Heat exchanger processing device, processing method and heat exchanger

Abstract

The present application discloses a processing device and a processing method of a heat exchanger, and a heat exchanger, comprising a first mold core and a second mold core, the first mold core comprising a first base surface and a plurality of first convex portions, at least a first concave portion is provided between some adjacent first convex portions, the second mold core comprising a second base surface and a plurality of second concave portions, at least a second convex portion is provided between some adjacent second concave portions, the first convex portion is arranged correspondingly to the second concave portion, the second convex portion is arranged correspondingly to the first concave portion, the height of the first convex portion relative to the first base surface is H10, the height of the second convex portion relative to the second base surface is H20, the depth of the first concave portion relative to the first base surface is H30, the depth of the second concave portion relative to the second base surface is H40, H10>H20, and H10-H40>H20-H30, so that the first concave and the second concave formed by the processing on both sides of the heat exchange plate have different depths, thereby adapting to different media on both sides of the heat exchange plate, and improving the heat exchange performance of the heat exchanger.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger, a heat exchanger processing device and a heat exchanger processing method. Background Art

[0002] The heat exchanger in the related technology includes a heat exchange plate, which has a protrusion to increase the contact area between the heat exchange plate and the heat exchange fluid and to disturb the heat exchange fluid to improve the heat exchange performance. For compact plate heat exchangers, especially for application scenarios such as high-efficiency refrigeration equipment in vehicles, the flow channel size of the heat exchanger is significantly reduced, from the traditional 3-5mm equivalent flow diameter to less than 3mm, or even less than 2mm. In such a scenario, higher requirements are placed on the manufacturing accuracy of the heat exchange plate, especially the plate mold and stamping technology, brazing technology, etc., which have significantly higher technical difficulty compared with related applications in traditional industries. Heat exchange plates are usually manufactured using full-contour mold manufacturing technology, that is, the mold is completely contoured according to the structure of the heat exchange plate. During the processing, due to material thinning of the heat exchange plate, the shape of the mold core usually cannot fully contact the surface of the heat exchange plate, resulting in a difference between the structure of the final heat exchange plate and the structure of the heat exchange plate to be formed. The unstable flow channel structure between adjacent heat exchange plates affects the heat exchange performance of the heat exchanger and is prone to cause cold welding of the flow channel welds, affecting the structural reliability of the heat exchanger. How to convert the material thinning of the heat exchange plate into an improvement in the heat exchange performance of the heat exchanger is an urgent problem to be solved. Summary of the invention

[0003] The purpose of the present application is to provide a processing device, a processing method and a heat exchanger for a heat exchanger. By adjusting the processing device of the heat exchanger, the distribution of the material thinning area of ​​the heat exchange plate can be effectively controlled to improve the heat exchange performance of the heat exchanger.

[0004] One aspect of an embodiment of the present application provides a processing device for a heat exchanger, including a first mold core and a second mold core, the first mold core including a first base surface, the first mold core having a plurality of first convex portions protruding relative to the first base surface, and a first concave portion being provided between at least some adjacent first convex portions, the second mold core including a second base surface, the second mold core having a plurality of second concave portions recessed relative to the second base surface, and a second convex portion being provided between at least some adjacent second concave portions, the first convex portions being arranged correspondingly to the second concave portions, the second convex portions being arranged correspondingly to the first concave portions, the height of the first convex portion relative to the first base surface being defined as H10, the depth of the first concave portion relative to the first base surface being defined as H30, the height of the second convex portion relative to the second base surface being defined as H20, and the depth of the second concave portion relative to the second base surface being defined as H40, wherein H10>H20, and H10-H40>H20-H30.

[0005] An embodiment of the present application provides a processing device for a heat exchanger. Since the height H10 of the first convex portion relative to the first base surface is greater than the height H20 of the second convex portion relative to the second base surface, the first groove and the second groove on both sides of the heat exchange plate formed by processing have different depths, thereby adapting to different media on both sides of the heat exchange plate and improving the heat exchange performance of the heat exchanger. Moreover, the thickness reduction of the heat exchange plate located at the first convex portion is greater than the thickness reduction of the heat exchange plate located at the second convex portion. The height H10 of the first convex portion relative to the first base surface, the height H20 of the second convex portion relative to the second base surface, the depth H30 of the first concave portion relative to the first base surface, and the depth H40 of the second concave portion relative to the second base surface satisfy H10-H40>H20-H30. When the first mold core and the second mold core are cooperatively arranged, the distance between the first convex portion and the second concave portion is smaller than the distance between the second convex portion and the first concave portion, thereby reducing the difference between the finally formed heat exchange plate and the heat exchange plate to be formed, thereby meeting the heat exchange requirements of the heat exchanger.

[0006] Another aspect of the embodiment of the present application provides a method for processing a heat exchanger, which can process heat exchange plates of the heat exchanger according to the above-mentioned heat exchanger processing device, and the processing method includes:

[0007] a. placing a plate between the first mold core and the second mold core, the plate having a first side surface and a second side surface, the first side surface facing the first mold core, and the second side surface facing the second mold core;

[0008] b. Move the first mold core and / or the second mold core to close the mold with the second mold core. During the closing process, the first convex portion pushes a part of the plate toward the second concave portion to form a first groove of the heat exchange plate, and a first convex portion is formed on the back side of the first groove. The second convex portion pushes a part of the plate toward the first concave portion to form a second groove of the heat exchange plate, and a second convex portion is formed on the back side of the second groove. The distance between the second convex portion and the first concave portion is greater than the distance between the first convex portion and the second concave portion.

[0009] The processing method of the heat exchanger provided in the embodiment of the present application moves the first mold core and / or the second mold core to process the plate located between the first mold core and the second mold core, and acts on the corresponding area of ​​the plate through the first protrusion of the first mold core and the second protrusion of the second mold core. Since the first protrusion has a larger height, during the processing, the thickness of the top of the first protrusion formed by the plate processing is thinner than the thickness of the top of the second protrusion, and the depth of the first groove located on the back of the first protrusion is greater than the depth of the second groove located on the back of the second protrusion, so that the material thinning amount at the top of the first protrusion during the forming process of the heat exchange plate is compensated by the height of the first protrusion of the first mold core, thereby reducing the difference between the finally formed heat exchange plate and the heat exchange plate to be formed, and the first groove and the second groove on both sides of the processed heat exchange plate have different depths, thereby adapting to different media on both sides of the heat exchange plate, thereby improving the heat exchange performance of the heat exchanger.

[0010] Another aspect of an embodiment of the present application provides a heat exchanger, comprising a plurality of heat exchange plates, wherein the heat exchange plates include a first protrusion and a second protrusion, the back side of the first protrusion has a first groove, the back side of the second protrusion has a second groove, the protruding directions of the first protrusion and the second protrusion are opposite, and the first protrusion and the second protrusion are formed by the processing device of the above-mentioned heat exchanger.

[0011] In the heat exchanger provided in the embodiment of the present application, the thickness of the top of the first protrusion is less than the thickness of the top of the second protrusion, and the depth of the first groove located on the back side of the first protrusion is greater than the depth of the second groove located on the back side of the second protrusion, thereby effectively controlling the distribution of the material thinning area of ​​the heat exchange plate, so that the first groove and the second groove on both sides of the heat exchange plate have different depths, thereby adapting to different media on both sides of the heat exchange plate and improving the heat exchange performance of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the heat exchanger of the present application;

[0013] Figure 2 It is a structural schematic diagram of a fluid channel of the heat exchanger of the present application;

[0014] Figure 3 It is a structural schematic diagram of another fluid channel of the heat exchanger of the present application;

[0015] Figure 4 It is a structural schematic diagram of another fluid channel of the heat exchanger of the present application;

[0016] Figure 5 It is a structural schematic diagram of another fluid channel of the heat exchanger of the present application;

[0017] Figure 6 yes Figure 5A schematic diagram of a local enlarged structure;

[0018] Figure 7 It is a distribution reference diagram of the heat exchange area and the corner hole area of ​​the heat exchange plate of the heat exchanger of the present application;

[0019] Figure 8 It is a structural schematic diagram of a heat exchange plate of the heat exchanger of the present application;

[0020] Fig. 9 yes Figure 8 A schematic diagram of a partial cross-sectional structure of the middle heat exchange plate along the AA direction;

[0021] Fig.10 It is an enlarged structural comparison diagram of the first protrusion and the eighth protrusion of the heat exchanger of the present application;

[0022] Fig.11 It is another structural schematic diagram of the heat exchange plate of the heat exchanger of the present application;

[0023] Fig.12 yes Fig.11 A schematic diagram of the enlarged structure at A in the middle;

[0024] Fig.13 yes Fig.11 A schematic diagram of a partial cross-sectional structure of the middle heat exchange plate along the BB direction;

[0025] Fig.14 It is a partial cross-sectional structural schematic diagram of another structure of the heat exchange plate of the present application;

[0026] Fig.15 This is another enlarged structural comparison diagram of the first protrusion and the eighth protrusion of the heat exchanger of the present application.

