A heat exchange device

Abstract

The application provides a heat exchange device, and relates to the technical field of heat exchange. The heat exchange device comprises a first heat exchange device, a liquid storage device and a second heat exchange device which are stacked, the first heat exchange device is provided with alternately arranged first flow channels and second flow channels, the second heat exchange device is provided with alternately arranged third flow channels and fourth flow channels, the liquid storage device is provided with a liquid storage cavity, the first flow channels and the third flow channels are both connected with the liquid storage cavity, the first flow channels are used for passing in gaseous first medium, and the second flow channels and the fourth flow channels are both used for passing in liquid second medium. The heat exchange device has high integration degree, and can reduce space occupation and heat loss.

Description

Technical Field

[0001] This application relates to the field of heat exchange technology, and more specifically, to a heat exchange device. Background Technology

[0002] As an important component of modern vehicles, the performance of automotive air conditioning systems directly affects driving comfort and energy efficiency.

[0003] In traditional automotive air conditioning heat exchange systems, the condenser and coolant reservoir are designed as separate components, connected by external piping. This split design results in the entire heat exchange system occupying a large installation space, increasing the complexity of the vehicle layout. Furthermore, due to the long connecting pipes, the cooling medium experiences additional heat loss during transmission, reducing the system's heat exchange efficiency. Utility Model Content

[0004] The purpose of this application includes, for example, providing a heat exchange device with a high degree of integration, which can reduce space occupation and heat loss.

[0005] The embodiments of this application can be implemented as follows:

[0006] An embodiment of this application provides a heat exchange device, which includes a first heat exchange device, a liquid storage device, and a second heat exchange device stacked together. The first heat exchange device has alternating first and second flow channels, and the second heat exchange device has alternating third and fourth flow channels. The liquid storage device has a liquid storage chamber, and the first and third flow channels are both connected to the liquid storage chamber. The first flow channel is used to introduce a gaseous first medium, and the second and fourth flow channels are both used to introduce a liquid second medium.

[0007] Optionally, the first heat exchange device includes a plurality of first plates stacked sequentially, with alternating first and second flow channels formed between the plurality of first plates; the first heat exchange device is provided with an air inlet and a first through hole penetrating at least a portion of the first plates, the air inlet being connected to the plurality of first flow channels, the first through hole being connected to the plurality of first flow channels, and the first through hole being connected to the liquid storage chamber.

[0008] Optionally, the first heat exchange device has a first water inlet and a first water outlet that penetrate at least a portion of the first plate. The first water inlet is simultaneously connected to a plurality of second flow channels, and the first water outlet is simultaneously connected to a plurality of second flow channels.

[0009] Optionally, the second heat exchange device includes a plurality of second plates stacked sequentially, with alternating third and fourth flow channels formed between the plurality of second plates; the second heat exchange device has a second through hole penetrating at least a portion of the second plates, the second through hole being connected to the plurality of third flow channels, and the second through hole being connected to the liquid storage chamber.

[0010] Optionally, the second heat exchange device is provided with a second water inlet and a second water outlet that penetrate at least a portion of the second plate. The second water inlet is simultaneously connected to a plurality of the fourth flow channels, and the second water outlet is simultaneously connected to a plurality of the fourth flow channels.

[0011] Optionally, the liquid storage device includes a plurality of third pieces stacked sequentially, with a liquid storage cavity provided between two adjacent third pieces, and any one of the first flow channels is connected to any one of the liquid storage cavities.

[0012] Optionally, the liquid storage device is provided with a third through hole and a fourth through hole that penetrate multiple third pieces. The third through hole is simultaneously connected to multiple first flow channels and multiple liquid storage chambers. The fourth through hole is simultaneously connected to multiple third flow channels and multiple liquid storage chambers.

[0013] Optionally, the third piece includes a bottom wall and a side wall connected to each other. A protruding ridge is provided on the bottom wall. The protruding ridge abuts against the bottom wall of the adjacent third piece. One end of the protruding ridge is connected to the side wall, and a gap is provided between the other end of the protruding ridge and the side wall. The third through hole and the fourth through hole are respectively located on both sides of the protruding ridge.

[0014] Optionally, in the height direction of the heat exchanger, the end of the convex ridge facing the second sidewall is lower than the third through hole.

