Heat exchanger

Abstract

The invention discloses a heat exchanger which comprises at least one first plate sheet and at least one second plate sheet, each first plate sheet comprises a first separation rib, and a first flange is distributed on at least one of a first area and a second area; the first flange is provided with a first end and a second end, the first end of the first flange is closer to the first separation rib than the second end in the width direction, and the second end of the first flange is farther from the third side than the first end in the length direction; at least one first flange is located in the first area, the minimum distance between the first flange and the first partition rib is smaller than the minimum distance between the first flange and the first side, and / or at least one first flange is located in the second area. The minimum distance between the first partition rib and the first partition rib is smaller than the minimum distance between the second partition rib and the second side. In this way, fluid impacting the first flange is guided in the direction away from the first separation rib, so that the uniformity of the fluid in the heat exchange channel is improved, and the heat exchange effect of the heat exchanger is improved.

Description

Technical Field

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

[0002] In the related art, a long strip of dividing ribs is provided on the heat exchange plate, one end of the dividing ribs is connected to one end of the heat exchange plate, and a circulation structure is provided between the other end of the dividing ribs and the other end of the heat exchange plate for the circulation of the heat exchange fluid, thereby dividing the heat exchange channel into a first heat exchange area and a second heat exchange area located on both sides of the dividing ribs, that is, forming a U-shaped loop to extend the flow path of the heat exchange fluid, thereby improving the heat exchange efficiency of the heat exchanger. However, since the heat exchange fluid tends to flow along the shortest path, the fluids in the first heat exchange area and the second heat exchange area tend to flow close to the dividing ribs, resulting in uneven distribution of the heat exchange fluid in the first heat exchange area and the second heat exchange area, affecting the heat exchange effect of the heat exchanger. Summary of the invention

[0003] In order to solve the above technical problems, the following technical solutions are provided:

[0004] A heat exchanger comprises at least one first plate and at least one second plate, wherein the first plate and the second plate are arranged opposite to each other.

[0005] The first plate comprises a first dividing rib, and the first dividing rib protrudes relative to the body of the first plate.

[0006] The first plate comprises a first inlet and a first outlet, and the first inlet and the first outlet are respectively located on both sides of the first dividing rib; the first plate has a third side and a fourth side along the length direction, and the first inlet and the first outlet are close to the third side of the first plate;

[0007] The first plate has a first side and a second side along the width direction,

[0008] defining a flow area between the first dividing rib and the first side of the first plate as a first area,

[0009] defining a flow area between the first dividing rib and the second side of the first plate as a second area;

[0010] At least one of the first area and the second area is provided with a first flange;

[0011] The first flange has a first end and a second end, and along the width direction of the first plate, the first end of the first flange is closer to the first dividing rib than the second end of the first flange, and along the length direction of the first plate, the second end of the first flange is farther from the third side of the first plate than the first end of the first flange;

[0012] At least one of the first flanges is located in the first area, and the minimum distance between the first flange and the first dividing rib is smaller than the minimum distance between the first flange and the first side of the first plate, and / or at least one of the first flanges is located in the second area, and the minimum distance between the first flange and the first dividing rib is smaller than the minimum distance between the first flange and the second side of the first plate.

[0013] In this way, since the first end of the first flange is closer to the first dividing rib than the second end of the first flange along the width direction of the first plate, and the second end of the first flange is farther away from the third side of the first plate than the first end of the first flange along the length direction of the first plate, that is, the first flange is inclined, when the fluid flows into the first area from the first inlet, it will be guided toward the direction of the flow path away from the first dividing rib when flowing through the first flange. In addition, since at least one of the first flanges is located in the first area, and the minimum distance between the first flange and the first dividing rib is smaller than the minimum distance between the first flange and the first side of the first plate, and / or at least one of the first flanges is located in the second area, and the minimum distance between the first flange and the first dividing rib is smaller than the minimum distance between the first flange and the second side of the first plate, that is, at least one of the first flanges is close to the first dividing rib, the first flange will guide the fluid flowing close to the first dividing rib toward the first side of the first plate and / or the second side of the first plate, thereby increasing the uniformity of the fluid in the heat exchange channel to improve the heat exchange effect of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the first plate in this application;

