CN112902709B

CN112902709B - Heat exchanger and temperature adjusting system with same

Info

Publication number: CN112902709B
Application number: CN201911220039.3A
Authority: CN
Inventors: 张�杰; 赵龙; 王鹏
Original assignee: Zhejiang Dunan Electro Mechanical Technology Co Ltd
Current assignee: Zhejiang Dunan Electro Mechanical Technology Co Ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2022-06-17
Anticipated expiration: 2039-12-03
Also published as: CN112902709A

Abstract

The invention provides a heat exchanger and a temperature adjusting system with the same, wherein the heat exchanger comprises: the heat exchanger comprises a cylinder body, a first heat exchanger and a second heat exchanger, wherein the cylinder body is provided with a first cavity, and a heat exchange pipe for a refrigerant to flow is arranged in the first cavity; the liquid side channel box is connected to the cylinder body; the liquid equalizing plate is provided with a liquid equalizing channel, the liquid equalizing plate is movably arranged in the liquid side tube box and is provided with a refrigerating position and a heating position, the liquid equalizing plate covers the tube opening of the heat exchange tube when being in the refrigerating position, the liquid equalizing channel corresponds to the tube opening and is connected with the heat exchange tube, and the liquid equalizing plate is separated from the heat exchange tube when being in the heating position. The heat exchanger has higher heat exchange efficiency.

Description

Heat exchanger and temperature adjusting system with same

Technical Field

The invention relates to the technical field of heat exchange equipment, in particular to a heat exchanger and a temperature adjusting system with the same.

Background

At present, for a water chilling unit, an evaporator adopted in a refrigeration state is mostly a dry shell and tube heat exchanger. The dry shell and tube heat exchanger has the characteristic of reliable oil return, so the dry shell and tube heat exchanger is widely applied to a water chilling unit. However, most of the refrigerants entering the heat exchange tubes of the dry shell-and-tube heat exchanger are refrigerant gas-liquid mixtures, and the refrigerant gas can not exchange heat basically, so that only refrigerant liquid exchanges heat in the heat exchange tubes, and if the amount of the refrigerant gas-liquid mixtures distributed to the heat exchange tubes is not uniform or the gas-liquid ratios are very different, the heat exchange effect of some heat exchange tubes is poor, and finally the whole heat exchanger cannot exchange heat fully, so that the heat exchange effect is poor.

In order to solve the problem, in the prior art, a liquid inlet of the dry-type shell-and-tube heat exchanger is used for equalizing the flow of a high-flow-rate refrigerant gas-liquid mixture through a liquid-equalizing plate with holes fixed at the liquid end of the heat exchanger, liquid-equalizing holes of the liquid-equalizing plate correspond to pipe orifices of the heat exchange tubes one to one, the cross-sectional area of each liquid-equalizing hole is smaller than that of the pipe orifice of the heat exchange tube, and the refrigerant gas-liquid mixture is guaranteed to uniformly flow into the heat exchange tubes.

However, the dry shell-and-tube heat exchanger with the structure is used as a condenser in a heating state, the flowing direction of a refrigerant in the heat exchange tube is opposite to that of the cooling state, and a liquid refrigerant flowing out of the tube opening of the heat exchange tube needs to pass through the liquid equalizing hole of the liquid equalizing plate, so that the liquid equalizing plate additionally increases the flowing resistance, and the performance of the dry shell-and-tube heat exchanger in the heating state is adversely affected and is reduced.

Disclosure of Invention

In view of the above, there is a need for an improved heat exchanger and a temperature adjustment system having the same, so that the performance of the heat exchanger in both cooling and heating states is better.

The present invention provides a heat exchanger comprising: the heat exchanger comprises a cylinder body, a first heat exchanger and a second heat exchanger, wherein the cylinder body is provided with a first cavity, and a heat exchange pipe for a refrigerant to flow is arranged in the first cavity; the liquid side channel box is connected to the cylinder body; the liquid equalizing plate is provided with a liquid equalizing channel, the liquid equalizing plate is movably arranged in the liquid side tube box and is provided with a refrigerating position and a heating position, the liquid equalizing plate covers the tube opening of the heat exchange tube when being in the refrigerating position, the liquid equalizing channel corresponds to the tube opening and is connected with the heat exchange tube, and the liquid equalizing plate is separated from the heat exchange tube when being in the heating position.