[0015] Optionally, the first heat exchange device, the liquid storage device, and the second heat exchange device are stacked sequentially.

[0016] The beneficial effects of the heat exchange device provided in this application embodiment include, for example, in order to improve the integration of the heat exchange device, a heat exchange device is designed, which includes a first heat exchange device, a liquid storage device and a second heat exchange device stacked together. The first heat exchange device is provided with alternating first flow channels and second flow channels, and the second heat exchange device is provided with alternating third flow channels and fourth flow channels. The liquid storage device is provided with a liquid storage chamber. The first flow channel and the third flow channel are both connected to the liquid storage chamber. The first flow channel is used to introduce a gaseous first medium, and the second flow channel and the fourth flow channel are both used to introduce a liquid second medium.

[0017] During the heat exchange process, a gaseous first medium is introduced into multiple first channels of the first heat exchange device. The first medium flows from the first channels into the storage chamber of the liquid storage device, and then from the storage chamber into multiple third channels of the second heat exchange device. At the same time, a liquid second medium is introduced into multiple second channels of the first heat exchange device and multiple fourth channels of the second heat exchange device. The first medium and the second medium in the first heat exchange device exchange heat. The storage chamber of the liquid storage device retains residual gaseous first medium. After heat exchange in the first channels, the liquid first medium flows into the third channels and then exchanges heat with the second medium in the fourth channels. Since the first heat exchange device, the liquid storage device and the second heat exchange device are stacked in sequence, the heat exchange equipment has a high degree of integration, which can reduce space occupation and heat loss. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of the heat exchange device from a first-person perspective in an embodiment of this application;

[0020] Figure 2 This is a partial structural diagram of the first heat exchange device in an embodiment of this application;

[0021] Figure 3 This is a partial structural diagram of the second heat exchange device in an embodiment of this application;

[0022] Figure 4 This is a partial structural diagram of the liquid storage device in an embodiment of this application;

[0023] Figure 5 This is an exploded view of the heat exchange device from a second perspective in an embodiment of this application;

[0024] Figure 6 This is an exploded view of the heat exchange device from a third-person perspective in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the third piece in an embodiment of this application.

[0026] Icons: 10-Heat exchange equipment; 100-First heat exchange device; 110-First flow channel; 120-Second flow channel; 130-First plate; 140-Air inlet; 150-First through hole; 160-First water inlet; 170-First water outlet; 180-Sixth through hole; 200-Liquid storage device; 210-Liquid storage chamber; 220-First connecting hole; 230-Second connecting hole; 240-Third plate; 241-Bottom wall ; 2411-Protruding ridge; 242-Side wall; 2421-First side wall; 2422-Second side wall; 243-Gap; 250-Third through hole; 260-Fourth through hole; 270-Third connecting hole; 300-Second heat exchange device; 310-Third flow channel; 320-Fourth flow channel; 330-Second plate; 340-Second through hole; 350-Second water inlet hole; 360-Second water outlet hole; 370-Fifth through hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0032] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0033] Please refer to Figures 1-4 The embodiments of this application provide a heat exchange device 10, including a first heat exchange device 100, a liquid storage device 200 and a second heat exchange device 300 stacked together. The first heat exchange device 100 is provided with alternating first flow channels 110 and second flow channels 120. The second heat exchange device 300 is provided with alternating third flow channels 310 and fourth flow channels 320. The liquid storage device 200 is provided with a liquid storage chamber 210. The first flow channel 110 and the third flow channel 310 are both connected to the liquid storage chamber 210. The first flow channel 110 is used to introduce a gaseous first medium, and the second flow channel 120 and the fourth flow channel 320 are both used to introduce a liquid second medium.

[0034] In this embodiment, the first heat exchange device 100, the liquid storage device 200, and the second heat exchange device 300 are stacked sequentially. Of course, in other embodiments, the first heat exchange device 100, the second heat exchange device 300, and the liquid storage device 200 can be stacked sequentially, or the second heat exchange device 300, the first heat exchange device 100, and the liquid storage device 200 can be stacked sequentially.

[0035] The heat exchange device 10 is generally rectangular. The first heat exchange device 100, the liquid storage device 200 and the second heat exchange device 300 are stacked sequentially along the width direction of the heat exchange device 10. The first flow channel 110 and the second flow channel 120 are arranged alternately along the width direction of the heat exchange device 10. The third flow channel 310 and the fourth flow channel 320 are arranged alternately along the width direction of the heat exchange device 10.

