Refrigeration equipment and heat exchanger assembly thereof

Abstract

The invention provides refrigeration equipment and a heat exchanger assembly thereof, and relates to the technical field of refrigeration equipment. The refrigeration equipment and the heat exchanger assembly thereof comprise an equipment shell, an air inlet is fixedly formed in one side of the interior of the equipment shell, two air inlet fans are arranged on the side, close to the air inlet, of the interior of the equipment shell, and a dustproof mechanism is fixedly arranged at the position, close to the middle, of the interior of the equipment shell; and a plurality of connecting strips are fixedly arranged at the position, close to one side of the dustproof mechanism, of the equipment shell, and heat exchange mechanisms are fixedly arranged in the multiple connecting strips. Dynamic adjustment of the heat dissipation area is achieved, the servo motor drives the lead screw to drive the heat dissipation plate to slide, the heat dissipation area can be flexibly changed according to the operation temperature of equipment, heat dissipation is fast at high temperature, dust attachment is reduced at low temperature, automatic dust removal is achieved while heat dissipation is adjusted, a movable rope scratches a dustproof net to be matched with dust collection equipment, and smooth ventilation is effectively kept.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and specifically relates to a refrigeration equipment and its heat exchanger assembly. Background Art

[0002] In the field of refrigeration equipment, as the core component for realizing heat exchange, the performance of the heat exchanger directly affects the operating efficiency and stability of the refrigeration equipment. The existing heat exchangers usually adopt a structural form of arranging a large number of heat dissipation fins with uniform and unchangeable specifications outside the heat dissipation copper tubes, and achieve efficient heat dissipation by accelerating the air flow rate on the surface of the heat dissipation fins. However, this traditional heat exchanger has obvious technical defects in the actual application process: firstly, after long-term use, the surface of the heat dissipation fins is extremely easy to attach dust, and these dusts will form a heat insulation layer on the surface of the fins, hindering the effective transfer of heat and causing a significant decrease in the heat dissipation efficiency of the heat exchanger; secondly, the accumulation of dust will block the gaps between the fins, reducing the ventilation effect and making the air unable to fully contact the heat dissipation fins, further weakening the heat dissipation performance; in addition, the structure of the heat dissipation fins of the traditional heat exchanger is fixed and cannot dynamically adjust the heat dissipation area according to the actual heat dissipation requirements, resulting in an increase in the dust attachment problem due to excessive exposed area when the heat dissipation requirement is low, and the fixed heat dissipation area is difficult to meet the requirements of rapid heat dissipation when the heat dissipation requirement is high. Therefore, there is an urgent need to develop a new type of heat exchanger assembly and refrigeration equipment that can dynamically adjust the heat dissipation area and effectively solve the dust attachment problem, so as to improve the overall performance and service life of the refrigeration equipment. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a refrigeration equipment and its heat exchanger assembly, which solves the problems of easy dust accumulation, low heat dissipation efficiency and inability to dynamically adjust the heat dissipation area of the heat dissipation fins of the traditional heat exchanger.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A refrigeration equipment and its heat exchanger assembly, including an equipment housing and the heat exchanger assembly of the refrigeration equipment, the heat exchanger assembly includes a heat exchange mechanism, an air inlet is fixedly arranged on one side inside the equipment housing, two air inlet fans are arranged on one side of the equipment housing close to the air inlet, a dust prevention mechanism is fixedly arranged at a position close to the middle inside the equipment housing, and a plurality of connecting bars are fixedly arranged at a position of the equipment housing close to the dust prevention mechanism, and a heat exchange mechanism is fixedly arranged inside the plurality of connecting bars; The heat exchange mechanism includes a heat exchange frame. Multiple sliding grooves are provided at both the upper and lower ends of the heat exchange frame. A moving rotating shaft is slidably arranged inside each of the multiple sliding grooves. Fixed rotating shafts are fixedly arranged at both the upper and lower ends of the heat exchange frame, near one side of the multiple moving rotating shafts. A first heat dissipation tube is fixedly arranged between every two of the multiple moving rotating shafts in the vertical direction. A second heat dissipation tube is fixedly arranged between every two of the multiple fixed rotating shafts in the vertical direction. A first heat dissipation plate is fixedly sleeved on the outer surface of each of the multiple first heat dissipation tubes. A second heat dissipation plate is fixedly sleeved on the outer surface of each of the multiple second heat dissipation tubes. Each of the multiple first heat dissipation plates is slidably connected to each of the multiple second heat dissipation plates. Bellows are staggeredly and fixedly connected between the upper and lower ends of each of the multiple first heat dissipation tubes and the upper and lower ends of the adjacent second heat dissipation tubes.

