Header assembly and heat exchanger

Abstract

The header assembly comprises a header and a welding piece, the header comprises a pipe body and a plurality of first holes, the first holes penetrate through the pipe body, and the first holes are formed in the axial direction of the pipe body at intervals; the collecting pipe further comprises a first part which protrudes out of the pipe body. At least part of the welding piece is connected with the edge of the first hole, the welding piece extends in the axial direction of the pipe body, at least part of the welding piece is connected with the first part, and the first part can fix the welding piece. According to the header assembly, the welding reliability of the header and other parts is improved.

Description

Technical Field

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

[0002] Heat exchangers are currently widely used in heat exchange systems. In the related art, the heat exchanger includes a header and a heat exchange tube. The heat exchange tube is inserted into and connected to the header. The header includes a composite layer with a solder layer, and the header and the heat exchange tube are welded through the composite layer. During the processing, the ratio of the header composite layer is prone to change, resulting in poor welding when the heat exchanger is welded at high temperature. Summary of the invention

[0003] On one hand, the present application provides a header assembly, which improves the welding reliability between the header and other components.

[0004] In one aspect, the present application provides a manifold assembly, comprising: a manifold, the manifold comprising a tube body and a plurality of first holes, the first holes penetrating the tube body, the plurality of first holes being arranged at intervals along the axial direction of the tube body; the manifold further comprising a first portion, the first portion protruding from the tube body;

[0005] A welding piece, at least part of which is connected to the edge of the first hole, the welding piece is extended along the axial direction of the tube body, at least part of which is connected to the first part, and the first part can fix the welding piece.

[0006] The manifold assembly of the embodiment of the present application includes a manifold and a welding part. The manifold includes a tube body, a first hole and a first part. At least a part of the welding part is connected to the edge of the first hole. The manifold can be welded to other components inserted into the first hole through the welding part. In addition, the first part protrudes out of the tube body, at least a part of the welding part is connected to the first part, and the first part can fix the welding part, thereby reducing the displacement or falling of the welding part during the processing, thereby improving the welding reliability between the manifold and other components.

[0007] On the other hand, the present application provides a heat exchanger, which improves the welding reliability between the header and the heat exchange tubes and improves the reliability of the heat exchanger.

[0008] Another aspect of the present application provides a heat exchanger, comprising: a header, the header comprising a tube body and a plurality of first holes, the first holes passing through the tube body, the plurality of first holes being arranged at intervals along the axial direction of the tube body; the header further comprising a first portion, the first portion protruding from the tube body;

[0009] A welding piece, at least part of which is in contact with the edge of the first hole, the welding piece is extended along the axial direction of the tube body, at least part of which is connected to the first part, and the first part can fix the welding piece;

[0010] A heat exchange tube, the end of which is inserted into the first hole and connected to the header. There are multiple heat exchange tubes, which are arranged at intervals along the axial direction of the tube body. The heat exchange tube is welded to the header through the welding piece.

[0011] The heat exchanger of the embodiment of the present application includes a header, a welding part and a heat exchange tube. The header includes a tube body and a first hole. The end of the heat exchange tube is inserted into the first hole and connected to the header. At least part of the welding part is connected to the edge of the first hole. The header and the heat exchange tube are welded together by the welding part. In addition, the first part protrudes out of the tube body, and at least part of the welding part is connected to the first part. The first part can fix the welding part, which reduces the displacement or falling of the welding part during the processing process, improves the welding reliability of the header and the heat exchange tube, and improves the reliability of the heat exchanger.

[0012] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a manifold assembly provided in the present application in one embodiment;

[0014] Figure 2 A schematic diagram of the structure of a manifold provided in the present application in one embodiment;

[0015] Figure 3 A schematic diagram of the structure of a welding part provided in the present application in one embodiment;

[0016] Figure 4 A schematic structural diagram of another embodiment of the header assembly provided by the present application;

[0017] Figure 5 A schematic structural diagram of another embodiment of the header assembly provided by the present application;

[0018] Figure 6 A schematic structural diagram of another embodiment of the header assembly provided by the present application;

[0019] Figure 7 A schematic diagram of the structure of another embodiment of the header provided by the present application;

[0020] Figure 8 A schematic structural diagram of another embodiment of the header assembly provided by the present application;

[0021] Fig. 9 A schematic structural diagram of another embodiment of the header assembly provided by the present application;

[0022] Fig.10A schematic structural diagram of another embodiment of the header provided by the present application;

[0023] Fig.11 A schematic structural diagram of another embodiment of the header provided by the present application;

[0024] Fig.12 A schematic structural diagram of another embodiment of the header provided by the present application;

[0025] Fig.13 A schematic structural diagram of another embodiment of the header provided by the present application;

[0026] Fig.14 A schematic structural diagram of another embodiment of the header provided by the present application;

[0027] Fig.15 A schematic diagram of the structure of a heat exchanger provided in the present application in one embodiment.

[0028] in:

[0029] Heat exchanger 100, header assembly 10, heat exchange tube 30;

[0030] Header 1, pipe body 11, first main body part 111, second main body part 112, first hole 12, first part 13, second part 14;

[0031] Welding piece 2 , clamping portion 21 , second hole 22 .

