Heat exchanger and flow channel plate

Abstract

This invention provides a heat exchanger and a flow channel plate. The heat exchanger includes a first flow channel plate and a second flow channel plate; a flow channel space is formed between the body and the second flow channel plate, a partition is located within the flow channel space, a fluid inlet communicates with the first flow channel, and a fluid outlet communicates with the second flow channel, forming a flow channel from the fluid inlet through the first flow channel, the overflow channel, and the second flow channel, to the fluid outlet; a recess is provided on the side of the second flow channel plate facing the first flow channel plate, and the recess extends longitudinally along the partition; a space extending longitudinally along the partition is formed between the partition and the recess, the space including at least one inlet and at least one outlet communicating with the flow channel, the inlet and outlet being spaced apart in the longitudinal extension direction of the partition. The technical solution of this invention solves the problem of high flow resistance in existing heat exchangers.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to a heat exchanger and flow channel plate. Background Technology

[0002] A heat exchanger typically includes a top plate, a bottom plate, and a first flow channel plate and a second flow channel plate that are alternately stacked between the top plate and the bottom plate. A flow channel for the passage of cooling medium can be formed between adjacent second flow channel plates and first flow channel plates. When the cooling medium flows in the flow channel, it often encounters resistance, i.e., flow resistance.

[0003] In existing technologies, when the fluid changes its flow direction along the channel between the second and first flow channels, a large flow resistance usually occurs, resulting in high pressure loss and reduced heat transfer performance. Summary of the Invention

[0004] The main objective of this invention is to provide a heat exchanger and flow channel plate to solve the problem of high flow resistance in existing heat exchangers.

[0005] To achieve the above objectives, the present invention provides a heat exchanger, including a first flow channel plate and a second flow channel plate; wherein the first flow channel plate includes a body portion and a partition portion, the second flow channel plate is stacked on the first flow channel plate, and a flow channel space is formed between the body portion and the second flow channel plate; the body portion is provided with a fluid inlet and a fluid outlet communicating with the flow channel space; the partition portion is located within the flow channel space, and the partition portion is used to divide the flow channel space into a first flow channel extending longitudinally along the partition portion on a first side of the partition portion, a second flow channel extending longitudinally along the partition portion on a second side of the partition portion, and a flow channel communicating with the first flow channel plate. The flow channel is a first flow channel and a second flow channel. The fluid inlet is connected to the first flow channel, and the fluid outlet is connected to the second flow channel to form a flow channel that enters from the fluid inlet and passes through the first flow channel, the flow channel and the second flow channel in sequence, and then to the fluid outlet. The second flow channel plate has a recess on the side facing the first flow channel plate, and the recess extends longitudinally along the partition. A space extending longitudinally along the partition is formed between the partition and the recess. The space includes at least one inlet and at least one outlet connected to the flow channel. The inlet and outlet are spaced apart in the longitudinal extension direction of the partition.

[0006] Furthermore, the partition has a first end close to the flow channel and a second end away from the flow channel, the second end of the partition being connected to the inner wall of the flow channel space; the partition is provided with a groove as an inlet of the space, and there is a gap between the first end of the partition and the inner wall of the recess, the gap serving as an outlet of the space.

[0007] Furthermore, the groove extends from the first side of the partition to the side of the partition facing the recess.

[0008] Furthermore, along the longitudinal extension direction of the partition, the partition includes two grooves spaced apart, one of the grooves serving as the inlet of the space; the other groove serving as the outlet of the space.

[0009] Furthermore, the groove serving as the inlet of the space extends from the first side of the partition to the side of the partition facing the recess; the groove serving as the outlet of the space extends from the second side of the partition to the side of the partition facing the recess; or, the groove serving as the outlet of the space extends from the first side of the partition to the side of the partition facing the recess.

[0010] Furthermore, when viewed in cross-section of the groove, at least part of the inner wall of the groove is arc-shaped.

[0011] Furthermore, the inner wall of the groove includes a first sidewall, a bottom wall, a second sidewall, and at least one arcuate wall, wherein the first sidewall and / or the second sidewall are connected to the bottom wall through the arcuate wall.

