Defrosting equipment for small refrigeration house
By designing automated cold storage defrosting equipment, which uses a motor-driven threaded rod and slide rail system to drive the cleaning brush, combined with a heating and fan system, the problem of time-consuming and labor-intensive manual defrosting in cold storage is solved. This achieves efficient and safe frost removal, improving the energy efficiency of the refrigeration system and the lifespan of the equipment.
Patent Information
- Application Number
- CN202520491960.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing defrosting methods for cold storage rely on manual operation, which is time-consuming, labor-intensive, inefficient, and poses safety risks. Furthermore, the frost layer affects the energy efficiency of the refrigeration system and the lifespan of the equipment.
A small-scale defrosting device for cold storage was designed. It uses a motor-driven threaded rod and an electric slide rail system to drive the cleaning brush. Combined with a heating rod and a fan system, it achieves automated defrosting. The brush cleans the frost layer and the heating rod melts the frost layer. The pump body discharges water and the nozzle sprays hot air to treat dead corners.
Mechanized defrosting has been achieved, which has improved work efficiency, enhanced the flexibility and coverage of defrosting, reduced manual operation, reduced safety risks, and improved the energy efficiency of the refrigeration system and the lifespan of the equipment.
Smart Images

Figure CN223939736U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of defrosting equipment technology, specifically a defrosting device for small cold storage. Background Technology
[0002] With societal progress and rising living standards, the demands for food and medicine safety and freshness are increasing. This trend has led to a significant increase in the demand for cold storage, as cold storage provides a stable low-temperature environment that helps extend the shelf life of food and medicine. However, the long-term operation of cold storage inevitably leads to a common problem—frost buildup on the walls and refrigeration equipment. Maintaining a sub-freezing temperature inside the cold storage makes it easy for moisture in the air to sublimate upon contact with the walls and equipment, forming a thick layer of frost. This frost not only affects the usable space of the cold storage but, more importantly, significantly reduces the energy efficiency of the refrigeration system. Frost increases the burden on the refrigeration system, leading to increased energy consumption and shortening the lifespan of the refrigeration equipment. Therefore, regular defrosting of cold storage becomes an essential maintenance task.
[0003] However, most common defrosting methods on the market currently rely on manual operation. Workers need to use handheld defrosting tools, such as scrapers or hot air blowers, to remove frost from the cold storage area one by one. This defrosting method is not only time-consuming and labor-intensive, but also inefficient because the frost layer is often very stubborn. In addition, manual defrosting also poses certain safety risks, as working in a low-temperature environment for a long time may have adverse effects on the health of workers. Utility Model Content
[0004] The purpose of this invention is to provide a defrosting device for small cold storage facilities to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a defrosting device for a small cold storage, comprising a cold storage wall, wherein a fixing groove and an installation groove are provided on the inner wall of the cold storage wall, a threaded rod is rotatably installed inside the installation groove, a motor A is installed inside the fixing groove, the output end of the motor A passes through the fixing groove and is connected to the left end of the threaded rod, a movable block is threadedly connected to the outer surface of the threaded rod, a movable frame is installed on the outer surface of the movable block, a connecting frame is installed on the bottom surface of the movable frame, an electric slide rail is installed on the inner bottom wall of the connecting frame and the inner top wall of the movable frame, a movable frame is slidably installed on the outer surfaces of the two electric slide rails, a partition is installed inside the movable frame, a motor C is installed on the upper surface of the partition, and a rotating rod is installed at the output end of the motor C after passing through the partition.
[0006] The bottom end of the rotating rod is rotatably mounted on the inner bottom wall of the movable frame, and multiple cleaning brushes are installed on the outer surface of the rotating rod.
[0007] The connecting frame has an internal cavity, and multiple heating rods are installed inside the cavity. A fan is installed on the upper surface of the cavity, and the output end of the fan is connected to the outer surface of the connecting frame.
[0008] The inner wall of the connecting frame is equipped with multiple air outlet blocks, and the outer surface of the cavity is connected to the outer surface of the multiple air outlet blocks through a pipe passing through the connecting frame.
[0009] The outer surface of the connecting frame is equipped with a pump body, the output end of the pump body is connected to an output hose, and the input end of the pump body is connected to the outer surface of the connecting frame.
[0010] The mobile frame has two fixed blocks installed on its outer surface. Each fixed block has a motor B installed on its upper surface, and the output end of each motor B passes through the fixed block and is fitted with a baffle.
