that the elastic component 1213 may be a leaf spring, which may be connected to the piston 1211 through a threaded connector.

It should be understood that the piston 1211 may include a first sub-piston 12111 and a second sub-piston 12112. The size of the first sub-piston 12111 may be different from the size of the second sub-piston 12112, for example, the diameter of the first sub-piston 12111 may be greater than the diameter of the second sub-piston 12112. The first sub-piston 12111 is located in the first cavity 12122, and the second sub-piston 12112 passes through the second through-hole 12125 and is connected to the elastic component 1213. The first sub-piston 12111, the second sub-piston 12112, and the discharge cylinder 1212 are jointly enclosed to form the second compression cavity 1102.

It should be noted that the first sub-piston 12111 and the second sub-piston 12112 may be connected through threads or formed as a whole. The connection relationship between the first sub-piston 12111 and the second sub-piston 12112 is not limited in embodiments of the present application, nor is it limited to the above examples.

By arranging the above-mentioned discharge assembly 121, a first expansion cavity 1101 and a second compression cavity 1102 are respectively formed at two sides of the piston 1211 of the discharge assembly 121, and the piston 1211 undergoes reciprocating motion under the driving of pressure on both sides. The first sub-piston 12111 and the second sub-piston 12112 form a stepped piston, which may reduce the demand for the discharge assembly 121 to the elastic component 1213. For example, the leaf spring needs to have large stiffness and amplitude, if the discharge assembly 121 with stepped piston is adopted, the leaf spring with a smaller stiffness may be used or there is no need for leaf spring, reducing the friction force between the stepped piston and the inner wall of the discharge cylinder 1212, and further enhancing the service life of the discharge assembly 121. In addition, the driving force of the stepped piston mainly comes from an area difference rather than a pressure difference, thereby allowing the refrigerator 100 to achieve high reliability and consistency.

As an implementation, referring to FIG. 1, FIG. 2, FIG. 15 and FIG. 21, a cover plate 150 is further included, and the cover plate 150 is located on a side of the discharge cylinder 1212 away from the opening of the disassembly and assembly hole 114 and is spaced apart from the piston 1211. The outer surface of one end of the piston 1211 near the elastic component 1213 and the outer surface of one end of the piston 1211 far away from the elastic component 1213 are jointly enclosed with the housing 110 to form a third cavity 1103.

It should be understood that the cover plate 150 may be connected to the housing 110 through a threaded connector or laser welding. The specific connection mode between the cover plate 150 and the housing 110 is not limited in embodiments of the present application, nor is it limited to the above examples.

By arranging the above-mentioned cover plate 150, the third cavity 1103 may be formed, and the third cavity 1103 may cooperate with the first expansion cavity 1101 and the second compression cavity 1102 to achieve acoustic work recovery.

As an implementation, referring to FIG. 21, the discharge cylinder 1212 further has a third through-hole 12126, which is communicated with the first cavity 12122. The housing 110 further has a third channel 117. The third channel 117 is arranged on the housing 110 located between the first accommodating cavity 111 and the second accommodating cavity 112, and the third channel 117 corresponds to the third through-hole 12126, and is configured to communicate the third through-hole 12126 with the second accommodating cavity 112.

It should be noted that the third through-hole 12126 is communicated with the second compression cavity 1102.

By providing a third through-hole 12126 on the discharge cylinder 1212 and a third channel 117 at a corresponding position of the housing 110, the discharge cylinder 1212 may be communicated with the second accommodating cavity 112, that is, the second accommodating cavity 112 is communicated with the second compression cavity 1102. The second compression cavity 1102 and the second accommodating cavity 112 are communicated with each other through the third channel 117 and the third through-hole 12126, and the second compression cavity 1102 and the first compression cavity 141 are communicated with each other through the second channel 116 and the first through-hole 12124, forming a network communication structure. In the case of the same volume space, channel between the first compression cavity 141 and the second compression cavity 1102 is increased in number, which may reduce the gas flow rate of the refrigerator 100, thereby improving the refrigeration efficiency of refrigerator 100.

