Heat exchanger
By setting a reinforcing section on the heat exchanger end plate, allowing the tube hole to penetrate through the plate and the reinforcing section, the axial length is increased, which solves the problem of heat exchange tube wear and cracking, extends service life, and reduces noise and leakage risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-24
AI Technical Summary
In existing heat exchangers, the end plate is relatively thin and the axial length of the tube hole is relatively short, resulting in a small contact area between the tube hole and the heat exchange tube. This makes them prone to relative movement under vibration, leading to wear and breakage.
A reinforcing section is provided on the end plate, allowing the tube hole to penetrate the plate and the reinforcing section, increasing the axial length of the tube hole, increasing the contact area with the heat exchange tube, and improving the frictional resistance and reducing the relative motion frequency through the reinforcing section.
It increases the frictional resistance between the tube hole and the heat exchange tube, reduces the risk of wear and breakage, extends the service life, and reduces mechanical noise and leakage risk.
Smart Images
Figure CN224034440U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heat exchangers, in particular to a heat exchanger. BACKGROUND
[0002] The heat exchanger comprises heat exchange fins, heat exchange pipes, end plates and the like. The end plates are arranged at both ends of the heat exchange pipes to fix and position the heat exchange pipes. The end plates are provided with pipe holes, and the end portions of the heat exchange pipes are fixed by expansion at the pipe holes.
[0003] In the prior art, the thickness of the end plate is relatively small, and the axial length of the pipe hole is relatively small, so that the contact area between the pipe hole and the heat exchange pipe is relatively small. The pipe hole and the heat exchange pipe are prone to relative movement under the influence of compressor vibration and the like, thereby generating friction. In the case of long-term use, the heat exchange pipe and the pipe hole at the expansion position are gradually worn due to friction, and the heat exchange pipe is prone to wear and tear. UTILITY MODEL CONTENT
[0004] Therefore, it is necessary to provide a heat exchanger in which the heat exchange pipe at the expansion position is not prone to wear and tear.
[0005] A heat exchanger comprises
[0006] a plurality of heat exchange pipes;
[0007] an end plate arranged at the end portions of the plurality of heat exchange pipes, the end plate being provided with a plurality of pipe holes, the pipe holes being arranged one by one corresponding to the heat exchange pipes, the heat exchange pipes passing through the pipe holes and being connected to the pipe holes by expansion;
[0008] The end plate comprises a plate body and a reinforcing portion, the reinforcing portion extending in the axial direction of the pipe hole and protruding from the side wall of the plate body, and the pipe holes penetrating the plate body and the reinforcing portion.
[0009] In one embodiment, the reinforcing portion comprises a protrusion arranged on the plate body, and a plurality of pipe holes are arranged on the protrusion and penetrate the protrusion and the plate body.
[0010] In one embodiment, the two side walls in the thickness direction of the plate body are respectively a first side wall and a second side wall, the reinforcing portion is defined as at least a first reinforcing portion and a second reinforcing portion, the first reinforcing portion is arranged on the first side wall and protrudes from the first side wall, and the second reinforcing portion is arranged on the second side wall and protrudes from the second side wall.
[0011] In one embodiment, the reinforcing portion comprises a plurality of flanges arranged on the plate body, the flanges correspond to the pipe holes, and the flanges are arranged around the pipe holes.
[0012] In one of the embodiments, the reinforcing part comprises a protrusion and a plurality of flanges, the protrusion is arranged on the plate body, a plurality of the tube holes are arranged on the protrusion and penetrate through the protrusion and the plate body, and a plurality of the flanges are arranged on the protrusion, each of the flanges corresponds to one of the tube holes.
[0013] In one of the embodiments, the heat exchanger further comprises a gasket, the gasket is sleeved on the end of the heat exchange tube, the inner wall of the gasket is in sealing cooperation with the heat exchange tube, and the outer wall of the gasket is in sealing cooperation with the tube hole.
[0014] In one of the embodiments, the height of the reinforcing part extending along the axial direction of the tube hole is H, and 5mm≥H≥2mm.
[0015] In one of the embodiments, the diameter of the flange gradually decreases from the side close to the tube hole to the side away from the tube hole.
