Heat exchanger, header assembly and machining method of heat exchanger
By setting a fixed plate in the heat exchanger to limit the displacement of the distribution tube, the problem of bending and deformation of the distribution tube caused by the long collector pipe is solved, and the uniform distribution effect of the refrigerant is improved.
Patent Information
- Application Number
- CN202311831773.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-06-27
AI Technical Summary
When the current collector of the heat exchanger is long, the distribution tube is prone to bend and deform, resulting in uneven distribution of refrigerant and poor distribution effect.
By providing a fixing plate, the dispensing tube is arranged through the first hole of the fixing plate, and the fixing plate is limited to the limit or fixedly connected to the heat exchange tube, limiting the displacement of the dispensing tube and ensuring its straightness in the collecting tube.
The straightness of the distribution pipe in the collector pipe is improved, ensuring the consistent position of the refrigerant distribution holes, and improving the distribution effect.
Smart Images
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Abstract
Description
Technical Field
[0001] This application relates to the field of heat exchangers, and particularly to a heat exchanger, a header assembly, and a processing method of a heat exchanger. Background Art
[0002] In order to improve the heat exchange efficiency, it is necessary to evenly distribute the refrigerant entering the heat exchanger. Usually, a distribution pipe is inserted into the header of the heat exchanger, and the refrigerant will enter the flat tube through the holes on the distribution pipe. However, when the header of the heat exchanger is relatively long, the distribution pipe will also be very long, and the distribution pipe is generally relatively thin, which will easily cause the bending deformation of the distribution pipe. During the furnace brazing process of the heat exchanger, the distribution pipe is more likely to be deformed by heat, and the actual position of the distribution holes deviates from the designed position, resulting in uneven distribution of the refrigerant and poor distribution effect. Summary of the Invention
[0003] To solve the above problems, a first aspect of this application provides a heat exchanger, including A header; A fixing plate, the fixing plate is arranged inside the header, and the fixing plate includes a first hole which is arranged along the thickness direction of the fixing plate; A distribution pipe, at least part of the distribution pipe is arranged inside the header, and the distribution pipe passes through the first hole; A heat exchange pipe, part of the heat exchange pipe is inserted into the header, and the heat exchange pipe is in limit cooperation or fixedly connected with the fixing plate.
[0004] This application provides a fixing plate, the distribution pipe passes through the fixing plate, the fixing plate is in limit cooperation or fixedly connected with the heat exchange pipe, the heat exchange pipe is inserted into the header, the displacement of the fixing plate is restricted by the heat exchange pipe, and further the displacement of the distribution pipe is restricted by the first hole of the fixing plate, reducing the bending of the distribution pipe inside the header, improving the straightness of the distribution pipe, and improving the distribution effect.
[0005] This application also discloses a header assembly, including A header; A first groove part, at least one first groove part is arranged on the pipe wall of the header, and in the length direction of the header, the first groove part further includes a first end face; A second groove part, at least one second groove part is arranged on the pipe wall of the header, and in the length direction of the header, the second groove part further includes a second end face, and the plane where the second end face is located coincides with or is parallel to the plane where the first end face is located; A distribution pipe, at least part of the distribution pipe is arranged inside the header; A first fixing plate, the first fixing plate is arranged in the first groove part, and the first fixing plate includes a first circular arc hole, and at least part of the distribution pipe is arranged in the first circular arc hole; A second fixing plate, the second fixing plate is arranged in the second groove part, and the second fixing plate includes a second circular arc hole, and at least part of the distribution pipe is arranged in the second circular arc hole.
[0006] A first groove portion and a second groove portion are formed in the header. The first fixing plate and the second fixing plate are respectively inserted into the header from the first groove portion and the second groove portion. At least part of the distribution pipe is arranged in the first circular arc hole of the first fixing plate, and at least part of the distribution pipe is arranged in the second circular arc hole of the second fixing plate. By restricting the radial displacement of the distribution pipe by the first fixing plate and the second fixing plate, the straightness of the distribution pipe is ensured, and the distribution effect is improved.