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0033] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below in conjunction with the accompanying drawings. The embodiments described below are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0035] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0036] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0037] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0038] A header assembly and a heat exchanger according to embodiments of the present invention will be described below with reference to the accompanying drawings.

[0039] The embodiment of the present application provides a manifold assembly 10, comprising: a manifold 1, the manifold 1 comprising a tube body 11 and a plurality of first holes 12, the first holes 12 passing through the tube body 11, and the plurality of first holes 12 being arranged at intervals along the axial direction of the tube body 11; the manifold 1 also comprising a first portion 13, the first portion 13 protruding out of the tube body 11; a welded component 2, at least a portion of the welded component 2 being in contact with an edge of the first hole 12, the welded component 2 extending along the axial direction of the tube body, at least a portion of the welded component 2 being connected to the first portion 13, and the first portion 13 being capable of fixing the welded component 2.

[0040] Specifically, Figure 1-Figure 14 As shown, the manifold assembly 10 includes a manifold 1 and a welding piece 2. The manifold 1 includes a tube body 11 and a plurality of first holes 12. At least a portion of the welding piece 2 is in contact with the edge of the first hole 12. The first hole 12 of the manifold 1 is for facilitating the insertion of other components and the connection with the manifold 1. In some specific embodiments, the first hole 12 can be used for inserting a heat exchange tube 30. The heat exchange tube 30 is inserted into the first hole 12 of the manifold 1. At least a portion of the welding piece 2 is in contact with or abuts against the edge of the first hole 12. The welding piece 2 is located near the first hole 12, so that the heat exchange tube 30 inserted into the first hole 12 can be welded to the manifold 1 through the welding piece 2, thereby improving the welding reliability between the manifold 1 and other components.

[0041] It should be noted that the header 1 and the heat exchange tube 30 are connected through the welding part 2, and the welding part 2 includes solder. The welding part 2 melts after high temperature during the processing. The melted welding part 2 flows circumferentially in the first hole 12 through capillary action to realize the welding connection between the header 1 and the heat exchange tube 30. Specifically, the solder can be a brazing material. The welding part 2 melts at high temperature, so that the header 1 and the heat exchange tube 30 are connected by brazing through the welding part 2. The welding connection between the header 1 and the heat exchange tube 30 is realized by the welding part 2. Compared with the traditional header, the header needs to be a composite header with a solder layer. The ratio of the composite layer of the header is easy to change during the processing, resulting in poor welding during high-temperature welding of the heat exchanger. In this application, the header 1 is welded to other components by bonding the welding part 2 to the header 1. The solder of the welding part 2 is more uniform, and the solder ratio is not easy to change, which improves the reliability of welding between the header 1 and other components.

[0042] In some specific embodiments, the weld 2 may further include a flux. By adding the flux to the weld 2, the step of additionally brushing the flux during furnace welding of the header 1 and the heat exchange tube 30 is reduced, thereby improving the processing efficiency.

[0043] In order to fix the welding part 2, the manifold 1 also includes a first part 13. The first part 13 protrudes from the tube body 11. At least part of the welding part 2 is connected to the first part 13. The first part 13 can fix the welding part 2. The first part 13 can ensure the position of the welding part 2 during the processing, reduce the displacement and falling of the welding part 2 during the processing, and affect the welding of the manifold 1 and other components, thereby improving the reliability of the manifold assembly 10.

[0044] Since the header 1 includes a plurality of first holes 11, and a plurality of first holes 12 are arranged at intervals along the axial direction of the tube body 11, the first holes 11 are used to insert the heat exchange tubes 30, and one first hole 11 corresponds to one heat exchange tube 30. In order to realize the welding between the header 1 and the plurality of heat exchange tubes 30, the welding piece 2 is extended along the axial direction of the tube body 11, so that the header 1 can be better welded with the plurality of heat exchange tubes 30 inserted into the first holes 12, thereby improving the welding reliability of the header assembly 10. Optionally, the first portion 13 is also extended along the axial direction of the tube body 11 to realize the fixation of the welding piece 2, thereby improving the reliability of the header assembly 10.

[0045] It can be understood that the header 1 realizes the welding connection of the heat exchange tube 30 inserted into the first hole 12 through the welding piece 2. The header 1 can be formed by extrusion. Compared with the traditional header, the header is welded to the heat exchange tube through the composite layer of the header. When processing the composite header, it is necessary to go through multiple processes such as bonding the base material and the auxiliary material with welding material to form a composite plate, cutting the composite plate, rolling the composite plate into a tubular shape, and high-frequency welding to form a composite tube. There are many processing steps. The header 1 of the present application can be formed in one piece by extrusion, with fewer processing steps, more convenient processing, and high reliability. Moreover, the traditional composite header is prone to corrosion at the weld joint of high-frequency welding, while the header of the present application can be formed in one piece by extrusion, without welds, and has better corrosion resistance, which is conducive to improving the reliability of the header 1. In addition, the header 1 can be formed by extrusion, and the shape of the header 1 can be more flexible. The first part 13 and the tube body 11 can be formed in one piece by extrusion, which makes the header 1 more convenient to process, improves the firmness of the structure, and further improves the reliability of the header assembly 10.

[0046] In some specific embodiments, the welding piece 2 is in sheet shape and includes a clamping portion 21 . The clamping portion 21 is clamped to the first portion 13 , and at least a portion of the welding piece 2 is in contact with the tube body 11 .