[0011] Each of the baffles is equipped with a nozzle on its outer surface, and the outer surface of the cavity is connected to the outer surface of multiple nozzles via a pipe that passes through the connecting frame and the two baffles in sequence.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention achieves mechanical defrosting by rotating the cleaning brush via motor C, reducing manual operation steps and improving work efficiency. The distance between the moving frame and the cleaning brush and the cold storage wall is adjusted by an electric slide rail, allowing for flexible adjustment of the cleaning position according to the thickness of the frost layer, thus improving defrosting flexibility. The screw rod driven by motor A rotates, enabling the cleaning brush to move along the outer surface of the cold storage wall, thus expanding the cleaning range and improving defrosting efficiency. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of a defrosting device for a small cold storage according to the present invention;
[0015] Figure 2 This is a side view of a defrosting device for a small cold storage according to the present invention;
[0016] Figure 3 This is a schematic diagram of the internal structure of a defrosting device for a small cold storage according to the present invention;
[0017] Figure 4 This utility model relates to a defrosting device for small cold storage. Figure 3 Enlarged schematic diagram of the structure at point A in the middle;
[0018] Figure 5 This is a schematic diagram of the internal structure of the connecting frame in a defrosting device for a small cold storage according to this utility model.
[0019] In the picture:
[0020] 1. Cold storage wall; 2. Mounting groove; 3. Fixing groove; 4. Motor A; 5. Threaded rod; 6. Moving frame; 7. Fixing block; 8. Motor B; 9. Baffle; 10. Nozzle; 11. Connecting frame; 12. Pump body; 13. Output hose; 14. Fan; 15. Cavity; 16. Heating rod; 17. Air outlet block; 18. Electric slide rail; 19. Moving frame; 20. Rotating rod; 21. Cleaning brush; 22. Motor C; 23. Partition; 24. Moving block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-5 This utility model provides a technical solution: a defrosting device for a small cold storage, including a cold storage wall 1. The inner wall of the cold storage wall 1 is provided with a fixing groove 3 and an installation groove 2. A threaded rod 5 is rotatably installed inside the installation groove 2. A motor A4 is installed inside the fixing groove 3. The output end of the motor A4 passes through the fixing groove 3 and is connected to the left end of the threaded rod 5. A movable block 24 is threadedly connected to the outer surface of the threaded rod 5. A movable frame 6 is installed on the outer surface of the movable block 24. A connecting frame 11 is installed on the bottom surface of the movable frame 6. Electric slide rails 18 are installed on the inner bottom wall of the connecting frame 11 and the inner top wall of the movable frame 6. A movable frame 19 is slidably installed on the outer surface of the two electric slide rails 18. A partition 23 is installed inside the movable frame 19. A motor C22 is installed on the upper surface of the partition 23. A rotating rod 20 is installed at the output end of the motor C22 after passing through the partition 23.
[0023] The bottom end of the rotating rod 20 is rotatably mounted on the inner bottom wall of the movable frame 19, and multiple cleaning brushes 21 are mounted on the outer surface of the rotating rod 20.
[0024] The connecting frame 11 has a cavity 15 inside, and multiple heating rods 16 are installed inside the cavity 15. A fan 14 is installed on the upper surface of the cavity 15, and the output end of the fan 14 is connected to the outer surface of the connecting frame 11.
[0025] The inner wall of the connecting frame 11 is equipped with multiple air outlet blocks 17. The outer surface of the cavity 15 is connected to the outer surface of the multiple air outlet blocks 17 through the connecting frame 11 via a pipe. Air is delivered into the cavity 15 by the fan 14 and heated into a hot airflow by the heating rod 16. The hot airflow is then used to heat and melt the frost layer inside the connecting frame 11 through the air outlet blocks 17, which facilitates subsequent cleaning.
[0026] The outer surface of the connecting frame 11 is equipped with a pump body 12. The output end of the pump body 12 is connected to an output hose 13. The input end of the pump body 12 is connected to the outer surface of the connecting frame 11. The pump body 12 draws out the melted water and discharges it through the output hose 13, which prevents the water from freezing again inside the cold storage and helps to improve cleaning efficiency.
[0027] Among them, two fixing blocks 7 are installed on the outer surface of the mobile frame 6. A motor B8 is installed on the upper surface of each fixing block 7. A baffle 9 is installed after the output end of each motor B8 passes through the fixing block 7.