[0015] Figure 2 It is a top view schematic diagram of the first plate in this application;

[0016] Figure 3 It is a three-dimensional schematic diagram of another viewing angle of the first plate in this application;

[0017] Figure 4 is a three-dimensional schematic diagram of the second plate in this application;

[0018] Figure 5 It is a schematic elevational top view of the second plate in the present application;

[0019] Figure 6 It is a three-dimensional schematic diagram of another viewing angle of the second plate in this application;

[0020] Figure 7 An exploded schematic diagram of the first plate and the second plate in the present application;

[0021] Figure 8This is a three-dimensional schematic diagram of a first plate and a second plate stacked in the present application;

[0022] Fig. 9 It is a cross-sectional schematic diagram of a first plate and a second plate stacked in the present application;

[0023] Fig.10 for Fig. 9 A magnified schematic diagram of the middle area A;

[0024] Fig.11 for Fig. 9 A magnified schematic diagram of the middle area B;

[0025] Fig.12 It is a schematic top view of a first plate in another embodiment of the present application.

[0026] Reference numerals:

[0027] 100, first plate; 200, second plate; 300, heat exchange channel; 301, first heat exchange channel; 302, second heat exchange channel;

[0028] 102, first dividing rib; 103, first flange; 104, first groove; 105, first side; 106, second side; 107, third side; 108, fourth side; 1031, first end; 1032, second end;

[0029] 202, second dividing rib; 203, second flange; 204, second groove; 205, first side; 206, second side; 207, third side; 208, fourth side; 2031, first end; 2032, second end;

[0030] 1. First import; 2. First export; 3. Second export; 4. Second import; 5. First area; 6. Second area; 7. Third area; 8. Fourth area. DETAILED DESCRIPTION

[0031] The technical solution of the specific implementation mode is described below with reference to the accompanying drawings.

[0032] like Figure 1-11 As shown,

[0033] A heat exchanger includes a plurality of first plates 100 and a plurality of second plates 200 (here, plurality means at least one). In the present embodiment, the first plates 100 and the second plates 200 are stacked, and a heat exchange channel 300 is provided between adjacent first plates 100 and second plates 200. The heat exchange channel 300 includes a first heat exchange channel 301 and a second heat exchange channel 302 which are not connected to each other.

[0034] The first plate 100 includes a first dividing rib 102 protruding from the body of the first plate 100. Along the length direction of the first plate 100 (i.e., the first direction), the first plate 100 has a third side and a fourth side. One end of the first dividing rib 102 is connected to the third side 107 of the first plate 100, and the other end of the first dividing rib 102 is at a predetermined distance from the fourth side 108 of the first plate 100 (i.e., the distance between the other end of the first dividing rib 102 and the fourth side 108 of the first plate 100 is greater than the distance between the first dividing rib 102 and the fourth side 108 of the first plate 100). The first plate 100 includes a first inlet 1 and a first outlet 2, which are respectively located on both sides of the first dividing rib 102, and the first inlet 1 and the first outlet 2 are both connected to the first heat exchange channel 301, and in this embodiment, along the first direction, the first inlet 1 is closer to the third side 107 of the first plate 100 than the first flange 103 mentioned later, and the first outlet 2 is closer to the third side 107 of the first plate 100 than the first flange 103 mentioned later.

