Clamping device for heat exchangers

Abstract

The application relates to the heat exchanger production and processing technical field, in particular to a clamping device for a heat exchanger, which comprises a clamping component and a clamping part, the clamping component comprises a first clamping piece and a second clamping piece, the first clamping piece is located on the outside of the heat exchanger in a first direction, the second clamping piece is located on the outside of the heat exchanger in the first direction, at least part of the clamping part is elastic, at least part of the clamping part is fixed on the first clamping piece and the second clamping piece, so as to press the heat exchanger between the first clamping piece and the second clamping piece, the interval between at least one set of adjacent clamping parts located in an end area is smaller than the interval between a set of adjacent clamping parts located in a middle area. The application provides a clamping device for a heat exchanger, which can reduce the welding defect problem at the heat exchange pipe and fin connecting position, and improve the reliability of the heat exchanger welding.

Description

Technical Field

[0001] This application relates to the field of heat exchanger manufacturing and processing technology, and in particular to a clamping device for heat exchangers. Background Technology

[0002] In related technologies, the fins and heat exchange tubes of a heat exchanger are connected by welding to reduce contact thermal resistance, improve the heat exchange efficiency, and enhance the reliability of the heat exchanger. However, during the welding process, uneven thermal expansion and contraction can easily lead to detachment or poor welding at the connection points between the heat exchange tubes and fins, affecting the reliability of the heat exchanger. Summary of the Invention

[0003] This application provides a clamping device for heat exchangers, which can reduce welding problems at the connection points of heat exchange tubes and fins and improve the reliability of heat exchanger welding.

[0004] The clamping device for a heat exchanger according to an embodiment of this application includes: a clamping component, the clamping component including a first clamping member and a second clamping member, defining the width direction of the heat exchanger as a first direction, defining the length direction of the heat exchanger as a second direction, the first clamping member being located outside the heat exchanger in the first direction, the first clamping member extending along the second direction, the second clamping member being located outside the heat exchanger in the first direction, the second clamping member extending along the second direction, and the first clamping member and the second clamping member being arranged opposite to each other in the first direction;

[0005] A clamping member, at least a portion of which is elastic, is fixed to the first clamping member and the second clamping member to press the heat exchanger between the first clamping member and the second clamping member, wherein the spacing between at least one set of adjacent clamping members located in the end region is less than the spacing between a set of adjacent clamping members located in the middle region.

[0006] The clamping device for a heat exchanger according to embodiments of this application includes a clamping member, at least a portion of which is elastic. At least a portion of the clamping member is fixed to the first clamping member and the second clamping member to press the heat exchanger between the first clamping member and the second clamping member, clamping the heat exchanger in a first direction. The spacing between at least one set of adjacent clamping members located in the end region is smaller than the spacing between a set of adjacent clamping members located in the middle region, making the clamping members tighter in the end region. This better reduces welding problems that occur when welding heat exchange tubes and fins, improves welding reliability, and thus improves the reliability of the heat exchanger. Attached Figure Description

[0007] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 A schematic diagram of a clamping device for a heat exchanger provided in an embodiment of this application;

[0009] Figure 2 A schematic diagram of another clamping device for a heat exchanger provided in an embodiment of this application;

[0010] Figure 3 This is a schematic diagram of the structure of a first elastic element provided in an embodiment of this application.

[0011] Figure 4 This is a schematic diagram of another first elastic element provided in an embodiment of this application;

[0012] Figure 5 This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of this application;

[0013] Figure 6 This is a schematic diagram of another clamping device for a heat exchanger provided in an embodiment of this application.

[0014] Figure 7 This is a schematic diagram of another clamping device for a heat exchanger provided in an embodiment of this application.

[0015] The above figures include the following reference numerals:

[0016] Heat exchanger 1, heat exchange tube 11, fins 12, manifold 13,

[0017] Clamping component 2, first clamping member 21, second clamping member 22, first fixing part 23, second fixing part 24, first support member 25, second support member 26.

[0018] Clamping component 3, connecting component 31, first elastic element 32, elastic segment 321, first clamping segment 322, second clamping segment 323, elastic part 324, second elastic element 33, third elastic element 34.

[0019] First support block 4, second support block 5. Detailed Implementation

[0020] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0021] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This application embodiment describes a clamping device for a heat exchanger, used for machining a heat exchanger 1. It includes a clamping component 2 and a clamping component 3. The clamping component 2 includes a first clamping member 21 and a second clamping member 22. The width direction of the heat exchanger 1 is defined as the first direction, and the length direction of the heat exchanger 1 is defined as the second direction. For ease of understanding, the first direction is... Figure 1 The Y direction shown is the second direction. Figure 1In the X direction shown, the first clamping member 21 is located outside the heat exchanger 1 in the first direction and extends along the second direction. The second clamping member 22 is located outside the heat exchanger 1 in the first direction and extends along the second direction. The first clamping member 21 and the second clamping member 22 are arranged opposite to each other in the first direction. At least a portion of the clamping member 3 is elastic and is fixed to the first clamping member 21 and the second clamping member 22 to press the heat exchanger 1 between the first clamping member 21 and the second clamping member 22. The spacing between at least one set of adjacent clamping members 3 located in the end region is smaller than the spacing between a set of adjacent clamping members 3 located in the middle region.