So set up, the barrel of heat exchanger is used for holding heat exchange tube and heat transfer medium, makes heat transfer medium can carry out the heat transfer with the refrigerant in the heat exchange tube in first cavity. The liquid equalizing plate is movably arranged in the liquid side tube box, when the heat exchanger is in a refrigerating state, the liquid equalizing plate covers the tube opening of the heat exchange tube, so that a refrigerant needs to enter the heat exchange tube through the liquid equalizing channel, and due to the throttling effect of the liquid equalizing plate, the balance of the amount of the refrigerant entering each heat exchange tube and the gas-liquid ratio is ensured, and the heat exchange effect is ensured. When the heat exchanger is in the heating state, the liquid-equalizing plate is separated from the heat exchange tube, and the tube opening of the heat exchange tube is exposed, so that a refrigerant flowing out of the heat exchange tube can not be blocked by the liquid-equalizing plate, and the problems that in the prior art, the liquid-equalizing plate additionally increases the flow resistance in the heating mode, the performance of the heat exchanger is adversely affected and the heat exchanger is lowered in the heating state are solved.

Further, in order to be able to lead the liquid-equalizing plate, the heat exchanger further comprises a limiting guide structure extending along the first direction, and the limiting guide structure is arranged in the liquid-side tube box and is connected with the liquid-equalizing plate so as to limit the liquid-equalizing plate to move along the first direction.

So set up for equal liquid board removes can the direction, thereby moves more reliably.

Further, for convenience of installation and improvement of adaptability, the first direction is parallel to the axial direction of the heat exchange tube, or the first direction is perpendicular to the axial direction of the heat exchange tube.

So set up for it can move towards appropriate direction as required to all liquid boards.

Further, for the convenience of installation, reduce cost, spacing guide structure includes the gag lever post, and liquid side tube case is including setting up the liquid side tube sheet at the first end of barrel and the liquid side end cover of being connected with the liquid side tube sheet, and the first end of gag lever post is connected on the liquid side end cover, and the second end of gag lever post is connected on the liquid side tube sheet.

So set up, can enough reliably lead to the samming board, can simplify structure reduce cost again.

Furthermore, in order to ensure that the limiting rod is reliably installed, a first installation hole which is in plug-in fit with the first end of the limiting rod is formed in the liquid side end cover; and/or a second mounting hole which is tightly matched with the second end of the limiting rod is arranged on the liquid side tube plate.

So set up for the gag lever post is convenient for more install and dismantle.

Furthermore, in order to enable the refrigerant to reliably flow in or out as required, a second cavity, a refrigerant inlet and a refrigerant outlet are arranged on the liquid side pipe box, a partition bulge is further arranged in the liquid side pipe box and divides the second cavity into a liquid equalizing cavity connected with the refrigerant inlet and a refrigerant outlet cavity connected with the refrigerant outlet, the liquid equalizing cavity and the refrigerant outlet cavity are connected through an opening, the liquid equalizing plate seals the opening when in the refrigerating position, and the liquid equalizing plate opens the opening when in the heating position.

By the arrangement, the refrigerant inlet and the refrigerant outlet can be separated, and the refrigerant leakage or backflow is avoided.

Further, in order to ensure the heat exchange efficiency during cooling, the number of the refrigerant inlets on the liquid side tube box is larger than that of the refrigerant outlets.

By the arrangement, the inflow efficiency of the refrigerant during refrigeration is ensured, and further the heat exchange efficiency is ensured.

Further, in order to promote the liquid-equalizing effect, the liquid-equalizing channel comprises a liquid-equalizing through hole and a capillary tube, the liquid-equalizing through hole penetrates through the liquid-equalizing plate, and the capillary tube is arranged in the liquid-equalizing through hole in a one-to-one correspondence manner.

So set up, can utilize the throttle effect of capillary to make the refrigerant equipartition effect better.

Further, in order to improve the liquid equalizing effect, the liquid equalizing channels are arranged in one-to-one correspondence with the heat exchange tubes.

