Cover plate of heat exchanger, heat exchanger and vehicle heating, ventilation and / or air conditioning system

Abstract

The utility model relates to a cover plate of a heat exchanger, the heat exchanger and a vehicle heating, ventilation and / or air conditioning system. The cover plate of the heat exchanger comprises at least one first groove formed in the first direction and at least one second groove formed in the second direction. The first groove is used for forming a fluid path with at least one pipe, located in the same row, of the heat exchanger. The second grooves are used for forming fluid paths with at least two tubes, located in different rows, of the heat exchanger. According to the heat exchanger cover plate, through the combination of the first groove and the second groove, the flow speed of fluid in a heat exchanger can be optimized, the overall temperature of a core body of the heat exchanger is more uniform, and meanwhile the pressure resistance of the heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a cover plate of a heat exchanger, a heat exchanger and a vehicle heating, ventilation and / or air conditioning system. Background Art

[0002] Motor vehicles generally include a ventilation, heating and / or air conditioning device, which basically includes a compressor, a condenser, a dryer, an expansion member and an evaporator. The refrigerant is compressed in the compressor, then the refrigerant is cooled in the condenser, then the refrigerant undergoes expansion in the expansion member, and finally the refrigerant enters the evaporator for cooling.

[0003] The evaporator includes a header box and a return box, between which a tube bundle is inserted. During the operation of the refrigerant circuit, the refrigerant enters the evaporator through the inlet opening included in the header box, and then the refrigerant flows between the header box and the return box through the tube bundle. The temperature of the refrigerant in the header box determines whether the evaporator works to heat or cool the air. When in the air heating state, the refrigerant temperature in the evaporator is high, which leads to a high internal pressure. The evaporator needs to have high pressure resistance. The unevenness of the refrigerant supply to the tube bundle leads to uneven temperature of the air flow through the evaporator. Other heat exchangers in the car also have similar shortcomings as the evaporator. Utility Model Content

[0004] In view of the above shortcomings in the prior art, the purpose of the present invention is to provide a cover plate of a heat exchanger, a heat exchanger and a vehicle heating, ventilation and / or air-conditioning system, which are used to improve the uneven temperature of the heat exchanger and enhance the pressure resistance of the heat exchanger.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides a cover plate of a heat exchanger, comprising: at least one first groove arranged along a first direction and at least one second groove arranged along a second direction; wherein the first groove is used to form a fluid path with at least one tube of the heat exchanger located in the same row; and the second groove is used to form a fluid path with at least two tubes of the heat exchanger located in different rows.

[0006] In one embodiment of the present application, the cover plate includes two first grooves of the same length and multiple second grooves of the same length, wherein one of the first grooves is used to form a fluid path with a portion of the tubes in a first row of the heat exchanger, and another of the first grooves is used to form a fluid path with a portion of the tubes in a second row of the heat exchanger; each of the second grooves is used to form a fluid path with at least one tube in another portion of the tubes in the first row and at least one tube in another portion of the tubes in the second row.

[0007] In one embodiment of the present application, two first grooves are located side by side on one side of the cover plate, and a plurality of second grooves are located side by side on the other side of the cover plate.

[0008] In one embodiment of the present application, a first interval is provided between two of the first grooves, a second interval is provided between each of the second grooves, and a third interval is provided between adjacent first grooves and second grooves.

[0009] In one embodiment of the present application, the first groove includes a first opening at an end away from the second groove.

[0010] In one embodiment of the present application, the first groove includes a curved surface at an end portion close to the second groove and / or both ends of the second groove include curved surfaces.

[0011] In one embodiment of the present application, the first direction includes a width direction of the heat exchanger, and the second direction includes a thickness direction of the heat exchanger.

[0012] To achieve the above-mentioned purpose and other related purposes, the present application provides a heat exchanger, comprising: a core body, and a cover plate of the heat exchanger as described above; wherein the cover plate is arranged above the core body as a top plate or below the core body as a bottom plate.

[0013] In one embodiment of the present application, the cover plate serves as the top plate, and the cover plate is connected to the first main plate of the heat exchanger at a position outside the at least one first groove and the at least one second groove.

[0014] In one embodiment of the present application, the base plate includes at least one third groove arranged along the first direction, and each of the third grooves forms a fluid path with the tubes of the heat exchanger located in the same row; the base plate is connected to the second main board of the heat exchanger at a position outside each of the third grooves.

