Heat exchanger

Abstract

The utility model relates to a kind of heat exchanger, and heat exchanger includes support and heat exchange core body;Along the thickness direction X of heat exchange core body, one end of heat exchange core body has end plate, and the other end of heat exchange core body has bottom plate;Support includes first support plate;Heat exchange core body further has multiple side walls, and side wall between end plate and bottom plate;One side of one side wall in multiple side walls has first support plate;One end of first support plate is fixedly connected with end plate, and the other end of first support plate is fixedly connected with bottom plate;Heat exchanger has support and heat exchange core body;Support includes first support plate, and heat exchange core body has multiple side walls, and one side of one side wall in multiple side walls has first support plate, and heat exchange core body is fixedly connected with first support plate;Relative to existing back-and-forth support, heat exchanger supports heat exchange core body by the first support plate of support, and the overall weight of heat exchanger can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology, and in particular to a heat exchanger for a refrigeration system. Background Technology

[0002] Plate heat exchangers consist of multiple plates stacked together, with inter-plate channels formed between adjacent plates for fluid flow. Two fluids can flow on opposite sides of the plates to achieve heat exchange between the plates. Utility Model Content

[0003] In related technologies, plate heat exchangers are mounted on vehicle bodies via brackets; plate heat exchangers have heat exchange cores with multiple sidewalls, and existing brackets are U-shaped brackets that wrap around the multiple sidewalls of the heat exchange cores, resulting in a relatively heavy overall heat exchanger.

[0004] Therefore, it is necessary to provide a heat exchanger that addresses the above problems and aims to reduce the overall weight of the heat exchanger.

[0005] On the one hand, the technical solution adopted by this utility model is as follows:

[0006] A heat exchanger includes a support and a heat exchange core; along the thickness direction X of the heat exchange core, one end of the heat exchange core has an end plate and the other end of the heat exchange core has a bottom plate;

[0007] The bracket includes a first support plate; the heat exchange core also has multiple sidewalls, with the sidewalls located between the end plate and the bottom plate; one side of one of the multiple sidewalls has the first support plate.

[0008] One end of the first support plate is fixedly connected to the end plate, and the other end of the first support plate is fixedly connected to the base plate.

[0009] The heat exchanger of this application has a bracket and a heat exchange core; the bracket includes a first support plate, the heat exchange core has multiple side walls, one side of one of the multiple side walls has the first support plate, and the heat exchange core is fixedly connected to the first support plate; compared with the existing U-shaped bracket, the heat exchanger supports the heat exchange core through the first support plate of the bracket, which can reduce the overall weight of the heat exchanger. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the heat exchanger of this utility model;

[0011] Figure 2 for Figure 1 Another structural diagram from a different perspective;

[0012] Figure 3 for Figure 1A schematic diagram of the heat exchange core structure in the diagram;

[0013] Figure 4 for Figure 1 A schematic diagram of the structure after the heat exchange core and the first connecting component are assembled.

[0014] Figure 5 for Figure 4 A schematic diagram of the structure of the first connector in the middle;

[0015] Figure 6 for Figure 1 A schematic diagram of the structure of the support;

[0016] Figure 7 for Figure 1 A schematic diagram of the heat exchange core and end plate after assembly.

[0017] Figure 8 for Figure 1 A structural diagram from a third-person perspective;

[0018] Figure 9 for Figure 1 A cross-sectional view;

[0019] Figure 10 for Figure 9 A magnified structural diagram of point A in the middle.

[0020] Reference numerals: 1. Heat exchanger; 2. Support; 3. Heat exchange core; 4. End plate; 5. Base plate; 6. First support plate; 7. First side wall; 8. First connector; 9. Positioning protrusion; 10. Positioning hole; 11. Base plate portion; 12. Bending plate portion; 13. First support plate body; 14. First sub-support plate portion; 15. First support rib; 16. Second support rib; 17. Lug; 18. Bending protrusion; 19. End plate body; 20. First extension plate portion; 21. Second extension plate portion; 22. 23. First protrusion; 24. Second protrusion; 25. First convex part; 26. Second convex part; 27. Lug body; 28. First reinforcing rib; 29. ​​Second reinforcing rib; 30. Third reinforcing rib; 31. Second sidewall; 32. Second support plate; 33. Groove; 34. Second support plate body; 35. Third extension plate part; 36. Limiting post; 37. Second sub-support plate part; 38. Shock-absorbing pad; 49. Fourth reinforcing rib; 40. Third sub-support plate part; 41. Sixth reinforcing rib; 42. Sidewall. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0022] This embodiment discloses a heat exchanger 1, such as Figure 1 As shown, the heat exchanger 1 includes a heat exchange core 3, which has inter-plate channels. The plates forming the inter-plate channels include first plates and second plates, which are alternately stacked. The inter-plate channels include multiple inter-plate channels and multiple inter-plate flow channels, which are isolated from each other and arranged alternately. Along the stacking direction of the plates, there is an inter-plate channel between the first plate and one of its adjacent second plates, and an inter-plate flow channel between the first plate and another adjacent second plate. The fluid in the inter-plate channels and the fluid in the inter-plate flow channels exchange heat through the plates. It should be noted that the fluid in the inter-plate channels and the fluid in the inter-plate flow channels can be the same fluid or two different fluids.