So set up, can ensure that each heat exchange tube all can be through the feed liquor of samming passageway.

According to another aspect of the present invention, there is provided a temperature regulation system comprising a heat exchanger, the heat exchanger being as described above.

By the arrangement, the refrigerating and heating efficiencies of the temperature adjusting system can be improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a heat exchanger according to an embodiment of the present invention in a cooling state;

FIG. 2 is an enlarged view of a portion of the liquid-side channel box of FIG. 1;

fig. 3 is a schematic cross-sectional view of a heat exchanger in a heating state according to an embodiment of the present invention.

Description of the main elements

10. A barrel; 11. a first chamber; 12. a liquid inlet; 13. a liquid outlet; 20. a heat exchange pipe; 30. a liquid side channel box; 31. a liquid side tube sheet; 32. a liquid side end cap; 321. a refrigerant inlet; 322. a refrigerant outlet; 33. partitioning the bulges; 40. a liquid homogenizing plate; 41. a capillary tube; 50. a limiting guide structure; 61. a gas-side tube sheet; 62. a gas side end cap; 63. and a gas side outlet.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, according to an embodiment of the present invention, a heat exchanger includes a cylinder 10, a liquid side channel box 30 and a liquid equalizing plate 40, wherein the cylinder 10 has a first chamber 11, and a heat exchange tube 20 for flowing a refrigerant is disposed in the first chamber 11; the liquid side channel box 30 is connected to the cylinder 10; the liquid equalizing plate 40 is provided with a liquid equalizing channel, the liquid equalizing plate 40 is movably arranged in the liquid side channel box 30 and has a refrigerating position and a heating position, when the liquid equalizing plate is in the refrigerating position, the liquid equalizing plate 40 covers the pipe orifice of the heat exchange pipe 20, the liquid equalizing channel is correspondingly connected with the pipe orifice, and when the liquid equalizing plate 40 is in the heating position, the liquid equalizing plate 40 is separated from the heat exchange pipe 20.

The cylinder 10 of the heat exchanger in this embodiment is used for accommodating the heat exchange tube 20 and a heat exchange medium, so that the heat exchange medium can exchange heat with a refrigerant in the heat exchange tube 20 in the first chamber 11. The liquid equalizing plate 40 is movably arranged in the liquid side tube box 30, when the heat exchanger is in a refrigerating state, the liquid equalizing plate 40 covers the tube opening of the heat exchange tube 20, so that the refrigerant needs to enter the heat exchange tube 20 through the liquid equalizing channel, and due to the throttling effect of the liquid equalizing plate 40, the balance of the amount and the gas-liquid ratio of the refrigerant entering each heat exchange tube 20 is ensured, and the heat exchange effect is ensured. When the heat exchanger is in a heating state, the liquid equalizing plate 40 is separated from the heat exchange tube 20, and the tube opening of the heat exchange tube 20 is exposed, so that a refrigerant flowing out of the heat exchange tube 20 can not be blocked by the liquid equalizing plate 40, and the problems that in the prior art, the liquid equalizing plate additionally increases flow resistance in a heating mode, the performance of the heat exchanger is adversely affected and the heat exchanger is lowered in the heating state are solved.

The following description will be made of the detailed structure and operation process of the heat exchanger, taking the heat exchanger as a dry shell-and-tube heat exchanger as an example:

as shown in fig. 1, in the illustrated embodiment, a cylinder 10 of the heat exchanger is provided with a liquid inlet 12 and a liquid outlet 13 communicating with a first chamber 11. Wherein the inlet 12 is used for the heat exchange medium such as water to enter the first chamber 11, and the outlet 13 is used for the heat exchange medium to flow out of the first chamber 11. In the first chamber 11, the heat exchange medium exchanges heat with the refrigerant in the heat exchange tube 20.

Preferably, baffles, not shown, may also be provided in the first chamber 11 in order to ensure adequate heat exchange. The baffle plates can be arranged on the heat exchange tube 20 at intervals to force the heat exchange medium to move repeatedly in the first chamber 11, increase the stroke in the first chamber 11, prolong the heat exchange time with the refrigerant in the heat exchange tube 20 and ensure that the heat exchange is more sufficient.