[0015] In one embodiment of the present application, the first groove extends a first opening portion toward the outside of the core of the heat exchanger at the end away from the second groove, and the first main board is provided with a second opening portion at a position corresponding to the first opening portion; the first opening portion is relatively connected to the second opening portion and is sleeved in the sleeve to form an inlet or outlet for the fluid.

[0016] In one embodiment of the present application, the cover plate serves as the bottom plate, and the cover plate is connected to the second main plate of the heat exchanger at a position outside the at least one first groove and the at least one second groove.

[0017] In one embodiment of the present application, the top plate includes a plurality of fourth grooves arranged along the first direction, and each row of pipes of the heat exchanger forms a respective fluid path with at least two of the fourth grooves; the top plate is connected to the first main board of the heat exchanger at a position outside the fourth grooves.

[0018] In one embodiment of the present application, one end of the two fourth grooves extends a third opening portion toward the outside of the core body, and the first main board is provided with a second opening portion at a position corresponding to the third opening portion; the third opening portion is relatively connected to the second opening portion and is sleeved in the sleeve to form an inlet or outlet for the fluid.

[0019] In one embodiment of the present application, the heat exchanger includes: an evaporator.

[0020] In one embodiment of the present application, the first direction includes the width direction of the heat exchanger, and the second direction includes the thickness direction of the heat exchanger; the heat exchanger includes: an evaporator.

[0021] To achieve the above-mentioned purpose and other related purposes, the present application provides a vehicle heating, ventilation and / or air-conditioning system, including the heat exchanger described above.

[0022] The heat exchanger cover plate of the utility model can optimize the flow rate of the fluid in the heat exchanger through the combination of the first groove and the second groove, so that the overall temperature of the heat exchanger core is more uniform, and at the same time the pressure resistance of the heat exchanger is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0024] Figure 1 This is a schematic diagram of the assembly structure of a heat exchanger in one embodiment of the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the heat exchanger shown;

[0026] Figure 3a for Figure 1 A schematic diagram of the structure of the top plate in a top view;

[0027] Figure 3b for Figure 1 A schematic diagram of the structure of the top plate in the front view;

[0028] Figure 3c This is a schematic diagram of the cross-sectional structure of the second groove in one embodiment of the utility model;

[0029] Figure 4 for Figure 1 A schematic diagram of the assembly structure of the first main board and the core;

[0030] Figure 5 This is a schematic diagram of the assembly structure of a heat exchanger in one embodiment of the utility model;

[0031] Figure 6 for Figure 5 A schematic diagram of the structure of the heat exchanger shown in another viewing angle;

[0032] Figure 7a for Figure 5 A schematic diagram of the structure of the top plate in a top view;

[0033] Figure 7b for Figure 5 Schematic diagram of the structure of the top plate in the front view. DETAILED DESCRIPTION

[0034] The following discloses various different implementation methods or embodiments of the subject technical solution. To simplify the disclosed content, specific examples of each element and arrangement are described below. Of course, these are only examples and are not intended to limit the scope of protection of the utility model. For example, the first feature recorded later in the specification is distributed in the second feature, which may include an implementation method in which the first and second features are distributed in a directly connected manner, and may also include an implementation method in which additional features are formed between the first and second features, so that the first and second features may not be directly connected. In addition, the contents may repeat the figure marks and / or letters in different examples. This repetition is for simplicity and clarity, and it does not itself represent the relationship between the various implementation methods and / or structures to be discussed. Further, when the first element is described in a manner connected or combined with the second element, the description includes an implementation method in which the first and second elements are directly connected or combined with each other, and also includes the use of one or more other intervening elements to indirectly connect or combine the first and second elements.

[0035] It should be noted that the drawings are only examples and are not drawn in proportion, and should not be used as a limitation on the actual protection scope of the present invention.

[0036] The present application provides a cover plate of a heat exchanger, which includes: at least one first groove arranged along a first direction and at least one second groove arranged along a second direction. The first groove is used to form a fluid path with at least one tube of the heat exchanger located in the same row; the second groove is used to form a fluid path with at least two tubes of the heat exchanger located in different rows. The length, number, arrangement position, shape and other parameters of the first and second grooves are not limited, and those skilled in the art can set them according to their needs. In addition, this cover plate can be used as a top plate or a bottom plate of a heat exchanger, and cooperates with a corresponding bottom plate or a top plate to divide the heat exchanger tube bundle into different numbers of channels to form a heat exchanger with different fluid paths.