As an implementation, referring to FIG. 14 to FIG. 16 and FIG. 20 to FIG. 22, the cold finger device 130 includes a first heat exchange component 131, a first regenerative component 132, a second heat exchange component 133, and a first pulse component 134.

Specifically, the first heat exchange component 131, the first regenerative component 132, the second heat exchange component 133, and the first pulse component 134 all have a gas channel. The first heat exchange component 131, the first regenerative component 132, the second heat exchange component 133, and the first pulse component 134 may be arranged adjacent to each other in sequence. That is, after the gas pushed by the compression device 140 enters the second accommodating cavity 112 from the first compression cavity 141, it passes through the gas channel of the first heat exchange component 131, the gas channel of the first regenerative component 132, the gas channel of the second heat exchange component 133, and the gas channel of the first pulse component 134 to enter the first expansion cavity 1101.

Further, the second accommodating cavity 112 may include a plurality of spaces, that is, the second accommodating cavity 112 may include a fourth cavity 1104, a first heat exchange cavity 1121, a first regenerative cavity 1122, a second heat exchange cavity 1123, and a first pulse cavity 1124. The fourth cavity 1104, the first heat exchange cavity 1121, the first regenerative cavity 1122, the second heat exchange cavity 1123, and the first pulse cavity 1124 are sequentially communicated. Where, the first heat exchange component 131 is located in the first heat exchange cavity 1121, the first regenerative component 132 is located in the first regenerative cavity 1122, the second heat exchange component 133 is located in the second heat exchange cavity 1123, and the first pulse component 134 is located in the first pulse cavity 1124. That is, the gas pushed by the compression device 140, after entering the second accommodating cavity 112 from the first compression cavity 141, passes through the fourth cavity 1104, the first heat exchange cavity 1121, the first regenerative cavity 1122, the second heat exchange cavity 1123 and the first pulse cavity 1124 in sequence to enter the first expansion cavity 1101.

Referring to FIG. 7, FIG. 11, FIG. 14 and FIG. 20, a fourth channel 118 is further provided on the housing 110 located between the second accommodating cavity 112 and the third accommodating cavity 113, and the fourth channel is configured to communicate the second accommodating cavity 112 with the third accommodating cavity 113.

Further, the first heat exchange component 131 is located within the second accommodating cavity 112 near the fourth channel 118, and the gas channel of the first heat exchange component 131 is communicated with the fourth channel 118; the first pulse component 134 is located within the second accommodating cavity 112 near the first accommodating cavity 111, and the gas channel of the first pulse component 134 is communicated with the first accommodating cavity 111.

By arranging the above-mentioned cold finger device 130, the gas pushed by the compression device 140 may enter the first heat exchange cavity 1121 from the first compression cavity 141 through the fourth channel 118, and the fourth cavity 1104. The first heat exchange component 131 located in the first heat exchange cavity 1121 may release heat, and the gas enters the first regenerative component 132 located in the first regenerative cavity 1122 after passing through the first heat exchange component 131; after passing through the first regenerative component 132, the gas enters the second heat exchange component 133 located in the second heat exchange cavity 1123; the second heat exchange component 133 absorbs heat, and the gas passes through the second heat exchange component 133 to generate cooling capacity, forming a refrigeration effect, and the gas enters the first pulse component 134 located in the first pulse cavity 1124; after passing through the first pulse component 134, the gas enters the first expansion cavity 1101.

In some embodiments, referring to FIG. 14 to FIG. 17, a flow process of the gas of the refrigerator 100 is as follows:

Part of the gas pushed by the compression device 140 passes through the first compression cavity 141, the second channel 116, and the first through-hole 12124 of the discharge cylinder 1212 to sequentially enter the first cavity 12122 and the second compression cavity 1102 to drive the piston 1211 to move; meanwhile, another part of the gas pushed by the compression device 140 passes through the fourth channel 118 from the first compression cavity 141, and sequentially passes through the fourth cavity 1104, the first heat exchange cavity 1121, the first regenerative cavity 1122, the second heat exchange cavity 1123, the first pulse cavity 1124, and the first channel 115 into the first expansion cavity 1101 between the two discharge assemblies 121, so as to drive the piston 1211 to move along an opposite direction. The first expansion cavity 1101 and the second compression cavity 1102, in conjunction with the third cavity 1103, may better achieve acoustic work recovery.

