A connecting structure of high-thermal-conductivity corrugated fin and heat exchange straight pipe and evaporator
Patent Information
- Application Number
- CN202522019759.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-19
AI Technical Summary
其一，通过焊接将换热直管固定在翅片的通孔处，该方式虽然连接可靠，但是翅片与换热直管之间的接触面积少，热传递效率有待提高；其二，通过胀接工艺连接，即，通过胀管器对换热直管施加压力，使换热直管直径膨胀并与翅片的通孔孔壁形成过盈配合，该方式需要使用专业设备进行加工和安装，成本相对较高；而且，换热直管与翅片之间是胀死连接，因此，当蒸发器工作发生震颤时，容易把换热直管割伤，导致介质泄漏
[0016]本实用新型的有益效果是：本实用新型的高导热波纹翅片与换热直管的连接结构或蒸发器，适配件设于波纹翅片与换热直管之间，避免了震颤时换热直管被割伤的情况发生，另外，换热直管与套管之间的贴合作用以及弧形片与连接部之间的贴合作用，增加传热面积，大大提升了换热效果，同时，翼片的设置增强了弧形片与套管之间的连接强度，使用更加可靠，并且便于组装。
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Figure CN224695101U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of evaporator technology, and in particular to a connection structure between high thermal conductivity corrugated fins and heat exchange straight tubes, and an evaporator. Background Technology
[0002] Evaporators are common heat exchange devices widely used in refrigeration, air conditioning, chemical and other fields. They mainly increase the heat exchange area by using fins, thereby improving the heat exchange efficiency and achieving the purpose of transferring heat from one medium to another.
[0003] An evaporator is generally composed of a frame, fins, and heat exchange tubes. During assembly, the heat exchange tubes are passed through the fins and fixed to each other. Then, the heat exchange tubes are fixedly installed on the frame. When in use, the medium that needs heat exchange flows inside the heat exchange tubes. As it flows through the heat exchange tubes, the heat is transferred to the fins, thereby exchanging heat with the surrounding environment.
[0004] When connecting fins to heat exchanger tubes, a through hole is usually made on the fin first, and then the heat exchanger tube is passed through the through hole and fixedly installed inside. Currently, there are two main methods for fixing the fins and heat exchanger tubes. First, the heat exchanger tube is fixed to the through hole of the fin by welding. Although this method provides a reliable connection, the contact area between the fins and the heat exchanger tube is small, and the heat transfer efficiency needs to be improved. Second, the connection is made through an expansion joint process. That is, pressure is applied to the heat exchanger tube using an expander, causing the diameter of the heat exchanger tube to expand and form an interference fit with the wall of the through hole of the fin. This method requires specialized equipment for processing and installation, and the cost is relatively high. Moreover, the connection between the heat exchanger tube and the fin is a fixed connection, so when the evaporator vibrates during operation, the heat exchanger tube is easily cut, leading to media leakage. Utility Model Content
[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a connection structure between high thermal conductivity corrugated fins and heat exchange straight tubes with high heat exchange efficiency and easy assembly is provided.
[0006] An evaporator with the connection structure of the high thermal conductivity corrugated fins and the heat exchange straight tube is also provided.
[0007] The technical solution adopted by this utility model to solve its technical problem is: a connection structure between a high thermal conductivity corrugated fin and a heat exchange straight tube, including corrugated fins, a heat exchange straight tube, and an adapter. The corrugated fins have arc-shaped connecting parts at the crests and troughs, and some of the connecting parts have through holes. The adapter includes an arc-shaped piece and a sleeve connected to each other. The sleeve passes through the arc-shaped piece. The arc-shaped piece and the connecting part are attached to each other and fixedly connected. The sleeve is inserted into the through hole. The heat exchange straight tube passes through the sleeve and is fixedly connected to the sleeve. A fin is connected between the arc-shaped piece and the sleeve.
[0008] Furthermore, the tangent plane of the end of the connecting part along the protruding direction is perpendicular to the central axis of the sleeve.