[0027] Fig.16 A schematic diagram of the three-dimensional structure of the first mold core in the processing device of the present application;

[0028] Fig.17 yes Fig.16 A schematic diagram of the enlarged structure at B in the middle;

[0029] Fig.18 It is a schematic diagram of the structure of the second mold core in the processing device of the present application;

[0030] Fig.19 yes Fig.18 Schematic diagram of the enlarged structure at C in the middle;

[0031] Fig. 20 It is another three-dimensional structural schematic diagram of the first mold core in the processing device of the present application;

[0032] Fig.21 yes Fig. 20 Schematic diagram of the enlarged structure at D in the middle;

[0033] Fig. 22 yes Fig. 20 Schematic diagram of the enlarged structure at E in the middle;

[0034] Fig.23 It is a distribution reference diagram of the heat exchange area and the corner hole area of ​​the first mold core in the processing device of the present application;

[0035] Fig.24 This is a schematic diagram of the processing structure of the heat exchange plate before improvement;

[0036] Fig.25 It is a schematic diagram of a processing structure of an improved heat exchange plate;

[0037] Fig.26 It is another schematic diagram of the processing structure of the improved heat exchange plate;

[0038] Fig. 27 It is another schematic diagram of the processing structure of the improved heat exchange plate;

[0039] Fig.28 It is another schematic diagram of the processing structure of the improved heat exchange plate. DETAILED DESCRIPTION

[0040] See also Figure 1-15 The embodiment of the present application provides a heat exchanger 1, comprising a plurality of heat exchange plates 10, wherein fluid channels are arranged between adjacent heat exchange plates 10, and other components such as fins may be arranged in the fluid channels. The heat exchanger 1 is also provided with a pipe 40 communicating with the fluid channels, such as Figure 2-Figure 6 As shown, the heat exchange plate 10 includes a first plate 11, a second plate 12 and a third plate 13, a first heat exchange channel 20 is provided between the first plate 11 and the second plate 12, and a second heat exchange channel 30 is provided between the second plate 12 and the third plate 13, wherein the first heat exchange channel 20 and the second heat exchange channel 30 are not connected, and the first heat exchange channel 20 and the second heat exchange channel 30 are provided for different media to circulate, specifically, the first heat exchange channel 20 is provided for refrigerant to circulate, and the second heat exchange channel 30 is provided for heat exchange fluid to circulate, since the first heat exchange channel 20 and the second heat exchange channel 30 are located on both sides of the second plate 12, the refrigerant in the first heat exchange channel 20 and the heat exchange fluid in the second heat exchange channel 30 can achieve heat exchange through the second plate 12; wherein the heat exchange fluid is mainly a coolant, specifically cooling water or cooling oil.

[0041] In order to increase the heat exchange effect of the heat exchanger, the second plate 12 usually has protrusions or grooves to increase the contact area or turbulence effect between the second plate 12 and the refrigerant or heat exchange fluid, such as Figure 2-Figure 4As shown, the second plate 12 has a first protrusion 121 protruding toward the first plate 11 and a second protrusion 123 protruding toward the third plate 13, that is, the first protrusion 121 and the second protrusion 123 are located on both sides of the second plate, and the thickness of the top of the first protrusion 121 is defined as h1, and the thickness of the top of the second protrusion 123 is defined as h2, wherein h1 is less than h2. Since during the processing of the heat exchange plate 10, the shape variable of the protrusion area corresponding to the heat exchange plate 10 is large, there is usually a phenomenon of material thinning, and the thickness of the top of the first protrusion 121 is controlled to be smaller than the thickness of the top of the second protrusion 123, and the material thinning area of ​​the heat exchange plate 10 is distributed on the top of the first protrusion 121, so that the space of the material thinning of the heat exchange plate 10 is used as a part of the second heat exchange channel 30 to increase the flow area of ​​the second heat exchange channel 30, and the thickness of the top of the second protrusion 123 is compared with the thickness of the first protrusion 121. The thickness of the top of 121 is relatively large, and the flow area of ​​the first heat exchange channel 20 is smaller than that of the second heat exchange channel 30. Since the first heat exchange channel 20 is for the circulation of refrigerant and the second heat exchange channel 30 is for the circulation of heat exchange fluid, the second heat exchange channel 30 with a larger flow area can reduce the pressure drop of the heat exchange fluid, so that the heat exchange fluid after heat exchange with the refrigerant in the first heat exchange channel 20 can flow through the second heat exchange channel 30 faster, thereby improving the heat exchange effect between the heat exchange fluid and the refrigerant, and further improving the heat exchange performance of the heat exchanger 1. In addition, the flow area on the refrigerant side is smaller than that on the heat exchange fluid side, the first heat exchange channel 20 is more compact, and the thickness of the top of the second protrusion 123 is relatively thick, which improves the pressure bearing capacity of the first heat exchange channel 20.

[0042] like Figure 5 , Figure 6As shown, the first plate 11 also has a third protrusion 111 protruding toward the second plate 12, and the third protrusion 111 is arranged opposite to the first protrusion 121, and the thickness of the top of the third protrusion 111 is defined as h3, wherein h3 is less than h2, thereby increasing the flow area of ​​the second heat exchange channel 30 on the other side of the first plate 11, and the first plate 11 and the second plate 12 can be symmetrical structures, that is, after the first plate 11 is flipped 180 degrees, its protrusion structure is the same as the protrusion structure of the second plate 12, and at this time, the first protrusion The thickness of the top of 121 can be the same as the thickness of the top of the third protrusion 111, which simplifies the manufacture of the heat exchange plate 10. Of course, the first plate 11 and the second plate 12 may not be symmetrical structures. As long as the material thinning area of ​​the first plate 11 is distributed on the top of the third protrusion 111, the material thinning during the processing of the heat exchange plate 10 can also be converted into increasing the flow area of ​​the second heat exchange channel 30 on the other side of the first plate 11, thereby reducing the pressure drop of the second heat exchange channel 30 and improving the heat exchange performance of the heat exchanger 1. The third plate 13 has a fourth protrusion 131 protruding toward the second plate 12. The fourth protrusion 131 is arranged opposite to the second protrusion 123. The thickness of the top of the fourth protrusion 131 is defined as h4, where h4 is greater than h1. Similarly, the second plate 12 and the third plate 13 may also be symmetrical structures. In this case, the thickness of the top of the second protrusion 123 can be the same as the thickness of the top of the fourth protrusion 131, which simplifies the manufacturing process of the heat exchange plate 10. Figure 5 As shown, the third plate 13 has a sixth protrusion 132 protruding away from the second plate 12, and the thickness of the sixth protrusion 132 is less than the thickness of the fourth protrusion 131, so that the thickness of the protrusion tops of the heat exchange plates located on both sides of the second heat exchange channel 30 is less than the thickness of the protrusion tops of the heat exchange plates located on both sides of the first heat exchange channel 20, thereby further increasing the flow area of ​​the second heat exchange channel 30 relative to the first heat exchange channel 20. It should be pointed out that when the first plate 11 and the third plate 13 have the same structure, the sixth protrusion 131 of the third plate 13 is the third protrusion 111 of the first plate 11.

[0043] like Figure 2 , Figure 3 As shown, the width difference between the first protrusion 121 and the second protrusion 123 of the second plate 12 is small, or the same within the manufacturing process error range, and the flow area of ​​the second heat exchange channel 30 is greater than the flow area of ​​the first heat exchange channel 20 only by controlling the thickness of the top of the first protrusion 121 and the thickness of the top of the second protrusion 123; in some application environments, it is necessary to further increase the flow area of ​​the second heat exchange channel 30 to improve the heat exchange effect of the heat exchanger, such as Figure 4As shown, the width a of the first protrusion 121 is made greater than the width b of the second protrusion 123 , so that the flow area of ​​the second heat exchange channel 30 is further increased compared with the flow area of ​​the first heat exchange channel 20 , thereby achieving different heat exchange requirements. It should be pointed out here that the adjustment of the flow area of ​​the heat exchange channel is mainly achieved by adjusting the shape of the first protrusion 121 and the second protrusion 123, and the thickness relationship between the top of the first protrusion 121 and the top of the second protrusion 123 is mainly achieved by utilizing the material thinning phenomenon existing in the processing of the heat exchange plate 10. By controlling the distribution of the material thinning area, the material thinning of the heat exchange plate 10 is converted into an improvement in the heat exchange performance of the heat exchanger 1. In applications where the flow area of ​​the first heat exchange channel 20 and the second heat exchange channel 30 is large, the effect of improving the heat exchange performance of the heat exchanger 1 by controlling the distribution of the material thinning area is relatively limited. However, for applications where the flow area of ​​the first heat exchange channel 20 and the second heat exchange channel 30 is small, for example, when the second heat exchange channel 20 is used for cooling water to circulate, when the equivalent flow diameter of the second heat exchange channel is reduced to less than 4 mm, the heat exchange performance of the heat exchanger 1 is improved more significantly by controlling the distribution of the material thinning area of ​​the heat exchange plate 10. The equivalent flow diameter here refers to the diameter when the shape of the flow channel is equivalent to a circle.