[0024] The heat exchanger 1 includes heat exchange tubes 11, fins 12, and a manifold 13. In the first direction Y, the fins 12 are located between adjacent heat exchange tubes 11. Multiple heat exchange tubes 11 are spaced apart along the first direction Y, and multiple fins 12 are spaced apart along the first direction Y. The ends of the heat exchange tubes 11 along their length are connected to the manifold 13. This heat exchanger can be applied in the refrigeration, heating, ventilation, and air conditioning (HVAC) field. The applicant has found that, because the heat exchanger requires welding, in some embodiments, one of the heat exchange tubes 11 and fins 12 is provided with a solder layer. During welding, the solder layer melts, causing the thickness of the heat exchange tubes 11 or fins 12 to decrease, and the distance between the heat exchange tubes 11 and fins 12 to increase. This may cause problems such as detachment or poor welding at the welded positions of the heat exchange tubes 11 and fins 12. During the welding process of the heat exchanger 1, the tubes expand when heated and contract when cooled. The heat exchange tubes 11 and adjacent fins 12 located in the middle region can contract synchronously. Therefore, the heat exchange tubes 11 located in the middle region... The gap between heat pipe 11 and fin 12 will not increase during the welding process. However, in the area near the manifold 13, that is, in the end areas on both sides of the length direction of the heat exchanger 1, the heat pipe 11 cannot freely shrink inward due to the restriction of the connection between the end of the heat pipe 11 and the manifold 13, resulting in uneven shrinkage. The gap between the heat pipe 11 and fin 12 increases. Therefore, the heat pipe and fin 12 are prone to detachment and poor soldering near the manifold 13 (the end area of ​​the heat exchanger 1 in the X direction), which will affect the heat exchange performance and service life of the heat exchanger 1.

[0025] This application provides a clamping device for a heat exchanger, specifically, such as... Figures 1 to 7 As shown, the first clamping member 21 and the second clamping member 22 are respectively disposed on both sides of the heat exchanger 1 in the first direction Y and are in contact with the heat exchanger 1. The first clamping member 21 and the second clamping member 22 enable the clamping member 3 to be fixed to the outer periphery of the first clamping member 21 and the second clamping member 22, making it easier to fix the clamping member 3. The first clamping member 21 extends along the second direction and the second clamping member 22 extends along the second direction, so that multiple clamping members 3 can be disposed in the second direction.

[0026] At least a portion of the clamping member 3 is elastic. The clamping member 3 is fixed at least a portion to the first clamping member 21 and the second clamping member 22 in the first direction to compress the heat exchanger 1 in the first direction. Therefore, when the heat exchanger 1 is being welded, the clamping member 3 has an elastic portion to press the heat exchanger 1 in the first direction. When a certain gap is generated between the heat exchange tube 11 and the fin 12 during welding, the clamping member 3 can press the heat exchanger 1 in the first direction Y, so that the first clamping member 21 and the second clamping member 22 are brought closer to each other, reducing the gap between the heat exchange tube 11 and the fin 12. This reduces the separation between the fin 12 and the heat exchange tube 11 due to contraction in the first direction, reduces problems such as detachment and poor welding at the welding position of the heat exchange tube 11 and the fin 12, and improves the reliability of the heat exchanger 1.

[0027] Furthermore, the spacing between at least one set of adjacent clamping members 3 located in the end region is smaller than the spacing between a set of adjacent clamping members 3 located in the middle region. The clamping members 3 in the end region are more tightly clamped than those in the middle region. That is, the spacing between multiple clamping members 3 in the end region in the second direction is smaller than the spacing between multiple clamping members 3 in the middle region. This can provide more points of force application and more effectively fix the fins 12 and heat exchange tubes 11 in the end region. This makes the clamping force on the heat exchanger 1 portion in the end region in the first direction greater than the clamping force on the portion in the middle region in terms of unit length. This makes the connection between the heat exchange tubes 11 and fins 12 in the end region of the heat exchanger 1 tighter, reduces the spacing between the fins 12 and heat exchange tubes 11 in the end region, thereby better reducing welding defects that occur during welding, improving the stability and reliability of welding, and improving the reliability of the heat exchanger.

[0028] The clamping device for heat exchangers in this embodiment of the application provides clamping members 3 on the first clamping member 21 and the second clamping member 22. At least a portion of the clamping members 3 is elastic to clamp the heat exchanger 1 in a first direction. The spacing between at least one set of adjacent clamping members 3 located in the end region is smaller than the spacing between a set of adjacent clamping members 3 located in the middle region, making the clamping members 3 tighter in the end region. This increases the clamping force on the heat exchanger 1 in the end region, thereby reducing welding problems that occur when welding the heat exchange tube 11 or fins 12, improving welding reliability, and thus improving the reliability and service life of the heat exchanger 1.

[0029] The clamping device for heat exchangers in this application embodiment can be set on the heat exchanger 1 after the heat exchanger 1 is assembled and before the heat exchanger 1 is welded. During the welding process, the clamping device is used to press the heat exchanger 1 in the first direction to solve problems such as detachment and poor welding at the welding position of the heat exchange tube 11 and the fin 12. After the heat exchanger 1 is welded, the clamping device is removed.

[0030] Furthermore, one end of the clamping member 3 in the first direction is connected to the first clamping member 21, and the other end of the clamping member 3 in the first direction is connected to the second clamping member 22. The clamping member 3 has elasticity in the first direction to apply a pre-tightening force to the heat exchanger 1 in the first direction. The clamping member 3 brings the first clamping member 21 and the second clamping member 22 closer together, thereby pressing the heat exchanger 1 in the first direction, reducing problems such as weld failure and poor welding during the welding process, and improving the reliability of the heat exchanger 1.

[0031] Alternatively, the elastic portion of the clamping member 3 is disposed on at least one side in the first direction, that is, the elastic portion of the clamping member 3 is connected to at least one of the first clamping member 21 or the second clamping member 22, and the elastic portion of the clamping member 3 is elastic in the first direction to press the heat exchanger, so as to reduce problems such as weld failure and poor welding during the welding process and improve the reliability of the heat exchanger 1.