As shown in fig. 1, the liquid side channel box 30 is provided at a first end of the cylindrical body 10, and the gas side channel box is provided at a second end of the cylindrical body 10. In the cooling state of the heat exchanger, the refrigerant flows in from the liquid side channel box 30, enters the heat exchange tube 20 for heat exchange, and then flows out from the gas side channel box. When the heat exchanger is in a heating state, a refrigerant flows in from the gas side tube box, enters the heat exchange tube 20 for heat exchange, and then flows out from the liquid side tube box 30. The gas-side tube box comprises a gas-side tube plate 61 and a gas-side end cover 62 connected to the gas-side tube plate 61, and the gas-side tube plate 61 and the gas-side end cover 62 are matched to form a third chamber.

Optionally, in order to ensure a good liquid-homogenizing effect, the liquid-homogenizing channel includes a liquid-homogenizing through hole and capillary tubes 41, the liquid-homogenizing through hole penetrates through the liquid-homogenizing plate 40, and the capillary tubes 41 are arranged in the liquid-homogenizing through hole in a one-to-one correspondence manner. The capillary tube 41 is arranged to force the refrigerant to be uniformly distributed on the cross section of the liquid-distributing plate 40, so that the refrigerant quantity entering each heat exchange tube 20 is ensured to be more balanced, and the heat exchange efficiency is ensured.

Of course, in other embodiments, the capillary may be omitted, and the liquid-homogenizing plate 40 may be provided with the liquid-homogenizing through hole.

Preferably, the liquid equalizing channels are provided in one-to-one correspondence with the heat exchange tubes 20, so that the liquid equalizing effect can be improved.

Optionally, in order to guide the movement of the soaking plate 40 and ensure the reliability of the movement of the soaking plate 40 in the liquid-side channel box 30, the heat exchanger further includes a limiting guide structure 50 extending along the first direction, and the limiting guide structure 50 is disposed in the liquid-side channel box 30 and connected to the soaking plate 40 to limit the movement of the soaking plate 40 along the first direction.

Wherein the first direction is parallel to the axial direction of the heat exchange tube 20, or the first direction is perpendicular to the axial direction of the heat exchange tube 20.

In the present embodiment, the first direction is a direction parallel to the axial direction of the heat exchange tubes 20, that is, the soaking plate 40 moves in the liquid-side tube box 30 in the left-right direction shown in fig. 1. Of course, in other embodiments, the liquid-equalizing plate 40 may also be moved in the liquid-side tank box 30 in the up-down direction shown in fig. 1 as long as it can cover the nozzles of the heat exchange tubes 20 or expose the nozzles of the heat exchange tubes 20 as needed.

Alternatively, as shown in fig. 1 and fig. 2, in order to facilitate installation and enable reliable guidance for the liquid equalizing plate 40, the limiting guide structure 50 includes a limiting rod, the liquid side tube box 30 includes a liquid side tube plate 31 disposed at a first end of the cylinder 10 and a liquid side end cover 32 connected to the liquid side tube plate 31, the first end of the limiting rod is connected to the liquid side end cover 32, and a second end of the limiting rod is connected to the liquid side tube plate 31.

Wherein, the liquid side tube plate 31 is fixedly arranged at the first end of the cylinder 10, and the liquid side end cover 32 is fixedly connected to the liquid side tube plate 31, and forms a second chamber with the liquid side tube plate 31. The limiting rod is arranged in the second cavity. Because the structure of the limiting rod is simple, and the processing and the installation are very convenient, the production and the processing difficulty can be reduced by adopting the limiting rod for guiding, and the liquid equalizing plate 40 can be reliably guided.

Of course, in other embodiments, the limiting and guiding structure 50 may adopt other structures capable of limiting and guiding the liquid homogenizing plate 40. For example, a slide groove provided in the liquid-side end cap 32.

Optionally, in order to stably and reliably mount the limiting rod, the liquid-side end cover 32 is provided with a first mounting hole in insertion fit with the first end of the limiting rod; and/or a second mounting hole tightly matched with the second end of the limiting rod is arranged on the liquid side tube plate 31.

