An electric defrosting air cooler with de-icing function

Abstract

This utility model discloses an electric defrosting air cooler with de-icing function, relating to the field of electric defrosting air coolers. The utility model includes a main body of the air cooler, a fan mounting ring, a fin assembly, and a heating element disposed within the main body. A refrigerant tube, made of stainless steel, is inserted into the fin assembly with a hole spacing of 38.1 mm and a row spacing of 33 mm. The liquid inlet end of the refrigerant tube is connected to a capillary distributor, and the liquid outlet end is connected to a return gas pipe. This utility model optimizes the uniformity of refrigerant distribution through a multi-path arrangement of four inlets / four outlets and three inlets / three outlets. With four inlets / four outlets, the total pipe length of 58.8 m covers a larger heat dissipation area, increasing the cooling capacity to 7 kW, suitable for high-load scenarios. With three inlets / three outlets, the pipe length is shortened to 44.1 m, reducing flow resistance and adapting the cooling capacity to small and medium-sized needs. The precise diversion by the capillary distributor solves the problem of uneven refrigerant distribution caused by traditional single-path liquid inlet, avoiding localized frost formation or incomplete evaporation, and improving overall heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric defrosting air coolers, specifically an electric defrosting air cooler with de-icing function. Background Technology

[0002] When existing evaporative air coolers operate under low temperature and high humidity conditions, frost easily forms on the fin surface, leading to decreased heat exchange efficiency, increased energy consumption, and even equipment failure due to excessive frost layer. In traditional technologies, refrigerant pipelines often adopt a single-inlet-single-outlet or simple multi-branch structure, which results in uneven refrigerant distribution and affects the overall heat exchange performance of the evaporator. Defrosting solutions often rely on single electric heating or hot gas defrosting, which has the drawbacks of high energy consumption and incomplete defrosting. In addition, the condensate drainage system lacks antifreeze design, which can easily cause water backflow or equipment corrosion due to ice blockage of the drain outlet. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide an electric defrosting air cooler with a defrosting function, so as to solve the technical problem of uneven refrigerant distribution in traditional technologies where refrigerant pipelines mostly adopt a single-inlet-single-outlet or simple multi-branch structure.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric defrosting air cooler with de-icing function, comprising an air cooler body, a fan mounting ring, a fin assembly, and a heating element disposed within the air cooler body;

[0005] The fin assembly is fitted with a cooling tube, which is made of φ15.88mm stainless steel with a hole spacing of 38.1mm and a row spacing of 33mm.

[0006] The liquid inlet of the refrigeration tube is connected to a capillary separator, and the liquid outlet is connected to a return gas pipe.

[0007] The number of capillary tubes in the distributor is matched with the number of liquid inlet branches of the refrigeration tube, forming a four-in-four-out or three-in-three-out arrangement path.

[0008] The total pipe length corresponding to the four-inlet, four-outlet arrangement is 58.8m, and the cooling capacity is 7kW.

[0009] The total pipe length corresponding to the three-inlet, three-outlet arrangement is 44.1m, and the cooling capacity is 5.3kW.

[0010] By adopting the above technical solutions, the uniformity of refrigerant distribution is optimized. Specifically, when using a four-inlet, four-outlet configuration, the total pipe length of 58.8m can cover a larger heat dissipation area, and the cooling capacity reaches 7kW, which is suitable for high-load scenarios. When using a three-inlet, three-outlet configuration, the pipe length of 44.1m reduces flow resistance, and the cooling capacity of 5.3kW is more suitable for small and medium-sized applications. This multi-path design, through the precise diversion of the capillary distributor, avoids the problems of local frost or incomplete evaporation caused by traditional single-path liquid inlet, thereby improving the overall heat exchange efficiency.

[0011] Furthermore, the fin assembly uses stainless steel foil with a fin spacing of 6mm, and defrosting holes and circulation holes are opened on the surface of the fins, with the defrosting holes and circulation holes distributed at intervals.