[0032] In some embodiments, clamping components 3 may be provided only in the end region to reduce the number of clamping components 3 and lower costs.

[0033] In some embodiments, the length of the end region in the second direction is b, the length of the heat exchanger 1 in the second direction is a, and b < 0.3a.

[0034] Specifically, such as Figure 5 As shown, the dimension of the end region in the second direction is b, and the length of the heat exchanger 1 in the second direction is a. By setting the dimension of the end region in the second direction and limiting the ratio of the end region to the overall length of the heat exchanger 1, b < 0.3a, at least a certain number of clamping components 3 are clamped to the heat exchanger 1 within the end region of the preset range. This solves the welding problem of the heat exchanger 1 caused by the stress during welding in the end region, thereby reducing problems such as weld failure and poor welding during welding and improving the reliability of the heat exchanger 1.

[0035] It is understandable that the end regions are distributed on both sides of the heat exchanger 1 in the second direction X, and the middle region is between the two end regions. The end regions correspond to the end of the heat exchange tube 11 that is close to the manifold 13.

[0036] In some embodiments, such as Figure 1 and Figure 6 As shown, the clamping component 3 also includes a connecting component 31. One end of the connecting component 31 is connected to the first clamping member 21, and the other end of the connecting component 31 is connected to the second clamping member 22. At least a portion of the connecting component 31 is fixed to the outer periphery of the first clamping member 21 and the second clamping member 22 to press the heat exchanger 1 in a first direction.

[0037] Specifically, one end of the connecting component 31 in the first direction is connected to the first clamping member 21, and the other end of the connecting component 31 in the first direction (i.e., the end away from the first clamping member 21) is connected to the second clamping member 22. The connecting component 31 can be fixed to the outer periphery of the first clamping member 21 and the second clamping member 22 in the first direction to press the heat exchanger 1 in the first direction. This facilitates the fixing of the heat exchange tube 11 and the fins 12 before welding the heat exchanger 1, reduces the positional offset before welding, improves welding reliability, and reduces welding problems caused by the increased spacing between the heat exchange tube 11 and the fins 12 during the welding process, thereby improving the reliability of the heat exchanger 1.

[0038] The number of connecting parts 31 can be multiple, and the multiple connecting parts 31 are spaced apart along the second direction to press the heat exchanger 1 at multiple positions.

[0039] In some specific embodiments, the connecting component 31 can be, for example, steel wire, iron wire, or binding strap, to bind and fix the outer periphery of the heat exchanger 1 in the first direction, thereby reducing the displacement of the heat exchanger 1 in position before welding. This is not a limitation.

[0040] In some embodiments, such as Figure 1 and Figure 2 As shown, the clamping component 3 includes a first elastic element 32, which is located in the end region. One end of the first elastic element 32 is connected to the first clamping member 21, and the other end of the first elastic element 32 is connected to the second clamping member 22. The first elastic element 32 extends along a first direction.

[0041] Specifically, the first elastic member 32 extends along a first direction, and at least a portion of the first elastic member 32 is elastic. The first elastic member 32 applies an elastic force in the first direction to the first clamping member 21 and the second clamping member 22 to bring the first clamping member 21 and the second clamping member 22 closer to each other, so that the heat exchanger 1 is pressed, thereby reducing the relative displacement of the heat exchange tube 11 and fins 12 of the heat exchanger 1 during welding, reducing the spacing between the heat exchange tube 11 and fins 12, improving the reliability of welding, and thus improving the reliability and service life of the heat exchanger 1.

[0042] The first elastic member 32 includes an elastic segment 321, a first clamping segment 322, and a second clamping segment 323. The elastic segment 321 extends along a first direction. One end of the elastic segment 321 is connected to the first clamping segment 322, and the other end of the elastic segment 321 is connected to the second clamping segment 323. The first clamping segment 322 and the second clamping segment 323 face the heat exchanger 1. The first clamping segment 322 is in contact with the outer periphery of the first clamping member 21, and the second clamping segment 323 is in contact with the outer periphery of the second clamping member 22. The elastic segment 321 brings the first clamping segment 322 and the second clamping segment 323 closer to each other in the first direction to press the heat exchanger 1, improve the reliability of welding, and thus improve the service life of the heat exchanger 1.

[0043] Specifically, the first elastic element 32 can be a threaded spring extending in the first direction, or a generally C-shaped spring sheet, or an arc-shaped strip, or of course, other shapes; or, the elastic segment 321 in the first elastic element 32 is at least partially elastic, and the first clamping segment 322 and the second clamping segment 323 are rigid elements to press the heat exchanger 1. The elastic segment 321 can be a threaded spring extending in the first direction, or a generally C-shaped spring sheet, or an arc-shaped strip, or of course, other shapes.

[0044] In some embodiments, such as Figure 2 As shown, a third mounting hole (not shown) is provided on the first clamping member 21, and one end of the first elastic member 32 extends into the third mounting hole so that the first elastic member 32 is directly and detachably connected to the first clamping member 21, thereby eliminating the need for other components to fix it, simplifying the structure of the clamping device and reducing costs, and improving the convenience of installing and removing the elastic member.

[0045] In some embodiments, such as Figure 2 As shown, a fourth mounting hole is provided on the second clamping member 22, and the other end of the first elastic member 32 extends into the fourth mounting hole, so that the first elastic member 32 is directly and detachably connected to the second clamping member 22, thereby eliminating the need for other components to fix it, simplifying the structure of the clamping device and reducing costs, and improving the convenience of installing and removing the elastic member.

