Heat exchanger and refrigeration apparatus

Abstract

The application discloses a heat exchanger and a refrigeration equipment, wherein the heat exchanger comprises a flat tube and a fin, the flat tube comprises a plurality of straight pipe sections extending along a first direction and arranged at intervals in a second direction, the straight pipe sections comprise mounting sides in the second direction; the fin extends along the first direction and is arranged in a back-and-forth bending mode in the second direction to form a plurality of bending parts on two side ends thereof in the second direction, respectively, the fin is arranged between two straight pipe sections, and the bending parts of the two side ends of the fin correspond to the mounting sides of the two straight pipe sections and abut against the mounting sides; and the abutting parts between the mounting sides of the straight pipe sections and the bending parts of the fin are arranged in a concave-convex structure matched with each other. The application aims at solving the problems of small contact area between the existing fin and the flat tube and low heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment design and manufacturing technology, specifically to a heat exchanger and refrigeration equipment. Background Technology

[0002] Since the invention of refrigeration equipment, its use has become indispensable in daily life, such as air conditioners, refrigerators, and freezers. Refrigeration equipment cannot function without heat exchangers, and improving the performance of refrigeration equipment necessitates enhancing the heat exchange capacity of heat exchangers. The industry is constantly exploring and developing such solutions.

[0003] Existing microchannel heat exchangers typically consist of fins sandwiched between flat tubes. The fins abut against the flat tubes to absorb heat from them, and then the heat is exposed to the air through the fins to increase the contact area between the heat exchanger and the air, thereby improving the heat transfer efficiency. Specifically, the surface of existing flat tubes is generally planar, and simultaneously, existing fins are generally in line contact with the planar surface of the flat tubes to improve the heat transfer efficiency between the heat exchanger and the air. However, this arrangement suffers from the problem of insufficient contact area between the fins and the flat tubes, resulting in low heat transfer efficiency between the flat tubes and the fins. Summary of the Invention

[0004] The main objective of this invention is to propose a heat exchanger and refrigeration equipment that aims to solve the problems of small contact area and low heat exchange efficiency between existing fins and flat tubes.

[0005] To achieve the above objectives, the present invention provides a heat exchanger comprising a flat tube and fins. The flat tube comprises a plurality of straight tube segments extending along a first direction and spaced apart in a second direction, each straight tube segment including a mounting side in the second direction. The fins extend along the first direction and are bent back and forth in the second direction, forming a plurality of bends at their two ends in the second direction. The fins are disposed between two straight tube segments, and the bends at the two ends of the fins abut against the mounting sides of the two straight tube segments. The portions abutting between the mounting sides of the straight tube segments and the bends of the fins are configured with a mutually adaptable concave-convex structure.

[0006] Optionally, the concave-convex structure on the mounting side of the straight pipe section includes a first concave portion and a first convex portion distributed along a third direction;

[0007] The concave-convex structure on the bent portion of the fin includes a second convex portion and a second concave portion distributed along the third direction and adapted to the first concave portion and the first convex portion.

[0008] Optionally, the width dimension of the flat tube in the second direction is gradually changed along the third direction, so that the concave-convex structure is formed on the two mounting sides of the flat tube.

[0009] Optionally, the concave-convex structure on the bent portion is formed by stamping.

[0010] Optionally, both the concave and convex portions of the concave-convex structure are arc-shaped.

[0011] Optionally, the mounting side of the straight pipe section and the bent portion of the fin are welded or bonded together with adhesive.

[0012] Optionally, the heat exchanger further includes a connector that passes through multiple straight pipe sections and connects the multiple straight pipe sections to clamp the fins.

[0013] Optionally, the connector may include a screw-in connector or a riveted connector.

[0014] Optionally, the concave-convex structure on the straight pipe section includes a first concave portion and a first convex portion distributed along a third direction;

[0015] The connector is disposed through the first recess on the straight pipe section.