[0012] By adopting the above technical solution, compared with traditional aluminum fins, it has stronger corrosion resistance, and is especially suitable for high humidity and corrosive environments such as seafood processing and chemical workshops, extending its service life. The dense arrangement of fins with a spacing of 6mm can increase the heat exchange area in a limited space. With the setting of defrosting holes and circulation holes distributed at intervals, it not only promotes the uniform diffusion of defrosting heat, but also guides the airflow to form turbulence through the circulation holes, thereby improving the heat exchange efficiency.

[0013] Furthermore, the bottom of the main body of the air cooler is provided with a water nozzle, the drain outlet of which adopts a φ32mm pipe diameter, and the water nozzle is embedded with an antifreeze heating wire.

[0014] By adopting the above technical solution, the drain nozzle uses a large-diameter φ32mm drain outlet, which can quickly drain the condensate produced during defrosting, avoiding backflow of water or corrosion of the casing caused by poor drainage. The embedded antifreeze heating wire is intelligently started and stopped by the temperature control module. When the drain outlet temperature is detected to be lower than the set temperature, it will automatically heat up, completely solving the pain point of traditional air coolers where the drain outlet freezes and gets blocked in low-temperature environments, and reducing maintenance costs.

[0015] Furthermore, the heating element includes a finned defrosting heating element and a water tray defrosting heating element, with power of 2.9kW and 1kW respectively, and both are controlled to start and stop by an independent temperature control module in the electrical box.

[0016] By adopting the above technical solution, the independent temperature control module of the electrical box achieves precise temperature zone management, the fin defrosting heating tube is directly embedded in the defrosting hole of the fin assembly, and quickly melts the ice layer on the fin surface by radiation heating to improve defrosting efficiency, while the water tray heating tube heats the drainage path to prevent secondary freezing.

[0017] Furthermore, the bottom of the air cooler body is supported and fixed by a bracket, and the bracket and the air cooler body are detachably connected by bolts.

[0018] By adopting the above technical solution, the bracket and the housing are connected by bolts, allowing users to flexibly adjust the support height and angle according to the installation environment, improving adaptability and making it suitable for various scenarios such as roof hoisting and corner embedding.

[0019] Furthermore, the fan inside the fan mounting ring is driven by dual ø400mm motors, with a total air volume of 6500m³ / h, a motor power of 2×200W, and a power supply system of 380V / 50Hz.

[0020] By adopting the above technical solution, the system reliability is improved through the dual-motor redundancy configuration, and the optimized solution with 2×200W motor power is more energy-efficient than the traditional single high-power motor.

[0021] Furthermore, the main inlet pipe of the capillary separator has a diameter of φ16mm, and branches out into four or three φ5mm capillary tubes, forming a multi-parallel structure with the refrigeration pipe.

[0022] By adopting the above technical solutions, dynamic balance of refrigerant flow is achieved through a multi-parallel structure. When using a four-branch system, the pressure loss of each capillary tube is reduced compared to the traditional single-branch system, ensuring the uniformity of liquid supply to each refrigerant pipe branch and avoiding local overcooling or overheating. The three-branch system adapts to the requirements of medium and low temperature operating conditions by increasing the flow rate of a single branch.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. This utility model optimizes the uniformity of refrigerant distribution through a multi-path arrangement of four-in-four-out and three-in-three-out. With four-in-four-out, the total pipe length of 58.8m covers a larger heat dissipation area, increasing the cooling capacity to 7kW, which is suitable for high-load scenarios. With three-in-three-out, the pipe length is shortened to 44.1m, reducing flow resistance and adapting the cooling capacity to small and medium-sized needs. The precise diversion of the capillary liquid distributor solves the problem of uneven refrigerant distribution caused by traditional single-path liquid inlet, avoids local frost or incomplete evaporation, and improves the overall heat exchange efficiency.