[0005] Preferably, the dust prevention mechanism includes a dust suction frame. A dust prevention net is fixedly arranged inside the dust suction frame. A lifting frame is slidably arranged at a position inside the dust suction frame near the dust prevention net. Two reset springs are fixedly arranged at the lower end of the lifting frame. A pulling rope is fixedly arranged at the middle position of the lower end of the lifting frame.

[0006] Preferably, a plurality of moving ropes are fixedly connected inside the lifting frame, and the plurality of moving ropes closely adhere to the surface of the dust prevention net.

[0007] Preferably, two air extraction pipes are fixedly arranged at the lower end of the dust suction frame, and both of the two air extraction pipes are connected to an external dust suction device.

[0008] Preferably, two moving plates are respectively fixedly arranged between the upper end of the upper layer and the lower end of the lower layer among the multiple moving rotating shafts. Two servo motors are fixedly arranged at both the upper and lower ends of the heat exchange frame. A lead screw is fixedly arranged at the output end of each of the four servo motors. The four lead screws are respectively threadedly sleeved in two of the moving plates in pairs. The other end of the pulling rope penetrates through the dust suction frame and is fixedly connected to one of the two moving plates at the lower end.

[0009] Preferably, two support blocks are fixedly arranged at both the upper and lower ends of the heat exchange frame, and the four lead screws are respectively rotatably arranged inside the four support blocks.

[0010] Preferably, the multiple first heat dissipation tubes, the multiple second heat dissipation tubes, and the multiple bellows are connected to form a connected pipeline. Transmission pipelines are fixedly arranged at both ends of the connected pipeline. An expansion valve and a compressor are respectively fixedly connected to the two transmission pipelines.

[0011] The present invention provides a refrigeration device and its heat exchanger assembly, having the following beneficial effects: The present invention provides a refrigeration device and its heat exchanger assembly. In the heat exchanger assembly of this refrigeration device, a servo motor drives a lead screw to rotate, driving a moving plate and a moving rotating shaft to move, realizing the relative sliding of a first heat dissipation plate and a second heat dissipation plate, and further causing a first heat dissipation tube and a second heat dissipation tube to offset from each other. This design can dynamically adjust the heat dissipation area according to actual heat dissipation requirements. When the operating temperature of the device is too high and the heat dissipation rate is low, the contact area between the heat dissipation plate and the air can be increased, significantly improving the heat dissipation efficiency; when the heat dissipation requirement decreases, the heat dissipation plates can be controlled to overlap, reducing the exposed area, effectively reducing the dust adhesion amount, and taking into account both the heat dissipation performance and the dust prevention effect.

[0012] The present invention provides a refrigeration device and its heat exchanger assembly. This refrigeration device integrates an innovative dust prevention mechanism and a linkage structure of the heat exchanger assembly. During the process of the heat exchanger assembly adjusting the heat dissipation area, the moving plate drives a lifting frame to move through a downward pulling rope, and a moving rope on the lifting frame scrapes the surface of the dust-proof net, scraping off the attached dust, and connecting to an external dust suction device through a dust suction frame and an air extraction pipe to suck away the dust in time. This automatic dust removal mechanism can effectively prevent the ventilation effect from being reduced due to dust accumulation on the dust-proof net, continuously ensure smooth air intake of the heat exchanger, ensure the long-term stable operation of the refrigeration device, and reduce the manual maintenance cost and frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an isometric schematic view of the present invention; Figure 2 is a sectional isometric schematic view of the present invention; Figure 3 is a partial isometric schematic view of the present invention; Figure 4 is an isometric schematic view of the dust prevention mechanism of the present invention; Figure 5 is an isometric schematic view of the heat exchange mechanism of the present invention; Figure 6 of the present invention Figure 5 is an enlarged schematic view of part A; Figure 7 is an isometric schematic view of the heat exchange frame of the present invention; Figure 8 is a partial isometric schematic view of the heat exchange mechanism of the present invention.