[0036] Multiple first channels 110 are used to introduce a gaseous first medium, and multiple second channels 120 and multiple fourth channels 320 are used to introduce a liquid second medium. The first medium in the first channel 110 can exchange heat with the second medium in the second channel 120. After heat exchange, the first medium in the first channel 110 enters the liquid storage chamber 210. The liquid storage chamber 210 will retain residual gaseous first medium. The liquid first medium flows into multiple third channels 310, and the first medium in the third channel 310 exchanges heat with the second medium in the fourth channel 320.

[0037] During the heat exchange process, a gaseous first medium is introduced into multiple first channels 110 of the first heat exchange device 100. The first medium flows from the first channel 110 into the liquid storage chamber 210 of the liquid storage device 200, and then from the liquid storage chamber 210 into multiple third channels 310 of the second heat exchange device 300. At the same time, a liquid second medium is introduced into multiple second channels 120 of the first heat exchange device 100 and multiple fourth channels 320 of the second heat exchange device 300. The first medium and the second medium in the first heat exchange device 100 exchange heat. The liquid storage chamber 210 of the liquid storage device 200 will retain residual gaseous first medium. After heat exchange in the first channel 110, the liquid first medium flows into the third channel 310 and then exchanges heat with the second medium in the fourth channel 320. Since the first heat exchange device 100, the liquid storage device 200 and the second heat exchange device 300 are stacked in sequence, the heat exchange equipment 10 has a high degree of integration, which can reduce space occupation and heat loss during the heat exchange process.

[0038] In this embodiment, the first heat exchange device 100 includes a plurality of first plates 130 stacked sequentially, and alternating first flow channels 110 and second flow channels 120 are formed between the plurality of first plates 130.

[0039] Multiple first plates 130 are stacked sequentially along the width direction of the heat exchange device 10. Except for the first plates 130 located on both sides, any first plate 130 forms a first flow channel 110 with an adjacent first plate 130 and forms a second flow channel 120 with another adjacent first plate 130.

[0040] Since the first heat exchange device 100 is formed by stacking multiple first plates 130 in sequence, the space occupied by the first heat exchange device 100 itself is reduced, thereby improving the integration of the heat exchange device 10.

[0041] Combination Figure 5 , Figure 6 In this embodiment, the first heat exchange device 100 is provided with an air inlet 140 and a first through hole 150 that penetrate at least part of the first plate 130. The air inlet 140 is connected to multiple first flow channels 110, the first through hole 150 is connected to multiple first flow channels 110, and the first through hole 150 is connected to the liquid storage chamber 210.

[0042] The air inlet 140 penetrates through the first plate 130 except for the first plate 130 closest to the liquid storage device 200, and the first through hole 150 penetrates through the first plate 130 except for the first plate 130 farthest from the liquid storage device 200, so that the gaseous first medium entering through the air inlet 140 can flow into multiple first flow channels 110 at the same time, and the first medium can only flow to the liquid storage chamber 210 through the first through hole 150 after heat exchange.

[0043] In this embodiment, the first heat exchange device 100 is provided with a first water inlet 160 and a first water outlet 170 that penetrate at least part of the first plate 130. The first water inlet 160 is connected to multiple second flow channels 120 at the same time, and the first water outlet 170 is connected to multiple second flow channels 120 at the same time.

[0044] The first water inlet 160 penetrates the first plate 130 except for the first plate 130 furthest from the liquid storage device 200, and the first water outlet 170 penetrates the first plate 130 except for the first plate 130 furthest from the liquid storage device 200, so that the second medium entering through the first water inlet 160 can simultaneously flow into multiple second flow channels 120 and exchange heat with the first medium in multiple first flow channels 110.

[0045] In this embodiment, the second heat exchange device 300 includes a plurality of second plates 330 stacked sequentially, and a third flow channel 310 and a fourth flow channel 320 are formed alternately between the plurality of second plates 330.

[0046] Multiple second plates 330 are stacked sequentially along the width direction of the heat exchange device 10. Except for the second plates 330 located on both sides, any second plate 330 forms a third flow channel 310 with an adjacent second plate 330 and a fourth flow channel 320 with another adjacent second plate 330.

