Defrosting device of fin type heat exchanger

Abstract

The defrosting device comprises a table body, fins are fixed to the front wall of the table body, a defrosting frame is fixed to the front wall of the table body, a vertical rod is arranged on the upper wall of the defrosting frame in a penetrating mode and rotationally connected to the upper wall of the defrosting frame, a rotating disc is coaxially fixed to the lower end of the vertical rod, and a rotating block is fixed to the lower wall of the rotating disc, away from the circle center of the rotating disc and rotationally connected with a connecting plate. A pushing plate is slidably connected to the position, located at the upper ends of the fins, of the table body, the pushing plate and the fins work in a matched mode, the pushing plate is fixedly connected with a connecting block, the connecting plate is rotatably connected with the connecting block through a rotating shaft, the rotating disc rotates, and the pushing plate and the fins are periodically slidably connected and separated. Therefore, the defrosting plate and the lower bottom plate move upwards, cold frost on the fins is pushed, part of the cold frost falls down, and part of the cold frost is pushed to the tops of the fins to be gathered. Rotation of the connecting rod drives the vertical rod and the rotating disc to rotate, so that the pushing plate moves front and back, and cold frost gathered at the tops of the fins is pushed and falls off.

Description

Technical Field

[0001] The present application relates to the technical field of fin heat exchangers, and in particular to a defrosting device for a fin heat exchanger. Background Art

[0002] Fin heat exchanger is a common heat exchange equipment, usually used for heating, cooling or evaporating fluid. Its main structure includes a series of neatly arranged metal fins, which increase the heat exchange surface area and thus improve the heat exchange efficiency. Fin heat exchanger is usually composed of fin tube bundle and shell, and the fluid exchanges heat through the inner and outer walls of the fin tube bundle respectively. The working principle of fin heat exchanger is to achieve heat transfer by the flow of fluid between fins. When the hot fluid passes through the surface of the fin tube bundle, it contacts with the fins and transfers heat, while the cold fluid flows between the fins and absorbs heat, thereby achieving heat transfer and temperature regulation.

[0003] When the fin heat exchanger is in use, it is usually necessary to place the outdoor unit outside. When the surface temperature of the fin heat exchanger is lower than the outside temperature and lower than zero degrees Celsius, frost will form on the outer surface of the fin heat exchanger, thereby affecting the heat exchange function of the heat exchanger body and reducing the heating performance of the heater. The "Publication No. 'CN214095719U' A Mechanical Defrosting Device for Fin Heat Exchanger" discloses that by setting a moving mechanism, a linkage mechanism, a fixing bar and a moving rod to cooperate with each other, when the fin heat exchanger body is placed outside for a long time, the fin heat exchanger body will not be frozen. When frost occurs on the surface, a more effective defrosting effect is achieved, and the frost layer on the fin heat exchanger body is avoided, thereby affecting the normal operation of the outdoor unit, and improving the heating performance and service life of the heater. However, the above-mentioned defrosting device is to move the moving plate up and down on the front side of the outdoor unit, so that the brush can defrost the fin heat exchanger body. In this defrosting method, the cold frost is pushed and may be stuck at the upper and lower ends of the fin heat exchanger body. After multiple accumulations, due to the low temperature of the outside, it may solidify together, which is not conducive to subsequent defrosting and the use of the heat exchanger. Therefore, in order to solve the above problems, the present application provides a fin heat exchanger defrosting device.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that during defrosting, cold frost is pushed to gather at the upper and lower ends of the fin heat sink and may solidify together, the present application provides a fin heat exchanger defrosting device.

[0006] The present application provides a defrosting device for a fin heat exchanger, comprising a body, a front wall of the body being fixedly provided with fins, a defrost frame being fixedly provided with the front wall of the body, an upper wall of the defrost frame being penetrated by and rotatably connected with a vertical rod, a lower end of the vertical rod being coaxially fixedly connected with a turntable, a lower wall of the turntable being fixedly connected with a rotating block, the rotating block being away from the center of the turntable, the rotating block being rotatably connected with a connecting plate, a pushing plate being slidably connected with the body at the upper end of the fin, the pushing plate working in cooperation with the fin, the pushing plate being fixedly connected with the connecting block, the connecting plate being rotatably connected with the connecting block through a rotating shaft, and when the turntable rotates, the pushing plate and the fin are periodically slidably connected and separated from each other.

[0007] Preferably, a defrost plate is slidably connected inside the defrost frame, a lower base plate is arranged below the defrost plate, the defrost plate is fixedly connected to the lower base plate via two fixing rods, and both the defrost plate and the lower base plate cooperate with the fins.

[0008] Preferably, sliding grooves are provided through both side walls of the defrost frame, sliders are slidably provided in the sliding grooves, and both ends of the defrost plate are fixedly connected to the sliders respectively.

