Patent Application
20230358486
The present disclosure relates to a field of heat exchange technologies, and more particularly, to a heat exchanger and an air conditioning unit having multiple refrigeration systems including the heat exchanger.
An air conditioning having multiple refrigeration systems adopts a plurality of separate refrigerant circuits. In the related art, the plurality of refrigerant circuits may adopt a parallel-flow heat exchanger as a heat exchanger shared by multiple systems, and the parallel-flow heat exchanger in the system share one fan system and one ventilation surface.
During operation under partial load, the refrigerant flows in part of the refrigerant circuit in the air conditioner having multiple refrigeration systems, while no refrigerant flow in the other part of the refrigerant circuit. Therefore, the shared parallel-flow heat exchanger requires different refrigeration circuits, a plurality of flow collecting components, such as headers, for refrigerant distribution. The flow collecting components do not participate in the heat exchange, which reduces utilization rate of the heat exchange area on the ventilation surface and affects the heat exchange performance. Therefore, this effect needs to be improved.
A heat exchanger according to embodiments of a first aspect of the present disclosure includes a first collecting tube and a second collecting tube, the first collecting tube including a first peripheral wall and a first main channel, and a wall surrounding the first main channel including the first peripheral wall; a plurality of heat exchange tubes spaced apart along a length direction of the first collecting tube, the heat exchange tube being coupled to the first collecting tube, the heat exchange tube being coupled to the second collecting tube, the plurality of heat exchange tubes including a plurality of first heat exchange tubes and a plurality of second heat exchange tubes, the first heat exchange tube and the second heat exchange tube being alternately arranged along the length direction of the first collecting tube, and at least two second heat exchange tubes being arranged adjacent to the first heat exchange tube in the length direction of the first collecting tube; a first assembly located in the first main channel, the first main channel including a first flow channel and a second flow channel, at least part of the first assembly being fixedly coupled to an inner wall surface of the first collecting tube, the first flow channel including a first channel and a plurality of first lumens, the first channel extending in the length direction of the first collecting tube and in communication with the plurality of first lumens, the second flow channel including a second channel and a plurality of second lumens, the second channel extending in the length direction of the first collecting tube and in communication with the plurality of second lumens, the first lumen and the second lumen being alternately arranged along the length direction of the first collecting tube, the first assembly separating the first lumen from the second lumen, the first lumen and the second lumen being not in communication with each other, the first lumen being in communication with the first heat exchange tube, and the second lumen being in communication with the second heat exchange tube; a first inlet-outlet tube in communication with the first channel; and a second inlet-outlet tube in communication with the second channel.
An air conditioning unit having multiple refrigeration systems according to embodiments of a second aspect of the present disclosure includes a plurality of refrigeration systems, at least two refrigeration systems of the plurality of refrigeration systems share at least one heat exchanger, the heat exchanger is an evaporator and/or a condenser of the at least two refrigeration systems, and the heat exchanger is a heat exchanger described in any one of the above embodiments.
Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in accompanying drawings. The following embodiments described with reference to the accompanying drawings are illustrative and are only intended to explain the present disclosure, rather than limit the present disclosure. In the description of the present disclosure, it shall be understood that terms such as “central,” “longitudinal,” “transverse,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial” and “circumferential” should be construed to refer to the orientation and position as then described or as shown in the drawings under discussion. These relative terms are only for convenience of description and do not indicate or imply that the device or element referred to must have a particular orientation, or be constructed and operated in a particular orientation. Thus, these terms shall not be construed as limitation on the present disclosure.
As illustrated in
The first collecting tube 11 includes a first peripheral wall 111 and a first main channel 112 surrounded by the first peripheral wall 111. As illustrated in
The plurality of heat exchange tubes 2 are spaced apart in a length direction of the first collecting tube 11 (a left-right direction as illustrated in
As illustrated in
The first assembly 3 is located in the first main channel 112, the first main channel 112 includes a first flow channel 113 and a second flow channel 114, and at least part of the first assembly 3 is fixedly coupled to an inner wall surface of the first collecting tube 11.
As illustrated in
The first flow channel 113 includes a first channel 1131 and a plurality of first lumens 1132, and the first channel 1131 extends in the length direction of the first collecting tube 11 and is in communication with the plurality of first lumens 1132. The second flow channel 114 includes a second channel 1141 and a plurality of second lumens 1142, the second channel 1141 extends in the length direction of the first collecting tube 11 and is in communication with the plurality of second lumens 1142.