In other embodiments, referring to FIG. 14 to FIG. 16 and FIG. 18, when the discharge cylinder 1212 further has a third through-hole 12126 and the housing 110 further has a third channel 117, the first accommodating cavity 111 is communicated with the second accommodating cavity 112, i.e., the fourth cavity 1104 is communicated with the second compression cavity 1102. The second compression cavity 1102 and the fourth cavity 1104 are communicated with each other through the third channel 117 and the third through-hole 12126. The second compression cavity 1102 and the first compression cavity 141 are communicated with each other through the second channel 116 and the first through-hole 12124. The channel between the first compression cavity 141 and the second compression cavity 1102 is increased in number, and in the case of the same volume space, the flow rate of the gas of the refrigerator 100 may be reduced, thereby improving the refrigeration efficiency of the refrigerator 100.

As an implementation, referring to FIG. 20 to FIG. 22, the cold finger device 130 further includes a second regenerative component 135, a third heat exchange component 136 and a second pulse component 137.

Specifically, the second regenerative component 135, the third heat exchange component 136 and the second pulse component 137 all have a gas channel. The second regenerative component 135, the third heat exchange component 136 and the second pulse component 137 are sequentially arranged adjacent to each other and all located between the first heat exchange component 131 and the first regenerative component 132. The gas channel of the second regenerative component 135 is communicated with the gas channel of the first heat exchange component 131, the gas channel of the first regenerative component 132 is communicated with the gas channel of the third heat exchange component 136, and the gas channel of the second pulse component 137 is communicated with the first accommodating cavity 111. That is, after the gas pushed by the compression device 140 enters the gas channel of the third heat exchange component 136, a portion of the gas enters the gas channel of the first regenerative component 132, and the other portion of the gas enters the gas channel of the second pulse component 137.

Further, the gas entering the gas channel of the first regenerative component 132 sequentially passes through the gas channel of the second heat exchange component 133, the gas channel of the first pulse component 134 and the first channel 115 to enter the first expansion cavity 1101 so as to drive the piston 1211 to move.

Furthermore, the second accommodating cavity 112 may further include a second regenerative cavity 1125, a third heat exchange cavity 1126 and a second pulse cavity 1127. The second regenerative cavity 1125, the third heat exchange cavity 1126 and the second pulse cavity 1127 sequentially communicated. Where, the second regenerative component 135 is located in the second regenerative cavity 1125, the third heat exchange component 136 is located in the third heat exchange cavity 1126, and the second pulse component 137 is located in the second pulse cavity 1127. After the gas pushed by the compression device 140 enters the third heat exchange cavity 1126, a portion of the gas enters the first regenerative cavity 1122, and the other portion of the gas enters the second pulse cavity 1127. Where, the gas entering the first regenerative cavity 1122 passes through the second heat exchange cavity 1123, the first pulse cavity 1124 and the first channel 115 in sequence to enter the first expansion cavity 1101.

As an implementation, referring to FIG. 9 to FIG. 12 and FIG. 20 to FIG. 21, a fifth channel 119 is further provided on the housing 110 located between the second accommodating cavity 112 and third accommodating cavity 113, and the fifth channel 119 is spaced apart from the fourth channel 118. The discharge device 120 has a second expansion cavity 1105, which is communicated with the gas channel of the second pulse component 137 through the fifth channel 119.

It should be understood that the gas entering the gas channel of the second pulse component 137 passes through the fifth channel 119 and enters the second expansion cavity 1105 to drive the piston 1211 to move.

It should be noted that the second expansion cavity 1105 may be located between the first expansion cavity 1101 and the second compression cavity 1102 in the second direction Y, the second expansion cavity 1105 may be formed by the piston 1211 and the discharge cylinder 1212. When the piston 1211 moves, the size of the second expansion cavity 1105 may be changed and thus the gas entering the second expansion cavity 1105 and the gas entering the first expansion cavity 1101 may make the piston 1211 to move along an opposite direction. At the same time, the gas entering the second expansion cavity 1105 and the gas entering the second compression cavity 1102 may further make the piston 1211 to move along the opposite direction, which may better achieve acoustic work recovery.