[0012] Furthermore, the arc-shaped wall is circular, with a radius greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

[0013] Furthermore, the groove is located between the middle position of the partition and the second end, and the distance between the middle position and the first end is equal to the distance between the middle position and the second end.

[0014] Furthermore, there are one or more grooves, and multiple grooves are arranged sequentially along the longitudinal direction of the partition.

[0015] Furthermore, the partition includes a first partition and a second partition connected to each other. The first partition is spaced apart from the inner wall of the first end of the flow channel space to form a flow channel. The second partition is connected to the inner wall of the second end of the flow channel space and is sealed to the second flow channel plate. The fluid inlet and the fluid outlet are located on both sides of the second partition.

[0016] Furthermore, the recess extends to the inner wall of the first end of the flow channel space, the first partition is embedded in the recess, the top wall of the first partition is spaced apart from the bottom wall of the recess, and the wall surface of the first side of the first partition and the wall surface of the second side of the first partition are sealed with the recess.

[0017] Furthermore, a portion of the first flow channel plate is recessed in the direction of the flow channel space to form a partition located within the flow channel space.

[0018] Furthermore, the first flow channel, the through flow channel, and the second flow channel are arranged in a U-shape.

[0019] Furthermore, the first flow channel plate and / or the second flow channel plate are formed by sheet metal stamping.

[0020] Furthermore, there are multiple first flow channel plates and multiple second flow channel plates, and the first flow channel plates and second flow channel plates are alternately arranged along the thickness direction of the first flow channel plate.

[0021] According to another aspect of the present invention, a flow channel plate is provided, comprising: a body portion having a receiving groove and a fluid inlet and a fluid outlet communicating with the receiving groove, the receiving groove having a partition portion for dividing the receiving groove into a first flow channel extending longitudinally along the partition portion on a first side of the partition portion, a second flow channel extending longitudinally along the partition portion on a second side of the partition portion, and a flow passage communicating with the first flow channel and the second flow channel, the fluid inlet communicating with the first flow channel, and the fluid outlet communicating with the second flow channel; the partition portion having a groove extending from a first side of the partition portion toward the first flow channel to a top side of the partition portion.

[0022] By applying the technical solution of this invention, compared to the method of having the fluid entering through the fluid inlet sequentially pass through the first flow channel, the overflow channel, and the second flow channel, bypassing the partition and flowing out through the fluid outlet, this application, by providing additional space, allows a portion of the first flow channel to run parallel to the space. This increases the cross-sectional area through which the fluid passes, allowing the fluid to be more evenly distributed in the portion of the first flow channel and the space. This reduces the flow velocity of the fluid in the portion of the first flow channel and the space, thereby reducing flow resistance. In this way, on the one hand, high pressure loss of the fluid can be avoided, thereby reducing the power consumption of the compressor; on the other hand, the fluid can pass through a larger surface area at a lower flow velocity, thereby improving heat transfer efficiency. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A schematic diagram of an embodiment of the heat exchanger of the present invention is shown;

[0025] Figure 2 It shows Figure 1 A schematic diagram of the structure of the first flow channel plate of the heat exchanger;

[0026] Figure 3 It shows Figure 2 A partial enlarged view of the first flow channel plate;

[0027] Figure 4 It shows Figure 1 A bottom view of the heat exchanger;

[0028] Figure 5 It shows Figure 4 A cross-sectional view of the heat exchanger along line AA;

[0029] Figure 6 It shows Figure 4 A BB-direction sectional view of the heat exchanger;

[0030] Figure 7 It shows Figure 4 DD section view of the heat exchanger;

[0031] Figure 8 It shows Figure 1 A schematic diagram of the structure of the second flow channel plate of the heat exchanger.