The first lumen 1132 and the second lumen 1142 are alternately arranged along the length direction of the first collecting tube 11, the first assembly 3 separates the first lumen 1132 from the second lumen 1142, and the first lumen 1132 and the second lumen 1142 are not in communication with each other. The first lumen 1132 is in communication with the first heat exchange tube 21, and the second lumen 1142 is in communication with the second heat exchange tube 22. It can be understood that the alternate arrangement means that the first lumen 1132 and the second lumen 1142 which are provided in a same number are arranged along the length direction of the first collecting tube 11, or the first lumen 1132 and the second lumen 1142 which are provided in different numbers are arranged along the length direction of the first collecting tube 11. The alternate arrangement requires that at least two first lumens are arranged adjacent to the second lumen on two sides of the length direction of the first collecting tube 11, respectively, or at least two second lumens are arranged adjacent to the first lumen on two sides of the length direction of the first collecting tube 11, respectively.
As illustrated in
The first inlet-outlet tube 13 is in communication with the first channel 1131, and the second inlet-outlet tube 14 is in communication with the second channel 1141. As illustrated in
In the heat exchanger according to embodiments of the present disclosure, the first collecting tube and the second collecting tube are arranged, the plurality of first heat exchange tubes and the plurality of second heat exchange tubes are arranged between the first collecting tube and the second collecting tube, and the plurality of first heat exchange tubes and the plurality of second heat exchange tubes are alternately arranged along the length direction of the first collecting tube. The first assembly is arranged in the first collecting tube to allow the first main channel in the first collecting tube to include the first flow channel and the second flow channel. The first flow channel includes the first channel and the plurality of first lumens, and the plurality of first lumens are coupled to the plurality of first heat exchange tubes, respectively. The second flow channel includes the second channel and the plurality of second lumens, and the plurality of second lumens are coupled to the plurality of second heat exchange tubes, respectively. Therefore, when the heat exchanger is applied in an air conditioning unit having multiple refrigeration systems, a refrigerant may only circulate in the first flow channel and the first heat exchange tube, or the refrigerant may only circulate in the second flow channel and the second heat exchange tube, or the refrigerant may not only circulate in the first flow channel and the first heat exchange tube, but also circulate in the second flow channel and the second heat exchange tube. In the heat exchanger, multiple systems can share the first collecting tube, thus improving the utilization rate of the heat exchange area, and simultaneously reducing temperature difference at joints of heat exchange tubes in different systems with the first collecting tube and the second collecting tube under a partial load, such that thermal stress concentration of the system is reduced, which is conducive to improving the service life of the heat exchanger.
In some embodiments, as illustrated in
The third end of the body member 31 and the fourth end of the body member 31 abut with the inner wall surface of the first collecting tube 11. A minimum distance between the first end of the body member 31 and the second end of the body member 31 is greater than a width of the first heat exchange tube 21, and the minimum distance between the first end of the body member 31 and the second end of the body member 31 is greater than a width of the second heat exchange tube 22.
The first assembly 3 further includes a first coupling member 32, and the first coupling member 32 extends in the length direction of the first collecting tube 11. One end of the first coupling member 32 (a left end of the first coupling member 32 as illustrated in
As illustrated in
The first assembly 3 includes a plurality of body members 31 and a plurality of first coupling members 32.
The plurality of body members 31 extend in the front-rear direction and are arranged along the left-right direction, and adjacent body members 31 are spaced apart from each other. The lower end of the body member 31 is coupled to a bottom wall of the first peripheral wall 111, and the upper end of the body member 31 is coupled to a top of the first peripheral wall 111.
A minimum distance from the front end of the body member 31 to the rear end of the body member 31 is a length of the body member 31. The length of the body member 31 is greater than the width of the first heat exchange tube 21 and the width of the second heat exchange tube 22.
The first coupling member 32 extends in the left-right direction. The left end of the first coupling member 32 is coupled to the front end of one body member 31, and the right end of the first coupling member 32 is coupled to the front end of another body member 31. The first gap 321 is defined between a front side surface of the first coupling member 32 and a front wall of the first peripheral wall 111, and the first channel 1131 includes the first gap 321.