Further, the first expansion cavity 1101 corresponds to the first regenerative component 132, and the second expansion cavity 1105 corresponds to the second regenerative component 135.

In some embodiments, referring to FIG. 20 to FIG. 23, a flow process of the gas of the refrigerator 100 after passing through the first heat exchange cavity 1121 is as follows:

The gas passing through the first heat exchange cavity 1121 sequentially passes through the second regenerative cavity 1125 and the third heat exchange cavity 1126. A portion of the gas passing through the third heat exchange cavity 1126 sequentially passes through the first regenerative cavity 1122, the second heat exchange cavity 1123, the first pulse cavity 1124, and the first channel 115, and enters the first expansion cavity 1101 located between the two discharge assemblies 121 to drive the piston 1211 to move; at the same time, the other portion of the gas passing through the third heat exchange cavity 1126 enters the second expansion cavity 1105 through the second pulse cavity 1127 and the fifth channel 119 to drive the piston 1211 to move along an opposite direction. The first expansion cavity 1101, the second compression cavity 1102 and the second expansion cavity 1105, are in conjunction with the third cavity 1103 to achieve better acoustic work recovery.

In other embodiments, referring to FIG. 9 to FIG. 12, FIG. 21, FIG. 22 and FIG. 24, when the discharge cylinder 1212 further has the third through-hole 12126 and the housing 110 further has the third channel 117, the first accommodating cavity 111 is communicated with the second accommodating cavity 112, i.e., the fourth cavity 1104 is communicated with the second compression cavity 1102. The second compression cavity 1102 and the fourth cavity 1104 are communicated through the third channel 117 and the third through-hole 12126, the second compression cavity 1102 and the first compression cavity 141 are communicated through the second channel 116 and the first through-hole 12124, and the channel between the first compression cavity 141 and the second compression cavity 1102 is increased in number, and in the case of the same volume space, the flow rate of the gas of the refrigerator 100 may be reduced, thereby improving the refrigeration efficiency of the refrigerator 100.

In the description of the embodiments of the present application, it should be understood that unless otherwise specified and limited, the terms “install”, “connect to”, and “connect with” should be broadly understood. For example, they may be fixed connections, may be indirect connections through intermediate medium, may be communication between internal structures of two components, or interactions between two components. For the person skilled in the art, the specific meanings of the above terms in the present application may be understood based on specific circumstances.

The orientation or position relationship indicated by the terms “up”, “down”, “front”, “back”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside” are based on the orientation or position relationship shown in the drawings, and are only for describing the present application and simplifying the description, but are not for indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, therefore, they should not be understood as a limitation on the present application. In the description of the present application, “a plurality of” means two or more, unless otherwise specified in a precise and specific manner.

The terms “first”, “second”, “third”, “fourth”, etc. in the specification and claims of the present application, as well as in the drawings, are used to distinguish similar objects, without necessarily describing a specific order or sequence. It should be understood that such data may be interchanged in appropriate cases, so that the embodiments of the present application described here may be implemented in other orders than those illustrated or described here. In addition, the terms “include” and “have”, as well as any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device, which includes a series of steps or units is not necessarily limited to those steps or units which are explicitly listed, but may include other steps or units which are not explicitly listed or inherent to such process, method, product or device.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, the persons skilled in the art should understand that they may still modify the technical solutions recorded in the aforementioned embodiments, or equivalently replace some or all technical features therein; while these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present application.

Claims

1. A refrigerator, comprising a housing, a discharge device, a cold finger device and at least two compression devices, wherein the housing has a first accommodating cavity, a second accommodating cavity, and at least two third accommodating cavities, which are communicated with each other in pairs;the discharge device is located in the first accommodating cavity;the cold finger device is located in the second accommodating cavity;the at least two compression devices are located in one-to-one correspondence inside the at least two third accommodating cavities, at least two third accommodating cavities are arranged at intervals, and the first accommodating cavity is located between the at least two third accommodating cavities; anda disassembly and assembly hole is provided on the housing located between the at least two third accommodating cavities arranged at intervals, and the disassembly and assembly hole is communicated with the first accommodating cavity and is configured for disassembly and assembly of the discharge device.

