HEAT EXCHANGER AND AIR CONDITIONING DEVICE

Abstract

A heat exchanger is provided. The heat exchanger includes a connection tube, a plurality of heat exchange tubes and a plurality of connection joints, and the heat exchanger tubes and the connection joints correspond to each other one by one. Each of the plurality of the heat exchange tubes is in communication with the connection tube via a corresponding connection joint, each of the plurality of connection joints is provided with a connection port, and each of the plurality of connection joints is in communication with the connection tube via the connection port. The connection tube is provided with a distribution tube along an arrangement direction of the heat exchange tubes, the distribution tube is provided with a distribution holes matching the connection port, and the distribution hole is arranged right opposite to the connection port. An air conditioning device having the heat exchanger is further provided.

Description

TECHNICAL FIELD

The present disclosure relates to the field of heat exchange, and in particular, to a heat exchanger and an air conditioning device.

BACKGROUND

At present, in a heat exchanger in the related art, a connection tube is commonly directly connected to a heat exchange tube. A tube wall of the connection tube is provided with a plurality of distribution holes matching the heat exchange tube. The heat exchange tube is inserted into a distribution hole corresponding to the heat exchange tube and welded together with the connection tube. However, since the heat exchange tube is in a flat-shaped structure and the connection tube is commonly in a circular-shaped structure, it is hard to align the distribution holes on the connection tubes with the heat exchange tube and distribute a refrigerant from the circular-shaped collection tube to the flat-shaped heat exchange tube when the collection tube is connected to the heat exchange tube by the method above. Thus, the refrigerant mixed by a gas and a liquid cannot be evenly distributed, so that a heat exchange effect when the heat exchange tube is in operation is affected.

SUMMARY

According to various embodiments of the present disclosure, it is required to provide with a heat exchanger and an air conditioning device to solve above problems.

The heat exchanger includes a connection tube, a plurality of heat exchange tubes and a plurality of connection joints. The plurality of heat exchanger tubes and the plurality of connection joints corresponds to each other one by one. Each of the plurality of the heat exchange tube is in communication with the connection tube via a corresponding connection joint. Each of the plurality of connection joints is provided with a connection port. A cross section of the connection port is circular-shaped. Each of the plurality of connection joints is connected to and in communication with the connection tube via the connection port. The connection tube is provided with a distribution tube along an arrangement direction of the plurality of heat exchange tubes. The distribution tube is provided with a plurality of distribution holes matching the connection port. Each of the plurality of distribution holes is arranged right opposite to a corresponding connection port, such that a refrigerant in the distribution tube is capable of being guided to flow through the plurality of distribution holes and flow to a connection port corresponding to the distribution tube.

In the present disclosure, the plurality of connection joints and the distribution tube are provided. When the heat exchanger is in operation, the refrigerant in the connection tube can be sprayed towards the connection port of each of the plurality of connection joints via the plurality of distribution holes of the distribution tube, and then the refrigerant is guided to the plurality of heat exchange tubes via the plurality of connection joints. A cross section of the connection port is circular-shaped. Thus, the refrigerant can be introduced into each of the plurality of heat exchange tubes. That is, the plurality of connection joints and the distribution tube play a role in optimizing a liquid separation process, improving heat exchange effect of the heat exchanger when the heat exchanger is in operation. The plurality of heat exchange tubes are connected to the connection tube via the plurality of connection joints, facilitating assembly and connection of the plurality of heat exchange tubes with the connection tube.

In an embodiment, a distance adjacent between two of the plurality of connection joints is equal to a distance between corresponding two of the plurality of heat-exchange tubes, respectively.

In this way, the plurality of connection joints are spaced from each other in a distance equal to a distance between the plurality of connection joints, so as to satisfy a use requirement of the heat exchange tube being in communication with the connection tube via the corresponding connection joint.

In an embodiment, each of the plurality of connection joints is provided with a turbulator, and the refrigerant flew in via the connection port is capable of flowing out to a corresponding heat-exchange tube through the turbulator.

By providing the turbulator, the refrigerant introduced into each of the plurality of connection joints is distributed, such that a liquid separation process can be further optimized, resulting in improving the heat exchange effect of the heat exchanger when the heat exchanger is in operation.

In an embodiment, the turbulator is a throttling ring. The throttling ring is fixed in each of the plurality of connection joints. The throttling ring is provided with a flow passage hole configured for allowing the refrigerant to flow.