Therefore, the limiting rod can be limited on the liquid side end cover 32 through the first mounting hole, and the limiting rod is matched with the first mounting hole in an inserting mode, so that the liquid side end cover 32 can be more conveniently detached, and the liquid side end cover 32 can be quite conveniently detached.

It should be noted that the first mounting hole may be a through hole or a blind hole. The cross-sectional shape of the first mounting hole may be any shape such as a circle, a rectangle, or a hexagon. In order to facilitate the insertion and matching, the first mounting hole is a light hole.

In order to ensure that the limiting rod can be reliably fixed, the second mounting hole is tightly matched with the second end of the limiting rod. For example, the second mounting hole may be a threaded hole.

Optionally, in this embodiment, the liquid-side tube box 30 is provided with a second chamber, a refrigerant inlet 321, and a refrigerant outlet 322, the liquid-side tube box 30 is further provided with a dividing protrusion 33, the dividing protrusion 33 divides the second chamber into a liquid-equalizing chamber connected to the refrigerant inlet 321 and a refrigerant outlet chamber connected to the refrigerant outlet 322, the liquid-equalizing chamber and the refrigerant outlet chamber are connected through an opening, when the liquid-equalizing plate 40 is in a cooling position, the opening is closed by the liquid-equalizing plate 40, and when the liquid-equalizing plate 40 is in a heating position, the opening is opened by the liquid-equalizing plate 40.

As shown in fig. 2, the gap between the dividing projection 33 and the liquid-side tube plate 31 forms an opening connecting the liquid equalizing chamber and the refrigerant outlet chamber.

In a refrigerating state, a refrigerant enters the liquid-equalizing cavity from the refrigerant inlet 321, and the liquid-equalizing plate 40 is pressed against the pipe orifice of the heat exchange pipe 20 on the right side in fig. 2 by the thrust of the refrigerant, so that the opening is closed, the refrigerant does not flow into the refrigerant outlet cavity, but enters the heat exchange pipe 20 through the liquid-equalizing channel on the liquid-equalizing plate 40, and the refrigerant entering the heat exchange pipe 20 can be more uniform by the liquid-equalizing plate 40.

In a heating state, the refrigerant flows out of the heat exchange tube 20, and since the cross-sectional area of the liquid equalizing channel on the liquid equalizing plate 40 is smaller than the cross-sectional area of the nozzle of the heat exchange tube 20, the liquid equalizing plate 40 moves to the left side under the thrust of the refrigerant in the heat exchange tube 20, so that the opening is opened and the nozzle of the heat exchange tube 20 is exposed, and the refrigerant flowing out of the heat exchange tube 20 flows out of the refrigerant outlet 322 through the opening and the refrigerant outlet cavity. Therefore, resistance generated by the liquid equalizing plate 40 when the refrigerant flows out is avoided, and the efficiency of the refrigerant flowing out is improved.

Optionally, in order to ensure the heat exchange efficiency, the number of the refrigerant inlets 321 on the liquid-side channel box 30 is greater than the number of the refrigerant outlets 322. Thus, the refrigerant in the gas-liquid mixed state can more quickly enter the liquid side channel box 30 in the refrigeration state, so that the quantity of the liquid refrigerant participating in heat exchange is enough.

According to another aspect of the present invention, there is provided a temperature regulation system comprising a heat exchanger, the heat exchanger being as described above. The heat exchanger has good heat exchange efficiency no matter in a refrigerating state or a heating state, so that the efficiency of a temperature adjusting system using the heat exchanger is better.

The heat exchanger and the temperature adjusting system of the embodiment have the following technical effects:

under the refrigeration state, when the heat exchanger used as the evaporimeter, the gas-liquid mixture state refrigerant flowed into in the second cavity from refrigerant fluid pipe of refrigerant access connection, under the effect of refrigerant thrust, the liquid-equalizing board can be pushed to the rightmost side along the gag lever post, liquid-equalizing board right-hand member face and the laminating of liquid side tube sheet left end, the gas-liquid mixture state refrigerant can only pass through each liquid-equalizing channel after mixing once more in the second cavity and evenly flow to each heat exchange tube, because the refrigerant is by evenly distributed in each heat exchange tube, thereby make heat exchange tube heat transfer effect get good, promote heat exchanger heat transfer performance.