2. The refrigerator according to claim 1, wherein the housing has two third accommodating cavities, which are arranged at intervals along a first direction and located in opposite sides of the first accommodating cavity; two compression devices are located in one-to-one correspondence inside the two third accommodating cavities;the first accommodating cavity is located between the two third accommodating cavities along the first direction; andan axial direction of the disassembly and assembly hole is a second direction, which intersects with the first direction, and an opening of the disassembly and assembly hole faces external environment.

3. The refrigerator according to claim 2, wherein the discharge device comprises two discharge assemblies arranged at intervals along the second direction, and the two discharge assemblies and the housing are jointly enclosed to form a first expansion cavity; and a first channel is provided on the housing between the first expansion cavity and the second accommodating cavity, and the first channel is configured to communicate the first expansion cavity with the second accommodating cavity.

4. The refrigerator according to claim 3, wherein the discharge assembly comprises a piston, a discharge cylinder, and an elastic component; a baffling structure is provided in a cavity of the discharge cylinder, the baffling structure divides the cavity of the discharge cylinder into a first cavity and a second cavity, a cylinder wall of the discharge cylinder is provided with a first through-hole, the baffling structure is provided with a second through-hole, and the first through-hole, the first cavity, the second through-hole, and the second cavity are sequentially communicated;a second channel is provided on the housing located between the first accommodating cavity and the third accommodating cavity, and the second channel corresponds to the first through-hole and is configured to communicate the first through-hole with the third accommodating cavity;a portion of the piston is located in the first cavity of the discharge cylinder, and the other portion thereof passes through the second through-hole and is located in the second cavity; andthe elastic component is located in the second cavity of the discharge cylinder and is connected to the piston.

5. The refrigerator according to claim 4, further comprising a cover plate, wherein the cover plate is located on one side of the discharge cylinder away from the opening of the disassembly and assembly hole and is spaced apart from the piston; and an outer surface of one end of the piston near the elastic component and an outer surface of one end of the piston away from the elastic component are jointly enclosed with the housing to form a third cavity.

6. The refrigerator according to claim 4, wherein a third through-hole is provided on a cylinder wall of the discharge cylinder, and the third through-hole is communicated with the first cavity; and a third channel is provided on the housing located between the first accommodating cavity and the second accommodating cavity, and the third channel corresponds to the third through-hole, and is configured to communicate the third through-hole with the second accommodating cavity.

7. The refrigerator according to claim 2, wherein the cold finger device is arranged extending inside the second accommodating cavity along a third direction; and the third direction intersects with the first direction and intersects with the second direction.

8. The refrigerator according to claim 1, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

9. The refrigerator according to claim 2, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

10. The refrigerator according to claim 3, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

11. The refrigerator according to claim 4, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

12. The refrigerator according to claim 5, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

13. The refrigerator according to claim 6, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

14. The refrigerator according to claim 7, wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component; the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; andthe first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.

15. The refrigerator according to claim 8, wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component; the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; anda gas channel of the second pulse component is communicated with the first accommodating cavity.

16. The refrigerator according to claim 9, wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component; the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; anda gas channel of the second pulse component is communicated with the first accommodating cavity.

17. The refrigerator according to claim 10, wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component; the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; anda gas channel of the second pulse component is communicated with the first accommodating cavity.

18. The refrigerator according to claim 11, wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component; the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; anda gas channel of the second pulse component is communicated with the first accommodating cavity.

19. The refrigerator according to claim 14, wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component; the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; anda gas channel of the second pulse component is communicated with the first accommodating cavity.

20. The refrigerator according to claim 15, wherein a fifth channel is provided on the housing located between the second accommodating cavity and third accommodating cavity, the fifth channel is spaced apart from the fourth channel, the discharge device has a second expansion cavity, and the second expansion cavity is communicated with the gas channel of the second pulse component through the fifth channel.