[0016] The present invention also proposes a refrigeration device, the refrigeration device including a heat exchanger, the heat exchanger including a flat tube and fins, the flat tube including a plurality of straight tube segments extending along a first direction and spaced apart in a second direction, the straight tube segments including a mounting side in the second direction; the fins extending along the first direction and bent back and forth in the second direction, so as to form a plurality of bends at their two ends in the second direction respectively, the fins being disposed between two of the straight tube segments, and the bends at the two ends of the fins corresponding to abut against the mounting sides of the two straight tube segments; wherein, the portions abutting between the mounting sides of the straight tube segments and the bends of the fins are provided with a mutually adaptable concave-convex structure.

[0017] In the technical solution of this invention, a fin is sandwiched between two straight pipe sections extending along a first direction and spaced apart in a second direction. The fin extends along the first direction and is bent back and forth in the second direction to form multiple bends at both ends in the second direction. The bends abut against the straight pipe sections to absorb heat from the straight pipe sections, thus achieving heat exchange between the fin and the flat tube. The heat is then dissipated into the air through a heat exchange section connecting two bends on the fin and located between the two straight pipe sections, achieving heat exchange between the fin and the air. The fin is bent to increase its surface area in contact with the air, improving the heat exchange efficiency between the fin and the air. Simultaneously, the mounting side of the straight pipe section in the second direction and the bends of the fin abutting its surface are configured with mutually adaptable concave-convex structures to increase the contact area between the bends and the straight pipe section, further improving the heat exchange efficiency between the fin and the flat tube. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A partial perspective view of an embodiment of the heat exchanger provided by the present invention;

[0020] Figure 2 for Figure 1 A plan view of the flat tube portion of the first embodiment;

[0021] Figure 3 for Figure 2 A cross-sectional schematic diagram;

[0022] Figure 4 for Figure 1 A plan view of the flat tube portion of the second embodiment;

[0023] Figure 5 for Figure 4 A cross-sectional schematic diagram;

[0024] Figure 6 for Figure 1 A three-dimensional schematic diagram of the bent portion of the fins;

[0025] Figure 7 for Figure 6 A planar schematic diagram of the fins in the middle;

[0026] Figure 8 for Figure 6 Another planar schematic diagram of the fins.

[0027] Explanation of icon numbers:

[0028]

[0029]

[0030] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0034] Since the invention of refrigeration equipment, its use has become indispensable in daily life, such as air conditioners, refrigerators, and freezers. Refrigeration equipment cannot function without heat exchangers, and improving the performance of refrigeration equipment necessitates enhancing the heat exchange capacity of heat exchangers. The industry is constantly exploring and developing such solutions.

[0035] Existing microchannel heat exchangers typically consist of fins sandwiched between flat tubes. The fins abut against the flat tubes to absorb heat from them, and then the heat is exposed to the air through the fins to increase the contact area between the heat exchanger and the air, thereby improving the heat transfer efficiency. Specifically, the surface of existing flat tubes is generally planar, and simultaneously, existing fins are generally in line contact with the planar surface of the flat tubes to improve the heat transfer efficiency between the heat exchanger and the air. However, this arrangement suffers from the problem of insufficient contact area between the fins and the flat tubes, resulting in low heat transfer efficiency between the flat tubes and the fins.

[0036] In view of this, the present invention provides a heat exchanger, Figures 1 to 8 This is an embodiment of the heat exchanger provided by the present invention, and the heat exchanger will be described below with reference to the specific drawings.

[0037] Please see Figures 1 to 8 The heat exchanger 100 includes a flat tube 1 and fins 2. The flat tube 1 includes a plurality of straight tube sections 11 extending along a first direction and spaced apart in a second direction. Each straight tube section 11 includes a mounting side 111 in the second direction. The fins 2 extend along the first direction and are bent back and forth in the second direction, so that a plurality of bends 21 are formed on both ends in the second direction. The fins 2 are disposed between two straight tube sections 11, and the bends 21 at both ends of the fins 2 abut against the mounting sides 111 of the two straight tube sections 11. The portions abutting between the mounting sides 111 of the straight tube sections 11 and the bends 21 of the fins 2 are provided with a mutually adaptable concave-convex structure 3.