[0047] like Figure 1 and Figure 3-5 As shown, the welding piece 2 is a sheet structure, and the welding piece 2 includes a clamping portion 21, and the clamping portion 21 is clamped to the first portion 13, so that the welding piece 2 can be fixed through the first portion 13, so that the welding piece 2 can be tightly connected to the header 1, and the welding piece 2 will not fall off or shift in position during the processing of the heat exchanger, so that the welding of the header and other components can be better achieved, and the reliability of the header 1 is improved. When the header assembly 1 is processed, the welding piece 2 can be inserted into the header 1 from one end of the tube body 11 in the axial direction. During the insertion of the welding piece 2, the clamping portion 21 is clamped to the first portion 13, and at least part of the welding piece 2 is attached to the tube body 1, completing the assembly of the header assembly 1.

[0048] It can be understood that the clamping portion 21 can be a generally U-shaped structure as shown in the figure, and at least two surfaces of the clamping portion 21 are in contact with the first portion 13, so that the clamping portion 21 is clamped on the first portion 13. The clamping portion 21 can also be other structures, such as L-shaped, etc., which can fix the welding part 2 on the first portion 13 to fix the position of the welding part 2. The shape of the clamping portion 21 is not limited here.

[0049] At least part of the welding part 2 is in contact with the tube body 11. The welding part 2 can be in contact with the tube body 11 and has substantially the same contour as the tube body 11 at the edge of the first hole 12, so that the connection between the welding part 2 and the manifold 1 is tighter. The welding part 2 is in contact with the edge of the first hole 12, so that the welding part 2 can better realize the welding between the manifold 1 and other components inserted into the first hole 12, thereby improving the welding reliability between the manifold 1 and other components.

[0050] like Figure 1 , Figure 3-4 As shown, the welding piece 2 can be fitted with the portion of the tube body 11 along the entire edge of the first hole 12, so that when the welding piece 2 melts at high temperature, the molten solder flows into the periphery of the first hole 12, making the welding of the header 1 and other components more reliable. It can be understood that when the welding piece 2 is fitted with the portion of the tube body 11 along the entire edge of the first hole 12, there can be two first parts 13, and the two first parts 13 are spaced at both ends of the first hole 12 along the circumference of the tube body 11, so that the two ends of the welding piece 2 are clamped on the first part 13, so that the welding piece 2 is better fixed on the first part 13, avoiding the welding piece 2 from being offset or falling during the processing of the heat exchanger, etc., affecting the welding of the header 1 and other components, and improving the welding reliability of the header 1 and other components.

[0051] like Figure 5 As shown, the welding piece 2 can also be fitted with the portion of the tube body 11 near the edge of the first hole 12. During the processing of the heat exchanger, the heat exchanger 100 is placed horizontally (as shown in FIG. Fig.15 As shown in the figure, the manifold 1 is placed horizontally along the axial direction of the tube body 11, the first part 13 is located at the upper end or the upper and lower ends of the manifold 1 in the gravity direction, the welding part 2 is connected to the first part 13, the welding part 2 is located at the upper part of the first hole 12 in the gravity direction, at least part of the welding part 2 is in contact with the edge of the first hole 12, during the welding process, as the welding part 2 melts at high temperature, the molten solder flows downward due to gravity, and due to capillary action, the molten solder fills the circumference of the first hole 12, thereby realizing the welding connection between the heat exchange tube 30 inserted into the first hole 12 and the manifold 1.

[0052] The welding piece 2 is arranged to fit the pipe body 11 at the edge of the part close to the first hole 12, so that the amount of welding piece 2 is reduced, the cost is saved, and when the welding piece 2 is fixed to the header 1, the operation is more convenient, and the processing time is saved. There can be only one first part 13, and one first part 13 is located at the upper part of the gravity direction during the processing of the heat exchanger, so that after the welding piece 2 is fixed at the first part 13, the solder formed by the high-temperature melting of the welding piece 2 flows downward, so as to realize the welding connection between the header 1 and the heat exchange tube 30 inserted into the first hole 12.

[0053] In some specific embodiments, the welding piece 2 includes a plurality of second holes 22 , the second holes 12 penetrate the welding piece 2 , the plurality of second holes 22 are spaced apart along the axial direction of the tube body, and the size of the second holes 22 is the same as the size of the first holes 12 .

[0054] like Figure 3 As shown, the welding piece 2 includes a plurality of second holes 22, and the size of the second holes 22 is the same as that of the first holes 12. When the welding piece 2 is fixed to the manifold 1, the second holes 22 are arranged corresponding to the first holes 12, so that the welding piece 2 fits the manifold 1 more closely, and the manifold 1 is more convenient to process. Moreover, since the second holes 22 of the welding piece 2 fit the first holes 12, the welding piece 2 can better fill the first holes 12 when melted, thereby realizing the connection between other components inserted into the first holes 12 and the manifold 1, and improving the welding reliability between the manifold 1 and other components.

[0055] During the processing of the manifold assembly 10, the unpunched welding part 2 can be first clamped on the manifold 1 so that the welding part 2 is close to the manifold 1, and the second hole 22 is punched on the welding part 2 while the first hole 12 is punched on the manifold 1. Thus, the processing of the manifold assembly 1 is more convenient. Moreover, since the second hole 22 is punched on the welding part 2 while the first hole 12 is punched, the punching groove of the second hole 22 fits with the punching groove of the first hole 12, the welding part 2 can be better fixed on the manifold 1, so that the welding part 2 is more tightly connected to the manifold 1, further improving the position stability of the welding part 2 and improving the reliability of the manifold assembly.