When the turbulator is the throttling ring, the refrigerant in the plurality of the connection joints can flow through the flow passage hole of the throttling ring and flow to the plurality of heat exchange tubes. By an arrangement of the throttling ring, a flow rate of refrigerant flowing out to the plurality of heat exchange tubes can be effectively improved, a heat exchange coefficient can be further increased, resulting in improving the heat exchange efficiency of the heat exchanger.

In an embodiment, each of the plurality of connection joints is provided with a step-shaped surface. An outer periphery wall of the throttling ring abuts against the step-shaped surface. The throttling ring is fixed to the connection joint.

By providing the step-shaped surface on each of the plurality of connection joints, the throttling ring can be assembled on each of the plurality of connection joints, facilitating mounting the throttling ring on each of the plurality of connection joints.

In an embodiment, each of the plurality of connection joints includes a circular-shaped joint portion. Each of the plurality of connection joints is disposed on the connection tube via the circular-shaped joint portion. The connection port is disposed on the circular-shaped joint portion.

By providing the circular-shaped joint portion, the plurality of connection joints can be assembled on the connection tube, facilitating assembling of the plurality of connection joints on the connection tube.

In an embodiment, each of the plurality of connection joints further includes a heat exchange-tube inserting portion and a transition connecting portion. The heat exchange-tube inserting portion is connected to and in communication with the circular-shaped joint portion via the transition connecting portion. The heat exchange tube is disposed on each of the plurality of connection joints via the heat exchange-tube inserting portion.

By providing the heat exchange-tube inserting portion, the plurality of connection joints are assembled with and connected to the plurality of heat exchange tubes, so that the plurality of heat exchange tubes is assembling on the plurality of connection joints. In addition, the circular-shaped joint portion is connected to the heat exchange-tube inserting portion via the transition connecting portion, facilitating the refrigerant flowing in the plurality of connection joints.

In an embodiment, the connection tube is provided with at least one dividing plate. The at least one dividing plate is disposed in the connection tube along an arrangement direction of the plurality of heat exchange tube to divide the connection tube into a plurality of independent cavities. The connection tube is provided with a distribution tube in each of the plurality of independent cavities.

By providing the at least one dividing plate, the connection tube is divided into the plurality of independent cavities, such that the refrigerant introduced into the connection tube can be distributed into the plurality of independent cavities, thereby preventing the refrigerant introduced into the connection tube from depositing at a bottom of the connection tube under an influence of gravity. That is, the at least one dividing plate can play a role in reducing pressure difference, and have a function of evenly distributing the refrigerant.

In an embodiment, the heat exchanger includes a distributor. The distributor is provided with a plurality of capillaries matching with the distribution tube. The distributor is capable of being in communication with a distribution tube corresponding to the distributor via the plurality of capillaries.

By providing the distributor, when the heat exchanger is in operation, the refrigerant introduced into the connection tube can be distributed, so as to satisfy a use requirement of distributing the refrigerant into the plurality of distribution tubes.

The present disclosure further requests for protecting an air conditioning device. The air conditioning device includes a device main body and a heat exchanger. The heat exchanger is disposed on the device main body. The heat exchanger is any one of above heat exchangers.

In the present disclosure, by providing the heat exchanger having a reasonable structure, a heat exchange effect of the air conditioning device in operation can be improved, so that the performance of the air conditioning device is improved.

Compared to the technology in related art, the technical solution in the present disclosure has following advantages.

In a heat exchanger and an air conditioning device of the present disclosure, the plurality of connection joints and the distribution tube are provided. When the heat exchanger is in operation, the refrigerant in the connection tube can be sprayed towards the connection port of each of the plurality of connection joints via the plurality of distribution holes of the distribution tube, and then the refrigerant is guided to the plurality of heat exchange tubes via the plurality of connection joints. Thus, the refrigerant can be introduced into each of the plurality of heat exchange tubes. That is, the plurality of connection joints and the distribution tube play a role in optimizing a liquid separation process, improving heat exchange effect of the heat exchanger when the heat exchanger is in operation. The plurality of heat exchange tubes are connected to the connection tube via the plurality of connection joints, facilitating assembly and connection of the plurality of heat exchange tubes with the connection tube.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better description and illustration of embodiments and/or examples of those disclosures disclosed herein, reference may be made to one or more attached drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed disclosures, currently described embodiments and/or examples, and currently understood best modes of these disclosures.