[0023] like Figure 1 , Figure 2 and Figure 7 As shown, the heat exchanger 1 includes a support 2 and a heat exchange core 3. The support 2 can be made of plastic, steel, or aluminum. The heat exchange core 3 is mounted on the support 2 and then mounted on the vehicle body via the support 2. Along the thickness direction X of the heat exchange core 3, i.e., the stacking direction of the plates, one end of the heat exchange core 3 has an end plate 4, which is welded to the heat exchange core 3. The other end of the heat exchange core 3 has a bottom plate 5. The support 2 includes a first support plate 6. The heat exchange core 3 also has multiple sidewalls 42, which are located between the end plate 4 and the bottom plate 5. One side of one of the sidewalls 42 has the first support plate 6. One end of the first support plate 6 is fixedly connected to the end plate 4, and the other end of the first support plate 6 is fixedly connected to the bottom plate. The heat exchange core has multiple sidewalls, and one side of one of the sidewalls has the first support plate. The heat exchange core is fixedly connected to the first support plate. Compared with the existing U-shaped support, the support uses the first support plate to support the heat exchange core, which can reduce the overall weight of the heat exchanger.

[0024] In this embodiment, the sidewall 42 includes a first sidewall 7 and a second sidewall 30, which are adjacent to each other. The first support plate 6 is located on one side of the first sidewall 7. The first sidewall 7 has a first direction Y, which is perpendicular to the thickness direction X of the heat exchange core 3. The second sidewall 30 has a second direction Z, which is perpendicular to the thickness direction X of the heat exchange core 3. The first sidewall 7 extends along the first direction Y for a length of L1, the second sidewall 30 extends along the second direction Z for a length of L2, and the thickness of the first support plate 6 is t1. L1, L2, and t1 satisfy the following relationship: L1 > L2, and 35 ≤ L1 / t1 ≤ 70. Thus, when actually assembling the heat exchange core 3, the heat exchange core 3 is arranged according to... Figure 8As shown, when L1, L2 and t1 satisfy the following relationship: L1>L2, and 35≤L1 / t1≤70, the bracket 2 provides good support for the heat exchange core 3 while meeting the requirements of lightweight design.

[0025] In this embodiment, one of the end plate 4 and the bottom plate 5 is snapped into the first support plate 6; the other of the end plate 4 and the bottom plate 5 is fixedly connected to the first support plate 6; the fixed connection includes riveting, welding, or threaded connection. For example, the end plate is snapped into the first support plate 6, and the bottom plate 5 is threaded into the first support plate 6; the snap-fit ​​connection at one end of the first support plate 6 improves rapid positioning during installation, facilitates the subsequent fixed connection, increases production cycle time, and optimizes the processing steps. Furthermore, a gap exists between the sidewall 42 of the heat exchange core 3 and the first support plate 6, thereby reducing contact friction between the sidewall 42 and the first support plate 6.

[0026] In this embodiment, the base plate 5 is fixed with a first connecting member 8, wherein the fixed connection includes welding; for example, the first connecting member 8 is elongated, one of the first connecting member 8 and the base plate 5 has a positioning protrusion 9, and the other of the first connecting member 8 and the base plate 5 has a positioning hole 10, with the positioning protrusion 9 embedded in the positioning hole 10. In this way, the first connecting member 8 and the base plate 5 are pre-positioned through the positioning hole 10 and the positioning protrusion 9, making the assembly of the base plate 5 and the first support plate 6 more convenient, and at the same time reducing the shaking of the bracket 2 and the heat exchanger 1 during vibration, and reducing damage caused by friction.

