Plate die and heat exchanger

Abstract

The invention provides a plate sheet mold which comprises a mold core, the mold core comprises a first forming surface and a second forming surface, the first forming surface comprises a first base part and a plurality of convex parts, each convex part comprises an extrusion surface, the extrusion surface comprises a middle part and an edge part, the edge part is closer to the first base part than the middle part in the length direction of the convex parts, and the edge part is closer to the second base part than the middle part in the direction perpendicular to the extrusion surface. The distance between the middle part and the second forming surface is D1, the distance between at least part of the edge parts and the second forming surface is D2, and D1 is smaller than D2; d1 is smaller than D2, so that the plate at the middle part is in contact with the second forming surface, a gap is formed between the plate at the edge part and the second forming surface, and in the process that the first forming surface and the second forming surface jointly extrude the plate to form a plate sheet, one side surface of the plate at the edge part is extruded by the convex part; the other side face of the plate at the edge position is not extruded by the second forming face, so that the plate at the edge position is easier to thin, and the probability that the plate is broken in the thinning process when the two sides of the plate are extruded at the same time is reduced.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and in particular to a plate mold and a heat exchanger. Background Technology

[0002] The sheet mold consists of two cores, with the sheet material placed between them for shaping. During processing, the protruding parts of the mold compress the sheet material, creating a raised section of a certain height. The sheet material thins significantly at the protruding ends, making it prone to cracking. Summary of the Invention

[0003] Therefore, it is necessary to provide a plate mold and heat exchanger that reduces the probability of plate breakage in order to address the above problems.

[0004] The technical solution adopted in this invention is as follows:

[0005] A sheet mold is provided, including a mold core. The mold core includes a first forming surface and a second forming surface. The first forming surface includes a first base and a plurality of protrusions. Along the mold closing direction of the mold core, the protrusions protrude relative to the first base towards the second forming surface. The length of the protrusion is greater than its width. The protrusion includes an extrusion surface, which includes a middle portion and an edge portion. Along the length direction of the protrusion, the edge portion is closer to the first base than the middle portion. Along a direction perpendicular to the extrusion surface, the distance between the middle portion and the second forming surface is D1, and at least a portion of the edge portion is at a distance D2 from the second forming surface, where D1 < D2.

[0006] In the above technical solution, since D1 is smaller than D2, the plate in the middle position is in contact with the second forming surface, and there is a gap between the plate in the edge position and the second forming surface. During the process of the first forming surface and the second forming surface jointly extruding the plate to form a sheet, one side of the plate in the edge position is squeezed by the protrusion, while the other side of the plate in the edge position is not squeezed by the second forming surface. Therefore, the plate in the edge position is easier to thin, reducing the probability of cracking during the thinning process when the plate is squeezed on both sides at the same time.

[0007] The present invention also provides a heat exchanger comprising a plurality of stacked plates, each plate including a flow-dispersing portion and a substrate, the flow-dispersing portion protruding relative to the substrate, the flow-dispersing portion including a first flow-dispersing section and a second flow-dispersing section, the first flow-dispersing section being closer to the substrate than the second flow-dispersing section along the extending direction of the flow-dispersing portion, and the protrusion distance of the first flow-dispersing section being less than the protrusion distance of the second flow-dispersing section along the stacking direction of the plates.

[0008] In the above technical solution, since the protrusion distance of the first turbulence section is smaller than that of the second turbulence section, the plate thinning rate at the first turbulence section is reduced. Furthermore, since the first turbulence section is closer to the substrate than the second turbulence section, the plate thinning rate near the end of the turbulence section is reduced, thereby reducing the probability of plate breakage. Attached Figure Description

[0009] Figure 1 A three-dimensional structural diagram of a heat exchanger provided by the present invention;

[0010] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the middle plate;

[0011] Figure 3 for Figure 2 A schematic diagram of the structure of the middle plate from another direction;

[0012] Figure 4 A three-dimensional structural diagram of a plate mold provided by the present invention;

[0013] Figure 5 for Figure 4 A three-dimensional structural diagram of the second core mold.