[0032] The above figures include the following reference numerals:

[0033] 1. First flow channel plate; 2. Second flow channel plate; 10. Body part; 11. Fluid inlet; 12. Fluid outlet; 13. First flow channel; 14. Flow channel; 15. Second flow channel; 20. Separator; 21. First end; 22. Second end; 23. Groove; 231. First sidewall; 232. Bottom wall; 233. Second sidewall; 234. Arc-shaped wall; 24. Space; 25. Recess; 26. First separator; 27. Second separator. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 7As shown, an embodiment of the present invention provides a heat exchanger. The heat exchanger includes a first flow channel plate 1 and a second flow channel plate 2; wherein, the first flow channel plate 1 includes a body portion 10 and a partition portion 20, the second flow channel plate 2 is stacked on the first flow channel plate 1, and a flow channel space is formed between the body portion 10 and the second flow channel plate 2, the body portion 10 is provided with a fluid inlet 11 and a fluid outlet 12 communicating with the flow channel space, the partition portion 20 is located within the flow channel space, and the partition portion 20 is used to divide the flow channel space into a first flow channel 13 extending longitudinally along the partition portion 20 on a first side of the partition portion 20, a second flow channel 15 extending longitudinally along the partition portion 20 on a second side of the partition portion 20, and a passage connecting the first flow channel 13 and the second flow channel 15. The flow channel 14 has a fluid inlet 11 connected to the first flow channel 13 and a fluid outlet 12 connected to the second flow channel 15, forming a flow channel from the fluid inlet 11 through the first flow channel 13, the flow channel 14 and the second flow channel 15, and then to the fluid outlet 12. The second flow channel plate 2 has a recess 25 on the side facing the first flow channel plate 1, and the recess 25 extends longitudinally along the partition 20. A space 24 extending longitudinally along the partition 20 is formed between the partition 20 and the recess 25. The space 24 includes at least one inlet and at least one outlet connected to the flow channel, and the inlet and outlet are spaced apart in the longitudinal extension direction of the partition 20.

[0036] In the above-described technical solution, compared to the fluid entering through the fluid inlet 11 sequentially passing through the first flow channel 13, the through flow channel 14, and the second flow channel 15, bypassing the partition 20 and flowing out through the fluid outlet 12, in this application, by additionally providing the space 24, a portion of the first flow channel 13 can run parallel to the space 24. This increases the cross-sectional area through which the fluid passes, allowing the fluid to be more evenly distributed in the portion of the first flow channel 13 and the space 24. This reduces the flow velocity of the fluid in the portion of the first flow channel 13 and the space 24, thereby reducing flow resistance. In this way, on the one hand, high pressure loss of the fluid can be avoided, thereby reducing compressor power consumption; on the other hand, the fluid can pass through a larger surface area at a lower flow velocity, thereby improving heat transfer efficiency.

[0037] Specifically, in an embodiment of the present invention, the partition 20 is a strip-shaped structure, and the length direction of the strip-shaped structure is the longitudinal extension direction of the partition 20, that is... Figure 2 The left and right directions in the middle, among which, Figure 2 In this context, the L direction is the longitudinal direction.

[0038] In some embodiments, the partition 20 may be located on the upper or lower side of the body portion 10.

[0039] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, in an embodiment of the present invention, the partition 20 has a first end 21 near the flow channel 14 and a second end 22 away from the flow channel 14. The second end 22 of the partition 20 is connected to the inner wall of the flow channel space. The partition 20 is provided with a groove 23 as the inlet of the space 24. There is a gap space between the first end 21 of the partition 20 and the inner wall of the recess 25, and the gap space serves as the outlet of the space 24.

[0040] With the above configuration, some of the fluid in the first flow channel 13 can flow through the groove 23 into the space 24 and flow along the longitudinal extension direction of the space 24, then flow out from the outlet, and then flow into the flow channel 14 from the first end 21, thereby reducing the flow resistance of the fluid passing through the first flow channel 13.

[0041] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, in an embodiment of the present invention, the groove 23 extends from the first side of the partition portion 20 toward the first flow channel 13 to the side of the partition portion 20 toward the recess 25.

[0042] With the above configuration, some of the fluid in the first flow channel 13 can flow through the groove 23 to the side of the partition 20 facing the recess 25 and flow along the partition 20 to the first end 21, and then flow into the flow channel 14 from the first end 21, thereby reducing the flow resistance of the fluid through the first flow channel 13.