[0016] In one of the embodiments, the diameter of the side of the flange close to the tube hole is R1, the diameter of the side of the flange away from the tube hole is R2, and R1 and R2 satisfy the relationship: R1=1.035R2-1.11R2.
[0017] In one of the embodiments, the protrusion and the plate body are in a split structure, the width of the protrusion is W1, the width of the plate body is W2, W1 and W2 satisfy the relationship: W1=0.4W2-0.8W2, the length of the protrusion is L1, the length of the plate body is L2, and L1 and L2 satisfy the relationship: L1=0.7L2-1L2.
[0018] Compared with the prior art, the end plate of the heat exchanger is provided with a reinforcing part, and the tube hole penetrates through the reinforcing part and the plate body, that is, the axial length of the tube hole is increased, thereby increasing the axial contact area between the tube hole and the heat exchange tube, improving the friction resistance between the tube hole and the heat exchange tube, reducing the relative movement between the tube hole and the heat exchange tube, thereby reducing the risk of wear and tear of the heat exchange tube and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0020] Figure 1 The heat exchanger structure schematic diagram provided by the present application.
[0021] Figure 2 Structure diagram of the first embodiment of the end plate provided in the present application.
[0022] Figure 3 Structure diagram of the first embodiment of the end plate provided in the present application.
[0023] Figure 4 Structure diagram of the first embodiment of the end plate provided in the present application and the heat exchange pipe.
[0024] Figure 5 Structure diagram of the second embodiment of the end plate provided in the present application.
[0025] Figure 6 Structure diagram of the second embodiment of the end plate provided in the present application and the heat exchange pipe.
[0026] Figure 7 Structure diagram of the third embodiment of the end plate provided in the present application.
[0027] Figure 8 Structure diagram of the third embodiment of the end plate provided in the present application and the heat exchange pipe.
[0028] Figure 9 Structure diagram of the fourth embodiment of the end plate provided in the present application.
[0029] Figure 10 Structure diagram of the fourth embodiment of the end plate provided in the present application and the heat exchange pipe.
[0030] Figure 11 is a top view of Figure 2
[0031] is a diagram of the heat exchange pipe and the end plate provided in the present application when not assembled. Figure 12
[0032] is a side view of Figure 13 Figure 12
[0033] Figure 14 is an enlarged view of A in Figure 13
[0034] Reference signs: 10, heat exchange pipe; 20, end plate; 21, plate body; 211, first side wall; 212, second side wall; 22, reinforcing part; 221, protrusion; 222, flange; 223, first reinforcing part; 224, second reinforcing part; 30, pipe hole; 40, gasket. DETAILED DESCRIPTION
[0035] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the detailed description of the specific embodiments of the present application is made below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than the one described herein, and one of ordinary skill in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.
[0036] It is to be noted that when a component is referred to as being "on" or "disposed on" another component, it can be directly on the other component or there can be intervening components present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms as used in the description of the specification are for the purpose of illustration only and do not indicate an exclusive orientation.
[0037] In addition, the terms "first", "second", etc. are used herein only to describe various conditions, and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated thereby. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0038] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of a first feature to a second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of a first feature to a second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of a first feature to a second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0039] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the related listed items.
[0040] Please refer to Figures 1 to 14The application provides a heat exchanger, which comprises a plurality of heat exchange pipes 10 and an end plate 20. The end plate 20 is arranged at the end of the plurality of heat exchange pipes 10, and a plurality of pipe holes 30 are formed in the end plate 20. The plurality of pipe holes 30 are arranged correspondingly to the plurality of heat exchange pipes 10. The pipe holes 30 are arranged correspondingly to the heat exchange pipes 10, the heat exchange pipes 10 pass through the pipe holes 30 and are connected to the pipe holes 30 by pipe expansion. The end of each heat exchange pipe 10 is inserted into the corresponding pipe hole 30 and is fixed to the pipe hole 30 by pipe expansion. The end plate 20 comprises a plate body 21 and a reinforcing part 22. The reinforcing part 22 extends along the axial direction of the pipe hole 30, and the reinforcing part 22 protrudes from the side wall of the plate body 21. The pipe hole 30 penetrates the plate body 21 and the reinforcing part 22.