[0044] In some specific embodiments, in order to further increase the flow area of ​​the second heat exchange channel 30 to improve the heat exchange effect of the heat exchanger 1, the heat exchange plate 10 can adopt an asymmetric convex structure, that is, the convex structures on both sides of the heat exchange plate 10 are different, such as Figure 5 , Figure 6 As shown, the first plate 11 and the second plate 12 are symmetrical structures. Here, the symmetrical structure means that at least part of the cross section of the heat exchange plate along the stacking direction is a symmetrical structure, for example Figure 5 The first plate and the second plate in the heat exchanger 10 may be the first plate 11 turned 180° and its protruding structure is the same as the protruding structure of the second plate 12. In addition, the heat exchange plate 10 generally has a corner hole. The corner holes of the first plate 11 and the second plate 12 may be symmetrical structures or other different structures. Here, the protruding structure of the heat exchange plate is mainly limited, and the corner hole structure is not limited. The structure of the third plate 13 may be the same as that of the first plate 11, that is, the heat exchanger 1 includes the first plate 11 and the second plate 12 alternately arranged. Figure 5The first plate below the second plate is shown as the third plate, the second plate 12 has a first protrusion 121 protruding toward the first plate 11 and a second protrusion 123 protruding toward the third plate 13, the first plate 11 has a third protrusion 111 protruding toward the second plate 12, the third plate 13 has a fourth protrusion 131 protruding toward the second plate 12, and the second plate 12 also has a fifth protrusion 125 protruding toward the third plate 11, the fifth protrusion 125 is located between at least part of the adjacent first protrusions 121, and the fifth protrusion 125 is relative to the first protrusion 121. The height of the top of the first protrusion 121 is less than the height of the second protrusion 123 relative to the top of the first protrusion 121. The third plate 13 has a sixth protrusion 132 protruding away from the second plate 12. The sixth protrusion 132 is arranged corresponding to the first protrusion 121. At least part of the adjacent sixth protrusions 132 also have a seventh protrusion 133 protruding toward the second plate 12. The seventh protrusion 133 is arranged corresponding to the fifth protrusion 125. The height of the seventh protrusion 133 relative to the top of the sixth protrusion 132 is less than the height of the fourth protrusion 131 relative to the top of the sixth protrusion 132. The first protrusion 121 of the second plate 12 is welded and fixed to the third protrusion 111 of the first plate 11, the fourth protrusion 131 of the third plate 13 is welded and fixed to the second protrusion 123 of the second plate 12, and there is a gap between the fifth protrusion 125 of the second plate 12 and the seventh protrusion 133 of the third plate 13. The welding positions of the first protrusion 121 and the third protrusion 111 located in the first heat exchange channel 20 are more dense than the welding positions of the fourth protrusion 131 and the second protrusion 123 located in the second heat exchange channel 30, thereby increasing the first heat exchange channel 2 0's pressure bearing capacity and welding strength, the fifth protrusion 125 and the seventh protrusion 133 do not contact each other to increase the flow area of ​​the second heat exchange channel 30, and the thickness of the top of the fifth protrusion 125 is greater than the thickness of the top of the first protrusion 121, and the thickness of the top of the sixth protrusion 132 is less than the thickness of the top of the seventh protrusion 133. The material thinning area of ​​the heat exchange plate 10 is distributed on one side of the second heat exchange channel 30, which further increases the flow area of ​​the second heat exchange channel 30, reduces the flow resistance of the heat exchange fluid in the second heat exchange channel 30, and improves the heat exchange performance of the heat exchanger 1.

[0045] The present application makes the thickness of the top of the first protrusion 121 smaller than the thickness of the top of the second protrusion 123, and reasonably utilizes the material thinning distribution of the heat exchange plate 10 and the molding characteristics of the heat exchange plate 10, so as to well realize the coordination of the heat exchange channels of the heat exchanger 1 and improve the welding quality and structural reliability of the product. Specifically, the flow area of ​​the first heat exchange channel 20 on the refrigerant side is smaller than the flow area of ​​the second heat exchange channel 30 on the heat exchange fluid side. The first heat exchange channel 20 has a high pressure drop, a compact flow channel, a high refrigerant charge, and good pressure bearing capacity and strength. The flow area of ​​the second heat exchange channel 30 on the heat exchange fluid side is relatively large, the pressure drop is low, and the system pump power consumption is low, thereby increasing the heat transfer coefficient on the refrigerant side. By readjusting the heat transfer coefficients on the refrigerant side and the heat exchange fluid side, the overall heat exchange performance of the heat exchanger 1 under a lower heat exchange fluid pressure drop is further improved.

[0046] like Figure 3 , Figure 6 As shown, a first groove 122 is formed on the back of the first protrusion 121 of the second plate 12, and a second groove 124 is formed on the back of the second protrusion 123 of the second plate 12. The depth of the first groove 122 relative to the top of the second protrusion 123 is defined as H1, and the depth of the second groove 124 relative to the top of the first protrusion 121 is defined as H2, wherein H1 is greater than H2. Since the first groove 122 forms a part of the second heat exchange channel 30, and the second groove 124 forms a part of the first heat exchange channel 20, the depth of the first groove 122 on the back of the first protrusion 121 is controlled to be greater than the depth of the second groove 124 on the back of the second protrusion 123, thereby realizing the second heat exchange channel The flow area of ​​30 is greater than the flow area of ​​the first heat exchange channel 10. In addition, since the thickness of the top of the first protrusion 121 is less than the thickness of the top of the second protrusion 123, the depth of the first groove 122 is greater than the depth of the second groove 124, so that the thickness of the top of the first protrusion 121 is compensated by the depth of the first groove 122, so that the sum of the depth of the first groove 122 and the thickness of the top of the first protrusion 121 and the sum of the depth of the second groove 124 and the thickness of the top of the second protrusion 123 are smaller, so that the flatness of the heat exchange plate 10 is better, the structural differences of the processed heat exchange plates are reduced, the assembly effect of the heat exchange plates 10 is ensured, and the cold welding of the welding points between the heat exchange plates 10 is reduced.

[0047] In some specific embodiments, the thickness h1 of the top of the first protrusion 121, the thickness h2 of the top of the second protrusion 123, the depth H1 of the first groove 122 relative to the top of the second protrusion 123, and the depth H2 of the second groove 124 relative to the top of the first protrusion 121 satisfy: -0.15mm≤(h1+H1)-(h2+H2)≤0.15mm. Since the height difference of the top of each protrusion can be compensated by filling with solder when welding the heat exchange plate 10, such as the height difference of the tops of multiple first protrusions 121 or the height difference of the tops of multiple second protrusions 123, by satisfying the above relationship, the height difference of the first protrusion 121 of the second plate 12 is reduced. 21 and the top of the third protrusion 111 of the first plate 11, and the cold weld between the top of the second protrusion 123 of the second plate 12 and the top of the fourth protrusion 131 of the third plate 13. Of course, the height difference between the tops of the third protrusions 111 of the first plate 11 and the height difference between the tops of the fourth protrusions 131 of the third plate 13 will also affect the welding quality between the tops of the first protrusion 121 and the third protrusion 111 and the welding quality between the second protrusion 123 and the fourth protrusion 131. -0.05mm≤(h1+H1)-(h2+H2)≤0.05mm can further ensure the welding quality between the heat exchange plates 10.

[0048] In some embodiments, Figure 7 , Figure 8 , Fig.11As shown, the heat exchange plate 10 includes a first corner hole area 120, a second corner hole area 130 and a heat exchange area 140. Along the length direction of the heat exchange plate 10, the heat exchange plate 10 includes a first end and a second end. The first corner hole area 120 is close to the first end of the heat exchange plate 10, and the second corner hole area 130 is close to the second end of the heat exchange plate 10. The heat exchange area 140 is located between the first corner hole area 120 and the second corner hole area 130, wherein the first protrusion 121 and the second protrusion 123 are arranged in the heat exchange area 140, and the heat exchange plate 10 has an eighth protrusion 126 located in the first corner hole area 120 and / or the second corner hole area 130, wherein the thickness of the top of the eighth protrusion 126 is greater than the thickness of the top of the first protrusion 121. Since the first protrusion 121 and the second protrusion 123 are located in the heat exchange zone 140, in order to ensure the heat exchange performance of the heat exchange zone 140, a more delicate heat exchange space and protrusion structure are provided through superior material stretching molding design, thereby increasing the heat exchange area of ​​the refrigerant in the first heat exchange channel 20 and the heat exchange fluid in the second heat exchange channel 30. On the other hand, part of the eighth protrusion 126 is located in the first corner hole area 120 and / or the second corner hole area 130, which meets the distribution of the fluid in the first corner hole area 120 and the second corner hole area 130, and ensures the wall thickness of this fluid channel and the strength of the structure after welding. Therefore, the thickness of the top of the first protrusion 131 located in the heat exchange zone 140 is greater than the thickness of the top of the eighth protrusion 126 located in the first corner hole area 120 and / or the second corner hole area 130, which can better achieve the heat exchange performance of the heat exchange zone 140 and the fluid distribution and structural strength of the corner hole area.