[0009] Preferably, a sliding rod is fixedly connected in the sliding groove on the right side, and the sliding rod passes through the sliding block and is slidably connected thereto.

[0010] Preferably, a screw is rotatably connected in the sliding groove on the left side, the screw passes through the sliding block and is threadedly connected thereto, a connecting rod is coaxially fixedly connected to the upper end of the screw, and the upper end of the connecting rod passes through the defrost frame and is rotatably connected thereto.

[0011] Preferably, the upper end of the connecting rod is coaxially fixedly connected with the first bevel gear, a protective box is fixedly provided on the upper wall of the platform, a motor is fixedly provided inside the protective box, the rotating shaft of the motor is coaxially fixedly connected with the rotating rod, the rotating rod is coaxially fixedly connected with the second bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0012] Preferably, a transmission belt is wound around the outer walls of the connecting rod and the vertical rod, and the connecting rod is transmitted to the vertical rod through the transmission belt.

[0013] Preferably, a base is fixedly connected below the platform body.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] By starting the motor, the connecting rod rotates to drive the screw to rotate, thereby driving the defrost plate and the lower bottom plate to move upward, pushing the frost on the fins, causing some of the frost to fall and some of the frost to be pushed to the top of the fins and gather; the rotation of the connecting rod drives the vertical rod and the turntable to rotate, thereby pushing the plate back and forth, pushing the frost gathered on the top of the fins and making it fall. Compared with the comparative documents, this device effectively solves the problem of frost getting stuck on the upper end of the fins and improves the defrosting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure from a first viewing angle in the first embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the overall structure of the second viewing angle in the first embodiment of the present application;

[0018] Figure 3 It is the embodiment of the present application Figure 1 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 4 It is a schematic diagram of the cooperation between the push plate and the fin in the first embodiment of the present application.

[0020] Explanation of the accompanying drawings: 1. body; 2. base; 3. defrost frame; 4. fin; 5. defrost plate; 6. slider; 7. sliding groove; 8. slide rod; 9. screw rod; 10. lower base plate; 11. fixed rod; 12. connecting rod; 13. first bevel gear; 14. second bevel gear; 15. rotating rod; 16. protective box; 17. transmission belt; 18. vertical rod; 19. turntable; 20. rotating block; 21. connecting plate; 22. rotating shaft; 23. connecting block; 24. pushing plate. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-4 This application is described in further detail.

[0022] Embodiment 1

[0023] Reference Figure 1-4 A defrosting device for a fin heat exchanger includes a body 1, and a base 2 is fixedly connected to the bottom of the body 1. Fins 4 are fixedly arranged on the front wall of the body 1, and a defrosting frame 3 is fixedly arranged on the front wall of the body 1. A vertical rod 18 is set through the upper wall of the defrosting frame 3 and is rotatably connected. A turntable 19 is coaxially fixedly connected to the lower end of the vertical rod 18, and a rotating block 20 is fixedly connected to the lower wall of the turntable 19. The rotating block 20 is away from the center of the turntable 19, and the rotating block 20 is rotatably connected to a connecting plate 21. A push plate 24 is slidably connected to the upper end of the body 1 at the fin 4, and the push plate 24 cooperates with the fin 4. The push plate 24 is fixedly connected to the connecting block 23, and the connecting plate 21 is rotatably connected to the connecting block 23 through a rotating shaft 22. When the turntable 19 rotates, the push plate 24 and the fin 4 are periodically slidably connected and separated.

[0024] A defrost plate 5 is slidably connected inside the defrost frame 3, and a lower base plate 10 is arranged below the defrost plate 5. The defrost plate 5 is fixedly connected to the lower base plate 10 through two fixing rods 11. The defrost plate 5 and the lower base plate 10 both work in conjunction with the fins 4. The shapes of the defrost plate 5 and the lower base plate 10 both match the fins 4, and the fins 4 can be defrosted by sliding. Sliding grooves 7 are provided through both side walls of the defrost frame 3, and sliders 6 are slidably arranged in the sliding grooves 7. Both ends of the defrost plate 5 are fixedly connected to the sliders 6. A sliding rod 8 is fixedly connected in the right sliding groove 7, and the sliding rod 8 penetrates the slider 6 and is slidably connected thereto. A screw rod 9 is rotatably connected in the left sliding groove 7, and the screw rod 9 penetrates the slider 6 and is threadedly connected thereto. A connecting rod 12 is coaxially fixedly connected to the upper end of the screw rod 9, and the upper end of the connecting rod 12 penetrates the defrost frame 3 and is rotatably connected thereto.