[0046] In some embodiments, the number of first elastic members 32 in the end region is greater than the number of first elastic members 32 in the middle region. Since the spacing of at least one set of clamping members 3 in the end region in the second direction is less than the spacing of one set of clamping members 3 in the middle region, that is, the spacing between the first elastic members 32 in the end region is less than the spacing of the first elastic members 32 in the middle region, the number of first elastic members 32 in the end region is greater than the number of first elastic members 32 in the middle region, so that the clamping force on the heat exchanger 1 in the end region over a predetermined length is greater than the clamping force on the heat exchanger 1 in the middle region over a predetermined length, thereby making the heat exchange tube 11 and fin 12 in the end region of the heat exchanger 1 more tightly packed, reducing problems such as detachment and poor welding of the heat exchange tube 11 and fin 12 during the welding process, and improving the reliability of the heat exchange tube 11 and fin 12 during welding.

[0047] like Figure 4 As shown, the first elastic member 32 is at least partially a rigid member. The first elastic member 32 includes an elastic portion 324 located at both ends of the first elastic member 32 in a first direction, with the elastic portion 324 facing the heat exchanger 1.

[0048] The first elastic member 32 extends along the first direction. Part of the first elastic member 32 is a rigid member. The first elastic member 32 is provided with elastic parts 324 at both ends in the first direction. The clamping member 3 is a rigid member in the middle position. The end of the first elastic member 32 in the length direction is provided with an elastic part 324. One end of the elastic part 324 is in contact with or connected to the first clamping member 21, and the other end of the elastic part 324 on the other side of the first direction is in contact with or connected to the second clamping member 22. This achieves the clamping of the heat exchanger 1 from both sides of the first direction with a preset pressure, reducing the positional movement between the heat exchange tube 11 and the fins 12 before welding the heat exchanger 1, which affects the welding efficiency and reliability, and improves the reliability of the heat exchanger.

[0049] In some embodiments, such as Figure 1 As shown, the clamping component 2 also includes a first fixing part 23, which is disposed on the first clamping member 21. The first fixing part 23 is connected to one end of the first elastic member 32 to fix one end of the first elastic member 32 on the first clamping member 21, thereby improving the stability of the connection between the first elastic member 32 and the first clamping member 21.

[0050] Furthermore, the first fixing part 23 can be detachably connected to the first elastic member 32. For example, the first fixing part 23 is provided with a first mounting hole (not shown), and one end of the first elastic member 32 extends into the first mounting hole, thereby realizing the detachable connection between the first clamping member and the first elastic member 32, so as to facilitate the installation and removal of the first elastic member 32.

[0051] Furthermore, the first fixing part 23 and the first clamping member 21 are separately arranged. A first groove (not shown) is provided at one end of the first fixing part 23 facing the first clamping member 21. The first fixing part 23 is engaged with the first clamping member 21 through the first groove, thus completing the detachable connection between the first fixing part 23 and the first clamping member 21. The first fixing part 23 is movable relative to the first clamping member 21 in a second direction, and the first elastic member 32 is detachably connected to the first fixing part 23, thereby facilitating the installation and removal of the first fixing part 23 and the first elastic member 32. The first groove also facilitates the adjustment of the position of the first fixing part 23 on the first clamping member 21, and consequently, the adjustment of the position of the first elastic member 32 on the first clamping member 21. The number of first elastic members 32 and the position of the first elastic members 32 in the first direction can be increased as needed to adjust the clamping force on the heat exchanger 1 per unit length, improving welding reliability and thus extending the service life of the heat exchanger 1. Correspondingly, a bolt can also be provided. The first fixing part 23 is provided with a first threaded hole. The bolt is threadedly connected to the first threaded hole of the first fixing part 23. The bolt extends into the first groove and contacts the first clamping member 21 in the first groove. Then, by removing the bolt, it is convenient to move the first fixing part 23 and the first elastic member 32 in the second direction. By tightening the bolt to contact the bolt with the first clamping member 21, the position of the first fixing part 23 on the first clamping member 21 is fixed, and the first elastic member 32 is kept relatively fixed relative to the first clamping member 21 during the welding process, thereby improving the stability during welding.

[0052] In some embodiments, the first fixing part 23 and the first clamping member 21 are integrally formed to improve the structural strength of the connection between the first fixing part 23 and the first clamping member 21.

[0053] In some embodiments, the clamping member 2 further includes a second fixing part 24, which is disposed on the second clamping member 22 and connected to the other end of the first elastic member 32. The second fixing part 24 is disposed on the second clamping member 22 to fix one end of the first elastic member 32 (the end away from the first clamping member 21 in a first direction) on the second clamping member 22, thereby improving the stability of the connection between the first elastic member 32 and the second fixing part 24. Furthermore, the second fixing part 24 can also be detachably connected to the first elastic member 32. For example, the second fixing part 24 is provided with a second mounting hole, and one end of the first elastic member 32 extends into the second mounting hole, thereby realizing the detachable connection between the second mounting hole and the first elastic member 32, so as to facilitate the disassembly of the first elastic member 32.