[0025] 2. This utility model uses a heating element, specifically a finned defrosting heating element, which is directly embedded in the defrosting hole of the fin assembly. Through radiant heating, it quickly melts the ice layer on the fin surface, solving the problem of reduced heat exchange efficiency caused by frost accumulation in traditional air coolers and improving defrosting efficiency. At the same time, the defrosting heating element in the water tray is built into the drain nozzle, which continuously heats the drain outlet to prevent it from freezing and clogging. Its independent temperature control module ensures smooth drainage of condensate based on temperature sensor feedback, eliminating the risk of backflow. Both are controlled in a time-sharing manner through an electrical box. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0027] Figure 2 This is a schematic diagram showing the position and structure of the water nozzle of this utility model;

[0028] Figure 3 This is a schematic diagram of the four-inlet and four-outlet refrigeration pipe arrangement structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the four-inlet and four-outlet heating tube arrangement structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the three-inlet and three-outlet refrigeration pipe arrangement structure of this utility model;

[0031] Figure 6 This is a schematic diagram of the three-inlet and three-outlet heating tube arrangement structure of this utility model;

[0032] Figure 7 This is a three-view structural diagram of the tripod of this utility model.

[0033] In the diagram: 1. Main body of the air cooler; 2. Fan mounting ring; 3. Electrical box; 4. Drain nozzle; 5. Stand; 6. Fin assembly; 7. Refrigeration pipe; 8. Heating element; 9. Dispenser. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In this embodiment:

[0036] An electric defrosting air cooler with de-icing function, such as Figure 1-7 As shown, it includes a main body 1 of the air cooler, a fan mounting ring 2, a fin assembly 6 and a heating element 8 disposed inside the main body 1 of the air cooler;

[0037] A cooling pipe 7 is installed inside the fin assembly 6. The cooling pipe 7 is made of φ15.88mm stainless steel pipe with a hole spacing of 38.1mm and a row spacing of 33mm.

[0038] The liquid inlet of the refrigeration pipe 7 is connected to the capillary separator 9, and the liquid outlet is connected to the return gas pipe.

[0039] The number of capillary tubes in the distributor 9 matches the number of liquid inlet branches in the refrigeration tube 7, forming a four-in-four-out or three-in-three-out arrangement path.

[0040] The total pipe length corresponding to the four-inlet, four-outlet layout is 58.8m, and the cooling capacity is 7kW.

[0041] The total pipe length corresponding to the three-inlet, three-outlet configuration is 44.1m, and the cooling capacity is 5.3kW.

[0042] The uniformity of refrigerant distribution has been optimized. Specifically, when using a four-inlet, four-outlet configuration, the total pipe length of 58.8m can cover a larger heat dissipation area, achieving a cooling capacity of 7kW, suitable for high-load scenarios. With a three-inlet, three-outlet configuration, the pipe length of 44.1m reduces flow resistance, and the cooling capacity of 5.3kW is more suitable for small and medium-sized applications. This multi-path design, through the precise diversion of the capillary distributor 9, avoids the problems of localized frosting or incomplete evaporation caused by traditional single-path liquid inlet, thereby improving the overall heat exchange efficiency. At the same time, the refrigerant pipe 7 uses stainless steel pipes and is arranged in a matrix with a hole spacing of 38.1mm and a column spacing of 33mm. This ensures both the strength and corrosion resistance of the pipe wall and reduces airflow resistance by optimizing the spacing, maximizing the contact area between the fin assembly 6 and the airflow. In low-temperature and high-humidity environments, this can slow down the frosting rate and reduce the defrosting frequency.

[0043] See Figure 3 , Figure 4 , Figure 5 , Figure 6 The fin assembly 6 uses stainless steel foil with a fin spacing of 6mm. Defrosting holes and circulation holes are opened on the fin surface, and the defrosting holes and circulation holes are distributed alternately. Compared with traditional aluminum fins, it has stronger corrosion resistance and is especially suitable for high-humidity and corrosive environments such as seafood processing and chemical workshops, extending its service life. The dense arrangement with a fin spacing of 6mm can increase the heat exchange area in a limited space. With the alternating distribution of defrosting holes and circulation holes, it not only promotes the uniform diffusion of defrosting heat, but also guides the airflow to form turbulence through the circulation holes, improving heat exchange efficiency. At the same time, the synergistic effect of defrosting holes and circulation holes can accelerate the drainage speed after the ice layer melts, avoid the secondary freezing of residual water film, and improve the dryness of the fin surface after defrosting, significantly reducing the problem of airflow reduction caused by ice accumulation.