[0038] In the technical solution of the present invention, a fin 2 is sandwiched between two straight pipe sections 11 that extend along the first direction and are spaced apart in the second direction. The fin 2 extends along the first direction and is bent back and forth in the second direction to form a plurality of bent portions 21 at both ends in the second direction. The bent portions 21 abut against the straight pipe sections 11 to absorb the heat on the straight pipe sections 11, thereby realizing heat exchange between the fin 2 and the flat tube 1. Then, the heat on the fin 2 is dissipated into the air through the heat exchange section on the fin 2 that connects the two bent portions 21 and is located between the two straight pipe sections 11, thereby realizing heat exchange between the fin 2 and the air. The fins 2 are bent to increase their surface area in contact with air, thereby improving the heat exchange efficiency between the fins 2 and the air. At the same time, the mounting side 111 of the straight pipe section 11 in the second direction and the bent portion 21 of the fins 2 that abuts against its surface are configured as mutually compatible concave-convex structures 3 to increase the contact area between the bent portion 21 and the straight pipe section 11, thereby improving the heat exchange efficiency between the fins 2 and the flat tube 1.

[0039] Specifically, the concave-convex structure 3 of the mounting side 111 of the straight pipe section 11 includes a first concave portion 31 and a first convex portion 32 distributed along a third direction; the concave-convex structure 3 on the bent portion 21 of the fin 2 includes a second convex portion 34 and a second concave portion 33 distributed along the third direction and adapted to the first concave portion 31 and the first convex portion 32. The concave-convex structure 3 on the mounting side 111 can be composed of dot-shaped pits and dot-shaped protrusions, and the dot-shaped pits and protrusions can be disordered or ordered; the concave-convex structure 3 can also be composed of strip-shaped pits and strip-shaped protrusions, and the extension direction of the strip-shaped pits and protrusions can be any direction on the mounting side 111; of course, the concave-convex structure 3 can also be composed of any combination of dot-shaped pits and / or dot-shaped protrusions and strip-shaped protrusions and / or strip-shaped pits, which is not limited here, as long as the bent portion 21 of the fin 2 can be adapted to the mounting side 111 to form the corresponding concave-convex structure 3, such that the contact area between the bent portion 21 and the mounting side 111 is larger than the contact area between the bent portion 21 and a plane, which can improve the heat exchange efficiency between the fin 2 and the flat tube 1.

[0040] In this embodiment, the concave-convex structure 3 on the mounting side 111 is configured with alternating strip-shaped protrusions and strip-shaped recesses, and these strip-shaped protrusions and recesses are alternately distributed along the third direction to form the first recess 31 and the first protrusion 32. That is, the first recess 31 and the first protrusion 32 extend along the first direction. On the one hand, the strip-shaped arrangement of the first protrusion 32 and the first recess 31 is easier to process than the dot-shaped arrangement; on the other hand, the first protrusion 32 and the first recess 31 extend along the first direction, that is, along the... The first protrusion 32 and the first recess 31 have the largest length dimensions when extending in the direction of the straight pipe section 11, compared to when extending in the width direction and other directions. This results in one first protrusion 32 and one first recess 31 corresponding to more bending portions 21, reducing the number of first protrusions 32 and first recesses 31 that need to be processed and reducing the processing difficulty. Furthermore, the bending portions 21 on the fin 2 have a larger dimension in the third direction, which makes it easier to process and set up the second protrusion 34 and the second recess 33.