FIG. 1 is a schematic diagram of a heat exchanger of the present disclosure.

FIG. 2 is a partial cross-sectional view of a heat exchanger of the present disclosure.

FIG. 3 is a cross-sectional view of a connection joint of the present disclosure.

FIG. 4 is a schematic diagram of an air conditioning device of the present disclosure.

Reference signs are as follows: 10 represents a connection tube; 101 represents an independent cavity; 11 represents a circular-shaped mounting hole; 12 represents a dividing plate; 20 represents a heat exchange tube; 30 represents a connection joint; 301 represents a step-shaped surface; 31 represents a circular-shaped joint portion; 311 represents a connection port; 32 represents a heat exchange-tube inserting portion; 321 represents a contour hole; 33 represents a transition connecting portion; 34 represents a turbulator; 341 represents a throttling ring; 3411 represents a flow passage hole; 3412 represents an outer periphery wall; 40 represents a distribution tube; 41 represents a distribution hole; 42 represents an inlet; 50 represents a distributor; 51 represents a capillary; 60 represents a heat dissipation fin; 100 represents an air conditioning device; 110 represents an device main body; and 120 represents a heat exchanger.

DETAILED DESCRIPTION

The following will provide a clear and complete description of the technical solution in the embodiments of the present disclosure, in communication with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary skill in this art without creative labor fall within the scope of protection of the present disclosure.

It should be noted that, when a member is considered “connected to” another member, it can be directly connected to another member or there may be a centered member present simultaneously. When a member is considered “set on” another member, it can be directly set on another member or there may be a centered member present simultaneously. When a member is considered “fixed to” another member, it can be directly fixed to another member or there may be a centered member present simultaneously.

Unless otherwise defined, all technical and scientific terms used in this article have the same meanings as those commonly understood by those skilled in the art of the present disclosure. The terms used in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term “and/or” used in this article includes any and all combinations of one or more related listed items.

The present disclosure requests for protecting an air conditioning device. The air conditioning device includes a device main body and a heat exchanger. The heat exchanger is disposed on the device main body. Other structural components and working principles of the air conditioning device can adopt conventional technologies from related air conditioning device, which is not described in detail herein.

Referring to FIG. 1, the present disclosure provides a heat exchanger. The heat exchanger includes a connection tube 10, a plurality of heat exchange tubes 20 and a plurality of connection joints 30.

The plurality of heat exchange tubes 20 and the plurality of connection joints 30 corresponds to each other one by one. Each of the plurality of the heat exchange tubes 20 is connected to and in communication with the connection tube 10 via a corresponding connection joint 30. The heat exchanger tube 20 can be a single row or a plurality of rows, which can be specifically arranged by heat exchange capacity required for an application sit having the heat exchanger. When the plurality of heat exchange tubes 20 are the plurality of rows, two rows of the plurality of heat exchange tube 20 adjacent to each other are connected to each other via a connecting bend pipe.

Referring to FIG. 2, each of the plurality of connection joints 30 is provided with a connection port 311. A cross section of the connection port 31 is circular-shaped. Each of the plurality of connection joints 30 is in communication with the connection tube 10 via the connection port 311. The connection tube 10 is provided with a distribution tube 40 along an arrangement direction of the plurality of heat exchange tubes 40. The distribution tube 40 is provided with a plurality of distribution holes 41 fitting with the connection port 311. Each of the plurality of distribution holes 41 is arranged right opposite to a corresponding connection port 311, such that a refrigerant in the distribution tube 40 is capable of being guided to flow through each of the plurality of distribution holes 41 to a corresponding connection port 311. The connection tube 10 is in communication with the plurality of heat exchange tubes 20 via the distribution tube 40 and the plurality of connection joints 30, such that the refrigerant can be introduced into the connection port 311 of the plurality of connection joints 30, which is distributed by the plurality of distribution holes 41 of the distribution tube 40, and flow to a corresponding heat exchange tube 20 via the plurality of connection joints 30. The above refrigerant refers to a refrigerant mixture of gas-liquid two-phase mixture.