[0049] In some specific embodiments, Figure 7 , Figure 8 , Fig.11 As shown, the first corner hole area 120 and the second corner hole area 130 have corner holes, wherein, along the width direction of the heat exchange plate 10, the first corner hole area 120 has a first corner hole 51 and a second corner hole 52, and the second corner hole area 130 has a third corner hole 53 and a fourth corner hole 54, wherein the first corner hole 51 and the third corner hole 53 are located on the same side of the heat exchange plate 10, and the second corner hole 52 and the fourth corner hole 54 are located on the other side of the heat exchange plate 10, and the heat exchange plate 10 has a portion of the eighth protrusion 126 located between the first corner hole 51 and the second corner hole 52, and the heat exchange plate 10 has a portion of the eighth protrusion 126 located between the third corner hole 53 and the fourth corner hole 54, wherein the eighth protrusion 126 can be provided in only one of the corner hole areas, or the eighth protrusion 126 is provided in both corner hole areas.

[0050] In some specific embodiments, Fig. 9 , Fig.10As shown, the protruding direction of the eighth protrusion 126 is the same as that of the first protrusion 121, an eighth groove 127 is formed on the back of the eighth protrusion 126, and a first groove 122 is formed on the back of the first protrusion 121. The depth of the first groove 122 relative to the top of the substrate 110 is defined as H1, the depth of the eighth groove 127 relative to the top of the substrate 110 is defined as Dp1, and the maximum thickness of the heat exchange plate 10 is defined as H. The maximum thickness of the heat exchange plate referred to here refers to the thickness of the substrate of the heat exchange plate, that is, the thickness of the part of the heat exchange plate without protrusions or grooves, which can be the flat part around the corner hole of the heat exchange plate, or the flat part between adjacent protrusions or grooves, wherein Dp1

[0051] In some specific embodiments, Fig.15 As shown, the protruding direction of the eighth protrusion 126 is the same as the protruding direction of the second protrusion 123, and is opposite to the protruding direction of the first protrusion 121. An eighth groove 127 is formed on the back of the eighth protrusion 126, and a second groove 124 is formed on the back of the second protrusion 123. The depth of the second groove 124 relative to the top of the first protrusion 121 is defined as H2, and the depth of the eighth groove 127 is defined as Dp2, wherein Dp2<H2<Dp2+1.5H. Since the thickness of the heat exchange plate 10 directly affects the material thinning degree at the top of the protrusion, the depths of the second groove 124 and the eighth groove 127 are reasonably adjusted according to the thickness of the heat exchange plate 10, thereby reducing the height difference between the top of the second protrusion 123 and the top of the eighth protrusion 126, and improving the flatness of the heat exchange plate 10. Since the depth of the first groove 122 is greater than the depth of the second groove 124, the depth difference between the second groove 124 and the eighth groove 127 is less than the depth difference between the first groove 122 and the eighth groove 127.

[0052] ​In some specific embodiments, the heat exchange plate 10 further has a plurality of protrusions and bosses, and the protrusions and bosses are located in the first corner hole area 120 and / or the second corner hole area 130. Figure 7 As shown, the heat exchange plate 10 has a first protrusion 61 and a first boss portion 62 located in the first corner hole area 120, the first boss portion 62 is arranged around the edge of the second corner hole 52, the second corner hole 52 passes through the top of the first boss portion 62, the first protrusion 61 is located at the outer periphery of the first corner hole 51, and the first protrusion 61 and the first corner hole 51 have a predetermined distance, the heat exchange plate 10 has a second protrusion 63 and a second boss portion 64 located in the second corner hole area 130, the second boss portion 64 is arranged around the edge of the fourth corner hole 54, the fourth corner hole 54 passes through the top of the second boss portion 64, the second protrusion 63 is located at the outer periphery of the third corner hole 53, and the second protrusion 63 and the third corner hole 53 have a predetermined distance. The first and second protrusions and the first and second bosses are mainly provided to ensure the structural reliability of the adjacent heat exchange plates 10 after welding, and to ensure the distance between the adjacent heat exchange plates 10. In addition, the first and second bosses are provided to facilitate the sealing between some corner holes. Of course, the first corner hole 51 and the fourth corner hole 54 can be located on the same side of the heat exchange plate 10, and the second corner hole 52 and the third corner hole 53 can be located on the other side of the heat exchange plate 10, so as to realize the diagonal flow of the heat exchange fluid, that is, the inlet and outlet of the fluid channel are located on different sides of the heat exchange plate 10.

[0053] like Figure 8-Figure 15 As shown, the first protrusion 121 and the second protrusion 123 are both corrugated protrusions, the back of the first protrusion 121 forms a first groove 122, the back of the second protrusion 123 forms a second groove 124, the first groove 122 and the second groove 124 are both corrugated grooves, a plurality of corrugated protrusions are arranged along the length direction of the heat exchange plate 10, a corrugated groove is provided between two adjacent corrugated protrusions, the corrugated protrusions include a plurality of extension sections 1211, two adjacent extension sections 1211 are arranged at an angle, and the extension sections 1211 are arranged obliquely relative to the length direction of the heat exchange plate. Specifically, as Figure 8 , Fig. 9As shown, the first protrusion 121 is a single herringbone wave, which means that the first protrusion 121 includes two extension sections 1211 set at an angle, each extension section 1211 is set obliquely relative to the length direction of the heat exchange plate 10, and the two extension sections 1211 can be symmetrically set along the width direction of the heat exchange plate 10, or can be set asymmetrically, and part of the extension section 1211 can also extend along the length direction of the heat exchange plate 10, and part of the eighth protrusion 126 can be a corrugated protrusion, and part of the eighth protrusion 126 can be a long strip protrusion. It can be understood that the eighth protrusion 126 can also adopt other structures. In addition to being closer to the two ends of the heat exchange plate 10 relative to the first protrusion 121, the first protrusion 121 and the eighth protrusion 126 can also be set on both sides of the width direction of the heat exchange plate 10, or at both ends of the length direction, etc. The distribution of the first protrusion 121 and the eighth protrusion 126 can be adjusted according to the specific application requirements of the heat exchange plate 10.

[0054] In some embodiments, Figure 11-Figure 15 As shown, the first protrusion 121 and the second protrusion 123 are both corrugated protrusions. Specifically, the first protrusion 121 is a multiple herringbone wave. The multiple herringbone wave means that the first protrusion 121 includes a plurality of extension sections 1211 arranged at an angle. Each extension section 1211 is inclined relative to the length direction of the heat exchange plate 10, and the number of the extension sections 1211 is greater than two. Fig.12 , Fig.13 As shown, the second plate 12 also has a fifth protrusion 125 protruding away from the first plate 11, and the fifth protrusion 125 is a corrugated protrusion. The height of the fifth protrusion 125 relative to the top of the first protrusion 121 is less than the height of the second protrusion 123 relative to the top of the first protrusion 121. The fifth protrusion 125 is located between at least part of the adjacent first grooves 122, and the first groove 122 is located between the fifth protrusion 125 and the second protrusion 123. By setting the fifth protrusion 125, the asymmetric structure of the heat exchange plate 10 is realized, that is, adjacent fluid channels have different flow areas, and different turbulence effects of the fluid channels are realized, and the heat exchange performance of the heat exchanger is improved by a more complex protrusion structure.