[0043] Furthermore, by providing the groove 23, an additional flow channel parallel to the first flow channel 13 can be added without increasing the volume of the main body 10, thereby making the structure of the heat exchanger more compact.

[0044] Preferably, in an embodiment of the present invention, the flow channel 14 is located on the side of the first end 21 opposite to the second end 22, so that the outlet of the space 24 is connected to the flow channel 14.

[0045] Preferably, in an embodiment of the present invention, the groove 23 is formed on the partition portion 20 by stamping to facilitate processing.

[0046] In one embodiment, the groove 23 can also be formed by injection molding.

[0047] In one embodiment, the location of the first end 21 is sealed or serves as the outlet of the space 24, and then an additional recessed groove is provided. This recessed groove extends from the second side of the partition 20 toward the second flow channel 15 to the top side of the partition 20 away from the body 10, and the recessed groove is located between the first end 21 and the groove 23. In this way, the recessed groove can serve as the outlet of the space 24, so that part of the fluid in the first flow channel 13 can flow through the groove 23 to the top side of the partition 20 and flow along the top side of the partition 20 to the recessed groove, and then flow into the second flow channel 15 through the recessed groove.

[0048] In one embodiment, the partition 20 includes two spaced-apart grooves 23 extending longitudinally. One groove 23 serves as the inlet of the space 24, and the other groove 23 serves as the outlet of the space 24. This allows the inlet and outlet of the space 24 to be spaced apart, enabling fluid to flow within the sealed cavity formed between the partition 20 and the recess 25 along the longitudinal direction of the partition 20. This increases the cross-sectional area through which the fluid passes, allowing for a more uniform distribution of the fluid in a portion of the first flow channel 13 and the space 24, thereby reducing the flow velocity in the first flow channel 13 and the space 24 and consequently reducing flow resistance. Specifically, the groove 23 serving as the inlet of the space 24 extends from a first side of the partition 20 to the side of the partition 20 facing the recess 25; the groove 23 serving as the outlet of the space 24 extends from a second side of the partition 20 to the side of the partition 20 facing the recess 25. In this way, the inlet and outlet of space 24 can be located on the first and second sides of partition 20, respectively. Fluid can flow in the sealed cavity formed between partition 20 and recess 25 and along the longitudinal extension direction of partition 20, thereby increasing the cross-sectional area through which fluid passes. This allows the fluid to be more evenly distributed in part of the first flow channel 13 and space 24, thereby reducing the flow velocity of the fluid in part of the first flow channel 13 and space 24, and thus reducing flow resistance.

[0049] In one embodiment, the partition 20 includes two spaced-apart grooves 23 extending longitudinally. One groove 23 serves as the inlet of the space 24, and the other groove 23 serves as the outlet of the space 24. The groove 23 serving as the inlet of the space 24 extends from the first side of the partition 20 to the side of the partition 20 facing the recess 25. The groove 23 serving as the outlet of the space 24 extends from the first side of the partition 20 to the side of the partition 20 facing the recess 25. In this way, the inlet and outlet of the space 24 can be located on the same side of the partition 20. Fluid can flow in the sealed cavity formed between the partition 20 and the recess 25 along the longitudinal extension direction of the partition 20, thereby increasing the cross-sectional area through which the fluid passes. This allows the fluid to be more evenly distributed in part of the first flow channel 13 and the space 24, thereby reducing the flow velocity of the fluid in part of the first flow channel 13 and the space 24, and thus reducing flow resistance.

[0050] like Figure 3 As shown in the embodiment of the present invention, when viewed in cross-section of the groove 23, at least part of the inner wall of the groove 23 is arc-shaped.

[0051] By setting it up as described above, turbulence of the fluid at the groove 23 can be reduced, thereby reducing flow resistance. This can, on the one hand, prevent high pressure loss of the fluid, thereby reducing compressor power consumption; on the other hand, the fluid can pass through a larger surface area at a lower flow rate, thereby improving heat transfer efficiency.

[0052] In some embodiments, the cross-section of the groove 23 is perpendicular to the fluid flow direction at the groove 23.