[0041] It can be understood that the axial length of the pipe hole 30 is the sum of the thickness of the plate body 21 and the thickness of the reinforcing part 22. The existence of the reinforcing part 22 increases the axial length of the pipe hole 30, thereby increasing the axial contact area between the pipe hole 30 and the heat exchange pipe 10. In the case of increased contact area, the frictional resistance between the pipe hole 30 and the heat exchange pipe 10 will also increase, the frequency of relative motion between the pipe hole 30 and the heat exchange pipe 10 in the same vibration environment is reduced, the wear between the pipe hole 30 and the heat exchange pipe 10 due to friction is reduced, thereby reducing the risk of wear and rupture of the heat exchange pipe 10, reducing the maintenance frequency and cost, and prolonging the service life of the heat exchanger.
[0042] Secondly, the reduction of the frequency of relative motion between the pipe hole 30 and the heat exchange pipe 10 also reduces the mechanical noise generated by friction, and at the same time reduces the turbulent noise of the refrigerant flowing in the heat exchange pipe 10, thereby improving the operating environment of the heat exchanger.
[0043] Exemplarily, the end plate 20 is provided as two, and the two end plates 20 are arranged at the ends of the heat exchange pipes 10 to fix the two ends of the heat exchange pipes 10.
[0044] Further, the reinforcing part 22 can be arranged on only one side wall of the end plate 20 and protrude from the side wall.
[0045] Of course, the reinforcing part 22 can also be arranged on the front and back side walls in the thickness direction of the plate body 21, that is, the front and back side walls in the thickness direction of the plate body 21 are respectively provided with the reinforcing part 22, and the pipe hole 30 penetrates the two reinforcing parts 22 and the plate body 21. The reinforcing parts 22 on the two side walls can be arranged as the same structure or different structures.
[0046] In an embodiment, the heat exchanger further comprises a gasket 40 sleeved on the end of the heat exchange pipe 10. The inner wall of the gasket 40 is sealingly matched with the heat exchange pipe 10, and the outer wall of the gasket 40 is sealingly matched with the pipe hole 30.
[0047] It can be understood that the presence of the gasket 40 effectively avoids direct contact between the heat exchange pipe 10 and the pipe hole 30 by physical isolation, which can further reduce the friction between the heat exchange pipe 10 and the pipe hole 30, avoid the expansion of the heat exchange pipe 10 from being worn and broken, and reduce the risk of leakage. And because the hardness of the gasket 40 is lower than that of the heat exchange pipe 10, the wear can be basically transferred to the gasket 40, so that the heat exchange pipe 10 will not be worn and broken.
[0048] Exemplarily, the gasket 40 can be made of rubber, resin or the like.
[0049] Further, the height of the reinforcing portion 22 extending along the pipe hole 30 is set as H, 5mm≥H≥2mm.
[0050] Exemplarily, the value of H can be 2mm, 3mm, 4mm, 5mm, etc. Of course, the corresponding value can also be selected according to the actual situation, which will not be described here.
[0051] Referring to Figures 2 to 4 In an embodiment, the reinforcing portion 22 includes a protrusion 221. The protrusion 221 is arranged on the plate body 21 and protrudes from the side wall of the plate body 21. A plurality of pipe holes 30 are distributed on the protrusion 221, and the plurality of pipe holes 30 respectively penetrate the protrusion 221 and the plate body 21.
[0052] It can be understood that the reinforcing portion 22 is formed in the manner that the part of the plate body 21 corresponding to all the pipe holes 30 is protruded as a whole, which is convenient to process and easy to form, and has low manufacturing difficulty and cost.
[0053] Further, referring to Figure 11 , the width of the protrusion 221 is set as W1, and the width of the plate body 21 is set as W2. W1 and W2 satisfy the relationship: W1=0.4W2-0.8W2. The length of the protrusion 221 is set as L1, and the length of the plate body 21 is set as L2. L1 and L2 satisfy the relationship: L1=0.7L2-1L2.
[0054] Exemplarily, the value of W1 can be 0.4W2, 0.5W2, 0.6W2, 0.7W2, 0.8W2, etc. Of course, the corresponding value can also be selected according to the actual need, which will not be described here.