[0007] The present application also discloses a processing method for a heat exchanger, including the following steps: Insert the fixing plate through the distribution pipe; Fix the fixing plate at a preset position on the distribution pipe; Insert the fixing plate and at least part of the distribution pipe into the header; Insert the heat exchange pipe into the header in a plug-in fit; Limit the heat exchange pipe and the fixing plate in a limiting fit or fixedly connect them.
[0008] The fixing plate is inserted through the first hole at a preset position on the distribution pipe, and the fixing plate and the distribution pipe are fixedly connected to form a component. Then, the component is inserted into the header. Further, the heat exchange pipe is installed. The heat exchange pipe is first inserted into the heat exchange pipe groove on the header. After penetrating the pipe wall of the header, the end of the heat exchange pipe contacts the fixing plate and is in a limiting fit. The assembled entire heat exchanger is subjected to furnace welding, and the coating will weld the fixing plate to the header, the heat exchange pipe, and the distribution pipe. The fixing plate serves as a fixing bracket to limit the deformation of the distribution pipe in the radial and circumferential directions. Therefore, the straightness of the distribution pipe in the header can be ensured, and the position of the distribution holes on the distribution pipe is consistent with the designed position, thereby improving the distribution effect.
[0009] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 Schematic cross-section of the heat exchanger according to Embodiment 1 of the present application Figure 1 ; Figure 2 Schematic diagram of the fixing plate according to Embodiment 1 of the present application; Figure 3 Schematic cross-section of the heat exchanger according to Embodiment 1 of the present application Figure 2 ; Figure 4 Schematic diagram of the fixing plate according to Embodiment 2 of the present application; Figure 5 Schematic cross-section of the heat exchanger according to Embodiment 2 of the present application; Figure 6 is Figure 5 enlarged view of part A in Figure 7Schematic diagram of the fixing plate in Embodiment 3 of the present application; Figure 8 Schematic diagram of Embodiment 3 of the present application; Figure 9 Schematic diagram of the fixing plate in Embodiment 4 of the present application; Figure 10 Schematic diagram of the fixing plate in Embodiment 5 of the present application Figure 1 ; Figure 11 Schematic diagram of the fixing plate in Embodiment 5 of the present application Figure 2 ; Figure 12 Schematic cross - section of the heat exchanger in Embodiment 5 of the present application Figure 1 ; Figure 13 Schematic cross - section of the heat exchanger in Embodiment 5 of the present application Figure 2 ; Figure 14 Schematic diagram of Embodiment 7 of the present application Figure 1 ; Figure 15 Schematic diagram of Embodiment 7 of the present application Figure 2 ; Reference numerals: Header 1; First groove part 11; First end face 111; Second groove part 12; Second end face 121; Heat exchange tube groove 13 Fixing plate 2; First hole 21; First body 22; Limiting part 23; Angular part 231; Horizontal part 2311, Limiting surface 2312; Platform 232; Notch 233; Second body 24; Second hole 25; First fixing plate 26; First arc hole 261; Second fixing plate 27; Second arc hole 271; Distribution pipe 3; Distribution hole 31 Heat exchange tube 4; First side face 41; Second side face 42; The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Embodiment
[0011] For a better understanding of the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0012] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.
[0013] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise.
[0014] It should be understood that the term " / and / " used herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.
[0015] It should be noted that the orientation terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the angles shown in the drawings and should not be construed as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that one component is connected "above" or "below" another component, it can not only be directly connected "above" or "below" another component, but also be indirectly connected "above" or "below" another component through an intermediate component. Embodiment 1
[0016] The embodiments of the present application provide a heat exchanger, including a header 1; a fixing plate 2, the fixing plate 2 is arranged in the header 1, the fixing plate 2 includes a first hole 21, and the first hole 21 is arranged along the thickness direction of the fixing plate 2; a distribution pipe 3, at least part of the distribution pipe 3 is arranged in the header 1, and the distribution pipe 3 passes through the first hole 21; a heat exchange pipe 4, part of the heat exchange pipe 4 is inserted into the header 1, and the heat exchange pipe 4 is in limit fit or fixedly connected with the fixing plate 2.