[0053] like Figure 3 As shown, in an embodiment of the present invention, the inner wall of the groove 23 includes a first side wall 231, a bottom wall 232, a second side wall 233, and at least one arcuate wall 234. The first side wall 231 and / or the second side wall 233 are connected to the bottom wall 232 through the arcuate wall 234.

[0054] With the above configuration, the arc-shaped wall 234 can reduce the turbulence of the fluid in the groove 23, thereby reducing the flow resistance.

[0055] Preferably, in an embodiment of the present invention, along the longitudinal direction of the partition 20, the first sidewall 231 and the second sidewall 233 are located on both sides of the bottom wall 232, the first sidewall 231 and the bottom wall 232 are connected by an arc-shaped wall 234, and the second sidewall 233 and the bottom wall 232 are connected by an arc-shaped wall 234.

[0056] Preferably, in an embodiment of the present invention, the end of the first sidewall 231 away from the bottom wall 232 is provided with an arc-shaped wall, and the end of the second sidewall 233 away from the bottom wall 232 is also provided with an arc-shaped wall. In this way, the arc-shaped wall 234 can reduce the turbulence of the fluid in the space 24, thereby reducing the flow resistance.

[0057] In one embodiment, when viewed in cross-section, the entire inner wall of the groove 23 is arc-shaped, for example, semi-circular.

[0058] Specifically, in an embodiment of the present invention, the arc-shaped wall 234 is arc-shaped, with a radius greater than or equal to 0.1 mm and less than or equal to 0.3 mm. This more effectively reduces fluid turbulence within the groove 23, thereby more effectively reducing flow resistance.

[0059] Preferably, in an embodiment of the present invention, the radius of the arc is equal to 0.1 mm.

[0060] like Figure 2 As shown, in an embodiment of the present invention, the groove 23 is located between the middle position C of the partition 20 and the second end 22, and the distance between the middle position C and the first end 21 is equal to the distance between the middle position C and the second end 22.

[0061] In the above technical solution, some fluid can flow out from the fluid outlet 12 after passing through the first flow channel 13, space 24, flow passage 14, and second flow channel 15. By setting the groove 23 between the middle position C of the partition 20 and the second end 22, the flow path of the above-mentioned fluid on the top side of the partition 20 can be increased, so that the above-mentioned fluid can contact the body part 10 more fully before flowing out from the fluid outlet 12, thereby increasing the heat exchange time and improving the heat transfer efficiency.

[0062] Preferably, such as Figure 2 As shown, in an embodiment of the present invention, there is one groove 23. In this way, while ensuring reduced flow resistance, the problem of excessive fluid having too short a residence time in the flow channel space can be avoided, thereby improving heat transfer efficiency.

[0063] In one embodiment, there may be multiple grooves 23, which are arranged sequentially along the longitudinal direction of the partition 20.

[0064] like Figure 2 As shown, in an embodiment of the present invention, the partition 20 includes a first partition 26 and a second partition 27 connected to each other. The first partition 26 is spaced apart from the inner wall of the first end of the flow channel space to form a flow channel 14. The second partition 27 is connected to the inner wall of the second end of the flow channel space and is sealed to the second flow channel plate 2. The fluid inlet 11 and the fluid outlet 12 are located on both sides of the second partition 27, respectively.

[0065] With the above arrangement, the fluid inlet 11 and the fluid outlet 12 can be separated on both sides of the second separator 27, and the fluid inlet 11 and the fluid outlet 12 are not connected, so that the fluid can flow into the first flow channel 13 through the fluid inlet 11, and flow out of the fluid outlet 12 in sequence through the first flow channel 13, the flow passage 14 and the second flow channel 15.

[0066] like Figure 8 As shown, in an embodiment of the present invention, the recess 25 extends to the inner wall of the first end of the flow channel space, the first partition 26 is embedded in the recess 25, the top wall of the first partition 26 is spaced apart from the bottom wall of the recess 25, and the wall surface of the first side of the first partition 26 and the wall surface of the second side of the first partition 26 are sealed to the recess 25.