[0014] Figure 6 for Figure 4 A three-dimensional structural diagram of the first mold core;

[0015] Figure 7 This invention provides a schematic diagram of the structure of a plate mold for processing plates;

[0016] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure;

[0017] Figure 9 for Figure 8 An enlarged schematic diagram of the structure at point A;

[0018] Figure 10 for Figure 9 Schematic diagram of the middle mold core;

[0019] Figure 11 for Figure 4 A schematic diagram of another embodiment of the first mold core;

[0020] Figure 12 for Figure 6 A schematic diagram of one embodiment of the central convex portion;

[0021] Figure 13 for Figure 12 A schematic diagram of the mating structure between the protrusion and the second mold core;

[0022] Figure 14 for Figure 6 Schematic diagram of the central convex part;

[0023] Figure 15 This is a schematic diagram of the structure of the first mold core and the second mold core in Example 3;

[0024] Figure 16 This is a schematic diagram of the structure of the first mold core and the second mold core in Example 4;

[0025] Figure 17 This is a schematic diagram of the structure of the first mold core in Example 5.

[0026] Explanation of reference numerals in the attached figures:

[0027] 11. Mold core; 12. First molding surface; 121. First base; 122. Protrusion; 123. Extrusion surface; 1231. Middle part; 1232. Edge; 1233. First section; 1234. Second section; 1235. Connecting part; 1236. First protrusion; 1237. Second protrusion; 13. Second molding surface; 131. Second base; 132. Recess; 1321. First recess; 1322. Second recess; 14. First mold core; 15. Second mold core; 16. Side peripheral part; 17. Molding part; 100. Plate; 101. Baffle part; 1011. First baffle section; 1012. Second baffle section; 102. Substrate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and technical solutions. It should be understood that the specific technical solutions described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] like Figures 1-3 As shown, this application provides a heat exchanger including a plurality of stacked plates 100. Each plate 100 includes a flow-deflecting portion 101 and a substrate 102. The flow-deflecting portion 101 protrudes relative to the substrate 102 and includes a first flow-deflecting section 1011 and a second flow-deflecting section 1012. Along the extending direction of the flow-deflecting portion 101, the first flow-deflecting section 1011 is closer to the substrate 102 than the second flow-deflecting section 1012. Along the stacking direction of the plates 100, the first flow-deflecting section 1011 is closer to the substrate 102 than the second flow-deflecting section 1012. The protrusion distance of the first turbulence section 1011 is smaller than the protrusion distance of the second turbulence section 1012. Since the protrusion distance of the first turbulence section 1011 is smaller than the protrusion distance of the second turbulence section 1012, the thinning rate of the plate 100 at the first turbulence section 1011 is reduced. Furthermore, the first turbulence section 1011 is closer to the substrate 102 than the second turbulence section 1012, which reduces the thinning rate of the plate 100 near the end position of the turbulence section 101, thereby reducing the probability of the plate 100 breaking.

[0030] Please see Figures 4-17 This invention provides a mold for a sheet 100, including a mold core 11. The mold core 11 includes a first forming surface 12 and a second forming surface 13. During the processing of the sheet 100, the sheet is placed between the first forming surface 12 and the second forming surface 13, and the sheet is processed by the first forming surface 12 and the second forming surface 13. In this embodiment, the mold core 11 includes a first mold core 14 and a second mold core 15. Along the mold closing direction of the first mold core 14 and the second mold core 15, the positions of the first mold core 14 and the second mold core 15 coincide. The first forming surface 12 is located on the surface of the first mold core 14 near the second mold core 15, and the second forming surface 13 is located on the surface of the second mold core 15 near the first mold core 14. The sheet 100 is then processed... During operation, the first mold core 14 and the second mold core 15 move relative to each other; that is, the first mold core 14 moves toward the second mold core 15, or the second mold core 15 moves toward the first mold core 14, or the first mold core 14 and the second mold core 15 move toward each other simultaneously. The first forming surface 12 and the second forming surface 13 process the sheet material placed between the first forming surface 12 and the second forming surface 13. The first forming surface 12 includes a first base 121 and a plurality of protrusions 122. Along the mold closing direction of the mold core 11, the protrusions 122 protrude relative to the first base 121 toward the direction closer to the second forming surface 13. The length of the protrusion 122 is greater than its width. In this embodiment, the protrusions 122 are connected to each other, such as... Figure 11 The protrusion 122 shown can also be discretely arranged. The protrusion 122 includes an extrusion surface 123. When the first forming surface 12 and the second forming surface 13 process the sheet metal, the extrusion surface 123 extrudes a portion of the sheet metal to form a turbulence portion 101 of the sheet 100. The extrusion surface 123 includes a middle portion 1231 and an edge portion 1232. Along the length direction of the protrusion 122, the edge portion 1232 is closer to the first base 121 than the middle portion 1231. Along the direction perpendicular to the extrusion surface 123, the distance between the middle portion 1231 and the second forming surface 13 is D1, and at least part of the distance between the edge portion 1232 and the second forming surface 13 is D2, where D1 < D2, because the mold core 11 is closed. During molding, the first molding surface 12 and the second molding surface 13 process the sheet metal. Since D1 is smaller than D2, the sheet metal at the middle position 1231 contacts the second molding surface 13, and there is a gap between the sheet metal at the edge position 1232 and the second molding surface 13. During the process of the first molding surface 12 and the second molding surface 13 jointly extruding the sheet metal to form the sheet 100, one side of the sheet metal at the edge position 1232 is squeezed by the protrusion 122, while the other side of the sheet metal at the edge position 1232 is not squeezed by the second molding surface 13. The sheet metal at the edge position 1232 is easier to thin, reducing the probability of cracking during the thinning process when the sheet metal is squeezed on both sides at the same time.