[0044] See Figure 1 , Figure 2 , Figure 3 , Figure 5 The air cooler body 1 has a drain nozzle 4 at the bottom. The drain outlet of the drain nozzle 4 has a diameter of φ32mm and an embedded antifreeze heating wire. The large diameter drain outlet of the drain nozzle 4 can quickly drain the condensate produced by defrosting, avoiding backflow of water or corrosion of the cabinet caused by poor drainage. The embedded antifreeze heating wire is intelligently started and stopped by the temperature control module. When the temperature of the drain outlet is detected to be lower than the set temperature, it will automatically heat up, completely solving the pain point of the drain outlet freezing and clogging in the low temperature environment of traditional air coolers, reducing maintenance costs. At the same time, the drain nozzle 4 is linked with the defrosting heating tube of the fin assembly 6 to ensure that the defrosting water is heated and guided out immediately after it is generated, avoiding water stagnation and freezing. This ensures that the drainage function can still be maintained normally in extreme environments, meeting the needs of harsh scenarios such as cold chain logistics and cold storage.

[0045] See Figure 3 , Figure 4 , Figure 5 , Figure 6 The heating element 8 includes a finned defrosting heating element and a drip tray defrosting heating element, with power outputs of 2.9kW and 1kW respectively. Both are controlled by an independent temperature control module within the electrical box 3. The independent temperature control module in the electrical box 3 enables precise temperature zone management. The finned defrosting heating element is directly embedded in the defrosting holes of the fin group 6, using radiant heating to quickly melt the ice layer on the fin surface and improve defrosting efficiency. The drip tray heating element heats the drainage path to prevent secondary icing. At the same time, the independent temperature control module can intelligently adjust the heating power according to the frost thickness. For example, only the drip tray heating is activated when there is light frost, and the full power is used when there is heavy frost.

[0046] See Figure 1 , Figure 2 , Figure 5 The main body 1 of the air cooler is supported and fixed at the bottom by the legs 5. The legs 5 are detachably connected to the main body 1 of the air cooler by bolts. The legs 5 are also bolted to the housing. Users can flexibly adjust the support height and angle according to the installation environment to improve adaptability. It is suitable for various scenarios such as roof hoisting and wall corner embedding. At the same time, the detachable structure facilitates transportation and later maintenance. For example, the legs 5 can be replaced without damaging the main structure during cold storage renovation, shortening the construction cycle. The galvanized treatment on the surface of the legs 5 further enhances the resistance to moisture and corrosion, reducing the total life cycle cost.

[0047] See Figure 1 , Figure 2 The fan inside fan mounting ring 2 is driven by two ø400mm motors with a total air volume of 6500m³ / h and a motor power of 2×200W. The power supply system is 380V / 50Hz. The dual-motor redundancy configuration improves system reliability. The optimized 2×200W motor power scheme is more energy-efficient than the traditional single high-power motor, and the 380V / 50Hz power supply system is compatible with industrial power grid standards, avoiding the risk of downtime caused by voltage fluctuations.

[0048] See Figure 3 , Figure 5 The capillary distributor 9 has a φ16mm diameter main inlet pipe, branching into four or three φ5mm capillary tubes, forming a multi-parallel structure with the refrigerant pipe 7. This multi-parallel structure achieves dynamic balance of refrigerant flow. When using four branches, the pressure loss of each capillary tube is reduced compared to the traditional single-path design, ensuring uniform liquid supply to each branch of the refrigerant pipe 7 and avoiding local overcooling or overheating. The three-branch design increases the flow rate of a single branch to meet the needs of medium and low temperature operating conditions. At the same time, the threaded connection structure between the capillary tube and the refrigerant pipe 7 supports quick disassembly and assembly, making it easy to adjust the number of branches according to operating conditions and improving adaptability.