[0054] Furthermore, the second fixing part 24 and the second clamping member 22 are separately provided. A second groove (not shown) is provided at one end of the second fixing part 24 facing the second clamping member 22. The second clamping member 22 is engaged in the second groove to achieve a detachable connection between the second fixing part 24 and the second clamping member 22. The second fixing part 24 is movable relative to the second clamping member 22 in a second direction, and the first elastic member 32 is detachably connected to the second fixing part 24, thereby facilitating the installation and removal of the second fixing part 24 and the first elastic member 32. The second groove also facilitates the adjustment of the position of the second fixing part 24 on the second clamping member 22, and consequently, the adjustment of the position of the first elastic member 32 on the second clamping member 22. The number of first elastic members 32 and the position of the first elastic members 32 in the first direction can be increased as needed to adjust the clamping force on the heat exchanger 1 per unit length, improving welding reliability and thus extending the service life of the heat exchanger 1. Correspondingly, a bolt can also be provided. The second fixing part 24 is provided with a second threaded hole. The bolt is threadedly connected to the second threaded hole of the second fixing part 24. The bolt extends into the second groove and contacts the second clamping member 22 in the second groove. Then, by removing the bolt, it is convenient to move the second fixing part 24 and the first elastic member 32 in the second direction. By tightening the bolt to contact the bolt with the second clamping member 22, the position of the second fixing part 24 on the second clamping member 22 is fixed. This allows for flexible setting of the position of the first elastic member 32 on the second clamping member 22 and maintains the first elastic member 32 relatively fixed relative to the second clamping member 22 during the welding process, thereby improving the stability during welding.

[0055] Furthermore, the second fixing part 24 and the second clamping member 22 are integrally formed, which improves the structural strength of the connection between the second fixing part 24 and the second clamping member 22.

[0056] like Figure 4 and Figure 5 As shown, in some embodiments, the distance between the two ends of the first elastic member 32 in the first direction is L, and the dimension of the heat exchanger 1 in the first direction is H, where 0.90H < L < 0.99H. It can be understood that this refers to the distance between the two ends of the first elastic member 32 connected to the heat exchanger 1 or the clamping member 2. That is, in the first direction, the distance between the end face of the first clamping segment 322 facing the second clamping segment 323 and the end face of the second clamping segment 323 facing the first clamping segment 322 in the first direction.

[0057] Specifically, the spacing of the first elastic element 32 in the first direction is smaller than the size of the heat exchanger 1 in the first direction, so that when the first elastic element 32 is fixed on the first clamping member 21 and the second clamping member 22, the first elastic element 32 can provide a pre-tightening force in the first direction to press the heat exchanger 1. During the welding process of the heat exchanger 1, the heat exchange tube 11 and the fin 12 are clamped, thereby reducing the relative movement of the heat exchange tube 11 and the fin 12 during the welding process, reducing the spacing between the heat exchange tube 11 and the fin 12, improving the reliability of the welding, and increasing the service life of the heat exchanger 1.

[0058] Optionally, the spacing L can be 0.91H, 0.92H, 0.93H, 0.95H, 0.97H, or 0.98H.

[0059] like Figure 6 As shown, in some embodiments, the clamping member 3 includes a second elastic member 33, which is located in a first direction on the side of the first clamping member 21 adjacent to the second clamping member 22, and the second elastic member 33 abuts against the first clamping member 21.

[0060] Specifically, one end of the second elastic member 33 abuts against the first clamping member 21, and the other end of the second elastic member 33 contacts or connects to the heat exchanger 11 to press the heat exchange tube 11 and fins 12 of the heat exchanger 1. By setting the second elastic member 33, the second elastic member 33 presses the heat exchanger 1 in the first direction from one side of the first clamping member 21 so that the fins 12 and heat exchange tube 11 of the heat exchanger 1 maintain good contact during the welding process, reduce the gap between the fins 12 and heat exchange tube 11, and thus improve the welding reliability.

[0061] like Figure 6 As shown, in some embodiments, the clamping member 3 includes a third elastic member 34, which is located in the first direction on the side of the second clamping member 22 adjacent to the first clamping member 21, and abuts against the second clamping member 22. Specifically, one end of the third elastic member 34 abuts against the second clamping member 22, and the other end of the third elastic member 34 contacts or is connected to the heat exchanger 11 to press the heat exchange tube 11 and fins 12 of the heat exchanger 1. By providing the third elastic member 34, the third elastic member 34 presses the heat exchanger 1 in the first direction from one side of the second clamping member 22, so that the fins 12 and heat exchange tube 11 of the heat exchanger 1 maintain good contact during the welding process, reducing the gap between the fins 12 and heat exchange tube 11, thereby improving the stability and efficiency of welding.

[0062] In some embodiments, the clamping member 3 includes a second elastic element 33 and a third elastic element 34. By providing the second elastic element 33 and the third elastic element 34, the second elastic element 33 presses the heat exchanger 1 from one side of the first clamping member 21, and the third elastic element 34 presses the heat exchanger 1 from the other side of the second clamping member 22, thereby pressing the heat exchanger 1 from both sides in the first direction, so that the fins 12 and the heat exchange tubes 11 of the heat exchanger 1 maintain good contact during the welding process, reduce the gap between the fins 12 and the heat exchange tubes 11, reduce problems such as desoldering and poor welding that occur when welding the heat exchange tubes 11 and the fins 12, and improve the reliability of the welding.

[0063] It should be noted that the structures of the second elastic element 33 and the third elastic element 34 can be the same or different. For example, they can be springs, C-shaped spring sheets, generally Z-shaped elastic plates, generally π-shaped elastic plates, or other structures with elastic properties that can provide cushioning. No limitation is imposed here. The positions of the second elastic element 33 and the third elastic element 34 can be interchanged. For example, the third elastic element 34 can be located on the side of the first clamping member 21 adjacent to the second clamping member 22 in the first direction, and the third elastic element 34 abuts against the first clamping member 21. The second elastic element 33 can be located on the side of the second clamping member 22 adjacent to the first clamping member 21 in the first direction, and the second elastic element 33 abuts against the second clamping member 22.