[0041] Furthermore, the width of the flat tube 1 in the second direction gradually changes along the third direction, so that the concave-convex structure 3 is formed on the two mounting sides 111 of the flat tube 1. The concave-convex structure 3 can also be formed by providing additional protrusions on the flat mounting sides 111, increasing the contact area with the fins 2. While ensuring the heat transfer efficiency of the additional protrusions, this arrangement can also improve the heat exchange efficiency between the fins 2 and the flat tube 1. However, since the flat tube 1 is a microchannel flat tube 1, providing additional protrusions on its mounting sides 111 increases the thickness of the medium between the microchannel and the fins 2, which obviously affects the heat exchange between the refrigerant in the microchannel and the fins 2, i.e., affects the heat exchange efficiency between the flat tube 1 and the fins 2. In summary, the concave-convex structure 3 configured in this way can improve the heat exchange efficiency between the fins 2 and the flat tube 1, but the improvement effect is limited and must be based on the additional protrusions having good thermal conductivity. In this embodiment, the width of the flat tube 1 in the second direction is gradually varied along the third direction to form the concave-convex structure 3. On the one hand, the microchannel size inside the flat tube 1 changes with the width of the flat tube 1 in the second direction to maintain the wall thickness of the flat tube 1 corresponding to the microchannel, ensuring that the medium thickness between the fin 2 and the microchannel is consistent when the fin 2 abuts against the flat tube 1. Increasing the contact area between the fin 2 and the flat tube 1 will definitely improve the heat exchange efficiency between the fin 2 and the flat tube 1. On the other hand, the gradually varied width of the flat tube 1 is easy to process and form. Furthermore, the bent portion 21 of the fin 2 is adapted to the gradually varied concave-convex structure 3, resulting in a better fit and more stable contact.

[0042] Furthermore, the concave-convex structure 3 on the bent portion 21 is formed by stamping. The fins 2 are generally manufactured using thin metal materials. Traditionally, the fins 2 can be formed simply by mechanical bending. In this embodiment, the fins 2 have the concave-convex structure 3 adapted to the bent portion 21, which cannot be formed by bending alone. Since the fins 2 are made of thin metal materials, they possess a certain degree of ductility. Simultaneously, the bent portion 21, even without the concave-convex structure 3, can be formed by stamping. By setting the processing method of the fins 2 to stamping, the bent portion 21 and the concave-convex structure 3 on it can be formed in one stamping process, reducing processing steps and lowering processing costs.

[0043] Furthermore, both the concave and convex portions of the concave-convex structure 3 are arc-shaped. On the one hand, compared to a straight line, the arc-shaped arrangement of the concave-convex structure 3 results in a larger contact area between the mounting side 111 and the bent portion 21, leading to higher heat exchange efficiency. On the other hand, the arc-shaped arrangement of the concave-convex structure 3 provides a smoother transition compared to a straight line, facilitating a closer fit between the bent portion 21 and the mounting side 111.

[0044] In the heat exchanger 100, the fins 2 need to be fixedly connected to the straight pipe section 11 to ensure the stability of the heat exchanger 100. Specifically, the mounting side 111 of the straight pipe section 11 and the bent portion 21 of the fins 2 are welded or bonded together with adhesive. Because the straight pipe section 11 is provided with the concave-convex structure 3, the fins 2 installed between two straight pipe sections 11 are limited by the concave-convex structure 3 in the third direction, which can prevent the fins 2 from coming out of the heat exchanger 100 in the third direction. Since the fins 2 are already sandwiched between two straight pipe sections 11, restricting the movement of the fins 2 in the second direction, in this solution, the fins 2 only need to restrict the movement in the first direction to complete the fixation with the straight pipe section 11. Specifically, the fins 2 are welded to the straight pipe section 11 or bonded with adhesive. In the first embodiment of this solution, the fins 2 are bonded to the straight pipe section 11 with adhesive, and the adhesive used is a thermally conductive adhesive. This ensures the stable connection between the fins 2 and the bent portion 21. At the same time, the thermally conductive adhesive can play a certain role in heat conduction. When the thermally conductive adhesive covers the contact surface between the bent portion 21 and the mounting side 111 for bonding, it can compensate for any possible abutment gap between the bent portion 21 and the mounting side 111, thereby improving the thermal conductivity between the bent portion 21 and the mounting side 111. Of course, the fins 2 and the straight pipe section 11 can be fixed by welding. Welding material is coated on the mounting side 111, and then the fins 2 are welded to the mounting side 111 by high temperature. Because the welding material itself contains metal components, the fins 2 and the straight pipe section 11 have better heat exchange performance after being fixed by adhesive bonding. However, the welding material itself is expensive and the process is complicated, resulting in high production costs and inconvenience for use.