[0035] The first plate 100 has a first side and a second side along the width direction (i.e., the second direction), and the flow area between the first dividing rib 102 and the first side 105 of the first plate 100 is defined as the first area 5, and the flow area between the first dividing rib 102 and the second side 106 of the first plate 100 is defined as the second area 6; at least one of the first area 5 and the second area 6 is distributed with a first flange 103. In the present embodiment, the first flange 103 is distributed in the first area 5 and the second area 6, and the first flange 103 in the first area 5 is located between the wall corresponding to the first inlet 1 and the fourth side 108 of the first plate 100 along the length direction, and the first flange 103 in the second area 6 is located between the wall corresponding to the first outlet 2 and the fourth side 108 of the first plate 100 along the length direction. In this embodiment, the first flange 103 protrudes from the body of the first plate 100, and the direction in which the first flange 103 protrudes from the body of the first plate 100 is opposite to the direction in which the first dividing rib 102 protrudes from the body of the first plate 100. In some embodiments, the direction in which the first flange 103 protrudes from the body of the first plate 100 is the same as the direction in which the first dividing rib 102 protrudes from the body of the first plate 100.

[0036] The first flange 103 has a first end and a second end. Along the width direction of the first plate 100, the first end 1031 of the first flange 103 is closer to the first dividing rib 102 than the second end 1032 of the first flange 103, and along the length direction of the first plate 100, the second end 1032 of the first flange 103 is farther from the third side 107 of the first plate 100 than the first end 1031 of the first flange 103; at least one first flange 103 is located in the first area 5, and the minimum distance between the first flange 103 and the first dividing rib 102 is smaller than the minimum distance between the first flange 103 and the first side 105 of the first plate 100, and / or at least one first flange 103 is located in the second area 6, and the minimum distance between the first flange 103 and the first dividing rib 102 is smaller than the minimum distance between the first flange 103 and the second side 106 of the first plate 100.

[0037] In this way, since along the width direction of the first plate 100, the first end 1031 of the first flange 103 is closer to the first dividing rib 102 than the second end 1032 of the first flange 103, and along the length direction of the first plate 100, the second end 1032 of the first flange 103 is farther from the third side 107 of the first plate 100 than the first end 1031 of the first flange 103, that is, the first flange 103 is inclined, when the fluid flows from the first inlet 1 into the first area 5, the fluid flowing through the first flange 103 will be guided in the direction of the flow path away from the first dividing rib 102, and since at least one of the first flanges 103 is located in the first area 5, and the minimum distance between the first flange 103 and the first dividing rib 102 is The minimum distance between the first flange 103 and the first side 105 of the first plate 100 is smaller than the minimum distance between the first flange 103 and the first dividing rib 102, and / or at least one of the first flanges 103 is located in the second area 6, and the minimum distance between the first flange 103 and the first dividing rib 102 is smaller than the minimum distance between the first flange 103 and the second side 106 of the first plate 100, that is, at least one of the first flanges 103 is close to the first dividing rib 102, so that the first flange 103 will guide the fluid flowing close to the first dividing rib 102 toward the first side 105 of the first plate 100 and / or the second side 106 of the first plate 100, thereby increasing the uniformity of the fluid in the heat exchange channel 300 to improve the heat exchange effect of the heat exchanger.

[0038] From the first dividing rib 102 toward the first side 105 of the first plate 100, the density of the first flanges 103 located in the first area 5 gradually decreases; from the first dividing rib 102 toward the second side 106 of the first plate 100, the density of the first flanges 103 located in the second area 6 gradually decreases.

[0039] In this way, in the first area 5 and the second area 6, the flow resistance of the flow path close to both sides of the first dividing rib 102 is increased, and the flow path close to the first side 105 and the second side of the first plate 100 is reduced, thereby increasing the uniformity of the fluid distribution in the first area 5 and the second area 6, respectively, to improve the heat exchange performance of the heat exchanger.