[0027] For example, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the first connector 8 includes a base plate portion 11 and a bent plate portion 12. The base plate portion 11 is welded to the bottom plate 5. The bottom plate 5 has multiple positioning protrusions and multiple positioning through holes. The positioning protrusions are inserted into the positioning through holes, and the positioning protrusions and positioning through holes cooperate to pre-fix the bottom plate 5 and the base plate portion 11, facilitating the welding of the base plate portion 11 and the bottom plate 5. The bent plate portion 12 is bent relative to the base plate portion 11 in a direction away from the heat exchange core 3, and the bent plate portion 12 does not contact the bottom plate 5, which is used to avoid the flange of the bottom plate 5. The bent plate portion 12 has multiple positioning protrusions 9, which extend in a direction away from the heat exchange core 3 along the thickness direction X of the heat exchange core 3.

[0028] like Figures 2-6As shown, the first support plate 6 includes a first support plate body 13 and a first sub-support plate portion 14. The first sub-support plate portion 14 is also elongated and extends towards the heat exchange core 3 relative to the first support plate body 13. The first sub-support plate portion 14 has multiple positioning holes 10 and is also elongated, which can further reduce the overall weight and production cost of the heat exchanger 1. The positioning protrusion 9 of the bent plate portion 12 is embedded in the positioning hole 10 of the first sub-support plate portion 14, thereby realizing the snap-fit ​​between the first connector 8 and the first sub-support plate portion 14. During the actual assembly of the bracket 2 and the heat exchange core 3, firstly, the base plate portion 11 of the first connector 8 achieves the pre-positioning of the first connector 8 and the heat exchange core 3 through the cooperation of the positioning protrusion and the positioning through hole. The base plate portion 11 and the bottom plate 5 are then welded together, and the first connector 8 is then welded onto the bottom plate 5. Next, the positioning protrusion 9 of the first connector 8 is embedded into the positioning hole 10 of the bracket 2 to achieve the pre-positioning of the bracket 2 and the heat exchange core 3. Then, the bracket 2 and the end plate 4 are fixedly connected by fasteners, and the heat exchange core 3 is then installed on the bracket 2.

[0029] like Figure 2 , Figure 6 , Figure 9 and Figure 10 As shown, the first sub-support plate portion 14 has a plurality of first support ribs 15 on the side near the base plate 5. These ribs are spaced apart along the length of the first sub-support plate portion 14, protruding towards the base plate 5, and there is a gap between the first support ribs 15 and the base plate 5. This gap between the first support ribs 15 and the base plate 5 provides a certain clearance between the heat exchanger 1 and the first sub-support plate portion 14, reducing contact friction. Furthermore, the first sub-support plate portion 14 has a plurality of second support ribs 16 on the side away from the base plate 5. These ribs are spaced apart along the length of the first sub-support plate portion 14, protruding away from the base plate 5. The second support ribs 16 increase the local strength of the support 2 located on the first sub-support plate portion 14, to some extent compensating for the strength reduction caused by the reduction in material of the support 2.

[0030] like Figure 1 , Figure 6 and Figure 7As shown, the first support plate 6 also has at least one lug 17, which extends in the thickness direction X of the heat exchange core 3 away from the main body 13 of the first support plate; the end plate 4 has at least one bent protrusion 18, which extends in the thickness direction X of the heat exchange core 3 away from the heat exchange core 3, and the bent protrusion 18 and the lug 17 are fixedly connected by fasteners. Thus, relative to the overall extension of the edge of the first support plate 6 and the overall extension of the edge of the end plate 4, the lug 17 and the bent protrusion 18 are formed by partial extension, and the lug 17 and the bent protrusion 18 are fixedly connected, which can further reduce the overall weight of the heat exchanger 1. The number of lugs 17 can be two, three or more, and correspondingly, the number of bent protrusions 18 can be two, three or more. The bent protrusion 18 is fixedly connected to the end plate 4 or is an integral structure. When the bent protrusion 18 and the end plate 4 are an integral structure, the bent protrusion 18 is bent in the direction away from the heat exchange core 3.