[0037] The following will provide a detailed introduction with reference to the accompanying drawings.

[0038] Figures 1 to 4 An exemplary embodiment of a heat exchanger 100 according to the present invention is depicted. In a specific application of the present invention, the heat exchanger 100 is an evaporator incorporated into a motor vehicle air conditioning circuit (not shown in the figure), and the evaporator is placed in a housing (not shown) of a heating, ventilation and / or air conditioning device of the vehicle. The conventional evaporator is used to evaporate the low-pressure refrigerant flowing out of the expansion valve, thereby absorbing the heat of the air in the vehicle to achieve the purpose of cooling the vehicle. The new evaporator can have both cooling and heating functions. Compared with the cooling mode, the operating temperature and pressure of the evaporator in heating are relatively high.

[0039] It should be noted that, as an alternative, this heat exchanger can also be used as other heat exchangers in the vehicle, as long as the structure of the heat exchanger is modified accordingly, which are not listed here one by one.

[0040] like Figure 1 As shown, the heat exchanger 100 extends its width in a first direction x, extends its thickness in a second direction y perpendicular to the first direction x, and extends its height in a third direction z perpendicular to both the first direction x and the second direction y.

[0041] like Figures 1-2 As shown, the heat exchanger 100 includes a top plate 1, a first main plate 2, a second main plate 3 and a bottom plate 4 arranged in a first direction x, and a plurality of tubes 6 arranged in the first direction x and the second direction y. The tubes 6 are divided into a first row of tubes 6a and a second row of tubes 6b extending in the first direction x and arranged front and back in the second direction y. Between two adjacent rows of tubes 6 along the second direction y, a partition 7 formed by corrugated fins is respectively arranged, the purpose of which is to promote heat exchange. In addition, the leftmost and rightmost tubes 6 are first connected to the partition 7 and then to the side plate 8. Each tube 6, the partition 7 and the side plate 8 form the core of the heat exchanger 100, wherein the side plate 8 can provide greater rigidity to protect the plurality of tubes 6.

[0042] The first main board 2 and the second main board 3 are respectively provided with mounting holes 21 and 31 that match the positions and sizes of the first row of tubes 6a and the second row of tubes 6b. After assembly, the upper end of each tube 6 is inserted into the mounting hole 21 of the first main board 2, and the lower end of each tube 6 is inserted into the mounting hole 31 of the second main board 3. The top plate 1 is connected to the first main board 2, and the connecting sleeve 9 is passed through the left end in the figure to form the inlet and outlet of the fluid, and the bottom plate 4 is connected to the second main board 3.

[0043] As shown in FIG3 , it is a structural diagram of the top plate 1 in a top view, which is rectangular as a whole and is formed with a first groove 11 and a second groove 12, which can be formed by stamping, for example. The first groove 11 is arranged along a first direction x, and the second groove is arranged along a second direction y. The first groove 11 is used to form a fluid path with at least one tube 6 of the heat exchanger 100 located in the same row, and the second groove 12 is used to form a fluid path with at least two tubes 6 of the heat exchanger 100 located in different rows.

[0044] In detail, in this embodiment, the first groove 11 includes: a first groove 11a that forms a fluid path with the plurality of tubes 6 located on the left side of the first row of tubes 6a, and a first groove 11b that forms a fluid path with the plurality of tubes 6 located on the left side of the second row of tubes 6b. The first groove 11a and the first groove 11b have the same length, and the number of tubes 6 connected thereto is also the same. In other embodiments, the lengths of the first groove 11a and the first groove 11b may also be different, that is, the number of tubes 6 connected thereto may also be different, and the present application is not limited to the embodiments of the accompanying drawings.

[0045] In this embodiment, the first groove 11a and the first groove 11b are both arranged on the left side of the top plate 1, and in other embodiments, they can also be arranged on the right side or both sides of the top plate 1. In this embodiment, a first spacer 13 is arranged between the first groove 11a and the first groove 11b. During assembly, the top plate 1 is connected to the first main plate 2 at the position of the first spacer 13, such as by welding, so that the fluid paths formed by the first groove 11a and the first groove 11b are independent of each other.