[0040] In the first area 5, along the second direction, the first flange 103 is divided into a first row, a second row, ..., and an nth row from near to far relative to the first dividing rib 102, the first row is at a distance from the center line of the first dividing rib 102 along the second direction, the second row is at a distance from the center line of the first dividing rib 102 along the second direction, the third row is at a distance from the center line of the first dividing rib 102 along the second direction, ... the nth row is at a distance from the center line of the first dividing rib 102 along the second direction, and n-(n-1) is greater than ... greater than cb is greater than ba;

[0041] In the second area 6, along the second direction, the first flange 103 is divided into a first row, a second row, ..., and an nth row from near to far relative to the first dividing rib 102, the first row is at a distance from the center line of the first dividing rib 102 along the second direction, the second row is at a distance from the center line of the first dividing rib 102 along the second direction, the third row is at a distance from the center line of the first dividing rib 102 along the second direction, ... the nth row is at a distance from the center line of the first dividing rib 102 along the second direction, and n-(n-1) is greater than ... greater than cb is greater than ba;

[0042] In this way, in the first area 5 and the second area 6, the flow resistance of the flow path close to both sides of the first dividing rib 102 is increased, and the flow path close to the first side 105 and the second side of the first plate 100 is reduced, thereby increasing the uniformity of the fluid distribution in the first area 5 and the second area 6, respectively, to improve the heat exchange performance of the heat exchanger.

[0043] Along the first direction, the distance between any two adjacent first flanges 103 is x, and in the second direction, the farther away from the first dividing rib 102, the larger the value of x; thus, in the first area 5 and the second area 6, the farther away from the first dividing rib 102 along the second direction the first flanges 103 are, the more dispersed they are in the first direction, thereby reducing their corresponding density, so as to reduce the flow resistance of the fluid in the flow path away from the first dividing rib 102, thereby increasing the distribution of the corresponding fluid and improving the uniformity of the fluid distribution.

[0044] A first plane is defined, and the first plane is perpendicular to the first direction. Along the inclination direction of the first flange 103, the projection of the side wall corresponding to the flow channel between any two adjacent first flanges 103 on the first plane is covered by the projection of the other first flange 103 on the first plane; in this way, the fluid passing through the flow channel between two adjacent first flanges 103 in the inclination direction of the first flange 103 can continue to impact the other first flange 103, and be further guided in the direction of the flow path close to the first side 105 or the second side of the first plate 100, thereby increasing the distribution of the fluid in the flow path close to the first side 105 or the second side of the first plate 100.

[0045] Along the second direction, the minimum distance between the first flange 103 and the first side 105 of the first plate 100 is greater than the minimum distance between the first flange 103 and the first dividing rib 102 , and the minimum distance between the first flange 103 and the second side 106 of the first plate 100 is greater than the minimum distance between the first flange 103 and the first dividing rib 102 .

[0046] The second plate 200 includes a second dividing rib 202 protruding from the body of the second plate 200, and the protruding direction of the second dividing rib 202 is the same as the protruding direction of the first dividing rib 102. Along the length direction of the second plate 200 (i.e., the first direction), the second plate 200 has a third side and a fourth side. The third side 207 of the second plate 200 corresponds to the third side 107 of the first plate 100, and the fourth side 208 of the second plate 200 corresponds to the fourth side 108 of the first plate 100. One end of the second dividing rib 202 is aligned with the fourth side 208 of the second plate 200. The second plate 200 is connected, and the other end of the second dividing rib 202 has a predetermined distance from the third side 207 of the second plate 200. The second plate 200 includes a second outlet 3 and a second inlet 4. The second outlet 3 and the second inlet 4 are respectively located on both sides of the second dividing rib 202, and the second outlet 3 and the second inlet 4 are both connected to the second heat exchange channel 302. In this embodiment, along the first direction, the second inlet 4 is closer to the fourth side 208 of the second plate 200 than the second flange 203 mentioned later, and the second outlet 3 is closer to the fourth side 208 of the second plate 200 than the second flange 203 mentioned later.