[0055] like Fig. 9 , Fig.10As shown, the maximum width of the orthographic projection of the first groove 122 on the plane where the substrate 110 is located is λ1, the maximum width of the orthographic projection of the eighth groove 127 on the plane where the substrate 110 is located is λ2, the depth of the first groove 122 is H1, and the depth of the eighth groove 127 is Dp1, wherein λ1 / H1<λ2 / DP1, and H1>DP1. When both the corner hole area and the heat exchange area 140 of the heat exchange plate 10 have protrusions, that is, the heat exchange area 140 of the heat exchange plate 10 has the first protrusion 121, the corner hole area of ​​the heat exchange plate 10 has the eighth protrusion 126, and the first protrusion 121 and the eighth protrusion 126 satisfy λ1 / H1<λ2 / DP1, at this time, the maximum width of the orthographic projection of the first groove 122 on the back of the first protrusion 121 on the plane where the substrate 110 is located is less than the maximum width of the orthographic projection of the eighth groove 127 on the back of the eighth protrusion 126 on the plane where the substrate 110 is located, or the depth of the first groove 122 is greater than the depth of the eighth groove 127, and the deformation of the heat exchange plate 10 in the area where the first protrusion 121 is located is greater than The deformation of the heat exchange plate 10 in the area where the eighth protrusion 126 is located can easily lead to a greater degree of material thinning at the top of the first protrusion 121 than at the top of the eighth protrusion 126, that is, the thickness of the top of the first protrusion 121 is less than the thickness of the top of the eighth protrusion 126, which can easily lead to the top of the first protrusion 121 being lower than the top of the eighth protrusion 126. By increasing the depth H1 of the first groove 122, that is, the depth H1 of the first groove 122 is greater than the depth DP1 of the eighth groove 127, the thinning amount of the top of the first protrusion 121 is compensated by the depth of the first groove 122, and the height difference between the top of the first protrusion 121 and the top of the eighth protrusion 126 is reduced, thereby reducing the cold welding of the heat exchanger 1. In addition, the parameter relationship between the first protrusion 121 and the eighth protrusion 126 enables the heat exchanger 1 to have a more superior heat exchange performance, but in terms of manufacturing, it is also necessary to design it in combination with the structural molding characteristics of the heat exchange plate 10, and convert the differences in material molding into a structure of the heat exchange plate 10 that is beneficial to the heat exchange performance, while conforming to the heat exchange requirements and manufacturing characteristics of the heat exchanger 1.

[0056] In some specific embodiments, the heat exchange plate 10 is made of aluminum alloy plate, the thickness H of the substrate 110 is generally about 0.4-0.5 mm, the maximum width λ1 of the orthographic projection of the first groove 122 on the plane where the substrate 110 is located and the depth H1 of the first groove 122 satisfy: 2.5≤λ1 / H1≤5, the maximum width λ2 of the orthographic projection of the eighth groove 127 on the plane where the substrate 110 is located and the depth Dp1 of the eighth groove 127 satisfy: 3.5≤λ2 / DP1≤7, so that the area where the first protrusion 121 is located has better heat exchange performance, and the top of the eighth protrusion has sufficient thickness to ensure the strength of the heat exchange plate 10. Specifically, on the one hand, the first protrusion 121 meets the technical requirement of 2.5≤λ1 / H1≤5, and the corresponding area gives priority to ensuring the heat exchange performance of the product. For example, the first protrusion 121 is set in the heat exchange area 140, and the heat exchange performance of the heat exchange area 140 is given priority. That is, the superior material stretching design is achieved through the first protrusion, providing more heat exchange area and more detailed heat exchange space and structure. On the other hand, the eighth protrusion 126 meets the technical requirement of 3.5≤λ2 / DP1≤7, and the corresponding area balances the heat exchange performance and product reliability of the product. For example, the eighth protrusion is set in the corner hole area. Through appropriate material stretching, while meeting the flow and heat exchange requirements of the corresponding area, the wall thickness of the fluid channel and the strength of the post-welding structure are ensured. In addition, in such an area, the fluid distribution is given priority in the structural function of the overall product, and the technical requirement of 3.5≤λ2 / DP1≤7 is also beneficial to this.

[0057] By setting the first protrusion 121 and the eighth protrusion 126 on the heat exchange plate 10, and making the first protrusion 121 and the eighth protrusion 126 conform to the above parameter relationship, the heat exchanger 1 has the technical effect of superior heat exchange performance and reliable structure. On the one hand, in the heat exchange area 140, the fluid channel corresponding to the second side of the substrate 110 will obtain a denser and more uniform solder joint arrangement, which strengthens the heat exchange effect and improves the structure of the fluid channel, which is particularly suitable for application scenarios dominated by refrigerants. The first protrusion 121 and the eighth protrusion 126 conform to the above parameter relationship, which will be more conducive to the uniformity of material molding. Logically, superior heat exchange performance requires more material thinning at the expense of more material thinning, which requires that the heat exchange plate 10 be uniformly molded during the processing process, and the difference in the maximum thinning amount in different areas is minimized as much as possible, so that there is no local "short board" in the product structure. However, this application seeks a "common benefit area" for heat exchange performance and product strength after effectively exploring the product's heat exchange performance and material molding characteristics and meeting the technical requirements. On the other hand, the two ends of the heat exchange plate 10 are key positions for the strength and distribution of the heat exchanger 1. The corner hole area of ​​the present application gives priority to ensuring strength and distribution, while taking into account superior heat exchange performance and reliable product structure.

[0058] The embodiment of the present application also provides a heat exchanger processing device, which is convenient for manufacturing the heat exchanger 1 recorded in the above embodiment. Figure 16-Figure 28 As shown, the processing device of the heat exchanger includes a first mold core 100 and a second mold core 200, the first mold core 100 includes a first base surface 101, wherein the first base surface 101 refers to the portion of the first mold core 100 without protrusions and recesses, the first mold core 100 has a plurality of first protrusions 102 protruding relative to the first base surface 101, and a first recess 103 is provided between at least some adjacent first protrusions 102, wherein the first recess 103 may be recessed relative to the first base surface 101, or may be located above the first base surface 101 or flush with the first base surface 101, and the first recess 103 here is mainly recessed relative to the first protrusion 102. The second mold core 200 includes a second base surface 201, and the second base surface 201 refers to the part of the second mold core 200 that is not provided with convex parts and concave parts. The second mold core 200 is provided with a plurality of second concave parts 203 that are recessed relative to the second base surface 201, and a second convex part 202 is provided between at least some adjacent second concave parts 203, wherein the second convex part 202 may protrude relative to the second base surface 201, or may be located below the second base surface 201 or flush with the second base surface 201, and the second convex part 202 here mainly protrudes relative to the second concave part 203, the first convex part 102 is arranged correspondingly to the second concave part 203, the second convex part 202 is arranged correspondingly to the first concave part 103, the first convex part 102 and the second concave part 203 correspond to the first convex part 121 and the first concave part 122 of the heat exchange plate 10, and the second convex part 202 and the first concave part 103 correspond to the second convex part 123 and the second concave part 124 of the heat exchange plate 10. Fig.25 , Fig.26As shown, the height of the first convex portion 102 relative to the first base surface 101 is defined as H10, the depth of the first concave portion 103 relative to the first base surface 101 is defined as H30, the height of the second convex portion 202 relative to the second base surface 201 is defined as H20, and the depth of the second concave portion 203 relative to the second base surface 201 is defined as H40, wherein H10>H20, and H10-H40>H20-H30. During the processing, the first protrusion 102 acts on the heat exchange plate 10 to be processed to form a first protrusion 121, and the back of the first protrusion 121 forms a first groove 122. The second protrusion 202 acts on the heat exchange plate 10 to be processed to form a second protrusion 123, and the back of the second protrusion 123 forms a second groove 124. Since the height H10 of the first protrusion 102 relative to the first base surface 101 is greater than the height H20 of the second protrusion 202 relative to the second base surface 201, the depth of the first groove 122 formed after processing is greater than the depth of the second groove 124, so that the first groove 122 and the second groove 124 on both sides of the heat exchange plate 10 formed by the processing have different depths, thereby adapting to different media on both sides of the heat exchange plate 10, thereby improving the heat exchange performance of the heat exchanger 1. In addition, since the first protrusion 102 has a greater height than the second protrusion 202, during the processing, the first protrusion 102 acts on the heat exchange plate to be processed. When the heat exchange plate 10 is formed, the deformation of the corresponding area of ​​the heat exchange plate 10 is large, the thickness reduction of the top of the first protrusion 121 formed by the heat exchange plate 10 is greater than the thickness reduction of the top of the second protrusion 123, the height H1 of the first protrusion 102 relative to the first base surface 101, the height H2 of the second protrusion 202 relative to the second base surface 201, the depth H3 of the first recess 103 relative to the first base surface 101 and the depth H4 of the second recess 203 relative to the second base surface 201 satisfy H1-H4>H2-H3, when the first mold core 100 and the second mold core 200 are cooperated, the distance between the first protrusion 102 and the second recess 203 is smaller than the distance between the second protrusion 202 and the first recess 103, so that the top of the first protrusion 121 and the top of the second protrusion 123 are more closely fitted to the surface of the mold core, reducing the difference between the finally formed heat exchange plate 10 and the heat exchange plate 10 to be formed, and meeting the heat exchange requirements of the heat exchanger 1.