[0067] With the above configuration, a space 24 can be formed between the top wall of the first partition 26 and the bottom wall of the recess 25, and the gap between the end of the first partition 26 away from the second partition 27 and the bottom wall of the recess 25 can form the outlet of the space 24, so that the space 24 can communicate with the flow channel 14, thereby increasing the cross-sectional area through which the fluid passes, thereby reducing the flow velocity of the fluid in part of the first flow channel 13 and the space 24, and thus reducing the flow resistance.

[0068] like Figure 2 and Figure 6 As shown, in an embodiment of the present invention, a portion of the first flow channel plate is recessed in the direction of the flow channel space to form a partition 20 located within the flow channel space. Thus, the top of the partition 20 of one first flow channel plate can form a space 24 extending longitudinally along the partition 20 between the top of the corresponding partition 20 of the adjacent first flow channel plate 1 above it, and the partitions 20 of the two first flow channel plates 1 can fit together to form a sealed flow channel, allowing fluid to flow longitudinally along the partition 20.

[0069] Specifically, such as Figure 6 As shown, in an embodiment of the present invention, the first ends 21 of two adjacent partitions 20 have a gap so that the location of the first ends 21 forms the outlet of the space 24.

[0070] like Figure 2 As shown in the embodiment of the present invention, the first flow channel 13, the flow passage 14, and the second flow channel 15 are arranged in a U-shape. This allows the fluid to flow along the U-shaped path, thereby enabling the fluid to have sufficient contact time with the body part 10 to improve the heat exchange effect.

[0071] Specifically, in an embodiment of the present invention, the longitudinal direction of the partition 20 is perpendicular to the extension direction of the flow channel 14.

[0072] like Figure 2As shown in the embodiment of the present invention, a plurality of protrusions are provided on the side where the flow channel space of the main body 10 is located, and the plurality of protrusions are spaced apart, which helps to dissipate heat and turbulence.

[0073] like Figures 4 to 8 As shown, in an embodiment of the present invention, the first flow channel plate 1 and / or the second flow channel plate 2 are formed by stamping sheet metal. In this way, at least one of the recess 25 and the partition 20 can have a certain width to divide the flow channel space into a first flow channel 13, a flow passage 14, and a second flow channel 15.

[0074] like Figure 1 As shown, in an embodiment of the present invention, there are multiple first flow channel plates 1 and multiple second flow channel plates 2, and the first flow channel plates 1 and the second flow channel plates 2 are alternately arranged along the thickness direction of the first flow channel plate 1. Specifically, the bottom of the second flow channel plate 2 is within the flow channel space of the first flow channel plate 1, so that the second flow channel plate 2 and the first flow channel plate 1 can form a closed space to prevent the fluid in the first flow channel 13, the through flow channel 14, the second flow channel 15 and the space 24 from leaking out from the opening of the flow channel space. A coolant flow chamber is formed between the first flow channel plate 1 and the second flow channel plate 2 above it, and a cooling water flow chamber is formed between the second flow channel plate 2 and the first flow channel plate 1 above it.

[0075] In some embodiments, the first flow channel plate 1 may be located above or below the second flow channel plate 2.

[0076] Specifically, in embodiments of the present invention, the heat exchanger further includes a top plate and a bottom plate, with a plurality of first flow channel plates 1 and a plurality of second flow channel plates 2 located between the top plate and the bottom plate.

[0077] like Figure 2 As shown, an embodiment of the present invention provides a flow channel plate, including: a body portion 10 having a receiving groove and a fluid inlet 11 and a fluid outlet 12 communicating with the receiving groove; a partition portion 20 is provided in the receiving groove, the partition portion 20 being used to divide the receiving groove into a first flow channel 13 extending longitudinally along the partition portion 20 on a first side of the partition portion 20, a second flow channel 15 extending longitudinally along the partition portion 20 on a second side of the partition portion 20, and a flow passage 14 communicating with the first flow channel 13 and the second flow channel 15; the fluid inlet 11 communicating with the first flow channel 13, and the fluid outlet 12 communicating with the second flow channel 15; the partition portion 20 having a groove 23 extending from the first side of the partition portion 20 toward the first flow channel 13 to the top side of the partition portion 20.