[0014] Among them, 1. air inlet; 2. equipment housing; 3. inlet fan; 4. dust-proof mechanism; 5. heat exchange mechanism; 6. connecting strip; 7. expansion valve; 8. compressor; 9. transmission pipeline; 401. moving rope; 402. dust-proof net; 403. dust suction frame; 404. lifting frame; 405. return spring; 406. extraction air pipe; 407. pulling-down rope; 501. first heat dissipation plate; 502. moving plate; 503. heat exchange frame; 504. servo motor; 505. fixed rotating shaft; 506. moving rotating shaft; 507. first heat dissipation pipe; 508. second heat dissipation pipe; 509. second heat dissipation plate; 510. bellows; 511. lead screw; 512. support block; 513. sliding groove. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0016] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a refrigeration device, including an equipment housing. On one side inside the equipment housing, an air inlet 1 is fixedly arranged. On one side of the equipment housing close to the air inlet 1, two inlet fans 3 are arranged. At a position close to the middle inside the equipment housing, a dust-proof mechanism 4 is fixedly arranged. At a position on the equipment housing close to the dust-proof mechanism 4, a plurality of connecting strips 6 are fixedly arranged. Inside the plurality of connecting strips 6, a heat exchange mechanism 5 is fixedly arranged; Specifically, in the above specific embodiment, external air enters the equipment through the air inlet 1 on the equipment housing. The inlet fans 3 operate to accelerate the air flow, so that the air quickly passes through the dust-proof mechanism 4 to filter dust and then flows to the heat exchange mechanism 5. The connecting strips 6 are used to fix the heat exchange mechanism 5 to ensure its stable installation inside the equipment, providing a structural basis for the subsequent heat exchange process. This overall structural design makes the air flow path of the refrigeration device clear. The inlet fans 3 ensure the air flow rate and velocity, providing sufficient air conditions for subsequent heat dissipation; the orderly arrangement of the dust-proof mechanism 4 and the heat exchange mechanism 5 can first remove dust from the air, avoid dust affecting the heat exchange effect, and improve the overall operation efficiency and stability of the refrigeration device.

[0017] As Figure 4As shown in the figure, the dust-proof mechanism 4 includes a dust suction frame 403. Inside the dust suction frame 403, a dust-proof net 402 is fixedly arranged. A lifting frame 404 is slidably arranged at a position close to one side of the dust-proof net 402 inside the dust suction frame 403. At the lower end of the lifting frame 404, two reset springs 405 are fixedly arranged. At the middle position of the lower end of the lifting frame 404, a pull-down rope 407 is fixedly arranged. Inside the lifting frame 404, a plurality of moving ropes 401 are fixedly connected. The plurality of moving ropes 401 closely adhere to the surface of the dust-proof net 402. At the lower end of the dust suction frame 403, two air extraction pipes 406 are fixedly arranged. Both of the two air extraction pipes 406 are connected to an external dust suction device; Specifically, in the above specific embodiment, the dust suction frame 403 is integrally formed by using ABS engineering plastic. The dust-proof net 402 is fixedly arranged inside the dust suction frame 403 through a card slot. The dust-proof net 402 is made of 304 stainless steel material with a mesh number of 100. When air passes through the dust suction frame 403, the dust-proof net 402 intercepts the dust in the air. When the moving plate 502 of the heat exchange mechanism 5 moves, the lifting frame 404 is pulled by the pull-down rope 407 to move downward against the elastic force of the reset spring 405. The moving ropes 401 inside the lifting frame 404 that closely adhere to the surface of the dust-proof net 402 will scrape the surface of the dust-proof net 402, scraping off the attached dust. The scraped-off dust is sucked away by an external dust suction device through the air extraction pipe 406 under a negative pressure of 1500 Pa. When the moving plate 502 moves in the reverse direction, the lifting frame 404 is reset upward under the action of the reset spring 405, preparing for the next dust removal. This dust-proof mechanism 4 realizes the function of automatic dust removal, eliminating the need for manual frequent cleaning of the dust-proof net 402, reducing the maintenance cost and labor intensity. Through the linkage with the heat exchange mechanism 5, dust removal is carried out while the heat exchange mechanism 5 adjusts the heat dissipation area, ensuring that the ventilation effect of the dust-proof net 402 is always good, continuously providing clean air for the heat exchange mechanism 5, and thus guaranteeing the stable operation of the refrigeration equipment.