[0046] See also Figure 3b and Figure 4 In this embodiment, the first groove 11a and the first groove 11b extend a first opening 14 toward the outside of the core of the heat exchanger 100 at the ends away from the second groove 12. The first opening 14 is first reduced in size to form a stepped structure during the extension process, and then continues to extend to form an opening 141 with a semicircular cross section while maintaining the reduced size. Figure 4As shown, the first main board 2 is provided with respective second openings 20 below the first openings 14, and the second openings 20 have openings 211 with a semicircular cross section. During assembly, the openings 141 and 211 are arranged relative to each other and connected to form a complete circle, and are sleeved together in the sleeve 9 with a matching aperture, thereby forming a fluid inlet and a fluid outlet of the heat exchanger 100. It should be noted that the implementation method described in this embodiment in which the first groove is connected to the first main board to form a fluid inlet and outlet should not be regarded as a limitation to the present application.

[0047] like Figure 3b As shown, the first groove 11a and the first groove 11b have curved surfaces at one end close to the second groove 12 to reduce the flow resistance of the fluid.

[0048] See also Figure 3a and Figure 3b In this embodiment, the second groove 12 includes a plurality of grooves arranged adjacent to each other and located on the right side of the top plate 1. It should be noted that the length, height, shape and number of the first groove 11 and the second groove 12 will affect the pressure resistance and uniformity performance of the heat exchanger 100, and those skilled in the art can select the parameters according to their needs.

[0049] In accordance with the above, in this embodiment, each second groove 12 forms a fluid path with two tubes 6 of the first row of tubes 6a and two tubes 6 of the corresponding second row of tubes 6b. It should also be noted that the present application does not limit the number of tubes 6 of the first row of tubes 6a and the number of tubes 6 of the second row of tubes 6b covered by the second groove 12.

[0050] In this embodiment, a second spacer 15 is provided between two adjacent second grooves 12. During assembly, the top plate 1 is connected to the first main plate 2 at the position of the second spacer 15, such as by welding, so that the fluid paths formed by the second grooves 12 are independent of each other. Figure 3b and Figure 3c As shown, both ends of the second groove 12 include curved surfaces to reduce the flow resistance of the fluid.

[0051] like Figure 3a As shown, the top plate 1 is further provided with a third spacer 16 between the first groove 11 and the second groove 12. During assembly, the top plate 1 is connected to the first main plate 2 at the position of the third spacer 16 so that the fluid path formed by the first groove 11 and the fluid path formed by the second groove 12 are independent of each other.

[0052] In this embodiment, the top plate 1 is connected to the first main plate 2 at parts other than the first groove 11 and the second groove 12, for example, by welding. Figure 4 Before welding the top plate 1 and the first main plate 2 , the side edges of the top plate 1 along the first direction x are fixed by the respective biting flanges 22 of the first main plate 2 .

[0053] See also Figure 2 In this embodiment, the bottom plate 4 includes two third grooves 41 arranged along the first direction x. Each third groove 41 forms a fluid path with the first row of tubes 6a or the second row of tubes 6b of the heat exchanger 100. Both ends of the third groove 31 include curved surfaces to reduce the flow resistance of the fluid. The bottom plate 41 is connected to the second main board 3 of the heat exchanger at positions other than the third grooves 41, such as by welding. Specifically, before the bottom plate 4 and the second main board 3 are welded, the side edges of the bottom plate 4 along the first direction x are fixed by the respective biting flanges 32 of the second main board 3.

[0054] It should be noted that the heat exchanger of the present application is not limited to the above-mentioned bottom plate 4, and those skilled in the art can set the length of the third groove as needed.

[0055] like Figures 1 to 4 The heat exchanger 100 shown is a four-channel design. Referring to the solid arrow at the sleeve 9, the fluid (such as refrigerant) enters the first groove 11a from the inlet and flows downward through the first row of pipes 6a connected thereto, as shown by the solid arrow on the left side of the core. After the fluid flows to the bottom plate 4, specifically the third groove in the bottom plate 4 connected to the first row of pipes 6a, it flows to the right along the direction of the solid arrow, and then flows upward through the first row of pipes 6a connected to each second groove 12, as shown by the solid arrow on the right side of the core. After reaching the second groove 12, the fluid flows to the second row of pipes 6b connected to the second groove 12 in the direction of the arrow, and then the fluid flows downward along the direction shown by the dotted arrow on the right side of the core. After reaching the bottom plate 4, specifically the third groove in the bottom plate 4 connected to the second row of pipes 6b, it flows to the left along the direction shown by the dotted arrow, and then flows upward through the second row of pipes 6b connected to the first groove 11b, as shown by the dotted arrow on the left side of the core. Finally, referring to the dotted arrow at the sleeve 9 , the fluid flows out from the outlet of the first groove 11 b .