[0031] More detailed, such as Figure 1 , Figure 6 and Figure 7 As shown, the end plate 4 includes an end plate body 19 and a first extension plate portion 20. The first extension plate portion 20 is fixedly connected to the end plate body 19 or is an integral structure thereon. The first extension plate portion 20 extends in a direction away from the end plate body 19, and the plate surface of the first extension plate portion 20 is parallel to the plate surface of the end plate body 19. The first extension plate portion 20 protrudes relative to the heat exchange core 3. The first support plate 6 also has a second extension plate portion 21. The first support plate body 13 and the second extension plate portion 21 are fixedly connected to each other or are an integral structure thereon. The second extension plate portion 21 extends in a direction away from the first support plate body 13. The surface of section 21 is parallel to the surface of the first support plate body 13. The bending protrusion includes a first protrusion 22 and a second protrusion 23. The end plate body 19 has two first protrusions 22, which extend away from the bottom plate 5 along the thickness direction of the heat exchange core 3. The first protrusions 22 are fixedly connected to the lugs 17 of the bracket 2 by fasteners. The second extension plate section 21 has one second protrusion 23, which extends towards the bottom plate 5 along the thickness direction of the heat exchange core 3. That is, the extension directions of the first protrusions 22 and the second protrusions 23 are opposite. The second protrusion 23 is detachably connected to the bracket 2 by fasteners. In this way, the first extension plate section 20 protrudes relative to the heat exchange core 3, and the second extension plate section 21 of the first support plate 6 is connected to the second protrusion 23 of the first extension plate section 20 by fasteners, which can increase the local strength of the bracket 2.

[0032] In this embodiment, as Figure 1 , Figure 6 and Figure 7As shown, the lug 17 includes a first protrusion 24 and a second protrusion 25; the first support plate body 13 has two first protrusions 24, which are fixedly connected to the first support plate body 13 or are integral structures; along the thickness direction of the heat exchange core 3, the first protrusions 24 extend in a direction away from the first support plate body 13, the second extension plate 21 has a second protrusion 25, which extends in a direction away from the first support plate body 13, the first protrusions 24 and the first protrusion 22 are detachably connected by fasteners, and the second protrusion 25 and the second protrusion 23 are detachably connected by fasteners.

[0033] like Figure 1 , Figure 6 and Figure 7 As shown, the lug 17 includes a lug body 26; the lug 17 has multiple first reinforcing ribs 27, which are fixedly connected to the lug body 26 or are integrally formed, and the first reinforcing ribs 27 protrude relative to the lug body 26. The first reinforcing ribs 27 extend along the thickness direction X of the heat exchange core 3. Thus, the provision of the first reinforcing ribs 27 can increase the local strength of the support 2 at the lug 17, and to a certain extent compensate for the strength reduction caused by the reduction in the material of the support 2.

[0034] like Figures 1-3 As shown, the first support plate 6 also has a plurality of second reinforcing ribs 28, which are spaced apart along the thickness direction of the heat exchange core 3. The second reinforcing ribs 28 protrude relative to the main body 13 of the first support plate and are located at the center of the main body 13 along the thickness direction X of the heat exchange core 3. Thus, the second reinforcing ribs 28 are positioned at stress concentration points, which can disperse stress and improve the strength of the support 2. Furthermore, the placement of second reinforcing ribs 28 at each location relative to the main body 13, with the second reinforcing ribs 28 positioned at the center of the main body 13, also achieves a weight reduction effect. The first support plate 6 also has a third reinforcing rib 29, which protrudes relative to the main body 13 of the first support plate. The third reinforcing rib 29 is located within the main body 13 of the first support plate and extends along the length direction of the heat exchange core 3, and is close to the lug 17. This increases the local strength of the first support plate 6 near the lug 17.

[0035] like Figures 1-6As shown, the heat exchange core 3 is generally rectangular in shape, having a length direction, a width direction, and a height direction. The height direction is the thickness direction of the heat exchange core 3. The length of the heat exchange core 3 along the length direction is greater than its length along the width direction. The heat exchanger 1 also includes a second sidewall 30; the first sidewall 7 and the second sidewall 30 are adjacent; the first sidewall 7 extends along the length direction of the heat exchange core 3, and the second sidewall 30 extends along the width direction of the heat exchange core 3. The support 2 also includes a second support plate 31, with an included angle between the first support plate 6 and the second support plate 31. The first support plate 6 and the second support plate 31 are fixedly connected or are an integral structure; the cross-section of the support 2 is generally L-shaped. The first support plate 6 extends along the length direction of the heat exchange core 3, and the second support plate 31 extends along the width direction of the heat exchange core 3. The second support plate 31 has a first side and a second side, with the first side close to the heat exchange core 3 and the second side away from the heat exchange core 3. The second side of the second support plate 31 has multiple grooves 32, which are arranged at intervals. Thus, the groove 32 can increase the strength of the bracket 2, and to a certain extent, compensate for the reduction in strength caused by the reduction in the material of the bracket 2.