[0009] Furthermore, the protruding side of the connecting part is called the protruding side, and the side of the connecting part opposite to the protruding side is called the recessed side, and the arc-shaped piece is fixedly connected to the recessed side of the connecting part.
[0010] Furthermore, the arc-shaped piece and the sleeve are integrally formed.
[0011] Furthermore, the vertical projection shape of the arc-shaped piece onto the tangential plane is rectangular.
[0012] Furthermore, the arc-shaped plate is welded and fixed to the connecting part, and the heat exchange straight tube is welded and fixed to the sleeve.
[0013] Furthermore, the wing has four blades, which are evenly distributed along the circumference of the sleeve on the outer circumferential surface of the sleeve.
[0014] This utility model also provides an evaporator, which includes the connection structure of high thermal conductivity corrugated fins and heat exchange straight tubes as described in any of the preceding claims.
[0015] Furthermore, it also includes a support frame, wherein the corrugated fins are multiple and stacked, the heat exchange straight tubes are multiple, and each heat exchange straight tube passes through multiple corrugated fins. The support frame includes two oppositely arranged fixed plates and multiple connecting columns connected between the two fixed plates. The multiple corrugated fins are located between the two fixed plates. The two ends of the heat exchange straight tubes are respectively fixedly connected to the two fixed plates. A bend is connected between the ends of each pair of adjacent heat exchange straight tubes.
[0016] The beneficial effects of this utility model are as follows: The connection structure or evaporator of the high thermal conductivity corrugated fins and heat exchange straight tube of this utility model, with the adapter set between the corrugated fins and the heat exchange straight tube, avoids the situation where the heat exchange straight tube is cut during vibration. In addition, the fitting effect between the heat exchange straight tube and the sleeve and the fitting effect between the arc-shaped fin and the connecting part increases the heat transfer area and greatly improves the heat exchange effect. At the same time, the setting of the fins enhances the connection strength between the arc-shaped fin and the sleeve, making it more reliable in use and easier to assemble. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram of the connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube of this utility model (the heat exchange straight tube is omitted).
[0019] Figure 2 yes Figure 1 A magnified view of point A in the connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube shown.
[0020] Figure 3 yes Figure 1 A top view of the connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tubes shown.
[0021] Figure 4 yes Figure 3 The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube is shown in a cross-sectional view along BB.
[0022] Figure 5 yes Figure 1 The front view of the connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube is shown.
[0023] Figure 6 This is a schematic diagram of the structure of the evaporator of this utility model.
[0024] In the figure: 1. Corrugated fins, 11. Connecting part, 12. Through hole, 2. Heat exchange straight tube, 3. Adaptor, 31. Arc-shaped plate, 32. Sleeve, 33. Fin, 4. Support, 41. Fixing plate, 42. Connecting column. Detailed Implementation
[0025] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0026] Please see Figures 1-5This utility model provides a connection structure between a high thermal conductivity corrugated fin and a heat exchange straight tube, which is installed on an evaporator. It includes a corrugated fin 1, a heat exchange straight tube 2, and an adapter 3. The corrugated fin 1 has a corrugated sheet structure with crests and troughs. Arc-shaped connecting parts 11 are formed at the crests and troughs of the corrugated fin 1. Through holes 12 are opened on some of the connecting parts 11. The adapter 3 includes an arc-shaped piece 31 and a sleeve 32 that are connected to each other. The sleeve 32 passes through the arc-shaped piece 31. The arc-shaped piece 31 and the connecting parts 11 are attached to each other and fixedly connected. The sleeve 32 is inserted into the through hole 12. The heat exchange straight tube 2 passes through the sleeve 32 and is fixedly connected to the sleeve 32. A fin 33 is connected between the arc-shaped piece 31 and the sleeve 32.
[0027] The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube of this utility model does not directly connect the heat exchange straight tube 2 and the through hole 12 of the corrugated fin 1. Instead, the heat exchange straight tube 2 and the corrugated fin 1 are separated by the adapter 3. When the evaporator vibrates, the corrugated fin 1 will not cut the heat exchange straight tube 2, thus avoiding leakage of the medium inside the heat exchange straight tube 2.