In some embodiments, as illustrated in
As illustrated in
In some embodiments, three adjacent body members 31 of the plurality of body members 31 in the length direction of the first collecting tube 11 are defined as a first body member 311, a second body member 312 and a third body member 313. The first body member 311 and the second body member 312 are adjacent in the length direction of the first collecting tube 11, the second body member 312 and the third body member 313 are adjacent in the length direction of the first collecting tube 11, and a direction from the first body member 311 to the second body member 312 are the same as a direction from the second body member 312 to the third body member 313.
As illustrated in
A plurality of first coupling members 32 are provided and arranged along the length direction of the first collecting tube 11. One end of the first coupling member 32 (the left end of the first coupling member 32 as illustrated in
As illustrated in
A plurality of second coupling members 33 are provided and arranged along the length direction of the first collecting tube 11. One end of the second coupling member 33 (the left end of the second coupling member 33 as illustrated in
As illustrated in
In some embodiments, a peripheral wall surrounding the first lumen 1132 includes the second body member 312, the third body member 313, the second coupling member 33 coupling the second end of the second body member 312 and the second end of the third body member 313, and the inner wall of the first collecting tube 11. The first lumen 1132 is in communication with the first channel 1131. A peripheral wall surrounding the second lumen 1142 includes the first body member 311, the second body member 312, the first coupling member 32 coupling the first end of the first body member 311 and the first end of the second body member 312, and the inner wall of the first collecting tube 11. The second lumen 1142 is in communication with the second channel 1141.
As illustrated in
In some embodiments, as illustrated in
As illustrated in
The first assembly 3 further includes a fourth coupling member 35, and the fourth coupling member 35 extends in the length direction of the first collecting tube 11. A gap is defined between one end of the fourth coupling member 35 (a left end of the fourth coupling member 35 as illustrated in
As illustrated in
In some embodiments, a size of the first coupling member 32 in the length direction of the first collecting tube 11 is greater than or equal to a size of the second coupling member 33 in the length direction of the first collecting tube 11. In some embodiments, a plurality of first coupling members 32 arranged along the length direction of the first collecting tube 11 may have a same size or different sizes in the length direction of the first collecting tube 11. Therefore, the number of the first heat exchange tubes 21 in communication with the first lumen 1132 and the number of the second heat exchange tubes 22 in communication with the second lumen 1142 may be the same or different. In other embodiments, in the length direction of the first collecting tube 11, different first lumens 1132 are coupled to different numbers of the first heat exchange tubes 21. In this design, the first heat exchange tube 21 and the second heat exchange tube 22 which have different heat exchange capacities may be provided, to realize the differentiated partial load design. For example, the cooling capacity of the circuit using the first heat exchange tube 21 is greater than the cooling capacity of the circuit using the second heat exchange tube 22. Therefore, the overall efficiency of the heat exchanger can be improved.
As illustrated in
In some embodiments, as illustrated in
As illustrated in
The body member 31 further has the upper end and the lower end. The upper end of the body member 31 is coupled to the top wall of the first peripheral wall 111, and the lower end of the body member 31 is coupled to the bottom wall of the first peripheral wall 111.
In some embodiments, two body members 31 of the plurality of body members 31 are adjacent to each other in the length direction of the first collecting tube 11, the second ends of the two body members 31 are coupled to each other, the first ends of the two body members 31 are spaced apart, and the gap is defined between the coupling portion of the second ends of the two body members 31 and the inner wall surface of the first collecting tube 11. In the length direction of the first collecting tube 11, the coupling portion of the first ends of two adjacent body members 31 and the coupling portion of the second ends of two adjacent body members 31 are alternately arranged.