[0025] The upper end of the connecting rod 12 is coaxially fixedly connected with a first bevel gear 13, a protective box 16 is fixedly provided on the upper wall of the platform body 1, a motor is fixedly provided inside the protective box 16, the rotating shaft of the motor is coaxially fixedly connected with a rotating rod 15, the rotating rod 15 is coaxially fixedly connected with a second bevel gear 14, and the first bevel gear 13 is meshed with the second bevel gear 14. A transmission belt 17 is wound around the outer wall of the connecting rod 12 and the vertical rod 18, and the connecting rod 12 is driven by the transmission belt 17 and the vertical rod 18.

[0026] In the actual working process, the initial position of the lower bottom plate 10 is set in contact with the bottom end of the fin 4. When the fin 4 produces cold frost, the motor in the protective box 16 is started. The motor is a servo motor, and the rotating rod 15 rotates, driving the connecting rod 12 and the screw 9 to rotate, so that the defrost plate 5 and the lower bottom plate 10 reciprocate. Through the setting of the motor, the uppermost end of the defrost plate 5 and the lower bottom plate 10 is located below the push plate 24, and the lowermost end is located at the bottom of the fin 4. The defrost plate 5 and the lower bottom plate 10 are both slidably connected with the fin 4 and work in coordination. The cold frost on the fin 4 is pushed, part of the cold frost falls, and part of the cold frost is pushed to the top of the fin 4 to gather; the rotation of the connecting rod 12 drives the vertical rod 18 and the turntable 19 to rotate through the transmission belt 17, so that the connecting plate 21 moves, and the push plate 24 moves back and forth to periodically slide and connect and separate with the fin 4, so as to push the cold frost gathered on the top of the fin 4 and make it fall.

[0027] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0028] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fin heat exchanger defrosting device, comprising a body (1), characterized in that: The front wall of the table body (1) is fixedly provided with a fin (4), the front wall of the table body (1) is fixedly provided with a defrost frame (3), the upper wall of the defrost frame (3) is penetrated by a vertical rod (18) and is rotatably connected, the lower end of the vertical rod (18) is coaxially fixedly connected with a turntable (19), the lower wall of the turntable (19) is fixedly connected with a rotating block (20), the rotating block (20) is away from the center of the turntable (19), the rotating block (20) is rotatably connected with a connecting plate (21), the table body (1) is slidably connected with a push plate (24) at the upper end of the fin (4), the push plate (24) cooperates with the fin (4), the push plate (24) is fixedly connected with a connecting block (23), the connecting plate (21) is rotatably connected with the connecting block (23) through a rotating shaft (22), the turntable (19) rotates, and the push plate (24) and the fin (4) are periodically slidably connected and separated.

2. The fin heat exchanger defrosting device according to claim 1, characterized in that: A defrost plate (5) is slidably connected inside the defrost frame (3), a lower base plate (10) is arranged below the defrost plate (5), the defrost plate (5) is fixedly connected to the lower base plate (10) via two fixing rods (11), and both the defrost plate (5) and the lower base plate (10) cooperate with the fins (4) to work.

3. A fin heat exchanger defrosting device according to claim 2, characterized in that: Both side walls of the defrost frame (3) are provided with sliding grooves (7) running through them, and sliding blocks (6) are slidably provided in the sliding grooves (7), and both ends of the defrost plate (5) are respectively fixedly connected to the sliding blocks (6).

4. The defrosting device for a fin heat exchanger according to claim 3, characterized in that: A sliding rod (8) is fixedly connected inside the sliding groove (7) on the right side, and the sliding rod (8) passes through the sliding block (6) and is slidably connected thereto.

5. The fin heat exchanger defrosting device according to claim 3, characterized in that: A screw rod (9) is rotatably connected in the sliding groove (7) on the left side, the screw rod (9) passes through the sliding block (6) and is threadedly connected thereto, the upper end of the screw rod (9) is coaxially fixedly connected to a connecting rod (12), the upper end of the connecting rod (12) passes through the defrost frame (3) and is rotatably connected thereto.

6. The fin heat exchanger defrosting device according to claim 5, characterized in that: The upper end of the connecting rod (12) is coaxially fixedly connected to a first bevel gear (13); a protective box (16) is fixedly arranged on the upper wall of the platform body (1); a motor is fixedly arranged inside the protective box (16); the rotating shaft of the motor is coaxially fixedly connected to a rotating rod (15); the rotating rod (15) is coaxially fixedly connected to a second bevel gear (14); and the first bevel gear (13) is meshed with the second bevel gear (14).

7. The defrosting device for a fin heat exchanger according to claim 5, characterized in that: A transmission belt (17) is wound around the outer walls of the connecting rod (12) and the vertical rod (18), and the connecting rod (12) is driven by the transmission belt (17) and the vertical rod (18).

8. The fin heat exchanger defrosting device according to claim 1, characterized in that: A base (2) is fixedly connected below the platform body (1).

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