[0018] As Figures 5 - 8 As shown in the figure, a refrigeration equipment includes a heat exchanger assembly of the refrigeration equipment. The heat exchanger assembly includes a heat exchange mechanism 5. The heat exchange mechanism 5 includes a heat exchange frame 503. A plurality of sliding grooves 513 are respectively opened at the upper and lower ends of the heat exchange frame 503. Inside the plurality of sliding grooves 513, moving rotating shafts 506 are slidably arranged. At positions close to one side of the plurality of moving rotating shafts 506 at the upper and lower ends of the heat exchange frame 503, fixed rotating shafts 505 are respectively fixedly arranged. Between two adjacent moving rotating shafts 506 in the vertical direction, a first heat dissipation pipe 507 is fixedly arranged. Between two adjacent fixed rotating shafts 505 in the vertical direction, a second heat dissipation pipe 508 is fixedly arranged. A first heat dissipation plate 501 is fixedly sleeved on the outer surface of each of the plurality of first heat dissipation pipes 507. A second heat dissipation plate 509 is fixedly sleeved on the outer surface of each of the plurality of second heat dissipation pipes 508. The plurality of first heat dissipation plates 501 are respectively slidably connected to the plurality of second heat dissipation plates 509. Bellows 510 are fixedly connected in an alternating manner between the upper and lower ends of each of the plurality of first heat dissipation pipes 507 and the upper and lower ends of the adjacent second heat dissipation pipes 508; Specifically, in the above specific embodiment, the first heat dissipation tube 507 is made of red copper, with an outer diameter of 10 mm and a wall thickness of 1 mm. The second heat dissipation tube 508 is also made of red copper, with an outer diameter of 10 mm and a wall thickness of 1 mm. The first heat dissipation plate 501 is made of an aluminum corrugated plate, with dimensions of 150 mm × 50 mm × 0.5 mm. The second heat dissipation plate 509 has the same structure as the first heat dissipation plate 501. The corrugated pipe 510 is made of stainless steel, with an inner diameter of 10 mm and a telescopic length of 50 mm. During the heat exchange process, the refrigerant circulates in the communication pipe composed of the first heat dissipation tube 507, the second heat dissipation tube 508, and the corrugated pipe 510. When it is necessary to adjust the heat dissipation area, the servo motor 504 drives the lead screw 511 to rotate. The lead screw 511 is in threaded cooperation with the moving plate 502, causing the moving plate 502 to move. The moving plate 502 drives the moving rotating shaft 506 to slide in the chute 513, so that the first heat dissipation tube 507 and the second heat dissipation tube 508 are offset from each other, and the first heat dissipation plate 501 and the second heat dissipation plate 509 slide relative to each other, increasing or decreasing the contact area with the air. The corrugated pipe 510 has telescopic properties and can adapt to the relative movement of the first heat dissipation tube 507 and the second heat dissipation tube 508 to ensure the flow of the refrigerant. This adjustable heat exchange structure can dynamically adjust the heat dissipation area according to the actual heat dissipation requirements of the refrigeration equipment. When the temperature of the equipment is relatively high, increasing the heat dissipation area can quickly dissipate heat and improve the heat dissipation efficiency; when the temperature of the equipment is relatively low, reducing the heat dissipation area can reduce dust adhesion and extend the service life of the equipment, enabling the refrigeration equipment to operate efficiently under different working conditions.