[0059] It should be pointed out that Fig.25 , Fig.26 The illustrated embodiment further includes a third protrusion 204 and a third recess 104 . In some embodiments, the third protrusion 204 and the third recess 104 may not be included.

[0060] The first mold core 100 or the second mold core 200 is moved, or the first mold core 100 and the second mold core 200 are moved simultaneously to process the plate to be processed between the first mold core 100 and the second mold core 200. When the first base surface 101 of the first mold core 100 contacts one side of the plate, and the second base surface 201 of the second mold core 200 contacts the other side of the plate, or the first mold core 100 and the second mold core 200 slightly squeeze the plate, the first mold core 100 and the second mold core 200 are matched. When the first mold core 100 and the second mold core 200 are matched, the first base surface 101 and the second base surface 201 are in contact with each other. The base surface 201 has a predetermined distance, for example, the predetermined distance is set to the thickness of the plate to be processed, or slightly greater than or less than the thickness of the plate. This difference is mainly used to control the reasonable tolerance of the positions of the first mold core 100 and the second mold core 200. The predetermined distance between the first base surface 101 and the second base surface 201 is defined as H0, the height H10 of the first protrusion 102 relative to the first base surface 101, and the height H20 of the second protrusion 202 relative to the second base surface 201 satisfy: 0<H10-H20≤2.8H0. Since the thickness of the heat exchange plate 10 directly affects the material thinning degree of the protrusion top, therefore, the control 0<H10-H20≤2.8H0, so as to reasonably adjust the height of the first convex portion 102 and the height of the second convex portion 202 according to the thickness of the heat exchange plate 10, and then adjust the depth of the first groove 122 and the second groove 124 on both sides of the heat exchange plate 10, so that the surface of the first convex portion 102 is in contact with the surface of the first groove 122 of the heat exchange plate 10 as much as possible, and the surface of the first concave portion 103 is in contact with the surface of the first protrusion 121 of the heat exchange plate 10 as much as possible, thereby reducing the difference between the finally formed heat exchange plate 10 and the heat exchange plate 10 to be formed. Specifically, the first base surface 101 and The predetermined distance between the second base surface 201 can be 0.2-0.8mm, the height H10 of the first protrusion 102 can be 0.9mm, and the height H20 of the second protrusion 202 can be 0.85mm, that is, 0.05mm of material thinning is removed in advance at the top of the first protrusion 121 to ensure that the first groove 122 of the heat exchange plate 10 reaches the design value when the first core 100 and the second core 200 are stamped. The depth value of the first groove 122 after stamping is a positive tolerance value. After a large number of stampings, the positive tolerance value slowly develops toward the lower deviation value, thereby improving the service life of the processing device.

[0061] In some specific embodiments, Fig.25 , Fig.26As shown, when the first mold core 100 and the second mold core 200 are arranged in cooperation, the distance between the first protrusion 102 and the second recess 203 is defined as h10, and the distance between the second protrusion 202 and the first recess 103 is defined as h20. The height of the first protrusion 102 relative to the first base surface 101 is H10, and the height of the second protrusion 202 relative to the second base surface 201 is H20, wherein, -0.15mm≤(h10+H10)-(h20+H20)≤0.15mm. Since the height difference of the top of each protrusion can be compensated by filling with solder when welding the heat exchange plate 10, such as the height difference of the top of multiple first protrusions 121 or the height difference of the top of multiple second protrusions 123, by satisfying the above relationship, the cold welding between the top of the first protrusion 121 and the adjacent heat exchange plate 10 is reduced, and the cold welding between the top of the second protrusion 123 and the adjacent heat exchange plate 10 is reduced.

[0062] In some specific embodiments, Fig.21 , Fig.25 and Fig.26 As shown, the first mold core 100 has a third recess 104 in addition to the first convex portion 102 and the first concave portion 103. The third recess 104 is located between at least part of the adjacent first convex portions 102. The distance between the third recess 104 and the top of the first convex portion 102 is smaller than the distance between the first concave portion 103 and the top of the first convex portion 102. The second mold core 200 has a third convex portion 204. The third convex portion 204 is located between at least part of the adjacent second concave portions 203. The distance between the third convex portion 204 and the bottom of the second concave portion 203 is smaller than the distance between the second convex portion 202 and the bottom of the second concave portion 203. The third concave 104 and the third convex 204 are spaced apart from each other. Correspondingly, by arranging the first recess 103 and the third recess 104 with different depths on the first mold core 100, and arranging the second protrusion 202 and the third protrusion 204 with different heights on the second mold core 200, the heat exchange plate 10 forms an asymmetric convex structure on the front and back sides, so that the difference in flow area between the fluid channel on the front side of the heat exchange plate 10 and the fluid channel on the back side of the heat exchange plate 10 is further increased to meet the heat exchange requirements of different heat exchange media, and this processing device is suitable for heat exchange plates 10 with complex structures, and can process complex curved surface shapes, and during stamping, it can reduce the problems of cracking and insufficient depth of the heat exchange plate 10 caused by relatively large material thinning.

[0063] like Fig.25As shown, when the first mold core 100 and the second mold core 200 are arranged in cooperation, the distance between the first convex portion 102 and the second concave portion 203 is defined as h10, the distance between the second convex portion 202 and the first concave portion 103 is defined as h20, and the distance between the third convex portion 204 and the third concave portion 104 is defined as h30, wherein h30>h10, h20>h10, the first convex portion 102 and the second concave portion 203 are processed to form the first convex portion 121 of the heat exchange plate 100, the second convex portion 202 and the first concave portion 103 are processed to form the second convex portion 123 of the heat exchange plate 10, and the third convex portion 204 and the third concave portion 104 are processed to form the fifth convex portion 125 of the heat exchange plate 10, as shown in FIG. Figure 5 As shown, the above parameters are satisfied so that the thickness of the top of the second protrusion 123 and the fifth protrusion on the same side of the heat exchange plate 10 is greater than the thickness of the top of the first protrusion 121 on the other side of the heat exchange plate 10, thereby increasing the flow area of ​​the groove of the heat exchange plate 10 toward the first core side, that is, Figure 5 The flow area of ​​the second heat exchange channel in the heat exchange plate 10 is increased, while the flow area of ​​the groove on the side of the heat exchange plate 10 facing the second core 200 remains unchanged, thereby expanding the difference in flow area on both sides of the heat exchange plate 10 to meet the heat exchange requirements of different heat exchange media and improve the heat exchange performance of the heat exchanger 1.

[0064] In some specific embodiments, Figure 16-Figure 22 As shown, when the first protrusion 121 of the heat exchange plate 10 is a corrugated protrusion, the first protrusion 102 of the first mold core 100 is a corrugated protrusion correspondingly, and a plurality of corrugated protrusions are arranged along the length direction of the first mold core 100, as shown in FIG. Fig. 22 As shown, the corrugated protrusion includes a plurality of first extension segments 1021, two adjacent first extension segments 1021 are arranged at an angle, and the plurality of first extension segments 1021 are connected end to end to form a corrugated protrusion, and the first extension segment 1021 is arranged obliquely relative to the length direction of the first mold core 100, and the first concave portion 103 is a corrugated groove, and the corrugated groove includes a plurality of second extension segments 1031, two adjacent second extension segments 1031 are arranged at an angle, and the plurality of second extension segments 1031 are connected end to end to form a corrugated groove, and the second extension segment 1031 is arranged obliquely relative to the length direction of the first mold core 100. Figure 16-Figure 19 As shown, the first convex portion 102 and the first concave portion 103 are single herringbone waveforms, and the second convex portion 202 and the second concave portion 203 are single herringbone waveforms. Figure 20-Figure 22The first convex portion 102 and the first concave portion 103 are multiple herringbone waveforms, the second convex portion 202 and the second concave portion 203 are multiple herringbone waveforms, the single herringbone waveform and the multiple herringbone waveform have been introduced in the above-mentioned heat exchange plate 10, and will not be repeated here. Of course, the first convex portion 102 and the first concave portion 103 as well as the second convex portion 202 and the second concave portion 203 may also adopt other shapes, such as a point wave structure, that is, the second concave portion 203 adopts a pit structure, the first convex portion 102 is a convex structure corresponding to the shape of the pit structure, the first concave portion 103 is a pit structure, and the second convex portion 202 is a convex structure corresponding to the shape of the pit structure, as long as the first convex portion 102 and the second concave portion 203 and the second convex portion 202 and the first concave portion 103 are corresponding shapes.