[0056] In some embodiments, the welding piece 2 is strip-shaped, at least part of the welding piece 2 abuts against the first portion 13 , at least part of the first hole 12 has an end in the circumferential direction of the tube body 11 that exceeds the first portion 13 , and the welding piece 2 abuts against at least part of the edge of the first hole 12 .

[0057] like Figure 6-Figure 9 As shown, the welding piece 2 is in the shape of a strip. When the welding piece 2 is assembled with the manifold 1, the strip-shaped welding piece 2 can be placed at the connection between the tube body 11 of the manifold 1 and the first part 13. At least part of the welding piece 2 is in contact with the first part 13, and the position of the welding piece 2 is fixed by the first part 13.

[0058] like Figure 7 As shown, at least part of the end of the first hole 12 in the circumferential direction of the tube body 11 exceeds the first portion 13, and the welding piece 2 abuts against the edge of at least part of the first hole 12, so that the welding piece 2 is close to the edge of the first hole 12. Therefore, after the welding piece 2 is melted at a high temperature, the molten solder can flow downward along the first hole 12 from the end of the first hole 12 in the circumferential direction of the tube body 11, thereby realizing the welding of other components inserted into the first hole 12, thereby improving the welding reliability between the collecting pipe 1 and other components.

[0059] In some specific embodiments, Figure 8 As shown, when the end of the first hole 12 in the circumferential direction of the tube body 11 exceeds the first portion 13, the first portion 13 is located near the middle position of the first hole 12 in the circumferential direction of the tube body 11, and the first portion 13 can be multiple, and the multiple first portions 13 are arranged at intervals along the axial direction of the tube body 11, and the multiple first portions 13 are separated at the first hole 12. In the present application, the header 1 is welded to other components through the welding member 2, the header 1 can be formed by extrusion, and the multiple first portions 13 can be formed integrally with the tube body 1 by extrusion, so that the header 1 is more convenient to process and has high reliability.

[0060] Understandably, in Figure 6 , Figure 7 , Fig. 9 In the illustrated embodiment, the first portion 13 may also be one, and the first portion 13 is arranged to extend along the axial direction of the tube body 11. The first portion 13 is located at an upper position in the gravity direction during the processing of the heat exchanger, so that after the welding part 2 is fixed at the first portion 13, the solder formed by the high-temperature melting of the welding part 2 flows downward to realize the welding connection between the manifold 1 and the heat exchange tube 30 inserted into the first hole 12, and the ends of part of the first holes 12 in the circumferential direction of the tube body 11 exceed the first portion 13, and the welding part 2 abuts against the edge of at least part of the first hole 12, thereby realizing the welding connection between the manifold 1 and other components inserted into the first hole 12 through the welding part 2.

[0061] In some embodiments, the cross section of the first portion 13 perpendicular to the axial direction of the tube body 11 is generally flat, arc-shaped, L-shaped, U-shaped, or triangular.

[0062] Specifically, Figure 1 , Figure 2 , Figure 5-14 As shown, the first portion 13 is generally flat in cross section perpendicular to the axial direction of the tube body 11, and the cross section may also be arc-shaped, triangular-shaped, or broken-line-shaped; Figure 4 As shown, the first portion 13 is generally L-shaped in a cross section perpendicular to the axial direction of the tube body 11, and may also be a generally U-shaped structure. The first portion 13 is arranged in a cross section perpendicular to the axial direction of the tube body 11, so that the welding piece 2 is fixed on the first portion 13, or the welding piece 2 is limited by the first portion 13, so that the welding piece 2 is better fixed on the header 1 during the processing of the header assembly 10, and the position displacement or falling of the welding piece 2 during the processing is avoided, so as to improve the welding reliability of the header assembly and other components.

[0063] It is understandable that the cross section of the first portion 13 perpendicular to the axial direction of the tube body 11 may also be other easily conceivable shapes, and the number of the first portions 13 may be one, two or more. The first portion 13 may be used to fix the position of the weldment 2, and there is no limitation here.

[0064] In some embodiments, the first portion 13 is located radially outside the tube body 11, and the welding part 2 is located radially outside the tube body 11; and / or, the first portion 13 is located radially inside the tube body 11, and the welding part 2 is located radially inside the tube body 11.

[0065] Specifically, Figure 1 , Figure 4-Figure 8 As shown, when the first portion 13 is located on the radially outer side of the tube body 11, the welding piece 2 is also located on the radially outer side of the tube body 11, and the first portion 13 can fix the welding piece 2, so that the welding piece 2 is fixed on the header 1, thereby realizing the welding connection between the header 1 and other components. The header assembly 10 also includes components such as end covers. When assembling the header assembly 10, the end covers can be first installed on both ends of the header 1 in the axial direction to achieve the sealing of the header 1, and then the welding piece 2 can be fixed on the header 1, and can be clamped on the first portion 13 through the clamping portion 21, or the strip welding piece 2 can be placed on the first portion 13, and the welding piece 2 is fixed on the tube body 11 through the first portion 13 to realize the fixed connection between the welding piece 2 and the header 1, and then other components, such as the heat exchange tube 30, are inserted into the header assembly 10, assembled and welded, and the welding connection between the header 1 and other components is realized.