In the present disclosure, an axis of the distribution tube 40 is parallel to an axis of the connection tube 10. A distance between a centerline of the distribution tube 40 and a centerline of the connection tube 10 can be set as required. In some embodiments, the connection port 311 of the plurality of connection joints 30 abuts against a position where the plurality of distribution holes 41 of the distribution tube 40 are located, facilitating determining a position where the plurality of connection joints 30 is assembled on the connection tube 10, and facilitating refrigerant extracted from the plurality of distribution holes 41 introduced into the connection port 311 of the plurality of connection joint 30, which is not described in detail herein.

The refrigerant in the distribution tube 40 is sprayed towards the connection port 311 of each of the plurality of connection joint 30 via the plurality of distribution hole 41, and introduced into the plurality of heat exchange tubes 20 via the plurality of connection joints 30, such that the refrigerant can be evenly introduced into each of the plurality of heat exchange tubes 20. That is, the plurality of connection joints 30 and the distribution tube 40 play a role in optimizing the liquid separation process, resulting in improving heat exchange effect of the heat exchanger when the heat exchanger is in operation. The plurality of heat exchange tubes 20 are connected to the connection tube 10 via the plurality of connection joints 30, facilitating assembling and connecting the plurality of heat exchange tubes 20 with the connection tube 10.

In some embodiments, the distribution tube 40 is provided with the plurality of distribution holes 41 matching with the connection port 311 and an inlet 42, and the inlet 42 is not aligned with the plurality of distribution holes 41. Since the inlet 42 is not aligned with the plurality of distribution holes 41, the refrigerant will be sprayed to the inner wall of the distribution tube 40 when the refrigerant flows into the distribution tube 40 via the inlet 42, rather than being distributed into the plurality of distribution holes 41, thereby facilitating distribution of the refrigerant.

In some embodiments, the distribution tube 40 is provided with an inlet 42, the distribution tube 40 is disposed inside the connection tube 10, the distribution tube 40 includes a first sidewall 43 and second sidewall 44 opposite to each other, the inlet 42 is disposed on the first sidewall 43 of the distribution tube 40, and a distance between the first sidewall 43 of the distribution tube 40 and the inner surface of the connection tube 10 is smaller than a distance between the second sidewall 44 of the distribution tube 40 and the inner surface of the connection tube 10. Since the distance between the first sidewall 43 of the distribution tube 40 and the inner surface of the connection tube 10 is smaller than the distance between the second sidewall 44 of the distribution tube 40 and the inner surface of the connection tube 10, the distribution tube 40 can be disposed on the inner surface of the connection tube 10 more stably.

In some embodiments, the first sidewall 43 of the distribution tube 40 is tangential to the inner surface of the connection tube 10. That is, the distance between the first sidewall 43 of the distribution tube 40 and the inner surface of the connection tube 10 is 0. In some embodiments, the first sidewall 43 of the distribution tube 40 abuts against the inner surface of the connection tube 10. When the first sidewall 43 of the distribution tube 40 is tangential to the inner surface of the connection tube 10, the distribution tube 40 can be fixed on the inner surface of the connection tube 10 more stable.

Referring to FIG. 3, in the present disclosure, the connection joint 30 includes a circular-shaped joint portion 31. The connection joint 30 can be disposed on the connection tube 10 via the circular-shaped joint portion 31. The circular-shaped joint portion 311 is disposed on the circular-shaped joint portion 31, such that the plurality of connection joints 30 are assembled with and connected to the connection tube 10, facilitating mounting the connection joint 30 on the connection tube 10.

In the present disclosure, the connection tube 10 is provided with a circular-shaped mounting hole 11 to fit with the circular-shaped joint portion 31. The circular-shaped joint portion 31 of each of the plurality of connection joints 30 is inserted into the circular-shaped mounting hole 11, and the circular-shaped joint portion 31 is connected to and fixed on the connection tube 10 in a welding manner. In the present disclosure, a circular-shaped mounting hole 11 can be formed on the connection tube 10, which can be processed in a shape by stamping, such that a position where the circular-shaped mounting hole 11 of the connection tube 10 is located is provided with an inner flange (not shown), so as to increase a contact area between the circular-shaped joint portion 31 and the connection tube 10 when the circular-shaped joint portion 31 of each of the plurality of connection joints 30 is disposed on the circular-shaped mounting hole 11, resulting in improving stability of the plurality of connection joints 30 disposing on the connection tube 10.

