heat exchanger

Abstract

The present application relates to the field of heat exchange technology, and in particular to a heat exchanger, comprising: a current collecting member, a heat exchange member and a bracket, wherein the current collecting member and the heat exchange member are fixedly connected, and the inner cavity of the current collecting member and the inner cavity of the heat exchange member are communicated, a connecting portion is provided on the outer side of the current collecting member, the bracket comprises a first connecting plate, the connecting portion comprises a limiting groove and a groove wall forming the limiting groove, the notch of the limiting groove faces the first connecting plate, the first connecting plate is provided with a positioning protrusion at a position opposite to the limiting groove, the positioning protrusion is accommodated in the limiting groove, and the first connecting plate is in contact with the connecting portion.

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] The relevant heat exchanger needs to install a bracket on the current collecting part, but if the bracket is not connected to the current collecting part properly, it is easy for the surfaces of the bracket and the current collecting part to not fit together well, increasing the probability of relative sliding. Summary of the Invention

[0003] In view of the above-mentioned problems, the present application provides a heat exchanger in which the bracket and the current collecting member can fit well together, thereby reducing the probability of relative sliding.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] The present application provides a heat exchanger, comprising: a current collecting member, a heat exchanging member, and a bracket, wherein the current collecting member and the heat exchanging member are fixedly connected, and an inner cavity of the current collecting member and an inner cavity of the heat exchanging member are communicated;

[0006] A connecting portion is provided on the outer side of the current collecting member, and the bracket includes a first connecting plate, which is fitted with the connecting portion. The connecting portion includes a limiting groove and a groove wall forming the limiting groove, and the notch of the limiting groove faces the first connecting plate. The first connecting plate is provided with a positioning protrusion opposite to the limiting groove, and the positioning protrusion is accommodated in the limiting groove.

[0007] In the heat exchanger provided in the present application, a limiting groove is provided on the connection part of the collecting member, and a positioning protrusion is provided on the first connecting plate opposite to the limiting groove. The coordinated positioning of the positioning protrusion and the limiting groove enables the first connecting plate to fit better with the connecting part and is not easy to slide relative to each other.

[0008] In a possible embodiment, the depth of the limiting groove is greater than the wall thickness of the current collecting member, and the groove wall protrudes from the inner wall of the current collecting member.

[0009] In a possible embodiment, the limiting groove includes a first end and a second end that are arranged opposite to each other, the notch of the limiting groove is located at the first end, the bottom of the groove wall is located at the second end, and the diameter of the first end is smaller than the diameter of the second end.

[0010] In a possible embodiment, the limiting groove is conical or wedge-shaped.

[0011] In a possible embodiment, the positioning protrusion is interference-connected with the groove wall.

[0012] In a possible embodiment, the first connecting plate is an arc-shaped plate, comprising an outer arc wall and an inner arc wall, the positioning protrusion protrudes from the inner arc wall, and the connecting portion has an arc-shaped surface matching the inner arc wall of the first connecting plate.

[0013] In a possible embodiment, the first connecting plate is provided with a groove along the positioning protrusion, and a notch of the groove is located on the outer arc wall.

[0014] In a possible embodiment, the bracket further includes a second connecting plate, and the second connecting plate is fixedly connected to the first connecting plate, or the second connecting plate and the first connecting plate are an integrally formed structure.

[0015] In a possible embodiment, the second connecting plate is connected to the outer arc wall of the first connecting plate, and divides the outer arc wall into two symmetrical areas.

[0016] In a possible embodiment, the current collecting member includes a first current collecting pipe and a second current collecting pipe, and the heat exchange member includes a plurality of heat exchange tubes spaced apart and arranged in parallel. The heat exchange tubes are located between the first current collecting pipe and the second current collecting pipe, and both ends of the heat exchange tubes are respectively arranged in the tube cavities of the first current collecting pipe and the second current collecting pipe. The first current collecting pipe and the second current collecting pipe are both fixedly connected to the heat exchange tubes.

[0017] The first collecting pipe and the second collecting pipe are both provided with two connecting parts, and the two connecting parts are respectively provided close to the two ends of the pipe, and a bracket is correspondingly provided on each connecting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a heat exchanger according to an exemplary embodiment of the present application;

[0019] Figure 2 1 is a schematic diagram of the assembly structure of a current collecting member and a bracket according to an exemplary embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the assembly structure of the current collecting member and the bracket at another angle of an exemplary embodiment of the present application.