[0047] The second plate 200 has a first side and a second side along the width direction (i.e., the second direction), and a flow area between the second dividing rib 202 and the first side 205 of the second plate 200 is defined as a third area 7, and a flow area between the second dividing rib 202 and the second side 206 of the second plate 200 is defined as a fourth area 8;

[0048] At least one of the third area 7 and the fourth area 8 is provided with a second flange 203; in this embodiment, the second flange 203 is distributed in the third area 7 and the fourth area 8, and the second flange 203 in the third area 7 is located between the wall corresponding to the second outlet 3 and the third side 207 of the second plate 200 along the length direction, and the second flange 203 in the fourth area 8 is located between the second inlet 4 and the fourth side 208 of the second plate 200 along the length direction. In this embodiment, the second flange 203 protrudes from the body of the second plate 200, and the direction in which the second flange 203 protrudes from the body of the second plate 200 is opposite to the direction in which the second dividing rib 202 protrudes from the body of the second plate 200, while in some embodiments, the direction in which the second flange 203 protrudes from the body of the second plate 200 is the same as the direction in which the second dividing rib 202 protrudes from the body of the second plate 200.

[0049] The second flange 203 has a first end and a second end. Along the width direction of the second plate 200, the first end 2031 of the second flange 203 is closer to the second dividing rib 202 than the second end 2032 of the second flange 203, and along the width direction of the second plate 200, the second end 2032 of the second flange 203 is farther from the fourth side 208 of the second plate 200 than the first end 2031 of the second flange 203; at least one second flange 203 is located in the third area 7, and the minimum distance between the second flange 203 and the second dividing rib 202 is smaller than the minimum distance between the second flange 203 and the second side 206 of the second plate 200, and / or at least one second flange 203 is located in the fourth area 8, and the minimum distance between the second flange 203 and the second dividing rib 202 is smaller than the minimum distance between the second flange 203 and the first side 205 of the second plate 200.

[0050] In this way, since along the length direction of the second plate 200, the first end 2031 of the second flange 203 is closer to the second dividing rib 202 than the second end 2032 of the second flange 203, and along the length direction of the second plate 200, the second end 2032 of the second flange 203 is farther away from the fourth side 208 of the second plate 200 than the first end 2031 of the second flange 203, that is, the second flange 203 is inclined, when the fluid flows from the second inlet 4 into the fourth area 8, the fluid flowing through the second flange 203 will be guided in the direction of the flow path away from the second dividing rib 202, and since at least one of the second flanges 203 is located in the third area 7, and the minimum distance between the second flange 203 and the second dividing rib 202 is The minimum distance between the second flange 203 and the second side 206 of the second plate 200 is smaller than the minimum distance between the second flange 203 and the second dividing rib 202, and / or at least one of the second flanges 203 is located in the fourth area 8, and the minimum distance between the second flange 203 and the second dividing rib 202 is smaller than the minimum distance between the second flange 203 and the first side 205 of the second plate 200, that is, at least one of the second flanges 203 is close to the second dividing rib 202, so that the second flange 203 will guide the fluid flowing close to the second dividing rib 202 toward the first side 205 of the second plate 200 and / or the second side of the second plate 200, thereby increasing the uniformity of the flow in the heat exchange channel 300 to improve the heat exchange effect of the heat exchanger.

[0051] The first flange 103 protrudes from one side of the main body of the first plate 100, and a first groove 104 is formed on the other side of the main body of the first plate 100; the second flange 203 protrudes from one side of the main body of the second plate 200, and a second groove 204 is formed on the other side of the main body of the second plate 200; along the direction perpendicular to the plane where the main body of the first plate 100 is located, the projection of the wall corresponding to the second groove 204 on the main body of the first plate 100 has no intersection with the first flange 103, and the projection of the wall corresponding to the first groove 104 on the main body of the second plate 200 has no intersection with the second flange 203.