[0065] In some specific embodiments, Fig.23As shown, the first mold core 100 includes a first corner hole area and a first heat exchange area 400, the first corner hole area includes a first sub-area 301 and a second sub-area 302, along the length direction of the first mold core 100, the first sub-area 301 is close to the first end of the first mold core 100, the second sub-area 302 is close to the second end of the first mold core 100, the first heat exchange area 400 is located between the first sub-area 301 and the second sub-area 302, the second mold core 200 includes a second corner hole area and a second heat exchange area (not shown in the figure), the second corner hole area includes a third sub-area and a fourth sub-area (not shown in the figure), along the length direction of the second mold core 200, the third sub-area is close to the first end of the second mold core 200, the fourth sub-area is close to the second end of the second mold core 200, and the second The heat exchange zone is located between the third sub-zone and the fourth sub-zone, and the first corner hole zone is arranged corresponding to the second corner hole zone, the first heat exchange zone 400 is arranged corresponding to the second heat exchange zone, the first convex portion 102 and the first concave portion 103 are arranged in the first heat exchange zone 400, the second convex portion 202 and the second concave portion 203 are arranged in the second heat exchange zone, the first corner hole zone is provided with a fourth convex portion 105, and the second corner hole zone is provided with a fourth concave portion 205 arranged corresponding to the fourth convex portion 105, wherein the fourth convex portion 105 can be arranged only in the first sub-zone 301 or the second sub-zone 302, or can be arranged in the first sub-zone 301 and the second sub-zone 302 at the same time, the fourth concave portion 205 can be arranged only in the third sub-zone 501 or the fourth sub-zone, or can be arranged in the third sub-zone and In the fourth sub-area, when the first mold core 100 and the second mold core 200 are arranged in cooperation, the distance between the fourth convex portion 105 and the fourth concave portion 205 is greater than the distance between the first convex portion 102 and the first concave portion 103. Since the first heat exchange zone 400 of the first mold core 100 and the second heat exchange zone of the second mold core 200 correspond to the heat exchange zone 140 of the heat exchange plate 10, and the first corner hole zone of the first mold core 100 and the second corner hole zone of the second mold core 200 correspond to the corner hole zone of the heat exchange plate 10, in order to improve the heat exchange performance of the heat exchange zone 140 and the wall thickness of the fluid channel in the corner hole zone and the strength of the structure after welding, the maximum width of the first groove 122 located on the back side of the first convex portion 121 of the heat exchange zone 140 on the substrate 110 and the first groove 122 on the back side of the first convex portion 121 of the heat exchange zone 140 are greater than the maximum width of the first groove 12 ... first groove 122 on the back side of the first convex portion 121 of the heat exchange zone 140. The maximum width of the orthographic projection of the second groove 124 on the back of the second protrusion 123 on the substrate 110 is usually smaller than the maximum width of the orthographic projection of the eighth groove 127 on the back of the eighth protrusion 126 located in the corner hole area on the substrate 110, that is, the deformation of the heat exchange plate in the area corresponding to the first protrusion 121 is greater than the deformation of the heat exchange plate 10 in the area corresponding to the eighth protrusion 126, and the thinning degree of the material at the top of the first protrusion 121 is greater than the thinning degree of the material at the top of the eighth protrusion 126. In order to make the top of the first protrusion 121 and the top of the eighth protrusion 126 as much as possible at the same height to avoid the cold welding of the heat exchanger, the distance between the eighth protrusion 126 and the eighth groove 127 is greater than the distance between the first protrusion 102 and the second concave portion 203.Make the top of the first protrusion 121 and the top of the eighth protrusion 126 contact with the corresponding second concave portion 203 and fourth concave portion 205 of the second mold core 200 as much as possible, and reduce the height difference between the first protrusion 121 and the eighth protrusion 126.

[0066] In some specific embodiments, the height H10 of the first convex portion 102 relative to the first base surface 101 and the maximum width w1 of the projection of the first convex portion 102 on the plane where the first base surface 101 is located, as well as the height H50 of the fourth convex portion 105 relative to the first base surface 101 and the maximum width w2 of the projection of the fourth convex portion 105 on the plane where the first base surface 101 is located satisfy: H10 / w1<H50 / w2, and H10>H50. Specifically, the height H10 of the first convex portion 102 relative to the first base surface 101 and the maximum width w1 of the projection of the first convex portion 102 on the plane where the first base surface 101 is located may be 2.5≤H10 / w1≤5, the height H50 of the fourth convex portion 105 relative to the first base surface 101 and the maximum width w2 of the projection of the fourth convex portion 105 on the plane where the first base surface 101 is located may be 3.5≤H50 / w2≤7. The corresponding processing of the heat exchange plate 10 The formed first groove 122 has a sufficient depth. The first groove 122 enhances the turbulence effect of the heat exchange fluid and increases the contact area between the heat exchange fluid and the heat exchange plate 10. The heat exchange plate 10 in this area has good heat exchange performance. The depth of the eighth groove 127 formed by the heat exchange plate 10 is smaller than the depth of the first groove 122. The heat exchange plate 10 in this area has good structural reliability. By controlling the parameter relationship between the first convex portion 102 and the fourth convex portion 105, the heat exchange performance and product reliability of the heat exchanger 1 are balanced. For example, the fourth convex portion 105 is arranged in the corner hole area. Through appropriate material stretching, while meeting the flow and heat exchange requirements of the corresponding area, the wall thickness of the fluid channel and the strength of the post-welding structure are ensured. In addition, in such an area, fluid distribution is preferentially reflected in the structural function of the overall product. The technical requirement of 3.5≤λ2 / DP2≤7 is also beneficial to this.

[0067] Of course, in some specific embodiments, the fourth protrusion 105 can also be arranged in the second corner hole area, and the fourth recess 205 is arranged in the first corner hole area, and the maximum width of the projection of the first protrusion 102 on the plane where the first base surface 101 is located is defined as w1, and the maximum width of the projection of the fourth protrusion 105 on the plane where the second base surface 201 is located is defined as w2, and the height of the fourth protrusion 105 relative to the second base surface 201 is defined as H50, wherein H10 / w1<H50 / w2, and H10>H50. When the positions of the fourth protrusion 105 and the fourth recess 205 change, as long as the above parameters are met, the heat exchange performance and product reliability of the heat exchanger 1 can also be balanced.

[0068] The present application also provides a heat exchanger processing method, which can process the heat exchange plate 10 of the heat exchanger 1 by the above-mentioned heat exchanger processing device, and the processing method includes:

[0069] a. placing a plate between the first mold core 100 and the second mold core 200, wherein the plate has a first side surface and a second side surface, wherein the first side surface faces the first mold core 100, and the second side surface faces the second mold core 200;

[0070] b. Move the first mold core 100 and / or the second mold core 200, and close the mold with the second mold core 100. During the closing process, the first convex portion 102 pushes a part of the plate toward the second concave portion 203 to form a first groove 122 of the heat exchange plate 10, and the back of the first groove 122 forms a first protrusion 121. The second convex portion 202 pushes a part of the plate toward the first concave portion 103 to form a second groove 124 of the heat exchange plate 10, and the back of the second groove 124 forms a second protrusion 123. The distance between the second convex portion 202 and the first concave portion 103 is greater than the distance between the first convex portion 102 and the second concave portion 203.

[0071] During the processing, Fig.24 As shown, when the first convex portion 102 and the second convex portion 202 act on the plate to be processed, the deformation of the corresponding area of ​​the plate is relatively large, and the thickness of the top of the first protrusion 121 and the top of the second protrusion 123 of the heat exchange plate 10 formed by the processing is thinned, and the top of the first protrusion 121 and the top of the second protrusion cannot be completely fitted with the surface of the mold core. Moreover, since there is a third concave portion 104 between adjacent first convex portions 102, and there is a third convex portion 204 corresponding to the third concave portion 104 between adjacent second concave portions 203, and the protruding height of the third convex portion 204 is less than the protruding height of the second convex portion 202, the thickness thinning amount of the top of the first protrusion is less than the thickness thinning amount of the top of the second protrusion, that is, the top thickness of the first protrusion is The height h10 is greater than the top thickness h20 of the second protrusion. If the height of the first protrusion 102 relative to the first base surface 101 and the height of the second protrusion 202 relative to the second base surface 201 are exactly the heights of the corresponding first protrusions 121 and second protrusions 123 on the heat exchange plate 10 to be formed, the heat exchange plate 10 formed by processing has material thinning, resulting in insufficient height of the first protrusions 121 and second protrusions 123 on the heat exchange plate 10 formed by processing, or insufficient depth of the first groove 122 on the back of the first protrusion 121 and the second groove 124 on the back of the second protrusion 123, especially insufficient height of the top of the second protrusion and insufficient depth of the first groove on the back of the first protrusion, which affects the heat exchange performance. Fig.25As shown, the distance between the second convex portion 202 and the first concave portion 103 is greater than the distance between the first convex portion 102 and the second concave portion 203. By increasing the height of the first convex portion 102, the thickness reduction amount of the top of the second protrusion 123 formed by the second convex portion 202 is not greater than the thickness reduction amount of the top of the first protrusion 121. The top of the second protrusion 123 can fit the first concave portion 103 of the first mold core 100 as much as possible, and the first protrusion 121 increases the height of the first convex portion 102, thereby increasing the thickness of the heat exchange plate. The depth of a groove is increased and the distance between the top of the first protrusion 121 and the second recess 203 of the second mold core 200 is reduced, so that the surfaces of the first mold core 100 and the second mold core 200 are as closely fitted as possible with the surface of the processed heat exchange plate 10, thereby reducing the difference between the finally formed heat exchange plate 10 and the heat exchange plate 10 to be formed. Moreover, the first groove 122 and the second groove 124 of the heat exchange plate 10 have different depths, thereby adapting to different media on both sides of the heat exchange plate 10, thereby improving the heat exchange requirements of the heat exchanger 1.