[0055] Exemplarily, the value of L1 can be 0.7L2, 0.8L2, 0.9L2, 1L2. Of course, the corresponding value can also be selected according to the actual need, which will not be described here.
[0056] It can be understood that the width of the protrusion 221 is set to be less than the width of the plate body 21, and the width of the protrusion 221 only needs to cover the area where the pipe hole 30 is located, without the need to increase the thickness of the entire plate body 21, thereby saving materials and reducing processing cost.
[0057] Preferably, in the embodiment, the protrusion 221 is in a separate structure with the plate body 21. The protrusion 221 is a plate-shaped metal structure, which can be fixed to the plate body 21 by welding or other methods, and is easier to process.
[0058] Of course, not limited to this, in other embodiments, the protrusion 221 can also be in an integral structure with the plate body 21. Formed on the plate body 21 by cutting, milling or other methods.
[0059] Referring to Figures 5 to 6 In another embodiment, the reinforcing portion 22 includes a plurality of flanges 222, and the plurality of flanges 222 are arranged on the plate body 21. The positions of the plurality of flanges 222 correspond to the positions of the plurality of pipe holes 30, and the pipe holes 30 and the flanges 222 are arranged one-to-one, and the flanges 222 are arranged around the pipe holes 30.
[0060] Further, the inner wall of the flange 222 and the inner wall of the pipe hole 30 are smoothly transitioned. That is, the flange 222 and the pipe hole 30 jointly form a flange 222 hole.
[0061] It can be understood that the reinforcing portion 22 is formed by adopting the form of each pipe hole 30 being individually flanged 222, without the need to thicken the end plate 20 as a whole, greatly saving materials and reducing processing costs.
[0062] As preferred, the diameter of the flange 222 gradually decreases from the side close to the pipe hole 30 to the side away from the pipe hole 30. This facilitates the insertion of the end portion of the heat exchange pipe 10.
[0063] In the embodiment, referring to Figures 12 to 14 , the diameter of the side of the flange 222 close to the pipe hole 30 is set as R1, and the diameter of the side of the flange 222 away from the pipe hole 30 is set as R2R2. R1 and R2R2 satisfy the relationship: R1 = 1.035R2R2-1.11R2R2.
[0064] It can be understood that the flange 222 is formed on the end plate 20 by extrusion. Under the above value range, the diameter of the flange 222 will not be too large, and the flange 222 is not prone to breakage during processing, thereby ensuring the qualified rate of the flange 222.
[0065] Exemplarily, the value of R1 can be 1.035R2, 1.05R2, 1.065R2, 1.08R2, 1.095R2, 1.1R2, 1.11R2, etc. Of course, the corresponding value can also be selected according to the actual situation, which will not be described here.
[0066] Referring to Figures 7 to 8In another embodiment, the reinforcing portion 22 comprises a protrusion 221 and a plurality of flanges 222. The protrusion 221 is arranged on the plate body 21, and the plurality of tube holes 30 are arranged on the protrusion 221 and extend through the protrusion 221 and the plate body 21. The plurality of flanges 222 are arranged on the protrusion 221, and each of the plurality of flanges 222 corresponds to one of the plurality of tube holes 30 and surrounds the corresponding tube hole 30.
[0067] It can be understood that, when the tube hole 30 and the heat exchange tube 10 need to have a relatively long axial contact length, if only the protrusion 221 is used to form the reinforcing portion 22, the overall thickness is relatively large, the end plate 20 is relatively heavy, and the material consumption is relatively large. If only the flange 222 is used to form the reinforcing portion 22, the length of the flange 222 is relatively long, and thus the structural stability of the flange 222 is relatively poor, and the processing damage rate is relatively large. By using the combination of the protrusion 221 and the flange 222, the structural stability can be ensured while the material consumption is reduced, and the processing requirements can be met.
[0068] Further, the width of the protrusion 221 is W1, and the width of the plate body 21 is W2. W1 and W2 satisfy the relationship: W1 = 0.4W2-0.8W2. The length of the protrusion 221 is L1, and the length of the plate body 21 is L2. L1 and L2 satisfy the relationship: L1 = 0.7L2-1L2.