As illustrated in
As illustrated in
As illustrated in
In some embodiments, as illustrated in
A plurality of first coupling members 32 are provided. One end of one first coupling member 32 (the left end of the first coupling member 32 as illustrated in
As illustrated in
In some embodiments, one end of one first coupling member 32 (the left end of the first coupling member 32 as illustrated in
As illustrated in
The left end of the second coupling member 33 is coupled to the rear end of the second body member 312, and the right end of the second coupling member 33 is coupled to the rear end of the third body member 313. The second coupling member 33 includes the second through hole 332, and the second through hole 332 penetrates through the second coupling member 33 along the front-rear direction and communicates the second lumen 1142 and the second channel 1141. The peripheral wall surrounding the second lumen 1142 includes one first coupling member 32, one second coupling member 33, one second body member 312 and one third body member 313. The first channel 1131 is in communication with the first lumen 1132 via the through hole in the first coupling member 32, and the second channel 1141 is in communication with the second lumen 1142 via the through hole in the second coupling member 33. The number of the first lumen 1132 and the number the second lumen 1142 may be designed and adjusted according to the application situation, thus improving the heat exchange efficiency of the heat exchanger. In some embodiments, one or a plurality of first through holes 321 may be provided in one first coupling member 32. The heat exchanger is used as a common evaporator in a circuit having a plurality of system. The refrigerant under condition of two phase flow enters the first collecting tube 11. By designing the size and quantity of the through holes in the first coupling member 32 and the second coupling member 33, the pressure and rate of flow of the passing refrigerant are adjusted to achieve the uniform distribution of the refrigerant and to reduce the gas-liquid separation. In other embodiments, in the length direction of the first collecting tube 11, the through holes in the first coupling member 32 far from the refrigerant inlet of the first channel 1131 may have a larger flow sectional area or be provided in a larger number, and the through holes in the first coupling member 32 close to the refrigerant inlet of the first channel 1131 may have a smaller flow area or be provided in a smaller number, such that the refrigerant distribution in the length direction of the first collecting tube 11 can be adjusted.
In some embodiments, as illustrated in
The first coupling member 32 includes the plurality of first through holes 322, the first through hole 322 penetrates through the first coupling member 32 in the width direction of the first heat exchange tube 21, the second coupling member 33 includes the plurality of second through holes 332, and the second through hole 332 penetrates through the second coupling member 33 in the width direction of the first heat exchange tube 21. The peripheral wall forming the first lumen 1132 includes part of the first coupling member 32, part of the second coupling member 33, the first body member 311, the second body member 312 and part of the first peripheral wall 111, and the first through hole 322 communicates the first lumen 1132 with the first channel 1131. The peripheral wall forming the second lumen 1142 includes part of the first coupling member 32, part of the second coupling member 33, the third body member 313, the fourth body member 314 and part of the first peripheral wall 111, and the second through hole 332 communicates the second lumen 1142 with the second channel 1141. The first lumen 1132 is not in communication with the second channel 1141, and the second lumen 1142 is not in communication with the first channel 1131.
As illustrated in
Two body members 31 of the plurality of body members 31 adjacent to each other in the left-right direction are defined as the first body member 311 and the second body member 312, and another two body members 31 adjacent to each other in the left-right direction are defined as the third body member 313 and the fourth body member 314.
The first coupling member 32 includes the plurality of first through holes 322, and the first through hole 322 penetrates through the first coupling member 32 in the front-rear direction and communicates the first lumen 1132 with the first channel 1131. The second coupling member 33 includes the plurality of second through holes 332, the second through hole 332 penetrates through the second coupling member 33 in the front-rear direction and communicates the second lumen 1142 with the second channel 1141. The first lumen 1132 is not in communication with the second channel 1141, and the second lumen 1142 is not in communication with the first channel 1131.
The peripheral wall forming the first lumen 1132 includes part of the first coupling member 32, part of the second coupling member 33, the first body member 311, the second body member 312 and part of the first peripheral wall 111. The peripheral wall forming the second lumen 1142 includes part of the first coupling member 32, part of the second coupling member 33, the third body member 313, the fourth body member 314 and part of the first peripheral wall 111. The first coupling member 32 and the second coupling member 33 are arranged along the length direction of the first collecting tube 11, which is conducive to improving the strength of the first collecting tube 11. Moreover, as a part of a wall surface forming the first channel 1131, the surface on a side of the first coupling member 32 may be designed. For example, the surface of the first coupling member 32 has a protrusion to adjust the pressure and rate of flow of refrigerant in the first channel 1131 and to improve the distribution efficiency of the refrigerant.
In some embodiments, the first collecting tube 11 is a circular tube, each of an end surface of the third end and an end surface of the fourth end of the body member 31 is an arc-shaped surface projecting towards the inner wall surface of the first collecting tube 11, and each of the end surface of the third end and the end surface of the fourth end of the body member 31 is coupled to the inner wall surface of the first collecting tube 11.