[0021] Figure 4 yes Figure 2 Cross-sectional view along AA direction;

[0022] Figure 5 is a front view of a bracket according to an exemplary embodiment of the present application;

[0023] Figure 6 yes Figure 5 Partial cross-sectional view along direction BB;

[0024] Figure 7 This is a schematic diagram of the riveting die structure according to an embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of a riveting tooling according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0027] The terms used in this application are for the purpose of describing particular embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0028] It should be understood that the words “first”, “second” and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as “a” or “an” do not indicate a quantity limitation, but rather indicate the presence of at least one; “plurality” indicates a quantity of two or more. Unless otherwise indicated, words such as “front”, “rear”, “lower” and / or “upper” are for ease of description only and are not limited to one position or one spatial orientation. Words such as “include” or “comprising” and similar terms mean that the elements or objects appearing before “include” or “comprising” cover the elements or objects listed after “include” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0029] The heat exchanger of the exemplary embodiment of the present application is described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or be combined with each other.

[0030] The connection between the current collector and the bracket is achieved through spot welding or clamping. For example, improper control of welding time or electrode pressure during spot welding can lead to cracks on the weld surface, localized burn-through, and overflow, which pollutes the environment and wastes costs. Furthermore, during the heat exchanger brazing process, the composite layer on the current collector surface melts, causing relative slip between the bracket and the current collector, preventing a proper fit.

[0031] The heat exchanger provided in this application includes: a current collecting member 1, a heat exchange member 2, and a bracket 3. The current collecting member 1 and the heat exchange member 2 are fixedly connected and sealed at the connection, and the inner cavity of the current collecting member 1 is connected to the inner cavity of the heat exchange member 2. The current collecting member 1 is used to circulate refrigerant, which can enter the inner cavity of the heat exchange member 2. The refrigerant absorbs heat or releases heat through the heat exchange member 2. For example, the refrigerant exchanges heat with air through the heat exchange member, or exchanges heat with coolant. The bracket 3 is installed on the current collecting member 1 and is used to connect the heat exchanger to system components.

[0032] like Figure 1 As shown, the current collecting element 1 includes a first collecting tube 101 and a second collecting tube 102 formed by winding a sheet material. The surface of the sheet material is coated with flux and is a composite sheet material. The heat exchange element 2 includes a plurality of spaced and parallel heat exchange tubes 201. The heat exchange tubes 201 are located between the first collecting tube 101 and the second collecting tube 102. The first collecting tube 101 and the second collecting tube 102 are both provided with mounting openings 103 for mounting the heat exchange tubes 201. The mounting openings 103 correspond one-to-one with the heat exchange tubes 201. The ends of the heat exchange tubes 201 extend into the tube cavities of the first collecting tube 101 and the second collecting tube 102 respectively through the mounting openings 103. The first collecting tube 101 is connected to the second collecting tube 102 through the heat exchange tubes 201, and the refrigerant can flow between the first collecting tube 101 and the second collecting tube 102.

[0033] The first manifold 101 and the second manifold 102 are brazed together with the heat exchange tube 201. A gap is left between the tube wall of the heat exchange tube 201 and the tube wall at the mounting opening 103. During the brazing process, flux flows into this gap, thereby securing the heat exchange tube 201 to the manifold 1 and sealing the connection to prevent refrigerant leakage. The heat exchange tube 201 may be a microchannel flat tube. The refrigerant introduced into the heat exchanger may be carbon dioxide or other refrigerants such as R134A. The heat exchanger can function as a condenser or an evaporator.

[0034] In other embodiments, heat exchange fins, such as corrugated fins, window fins, serrated fins, straight fins, louvered fins, etc., may be installed between two adjacent heat exchange tubes 201, and the heat exchange fins are fixed to the outer wall of the heat exchange tube 201 by brazing.

[0035] The first header 101 and the second header 102 are both provided with two connecting portions 11 , and the two connecting portions 11 are provided close to the ends of the tubes, and a bracket 3 is correspondingly provided on each connecting portion 11 .

[0036] Please refer to Figures 2 to 6, taking the first collecting pipe 101 as an example, the connection structure of the bracket 3 and the collecting part 1 is described. Two connecting parts 11 are provided on the outside of the first collecting pipe 101. The two connecting parts 11 are far away from each other and are respectively provided close to the two ends of the pipe, so that when the heat exchanger is connected with the system components, the overall force structure is relatively stable. The bracket 3 includes a first connecting plate 31, and the first connecting plate 31 is in contact with the connecting part 11. The connecting part 11 includes a limiting groove 110 and a groove wall 111 forming the limiting groove 110. The notch of the limiting groove 110 faces the first connecting plate 31. The first connecting plate 31 is provided with a positioning protrusion 310 opposite to the limiting groove 110. The positioning protrusion 310 is accommodated in the limiting groove 110, and the peripheral side of the positioning protrusion 310 is interference fit with the groove wall 111. In other embodiments, the positioning protrusion 310 and the limiting groove 110 can also cooperate with each other to limit the installation position of the bracket 3. When the positioning protrusion 310 is located at a certain depth in the limiting groove 110, it can ensure that the first connecting plate 31 and the connecting part 11 can fit well.