[0066] like Fig. 9 As shown, when the first portion 13 is located on the inner side of the tube body 11 in the radial direction, the welding piece 2 is located on the inner side of the tube body 11 in the radial direction, and the welding piece 2 is clamped between the first portion 13 and the tube body 11 to fix the position of the welding piece 2. The header assembly 10 also includes components such as end covers. When assembling the header assembly 10, the welding piece 2 can be first inserted between the first portion 13 and the tube body 11 to complete the fixed connection between the welding piece 2 and the header 1, and then the end covers are installed at both ends of the header 1 in the axial direction to achieve the sealing of the header 1, and then other components, such as the heat exchange tube 30, are inserted into the header assembly 10, assembled and welded, and the welding connection between the header 1 and other components is achieved.

[0067] It can be understood that when the first portion 13 is located radially inward of the tube body 11, the welding member 2 can be as follows: Fig. 9 The strip shape shown may also be a sheet structure, and the sheet structure welding piece 2 may be bent and clamped between the first portion 13 and the tube body 11 to fix the position of the welding piece 2.

[0068] In some specific embodiments, the first portion 13 may be provided on both the radial inner and outer sides of the tube body 11, and the welding piece 2 may be provided on both the radial inner and outer sides of the tube body 11, so as to further increase the contact area between the welding piece 2 and the manifold 1. Thus, after the welding piece 2 is melted at a high temperature, the manifold 1 and other components inserted into the first hole 12 can be better welded, thereby improving the welding reliability between the manifold 1 and other components.

[0069] In some embodiments, the tube body 11 includes a first main body portion 111 and a second main body portion 112 that are connected to each other. The first main body portion 111 and the second main body portion 112 are an integral structure. The first main body portion 111 is extended along the axial direction of the tube body 11, and the second main body portion 112 is extended along the axial direction of the tube body 11. The first hole 12 is located in the first main body portion 111, and at least part of the welding part 2 is abutted against the first main body portion 111.

[0070] Specifically, Figure 2 , Figure 10-Figure 14 As shown, the tube body 11 includes a first main body 111 and a second main body 112, which are connected to each other to form the tube body 11, the first main body 111 is extended along the axial direction of the tube body 11, and the second main body 112 is extended along the axial direction of the tube body 11, and at least part of the channel of the tube body 11 is enclosed by the first main body 111 and the second main body 112; the first main body 111 and the second main body 112 are an integral structure, and since the manifold 1 can be formed by extrusion, the first main body 111 and the second main body 112 can be formed as a whole by extrusion, thereby improving the strength of the manifold 1. The first hole 12 is located in the first main body 111, and at least part of the welding piece 2 abuts against the first main body 111, thereby, the welding piece 2 contacts the edge of the first hole 12 on the first main body 111, so that the welding piece 2 can be used to realize the welding of the manifold 1 and other components, thereby improving the welding reliability of the manifold.

[0071] In some embodiments, the wall thickness of the first body portion 111 is greater than the wall thickness of the second body portion 112 .

[0072] Specifically, when the heat exchanger 100 is in working state, heat exchange medium flows through the header 10 and the heat exchange tube 30, and heat exchange is achieved through the heat exchange medium. The heat exchange tube 30 and the header 10 expand outward under the pressure of the heat exchange medium. Due to the large inner surface area of ​​the header 1, the pressure it is subjected to is large, resulting in large deformation, especially since the first main body 111 is provided with the first hole 12. When the first main body 111 is deformed, the heat exchange tube 30 connected to the first main body 111 will be torn, resulting in insufficient pressure resistance of the entire heat exchanger 100 and leakage. Since the second main body 112 is not provided with the first hole 12, the impact on the heat exchange tube 30 is small. Therefore, the wall thickness of the first main body 111 can be set to be greater than the wall thickness of the second main body 112. The wall thickness of the first main body 111 is increased, the pressure resistance of the header can be improved, and the wall thickness of the second main body 112 is reduced. Therefore, while ensuring the pressure resistance of the header 1, the material used for the header 1 is reduced, the cost is reduced, and the overall reliability of the header 1 is improved.

[0073] Moreover, the manifold assembly 10 in the present application includes a manifold 1 and a welding part 2. The manifold 1 is welded to other components inserted into the first hole 12 through the welding part 2. The manifold 1 can be formed by extrusion, so that the shape of the manifold 1 can be more flexible. The wall thickness of the first main body 111 of the manifold 1 formed by extrusion is greater than the wall thickness of the second main body 112. The manifold 1 is more convenient to process and has higher reliability.

[0074] In some embodiments, at least one of the first body portion 111 and the second body portion 112 is arc-shaped.

[0075] Specifically, the tube body 11 includes a first main body portion 111 and a second main body portion 112, and at least part of the first main body portion 111 and at least part of the second main body portion 112 form a channel of the tube body 11, and at least one of the first main body portion 111 and the second main body portion 112 is arc-shaped, and the first main body portion 111 can be arc-shaped and the second main body portion 112 can be flat; the first main body portion 111 can be flat and the second main body portion 112 can be arc-shaped; both the first main body portion 111 and the second main body portion 112 can be arc-shaped, and the curvature of the first main body portion 111 and the second main body portion 112 can be the same or different; either one of the first main body portion 111 and the second main body portion 112 can be arc-shaped, and the other can be of other shapes.