[0017] In this embodiment, the fixing plate 2 is arranged inside the header 1 and contacts the tube wall of the header 1 in the radial direction. At least part of the fixing plate 2 is fixedly connected to the header 1, so that the position of the fixing plate 2 in the radial direction of the header 1 is fixed. The distribution pipe 3 passes through the first hole 21 of the fixing plate 2 and remains fixed to the fixing plate 2. Thus, the fixing plate 2 serves as a support, restricting the displacement of the distribution pipe 3 in the radial direction, thereby improving the straightness of the distribution pipe 3 in the header. At the same time, the fixing plate 2 is in limit cooperation or fixedly connected with the heat exchange pipe 4, preventing the distribution pipe 3 from twisting around the axis due to stress changes during furnace passing. In the axial direction, both ends of the header 1 include end caps, and the end caps are fixedly connected to the distribution pipe 3. With this arrangement, the displacement and circumferential rotation of the distribution pipe 3 in the radial and axial directions are restricted, ensuring that the distribution holes on the distribution pipe 3 are consistent with the designed positions, thereby improving the distribution effect. In other embodiments, the fixing plate may not contact the header and only restrict the displacement of the distribution pipe through limit cooperation with the heat exchange pipe.
[0018] In this embodiment, the surface of the fixing plate 2 has a coating. Before furnace passing, the fixing plate 2 is in limit cooperation with the header 1, the distribution pipe 3, and the heat exchange pipe 4. After furnace passing and welding, the coating forms a connection between the fixing plate 2, the heat exchange pipe 4, the header 1, and the distribution pipe 3, forming a fixed connection relationship. However, due to process defects, it cannot be guaranteed that each fixing plate 2 can maintain a stable fixed connection relationship, and there may be situations such as virtual soldering and detachment, but it still belongs to the protection scope of this application. At the same time, limit cooperation between the fixing plate 2 and the heat exchange pipe 4, such as clamping, plugging, abutting, etc., can achieve the same effect of restricting the bending of the distribution pipe 3 and improving the straightness as the fixed connection.
[0019] In the width direction of the heat exchange pipe 4, the heat exchange pipe 4 includes a first side surface 41 and a second side surface 42. The fixing plate 2 includes a first body 22. The thickness direction of the first body 22 is parallel to the length direction of the header 1, and at least part of the first body 22 is fixedly connected to the tube wall of the header 1. The fixing plate 2 further includes a limiting portion 23. The limiting portion 23 is connected to the first body 22, and the limiting portion 23 is in limit cooperation or fixedly connected with the first side surface 41 and / or the second side surface 42.
[0020] In this embodiment, at least a part of the heat exchange tube 4 is inserted into the heat exchange tube groove 13 of the header 1. The part inserted into the header 1 includes a first side surface 41 and a second side surface 42. The first side surface 41 and the second side surface 42 are arranged in the width direction of the heat exchange tube 4. The first body 22 of the fixing plate 2 is semicircular or fan-shaped. The edge of the first body 22 contacts the inner wall of the header 1. The limiting part 23 is integrally formed or fixedly connected with the first body 22. The limiting part 23 is in contact with the first side surface 41 and / or the second side surface 42 of the heat exchange tube 4. With this arrangement, the radial displacement of the fixing plate 2 in the header 1 is restricted. Since the heat exchange tube 4 has been inserted into the heat exchange tube groove 13 of the header 1, the heat exchange tube 4 is in limiting cooperation or fixedly connected with the limiting part 23. The first side surface 41 and the second side surface 42 of the heat exchange tube 4 can limit the rotation of the fixing plate 2, thereby restricting the torsion of the distribution pipe 3. In other embodiments, the first body 22 can be of other shapes, as long as the first body 22 abuts against the inner wall of the header 1 and cannot move radially.