[0031] This article focuses on improving the structure of the mold core 11 of the plate 100 mold, which will be described in detail below with reference to the attached drawings.

[0032] Example 1

[0033] Please refer to Figures 4-5 , Figure 12 , Figure 13The first embodiment shown specifically discloses a protrusion 122 including a first segment 1233 and two second segments 1234. In this embodiment, the protrusion 122 is an elongated strip extending along its length. It should be noted that for multiple protrusions 122 extending in different directions, the length direction here refers to the length direction of the protrusion 122 itself. Since the protrusion 122 is elongated, it includes one first segment 1233 and two second segments 1234. Along the length direction of the protrusion 122, the second segment 1234 is closer to the first base 121 than the first segment 1233. One of the two second segments 1234 is located on one side of the first segment 1233. One of the second segments 1234 is located on the other side of the first segment 1233. The edge 1232 is located in the second segment 1234, and the middle segment 1231 is located in the first segment 1233. Along the mold-closing direction of the mold core 11, the protrusion distance of one of the second segments 1234 is smaller than that of the first segment 1233. When the mold core 11 is closed, the first forming surface 12 and the second forming surface 13 process the sheet material placed between the first forming surface 12 and the second forming surface 13. During processing, the protrusion 122 presses against a portion of the sheet material, causing the portion to protrude towards the second forming surface 13 to form a turbulence portion 101 of the sheet 100. Because the protrusion 122 presses against the portion of the sheet material, along the mold core 11... In the mold closing direction, one side of the partial sheet material contacts the first forming surface 12. During processing, the other side of the partial sheet material at the first segment 1233 contacts the second forming surface 13. Since the protrusion distance of the second segment 1234 is smaller than that of the first segment 1233, the other side of the partial sheet material at the second segment 1234 does not contact the second forming surface 13. That is, there is a gap between the partial sheet material at the second segment 1234 and the second forming surface 13. During the process of the first forming surface 12 and the second forming surface 13 jointly pressing the sheet material to form the sheet 100, one side of the partial sheet material at the second segment 1234 is pressed by the protrusion 122, while the other side of the partial sheet material at the second segment 1234 is not pressed by the protrusion 122. The extrusion of the two-part forming surface 13 makes it easier to thin the local sheet material at the second section 1234, reducing the probability of cracking during the sheet material thinning process when both sides of the sheet material are simultaneously extruded. Furthermore, along the length direction of the protrusion 122, the second section 1234 is closer to the first base 121 than the first section 1233, that is, the second section 1234 is closer to the end of the protrusion 122. Since the protrusion distance of the second section 1234 is smaller than that of the first section 1233, the protrusion distance of the local sheet material at the end of the protrusion 122, i.e., the second section 1234, is smaller. This reduces the amount of thinning of the local sheet material at the end of the protrusion 122, thereby reducing the probability of the sheet material 100 cracking due to sheet material thinning.

[0034] Furthermore, along the length direction of the protrusion 122, the protrusion distance of the second segment 1234 relative to the first base 121 gradually increases in the direction close to the first segment 1233. The closer to the end of the protrusion 122, the smaller the protrusion distance of the second segment 1234, thereby reducing the amount of local sheet metal thinning at the end of the protrusion 122 and thus reducing the probability of the sheet 100 breaking due to sheet metal thinning.