[0072] It can be understood that the first mold core 100 and the second mold core 200 may not have the third convex portion 204 and the third concave portion 104, the first convex portion of the first mold core may be arranged between adjacent first concave portions, or the first concave portion of the first mold core may be arranged between adjacent first convex portions, the second convex portion of the second mold core may be arranged between adjacent second concave portions, or the second concave portion of the second mold core may be arranged between adjacent second convex portions.

[0073] It can be understood that the structures of the convex and concave parts of the first mold core 100 and the second mold core 200 can be any other structures, and the first mold core 100 and the second mold core 200 can ensure the corresponding settings of the positions of the convex and concave parts through limiting structures, such as through mold frames.

[0074] The heat exchanger provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A heat exchanger processing device, comprising a first mold core and a second mold core, characterized in that: The first mold core includes a first base surface, the first mold core has a plurality of first convex portions protruding relative to the first base surface, and a first concave portion is provided between at least some adjacent first convex portions; the second mold core includes a second base surface, the second mold core has a plurality of second concave portions recessed relative to the second base surface, and a second convex portion is provided between at least some adjacent second concave portions; the first convex portions are arranged correspondingly to the second concave portions, and the second convex portions are arranged correspondingly to the first concave portions; a height of the first convex portion relative to the first base surface is defined as H10, a depth of the first concave portion relative to the first base surface is defined as H30, a height of the second convex portion relative to the second base surface is defined as H20, and a depth of the second concave portion relative to the second base surface is defined as H40, wherein H10>H20, and H10-H40>H20-H30.

2. The heat exchanger processing device according to claim 1, characterized in that: When the first mold core and the second mold core are arranged in cooperation, the first base surface and the second base surface have a predetermined distance, and the predetermined distance between the first base surface and the second base surface is defined as H0. The height H10 of the first convex portion relative to the first base surface, the height H20 of the second convex portion relative to the second base surface, and the predetermined distance H0 between the first base surface and the second base surface satisfy: 0<H10-H20≤2.8H0.

3. The heat exchanger processing device according to claim 1, characterized in that: When the first mold core and the second mold core are arranged in cooperation, the distance between the first convex portion and the second concave portion is defined as h10, and the distance between the second convex portion and the first concave portion is defined as h20. The height H10 of the first convex portion relative to the first base surface, the height H20 of the second convex portion relative to the second base surface, the distance h10 between the first convex portion and the second concave portion, and the distance h20 between the second convex portion and the first concave portion satisfy: -0.15mm≤(h10+H10)-(h20+H20)≤0.15mm.

4. The heat exchanger processing device according to claim 3, characterized in that: The first mold core has a third recessed portion, which is located between at least part of the first convex portions, and a distance between the third recessed portion and the top of the first convex portion is smaller than a distance between the first recessed portion and the top of the first convex portion. The second mold core has a third convex portion, which is located between at least part of the second recessed portions, and a distance between the third convex portion and the bottom of the second recessed portion is smaller than a distance between the second convex portion and the bottom of the second recessed portion. The third recessed portion is arranged correspondingly to the third convex portion.

5. The heat exchanger processing device according to claim 4, characterized in that: When the first mold core and the second mold core are arranged in cooperation, the distance between the third convex portion and the third concave portion is defined as h30, and the distance h30 between the third convex portion and the third concave portion and the distance h10 between the first convex portion and the second concave portion satisfy: h30>h10.

6. The heat exchanger processing device according to any one of claims 1 to 5, characterized in that: The first mold core includes a first corner hole area and a first heat exchange area, the first corner hole area includes a first sub-area and a second sub-area, along the length direction of the first mold core, the first sub-area is close to the first end of the first mold core, the second sub-area is close to the second end of the first mold core, and the first heat exchange area is located between the first sub-area and the second sub-area, the second mold core includes a second corner hole area and a second heat exchange area, the second corner hole area includes a third sub-area and a fourth sub-area, along the length direction of the second mold core, the third sub-area is close to the first end of the second mold core, the fourth sub-area is close to the second end of the second mold core, and the second heat exchange area is located between the third sub-area and the fourth sub-area, and the first corner hole area is correspondingly arranged with the second corner hole area, the first heat exchange area is correspondingly arranged with the second heat exchange area, the first convex portion and the first concave portion are arranged in the first heat exchange area, and the second convex portion and the second concave portion are arranged in the second heat exchange area; The processing device of the heat exchanger also has a fourth convex portion and a fourth concave portion, the fourth convex portion is arranged at one of the first corner hole area and the second corner hole area, and the fourth concave portion is arranged at the other of the first corner hole area and the second corner hole area, the fourth concave portion and the fourth convex portion are arranged correspondingly, and when the first mold core and the second mold core are arranged in cooperation, the distance between the fourth convex portion and the fourth concave portion is greater than the distance between the first convex portion and the second concave portion.

7. The heat exchanger processing device according to claim 6, characterized in that: The fourth convex portion is arranged in the first corner hole area, and the fourth concave portion is arranged in the second corner hole area. The maximum width of the projection of the first convex portion on the plane where the first base surface is located is defined as w1, the maximum width of the projection of the fourth convex portion on the plane where the first base surface is located is defined as w2, and the height of the fourth convex portion relative to the first base surface is defined as H50, wherein H10 / w1<H50 / w2, and H10>H50.

8. The heat exchanger processing device according to claim 6, characterized in that: The fourth convex portion is arranged in the second corner hole area, and the fourth concave portion is arranged in the first corner hole area. The maximum width of the projection of the first convex portion on the plane where the first base surface is located is defined as w1, the maximum width of the projection of the fourth convex portion on the plane where the second base surface is located is defined as w2, and the height of the fourth convex portion relative to the second base surface is defined as H50, wherein H10 / w1<H50 / w2, and H10>H50.

9. The heat exchanger processing device according to any one of claims 1 to 5, characterized in that: The first convex part is a corrugated protrusion, the first concave part is a corrugated groove, a plurality of the corrugated protrusions are arranged along the length direction of the first mold core, and a corrugated groove is provided between at least some adjacent corrugated protrusions, the corrugated protrusions include a plurality of first extension sections, two adjacent first extension sections are arranged at an angle, and the first extension sections are arranged obliquely relative to the length direction of the first mold core, the corrugated groove includes a plurality of second extension sections, two adjacent second extension sections are arranged at an angle, and the second extension sections are arranged obliquely relative to the length direction of the first mold core; The second convex portion is a corrugated protrusion, and the second concave portion is a corrugated groove. A plurality of the corrugated protrusions are arranged along the length direction of the second mold core, and a corrugated groove is provided between at least some adjacent corrugated protrusions. The corrugated protrusions include a plurality of first extension sections, and two adjacent first extension sections are arranged at an angle, and the first extension sections are inclined relative to the length direction of the second mold core. The corrugated groove includes a plurality of second extension sections, and two adjacent second extension sections are arranged at an angle, and the second extension sections are inclined relative to the length direction of the second mold core.

10. A method for processing a heat exchanger, capable of processing heat exchange plates of a heat exchanger using the heat exchanger processing device according to any one of claims 1 to 9, the processing method comprising: a. placing a plate between the first mold core and the second mold core, the plate having a first side surface and a second side surface, the first side surface facing the first mold core, and the second side surface facing the second mold core; b. Move the first mold core and / or the second mold core to close the mold with the second mold core. During the closing process, the first convex portion pushes a part of the plate toward the second concave portion to form a first groove of the heat exchange plate, and a first convex portion is formed on the back side of the first groove. The second convex portion pushes a part of the plate toward the first concave portion to form a second groove of the heat exchange plate, and a second convex portion is formed on the back side of the second groove. The distance between the second convex portion and the first concave portion is greater than the distance between the first convex portion and the second concave portion.

11. A heat exchanger, comprising a plurality of heat exchange plates, wherein the heat exchange plates include a first protrusion and a second protrusion, the back side of the first protrusion has a first groove, the back side of the second protrusion has a second groove, the protruding directions of the first protrusion and the second protrusion are opposite, and the first protrusion and the second protrusion are formed by the processing device of the heat exchanger according to any one of claims 1 to 9.

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