[0036] In this embodiment, as Figures 1-6 As shown, the first support plate 6 is located on one side of the first sidewall 7, and the second support plate 31 is located on one side of the second sidewall 30. The second support plate 31 is fixedly connected to the first support plate 6 or is an integral structure. The projected area of ​​the second support plate 31 on the first sidewall 7 is defined as S1, and the area of ​​the first sidewall 7 is defined as S2. S1 and S2 satisfy the following relationship: 1 / 3S2≤S1≤S2. In this way, the weight of the second support plate 31 can be reduced, thereby reducing the overall weight of the heat exchange core 3.

[0037] like Figure 1 As shown, the second support plate 31 includes a second support plate body 33, and the second support plate 31 has a third extension plate portion 34. Along the thickness direction of the heat exchange core 3, the third extension plate portion 34 extends away from the heat exchange core 3 relative to the second support plate body 33, and the third extension plate portion 34 protrudes relative to the first support plate body 13. The second support plate 31 has limiting posts 35. The limiting posts 35 include a first limiting post 35 and a second limiting post 35. The first limiting post 35 is disposed on the second support plate body 33, and the first limiting post 35 is fixedly connected to the second support plate body 33 or is an integral structure. The second limiting post 35 is disposed on the third extension plate portion 34, and the second limiting post 35 is fixedly connected to the third extension plate portion 34 or is an integral structure. The bracket 2 is installed by inserting the first limiting post 35 and the second limiting post 35 into the hand parts of the vehicle body, thereby enabling the heat exchanger 1 to be installed on the vehicle body. There are multiple grooves 32 between the first limiting post 35 and the second limiting post 35. The multiple grooves 32 are arranged at intervals, which can increase the local strength of the second support plate 31 located in the middle.

[0038] like Figure 1 As shown, the first support plate 6 also has a second sub-support plate portion 36, which is fixedly connected to the first support plate body 13 or is an integral structure. The second sub-support plate portion 36 extends in a direction away from the heat exchange core 3, and has a shock-absorbing pad 37. Thus, when the heat exchanger 1 is applied to a vehicle, the shock-absorbing pad 37 can absorb high-frequency vibrations during vehicle operation, thereby increasing the service life of the bracket 2.

[0039] In this embodiment, as Figure 1 As shown, the connection between the second sub-support plate portion 36 and the first support plate body 13 has multiple fourth reinforcing ribs 38. The multiple fourth reinforcing ribs 38 are arranged at intervals along the thickness direction of the heat exchange core 3, which can increase the connection strength between the second sub-support plate portion 36 and the first support plate body 13, thereby increasing the strength of the support 2. At the same time, the connection between the second sub-support plate portion 36 and the second extension plate portion 21 has multiple fifth reinforcing ribs. The multiple fifth reinforcing ribs are arranged at intervals along the thickness direction of the heat exchange core 3, which can increase the connection strength between the second sub-support plate portion 36 and the second extension plate portion 21, thereby further increasing the strength of the support 2.

[0040] In this embodiment, as Figure 1 As shown, the first support plate 6 also has a third sub-support plate portion 40. The third sub-support plate portion 40 is close to the second support plate 31. Along the thickness direction of the heat exchange core 3, the third sub-support plate portion 40 extends in a direction away from the main body 13 of the first support plate. The third sub-support plate portion 40 is fixedly connected to the third extension plate portion 34 or is an integral structure. In this way, the main body of the second support plate 31 is connected to the main body 13 of the first support plate, while the third extension plate portion 34 is separate from the main body 13 of the first support plate and has relatively weak strength. By setting the third sub-support plate portion 40 and fixing the third sub-support plate portion 40 to the third extension plate portion 34 or making them an integral structure, the local strength of the bracket 2 located at the third extension plate portion 34 can be increased.

[0041] like Figures 1-6 As shown, the third sub-support plate portion 40 has a plurality of sixth reinforcing ribs 41 on the side near the heat exchange core 3. These sixth reinforcing ribs 41 are spaced apart along the thickness direction of the heat exchange core 3. One end of each sixth reinforcing rib 41 is fixedly connected to the third sub-support plate portion 40 or is an integral part thereof, and the other end extends to the third extension plate portion 34 and is fixedly connected to or an integral part thereof. Thus, the provision of the sixth reinforcing ribs 41 increases the local strength of the connection between the third sub-support plate portion 40 and the third extension plate portion 34. Simultaneously, the third sub-support plate portion 40 has a seventh reinforcing rib on the side away from the heat exchange core 3, further enhancing the local strength of the support 2 located within the third sub-support plate portion 40.