[0021] Optionally, the limiting part 23 includes a corner part 231. The corner part 231 extends from the first body 22 in a direction away from the first hole 21. The corner part 231 is arranged between the tube wall of the header 1 and the heat exchange tube 4. The heat exchanger is provided with at least two fixing plates 2 and at least two heat exchange tubes 4. The corner part 231 of one fixing plate 2 is fixedly connected or abuts against the first side surface 41 of one heat exchange tube 4, and the corner part 231 of the other fixing plate 2 is fixedly connected or abuts against the second side surface 42 of the other heat exchange tube 4.
[0022] In this embodiment, the lower part of the fixing plate 2 is a semi-circular first body 22, which is fixedly connected to the inner wall of the header 1. There is a certain distance between the upper part of the fixing plate 2 and the end of the heat exchange tube 4, which does not affect the flow of the refrigerant to the heat exchange tube 4. The upper part of the first body 22 extends in a direction away from the first hole 21 with a corner part 231. The corner part 231 is arranged in the gap between the header 1 and the heat exchange tube 4. The corner part 231 includes an arc surface and a limiting surface 2312 that maintain the same radius as the inner wall of the header 1. The arc surface contacts the inner wall of the header 1. The limiting surface 2312 is arranged on the side of the limiting part 23 close to the heat exchange tube 4 and contacts the heat exchange tube 4 to limit the rotation of the fixing plate 2. After through-hole soldering, the original contact fit becomes a fixed connection. In this embodiment, at least two fixing plates 2 should be arranged in each header 1. The two fixing plates 2 are installed in the header 1 in mirror symmetry. At the same time, at least two heat exchange tubes 4 that cooperate with the fixing plates 2 are also required. The limiting surface 2312 of one fixing plate 2 is fixedly connected or abutted against the first side surface 41 of one heat exchange tube 4, and the limiting surface 2312 of the other fixing plate 2 is fixedly connected or abutted against the second side surface 42 of the other heat exchange tube 4. One of the two fixing plates 2 restricts the distribution pipe 3 from twisting in the clockwise direction, and the other restricts the distribution pipe 3 from twisting in the counterclockwise direction. The two cooperate to restrict the twisting of the distribution pipe 3. The corner part 231 of the first body 22 cooperates to restrict the radial displacement of the distribution pipe 3, thereby ensuring the straightness of the distribution pipe 3. In other embodiments, two mirror-symmetrical fixing plates 2 are taken as a group, and multiple groups of fixing plates 2 can be arranged in the header 1, and the effect is better.
[0023] Optionally, the fixing plate 2 further includes at least one second hole 25, and at least one second hole 25 is arranged on the first body 22 and / or the second body 24.
[0024] In this embodiment, there is a preset distance LB between the upper part of the first body 22 of the fixing plate 2 and the end of the heat exchange tube 4, and LB≥1mm, which is convenient for the installation of the distribution pipe 3. At the same time, the gap between the fixing plate 2 and the heat exchange tube 4 does not affect the flow of the refrigerant and ensures the distribution effect. Embodiment 2
[0025] The difference from Embodiment 1 is that, in this embodiment, optionally, the limiting part 23 includes two corner parts 231. The two corner parts 231 extend from the first body 22 in a direction away from the first hole 21, and the two corner parts 231 are arranged between the tube wall of the header 1 and the heat exchange tube 4. The heat exchanger is provided with at least one fixing plate 2. One of the two corner parts 231 of at least one fixing plate 2 is fixedly connected or abutted against the first side surface 41 of the heat exchange tube 4, and the other is fixedly connected or abutted against the second side surface 42 of the same heat exchange tube 4.
[0026] In this embodiment, the two corner portions 231 are respectively fixedly connected or abutted against the first side surface 41 and the second side surface 42 of the heat exchange tube 4, and the installation difficulty is relatively low. The limiting function of the distribution pipe 3 can be realized by only one fixing plate 2.
[0027] Others are the same as those in Embodiment 1. Embodiment 3
[0028] The difference from Embodiment 1 or Embodiment 2 is that, in this embodiment, optionally, at least one corner portion 231 includes a horizontal portion 2311. The horizontal portion 2311 is provided at the end of the corner portion 231 and extends along the thickness direction of the first body 22. The horizontal portion 2311 is provided between the pipe wall of the header 1 and the heat exchange tube 4, and the horizontal portion 2311 is fixedly connected or abutted against the first side surface 41 and / or the second side surface 42 of the heat exchange tube 4.