[0052] In this way, the existence of the first groove 104 and the second groove 204 increases the area of ​​the wall corresponding to the first heat exchange channel 301 and the second heat exchange channel 302, that is, increases the heat exchange area, thereby improving the heat exchange efficiency. Since the projection of the wall corresponding to the second groove 204 on the body of the first plate 100 in the direction perpendicular to the plane where the body of the first plate 100 is located does not intersect with the first flange 103, and the projection of the wall corresponding to the first groove 104 on the body of the second plate 200 does not intersect with the second flange 203, so that the first flange 103 can be connected to the surface of the body of the second plate 200, and the second flange 203 can be connected to the surface of the body of the first plate 100, specifically by welding, so that the strength between the first plate 100 and the second plate 200 is increased, and when the fluid passes through, the extrusion deformation of the first plate 100 and the second plate 200 caused by the pressure difference between the upper and lower sides of the first plate 100 and the second plate 200 is reduced.

[0053] From the second dividing rib 202 toward the first side 205 of the second plate 200, the density of the second flanges 203 located in the third area 7 gradually decreases; from the second dividing rib 202 toward the second side 206 of the second plate 200, the density of the second flanges 203 located in the fourth area 8 gradually decreases. In this way, in the third area 7 and the fourth area 8, the flow resistance of the flow path close to both sides of the second dividing rib 202 is increased, and the flow path close to the first side 205 and the second side of the second plate 200 is reduced, thereby increasing the uniformity of the fluid distribution in the third area 7 and the fourth area 8, respectively, to improve the heat exchange performance of the heat exchanger.

[0054] In the third area 7, along the second direction, the second flange 203 is divided into a first row, a second row, ..., and an nth row from near to far relative to the second dividing rib 202, the first row is at a distance from the center line of the second dividing rib 202 along the second direction, the second row is at a distance from the center line of the second dividing rib 202 along the second direction, the third row is at a distance from the center line of the second dividing rib 202 along the second direction, ... the nth row is at a distance from the center line of the second dividing rib 202 along the second direction, and n-(n-1) is greater than ... greater than cb is greater than ba;

[0055] In the fourth area 8, along the second direction, the second flange 203 is divided into the first row, the second row,... and the nth row from near to far relative to the second dividing rib 202, the first row is at a distance from the center line of the second dividing rib 202 along the second direction, the second row is at a distance from the center line of the second dividing rib 202 along the second direction, the third row is at a distance from the center line of the second dividing rib 202 along the second direction,... the nth row is at a distance from the center line of the second dividing rib 202 along the second direction, and n-(n-1) is greater than... greater than cb greater than ba.

[0056] In this way, in the third area 7 and the fourth area 8, the flow resistance of the flow path close to both sides of the second dividing rib 202 is increased, and the flow path close to the first side 205 and the second side of the second plate 200 is reduced, thereby increasing the uniformity of the fluid distribution in the third area 7 and the fourth area 8, respectively, to improve the heat exchange performance of the heat exchanger.

[0057] Along the first direction, the distance between any two adjacent second flanges 203 is y, and in the second direction, the farther away from the second dividing rib 202, the larger the value of y; thus, in the third area 7 and the fourth area 8, the second flanges 203 that are farther away from the second dividing rib 202 along the second direction are more dispersed in the first direction, thereby reducing their corresponding density, so as to reduce the flow resistance of the fluid in the flow path away from the second dividing rib 202, thereby increasing the distribution of the corresponding fluid and improving the uniformity of the fluid distribution.

[0058] Along the inclination direction of the second flange 203, the projection of the side wall corresponding to the flow channel between any two adjacent second flanges 203 on the first plane is covered by the projection of the other second flange 203 on the first plane; in this way, the fluid passing through the flow channel between two adjacent second flanges 203 in the inclination direction of the second flange 203 can continue to impact the other second flange 203, and be further guided in the direction of the flow path close to the first side 205 or the second side of the second plate 200, thereby increasing the distribution of the fluid in the flow path close to the first side 205 or the second side of the second plate 200.