[0019] As Figures 5 - 8 shown, two moving plates 502 are respectively fixedly arranged between the upper ends and the lower ends of the upper layer and the lower layer among the multiple moving rotating shafts 506. Two servo motors 504 are fixedly arranged at both the upper and lower ends of the heat exchange frame 503. The output ends of the four servo motors 504 are respectively fixedly provided with lead screws 511. The four lead screws 511 are respectively and pairwise threadedly sleeved inside the two moving plates 502. The other end of the lower pull rope 407 passes through the dust suction frame 403 and is fixedly connected to one of the lower ends of the two moving plates 502. Two support blocks 512 are fixedly arranged at both the upper and lower ends of the heat exchange frame 503. The four lead screws 511 are respectively rotatably arranged inside the four support blocks 512. Multiple first heat dissipation tubes 507, multiple second heat dissipation tubes 508, and multiple corrugated pipes 510 are connected to form a connected pipe. Transmission pipes 9 are fixedly arranged at both ends of the connected pipe. The two transmission pipes 9 are respectively fixedly connected with an expansion valve 7 and a compressor 8; Specifically, in the above specific embodiments, the servo motor 504 serves as a power source, and converts the rotational motion into the linear motion of the moving plate 502 through the lead screw 511. The support block 512 provides rotational support for the lead screw 511 to ensure the stability of the rotation of the lead screw 511. The moving plate 502 is connected to the moving rotating shaft 506 to drive the movement of the moving rotating shaft 506, realizing the relative movement of the heat dissipation plate and the heat dissipation pipe. The pull-down rope 407 connects the moving plate 502 and the lifting frame 404, and drives the lifting frame 404 to move when the moving plate 502 moves, realizing the linkage between the heat exchange mechanism 5 and the dust-proof mechanism 4. The refrigerant is connected to the expansion valve 7 and the compressor 8 through the transmission pipeline 9. The transmission pipeline 9 is made of copper pipe, with an outer diameter of 12 mm. The two transmission pipelines 9 are respectively fixedly connected with the expansion valve 7 and the compressor 8 through flanges. The model of the expansion valve 7 is ALCO-R22, and the model of the compressor 8 is Copeland ZR16M3-EPD-522, forming a complete refrigeration cycle loop. This structural design ensures the accuracy and stability of the adjustment process of the heat exchange mechanism 5. The cooperation of the servo motor 504 and the lead screw 511 can accurately control the moving distance of the moving plate 502, thereby precisely adjusting the heat dissipation area. The linkage design between the heat exchange mechanism 5 and the dust-proof mechanism 4 enables the equipment to complete the dust removal work while adjusting the heat dissipation, improving the automation degree and operation efficiency of the equipment, and reducing the complexity of equipment maintenance.

[0020] Working principle: During the operation of this refrigeration equipment, first, the external air is inhaled by the air inlet 1, and the inlet fan 3 accelerates the air flow to make the air enter the equipment interior. When the air passes through the dust-proof mechanism 4, the dust-proof net 402 intercepts the dust in the air to prevent the dust from entering the heat exchanger assembly. When the controller detects that the temperature inside the heat exchanger assembly is too high and the heat dissipation efficiency is insufficient, it sends an instruction to the servo motor 504, and the servo motor 504 starts and drives the lead screw 511 to rotate. When the lead screw 511 rotates, the moving plate 502 threadedly connected to it moves along the direction of the lead screw 511. The moving plate 502 drives the moving rotating shaft 506 to slide in the chute 513, making the first heat dissipation pipe 507 and the second heat dissipation pipe 508 offset from each other, and the first heat dissipation plate 501 and the second heat dissipation plate 509 slide relative to each other. The originally overlapping parts are separated, increasing the contact area with the air, thereby accelerating the heat exchange and improving the heat dissipation efficiency.