[0064] Furthermore, the connecting component 31 can be fixed to the outer peripheral surfaces of the first clamping member 21, the second clamping member 22, and the heat exchanger 1 to fix the first clamping member 21, the second clamping member 22, and the heat exchanger 1 in the first direction. Through the further fixation of the connecting component 31, and in conjunction with the second elastic member 33 and the third elastic member 34, a pre-tightening force is provided to the heat exchanger 1 in the first direction to maintain the compression of the heat exchange tube 11 and the fins 12 during the welding process, reduce the gap between the fins 12 and the heat exchange tube 11, reduce problems such as detachment and poor welding that occur during the welding of the heat exchange tube 11 and the fins 12, improve the reliability of the welding, and thus improve the reliability of the heat exchanger 1.

[0065] In some embodiments, a certain number of connecting parts 31 can be individually fixed to the outer peripheral surface of the heat exchanger 1 to fix the body of the heat exchanger 1, thereby reducing the impact on welding efficiency and reliability caused by the movement of the heat exchange tube 11 and fins 12 before welding the heat exchanger 1.

[0066] like Figure 6As shown, in some embodiments, a second elastic element 33 or a first support block 4 is provided in the middle region. During the welding of the heat exchanger 1, the heat exchange tubes 11 and fins 12 in the middle region of the heat exchanger 1 can shrink towards the center of the heat exchanger 1 simultaneously when heated. As a result, the distance between the heat exchange tubes 11 and fins 12 in the middle region will not increase, and the problems of detachment and poor welding are relatively few. Therefore, a second elastic element 33 or a first support block 4 with a larger spacing can be provided in the middle region to provide a certain support or fixation for the middle region. At the same time, it can also simplify the structure of the clamping device in the middle region, reduce manufacturing costs and assembly difficulty, and improve production efficiency.

[0067] Furthermore, when only the first support block 4 is provided, before the second elastic member 33 is deformed by pressure, the size of the first support block 4 in the first direction is the same as the size of the second elastic member 33, so that the first support block 4 supports and fixes the heat exchanger 1, so as to fix the heat exchanger 1 before welding, and can also provide a certain degree of clamping force on the heat exchanger 1 in the first direction.

[0068] Furthermore, a second elastic element 33 and a first support block 4 can be provided in the intermediate region. For example, the second elastic element 33 and the first support block 4 can be alternately spaced in the second direction, or arranged relatively spaced on both sides of the intermediate region in the second direction to press and support the intermediate region so that the heat exchange tube 11 and the fin 12 in the intermediate region do not separate. At the same time, it can also simplify the structure of the clamping device in the intermediate region, reduce manufacturing costs and assembly difficulty, and improve production efficiency.

[0069] In some embodiments, a third elastic element 34 or a second support block 5 is provided in the middle region. In the middle region of the heat exchanger 1, the heat exchange tube 11 and the fins 12 can shrink towards the middle of the heat exchanger 1 simultaneously. As a result, the distance between the heat exchange tube 11 and the fins 12 in the middle region will not increase during the welding process, and the problems of detachment and poor welding are relatively few. Therefore, a third elastic element 34 or a second support block 5 with a larger spacing can be provided in the middle region to provide a certain support or fixation for the middle region. The structure of the clamping device in the middle region of the heat exchanger 1 can be simplified, the manufacturing cost and assembly difficulty can be reduced, and the production efficiency can be improved.

[0070] Furthermore, when only the second support block 5 is provided, compared to before the third elastic member 34 is deformed under pressure, the second support block 5 has the same size in the first direction as the third elastic member 34, so that the second support block 5 supports and fixes the heat exchanger 1 so as to assemble the heat exchanger 1 before welding, and can also provide a certain degree of clamping force on the heat exchanger 1 in the first direction.

[0071] Furthermore, a third elastic element 34 or a second support block 5 can be provided in the intermediate region. For example, the third elastic element 34 and the second support block 5 can be alternately spaced in the second direction, or arranged relatively spaced on both sides of the intermediate region in the second direction, so as to press and support the intermediate region, so that the heat exchange tube 11 and the fin 12 in the intermediate region do not separate. At the same time, it can also simplify the structure of the clamping device in the intermediate region, reduce manufacturing costs and assembly difficulty, and improve production efficiency.

[0072] In some embodiments, a first support block 4 is provided in the middle region on one side of the first direction, and a second support block 5 is provided in the middle region on the other side.

[0073] The clamping device for a heat exchanger according to this embodiment of the invention supports the middle region of the heat exchanger 1 by respectively providing a first support block 4 and a second support block 5 in the middle region on both sides of the first direction, so as to prevent the heat exchange tube 11 and fins 12 from separating during welding and reduce costs. Alternatively, a second elastic element 33 and a third elastic element 34 are provided in the middle region on both sides of the first direction to press the middle region of the heat exchanger 1 tightly, so as to prevent the heat exchange tube 11 and fins 12 from separating during welding, simplifying the structure of the clamping device and reducing costs.

[0074] Furthermore, a second elastic element 33 can be provided in the middle region of one side of the first direction, and a second support block 5 can be provided in the middle region of the other side to press the middle region of the heat exchanger 1. Alternatively, a third elastic element 34 can be provided in the middle region of one side of the first direction, and a first support block 4 can be provided in the middle region of the other side to reduce the displacement of the heat exchange tube 11 and fins 12 during welding, so that the heat exchange tube 11 and fins 12 do not separate, simplifying the structure of the clamping device and reducing costs.

[0075] like Figure 6 As shown, in some embodiments, the spacing between adjacent second elastic members 33 located in the end region in the second direction is d1, and the spacing between adjacent second elastic members 33 or second support blocks 5 located in the middle region in the second direction is d2, and d1 < d2 < 2d1.