[0035] Furthermore, along the length direction of the protrusion 122, the second segment 1234 includes a connecting portion 1235, which is connected to the first segment 1233. The connection between the connecting portion 1235 and the first segment 1233 is smoothly transitioned. Because the connection between the connecting portion 1235 and the first segment 1233 is smoothly transitioned, the sheet metal is less likely to break when the protrusion 122 extrudes the turbulence portion 101 of the partial sheet metal forming sheet 100.

[0036] Example 2

[0037] Please refer to Figures 4-10 , Figure 14 The second embodiment shown differs from the first embodiment in that the protrusion distance of the two second segments 1234 is smaller than the protrusion distance of the first segment 1233. In this embodiment, the protrusion distance of the two second segments 1234 is smaller than the protrusion distance of the first segment 1233. When the sheet is processed, the protrusion distance of the sheet at both ends of the protrusion 122 is smaller than the protrusion distance at the center of the protrusion 122. Therefore, the local sheet thinning at both ends of the protrusion 122 is reduced, thereby reducing the probability of the sheet 100 cracking due to sheet thinning.

[0038] Example 3

[0039] Please refer to Figure 15The third embodiment shown is based on the above embodiments and specifically discloses that the mold core 11 includes a side peripheral portion 16 and a forming portion 17. The first forming surface 12 is located in the forming portion 17. The protrusion 122 includes a first protrusion 1236 and a second protrusion 1237. Along the direction perpendicular to the mold core 11 closing direction, the second protrusion 1237 is closer to the side peripheral portion 16 than the first protrusion 1236. Because the second protrusion 1237 is closer to the side peripheral portion 16 than the first protrusion 1236, the sheet metal at the first protrusion 1236 is thinner than that at the second protrusion 1237. The sheet metal at the protrusion 1236 is more prone to cracking, and thinning the sheet metal at the first protrusion 1236 is more difficult than thinning the sheet metal at the second protrusion 1237. Therefore, the actual size of the sheet metal after processing and forming the first protrusion 1236 is lower than the actual size of the sheet metal after processing and forming the second protrusion 1237. Along the mold closing direction of the mold core 11, the protrusion distance of the first protrusion 1236 relative to the first base 121 is greater than the protrusion distance of the second protrusion 1237 relative to the first base 121. The mold core 11 closes the sheet metal placed between the first forming surface 12 and the second forming surface 13. The material is processed such that, because the protrusion distance of the first protrusion 1236 relative to the first base 121 is greater than the protrusion distance of the second protrusion 1237 relative to the first base 121, the deformation of the sheet metal at the first protrusion 1236 is greater and the material thinning is more significant, while the deformation of the sheet metal at the second protrusion 1237 is smaller and the material thinning is less. Because the deformation of the second protrusion 1237 is smaller and the material thinning is less, the local sheet metal at the second protrusion 1237 compensates for the local sheet metal thinning at the first protrusion 1236, thereby reducing the material thickness at the first protrusion 1236. The thinning degree reduces the probability of the plate at the first protrusion 1236 cracking due to thinning. Furthermore, since the protrusion distance of the first protrusion 1236 relative to the first base 121 is greater than the protrusion distance of the second protrusion 1237 relative to the first base 121, it compensates for the dimensional error caused by the difficulty in thinning the plate at the first protrusion 1236, reduces the dimensional error of the plate 100 after plate forming at the first protrusion 1236 and the second protrusion 1237, increases the dimensional accuracy of the plate 100 after plate forming, and thus reduces the fitting gap when multiple plates 100 are fitted together.