[0021] While the moving plate 502 is moving, the downward pulling rope 407 is pulled, driving the lifting frame 404 to move downward against the elastic force of the return spring 405. The moving rope 401 inside the lifting frame 404 is in close contact with the surface of the dust-proof net 402. During the movement of the lifting frame 404, the moving rope 401 scrapes the surface of the dust-proof net 402, scraping off the attached dust. The dust suction frame 403 is connected to an external dust suction device through the air extraction pipe 406, sucking away the scraped dust in time, keeping the dust-proof net 402 clean, and ensuring smooth ventilation. When the heat dissipation efficiency reaches the expectation, the controller controls the servo motor 504 to reverse again, driving the moving plate 502 to move in the reverse direction, so that the first heat dissipation plate 501 and the second heat dissipation plate 509 coincide again, reducing the heat dissipation area and reducing dust adhesion. At the same time, the lifting frame 404 is reset upward under the action of the return spring 405, preparing for the next dust removal. During the whole process, the heat exchanger assembly and the dust-proof mechanism 4 work together to realize the dual functions of efficient heat dissipation and automatic dust removal, ensuring the stable operation of the refrigeration equipment.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration device and a heat exchanger assembly thereof, comprising a device housing (2) and a heat exchanger assembly of the refrigeration device, wherein the heat exchanger assembly comprises a heat exchange mechanism (5), characterized in that: An air inlet (1) is fixedly arranged on one side of the device housing (2); two air inlet fans (3) are arranged on one side of the device housing (2) close to the air inlet (1); a dust prevention mechanism (4) is fixedly arranged near the middle of the device housing (2); a plurality of connecting strips (6) are fixedly arranged at a position on one side of the device housing (2) close to the dust prevention mechanism (4); and a heat exchange mechanism (5) is fixedly arranged inside the plurality of connecting strips (6); The heat exchange mechanism (5) comprises a heat exchange frame (503), a plurality of slide grooves (513) are provided at the upper and lower ends of the heat exchange frame (503), a movable shaft (506) is slidably arranged inside the plurality of slide grooves (513), a fixed shaft (505) is fixedly arranged at the upper and lower ends of the heat exchange frame (503) near one side of the plurality of movable shafts (506), a first heat dissipation pipe (507) is fixedly arranged between each of the plurality of movable shafts (506) in the vertical direction, and the plurality of fixed shafts (505) are fixedly arranged at the upper and lower ends of the heat exchange frame (503) near one side of the plurality of movable shafts (506). Second heat dissipation tubes (508) are fixedly arranged between each pair upwards, a first heat dissipation plate (501) is fixedly sleeved on the outer surfaces of the plurality of first heat dissipation tubes (507), a second heat dissipation plate (509) is fixedly sleeved on the outer surfaces of the plurality of second heat dissipation tubes (508), the plurality of first heat dissipation plates (501) are slidably connected to the plurality of second heat dissipation plates (509) respectively, and corrugated tubes (510) are alternately fixedly connected between the upper and lower ends of the plurality of first heat dissipation tubes (507) and the upper and lower ends of adjacent second heat dissipation tubes (508).

2. A refrigeration device and heat exchanger assembly thereof according to claim 1, characterized in that: The dustproof mechanism (4) comprises a dust suction frame (403), a dustproof net (402) being fixedly arranged inside the dust suction frame (403), a lifting frame (404) being slidably arranged inside the dust suction frame (403) at a position close to one side of the dustproof net (402), two return springs (405) being fixedly arranged at the lower end of the lifting frame (404), and a pull-down rope (407) being fixedly arranged at a middle position of the lower end of the lifting frame (404).

3. A refrigeration device and heat exchanger assembly thereof according to claim 2, characterized in that: A plurality of moving ropes (401) are fixedly connected inside the lifting frame (404), and the plurality of moving ropes (401) are tightly attached to the surface of the dustproof net (402).

4. A refrigeration device and a heat exchanger assembly thereof according to claim 2, characterized in that: Two exhaust pipes (406) are fixedly arranged at the lower end of the dust collection frame (403), and the two exhaust pipes (406) are both connected to external dust collection equipment.

5. A refrigeration device and a heat exchanger assembly thereof according to claim 2, characterized in that: Two movable plates (502) are fixedly arranged between the upper end of the upper layer and the lower end of the lower layer of the plurality of movable rotating shafts (506), two servo motors (504) are fixedly arranged at the upper and lower ends of the heat exchange frame (503), screw rods (511) are fixedly arranged at the output ends of the four servo motors (504), and the four screw rods (511) are respectively threadedly sleeved in pairs inside the two movable plates (502), and the other end of the pull-down rope (407) passes through the dust collection frame (403) and is fixedly connected to one of the lower ends of the two movable plates (502).

6. A refrigeration device and a heat exchanger assembly thereof according to claim 5, characterized in that: Two support blocks (512) are fixedly disposed at the upper and lower ends of the heat exchange frame (503), and the four screw rods (511) are rotatably disposed inside the four support blocks (512) respectively.

7. A refrigeration device and a heat exchanger assembly thereof according to claim 1, characterized in that: A plurality of the first heat dissipation tubes (507), a plurality of the second heat dissipation tubes (508), and a plurality of bellows (510) are interconnected to form a connected pipeline, and transmission pipelines (9) are fixedly arranged at both ends of the connected pipeline, and the two transmission pipelines (9) are respectively fixedly connected to an expansion valve (7) and a compressor (8).

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