[0059] The minimum distance between the second flange 203 and the second side 206 of the second plate 200 is greater than the minimum distance between the second flange 203 and the second dividing rib 202 ; the minimum distance between the second flange 203 and the second side 206 of the second plate 200 is greater than the minimum distance between the second flange 203 and the second dividing rib 202 .

[0060] Fig.12 Another embodiment is shown. In this embodiment,

[0061] The first flange 103 is distributed on both sides of the first dividing rib 102; along the second direction, the first plate 100 has a first side and a second side; the flow area between the first dividing rib 102 and the first side 105 of the first plate 100 is defined as the first area 5, and the flow area between the first dividing rib 102 and the second side 106 of the first plate 100 is defined as the second area 6, and the surface area of ​​the first flange 103 located in the first area 5 gradually decreases from the first dividing rib 102 toward the first side 105 and the second side of the first plate 100 respectively.

[0062] In this way, in the first area 5 and the second area 6, the flow resistance of the flow path close to the two sides of the first dividing rib 102 is increased, and the flow resistance of the flow path close to the first side 105 and the second side of the first plate 100 and the flow resistance of the flow path close to the first side 205 and the second side of the second plate 200 are reduced, thereby increasing the uniformity of the fluid distribution in the first area 5 and the second area 6, respectively, to improve the heat exchange performance of the heat exchanger.

[0063] It should be noted that: although this specification has described the present application in detail with reference to the above-mentioned implementation methods, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify, combine or replace the present application with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A heat exchanger, comprising at least one first plate (100) and at least one second plate (200), wherein the first plate (100) and the second plate (200) are arranged opposite to each other, characterized in that: The first plate (100) comprises a first dividing rib (102), wherein the first dividing rib (102) protrudes relative to the body of the first plate (100). The first plate (100) comprises a first inlet (1) and a first outlet (2), wherein the first inlet (1) and the first outlet (2) are respectively located on two sides of the first dividing rib (102); The first plate (100) has a first side and a second side along the width direction, A flow area between the first dividing rib (102) and the first side (105) of the first plate (100) is defined as a first area (5), defining a flow area between the first dividing rib (102) and the second side (106) of the first plate (100) as a second area (6); A first flange (103) is distributed in at least one of the first region (5) and the second region (6); the first plate (100) has a third side and a fourth side along the length direction, and in the length direction of the first plate (100), the first inlet (1) and the first outlet (2) are closer to the third side (107) of the first plate (100) than the first flange (103); The first flange (103) has a first end and a second end. Along the width direction of the first plate (100), the first end (1031) of the first flange (103) is closer to the first dividing rib (102) than the second end (1032) of the first flange (103). Along the length direction of the first plate (100), the second end (1032) of the first flange (103) is farther from the third side (107) of the first plate (100) than the first end (1031) of the first flange (103). At least one of the first flanges (103) is located in the first area (5), and the minimum distance between the first flange (103) and the first dividing rib (102) is smaller than the minimum distance between the first flange (103) and the first side (105) of the first plate (100), and / or at least one of the first flanges (103) is located in the second area (6), and the minimum distance between the first flange (103) and the first dividing rib (102) is smaller than the minimum distance between the first flange (103) and the second side (106) of the first plate (100).

2. A heat exchanger according to claim 1, characterized in that: From the first dividing rib (102) toward the first side (105) and the second side (106) of the first plate (100), the density of the first flange (103) located in the first area (5) and the second area (6) gradually decreases.

3. A heat exchanger according to claim 2, characterized in that: Along the second direction, the first flanges (103) located in the first area (5) and the second area (6) are respectively divided into a first row, a second row, ... and an nth row from near to far relative to the first dividing rib (102); Define that the distance between the first row and the center line of the first dividing rib (102) along the second direction is a, the distance between the second row and the center line of the first dividing rib (102) along the second direction is b, the distance between the third row and the center line of the first dividing rib (102) along the second direction is c,..., the distance between the nth row and the center line of the first dividing rib (102) along the second direction is n, and n-(n-1) is greater than... greater than cb greater than ba.