[0037] In this embodiment, the depth of the limiting groove 110 is greater than the wall thickness of the first header 101, and the groove wall 111 protrudes from the inner wall of the first header 101. In other embodiments, the groove depth of the limiting groove 110 may be less than or equal to the wall thickness of the first header 101.

[0038] In this embodiment, the limiting groove 110 includes a first end and a second end that are oppositely disposed. The notch of the limiting groove 110 is located at the first end, and the bottom of the groove wall 111 is located at the second end. The diameter of the limiting groove 110 at the first end is smaller than the diameter at the second end. The limiting groove 110 may be conical. In other embodiments, the limiting groove 110 may also be wedge-shaped. Accordingly, the diameter of the positioning protrusion 310 at the first end is also smaller than the diameter at the second end.

[0039] In other embodiments, the diameter of the positioning protrusion 310 may also remain unchanged, or the diameters of the positioning protrusion 310 and the limiting groove 110 gradually increase from the first end to the second end (smooth transition), and when the positioning protrusion 310 is inserted into the limiting groove 110, the deeper the insertion depth, the greater the interaction force between the positioning protrusion 310 and the groove wall 111, thereby achieving an interference connection.

[0040] The first connecting plate 31 is an arc-shaped plate, which includes an outer arc wall 311 and an inner arc wall 312. The positioning protrusion 310 is formed by the outer arc wall 311 being recessed toward the inner arc wall 312 and protruding from the inner arc wall 312. The connecting portion 11 has an arc-shaped surface 112 that is adapted to the inner arc wall 312 of the first connecting plate 31.

[0041] The bracket 3 further includes a second connecting plate 32 , which is fixedly connected to the outer arc wall 311 of the first connecting plate 31 , or the second connecting plate 32 and the first connecting plate 31 are an integrally formed structure.

[0042] In this embodiment, the second connecting plate 32 and the first connecting plate 31 are integrally formed. The first connecting plate 31 is in the shape of a straight plate. The second connecting plate 32 is connected to the outer arc wall 311 of the first connecting plate 31, dividing the outer arc wall 311 into two symmetrical regions. In each region, the outer arc wall 311 is recessed toward the inner arc wall 312 to form two grooves 313. Correspondingly, the first connecting plate 31 has positioning protrusions 310 formed at corresponding positions.

[0043] The second connecting plate 32 is further provided with a mounting hole 33 for connecting to system components. The mounting hole 33 is located at the center of the second connecting plate 32. In other embodiments, the second connecting plate 32 may also be provided along the edge of the first connecting plate 31.

[0044] This embodiment provides an embodiment of a riveting process for connecting the bracket 3 and the current collecting member 1. Figures 7 and 8 As shown, the inner arc wall 312 of the bracket 3 is first fitted with the arc surface 112, and a mold 5 is placed in the inner cavity of the current collector 1. The mold 5 has a mold groove 51, and the notch of the mold groove 51 is placed toward the inner wall of the current collector 1, and the mold 5 is tightly attached to the inner wall of the current collector 1. An extrusion member 4 is placed at the position corresponding to the outer arc wall 312 and the mold 5. The extrusion member 4 has an extrusion head 41, and the diameter of the extrusion head 41 is smaller than the outer diameter of the mold groove 51. When the extrusion member 4 is extruded toward the current collector 1, the first connecting plate 31 and the connecting portion 11 are deformed simultaneously within the limited range of the mold groove 51 under the action of the extrusion head 41. The first connecting plate 31 forms a positioning protrusion 310 toward the current collector 1, and the outer arc wall 312 is recessed to form a groove 313. That is, the groove 313 is formed inside the positioning protrusion 310, and the portion of the connecting portion 11 at the connection point protrudes from the inner wall of the current collector 1, forming a limiting groove 110 for nesting the positioning protrusion 310. With the cooperation of the extrusion member 4 and the die 5, the positioning protrusion 310 and the groove wall 111 are firmly pressed together. After the heat exchanger is assembled, it needs to be brazed in a furnace. During the brazing process, the flux on the surface of the groove wall 111 melts, allowing the groove wall 111 and the positioning protrusion 310 to be welded together. Moreover, during the brazing process of the heat exchanger provided in this embodiment, even if the composite layer on the surface of the current collector 1 melts, the surfaces of the bracket 3 and the current collector 1 can still be attached together, preventing relative sliding.