[0047] Since the second heat exchange device 300 is formed by stacking multiple second plates 330 in sequence, the space occupied by the second heat exchange device 300 itself is reduced, thereby improving the integration of the heat exchange equipment 10.

[0048] In this embodiment, the second heat exchange device 300 is provided with a second through hole 340 that penetrates at least part of the second plate 330. The second through hole 340 is connected to multiple third flow channels 310 and is also connected to the liquid storage chamber 210.

[0049] The second through hole 340 penetrates the second plate 330 except for the second plate 330 furthest from the liquid storage device 200, so that the first medium in the liquid storage chamber 210 can flow into multiple third channels 310 simultaneously through the second through hole 340 and exchange heat with the second medium in multiple fourth channels 320.

[0050] In this embodiment, the second heat exchange device 300 is provided with a second water inlet 350 and a second water outlet 360 that penetrate at least part of the second plate 330. The second water inlet 350 is connected to multiple fourth flow channels 320 at the same time, and the second water outlet 360 is connected to multiple fourth flow channels 320 at the same time.

[0051] The second inlet hole 350 and the second outlet hole 360 ​​both penetrate all the second plates 330. The second medium introduced through the second inlet hole 350 can flow into multiple fourth channels 320 at the same time and then be discharged through the second outlet hole 360.

[0052] The liquid storage device 200 has a first connecting hole 220 and a second connecting hole 230, neither of which is connected to the liquid storage chamber 210. The second water inlet 350, the first connecting hole 220 and the first water inlet 160 are connected in sequence, and the first water outlet 170, the second connecting hole 230 and the second water outlet 360 are connected in sequence, so that the second medium introduced through the second water inlet 350 can flow into the first water inlet 160 through the first connecting hole 220, and then flow into multiple second flow channels 120 simultaneously through the first water inlet 160, and then be discharged through the first water outlet 170, the second connecting hole 230 and the second water outlet 360.

[0053] In other embodiments, the liquid storage device 200 may not have the first connecting hole 220 and the second connecting hole 230. The first heat exchange device 100 and the second heat exchange device 300 are each introduced into the second medium and then discharged outward. That is, the first heat exchange device 100 is introduced into the second medium through the first water inlet hole 160, the second medium flows through multiple second flow channels 120 and then is discharged out through the first water outlet hole 170, and the second heat exchange device 300 is introduced into the second medium through the second water inlet hole 350, the second medium flows through multiple fourth flow channels 320 and then is discharged out through the second water outlet hole 360.

[0054] In this embodiment, the liquid storage device 200 includes a plurality of third plates 240 stacked sequentially, and a liquid storage cavity 210 is provided between two adjacent third plates 240. Any first flow channel 110 is connected to any liquid storage cavity 210.

[0055] Multiple third plates 240 are stacked sequentially along the width of the heat exchange device 10. At the same time, multiple first plates 130, multiple third plates 240 and multiple second plates 330 are stacked sequentially to form the entire heat exchange device 10, which greatly improves the integration of the heat exchange device 10 and reduces the space occupation.

[0056] In addition to a liquid storage chamber 210 between two adjacent third plates 240, a liquid storage chamber 210 is formed between the third plate 240 closest to the second heat exchange device 300 and the second plate 330 closest to the liquid storage device 200. The first flow channel 110 is connected to the liquid storage chamber 210, so that the first medium after heat exchange in the first heat exchange device 100 can flow into any liquid storage chamber 210.

[0057] In this embodiment, the liquid storage device 200 is provided with a third through hole 250 and a fourth through hole 260 that penetrate multiple third plates 240. The third through hole 250 is connected to multiple first flow channels 110 and multiple liquid storage chambers 210. The fourth through hole 260 is connected to multiple third flow channels 310 and multiple liquid storage chambers 210.

[0058] The third through hole 250 is matched with the first through hole 150 and is interconnected with it. The fourth through hole 260 is matched with the second through hole 340 and is interconnected with it. This allows the first medium after heat exchange in the first heat exchange device 100 to flow from the first through hole 150 into the third through hole 250, then from the third through hole 250 into each liquid storage chamber 210, and then from each liquid storage chamber 210 into each third flow channel 310 via the fourth through hole 260 and the second through hole 340.