When the heat exchanger is used as a condenser in a heating state, high-pressure gaseous refrigerant flows into a third cavity of the gas-side tube box from a gas-side inlet of the gas-side tube box, is condensed into high-pressure liquid refrigerant in the heat exchange tube and flows to the left end of the heat exchange tube, and under the thrust action of the high-pressure liquid refrigerant, the liquid homogenizing plate can be pushed to the left side along the direction of the limiting rod to block the refrigerant inlet and open a circulation channel with a refrigerant outlet. At the moment, the refrigerant does not need to flow through the liquid homogenizing plate, so that the flow resistance of the refrigerant is reduced, and the heat exchange performance of the heat exchanger in a heating state is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims

1. A heat exchanger, comprising:

the heat exchanger comprises a cylinder (10), wherein the cylinder (10) is provided with a first cavity (11), and a heat exchange pipe (20) for flowing of a refrigerant is arranged in the first cavity (11);

a liquid side channel box (30), wherein the liquid side channel box (30) is connected to the cylinder (10);

liquid equalizing plate (40), be provided with liquid equalizing channel on liquid equalizing plate (40), liquid equalizing plate (40) movably sets up in liquid side channel case (30), and have the refrigeration position and heat the position, be in during the refrigeration position, liquid equalizing plate (40) covers heat exchange tube (20) mouth of pipe, just liquid equalizing channel with the mouth of pipe corresponds to be connected, is in during the heat position, liquid equalizing plate (40) with heat exchange tube (20) separation.

2. The heat exchanger according to claim 1, further comprising a limiting guide structure (50) extending in a first direction, wherein the limiting guide structure (50) is disposed in the liquid side channel box (30) and connected to the liquid uniforming plate (40) to limit the movement of the liquid uniforming plate (40) in the first direction.

3. A heat exchanger according to claim 2, wherein the first direction is parallel to an axial direction of the heat exchange tube (20).

4. The heat exchanger according to claim 2, wherein the limiting guide structure (50) comprises a limiting rod, the liquid side tube box (30) comprises a liquid side tube plate (31) arranged at the first end of the cylinder body (10) and a liquid side end cover (32) connected with the liquid side tube plate (31), the first end of the limiting rod is connected to the liquid side end cover (32), and the second end of the limiting rod is connected to the liquid side tube plate (31).

5. The heat exchanger according to claim 4, characterized in that the liquid side end cover (32) is provided with a first mounting hole which is in plug fit with the first end of the limiting rod; and/or a second mounting hole which is tightly matched with the second end of the limiting rod is arranged on the liquid side tube plate (31).

6. The heat exchanger according to any one of claims 1 to 5, wherein a second chamber, a refrigerant inlet (321) and a refrigerant outlet (322) are provided on the liquid side tube box (30), a dividing protrusion (33) is further provided in the liquid side tube box (30), the dividing protrusion (33) divides the second chamber into a liquid equalizing chamber connected to the refrigerant inlet (321) and a refrigerant outlet chamber connected to the refrigerant outlet (322), the liquid equalizing chamber and the refrigerant outlet chamber are connected by an opening, the liquid equalizing plate (40) closes the opening in the cooling position, and the liquid equalizing plate (40) opens the opening in the heating position.

7. The heat exchanger according to claim 6, wherein the number of refrigerant inlets (321) on the liquid side header (30) is greater than the number of refrigerant outlets (322).

8. The heat exchanger according to any one of claims 1 to 5, wherein the liquid-equalizing channel comprises a liquid-equalizing through hole and capillary tubes (41), the liquid-equalizing through hole penetrates through the liquid-equalizing plate (40), and the capillary tubes (41) are arranged in the liquid-equalizing through hole in a one-to-one correspondence manner.

9. The heat exchanger according to any one of claims 1 to 5, wherein the liquid-equalizing channels are provided in one-to-one correspondence with the heat exchange tubes (20).

10. A temperature conditioning system comprising a heat exchanger according to any one of claims 1 to 9.