[0028] During installation, the sleeve 32 engages with the through hole 12, and the arc-shaped piece 31 fits into the arc-shaped connecting part 11, restricting the adapter 3 from rotating relative to the corrugated fin 1. This also helps the user to quickly install the adapter 3 onto the connecting part 11 of the corrugated fin 1.
[0029] In use, the heat of the medium flowing through the heat exchange straight tube 2 can be transferred to the corrugated fins 1 through the adapter 3. Because the outer wall of the heat exchange straight tube 2 is in contact with the inner wall of the sleeve 32, and the arc-shaped fin 31 is in contact with the arc-shaped surface of the connecting part 11, the heat transfer area is increased, allowing the heat on the heat exchange straight tube 2 to be efficiently transferred to the sleeve 32. Simultaneously, the heat on the arc-shaped fin 31 can be efficiently transferred to the connecting part 11 of the corrugated fins 1, greatly improving the heat transfer effect. Furthermore, the close contact between the heat exchange straight tube 2 and the sleeve 32, and between the arc-shaped fin 31 and the connecting part 11, enhances the reliability of the connection between them, making them less prone to detachment. Further, the fins 33 disposed between the arc-shaped fin 31 and the sleeve 32 serve two purposes: firstly, the fins 33 can act as reinforcing ribs, strengthening the connection between the arc-shaped fin 31 and the sleeve 32; secondly, the fins 33 also increase the surface area of the adapter 3, increasing the heat transfer area and further improving the heat transfer efficiency.
[0030] In a preferred embodiment, the tangent plane γ at the end of the connecting portion 11 along the protruding direction is perpendicular to the central axis of the sleeve 32. Figure 5The directions shown are reference directions. For the crests of the corrugated fins 1, the tangent plane γ at the end of the connecting part 11 along the protruding direction is a horizontal plane passing through the top edge of the connecting part 11; while for the troughs of the corrugated fins 1, the tangent plane γ at the end of the connecting part 11 along the protruding direction is a horizontal plane passing through the bottom edge of the connecting part 11. In specific installation, the sleeve 32 is inserted into the through hole 12, and with the arc-shaped piece 31 and the connecting part 11 in mutual contact, it can be ensured that the central axis of the sleeve 32 is perpendicular to the tangent plane γ at the end of the connecting part 11 along the protruding direction. In this way, when multiple corrugated fins 1 are stacked and aligned, the sleeves 32 connected to the corresponding positions on different corrugated fins 1 can always maintain a coaxial state, which facilitates the simultaneous alignment and passage of the heat exchange straight tube 2 through multiple sleeves 32, greatly simplifying the installation operation.
[0031] Regarding the corrugated fin 1 at the connecting portion 11, the protruding side of the connecting portion 11 is the protruding side A, and the side of the connecting portion 11 opposite to the protruding side A is the recessed side B. In this embodiment, the arc-shaped piece 31 is fixedly connected to the recessed side B of the connecting portion 11. It is understood that in other embodiments not shown, the arc-shaped piece 31 may also be connected to the protruding side A of the connecting portion 11, which is not limited here.
[0032] As a preferred embodiment, the arc-shaped piece 31 and the sleeve 32 are integrally formed, which facilitates processing and helps control production costs. Of course, in other embodiments, the sleeve 32 and the arc-shaped piece 31 can also adopt a separate welded connection structure. For example, the sleeve 32 can be inserted through the arc-shaped piece 31 first, and then the two can be welded together. The advantage of doing so is that it is convenient for transportation. The arc-shaped pieces 31 can be stacked in sequence, and the sleeves 32 can be neatly packed into boxes. The welding operation can be carried out after the raw materials are transported to the installation position.