[0045] It should be noted that the connection method of the multiple straight pipe sections 11 can be that a manifold is respectively set at both ends of the multiple straight pipe sections 11 in the first direction, and the multiple straight pipe sections 11 are connected in parallel to the manifold; or a bend is connected at the same end of two adjacent straight pipe sections 11, and the multiple straight pipe sections 11 are connected in series through the multiple bends to form a serpentine flat tube 1. The heat exchanger 100 with the straight pipe sections 11 connected in parallel has better heat exchange efficiency, but the process is more complex and the production cost is high; the heat exchanger 100 with the straight pipe sections 11 connected in series has poor heat exchange efficiency, but its processing technology is simple and the production cost is low. In this embodiment, the multiple straight pipe sections 11 are connected in series through the multiple bends to form a serpentine flat tube 1, which makes the cost of the heat exchanger 100 low. Specifically, one end of two adjacent straight pipe sections 11 is connected to the bend section, and the other end is spaced apart. The fin 2 is installed by sliding from the other end of the spaced straight pipe sections 11 into the space between the two straight pipe sections 11 along the first direction, and then fixing the bend 21 to the mounting side 111 with adhesive to complete the fixed installation of the fin 2.

[0046] In addition, the heat exchanger 100 also includes a connector 4, which passes through multiple straight pipe sections 11 and connects the multiple straight pipe sections 11 to clamp the fins 2. The methods of fixing the fins 2 to the straight pipe sections 11, including adhesive bonding and welding, have been described above and will not be repeated here. The method of fixing the fins 2 to the straight pipe sections 11 can also be that the connector 4 is provided on the heat exchanger 100, and the connector 4, which extends along the second direction, passes through multiple straight pipe sections 11 to fix the multiple straight pipe sections 11 together to clamp and fix the fins 2. At this time, the fin 2 can be positioned away from the connector 4. The connector 4 locks multiple straight pipe sections 11 to clamp the fin 2, ensuring the fin 2 is tightly attached to the mounting side 111, thus achieving a fixed connection. Alternatively, the fin 2 can pass through the connector 4, where it is fixed to the straight pipe section 11 by the clamping of two straight pipe sections 11 and by the limiting position of the connector 4 passing through the fin 2. In the second embodiment of this solution, the connector 4 passes through the straight pipe section 11 and avoids the fin 2, thus avoiding the need for through holes corresponding to the connector 4 on the surface of the fin 2, which would increase processing difficulty and cost. Of course, while the connector 4 is used to connect and fix the straight pipe section 11 and the fin 2, thermally conductive adhesive can also be applied to the contact area between the fin 2 and the mounting side 111. This is not limited here. The fin 2 can be fixed to the straight pipe section 11 by using the connector 4 alone or by using adhesive alone.

[0047] Specifically, the connector 4 includes a screw-in connector or a riveted connector. The connector 4 is a rod-shaped structure extending along the second direction. Based on the above features, the connector 4 can be configured as an elastic telescopic rod connecting the two straight pipe sections 11, and the elastic force of the telescopic rod tightens the two straight pipe sections 11 to fix the fin 2; the connector 4 can also be configured as a screw assembly, with threaded holes provided on the straight pipe sections 11, and the screw is screwed into the threaded holes to connect the two straight pipe sections 11, or after the screw extends out of the two straight pipe sections 11, two nuts are used to lock the two ends of the screw to clamp and fix the two straight pipe sections 11; the connector 4 can also be configured as a riveted connector, which passes through the two straight pipe sections 11 and is riveted to the mounting side 111 of the two straight pipe sections 11 to achieve a fixed connection between the two straight pipe sections 11. All of the above methods can achieve the effect of fixing multiple straight pipe sections 11 together, and are not limited here. Specifically, in the second embodiment, the connector 4 is set as a screw connector, which is convenient to install and has a stable connection. At the same time, the connector 4 passes through three straight pipe sections 11 to fasten the two fins 2.