In some embodiments, the connection tube 10 is provided with a circular-shaped mounting hole 11, the circular-shaped joint portion 31 is inserted into the circular-shaped mounting hole 11, and a depth of the circular-shaped joint portion 31 inserting into the circular-shaped mounting hole 11 is in a range of 2 mm to 10 mm. Since the depth of the circular-shaped joint portion 31 inserting into the circular-shaped mounting hole 11 is in a range of 2 mm to 10 mm, a connection strength between the circular-shaped joint portion 31 and the circular-shaped mounting hole 11 can be improved, and the refrigerant can be distributed more uniformly.

In the present disclosure, each of plurality of the connection joints 30 further includes a heat exchange-tube inserting portion 32 and a transition connecting portion 33. The heat exchange-tube inserting portion 32 is connected to and in communication with the circular-shaped joint portion 31 via the transition connecting portion 33. The plurality of heat exchange tubes are disposed on the plurality of connection joints 30 via the heat exchange-tube inserting portion 32, such that the plurality of connection joints 30 is assembled with and connected to the plurality of heat exchange tubes 20, so that the plurality of heat exchange tubes 20 are assembled on the plurality of connection joints 30. In addition, the circular-shaped joint portion 31 is connected to and in communication with the heat exchange-tube inserting portion 32 via the transition connecting portion 33, facilitating the refrigerant flowing in the connection joint 30. In addition, a sectional area of the circular-shaped joint portion 31 is greater than that of the heat exchange-tube inserting portion 32, such that a flow rate of the refrigerant flowing from the circular-shaped joint portion 31 to the heat exchange-tube inserting portion 32 increases, thereby significantly improving a heat exchange coefficient, resulting in increasing heat exchange efficiency of the heat exchanger. In the present disclosure, the heat exchange-tube inserting portion 32 of each of the plurality of connection joints 30 is provided with a contour hole 321 matching the heat exchange tube 20. The plurality of heat exchange tubes 20 can be circular, elliptical, or flat tube shapes and so on. The plurality of heat exchange tubes 20 can be inserted into the contour hole 321 of the heat exchange-tube inserting portion 32, and the plurality of heat exchange tubes 20 are connected to and fixed on the contour hole 321 of the heat exchange-tube inserting portion 32 in a welding manner.

In the present disclosure, a distance between adjacent two of the plurality of connection joints 30 is equal to a distance between two of the plurality of heat exchange tubes 20, respectively, such that an arrangement between the plurality of connection joints 30 and the plurality of heat exchange tubes 20 can be realized, and the plurality of connection joints 30 can be spaced from each other in a distance equal to a distance between the plurality of connection joints 20, so as to satisfy a use requirement of the plurality of heat exchange tubes 20 being connected to and in communication with the connection tube 10 via the two of the plurality of connection joints 30 corresponding to the two of the plurality of the heat exchange tubes 20, respectively. In the present disclosure, the distance between the adjacent two of the plurality of connection joints 30 refers to a distance between axes of the adjacent two of the plurality of connection joints 30. The distance between the adjacent two of the plurality of heat exchange tubes 20 refers to a distance between axes of the adjacent two of the plurality of heat exchange tubes 20.

Referring to FIG. 3, in the present disclosure, the connection joint 30 is provided with a turbulator 34. The refrigerant introduced from the connection port 311 can flow through the turbulator 34 and flow to the plurality of heat exchange tubes 20. When the heat exchanger is in operation, the turbulator 34 can play a distributing role for the refrigerant introduced into each of the plurality of connection joints 30, such that the liquid separation process can be further optimized, resulting in improving the heat exchange effect when the heat exchanger is in operation.

The turbulator 34 can be a throttling ring 341. The throttling ring 341 is fixed in each of the plurality of connection joints 30. The throttling ring 341 is provided with a flow passage hole 3411 to be configured for allowing the refrigerant to flow. The turbulator 34 can be provided, such that the refrigerant in the plurality of connection joints 30 can flow through the flow passage hole 3411 of the throttling ring 341 and flow to the plurality of heat exchange tubes 20. A flow rate of refrigerant towards the plurality of heat exchange tubes can be effectively improved, and the heat exchange coefficient can be further increased, resulting in improving heat exchange efficiency of the heat exchanger.

The number of the flow passage hole 3411 is one. The flow passage hole 3411 can be disposed on a middle part of the throttling ring 341, facilitating processing and forming the throttling ring 3411 on the throttling ring 341. In some embodiments, the number and the position of the flow passage hole 3411 are not limited by above description, for skill in the art, the number of the flow passage hole 3411 can be multiple, and a plurality of throttling rings 3411 can be disposed on any position of the throttling ring 341, which is not described in detail herein.