[0056] The top plate 1 of the heat exchanger 100 can optimize the flow rate of the fluid in the heat exchanger 100 through the design of combining the first groove 11 and the second groove 12, so that the overall temperature of the core of the heat exchanger 100 is more uniform, and the pressure resistance of the heat exchanger 100 is improved.

[0057] Figure 5 to Figure 6 FIG. 2 depicts an exemplary embodiment of a heat exchanger 200 according to the present invention. Unlike the heat exchanger 100, the bottom plate 202 of the heat exchanger 200 adopts a structure similar to the top plate 1 of the heat exchanger 100, while the top plate 201 adopts a structure similar to the top plate 1 of the heat exchanger 100. Figure 7a-7b The structure shown.

[0058] The top plate 201 includes four fourth grooves 201a~201b arranged along the first direction x, wherein the fourth groove 201a is connected to a portion of the pipes of the heat exchanger 200 located in the first row, and the fourth groove 201b is connected to another portion of the pipes of the heat exchanger 200 located in the first row; the fourth groove 201c is connected to a portion of the pipes of the heat exchanger 200 located in the second row, and the fourth groove 201d is connected to another portion of the pipes of the heat exchanger 200 located in the second row.

[0059] The top plate 201 is connected to the first main plate of the heat exchanger 200 at the top except the fourth grooves 201a-201b, such as by welding. The bottom plate 202 is connected to the second main plate of the heat exchanger 200 at the bottom except the first grooves 203a, 203b and the second groove 204, such as by welding.

[0060] In this embodiment, the top plate 201 is similar in structure to the top plate 1 in the aforementioned embodiment in that the left end of the fourth grooves 201a and 201c extends a third opening portion 205 toward the outside of the core of the heat exchanger 200. The third opening portion 205 is similar in structure to the first opening portion 14 in the aforementioned embodiment, and will not be described again here. The first main board of this embodiment is similar in structure to the first main board 2 in the aforementioned embodiment, so when assembling this embodiment, the third opening portion and the second opening portion can also be relatively arranged and connected to form a complete circle, and are sleeved together in a sleeve with an aperture adaptation, thereby forming a fluid inlet and a fluid outlet of the heat exchanger 200. It should be noted that the implementation method described in this embodiment in which the fourth grooves 201a and 201c are connected to the first main board to form a fluid inlet and outlet should not be regarded as a limitation to the present application.

[0061] like Figures 5 to 7b The heat exchanger 200 shown is a six-pass design. Figure 5 The solid arrow at the middle sleeve 9 shows that the fluid (such as refrigerant) enters the fourth groove 201a from the inlet and flows downward through the first row of pipes connected thereto. After the fluid flows to the bottom plate 202, specifically the first groove 203a in the bottom plate 202 connected to the first row of pipes, it flows to the right along the direction of the solid arrow, and then flows upward through the first row of pipes connected to the fourth groove 201b. After the fluid flows to the fourth groove 201b, it flows to the right, and then flows downward through the first row of pipes connected to the second groove 204. After the fluid flows to the second groove 204, as shown by the dotted line, it flows upward along the second row of pipes connected thereto. After the fluid flows to the fourth groove 201d, it flows to the left, and then flows downward through the second row of pipes connected to the first groove 203b, and flows to the left after flowing to the first groove 203b. Finally, the fluid flows upward through the second row of pipes connected to the first groove 203b, see the dotted arrow at the sleeve 9, and finally the fluid flows out from the outlet of the first groove 201c.

[0062] The bottom plate 202 of the heat exchanger 200 is designed by combining the first groove 11 and the second groove 12, and the fourth grooves arranged on each row of tubes on the top plate 201 can further optimize the flow rate of the fluid in the heat exchanger 200, making the overall temperature of the core of the heat exchanger 200 more uniform, while improving the pressure resistance of the heat exchanger 200.

