Heat exchanger for heat pump circulation

Abstract

The utility model discloses a heat exchanger for heat pump circulation. The heat exchanger comprises a base tube and a plurality of fin sets detachably arranged on the base tube. The fin group comprises a first fin and a second fin; a plurality of buckling parts are arranged between the first fins and the second fins, the first fins and the second fins are assembled and disassembled from the base tube through the buckling parts, lossless assembling and disassembling, interval adjustment and local replacement of the fins are achieved through the design of the modularized fin set, the manufacturing efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger for heat pump circulation. Background Technology

[0002] Finned-tube heat exchangers, as core components of heat pumps, air conditioning systems, and industrial waste heat recovery systems, significantly improve the heat exchange efficiency between gases (such as air) and fluids (refrigerant, water, etc.) by expanding the heat transfer area through fins. Traditional manufacturing processes for finned-tube heat exchangers typically involve welding metal fins (such as aluminum fins) to the base tube (copper tube, steel tube, etc.). However, in actual production and application, this process faces the following technical bottlenecks:

[0003] 1. During the welding process, the high temperature heat input causes uneven heating of the fins in some areas, resulting in thermal stress deformation. Deformed fins are prone to uneven distribution of air flow field on the air side, which further affects the heat exchange efficiency.

[0004] 2. The welding process is time-consuming: Welding requires positioning and welding each piece individually, resulting in low production efficiency and difficulty in meeting the needs of mass production.

[0005] 3. Welded fins are difficult to replace, and the number and spacing of fins cannot be adjusted after manufacturing. This makes it impossible for the heat exchanger to flexibly optimize the fin layout according to actual working conditions, which limits the expansion of its application scenarios. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a heat exchanger for heat pump circulation. Through a modular fin assembly design, it enables non-destructive disassembly and assembly, spacing adjustment, and partial replacement of fins, thereby improving manufacturing efficiency and reducing maintenance costs.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a heat exchanger for heat pump circulation, comprising a base tube and a plurality of fin groups detachably disposed on the base tube;

[0008] The fin assembly includes a first fin and a second fin;

[0009] Several fastening parts are provided between the first fin and the second fin, and the first fin and the second fin are connected to and disconnected from the base tube through the fastening parts.

[0010] In the above scheme, preferably, the first fin and the second fin are provided with a first arc-shaped plate and a second arc-shaped plate that match the outer diameter of the base tube, and the fastening part is provided between the first arc-shaped plate and the second arc-shaped plate.

[0011] In the above scheme, preferably, the fastening part includes a plurality of protrusions on the first arc plate and a plurality of grooves on the second arc plate, and the fastening part achieves fastening and disassembly through the cooperation of the protrusions and the grooves.

[0012] In the above scheme, preferably, the protrusion is provided with recessed portions on both sides, and the groove opening is provided with clamping portions that are adapted to the recessed portions.

[0013] In the above scheme, preferably, the protrusion is formed by extending outward along the circumferential direction from the middle of both ends of the first arc-shaped plate, and the groove is formed by recessing inward along the circumferential direction from the middle of both ends of the second arc-shaped plate.

[0014] In the above scheme, preferably, the first fin and the second fin are both integrally formed, and their material is aluminum or copper.

[0015] In the above scheme, preferably, both the first arc-shaped plate and the second arc-shaped plate are semi-circular plates, which form heat-conducting holes that are compatible with the base tube after being fastened together by the fastening part.

[0016] In the above scheme, preferably, the fin group is provided with locking parts at both ends, the locking part includes a latch that is rotatably connected to any fin at one end, and the other end of the latch is fastened to another fin.

[0017] In the above scheme, preferably, the first fin or the second fin is provided with a locking hole that cooperates with the latch, and the latch is provided with a locking pin that cooperates with the locking hole.

[0018] In the above scheme, preferably, the latch includes a slot, and the locking pins are symmetrically arranged on both sides of the slot.

[0019] The beneficial effects of this utility model are:

[0020] 1. Detachable design: The fin assembly can be quickly installed or removed through a snap-fit ​​structure, avoiding welding deformation and reducing contact thermal resistance;

[0021] 2. Flexible adjustment: The number and spacing of fins can be increased, decreased or rearranged as needed to adapt to different working conditions;

[0022] 3. Easy maintenance: When a part of the fin is damaged, it can be replaced individually without the need for complete disassembly, saving costs;

[0023] 4. Stable structure: The locking part and the fastening part are double fixed to ensure that the fin assembly and the base tube are tightly attached to each other, thereby improving the heat transfer efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 2This is a schematic diagram of the structure of the base tube and fin assembly of this utility model.

[0026] Figure 3 This is an exploded perspective view of the fin assembly of this utility model.

[0027] Figure 4 This is a perspective view of the fin assembly of this utility model.

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the latch of this utility model.

[0029] Figure 6 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0030] Figure 7 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-7 ,

[0032] like Figure 1 As shown, the heat exchanger includes a base tube 1 and multiple fin groups 2 arranged along the axial direction of the base tube 1; the base tube 1 is a copper tube or a steel tube; the base tube 1 is arranged in a serpentine coil, and the fin group 2 is formed by connecting the first fin 201 and the second fin 202 through a fastening part 203, and multiple fastening parts 203 are arranged according to the number of times the base tube 1 is coiled along the axial direction, and each fastening part 203 is fastened to the base tube 1; the first fin 201 and the second fin 202 are made of aluminum or copper, and the first fin 201 and the second fin 202 are both integrally stamped.