[0076] The clamping device for heat exchangers in this embodiment of the application sets the spacing between the second elastic members 33 in the end region to be smaller than the spacing between the second elastic members 33 or the first support block 4 in the middle region in the second direction, so that the second elastic members 33 in the end region are relatively denser, thereby reducing welding problems caused by excessive spacing between the heat exchange tube 11 and fin 12 in the end region during welding. The second elastic members 33 or the first support block 4 in the middle region are relatively sparse, thereby reducing the number of second elastic members 33 or the first support block 4 in the middle region, keeping the heat exchange tube 11 and fin 12 in the middle region from separating, reducing costs and improving processing efficiency.

[0077] In some embodiments, the distance between adjacent third elastic members 34 located in the end region in the second direction is d3, and the distance between adjacent third elastic members 34 or second support blocks 5 located in the middle region in the second direction is d4, and d3 < d4 < 2d3.

[0078] The clamping device for heat exchangers in this embodiment of the application sets the spacing between the third elastic members 34 in the end region to be smaller than the spacing between the third elastic members 34 or the second support blocks 5 in the middle region in the second direction, so that the third elastic members 34 in the end region are relatively denser, so as to avoid welding problems caused by excessive spacing between the heat exchange tubes 11 and fins 12 in the end region during welding, and the third elastic members 34 or the second support blocks 5 in the middle region are relatively sparse, so as to reduce the number of third elastic members 34 or the second support blocks 5, keep the heat exchange tubes 11 and fins 12 in the middle region from separating, reduce costs, and improve processing efficiency.

[0079] In some embodiments, the distance between adjacent second elastic members 33 located in the end region in the second direction is d1, the distance between adjacent second elastic members 33 or second support blocks 5 located in the middle region in the second direction is d2, and d1 < d2 < 2d1; the distance between adjacent third elastic members 34 located in the end region in the second direction is d3, and the distance between adjacent third elastic members 34 or second support blocks 5 located in the middle region in the second direction is d4, and d3 < d4 < 2d3.

[0080] Specifically, a first support block 4 can be set in the middle area of ​​one side of the first direction, and a second support block 5 can be set in the middle area of ​​the other side to support the middle area of ​​the heat exchanger 1, thereby reducing the displacement of the heat exchange tube 11 and fin 12 during welding, preventing the heat exchange tube 11 and fin 12 from separating, simplifying the structure of the clamping device, and reducing costs.

[0081] Alternatively, a second elastic element 33 can be provided in the middle region on one side of the first direction, and a third elastic element 34 can be provided in the middle region on the other side to press the middle region of the heat exchanger 1, thereby reducing the displacement of the heat exchange tube 11 and fin 12 during welding, preventing the heat exchange tube 11 and fin 12 from separating, simplifying the structure of the clamping device, and reducing costs.

[0082] The clamping device for a heat exchanger in this embodiment of the application sets the spacing between the second elastic members 33 in the end region on one side of the first direction to be smaller than the spacing between the second elastic members 33 in the middle region or the first support block 4 in the second direction, so that the second elastic members 33 in the end region are relatively more densely packed. The spacing between the third elastic members 34 in the end region on the other side of the first direction is smaller than the spacing between the third elastic members 34 in the middle region or the second support block 5 in the second direction, so that the third elastic members 34 in the end region of the first direction are more densely packed. This increases the density of elastic members in both end regions of the first direction, so that the preload force per unit length on the end region is greater than the preload force on the middle region, and keeps the heat exchange tube 11 and fins 12 in the middle region from separating, reducing costs and improving welding reliability and processing efficiency. In some embodiments, such as... Figure 7 As shown, the clamping component 2 further includes: a first support member 25, which is located on the side of the first clamping component 21 adjacent to the second clamping component 22 and is spaced apart from the first clamping component 21 in the first direction; and a second elastic member 33 is disposed between the first clamping component 21 and the first support member 25. The first support member 25 extends along the second direction X, with one end of the first support member 25 in contact with the heat exchanger 1 and the other end connected to one end of the second elastic member 33. The first support member 25 contacts the heat exchanger 1 at one end in the first direction, for example, with the side plate provided on the heat exchanger 1, that is, with the outermost heat exchange tube 11 of the heat exchanger 1. The other end of the first support member 25 is connected to the second elastic member 33, thereby cooperating with the second elastic member 33 to press the heat exchanger 1. The first support member 25 extending in the second direction increases the contact area with the heat exchanger 1, preventing the second elastic member 33 from directly contacting the heat exchanger 1, thereby reducing the damage to the heat exchanger 1 caused by excessive local pressing force and improving processing reliability.

[0083] like Figure 7 As shown, in some embodiments, the clamping component 2 further includes: a second support member 26, which is located on the side of the second clamping component 22 adjacent to the first clamping component 21 and spaced apart from the second clamping component 22 in the first direction; and a third elastic member 34 is disposed between the second clamping component 22 and the second support member 26. One end of the second support member 26 in the first direction contacts the heat exchanger 1, for example, it contacts the side plate provided on the heat exchanger 1, that is, it contacts the outermost heat exchange tube 11 of the heat exchanger 1. The other end of the second support member 26 is connected to the third elastic member 34, thereby cooperating with the third elastic member to press firmly. The second support member 26 extending in the second direction increases the contact area with the heat exchanger 1, avoiding direct contact between the third elastic member 34 and the heat exchanger 1, thereby reducing the damage to the heat exchanger 1 caused by excessive local pressing force and improving processing reliability.