[0042] 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.

[0043] The above-described embodiments are merely examples of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications without departing from the concept of this utility model, and these modifications all fall within the protection scope of this utility model.

Claims

1. A heat exchanger, characterized in that, It includes a support (2) and a heat exchange core (3); along the thickness direction X of the heat exchange core (3), one end of the heat exchange core (3) has an end plate (4), and the other end of the heat exchange core (3) has a bottom plate (5); The bracket (2) includes a first support plate (6); the heat exchange core (3) also has a plurality of sidewalls (42), with the sidewalls (42) between the end plate (4) and the bottom plate (5); one side of one of the sidewalls (42) has the first support plate (6); One end of the first support plate (6) is fixedly connected to the end plate (4), and the other end of the first support plate (6) is fixedly connected to the bottom plate (5).

2. The heat exchanger according to claim 1, characterized in that, The sidewall (42) includes a first sidewall (7) and a second sidewall (30), the first sidewall (7) and the second sidewall (30) are adjacent to each other, and the first support plate (6) is located on one side of the first sidewall (7); The first sidewall (7) has a first direction Y, which is perpendicular to the thickness direction X of the heat exchange core (3); the second sidewall (30) has a second direction Z, which is perpendicular to the thickness direction X of the heat exchange core (3); the first sidewall (7) extends along the first direction Y for a length of L1, the second sidewall (30) extends along the second direction Z for a length of L2, and the thickness of the first support plate (6) is t1. L1, L2 and t1 satisfy the following relationship: L1 > L2, and 35 ≤ L1 / t1 ≤ 70.

3. The heat exchanger according to claim 1 or 2, characterized in that, The heat exchange core (3) has a first connector (8) which is fixedly connected to the base plate (5); one of the first connector (8) and the first support plate (6) has a positioning protrusion (9), and the other of the first connector (8) and the first support plate (6) has a positioning hole (10), and the positioning protrusion (9) is embedded in the positioning hole (10).

4. The heat exchanger according to claim 3, characterized in that, The first connector (8) includes a base plate portion (11) and a bent plate portion (12); the base plate portion (11) is fixedly connected to the bottom plate (5), and the bent plate portion (12) is bent relative to the base plate portion (11) in a direction away from the heat exchange core (3), and the bent plate portion (12) has a plurality of positioning protrusions (9); the first support plate (6) has a first sub-support plate portion (14), and the first sub-support plate portion (14) has a plurality of positioning holes (10).

5. The heat exchanger according to claim 4, characterized in that, The first sub-support plate portion (14) has a plurality of first support ribs (15) on the side near the bottom plate (5), and there is a gap between the first support ribs (15) and the bottom plate (5).

6. The heat exchanger according to any one of claims 1 to 5, characterized in that, The first support plate (6) also has at least one lug (17), and the end plate (4) has at least one bent protrusion (18), which is fixedly connected to the lug (17) by fasteners.

7. The heat exchanger according to claim 6, characterized in that, The first support plate (6) includes a first support plate body (13); the first support plate (6) also has a plurality of second reinforcing ribs (28), the second reinforcing ribs (28) protrude relative to the first support plate body (13), and the second reinforcing ribs (28) are located in the middle of the first support plate body (13).

8. The heat exchanger according to any one of claims 1 to 7, characterized in that, One of the end plate (4) and the bottom plate (5) is snapped into the first support plate (6); the other of the end plate (4) and the bottom plate (5) is fixedly connected to the first support plate (6); the fixed connection includes riveting, welding or threaded connection.

9. The heat exchanger according to any one of claims 2 to 8, characterized in that, The bracket (2) further includes a second support plate (31), which is located on one side of the second side wall (30); the second support plate (31) is fixedly connected to the first support plate (6) or is an integral structure, and the extension direction of the second support plate (31) intersects with the extension direction of the first support plate (6); the second support plate (31) has a limiting post (35).

10. The heat exchanger according to claim 9, characterized in that, The first support plate (6) also has a second sub-support plate portion (36) which extends toward the direction away from the heat exchange core (3) and has a shock-absorbing pad (37).

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