[0063] It should be noted that the above four-channel heat exchanger 100 and six-channel heat exchanger 200 are preferred embodiments of the present application and should not be regarded as limitations to the present application.

[0064] In addition, the present application also provides a vehicle heating, ventilation and / or air-conditioning system, which includes the heat exchanger introduced in any of the above embodiments, which will not be repeated here.

[0065] Although the utility model is disclosed as above in the form of a preferred embodiment, it is not intended to limit the utility model. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the utility model. Any changes, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model shall fall within the scope of protection defined by the claims of the utility model.

Claims

1. A cover plate of a heat exchanger, characterized in that: include: At least one first groove is arranged along the first direction and at least one second groove is arranged along the second direction; wherein, The first groove is used to form a fluid path with at least one tube of the heat exchanger located in the same row; The second groove is used to form a fluid path with at least two tubes of the heat exchanger located in different rows.

2. The cover plate according to claim 1, characterized in that: The cover plate comprises two first grooves of the same length and a plurality of second grooves of the same length, One of the first grooves is used to form a fluid path with a portion of the tubes in a first row of the heat exchanger, and another of the first grooves is used to form a fluid path with a portion of the tubes in a second row of the heat exchanger; Each of the second grooves is used to form a fluid path with at least one tube in another portion of the tubes in the first row and at least one tube in another portion of the tubes in the second row.

3. The cover plate according to claim 2, characterized in that: Two of the first grooves are located side by side on one side of the cover plate, and a plurality of the second grooves are located side by side on the other side of the cover plate.

4. The cover plate according to claim 3, characterized in that: A first interval is provided between two of the first grooves, a second interval is provided between each of the second grooves, and a third interval is provided between adjacent first grooves and second grooves.

5. The cover plate according to claim 3, characterized in that: The first groove includes a first opening portion at an end portion away from the second groove.

6. The cover plate according to claim 3, characterized in that: The first groove includes a curved surface at an end portion close to the second groove and / or both ends of the second groove include curved surfaces.

7. The cover plate according to claim 1, characterized in that: The first direction includes a width direction of the heat exchanger, and the second direction includes a thickness direction of the heat exchanger.

8. A heat exchanger, characterized in that: include: A core body, and a cover plate of a heat exchanger as claimed in any one of claims 1 to 7; wherein the cover plate is arranged above the core body as a top plate or is arranged below the core body as a bottom plate.

9. The heat exchanger according to claim 8, characterized in that The cover plate serves as the top plate, and the cover plate is connected to the first main plate of the heat exchanger at a position outside the at least one first groove and the at least one second groove.

10. The heat exchanger according to claim 9, characterized in that The bottom plate includes at least one third groove arranged along the first direction, and each of the third grooves forms a fluid path with the tubes of the heat exchanger located in the same row; the bottom plate is connected to the second main board of the heat exchanger at a position outside each of the third grooves.

11. The heat exchanger according to claim 9, characterized in that The first groove extends a first opening portion toward the outside of the core of the heat exchanger at the end away from the second groove, and the first main board is provided with a second opening portion at a position corresponding to the first opening portion; the first opening portion is relatively connected to the second opening portion and is sleeved in the sleeve to form an inlet or outlet for the fluid.

12. The heat exchanger according to claim 8, characterized in that The cover plate serves as the bottom plate, and the cover plate is connected to the second main plate of the heat exchanger at a position outside the at least one first groove and the at least one second groove.

13. The heat exchanger according to claim 12, characterized in that The top plate includes a plurality of fourth grooves arranged along the first direction, and each row of tubes of the heat exchanger forms a respective fluid path with at least two of the fourth grooves; the top plate is connected to the first main board of the heat exchanger at a position outside the fourth grooves.

14. The heat exchanger according to claim 13, characterized in that One end of two of the fourth grooves extends a third opening portion toward the outside of the core body, and the first main board is provided with a second opening portion at a position corresponding to the third opening portion; the third opening portion is relatively connected to the second opening portion and is sleeved in the sleeve to form an inlet or outlet for the fluid.

15. The heat exchanger according to claim 8, characterized in that The heat exchanger includes an evaporator.

16. A vehicle heating, ventilation and / or air conditioning system, characterized in that: include: A heat exchanger as claimed in any one of claims 8 to 15.

Images