[0078] With the above configuration, compared to the fluid entering through the fluid inlet 11 sequentially passing through the first flow channel 13, the through flow channel 14, and the second flow channel 15, bypassing the partition 20 and flowing out through the fluid outlet 12, in this application, by additionally providing the space 24, after the first flow channel plate and the second flow channel plate cooperate, a portion of the first flow channel 13 can run parallel to the space 24, thereby increasing the cross-sectional area through which the fluid passes. This allows the fluid to be more evenly distributed in the portion of the first flow channel 13 and the space 24, thereby reducing the flow velocity of the fluid in the portion of the first flow channel 13 and the space 24, and thus reducing the flow resistance. In this way, on the one hand, high pressure loss of the fluid can be avoided, thereby reducing the power consumption of the compressor; on the other hand, the fluid can pass through a larger surface area at a lower flow velocity, thereby improving the heat transfer efficiency.

[0079] The flow channel plate in the embodiment of the present invention is the first flow channel plate described above.

[0080] The heat exchanger described above has all the advantages of the first flow channel plate 1 mentioned above, which will not be repeated here.

[0081] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: Compared with the fluid entering through the fluid inlet sequentially passing through the first flow channel, the through flow channel, and the second flow channel, bypassing the partition and flowing out through the fluid outlet, in this application, by providing additional space, a portion of the first flow channel can run parallel to the space, thereby increasing the cross-sectional area through which the fluid passes. This allows the fluid to be more evenly distributed in the portion of the first flow channel and the space, thereby reducing the flow velocity of the fluid in the portion of the first flow channel and the space, and thus reducing flow resistance. In this way, on the one hand, high pressure loss of the fluid can be avoided, thereby reducing the power consumption of the compressor; on the other hand, the fluid can pass through a larger surface area at a lower flow velocity, thereby improving heat transfer efficiency.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat exchanger, characterized in that, Includes a first flow channel plate (1) and a second flow channel plate (2); wherein, The first flow channel plate (1) includes a body portion (10) and a partition portion (20). The second flow channel plate (2) is stacked on the first flow channel plate (1). The body portion (10) and the second flow channel plate (2) form a flow channel space. The body portion (10) is provided with a fluid inlet (11) and a fluid outlet (12) communicating with the flow channel space. The partition portion (20) is located within the flow channel space and is used to divide the flow channel space into a first flow channel located on the first side of the partition portion (20) and extending longitudinally along the partition portion (20). 13) A second flow channel (15) extending longitudinally along the partition (20) on the second side of the partition (20) and a flow passage (14) connecting the first flow channel (13) and the second flow channel (15), wherein the fluid inlet (11) is connected to the first flow channel (13) and the fluid outlet (12) is connected to the second flow channel (15) to form a flow channel that enters from the fluid inlet (11) and passes sequentially through the first flow channel (13), the flow passage (14) and the second flow channel (15) to the fluid outlet (12); The second flow channel plate (2) has a recess (25) on the side facing the first flow channel plate (1), and the recess (25) extends longitudinally along the partition (20); a space (24) extending longitudinally along the partition (20) is formed between the partition (20) and the recess (25), the space (24) includes at least one inlet and at least one outlet communicating with the flow channel, the inlet and outlet being spaced apart in the longitudinal extension direction of the partition (20).

2. The heat exchanger according to claim 1, characterized in that, The partition (20) has a first end (21) near the flow channel (14) and a second end (22) away from the flow channel (14), and the second end (22) of the partition (20) is connected to the inner wall of the flow channel space; The partition (20) has a groove (23) as the inlet of the space (24), and there is a gap between the first end (21) of the partition (20) and the inner wall of the recess (25), which serves as the outlet of the space (24).

3. The heat exchanger according to claim 2, characterized in that, The groove (23) extends from the first side of the partition (20) to the side of the partition (20) facing the recess (25).