In some embodiments, a plurality of flow passage holes 3411 are provided on the throttling ring 341, and the plurality of flow passage holes 3411 are spaced from each other; and sectional areas of the plurality of flow passage holes 3411 are different. When the heat exchanger is in operation, the plurality of flow passage holes 3411 having different sectional areas can make flow rates of the refrigerant flowing through the plurality of flow passage holes 3411 different, and generate perturbance in the connection joint 30, thereby facilitating distribution of the refrigerant.

In the present disclosure, each of the plurality of connection joint 30 is provided with a step-shaped surface 301. An outer periphery wall 3412 of the throttling ring 341 abuts against the step-shaped surface 301, and he throttling ring 341 is fixedly connected to each of the plurality of connection joints 30, so as to assemble the throttling ring 341 on the connection joint 30, facilitating assembling the throttling ring 341 on the connection joint 30. The throttling ring 341 can be connected to each of the plurality of connection joints 30 in an welding manner. The throttling ring 341, the plurality of connection joints 30, the connection tube 10, and the plurality of heat exchange tubes 20 can be welded together in a brazing furnace.

In the present disclosure, the connection tube 10 is provided with at least one dividing plate 12. The at least one dividing plate 12 is disposed on the connection tube along an arrangement direction of the plurality of heat exchange tubes 20 to divide the connection tube 10 into a plurality of independent cavities 101. The connection tube 10 is provided with the distribution tube 40 in each of the plurality of independent cavities 101. When the heat exchanger is in operation, the refrigerant introduced into the connection tube 10 can be distributed into the plurality of independent cavities 101, thereby preventing the refrigerant introduced into the connection tube 10 from depositing at a bottom of the connection tube 10 under an influence of gravity. That is, the at least one dividing plate can play a role in reducing pressure difference, and have a function of evenly distributing the refrigerant. The distribution tube 40 is disposed in an independent cavity 101 corresponding to the distribution tube 40. The distribution tube 40 can abut against and seal with the dividing plate 12, such that a refrigerant distributing cavity can be form by each of a plurality of distribution tubes 40 in the independent cavities 101, so as to satisfy a use requirement of the distribution tube 40 distributing the refrigerant into the plurality of connection joints 30.

Referring to FIG. 1, in the present disclosure, the heat exchanger further includes a distributor 50. The distributor 50 is provided with a plurality of capillaries 51 matching with the distributor 40. The distributor 50 can be in communication with a distributor 40 corresponding to the distributor 50 via the plurality of capillaries 51, such that when the heat exchanger is in operation, the refrigerant introduced into the connection tube 10 can be distributed, so as to satisfy a use requirement of evenly distributing the refrigerant into the plurality of distribution tubes 40. The distributor 50 can specifically be a common distribution joint used in a related air conditioning device, the refrigerant is evenly distributed into the plurality of distribution tubes 40 via structural characteristics of the distributor 50 itself.

In addition, in the present disclosure, the heat exchanger can be provided with a heat dissipation fin 60 on the plurality of heat exchange tubes 20, resulting in improving a heat exchange area. An end of the plurality of heat exchange tubes 20 away from the connection tube 10 is in communication with the connection tube 10, thereby converging the refrigerant in the plurality of heat exchange tubes 20, which is not described in detail herein.

In summary, in the heat exchanger and the air conditioning device of the present disclosure, by providing the plurality of connection joints 30 and the distribution tubes 40, when the heat exchanger is in operation, the refrigerant in the connection tube 10 is injected towards the connection port 311 of the plurality of connection joint 30 via the plurality of distribution hole 41 of the distribution tube 40, and introduced into the plurality of heat exchange tube 20 via the plurality of connection joints 30, such that the refrigerant can be evenly introduced into each of the plurality of heat exchange tubes 20, i.e., playing a role in optimizing the liquid separation process, and resulting in improving heat exchange effect when the heat exchanger is in operation, i.e., improving the performance of the air conditioning device having the heat exchanger. The plurality of heat exchange tubes 20 are connected to the connection tube 10 via the plurality of connection joints 30, facilitating assembling and connecting the plurality of heat exchange tubes 20 with the connection tube 10.

The various technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered within the scope of the specification.