[0029] In this embodiment, the end of the corner portion 231 extends in the thickness direction of the first body 22 to form a horizontal portion 2311 perpendicular to the plane of the heat exchange tube 4. The horizontal portion 2311 is arranged in the gap between the heat exchange tube 4 and the header 1, in contact with the heat exchange tube 4 on one side and the pipe wall of the header 1 on the other side; in other embodiments, when the first body 22 can already limit the radial displacement of the fixing plate 2 in the header 1, the horizontal portion 2311 can only be in contact with the first side surface 41 and / or the second side surface 42 of the heat exchange tube 4; after passing through the furnace, a fixed connection relationship is formed between the fixing plate 2, the heat exchange tube 4 and the header 1. The horizontal portion 2311 can be fixedly connected to the corner portion 231 or bent from the corner portion 231 in the direction of the thickness of the header 1 itself. The horizontal portion 2311 has a preset length LC, and LC is less than or equal to the distance K between two adjacent heat exchange tubes 4 on the header 1. With this setting, in the thickness direction of the heat exchange tube 4, the contact range of the horizontal portion 2311 is larger, and the limiting cooperation between the heat exchange tube 4 and the fixing plate 2 is more reliable, facilitating the formation of a stable fixed connection relationship after passing through the furnace.
[0030] Others are the same as those in Embodiment 1. Embodiment 4
[0031] Optionally, the limiting portion 23 includes a platform 232. The platform 232 extends in the thickness direction of the first body 22. The limiting portion 23 further includes a notch 233. The notch 233 penetrates through the platform 232, and a part of the heat exchange tube 4 is arranged in the notch 233.
[0032] In this embodiment, the limiting portion 23 includes a platform 232 along the thickness direction of the first body 22, which can be formed by bending the first body 22 in the thickness direction or formed in other ways. Along the thickness direction of the fixing plate 2, the platform 232 has a preset width WE, and WE is less than or equal to the distance K between two adjacent heat exchange tubes 4 on the header 1. A notch 233 adapted to the cross-sectional shape of the heat exchange tube 4 is provided on the platform 232. The heat exchange tube 4 is first inserted into the header 1, and the end of the heat exchange tube 4 is inserted into and cooperates with the notch 233 to form a fixed connection after passing through the furnace. With this arrangement, the cooperation between the notch 233 and the heat exchange tube 4 is more stable and reliable, and the limiting effect on the distribution pipe 3 is better.
[0033] Others are the same as in Embodiment 1. Embodiment 5
[0034] The difference from Embodiment 4 is that, optionally, the fixing plate 2 further includes a second body 24, the second body 24 is arranged in parallel with the first body 22, and the second body 24 and the first body 22 are connected to both sides of the platform 232.
[0035] In this embodiment, the fixing plate 2 is composed of the first body 22, the second body 24 and the platform 232. The first body 22 and the second body 24 are arranged in parallel. The first body 22 and the second body 24 are respectively in contact with or fixedly connected to the tube wall of the header 1. A notch 233 is provided on the platform 232 for inserting the heat exchange tube 4. Both the first body 22 and the second body 24 are in contact with the tube wall of the header 1, so that the contact area between the fixing plate 2 and the header 1 is larger, and the fixed connection is more firm after passing through the furnace, and the limiting effect on the distribution pipe 3 is more stable and reliable.
[0036] Second holes 25 are provided on the first body 22 and the second body 24 for the refrigerant to flow through, improving the distribution effect.