[0076] The manifold assembly 10 in the present application includes a manifold 1 and a welding part 2. The manifold 1 is welded to other components inserted into the first hole 12 through the welding part 2. The manifold 1 can be formed by extrusion, so that the shape of the manifold 1 can be more flexible. The shapes of the first main body 111 and the second main body 112 of the manifold 1 formed by extrusion are different. The manifold 1 is more convenient to process and has higher reliability.

[0077] like Fig.11 As shown, the first main body 111 is arc-shaped, and the second main body 112 is flat-plate-shaped, and the formed header 1 is generally a D-shaped structure. Compared with the traditional circular header, the internal volume of the header 1 is reduced, the amount of heat exchange medium used in the heat exchanger is reduced, and the use cost of the heat exchanger is reduced. In addition, the D-shaped header 1 reduces the amount of material used in the header and reduces the material cost. In addition, when the first main body 111 is arc-shaped and the second main body 112 is flat-plate-shaped, the pressure resistance of the header 1 is higher, and the reliability of the header 1 is improved.

[0078] like Fig. 9 , Fig.12 and Fig.13As shown, the first main body 111 is in the shape of a flat plate, and the second main body 112 is in the shape of an arc, and the formed header 1 is generally in a D-shaped structure. Compared with the traditional circular header, the internal volume of the header 1 is reduced, the amount of heat exchange medium used in the heat exchanger is reduced, and the use cost of the heat exchanger is reduced. In addition, the header 1 of the D-shaped structure reduces the amount of material used in the header and reduces the material cost. In addition, when the first main body 111 is in the shape of a flat plate, it is more convenient to punch out the first hole 12 on the first main body 111, making the header 1 more convenient to process.

[0079] like Figure 2 , Figure 7 and Fig.10 As shown, the first main body portion 111 and the second main body portion 112 of the manifold 1 are both arc-shaped, and the curvatures of the first main body portion 111 and the second main body portion 112 are different. The manifold 1 formed is generally an elliptical tube, which reduces the internal volume of the manifold 1 and the amount of heat exchange medium used in the heat exchanger. In addition, the elliptical structure of the manifold 1 reduces the material usage of the manifold and reduces the material cost.

[0080] like Fig.14 As shown, the first main body 111 of the manifold 1 is arc-shaped, and the second main body 112 includes an arc-shape and a flat plate, or the first main body 111 includes an arc-shape and a flat plate, and the second main body 112 is arc-shaped. The manifold of this structure reduces the internal volume of the manifold 1, reduces the amount of heat exchange medium used in the heat exchanger, and reduces the material usage of the manifold, thereby reducing material costs.

[0081] In some embodiments, the wall thickness of the first body portion 111 is greater than the wall thickness of the second body portion 112 , and at least one of the first body portion 111 and the second body portion 112 is arc-shaped.

[0082] The wall thickness of the first main body 111 is greater than that of the second main body 112. The increase in the wall thickness of the first main body 111 can improve the pressure resistance of the heat exchanger and the reliability of the header. The wall thickness of the second main body 112 is reduced, thereby reducing the material used for the header 1 and reducing the cost while ensuring the pressure resistance of the header 1. At least one of the first main body 111 and the second main body 112 is arc-shaped, and the tube body 11 of the header 1 can be of different shapes, which reduces the internal volume of the header 1, reduces the amount of heat exchange medium used in the heat exchanger, reduces the cost of the heat exchanger, and reduces the amount of material used for the header 1 and reduces the material cost. The header assembly 10 in the present application includes a header 1 and a welding part 2. The header 1 can be formed by extrusion, so that the shape of the header 1 can be more flexible. The wall thickness of the first main body 111 formed by extrusion is greater than the wall thickness of the second main body 112. The shapes of the first main body 111 and the second main body 112 formed by extrusion are different, so the header 1 is more convenient to process and has higher reliability.

[0083] In some embodiments, the manifold 1 further includes a second portion 14 , which is located at the connection between the first portion 13 and the first main body portion 111 , and the second portion 14 includes a groove or a protrusion, which extends along the axial direction of the tube body 11 .

[0084] like Fig.10 As shown, the manifold 1 further includes a second portion 14, which is located at the connection between the first portion 13 and the first main body portion 111, and the second portion 14 includes a groove, which extends along the axial direction of the tube body 11, or as shown in FIG. Fig.13 As shown, the second portion 14 includes a protrusion, and the protrusion extends along the axial direction of the tube body 11. The arrangement of the second portion 14 makes it easier for the heat exchange tube 30 to be inserted into the first hole 12.