[0059] In an optional embodiment, the second heat exchange device 300 has a fifth through hole 370 that penetrates at least a portion of the second plate 330, and the fifth through hole 370 is connected to multiple third flow channels 310; the liquid storage device 200 has a third connecting hole 270 that penetrates multiple third plates 240, and the third connecting hole 270 is not connected to the liquid storage chamber 210; the first heat exchange device 100 has a sixth through hole 180 that penetrates all the first plates 130, and the sixth through hole 180 is not connected to the first flow channel 110 or the second flow channel 120. The fifth through hole 370, the third connecting hole 270 and the sixth through hole 180 are connected in sequence to form the discharge path of the first medium.

[0060] The fifth through hole 370 penetrates the second plate 330 except for the second plate 330 which is furthest from the liquid storage device 200. The first medium flowing into each third flow channel 310 through the second through hole 340 exchanges heat with the second medium in each fourth flow channel 320, and then is discharged from the heat exchange device 10 through the fifth through hole 370, the third connecting hole 270 and the sixth through hole 180.

[0061] Please refer to Figure 7 In this embodiment, the third piece 240 includes a bottom wall 241 and a side wall 242 connected to each other. A protruding ridge 2411 is provided on the bottom wall 241, and the protruding ridge 2411 abuts against the bottom wall 241 of the adjacent third piece 240. The side wall 242 includes a first side wall 2421 and a second side wall 2422 disposed opposite to each other. One end of the protruding ridge 2411 is connected to the first side wall 2421, and a gap 243 is provided between the other end of the protruding ridge 2411 and the second side wall 2422. The third through hole 250 and the fourth through hole 260 are respectively located on both sides of the protruding ridge 2411.

[0062] A side wall 242 surrounds the bottom wall 241 in a ring. The first side wall 2421 and the second side wall 2422 are both part of the side wall 242. The protruding rib 2411 is formed by bending part of the bottom wall 241. The extension direction of the protruding rib 2411 is the height direction of the heat exchange device 10. The protruding rib 2411 of the third plate 240 closest to the second heat exchange device 300 abuts against the second plate 330. The protruding ribs 2411 of the other third plates 240 abut against the bottom wall 241 of the adjacent third plates 240.

[0063] In this embodiment, the protruding direction of the protruding ridges 2411 of each third piece 240 is consistent, but the protruding ridges 2411 of two adjacent third pieces 240 need to be staggered so that each protruding ridge 2411 can abut against the bottom wall 241 of the adjacent third piece 240.

[0064] In other embodiments, a single third piece 240 may have protruding ridges 2411 on both sides of the bottom wall 241, and the third piece 240 adjacent to the third piece 240 may be set as a planar structure. By alternately setting the two types of third pieces 240, the same effect can be achieved.

[0065] When the heat exchanger 10 is placed, the end with the gap 243 between the protrusion 2411 and the side wall 242 is placed downwards. The first medium entering each liquid storage chamber 210 through the third through hole 250 has two parts: gaseous and liquid. The gaseous first medium will flow upwards, thus being blocked by the protrusion 2411 and not easily flowing into the fourth through hole 260. The liquid first medium will flow into the fourth through hole 260 through the gap 243 between the protrusion 2411 and the side wall 242, and then flow into the second heat exchanger 300 for subsequent heat exchange. By providing the gap 243 between the protrusion 2411 and the side wall 242, a certain degree of gas-liquid separation effect is achieved in the liquid storage chamber 210, so that the first medium entering the second heat exchanger 300 for heat exchange is in a pure liquid form.

[0066] In this embodiment, in the height direction of the heat exchange device, the end of the protrusion 2411 facing the second sidewall 2422 is lower than the third through hole 250.

[0067] Since the first medium flowing into the third through hole 250 is still in a gas-liquid mixed state, by limiting the end of the protrusion 2411 facing the second side wall 2422 to be lower than the third through hole 250, the gaseous part of the first medium flowing into each liquid storage chamber 210 from the third through hole 250 can remain in the liquid storage chamber 210, while the liquid part can continue to be transported to the rear end through the gap 243 and the fourth through hole 260, effectively realizing gas-liquid separation.