One of ordinary skill in the art should recognize that the above embodiments are used only to illustrate the present disclosure and are not used to limit the present disclosure, and that appropriate variations and improvements to the above embodiments fall within the protection scope of the present disclosure so long as they are made without departing from the substantial spirit of the present disclosure.

Claims

1. A heat exchanger, comprising a connection tube, a plurality of heat exchange tubes and a plurality of connection joints, wherein the plurality of heat exchanger tubes and the plurality of connection joints corresponds to each other one by one, each of the plurality of the heat exchange tubes is in communication with the connection tube via a corresponding connection joint; and wherein each of the plurality of connection joints is provided with a connection port, a cross section of the connection port is circular-shaped, and each of the plurality of connection joints is connected to and in communication with the connection tube via the connection port; the connection tube is provided with a distribution tube along an arrangement direction of the plurality of heat exchange tubes, the distribution tube is provided with a plurality of distribution holes matching with the connection port, and each of the plurality of distribution holes is arranged right opposite to a corresponding connection port.

2. The heat exchanger of claim 1, wherein a distance between adjacent two of the plurality of connection joints is equal to a distance between corresponding two of the plurality of heat exchange tubes, respectively.

3. The heat exchanger of claim 1, wherein each of the plurality of connection joints is provided with a turbulator, and the connection portion is in communication with the heat exchange tube via the turbulator.

4. The heat exchanger of claim 3, wherein the turbulator is a throttling ring, the throttling ring is fixed in each of the plurality of connection joints; the throttling ring is provided with a flow passage hole, and the flow passage hole is in communication with the heat exchange tube.

5. The heat exchanger of claim 4, wherein each of the plurality of connection joints is provided with a step-shaped surface, an outer periphery wall of the throttling ring abuts against the step-shaped surface, and the throttling ring is fixed to the connection joint.

6. The heat exchanger of claim 4, wherein a plurality of flow passage holes are provided on the throttling ring, and the plurality of flow passage holes are spaced from each other; and sectional areas of the plurality of flow passage holes are different.

7. The heat exchanger of claim 1, wherein each of the plurality of connection joints comprises a circular-shaped joint portion, each of the plurality of connection joints is disposed on the connection tube via the circular-shaped joint portion; and the connection port is disposed on the circular-shaped joint portion.

8. The heat exchanger of claim 7, wherein the connection tube 10 is provided with a circular-shaped mounting hole, the circular-shaped joint portion is inserted into the circular-shaped mounting hole, and a depth of the circular-shaped joint portion inserting into the circular-shaped mounting hole is in a range of 2 mm to 10 mm.

9. The heat exchanger of claim 7, wherein each of the plurality of connection joints further comprises a heat exchange-tube inserting portion and a transition connecting portion, and the heat exchange-tube inserting portion is connected to and in communication with the circular-shaped joint portion via the transition connecting portion; and the heat exchange tube is disposed on each of the plurality of connection joint via the heat exchange-tube inserting portion.

10. The heat exchanger of claim 1, wherein the connection tube is provided with at least one dividing plate, the at least one dividing plate is disposed in the connection tube along an arrangement direction of the plurality of heat exchange tubes to divide the connection tube into a plurality of independent cavities; and the connection tube is provided with a distribution tube in each of the plurality of independent cavities.

11. The heat exchanger of claim 10, wherein the distribution tube is provided with the plurality of distribution holes matching with the connection port and an inlet, and the inlet is not aligned with the plurality of distribution holes.

12. The heat exchanger of claim 10, wherein the distribution tube is provided with an inlet, the distribution tube is disposed inside the connection tube, the distribution tube comprises a first sidewall and second sidewall opposite to each other, the inlet is disposed on the first sidewall of the distribution tube, and a distance between the first sidewall of the distribution tube and the inner surface of the connection tube is smaller than a distance between the second sidewall of the distribution tube and the inner surface of the connection tube.

13. The heat exchanger of claim 12, wherein the first sidewall of the distribution tube is tangential to the inner surface of the connection tube.

14. The heat exchanger of claim 10, further comprising a distributor, wherein the distributor is provided with a plurality of capillaries matching with the distribution tube, and the distributor is capable of being in communication with a distribution tube corresponding to the distributor via the plurality of capillaries.

15. An air conditioning device, comprising a device main body and a heat exchanger, wherein the heat exchanger is disposed on the device main body and the heat exchanger is a heat exchanger of claim 1.