[0033] In this embodiment, the vertical projection shape of the arc-shaped piece 31 onto the tangent plane γ is rectangular. In other embodiments, the vertical projection shape of the arc-shaped piece 31 onto the tangent plane γ can also be circular, elliptical, or other polygonal, and is not limited here.
[0034] In a preferred embodiment, the arc-shaped plate 31 is welded and fixed to the connecting part 11, and the heat exchange straight tube 2 is welded and fixed to the sleeve 32.
[0035] In this embodiment, there are four winglets 33, which are evenly distributed on the outer circumferential surface of the sleeve 32 along the circumference of the sleeve 32.
[0036] Please see Figure 6This utility model also provides an evaporator, which includes the aforementioned connection structure of high thermal conductivity corrugated fins and heat exchange straight tubes, and also includes a support 4. There are multiple corrugated fins 1 stacked together, and multiple heat exchange straight tubes 2, with each heat exchange straight tube 2 passing through multiple corrugated fins 1. The support 4 includes two oppositely arranged fixing plates 41 and multiple connecting columns 42 fixedly connected between the two fixing plates 41. The multiple corrugated fins 1 are located between the two fixing plates 41. The two ends of the heat exchange straight tubes 2 are respectively fixedly connected to the two fixing plates 41. In addition, a bend (not shown in the figure) is connected between the ends of each pair of adjacent heat exchange straight tubes 2 so that the multiple heat exchange straight tubes 2 are interconnected to form a channel for medium flow.
[0037] The evaporator of this utility model has all the technical features of the connection structure of high thermal conductivity corrugated fins and heat exchange straight tubes, and therefore has the same technical effect as the connection structure of high thermal conductivity corrugated fins and heat exchange straight tubes.
[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A connection structure between high thermal conductivity corrugated fins and a heat exchange straight tube, characterized in that: The device includes corrugated fins, a heat exchange straight tube, and an adapter. The corrugated fins have arc-shaped connecting parts at the crests and troughs, and some of the connecting parts have through holes. The adapter includes an arc-shaped plate and a sleeve that are connected to each other. The sleeve passes through the arc-shaped plate, and the arc-shaped plate and the connecting part are fitted together and fixedly connected. The sleeve is inserted into the through hole. The heat exchange straight tube passes through the sleeve and is fixedly connected to the sleeve. A fin connects the arc-shaped plate and the sleeve.
2. The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube as described in claim 1, characterized in that: The tangent plane at the end of the connecting part along the protruding direction is perpendicular to the central axis of the sleeve.
3. The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube as described in claim 1 or 2, characterized in that: The protruding side of the connecting part is called the protruding side, and the side of the connecting part opposite to the protruding side is called the recessed side. The arc-shaped piece is fixedly connected to the recessed side of the connecting part.
4. The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube as described in claim 1, characterized in that: The arc-shaped piece and the sleeve are integrally formed.
5. The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube as described in claim 2, characterized in that: The vertical projection shape of the arc-shaped piece onto the tangential plane is rectangular.
6. The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube as described in claim 1, characterized in that: The arc-shaped plate is welded and fixed to the connecting part, and the heat exchange straight tube is welded and fixed to the sleeve.
7. The connection structure between the high thermal conductivity corrugated fins and the heat exchange straight tube as described in claim 1, characterized in that: The sleeve has four blades, which are evenly distributed on the outer circumferential surface of the sleeve along the circumference.
8. An evaporator, characterized in that: The evaporator includes the connection structure of high thermal conductivity corrugated fins and heat exchange straight tubes as described in any one of claims 1-7.
9. The evaporator as described in claim 8, characterized in that: It also includes a support frame, the corrugated fins are multiple and stacked, the heat exchange straight tubes are multiple, and each heat exchange straight tube passes through multiple corrugated fins. The support frame includes two oppositely arranged fixed plates and multiple connecting columns connected between the two fixed plates. The multiple corrugated fins are located between the two fixed plates. The two ends of the heat exchange straight tubes are respectively fixedly connected to the two fixed plates. A bend is connected between the ends of each pair of adjacent heat exchange straight tubes.