[0068] In summary, the embodiments of this application provide a heat exchange device 10, which includes a first heat exchange device 100, a liquid storage device 200, and a second heat exchange device 300. Since the first heat exchange device 100, the liquid storage device 200, and the second heat exchange device 300 are stacked sequentially, and the first heat exchange device 100 is formed by stacking multiple first plates 130 sequentially, the second heat exchange device 300 is formed by stacking multiple second plates 330 sequentially, and the liquid storage device 200 is formed by stacking multiple third plates 240 sequentially, the integration of the entire heat exchange device 10 is high, which can reduce space occupation and heat loss during the heat exchange process.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat exchange device, characterized in that, The device includes a first heat exchange device (100), a liquid storage device (200), and a second heat exchange device (300) stacked together. The first heat exchange device (100) has alternating first flow channels (110) and second flow channels (120), and the second heat exchange device (300) has alternating third flow channels (310) and fourth flow channels (320). The liquid storage device (200) has a liquid storage chamber (210). The first flow channel (110) and the third flow channel (310) are both connected to the liquid storage chamber (210). The first flow channel (110) is used to introduce a gaseous first medium, and the second flow channel (120) and the fourth flow channel (320) are both used to introduce a liquid second medium.

2. The heat exchange device according to claim 1, characterized in that, The first heat exchange device (100) includes a plurality of first plates (130) stacked sequentially, and alternating first flow channels (110) and second flow channels (120) are formed between the plurality of first plates (130); The first heat exchange device (100) is provided with an air inlet (140) and a first through hole (150) that penetrate at least part of the first plate (130). The air inlet (140) is connected to multiple first flow channels (110) at the same time, and the first through hole (150) is connected to multiple first flow channels (110) at the same time. The first through hole (150) is also connected to the liquid storage chamber (210).

3. The heat exchange device according to claim 2, characterized in that, The first heat exchange device (100) has a first water inlet (160) and a first water outlet (170) that penetrate at least part of the first plate (130). The first water inlet (160) is connected to a plurality of second flow channels (120) at the same time, and the first water outlet (170) is connected to a plurality of second flow channels (120) at the same time.

4. The heat exchange device according to claim 1, characterized in that, The second heat exchange device (300) includes a plurality of second plates (330) stacked sequentially, with alternating third flow channels (310) and fourth flow channels (320) formed between the plurality of second plates (330); The second heat exchange device (300) has a second through hole (340) that penetrates at least part of the second plate (330). The second through hole (340) is connected to multiple third flow channels (310) and is also connected to the liquid storage chamber (210).

5. The heat exchange device according to claim 4, characterized in that, The second heat exchange device (300) is provided with a second water inlet (350) and a second water outlet (360) penetrating at least a portion of the second plate (330). The second water inlet (350) is connected to multiple fourth flow channels (320) at the same time, and the second water outlet (360) is connected to multiple fourth flow channels (320) at the same time.

6. The heat exchange device according to claim 1, characterized in that, The liquid storage device (200) includes a plurality of third pieces (240) stacked in sequence, and a liquid storage cavity (210) is provided between two adjacent third pieces (240). Any one of the first flow channels (110) is connected to any one of the liquid storage cavities (210).

7. The heat exchange device according to claim 6, characterized in that, The liquid storage device (200) is provided with a third through hole (250) and a fourth through hole (260) penetrating multiple third plates (240). The third through hole (250) is connected to multiple first flow channels (110) and multiple liquid storage chambers (210). The fourth through hole (260) is connected to multiple third flow channels (310) and multiple liquid storage chambers (210).

8. The heat exchange device according to claim 7, characterized in that, The third piece (240) includes a bottom wall (241) and a side wall (242) connected to each other. A protruding ridge (2411) is provided on the bottom wall (241), and the protruding ridge (2411) abuts against the bottom wall (241) of the adjacent third piece (240). The side wall (242) includes a first side wall (2421) and a second side wall (2422) arranged opposite to each other. One end of the protruding ridge (2411) is connected to the first side wall (2421), and a gap (243) is provided between the other end of the protruding ridge (2411) and the second side wall (2422). The third through hole (250) and the fourth through hole (260) are respectively located on both sides of the protruding ridge (2411).

9. The heat exchange device according to claim 8, characterized in that, In the height direction of the heat exchange device, the end of the protruding ridge (2411) facing the second sidewall (2422) is lower than the third through hole (250).

10. The heat exchange device according to claim 1, characterized in that, The first heat exchange device (100), the liquid storage device (200), and the second heat exchange device (300) are stacked in sequence.

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