[0040] Example 4

[0041] Please refer to Figure 15 , Figure 16The fourth embodiment shown is based on embodiment three, and specifically discloses that the second molding surface 13 is located in the molding part 17. The second molding surface 13 includes a second base 131 and a recess 132. The recess 132 is recessed relative to the second base 131 in a direction closer to the first mold core 14. The recess 132 includes a first recess 1321 and a second recess 1322. In a direction perpendicular to the mold closing direction of the mold core 11, the second recess 1322 is closer to the side peripheral part 16 than the first recess 1321. Since the second recess 1322 is closer to the side peripheral part 16 than the first recess 1321, the first recess... Thinning the sheet metal at the first recess 1321 is more difficult than thinning the sheet metal at the second recess 1322, and the degree of sheet metal thinning at the first recess 1321 is greater than that at the second recess 1322. Therefore, the actual size of the sheet metal at the first recess 1321 after processing is lower than that at the second recess 1322. Along the mold closing direction of the mold core 11, the recess distance of the first recess 1321 relative to the second base 131 is greater than the recess distance of the second recess 1322 relative to the second base 131. The mold core 11 is placed on the first forming surface 12 and the second forming surface 1322. The sheet material between the forming surfaces 13 is processed. Since the recess distance of the first recess 1321 relative to the second base 131 is greater than the recess distance of the second recess 1322 relative to the second base 131, the sheet material at the first recess 1321 undergoes greater deformation and material thinning, while the sheet material at the second recess 1322 undergoes less deformation and material thinning. Because the sheet material at the second recess 1322 undergoes less deformation and material thinning, the local sheet material at the second recess 1322 compensates for the local sheet material thinning at the first recess 1321, thereby reducing the thickness of the first recess 1321. The thinning of the sheet material at point 321 reduces the probability of cracking at the first recess 1321 due to thinning. Furthermore, since the recess distance of the first recess 1321 relative to the second base 131 is greater than the recess distance of the second recess 1322 relative to the second base 131, it compensates for the dimensional error caused by the difficulty in thinning the sheet material at the first recess 1321. This reduces the dimensional error of the sheet 100 after forming at the first recess 1321 and the second recess 1322, increases the dimensional accuracy of the sheet 100 after forming, and thus reduces the fitting gap when multiple sheets 100 are fitted together.

[0042] Example 5

[0043] Please refer to Figures 15-17The fifth embodiment shown is based on embodiment four. The first molding surface 12 includes multiple protrusions 122, and a first base 121 is located between adjacent protrusions 122. The first surface is defined as perpendicular to the mold-closing direction of the mold core 11. The width of the first base 121 projected onto the first surface is L1, and the width of the protrusions 122 projected onto the first surface is L2. Along the mold-closing direction of the mold core 11, the difference in protrusion distance between the first protrusion 1236 and the second protrusion 1237 is H1, and the difference in concave distance between the first recess 1321 and the second recess 1322 is H2. L1 is greater than L2, and H1 is greater than H2. Since the first molding surface 12 includes multiple protrusions 122 in this embodiment, and the first base 121 is located between adjacent protrusions 122, the positions of the first base 121 of the first molding surface 12 and the second base 131 of the second molding surface 13 overlap. When the mold core 11 is closed, the protrusion 122 of the first molding surface 12 and the concave portion 132 of the second molding surface 13 coincide. Since the first base 121 and the second base 131 are arranged adjacent to each other, the sheet metal will be thinned at both the first base 121 and the protrusion 122 when the mold core 11 is closed. When L1 is greater than L2, that is, the width of the first base 121 is greater than the width of the protrusion 122, the thinning degree of the sheet metal at the first base 121 is less than the thinning degree of the sheet metal at the protrusion 122. Therefore, H1 is set to be greater than H2 to compensate more for the thinning of the sheet metal at the protrusion 122. When L1 is less than L2, that is, the width of the first base 121 is less than the width of the protrusion 122, the thinning degree of the sheet metal at the first base 121 is greater than the thinning degree of the sheet metal at the protrusion 122. Therefore, H1 is set to be less than H2 to compensate more for the thinning of the sheet metal at the first base 121.

[0044] The technical features of the above-described technical solutions can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above-described technical solutions are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described technical solutions merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications without departing from the concept of the present invention, and these modifications all fall within the protection scope of the present invention.

Claims

1. A sheet mold characterized by, The mold core (11) comprises a first molding surface (12) and a second molding surface (13), the first molding surface (12) comprises a first base (121) and a plurality of convex portions (122), along the closing direction of the mold core (11), the convex portions (122) protrude relative to the first base (121) towards the second molding surface (13), the length of the convex portions (122) is greater than the width, the convex portions (122) comprise a pressing surface (123), the pressing surface (123) comprises a middle portion (1231) and an edge portion (1232), along the length direction of the convex portions (122), the edge portion (1232) is closer to the first base (121) than the middle portion (1231), along the direction perpendicular to the pressing surface (123), the distance between the middle portion (1231) and the second molding surface (13) is D1, the distance between at least part of the edge portion (1232) and the second molding surface (13) is D2, D1 < D2.