[0085] Specifically, the heat exchange tube 30 is inserted into the first hole 12 of the header 1 and connected to the header 1 by welding. In order to facilitate the insertion of the heat exchange tube 30 into the header 1, the size of the first hole 12 is generally similar to or slightly larger than the size of the heat exchange tube 30, resulting in a slight deviation in the insertion position or direction when the heat exchange tube 30 is inserted into the header 1, and the heat exchange tube 30 is not easy to insert into the header 1. If the size of the first hole 12 is much larger than the size of the heat exchange tube 30, the gap between the heat exchange tube 30 and the header 1 will be too large, affecting the welding between the header and the heat exchange tube. In the present application, a second part 14 is provided, and the second part 14 includes a groove or a protrusion. When the end of the heat exchange tube 30 in the length direction is inserted into the first hole 12, the groove or the protrusion can guide the inserted heat exchange tube 30, thereby reducing the skewness of the heat exchange tube 30 when inserted into the first hole 12, etc., which is beneficial to the assembly of the heat exchange tube 30 and makes the heat exchanger processing more convenient; moreover, the structural design of the second part 14 makes there is no gap between the heat exchange tube 30 and the header 1, reducing the probability of poor welding and further improving the welding reliability between the header 1 and other components.

[0086] It is understandable that the second portion 14 is not limited to including a groove or a protrusion structure, and can also be other structures that can guide the heat exchange tube 30 inserted into the first hole 12, which is beneficial to the assembly of the heat exchange tube 30, and is not limited here.

[0087] In some embodiments, at least part of the first holes 12 are located at ends of the tube body 11 in the circumferential direction at the first portion 13 .

[0088] like Fig.10 and Fig.13As shown, at least part of the end of the first hole 12 in the circumferential direction of the tube body 11 is located on the first part 13, that is, the edge of the end of the first hole 12 is located on the first part 13, and the notch at the end of the first hole 12 located on the first part 13 can guide the heat exchange tube 30 inserted into the first hole 12, making it more convenient to insert the heat exchange tube 30 into the first hole 12, which is beneficial to the assembly of the heat exchange tube 30, making the heat exchanger processing more convenient, and reducing the gap between the heat exchange tube 30 and the header 1, reducing the probability of poor welding, and further improving the welding reliability between the header 1 and other components.

[0089] In some embodiments, the manifold 1 also includes a second part 14, which is located at the connection between the first part 13 and the first main body part 111, and the second part 14 includes a groove or a protrusion, which extends along the axial direction of the tube body 11, and at least part of the first hole 12 is located at the end of the circumferential direction of the tube body 11 in the first part 13.

[0090] By arranging the second part 14 at the connection between the first part 13 and the first main body part 111, and the end of the first hole 12 in the circumferential direction of the tube body 11 is located at the first part 13, the guiding effect on the heat exchange tube 30 inserted into the first hole 12 is further strengthened, the insertion of the heat exchange tube 30 into the first hole 12 is convenient, and the assembly of the heat exchange tube 30 is facilitated. There is no gap between the heat exchange tube 30 and the header 1, which reduces the probability of poor brazing and further improves the welding reliability between the header 1 and other components.

[0091] The embodiment of the present application also discloses a heat exchanger, including: a header 1, the header 1 includes a tube body 11 and a plurality of first holes 12, the first holes 12 penetrate the tube body 11, and the plurality of first holes 12 are arranged at intervals along the axial direction of the tube body 11; the header 1 also includes a first portion 13, the first portion 13 protrudes from the tube body; a welding part 2, at least part of the welding part 2 is in contact with the edge of the first hole 12, the welding part 2 is extended along the axial direction of the tube body 11, at least part of the welding part 2 is connected to the first portion 13, and the first portion 13 can fix the welding part 2; a heat exchange tube 30, the end of the heat exchange tube 30 is inserted into the first hole 12 and is connected to the header 1, there are a plurality of heat exchange tubes 30, and the plurality of heat exchange tubes 30 are arranged at intervals along the axial direction of the tube body; the heat exchange tube 30 is welded and connected to the header 1 through the welding part 2.

[0092] like Fig.15As shown, the heat exchanger 100 includes a header 1 and a heat exchange tube 30. The header 1 may be the above-mentioned header, or there may be two headers 1. The heat exchange tube 30 is respectively inserted into the header 1 at both ends in the length direction and communicates with the header 1. The heat exchanger 100 also includes a welding member 2. At least part of the welding member 2 is in contact with the edge of the first hole 12. The welding member 2 is used to realize the welding connection between the header 1 and the heat exchange tube 30 inserted into the first hole 12. The heat exchange tube 30 is welded to the header 1 through the welding member 2. Compared with the traditional header, the header needs to be a composite header with a solder layer. The connection with the heat exchange tube 30 is realized through the solder layer outside the header. During the processing, the ratio of the composite layer of the header is easy to change, which leads to poor welding during high-temperature welding of the heat exchanger. The welding member 2 in the present application is welded by bonding the header 1. The solder of the welding member 2 is more uniform, which improves the welding reliability of the header 1 and the heat exchange tube 30, and improves the overall reliability of the heat exchanger.

[0093] It should be noted that the header 1 and the heat exchange tube 30 are connected through the welding part 2, and the welding part 2 includes solder. The solder is melted at high temperature during the processing, and the melted welding part 2 flows circumferentially in the first hole 12 through capillary action to achieve the welding connection between the header 1 and the heat exchange tube 30. Specifically, the solder can be a brazing material, and the welding part 2 is melted at high temperature, so that the header 1 and the heat exchange tube 30 are connected by brazing through the welding part 2. In some specific embodiments, the welding part 2 may also include a brazing agent. By adding a brazing agent to the welding part 2, the step of brushing the brazing agent when the header 1 and the heat exchange tube 30 are furnace-welded is reduced, thereby improving the processing efficiency of the heat exchanger.