[0045] It should be noted that, due to the presence of the die groove 51 and the diameter of the extrusion head 41 being smaller than the outer diameter of the die groove 51, during the riveting process, the current collecting member 1 and the bracket 3 are squeezed and deformed toward the die groove 51, causing the diameter of the limiting groove 110 at the first end to be smaller than the diameter at the second end. At the same time, the diameter of the positioning protrusion 310 at the first end is smaller than the diameter at the second end, forming a nested structure (such as Figure 8 In this way, the positioning protrusion 310 can be prevented from being separated from the limiting groove 110.

[0046] In other embodiments, the positioning protrusion 310 and the groove wall 111 may not be formed by riveting, the bracket may be customized through a stamping die, and the limiting groove 110 on the current collecting part 1 may also be formed by stamping. After the bracket 3 and the current collecting part 1 are assembled, the positioning protrusion 310 and the groove wall 111 are welded and fixed.

[0047] The riveting process extrudes the sheet metal into shape using a dedicated die. This creates a strong connection between the current collector 1 and the bracket 3. After riveting, the bracket 3 and the current collector 1 exhibit no tearing or deformation at the joint, ensuring a tight seal between the heat exchanger and the bracket 3, preventing refrigerant leakage.

[0048] The support 3 and the current collecting member 1 of the heat exchanger provided in the present application have high connection efficiency, and the static strength and dynamic strength at the connection are relatively high. The connection method between the two is simple, which reduces costs.

[0049] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with this profession can use the technical content disclosed above to make some changes or modifications to equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A heat exchanger, characterized in that: include: A current collecting member (1), a heat exchange member (2) and a bracket (3), wherein the current collecting member (1) and the heat exchange member (2) are fixedly connected, and the inner cavity of the current collecting member (1) and the inner cavity of the heat exchange member (2) are in communication; A connecting portion (11) is provided on the outer side of the current collecting member (1), the bracket (3) includes a first connecting plate (31), the first connecting plate (31) is fitted with the connecting portion (11), the connecting portion (11) includes a limiting groove (110) and a groove wall (111) forming the limiting groove (110), the notch of the limiting groove (110) faces the first connecting plate (31), a positioning protrusion (310) is provided at a position opposite to the limiting groove (110), and the positioning protrusion (310) is accommodated in the limiting groove (110); The limiting groove (110) comprises a first end and a second end that are arranged opposite to each other, the notch of the limiting groove (110) is located at the first end, the bottom of the groove wall (111) is located at the second end, the diameter of the limiting groove (110) at the first end is smaller than the diameter at the second end, and the diameter of the positioning protrusion (310) at the first end is also smaller than the diameter at the second end; the depth of the limiting groove (110) is greater than the wall thickness of the current collecting member (1), and the groove wall (111) protrudes from the inner wall of the current collecting member (1); The positioning protrusion (310) is interference-connected with the groove wall (111).

2. A heat exchanger according to claim 1, characterized in that: The limiting groove (110) is conical or wedge-shaped.

3. A heat exchanger according to claim 1, characterized in that: The first connecting plate (31) is an arc-shaped plate, comprising an outer arc wall (311) and an inner arc wall (312), the positioning protrusion (310) protruding from the inner arc wall (312), and the connecting portion (11) having an arc-shaped surface (112) matching the inner arc wall (312) of the first connecting plate (31).

4. A heat exchanger according to claim 3, characterized in that: The first connecting plate (31) is provided with a groove (313) along the positioning protrusion (310), and the notch of the groove (313) is provided on the outer arc wall (311).

5. A heat exchanger according to claim 3, characterized in that: The bracket (3) further comprises a second connecting plate (32), wherein the second connecting plate (32) is fixedly connected to the first connecting plate (31), or the second connecting plate (32) and the first connecting plate (31) are an integrally formed structure.

6. A heat exchanger according to claim 5, characterized in that: The second connecting plate (32) is connected to the outer arc wall (311) of the first connecting plate (31) and divides the outer arc wall (311) into two symmetrical areas.

7. A heat exchanger according to claim 1, characterized in that: The current collecting member (1) comprises a first current collecting pipe (101) and a second current collecting pipe (102); the heat exchange member (2) comprises a plurality of heat exchange tubes (201) arranged at intervals and in parallel; the heat exchange tubes (201) are located between the first current collecting pipe (101) and the second current collecting pipe (102); both ends of the heat exchange tubes (201) are respectively arranged in the tube cavities of the first current collecting pipe (101) and the second current collecting pipe (102); and the first current collecting pipe (101) and the second current collecting pipe (102) are both fixedly connected to the heat exchange tubes (201); The first collecting pipe (101) and the second collecting pipe (102) are both provided with two connecting parts (11), and the two connecting parts (11) are respectively provided close to the two ends of the pipe, and a bracket (3) is correspondingly provided on each connecting part (11).

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