[0028] Each baffle 9 has a nozzle 10 installed on its outer surface. The outer surface of the cavity 15 is connected to the outer surface of multiple nozzles 10 by a pipe that passes through the connecting frame 11 and the two baffles 9 in sequence. The nozzles 10 can spray hot air to the dead corners that the cleaning brush 21 cannot clean, so that the frost layer in the dead corners can be melted and prevented from accumulating on the surface of the cold storage wall 1, which helps to improve the subsequent freezing efficiency.
[0029] Working principle: When frost forms on the surface of the cold storage wall 1, the controller starts motor C22 to rotate the cleaning brush 21, preparing to clean the frost area. The electric slide rail 18 drives the moving frame 19 and the rotating cleaning brush 21 to clean the frost on the surface of the cold storage wall 1. Simultaneously, motor B8 starts to rotate the baffle 9, making its surface contact the surface of the cold storage wall 1 to prevent the cleaned frost from splashing out. The cleaned frost falls into the connecting frame 11. Then, the heating rod 16 is activated. The system uses a fan 14 to deliver air into the cavity 15, which is then heated by the heating rod 16 into a hot airflow. This hot airflow melts the frost inside the connecting frame 11 through the air outlet block 17. The pump body 12 is activated to extract the melted water and discharge it through the output hose 13. At the same time, the heated hot airflow is delivered to the nozzle 10 through the hose, which sprays hot air into the dead corners that the cleaning brush 21 cannot reach, causing the frost to melt and drip down, thus preventing it from accumulating on the surface of the cold storage wall 1 and affecting the subsequent cooling effect. This effectively cleans the frost inside the cold storage.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A defrosting device for a small cold storage facility, comprising a cold storage wall (1), characterized in that: The inner wall of the cold storage wall (1) is provided with a fixing groove (3) and an installation groove (2). A threaded rod (5) is rotatably installed inside the installation groove (2). A motor A (4) is installed inside the fixing groove (3). The output end of the motor A (4) passes through the fixing groove (3) and is connected to the left end of the threaded rod (5). A moving block (24) is threadedly connected to the outer surface of the threaded rod (5). A moving frame (6) is installed on the outer surface of the moving block (24). A connecting frame (11) is installed on the bottom surface of the 6). Electric slide rails (18) are installed on the inner bottom wall of the connecting frame (11) and the inner top wall of the movable frame (6). A movable frame (19) is slidably installed on the outer surface of the two electric slide rails (18). A partition (23) is installed inside the movable frame (19). A motor C (22) is installed on the upper surface of the partition (23). A rotating rod (20) is installed after the output end of the motor C (22) passes through the partition (23).
2. The defrosting equipment for a small cold storage facility according to claim 1, characterized in that: The bottom end of the rotating rod (20) is rotatably mounted on the inner bottom wall of the movable frame (19), and a plurality of cleaning brushes (21) are mounted on the outer surface of the rotating rod (20).
3. The defrosting device for a small cold storage facility according to claim 1, characterized in that: The connecting frame (11) has a cavity (15) inside, and multiple heating rods (16) are installed inside the cavity (15). A fan (14) is installed on the upper surface of the cavity (15), and the output end of the fan (14) is connected to the outer surface of the connecting frame (11).
4. A defrosting device for a small cold storage facility according to claim 3, characterized in that: The inner wall of the connecting frame (11) is equipped with a plurality of air outlet blocks (17), and the outer surface of the cavity (15) is connected to the outer surface of the plurality of air outlet blocks (17) after passing through the connecting frame (11) via a pipe.
5. A defrosting device for a small cold storage facility according to claim 4, characterized in that: The outer surface of the connecting frame (11) is equipped with a pump body (12), the output end of the pump body (12) is connected to an output hose (13), and the input end of the pump body (12) is connected to the outer surface of the connecting frame (11).
6. A defrosting device for a small cold storage facility according to claim 5, characterized in that: Two fixing blocks (7) are installed on the outer surface of the movable frame (6). A motor B (8) is installed on the upper surface of each fixing block (7). A baffle (9) is installed at the output end of each motor B (8) after passing through the fixing block (7).
7. A defrosting device for a small cold storage facility according to claim 6, characterized in that: Each of the baffles (9) has a nozzle (10) installed on its outer surface. The outer surface of the cavity (15) is connected to the outer surface of the multiple nozzles (10) after passing through the connecting frame (11) and the two baffles (9) in sequence via a pipe.