2. The sheet mold of claim 1, wherein, The convex portions (122) comprise a first segment (1233) and at least two second segments (1234), along the length direction of the convex portions (122), the second segments (1234) are closer to the first base (121) than the first segment (1233), the edge portion (1232) is located in the second segments (1234), the middle portion (1231) is located in the first segment (1233), along the closing direction of the mold core (11), the protruding distance of at least one of the second segments (1234) is smaller than that of the first segment (1233).

3. The sheet mold of claim 2, wherein, The convex portions (122) comprise two second segments (1234), along the length direction of the convex portions (122), one of the two second segments (1234) is located on one side of the first segment (1233), the other of the two second segments (1234) is located on the other side of the first segment (1233), along the closing direction of the mold core (11), the protruding distance of the second segments (1234) is smaller than that of the first segment (1233).

4. The sheet mold of claim 3, wherein, Along the length direction of the convex portions (122), the protruding distance of the second segments (1234) relative to the first base (121) gradually increases in the direction close to the first segment (1233).

5. A sheet mould as claimed in any one of claims 2 to 4, characterised in that, Along the length direction of the convex portions (122), the second segments (1234) comprise a connecting portion (1235) connected with the first segment (1233), the connection between the connecting portion (1235) and the first segment (1233) is smoothly transitioned.

6. The sheet mold according to any one of claims 1 to 5, wherein The mold core (11) includes a first mold core (14) and a second mold core (15), the first mold core (14) and the second mold core (15) are positionally coincident in a mold closing direction of the first mold core (14) and the second mold core (15), the first molding surface (12) is located on a face of the first mold core (14) close to the second mold core (15), and the second molding surface (13) is located on a face of the second mold core (15) close to the first mold core (14).

7. The sheet mold of claim 6, wherein, The mold core (11) includes a side peripheral portion (16) and a molding portion (17), the first molding surface (12) is located on the molding portion (17), the protruding portion (122) includes a first protruding portion (1236) and a second protruding portion (1237), the second protruding portion (1237) is closer to the side peripheral portion (16) than the first protruding portion (1236) in a direction perpendicular to the mold closing direction of the mold core (11), and the protruding distance of the first protruding portion (1236) relative to the first base portion (121) is greater than the protruding distance of the second protruding portion (1237) relative to the first base portion (121) in the mold closing direction of the mold core (11).

8. The sheet mold of claim 7, wherein, The second molding surface (13) is located on the molding portion (17), the second molding surface (13) includes a second base portion (131) and a recessed portion (132), the recessed portion (132) is recessed away from the first mold core (14) relative to the second base portion (131), the recessed portion (132) includes a first recessed portion (1321) and a second recessed portion (1322), the second recessed portion (1322) is closer to the side peripheral portion (16) than the first recessed portion (1321) in a direction perpendicular to the mold closing direction of the mold core (11), and the recessed distance of the first recessed portion (1321) relative to the second base portion (131) is greater than the recessed distance of the second recessed portion (1322) relative to the second base portion (131) in the mold closing direction of the mold core (11).

9. The sheet mold of claim 8, wherein, The first molding surface (12) includes a plurality of the protruding portion (122), the first base portion (121) is located between adjacent protruding portions (122), a first face is perpendicular to the mold closing direction of the mold core (11), the width of the first base portion (121) in the orthogonal projection of the first face is L1, the width of the protruding portion (122) in the orthogonal projection of the first face is L2, the difference between the protruding distances of the first protruding portion (1236) and the second protruding portion (1237) is H1 in the mold closing direction of the mold core (11), and the difference between the recessed distances of the first recessed portion (1321) and the second recessed portion (1322) is H2. L1 is greater than L2, and H1 is greater than H2, or L1 is less than L2, and H1 is less than H2.

10. A heat exchanger, characterized by The application relates to a plate (100) comprising a plurality of layers, the plate (100) comprising a spoiler (101) and a base plate (102), the spoiler (101) being convex relative to the base plate (102), the spoiler (101) comprising a first spoiler section (1011) and a second spoiler section (1012), the first spoiler section (1011) being closer to the base plate (102) than the second spoiler section (1012) along an extension direction of the spoiler (101), and the first spoiler section (1011) having a smaller convex distance than the second spoiler section (1012) along a stacking direction of the plate (100).

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