[0048] Furthermore, the concave-convex structure 3 on the straight pipe section 11 includes a first concave portion 31 and a first convex portion 32 distributed along a third direction; the connector 4 is disposed through the first concave portion 31 on the straight pipe section 11. The connector 4 can be disposed at any position on the straight pipe section 11, and multiple straight pipe sections 11 can be connected and fastened. However, microchannels for refrigerant cannot be disposed near the location of the connector 4 on the straight pipe section 11, which will inevitably affect the heat exchange performance of the flat tube 1. Considering the above factors when setting the connection point of the connector 4, it can be understood that the concave-convex structure 3 is set on the mounting side 111 of the straight pipe section 11. The concave-convex structure 3 affects the distribution of microchannels on the straight pipe section 11. In the first recess 31, the thickness of the straight pipe section 11 along the second direction is relatively thin. The microchannel is set here. The aperture of the microchannel is small, and the amount of refrigerant passing through is small, so it has little impact on the heat exchange function. Therefore, setting the connection point of the connector 4 in the first recess 31 has the least impact on the heat exchange performance of the straight pipe section 11.

[0049] This invention also proposes a refrigeration device, which can be a refrigerator, freezer, air conditioner, etc., and is not limited thereto. In this embodiment, the refrigeration device is a refrigerator. The refrigeration device includes a heat exchanger 100, and the specific structure of the heat exchanger 100 is as described in the above embodiments. Since this refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0050] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heat exchanger, characterized in that, include: A flat tube includes a plurality of straight pipe segments extending in a first direction and spaced apart in a second direction, the straight pipe segments including mounting sides in the second direction; as well as, The fin extends along the first direction and is bent back and forth in the second direction, so that multiple bends are formed on both ends located in the second direction. The fin is disposed between two straight pipe sections, and the bends at both ends of the fin abut against the mounting sides of the two straight pipe sections. The mounting side of the straight tube section and the bent portion of the fin abut against each other are provided with a mutually adaptable concave-convex structure. The width of the flat tube in the second direction is gradually changed along the third direction, so that the concave-convex structure is formed on the two mounting sides of the flat tube. The size of the microchannel in the flat tube is set with the width of the flat tube in the second direction to maintain the wall thickness of the flat tube corresponding to the microchannel, so that the medium thickness at the abutment of the fin and the flat tube and between the fin and the microchannel is consistent.

2. The heat exchanger as described in claim 1, characterized in that, The concave-convex structure on the mounting side of the straight pipe section includes a first concave portion and a first convex portion distributed along a third direction; The concave-convex structure on the bent portion of the fin includes a second convex portion and a second concave portion distributed along the third direction and adapted to the first concave portion and the first convex portion.

3. The heat exchanger as described in claim 1 or 2, characterized in that, The concave-convex structure on the bent portion is formed by stamping.

4. The heat exchanger as described in claim 1, characterized in that, Both the concave and convex parts of the concave-convex structure are arc-shaped.

5. The heat exchanger as described in claim 1, characterized in that, The mounting side of the straight pipe section and the bent portion of the fin are welded or bonded together by adhesive.

6. The heat exchanger as described in claim 1, characterized in that, The heat exchanger also includes a connector that passes through multiple straight pipe sections and connects the multiple straight pipe sections to clamp the fins.

7. The heat exchanger as described in claim 6, characterized in that, The connecting component includes a screw-in component or a riveted component.

8. The heat exchanger as described in claim 6 or 7, characterized in that, The concave-convex structure on the straight pipe section includes a first concave portion and a first convex portion distributed along a third direction; The connector is disposed through the first recess on the straight pipe section.

9. A refrigeration device, characterized in that, Including the heat exchanger as described in any one of claims 1-8.

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