[0049] The implementation principle of this embodiment is as follows: The air cooler has the main body 1 as the core frame, which integrates a fan mounting ring 2, fin assembly 6, refrigerant pipe 7 and heating element 8. The refrigerant pipe 7 is made of φ15.88mm stainless steel pipe and is arranged in a matrix with a hole spacing of 38.1mm and a column spacing of 33mm. The refrigerant is evenly distributed through a capillary liquid distribution path with four inlet and four outlet or three inlet and three outlet. When four inlet and four outlet, the total pipe length is 58.8m and the cooling capacity is 7kW. When three inlet and three outlet, the pipe length is 44.1m and the cooling capacity is 5.3kW. Defrosting holes and circulation holes are opened on the surface of the stainless steel foil of the fin assembly 6. Combined with the fan driven by dual ø400mm motors, a fan volume of 6500m³ / h is formed to accelerate heat exchange.

[0050] The heating element 8 is divided into a finned defrosting heating element of 2.9kW and a water tray defrosting heating element of 1kW. The former is embedded in the fin group 6 to melt the ice layer, while the latter is placed in the drain nozzle 4 to prevent the drain from freezing. The defrosting process is automatically started and stopped by the temperature control module of the electrical box 3, and the drainage is ensured to be smooth through the φ32mm drain outlet of the drain nozzle 4 and the built-in antifreeze heating wire. The bottom of the air cooler body 1 is fixed and supported by the detachable bracket 5 to adapt to different installation environments.

[0051] During refrigeration, the refrigerant is diverted to the refrigeration tube 7 via the capillary distributor 9 to absorb heat, and the cooling capacity is transferred to the environment by the fin assembly 6. During defrosting, the heating tube 8 heats the fins and the water nozzle 4, and the ice layer is melted and discharged through the drain outlet. Through the multi-path refrigeration tube arrangement, the combined effect of electric defrosting and antifreeze drainage, efficient refrigeration and automatic de-icing are achieved in low temperature and high humidity environments.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An electric defrosting cold air blower with ice removing function, characterized in that: It includes the main body of the air cooler (1), the fan mounting ring (2), the fin assembly (6) and the heating element (8) disposed in the main body of the air cooler (1); The fin assembly (6) is provided with a cooling tube (7), which is made of φ15.88mm stainless steel tube with a hole spacing of 38.1mm and a row spacing of 33mm. The liquid inlet end of the refrigeration tube (7) is connected to the capillary separator (9), and the liquid outlet end is connected to the return gas tube. The number of capillaries in the distributor (9) matches the number of liquid inlet branches in the refrigeration tube (7), forming a four-in-four-out or three-in-three-out arrangement path. The total pipe length corresponding to the four-inlet, four-outlet arrangement is 58.8m, and the cooling capacity is 7kW. The total pipe length corresponding to the three-inlet, three-outlet arrangement is 44.1m, and the cooling capacity is 5.3kW.

2. The electric defrosting cold air blower with ice removing function according to claim 1, characterized in that: The fin assembly (6) uses stainless steel foil with a fin spacing of 6mm. Defrosting holes and circulation holes are opened on the fin surface, and the defrosting holes and circulation holes are distributed alternately.

3. The electric defrosting cold air blower with ice removing function according to claim 1, characterized in that: The bottom of the main body (1) of the air cooler is provided with a water nozzle (4), the drain outlet of the water nozzle (4) adopts a φ32mm pipe diameter, and the water nozzle (4) is embedded with an antifreeze heating wire.

4. The electric defrosting cold air blower with ice removing function according to claim 1, characterized in that: The heating element (8) includes a finned defrosting heating element and a water tray defrosting heating element, with power of 2.9kW and 1kW respectively. The two are controlled to start and stop by an independent temperature control module in the electrical box (3).

5. The electric defrosting cold air blower with ice removing function according to claim 1, characterized in that: The bottom of the air cooler body (1) is supported and fixed by a bracket (5), and the bracket (5) is detachably connected to the air cooler body (1) by bolts.

6. The defrosting air cooler with de-icing function according to claim 1, characterized in that: The fan inside the fan mounting ring (2) is driven by two ø400mm motors with a total air volume of 6500m³ / h, a motor power of 2×200W, and a power supply system of 380V / 50Hz.

7. The defrosting air cooler with de-icing function according to claim 1, characterized in that: The liquid inlet main of the capillary separator (9) has a diameter of φ16mm and branches out into four or three φ5mm capillary tubes, forming a multi-parallel structure with the refrigeration tube (7).

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