[0069] For example, the value of W1 can be 0.4W2, 0.5W2, 0.6W2, 0.7W2, 0.8W2, etc. Of course, the corresponding value can also be selected according to actual needs, which will not be described here.
[0070] For example, the value of L1 can be 0.7L2, 0.8L2, 0.9L2, 1L2. Of course, the corresponding value can also be selected according to actual needs, which will not be described here.
[0071] It can be understood that the width of the protrusion 221 is set to be smaller than the width of the plate body 21. The width of the protrusion 221 only needs to cover the area where the tube hole 30 is located, and the thickness of the entire plate body 21 does not need to be increased, thereby saving materials and reducing processing costs.
[0072] Preferably, in the present embodiment, the protrusion 221 and the plate body 21 are in a split structure. The protrusion 221 is a plate-shaped metal structure, which can be fixed to the plate body 21 by welding or the like, and is more simple to process.
[0073] Of course, not limited to this, in other embodiments, the protrusion 221 can also be in an integral structure with the plate body 21. The protrusion 221 can be formed on the plate body 21 by cutting or milling.
[0074] Further, the inner wall of the flange 222 and the inner wall of the tube hole 30 are smoothly transitioned. That is, the flange 222 and the tube hole 30 jointly form a flange 222 hole.
[0075] Preferably, the diameter of the flange 222 gradually decreases from the side close to the tube hole 30 to the side away from the tube hole 30, facilitating the insertion of the heat exchange tube 10.
[0076] In the embodiment, referring to Figures 12 to 14 , the diameter of the side of the flange 222 close to the tube hole 30 is R1, and the diameter of the side of the flange 222 away from the tube hole 30 is R2. R1 and R2 satisfy the relationship: R1 = 1.035R2 ~ 1.11R2.
[0077] It can be understood that the flange 222 is formed by extrusion. Within the above range, the diameter of the flange 222 is not too large, and the flange 222 is not prone to breakage during processing, thereby ensuring the qualified rate of the flange 222.
[0078] For example, the value of R1 can be 1.035R2, 1.05R2, 1.065R2, 1.08R2, 1.095R2, 1.1R2, 1.11R2, etc. Of course, the corresponding value can also be selected according to the actual situation, which will not be described in detail here.
[0079] Referring to Figures 9 to 10 , in an embodiment, the two side walls in the thickness direction of the plate body 21 are respectively a first side wall 211 and a second side wall 212. The reinforcing portion 22 is defined as at least a first reinforcing portion 223 and a second reinforcing portion 224, the first reinforcing portion 223 is arranged on the first side wall 211 and protrudes from the first side wall 211, and the second reinforcing portion 224 is arranged on the second side wall 212 and protrudes from the second side wall 212. The tube hole 30 penetrates the first reinforcing portion 223, the plate body 21, and the second reinforcing portion 224.
[0080] Preferably, the first reinforcing portion 223 adopts the structure of the reinforcing portion 22 of the third embodiment, that is, the reinforcing portion 22 is formed by the combination of the protrusion 221 and the flange 222. The second reinforcing portion 224 adopts the structure of the reinforcing portion 22 of the second embodiment, that is, the reinforcing portion 22 is formed by the flange 222 on the plate body 21.
[0081] Of course, it is not limited to this, in other embodiments, the first reinforcing portion 223 and the second reinforcing portion 224 can adopt the structure of the reinforcing portion 22 of any embodiment, which can be freely selected according to actual needs, and will not be described here.
[0082] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.
[0083] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A heat exchanger, characterized in that, include: Multiple heat exchange tubes (10); An end plate (20) is provided at the end of a plurality of heat exchange tubes (10). A plurality of tube holes (30) are provided on the end plate (20). The tube holes (30) are provided one-to-one with the heat exchange tubes (10). The heat exchange tubes (10) pass through the tube holes (30) and are connected to the tube holes (30) by expansion. The end plate (20) includes a plate body (21) and a reinforcing part (22). The reinforcing part (22) extends along the axial direction of the tube hole (30) and protrudes from the side wall of the plate body (21). The tube hole (30) passes through the plate body (21) and the reinforcing part (22) respectively.