4. The heat exchanger according to claim 1, characterized in that, Along the longitudinal extension direction of the partition (20), the partition (20) includes two grooves (23) spaced apart, one of the two grooves (23) serving as the inlet of the space (24); The other groove (23) of the two grooves (23) serves as the outlet of the space (24).

5. The heat exchanger according to claim 4, characterized in that, The groove (23), which serves as the inlet of the space (24), extends from the first side of the partition (20) to the side of the partition (20) facing the recess (25); The groove (23), which serves as the outlet of the space (24), extends from the second side of the partition (20) to the side of the partition (20) facing the recess (25); or, The groove (23), which serves as the outlet of the space (24), extends from the first side of the partition (20) to the side of the partition (20) facing the recess (25).

6. The heat exchanger according to any one of claims 2 to 5, characterized in that, When viewed in cross-section of the groove (23), at least part of the inner wall of the groove (23) is arc-shaped.

7. The heat exchanger according to claim 6, characterized in that, The inner wall of the groove (23) includes a first side wall (231), a bottom wall (232), a second side wall (233), and at least one arcuate wall (234), wherein the first side wall (231) and / or the second side wall (233) are connected to the bottom wall (232) through the arcuate wall (234).

8. The heat exchanger according to claim 7, characterized in that, The arc-shaped wall (234) is arc-shaped, with a radius greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

9. The heat exchanger according to claim 2, characterized in that, The groove (23) is located between the middle position (C) of the partition (20) and the second end (22), and the distance between the middle position (C) and the first end (21) is equal to the distance between the middle position (C) and the second end (22).

10. The heat exchanger according to claim 2, characterized in that, There are one or more grooves (23), and the multiple grooves (23) are arranged sequentially along the longitudinal direction of the partition (20).

11. The heat exchanger according to any one of claims 1 to 5, characterized in that, The partition (20) includes a first partition (26) and a second partition (27) connected to each other. The first partition (26) is spaced apart from the inner wall of the first end of the flow channel space to form the flow channel (14). The second partition (27) is connected to the inner wall of the second end of the flow channel space. The second partition (27) is sealed to the second flow channel plate (2). The fluid inlet (11) and the fluid outlet (12) are located on both sides of the second partition (27).

12. The heat exchanger according to claim 11, characterized in that, The recess (25) extends to the inner wall of the first end of the flow channel space, the first partition (26) is embedded in the recess (25), the top wall of the first partition (26) is spaced apart from the bottom wall of the recess (25), and the first side wall surface of the first partition (26) and the second side wall surface of the first partition (26) are both sealed to the recess (25).

13. The heat exchanger according to any one of claims 1 to 5, characterized in that, Part of the first flow channel plate (1) is recessed in the direction of the flow channel space to form the partition (20) located in the flow channel space.

14. The heat exchanger according to any one of claims 1 to 5, characterized in that, The first flow channel (13), the flow passage (14), and the second flow channel (15) are arranged in a U-shape.

15. The heat exchanger according to any one of claims 1 to 5, characterized in that, The first flow channel plate (1) and / or the second flow channel plate (2) are formed by sheet metal stamping.

16. The heat exchanger according to any one of claims 1 to 5, characterized in that, There are multiple first flow channel plates (1) and multiple second flow channel plates (2). The first flow channel plates (1) and the second flow channel plates (2) are alternately arranged along the thickness direction of the first flow channel plate (1).

17. A flow channel plate, characterized in that, include: The main body (10) has a receiving groove and a fluid inlet (11) and a fluid outlet (12) communicating with the receiving groove. The receiving groove is provided with a partition (20). The partition (20) is used to divide the receiving groove into a first flow channel (13) extending longitudinally along the partition (20) on a first side of the partition (20), a second flow channel (15) extending longitudinally along the partition (20) on a second side of the partition (20), and a flow passage (14) connecting the first flow channel (13) and the second flow channel (15). The fluid inlet (11) is connected to the first flow channel (13), and the fluid outlet (12) is connected to the second flow channel (15). A partition (20) is provided with a groove (23) extending from the first side of the partition (20) toward the first flow channel (13) to the top side of the partition (20).

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