As illustrated in
In some embodiments, the first collecting tube 11 is a circular tube, a rectangular tube or a square tube. The first assembly 31 further includes a first plate 37, and the first plate 37 has a first side surface (a front side surface of the first plate 37 as illustrated in
And/or, the first assembly 3 further includes a second plate 38, and the second plate 38 has a first side surface (a front side surface of the second plate 38 as illustrated in
As illustrated in
The front side surface of the first plate 37 is coupled to the upper side surface of the first coupling member 32, the rear side surface of the first plate 37 is coupled to the upper side surface of the second coupling member 33, the front side surface of the second plate 38 is coupled to the lower side surface of the first coupling member 32, and the rear side surface of the second plate 38 is coupled to the lower side surface of the second coupling member 33. The upper side surface of the first plate 37 is coupled to the inner wall surface of the first peripheral wall 111, and the lower side surface of the second plate 38 is coupled to the inner wall surface of the first peripheral wall 111. The plurality of body members 31 are spaced apart in an area surrounded by the first plate 37, the second plate 38, the first coupling member 32 and the second coupling member 33 along the left-right direction. The upper ends of the plurality of body members 31 are coupled to the lower side surface of the first plate 37, and the lower ends of the plurality of body members 31 are coupled to the upper side surface of the second plate 38.
It can be understood that the present disclosure is not limited to this. In some optional embodiments, in the heat exchanger 100 according to embodiments of the present disclosure the first assembly 3 may only include the first plate 37, or the first assembly 3 may only include the second plate 38. The first plate 37 and the second plate 38 are conducive to improving the strength of the first collecting tube 11, or can reduce the wall thickness of the first collecting tube 11 under the condition of ensuring a certain strength requirement, thus reducing the processing difficulty. Moreover, the first plate 37 and the second plate 38 can reduce the internal volume in the first collecting tube 11 for containing the refrigerant, thus improving the performance of the heat exchanger while reducing the refrigerant charge.
In some embodiments, the second collecting tube 12 includes a second peripheral wall 121 and a second main channel 122 surrounded by the second peripheral wall 121. The heat exchanger 100 further includes a second assembly 4, a third inlet-outlet tube 15 and a fourth inlet-outlet tube 16.
The second assembly 4 is located in the second main channel 122. The second main channel 122 includes a third flow channel 123 and the fourth flow channel 124. At least part of the second assembly 4 abuts with an inner wall surface of the second collecting tube 12.
The third flow channel 123 includes a third channel 1231 and a plurality of third lumens 1232. The third channel 1231 extends in a length direction of the second collecting tube 12 (the left-right direction as illustrated in
The third lumen 1232 and the fourth lumen 1242 are alternately arranged along the length direction of the second collecting tube 12. The second assembly 4 separates the third lumen 1232 from the fourth lumen 1242, and the third lumen 1232 and the fourth lumen 1242 are not in communication with each other. The third lumen 1232 is in communication with the first heat exchange tube 21, and the fourth lumen 1242 is in communication with the second heat exchange tube 22. The first channel 1131, the first lumen 1132, the first heat exchange tube 21 and the third lumen 1232 are in communication with each other, and the second channel 1141, the second lumen 1142, the second heat exchange tube 22 and the fourth lumen 1242 are in communication with each other.
The third inlet-outlet tube 15 is in communication with the third channel 1231, and the fourth inlet-outlet tube 16 is in communication with the fourth channel 1241.
As illustrated in
The first collecting tube 11 and the second collecting tube 12 are arranged in parallel along the up-down direction and extend in the left-right direction. The second collecting tube 12 includes the second peripheral wall 121 and the second main channel 122 surrounded by the second peripheral wall 121. The second peripheral wall 121 includes a left wall and a right wall. The second assembly 4 is located in the second main channel 122. The second assembly 4 includes an upper end surface, a lower end surface, a front side surface and a rear side surface. The upper end surface of the second assembly 4 is coupled to the inner wall surface of the second peripheral wall 121, and the lower end surface of the second assembly 4 is coupled to the inner wall surface of the second peripheral wall 121. A gap is defined between the front side surface of the second assembly 4 and the inner wall surface of the second peripheral wall 121, and a gap is defined between the rear side surface of the second assembly 4 and the inner wall surface of the second peripheral wall 121. A left end of the second assembly 4 is coupled to the left wall of the second peripheral wall, and a right end of the second assembly 4 is coupled to the right wall of the second peripheral wall 121. Thus, the second assembly 4 separates the second main channel 122 into the third flow channel 123 and the fourth flow channel 124.