[0033] like Figures 2-4 As shown, the inner sides of the first fin 201 and the second fin 202 are respectively provided with a semi-circular first arc plate 101 and a second arc plate 102. After the two are fastened together, they form a circular heat conduction hole 3 that matches the outer diameter of the base tube 1. That is, after the first fin 201 and the second fin 202 are fitted with the base tube 1, the inner wall of their arc plate is attached to the outer wall of the base tube 1, thereby conducting heat of the fluid in the base tube 1.

[0034] The first arc-shaped plate 101 has protrusions 103 extending outward from the middle of both ends along the circumferential direction at corresponding positions, and the second arc-shaped plate 102 has inwardly recessed grooves 104 at the middle of both ends. During installation, the arc-shaped plates of the first fin 201 and the second fin 202 are wrapped around the outer surface of the base tube 1, and the protrusions 103 are inserted into the grooves 104 to complete the fastening. Figure 2 As shown.

[0035] like Figure 6 and Figure 7 As shown, in order to improve the fastening stability, recesses 105 are symmetrically arranged on both sides of the protrusion 103, and the groove 104 extends inward by a certain distance on both sides to form clamping parts 106. When fastening, the clamping parts 106 are inserted into the recesses 105, and the clamping force is generated by elastic deformation to prevent the fin assembly 2 from loosening. The protrusion 103 is elastically attached to the outer wall of the base tube 1 and slides and fastens with the groove 104 according to its material.

[0036] like Figure 3 and Figure 5 As shown, the fin assembly 2 has locking parts 4 at both ends; the locking part 4 includes a latch 401, one end of which is rotatably connected to the first fin 201 via a pivot, and the other end is provided with a locking pin 403; a locking hole 402 is opened at the corresponding position on the second fin 202; the latch 401 is provided with a slot 404 near the fin, and the locking pin 403 is symmetrically arranged on the inner walls of both sides of the slot 404, and the latch 401 is made of elastic material, preferably spring steel. When the fin assembly 2 is fastened, the latch 401 is rotated to make the slot 404 engage with the second fin 202, and the locking pin 403 is inserted into the locking hole 402 after being tightly attached to the outer wall of the second fin 202 according to the elastic deformation of the latch 401, further enhancing the connection strength.

[0037] When the number of fins needs to be adjusted, slide the fin group 2 along the axis of the base tube 1 to the target position and then lock it in place; if a fin group 2 is damaged, simply open the locking part 4 and separate the fastening part 203 to remove it from the base tube 1 for replacement, without disassembling adjacent fin groups.

[0038] The method of using a heat exchanger for a heat pump cycle as described above:

[0039] Installation process: The first fin 201 and the second fin 202 are wrapped around the base tube 1, so that the protrusion 103 and the groove 104 are engaged to form an annular heat conduction hole 3; the rotating lock 401 fixes the locking part 4.

[0040] Heat transfer process: The fluid inside the base tube 1 exchanges heat with the outside air through the fin assembly 2. The fins expand the heat transfer area and improve the heat exchange efficiency.

[0041] Maintenance and adjustment: Unlock the locking part 4 and separate the fastening part 203 to adjust the position of the fin assembly 2 or replace the damaged parts.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat exchanger for a heat pump cycle, characterized in that: It includes a base tube (1) and several fin assemblies (2) that are detachably mounted on the base tube (1); The fin assembly (2) includes a first fin (201) and a second fin (202); A plurality of fastening parts (203) are provided between the first fin (201) and the second fin (202), and the first fin (201) and the second fin (202) are connected to and disconnected from the base tube (1) through the fastening parts (203).

2. A heat exchanger for a heat pump cycle according to claim 1, characterized in that: The first fin (201) and the second fin (202) are provided with a first arc plate (101) and a second arc plate (102) that are compatible with the outer diameter of the base tube (1), and the fastening part (203) is provided between the first arc plate (101) and the second arc plate (102).

3. A heat exchanger for a heat pump cycle according to claim 2, characterized in that: The fastening part (203) includes several protrusions (103) on the first arc plate (101) and several grooves (104) on the second arc plate (102). The fastening part (203) achieves fastening and disassembly through the cooperation of the protrusions (103) and the grooves (104).

4. A heat exchanger for a heat pump cycle according to claim 3, characterized in that: The protrusion (103) has symmetrical recesses (105) on both sides, and the groove (104) has symmetrical clamping parts (106) that are adapted to the recesses (105) at the opening.

5. A heat exchanger for a heat pump cycle according to claim 3, characterized in that: The protrusion (103) is formed by extending outward along the circumferential direction from the middle of both ends of the first arc plate (101), and the groove (104) is formed by recessing inward along the circumferential direction from the middle of both ends of the second arc plate (102).

6. A heat exchanger for a heat pump cycle according to claim 1, characterized in that: The first fin (201) and the second fin (202) are both integrally formed and are made of aluminum or copper.

7. A heat exchanger for a heat pump cycle according to claim 2, characterized in that: The first arc plate (101) and the second arc plate (102) are both semi-circular plates, which are fastened together by the fastening part (203) to form a heat-conducting hole (3) that is compatible with the base tube (1).

8. A heat exchanger for a heat pump cycle according to claim 1, characterized in that: The fin assembly (2) is provided with locking parts (4) at both ends. The locking part (4) includes a latch (401) that is rotatably connected to any fin at one end, and the other end of the latch (401) is engaged with another fin.

9. A heat exchanger for a heat pump cycle according to claim 8, characterized in that: The first fin (201) or the second fin (202) is provided with a locking hole (402) that cooperates with the latch (401), and the latch (401) is provided with a locking pin (403) that cooperates with the locking hole (402).

10. A heat exchanger for a heat pump cycle according to claim 9, characterized in that: The latch (401) includes a slot (404), and the locking pins (403) are symmetrically arranged on both sides of the slot (404).

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