2. The heat exchanger according to claim 1, characterized in that, The plate (21) has two sidewalls in the thickness direction, namely a first sidewall (211) and a second sidewall (212). The reinforcing part (22) is defined as at least a first reinforcing part (223) and a second reinforcing part (224). The first reinforcing part (223) is disposed on the first sidewall (211) and protrudes from the first sidewall (211), and the second reinforcing part (224) is disposed on the second sidewall (212) and protrudes from the second sidewall (212).
3. The heat exchanger according to claim 2, characterized in that, The reinforcing part (22) includes a protrusion (221) provided on the plate (21), and a plurality of the tube holes (30) are spaced apart on the protrusion (221) and penetrate the protrusion (221) and the plate (21).
4. The heat exchanger according to claim 2, characterized in that, The reinforcing part (22) includes a plurality of flanges (222) disposed on the plate (21), the plurality of flanges (222) being respectively disposed corresponding to the plurality of tube holes (30), and the flanges (222) being disposed around the tube holes (30).
5. The heat exchanger according to claim 2, characterized in that, The reinforcing part (22) includes a protrusion (221) and a plurality of flanges (222). The protrusion (221) is disposed on the plate (21), and a plurality of pipe holes (30) are spaced apart on the protrusion (221) and penetrate the protrusion (221) and the plate (21). A plurality of flanges (222) are disposed on the protrusion (221), and the plurality of flanges (222) are respectively disposed corresponding to the plurality of pipe holes (30), and the flanges (222) are disposed around the pipe holes (30).
6. The heat exchanger according to claim 1, characterized in that, The reinforcing part (22) includes a protrusion (221) provided on the plate (21), and a plurality of the tube holes (30) are spaced apart on the protrusion (221) and penetrate the protrusion (221) and the plate (21).
7. The heat exchanger according to claim 1, characterized in that, The reinforcing part (22) includes a plurality of flanges (222) disposed on the plate (21), the plurality of flanges (222) being respectively disposed corresponding to the plurality of tube holes (30), and the flanges (222) being disposed around the tube holes (30).
8. The heat exchanger according to claim 1, characterized in that, The reinforcing part (22) includes a protrusion (221) and a plurality of flanges (222). The protrusion (221) is disposed on the plate (21), and a plurality of pipe holes (30) are spaced apart on the protrusion (221) and penetrate the protrusion (221) and the plate (21). A plurality of flanges (222) are disposed on the protrusion (221), and the plurality of flanges (222) are respectively disposed corresponding to the plurality of pipe holes (30), and the flanges (222) are disposed around the pipe holes (30).
9. The heat exchanger according to any one of claims 1-8, characterized in that, The heat exchanger also includes a gasket (40), which is sleeved on the end of the heat exchange tube (10); the inner wall of the gasket (40) is sealed to the heat exchange tube (10), and the outer wall of the gasket (40) is sealed to the tube hole (30).
10. The heat exchanger according to any one of claims 1-8, characterized in that, The height of the reinforcing part (22) extending axially along the tube hole (30) is set to H, where 5mm ≥ H ≥ 2mm.
11. The heat exchanger according to any one of claims 4, 5, 7, or 8, characterized in that, The diameter of the flange (222) gradually decreases from the direction closer to the tube hole (30) to the direction farther away from the tube hole (30).
12. The heat exchanger according to claim 11, characterized in that, The diameter of the flange (222) on the side closer to the tube hole (30) is set to R1, and the diameter of the flange (222) on the side farther from the tube hole (30) is set to R2. R1 and R2 satisfy the relationship: R1=1.035R2-1.11R2.
13. The heat exchanger according to any one of claims 3, 5, 6, or 8, characterized in that, The protrusion (221) and the plate (21) are separate structures; and / or, the width of the protrusion (221) is set to W1, and the width of the plate (21) is set to W2; W1 and W2 satisfy the relationship: W1=0.4W2-0.8W2; the length of the protrusion (221) is set to L1, and the length of the plate (21) is set to L2, and L1 and L2 satisfy the relationship: L1=0.7L2-1L2.