Further, the second assembly 4 extends in the left-right direction in the second main channel 121, and a longitudinal section of the second assembly 4 is approximately in an S-shape which is bent continuously. Therefore, the second assembly 4 separates the third flow channel 123 into one third channel 1231 and the plurality of third lumens 1232, and the third channel 1231 is in communication with the plurality of third lumens 1232. Similarly, the second assembly 4 separates the fourth flow channel 124 into one fourth channel 1241 and the plurality of fourth lumens 1242, and the fourth channel 1241 is in communication with the plurality of fourth lumens 1242.
The third lumen 1232 and the fourth lumen 1242 are alternately arranged along the left-right direction, and the third lumen 1232 and the fourth lumen 1242 are not in communication with each other. The third lumen 1232 is in communication with the first heat exchange tube 21, and the fourth lumen 1242 is in communication with the second heat exchange tube 22. Thus, an upper end of the first heat exchange tube 21 is in communication with the first lumen 1132, a lower end of the first heat exchange tube 21 is in communication with the third lumen 1232, an upper end of the second heat exchange tube 22 is in communication with the second lumen 1142, and a lower end of the second heat exchange tube 22 is in communication with the fourth lumen 1242.
The right wall of the second peripheral wall 121 includes a third coupling port 117 and a fourth coupling port 118 spaced apart from each other in the front-rear direction, and each of the third coupling port 117 and the fourth coupling port 118 penetrates through the right wall of the second peripheral wall 121 in the left-right direction. The right end of the second assembly 4 is located between the third coupling port 117 and the fourth coupling port 118 to separate the third coupling port 117 from the fourth coupling port 118. The third inlet-outlet tube 15 passes through the third coupling port 117, and the third inlet-outlet tube 15 is in communication with the third channel 1231. The fourth inlet-outlet tube 16 passes through the fourth coupling port 118, and the fourth inlet-outlet tube 16 is in communication with the fourth channel 1241. Therefore, two refrigerant channels separated from each other are formed.
It can be understood that the present disclosure is not limited to this. In some optional embodiments, the first assembly 3 and the second assembly 4 according to embodiments of the present disclosure have the same structure, and the first assembly 3 and the second assembly 4 are arranged in the first collecting tube 11 and the second collecting tube 12, respectively.
As illustrated in
The air conditioning unit according to embodiments of the present disclosure includes the plurality of refrigeration systems. At least two refrigeration systems of the plurality of refrigeration systems share at least one heat exchanger in any one of the above embodiments. In the heat exchanger, the first collecting tube and the second collecting tube are provided and arranged in parallel, and the plurality of first heat exchange tubes and the plurality of second heat exchange tubes are arranged between the first collecting tube and the second collecting tube, and alternately arranged along the length direction of the first collecting tube. The first assembly is arranged in the first collecting tube to separate the first main channel in the first collecting tube into the first flow channel and the second flow channel, and the first flow channel and the second flow channel are not in communication with each other. The first flow channel includes the first channel and the plurality of first lumens, and the plurality of first lumens are coupled to the plurality of first heat exchange tubes, respectively. The second flow channel includes the second channel and the plurality of second lumens, and the plurality of second lumens are coupled to the plurality of second heat exchange tubes, respectively. Therefore, when the heat exchanger is applied in the air conditioning unit having multiple refrigeration systems, the refrigerant may only circulate in the first flow channel and the first heat exchange tube, or the refrigerant may only circulate in the second flow channel and the second heat exchange tube, or the refrigerant may not only circulate in the first flow channel and the first heat exchange tube, but also circulate in the second flow channel and the second heat exchange tube. The heat exchanger can improve the utilization rate of the heat exchange area, which is conducive to improving the performance of the system.
In the description of the present disclosure, terms such as “an embodiment,” “some embodiments,” “an example,” “a specific example,” or “some examples,” means that a particular feature, structure, material, or characteristic described in coupling with the embodiment or example is included in at least one embodiment or example of the present disclosure. Thus, the appearances of these terms in various places throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and unite different embodiments or examples or features of the different embodiments or examples described in this specification.
Although embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are illustrative and shall not be understood as limitation to the present disclosure, and changes, modifications, alternatives and variations can be made in the above embodiments within the scope of the present disclosure by those skilled in the art.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011009805.4 | Sep 2020 | CN | national |
This application is a national phase entry under 35 USC § 371 of International Application PCT/CN2021/119935, filed Sep. 23, 2021, which claims priority to and benefit of the Chinese Patent Application No. 202011009805.4 filed on Sep. 23, 2020, the entire content of which is incorporated herein by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/119935 | 9/23/2021 | WO |