4. A heat exchanger according to claim 1, 2 or 3, characterized in that: Along the first direction, the distance between any two adjacent first flanges (103) is x, and in the second direction, the farther away from the first dividing rib (102), the larger the value of x.

5. A heat exchanger according to claim 1, 2 or 3, characterized in that: From the first dividing rib (102) toward the first side (105) and the second side (106) of the first plate (100), the surface area of ​​the first flange (103) located in the first region (5) and the second region (6) gradually decreases.

6. A heat exchanger according to any one of claims 1 to 4, characterized in that: A first plane is defined, wherein the first plane is perpendicular to the first direction, Along the inclination direction of the first flange (103), the projection of the side wall corresponding to the flow channel between any two adjacent first flanges (103) on the first plane can be covered by the projection of at least one of the first flanges (103) on the first plane.

7. A heat exchanger according to any one of claims 1 to 4, characterized in that: Along the second direction, A minimum distance between the first flange (103) and the first side (105) of the first plate (100) is greater than a minimum distance between the first flange (103) and the first dividing rib (102); A minimum distance between the first flange (103) and the second side (106) of the first plate (100) is greater than a minimum distance between the first flange (103) and the first dividing rib (102).

8. A heat exchanger according to any one of claims 1 to 3, characterized in that: The second plate (200) comprises a second dividing rib (202), wherein the second dividing rib (202) protrudes relative to the body of the second plate (200). The second plate (200) comprises a second outlet (3) and a second inlet (4), the second outlet (3) and the second inlet (4) are respectively located on two sides of the second dividing rib (202); the second plate (200) has a third side and a fourth side along the length direction, the second outlet (3) and the second inlet (4) are close to the fourth side (208) of the second plate (200); the third side (207) and the fourth side (208) of the second plate (200) correspond to the third side (107) and the fourth side (208) of the first plate (100), respectively; The second plate (200) has a first side and a second side along a width direction, and the first side (205) and the second side (206) of the second plate (200) correspond to the first side (105) and the second side (106) of the first plate (100), respectively; A flow area between the second dividing rib (202) and the first side (205) of the second plate (200) is defined as a third area (7), defining a flow area between the second dividing rib (202) and the second side (206) of the second plate (200) as a fourth area (8); At least one of the third area (7) and the fourth area (8) is provided with a second flange (203); The second flange (203) has a first end and a second end; along the width direction of the second plate (200), the first end (1031) of the second flange (203) is closer to the second dividing rib (202) than the second end (1032) of the second flange (203); along the width direction of the second plate (200), the second end (1032) of the second flange (203) is farther from the fourth side (208) of the second plate (200) than the first end (1031) of the second flange (203); At least one of the second flanges (203) is located in the third area (7), and the minimum distance between the second flange (203) and the second dividing rib (202) is smaller than the minimum distance between the second flange (203) and the second side (206) of the second plate (200), and / or at least one of the second flanges (203) is located in the fourth area (8), and the minimum distance between the second flange (203) and the second dividing rib (202) is smaller than the minimum distance between the second flange (203) and the first side (205) of the second plate (200).

9. A heat exchanger according to claim 8, characterized in that: The first plate (100) and the second plate (200) are stacked; The first flange (103) protrudes from one side of the body of the first plate (100), and a first groove (104) is formed on the other side of the first plate (100); The second flange (203) protrudes from one side of the body of the second plate (200), and a second groove (204) is formed on the other side of the second plate (200); Along a direction perpendicular to the plane where the main body of the first plate (100) is located, the projection of the wall corresponding to the second groove (204) on the main body of the first plate (100) has no intersection with the first flange (103), and the projection of the wall corresponding to the first groove (104) on the second plate (200) has no intersection with the second flange (203).

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