[0037] Others are the same as in Embodiment 4. Embodiment 6
[0038] A header 1 assembly includes The header 1; The first groove portion 11, at least one first groove portion 11 is provided on the tube wall of the header 1. In the length direction of the header 1, the first groove portion 11 further includes a first end face 111; The second groove portion 12, at least one second groove portion 12 is provided on the tube wall of the header 1. In the length direction of the header 1, the second groove portion 12 further includes a second end face 121, and the plane where the second end face is located coincides with or is parallel to the plane where the first end face is located; The distribution pipe 3, at least part of the distribution pipe 3 is arranged inside the header 1; The first fixing plate 26 is disposed in the first groove portion 11. The first fixing plate 26 includes a first circular arc hole 261, and at least a part of the distribution pipe is disposed in the first circular arc hole 261; The second fixing plate 27 is disposed in the second groove portion 12. The second fixing plate 27 includes a second circular arc hole 271, and at least a part of the distribution pipe is disposed in the second circular arc hole 271.
[0039] In this embodiment, two groove portions, i.e., the first groove portion 11 and the second groove portion 12, are opened at the same position of the header 1. The first fixing plate 26 and the second fixing plate 27 are respectively inserted into the header 1 from the first groove portion 11 and the second groove portion 12. The first circular arc hole 261 of the first fixing plate 26 is engaged with the pipe wall of the distribution pipe 3, and the diameter is equal to the outer diameter of the distribution pipe 3. The second circular arc hole 271 of the second fixing plate 27 is engaged with the pipe wall of the distribution pipe 3. The engaging positions of the first circular arc hole 261 and the second circular arc hole 271 on the distribution pipe 3 are located on both sides of the distribution pipe, restricting the radial displacement of the distribution pipe 3 from two directions, ensuring the straightness of the distribution pipe 3 and improving the distribution effect; in other embodiments, in order to avoid reducing the strength of the header caused by opposite-side grooving, the first groove portion and the second groove portion can be arranged in a staggered manner. Embodiment 7
[0040] A processing method of a heat exchanger includes the following steps: Pass the fixing plate 2 through the distribution pipe 3; Fix the fixing plate 2 at a preset position on the distribution pipe 3; Insert the fixing plate 2 and at least a part of the distribution pipe 3 into the header 1; Insert the heat exchange tube 4 into the header 1 in a plug-in fit; Limit the heat exchange tube 4 to be in fit with or fixedly connected to the fixing plate 2.
[0041] In this embodiment, a coating needs to be added to the surface of the fixing plate 2. The coating can form a welded fixation at the contact parts of the fixing plate 2 with the distribution pipe 3, the heat exchange tube 4, and the header 1 in the furnace. Pass the fixing plate 2 through the first hole 21 to a preset position on the distribution pipe 3, and fixedly connect the fixing plate 2 and the distribution pipe 3 to form a component. Then insert this component into the header 1, and further install the heat exchange tube 4. The heat exchange tube 4 is first inserted into the heat exchange tube 4 groove on the header 1. After penetrating the pipe wall of the header 1, the end of the heat exchange tube 4 contacts the fixing plate 2 and is in a limiting fit. The assembled entire heat exchanger is subjected to furnace welding. The coating will weld the fixing plate 2 to the header 1, the heat exchange tube 4, and the distribution pipe 3 together. The fixing plate 2 serves as a fixing bracket, restricting the deformation of the distribution pipe 3 radially and circumferentially. Therefore, during the furnace welding process, the straightness of the distribution pipe 3 in the header can be ensured, and the position of the distribution holes 31 on the distribution pipe 3 can be ensured to be consistent with the designed position, thereby improving the distribution effect.
[0042] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application respectively.
Claims
1. A heat exchanger, characterized in that, including a header (1); a fixing plate (2) disposed within the header (1), the fixing plate (2) including a first hole (21) provided along the thickness direction of the fixing plate (2); a distribution pipe (3) at least partially disposed within the header (1), the distribution pipe (3) passing through the first hole (21); a heat exchange pipe (4) partially inserted into the header (1), the heat exchange pipe (4) being in limit fit or fixedly connected with the fixing plate (2).