[0084] like Figure 7As shown, in some embodiments, the clamping component 2 includes a first support member 25 and a second support member 26. The first support member 25 and the second support member 26 are respectively disposed on both sides of the heat exchanger 1 in a first direction. They work together with the third elastic member 34 and the second elastic member 33 to press the heat exchanger 1. The second support member 26 and the first support member 25 extending in the second direction increase the contact area with the heat exchanger 1, reduce the direct contact between the third elastic member 34 or the second elastic member 33 and the heat exchanger 1, thereby reducing the damage to the heat exchanger 1 caused by excessive local clamping force, improving the stability and safety of the heat exchanger 1 during welding, and improving the reliability of processing.

[0085] Furthermore, in some embodiments, the first support member 25, the second elastic member 33, and the first clamping member 21 can be an integral structure, and the second support member 26, the third elastic member 34, and the second clamping member 22 can also be an integral structure. During processing, the clamping device can be placed on both sides of the heat exchanger 1, and then the first clamping member 21 and the second clamping member 22 on both sides of the heat exchanger 1 in the first direction can be fixed by the connecting component 31 or the strapping strap to facilitate processing and improve the processing efficiency of the heat exchanger 1.

[0086] The above examples illustrate the principles and implementation methods of this application. The descriptions of the embodiments are merely for the purpose of helping to understand the methods and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A clamping device for a heat exchanger, characterized in that, include: The clamping component (2) includes a first clamping member (21) and a second clamping member (22). The width direction of the heat exchanger (1) is defined as a first direction, and the length direction of the heat exchanger is defined as a second direction. The first clamping member (21) is located outside the heat exchanger in the first direction and extends along the second direction. The second clamping member (22) is located outside the heat exchanger (1) in the first direction and extends along the second direction. The first clamping member (21) and the second clamping member (22) are arranged opposite to each other in the first direction. A clamping member (3), at least a portion of which is elastic, is fixed to the first clamping member (21) and the second clamping member (22) to press the heat exchanger between the first clamping member (21) and the second clamping member (22), wherein the spacing between at least one set of adjacent clamping members (3) located in the end region is less than the spacing between a set of adjacent clamping members (3) located in the middle region.

2. The clamping device for a heat exchanger according to claim 1, characterized in that, The length of the end region in the second direction is b, and the length of the heat exchanger in the second direction is a, where b < 0.3a.

3. The clamping device for a heat exchanger according to claim 1, characterized in that, The clamping component (3) further includes a connecting component (31), one end of which is connected to the first clamping member (21), and the other end of which is connected to the second clamping member (22). At least a portion of the connecting component (31) is fixed to the outer periphery of the first clamping member (21) and the second clamping member (22) to press the heat exchanger in the first direction.

4. The clamping device for a heat exchanger according to any one of claims 1-3, characterized in that, The clamping component (3) includes a first elastic element (32), one end of which is connected to the first clamping member (21), and the other end of which is connected to the second clamping member (22). The first elastic element (32) extends along the first direction.

5. The clamping device for a heat exchanger according to claim 4, characterized in that, The number of the first elastic elements (32) located in the end region is greater than the number of the first elastic elements (32) located in the middle region.

6. The clamping device for a heat exchanger according to claim 4, characterized in that, At least a portion of the first elastic member (32) is a rigid member. The first elastic member (32) includes an elastic portion (324) located at both ends of the first elastic member (32) in the first direction, and the elastic portion (324) faces the heat exchanger.

7. The clamping device for a heat exchanger according to claim 5 or 6, characterized in that, The clamping component (2) further includes: a first fixing part (23), the first fixing part (23) being disposed on the first clamping member (21), the first fixing part (23) being connected to one end of the first elastic member (32); and / or, The second fixing part (24) is provided on the second clamping member (22) and is connected to the other end of the first elastic member (32).

8. The clamping device for a heat exchanger according to claim 5 or 6, characterized in that, The distance between the two ends of the first elastic member (32) in the first direction is L, and the size of the heat exchanger (1) in the first direction is H, and 0.90H < L < 0.99H.

9. The clamping device for a heat exchanger according to any one of claims 1-3, characterized in that, The clamping member (3) includes: a second elastic member (33) located in a first direction on the side of the first clamping member (21) adjacent to the second clamping member (22), and the second elastic member (33) abuts against the first clamping member (21); and / or, a third elastic member (34) located in a first direction on the side of the second clamping member (22) adjacent to the first clamping member (21), and the third elastic member (34) abuts against the second clamping member (22).

10. The clamping device for a heat exchanger according to claim 9, characterized in that, The intermediate region is provided with the second elastic element (33) or the first support block (4); and / or, the intermediate region is provided with the third elastic element (34) or the second support block (5).

11. The clamping device for a heat exchanger according to claim 10, characterized in that, The spacing between adjacent second elastic members (33) in the end region in the second direction is d1, and the spacing between adjacent second elastic members (33) or second support blocks (5) in the middle region in the second direction is d2, and d1 < d2 < 2d1; and / or, the spacing between adjacent third elastic members (34) in the end region in the second direction is d3, and the spacing between adjacent third elastic members (34) or second support blocks (5) in the middle region in the second direction is d4, and d3 < d4 < 2d3.

12. The clamping device for a heat exchanger according to claim 9, characterized in that, The clamping component (2) further includes: A first support member (25) is located on the side of the first clamping member (21) adjacent to the second clamping member (22) and is spaced apart from the first clamping member (21) in a first direction; a second elastic member (33) is disposed between the first clamping member (21) and the first support member (25); and / or, The second support member (26) is located on the side of the second clamping member (22) adjacent to the first clamping member (21) and is spaced apart from the second clamping member (22) in a first direction. The third elastic member (34) is disposed between the second clamping member (22) and the second support member (26).

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