[0094] It can be understood that, since there are multiple heat exchange tubes 30, the multiple heat exchange tubes 30 are arranged at intervals along the axial direction of the tube body, and the heat exchange tubes 30 are inserted into the first holes 12. In order to realize the welding of the header 1 and the multiple heat exchange tubes 30, the welding piece 2 is extended along the axial direction of the tube body 11, so that the welding piece 2 can be connected with the edges of the multiple first holes 12, so that the header 1 and the multiple heat exchange tubes 30 inserted into the first holes 12 are welded and connected, thereby improving the welding reliability of the header 1 and further improving the reliability of the heat exchanger 100. Optionally, the first portion 13 is also extended along the axial direction of the tube body 11 to better fix the welding piece 2.

[0095] The heat exchanger 100 of the present application can realize the welding connection between the manifold 1 and the heat exchange tube 30 through the welding part 2, at least part of the welding part 2 is connected to the first part 13, and the welding part 2 is fixed to the manifold 1 through the first part 13, so that during the assembly process, the welding part 2 will not be offset or dropped, etc. The position of the welding part 2 is fixed, which improves the welding reliability of the manifold and improves the overall reliability of the heat exchanger 100.

[0096] It can be understood that the header 1 is welded to the heat exchange tube 30 through the welding piece 2, and the header 1 can be formed by extrusion. Compared with the traditional composite header, the processing steps are reduced, making the header 1 more convenient to process and more reliable. In addition, the traditional composite header is prone to corrosion at the weld joint of high-frequency welding, while the header of the present application can be formed in one piece by extrusion, without welds, and has better corrosion resistance, which is conducive to improving the reliability of the header 1. In addition, the header 1 can be formed by extrusion, and the shape of the header 1 can be more flexible. The first part 13 and the tube body 11 can be formed in one piece by extrusion, making the header 1 more convenient to process and improving the firmness of the structure, further improving the reliability of the header 1, and improving the reliability of the heat exchanger.

[0097] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or unit from another entity or unit, and do not necessarily require or imply any actual relationship or order between these entities or units. In this article, "plurality" means at least two, unless otherwise clearly and specifically defined.

[0098] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0100] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0101] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A header assembly, characterized in that: include: A header, the header comprising a tube body and a plurality of first holes, the first holes passing through the tube body, the plurality of first holes being arranged at intervals along the axial direction of the tube body; the header further comprising a first portion, the first portion protruding from the tube body; A welding piece, at least part of which is connected to the edge of the first hole, the welding piece is extended along the axial direction of the tube body, at least part of which is connected to the first part, and the first part can fix the welding piece.

2. The header assembly according to claim 1, characterized in that The welding piece is in sheet shape and comprises a clamping portion, the clamping portion is clamped to the first portion, and at least a portion of the welding piece is in contact with the tube body.

3. The header assembly according to claim 2, characterized in that The welding piece includes a plurality of second holes, which penetrate through the welding piece, are arranged at intervals along the axial direction of the tube body, and have the same size as that of the first holes.

4. The header assembly according to claim 1, characterized in that The welding piece is in a strip shape, at least a portion of the welding piece abuts against the first portion, and the welding piece abuts against at least a portion of an edge of the first hole.

5. The header assembly according to any one of claims 1 to 4, characterized in that: The cross section of the first portion perpendicular to the axial direction of the tube body is generally flat, arc-shaped, L-shaped, U-shaped, or triangular.

6. The header assembly according to any one of claims 1 to 4, characterized in that: The first portion is located on the radially outer side of the tube body, and the welding piece is located on the radially outer side of the tube body; And / or, the first portion is located on the inner side of the tube body in the radial direction, and the welding piece is located on the inner side of the tube body in the radial direction.

7. The header assembly according to claim 1, characterized in that The tube body includes a first main body portion and a second main body portion connected to each other, the first main body portion and the second main body portion are an integral structure, the first main body portion is extended along the axial direction of the tube body, the second main body portion is extended along the axial direction of the tube body, the first hole is located in the first main body portion, and at least part of the welding part is in contact with the first main body portion.

8. The header assembly according to claim 7, characterized in that The wall thickness of the first main body portion is greater than the wall thickness of the second main body portion, and / or at least one of the first main body portion and the second main body portion is arc-shaped.

9. The header assembly according to claim 7 or 8, characterized in that: The manifold further includes a second portion, the second portion is located at the connection between the first portion and the first main body portion, the second portion includes a groove / protrusion, and the groove / protrusion extends along the axial direction of the tube body; And / or, at least part of the first holes are located at the end of the tube body in the circumferential direction of the first portion.

10. A heat exchanger, characterized in that: include: A header, the header comprising a tube body and a plurality of first holes, the first holes passing through the tube body, the plurality of first holes being arranged at intervals along the axial direction of the tube body; the header further comprising a first portion, the first portion protruding from the tube body; A welding piece, at least part of which is in contact with the edge of the first hole, the welding piece is extended along the axial direction of the tube body, at least part of which is connected to the first part, and the first part can fix the welding piece; A heat exchange tube, the end of which is inserted into the first hole and connected to the header. There are multiple heat exchange tubes, which are arranged at intervals along the axial direction of the tube body. The heat exchange tube is welded to the header through the welding piece.

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