2. The heat exchanger according to claim 1, wherein in the width direction of the heat exchange pipe (4), the heat exchange pipe (4) includes a first side surface (41) and a second side surface (42); the fixing plate (2) includes a first body (22), the thickness direction of the first body (22) being parallel to the length direction of the header (1), at least a part of the first body (22) being fixedly connected to the pipe wall of the header (1); the fixing plate (2) further includes a limiting portion (23) connected to the first body (22), the limiting portion (23) being in limit fit or fixedly connected with the first side surface (41) and / or the second side surface (42) of the heat exchange pipe (4).
3. The heat exchanger according to claim 2, wherein The limiting portion (23) includes a corner portion (231) extending from the first body (22) away from the first hole (21), the corner portion (231) being disposed between the pipe wall of the header (1) and the heat exchange pipe (4); the heat exchanger is provided with at least two fixing plates (2) and at least two heat exchange pipes (4), the corner portion (231) of one fixing plate (2) being fixedly connected to or abutting against the first side surface (41) of one heat exchange pipe (4), and the corner portion (231) of another fixing plate (2) being fixedly connected to or abutting against the second side surface (42) of another heat exchange pipe (4).
4. A heat exchanger according to claim 2, characterized in that, The limiting portion (23) includes two corner portions (231) extending from the first body (22) away from the first hole (21), the two corner portions (231) being disposed between the pipe wall of the header (1) and the heat exchange pipe (4); the heat exchanger is provided with at least one fixing plate (2), one of the two corner portions (231) of at least one fixing plate (2) being fixedly connected to or abutting against the first side surface (41) of the heat exchange pipe (4), and the other being fixedly connected to or abutting against the second side surface (42) of the same heat exchange pipe (4).
5. A heat exchanger according to claim 3 or 4, characterized in that, At least one of the corner portions (231) includes a horizontal portion (2311) which is provided at the end of the corner portion (231) and extends along the thickness direction of the first body (22). The horizontal portion (2311) is provided between the tube wall of the header (1) and the heat exchange tube (4), and is fixedly connected or abutted against the first side surface (41) and / or the second side surface (42) of the heat exchange tube.
6. The heat exchanger according to claim 2, wherein, The limiting portion (23) includes a platform (232) which extends in the thickness direction of the first body (22). The limiting portion (23) further includes a notch (233) which penetrates through the platform (232), and a part of the heat exchange tube (4) is arranged in the notch (233).
7. A heat exchanger according to claim 6, wherein The fixing plate (2) further includes a second body (24) which is arranged in parallel with the first body (22), and the second body (24) and the first body (22) are connected to both sides of the platform (232).
8. A heat exchanger according to claim 2 or 7, characterized in that, The fixing plate (2) further includes at least one second hole (25), and at least one of the second holes (25) is arranged on the first body (22) and / or the second body (24).
9. A manifold assembly, characterized in that, Comprising a header (1); a first groove portion (11), at least one of the first groove portions (11) is arranged on the tube wall of the header (1). In the length direction of the header (1), the first groove portion (11) further includes a first end face (111); a second groove portion (12), at least one of the second groove portions (12) is arranged on the tube wall of the header (1). In the length direction of the header (1), the second groove portion (12) further includes a second end face (121), and the plane where the second end face is located coincides with or is parallel to the plane where the first end face is located; a distribution pipe (3), at least a part of the distribution pipe (3) is arranged in the header (1); a first fixing plate (26), the first fixing plate (26) is arranged in the first groove portion (11), and the first fixing plate (26) includes a first circular arc hole (261), and at least a part of the distribution pipe is arranged in the first circular arc hole (261); a second fixing plate (27), the second fixing plate (27) is arranged in the second groove portion (12), and the second fixing plate (27) includes a second circular arc hole (271), and at least a part of the distribution pipe is arranged in the second circular arc hole (271).
10. A processing method of a heat exchanger, characterized in that, Comprising the following steps: Thread the fixing plate (2) through the distribution pipe (3); Fix the fixing plate (2) at a preset position of the distribution pipe (3); Insert the fixing plate (2) and at least a part of the distribution pipe (3) into the header (1); Plug and cooperate the heat exchange tube (4) with the header (1); Limit or fixedly connect the heat exchange tube (4) with the fixing plate (2).