Refrigeration equipment for cold stores

Abstract

This utility model discloses a refrigeration device for a cold storage, including an outdoor unit and an indoor unit. The indoor unit includes an evaporator and a refrigeration fan. A groove is formed at the bottom of the indoor unit, and one side of the groove is inclined. An air inlet is formed on the inclined surface. The refrigeration fan is installed on the air inlet. The evaporator is fixed to the bottom surface of the indoor unit and located to one side of the refrigeration fan. An air outlet is formed on the bottom surface of the indoor unit and located to one side of the evaporator. An inner water tank is formed on the bottom surface of the indoor unit, and the air outlet is located outside the inner water tank. The evaporator is located inside the inner water tank. This utility model increases the air intake by using an inclined air inlet, allowing for sufficient exchange between the absorbed hot air and the evaporator. By having both the air inlet and outlet located on the bottom surface of the outdoor unit, the air in the cold storage circulates within the indoor unit. Combined with an eight-channel evaporator, the temperature difference between the intake air temperature and the cooling temperature is minimized, improving refrigeration efficiency and reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically refrigeration equipment for cold storage. Background Technology

[0002] Refrigeration in cold storage is accomplished by refrigeration units, which generally include evaporators, compressors, condensers, liquid receivers, expansion valves, exhaust fans, and other components. These components are connected by pipes and regulating valves to form a refrigeration cycle system that maintains the temperature inside the cold storage at a certain level.

[0003] Refrigeration units are generally divided into wall-mounted and ceiling-mounted types. Existing refrigeration equipment achieves cooling by drawing in hot outside air into the indoor unit and cooling the air. The large temperature difference between the outside air and the refrigeration unit results in significant heat exchange, and excessively high outside air temperatures can even negatively impact cooling efficiency. This also significantly increases equipment power consumption and energy consumption. Therefore, to reduce energy consumption, the refrigeration equipment for this cold storage facility was designed accordingly. Utility Model Content

[0004] The purpose of this invention is to provide refrigeration equipment for cold storage. By using an inclined air inlet, the air intake volume is increased, allowing for full exchange between the absorbed hot air and the evaporator. Both the air inlet and outlet are located on the bottom surface of the outdoor unit, enabling the air inside the cold storage to circulate within the indoor unit. At the same time, the eight-channel evaporator minimizes the temperature difference between the intake air temperature and the cooling temperature, reducing frost formation, improving refrigeration efficiency, and reducing energy consumption.

[0005] This utility model provides the following technical solution: a refrigeration device for a cold storage, including an outdoor unit and an indoor unit. The indoor unit includes an evaporator and a refrigeration fan. A groove is provided at the bottom of the indoor unit, and one side of the groove is a slope. An air inlet is provided on the slope. The refrigeration fan is installed on the air inlet. The evaporator is fixed on the bottom surface of the indoor unit and located on one side of the refrigeration fan. An air outlet is provided on the bottom surface of the indoor unit and located on one side of the evaporator. An inner water tank is formed on the bottom surface of the indoor unit, and the air outlet is located on the outside of the inner water tank. The evaporator is located inside the inner water tank.

[0006] In order to drain the defrosting water inside the refrigeration equipment, the outdoor unit is connected to the end face of the indoor unit. An external water tank is installed on the inner wall of the outdoor unit. A water guide pipe is connected to the inner wall of the outdoor unit. The other end of the water guide pipe is connected to the side wall of the indoor unit, and the water guide pipe connects the indoor unit and the external water tank. A drain pipe is connected to the surface of the outdoor unit and is connected to the external water tank.

[0007] To prevent the compressor and liquid storage tank from coming into contact with defrosting water, a mounting bracket is fixed to the inner wall of the outdoor unit. The mounting bracket is located above the external water tank, and the compressor and liquid storage tank are mounted on the mounting bracket.

[0008] To dissipate heat from the outdoor unit, a cooling fan is installed on one side wall of the outdoor unit, and a condenser is installed on one side of the cooling fan. A connecting plate is fixed on the side wall of the outdoor unit, and insert plates are formed on both the connecting plate and the other side wall. The condenser is inserted into the insert plates and is installed on one side of the external water tank and the mounting bracket.

[0009] To achieve a cooling effect, the evaporator, compressor, and condenser are connected by pipes to form a coolant circuit, and an expansion valve is connected between the evaporator and the condenser.

[0010] In order to heat the evaporator for defrosting, a bypass pipe is connected between the compressor and the evaporator, and a solenoid valve is connected to the bypass pipe.

[0011] A control box is installed between the connecting plate and the other side wall.

[0012] To guide the air intake and exhaust, the lower end of the indoor unit is connected to guide louvers, which include air intake louvers and air exhaust louvers. The air intake louvers are located at the lower end of the air intake, and the air exhaust louvers are located at the lower end of the air exhaust.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] (1) By installing an internal water tank at the bottom of the outdoor unit, the air outlet and the evaporator are separated, so as to prevent the water formed by defrosting the evaporator from flowing out of the air outlet after defrosting.

[0015] (2) An inclined air inlet is opened at the bottom of the outdoor unit, and the air outlet is also opened on the bottom surface of the outdoor unit to refrigerate the air in the cold storage. Compared with the existing refrigeration unit, the air intake is changed from the outside air to the internal air of the cold storage, which reduces the temperature difference between the intake air temperature and the refrigeration temperature and reduces energy consumption.

[0016] (3) The inclined air inlet increases the air volume, and the air inlet and outlet are not on the same straight line, which avoids the direct blowing of cold air and makes the cold air more evenly distributed. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is an internal perspective view of the overall structure of this utility model;

[0020] Figure 3 This is a perspective view of the overall structure of this utility model from another angle;

[0021] Figure 4 This is a diagram of the internal structure of this utility model;

[0022] Figure 5 This is a cross-sectional view of the present invention;

[0023] Figure 6 This is a schematic diagram of the cooling circuit of this utility model;

[0024] In the diagram: 1. Indoor unit; 11. Air outlet; 12. Air inlet; 13. Water pipe; 14. Indoor unit cover; 15. Inner water tank; 2. Outdoor unit; 21. Mounting bracket; 22. Outer water tank; 23. Drain pipe; 24. Outdoor unit cover; 25. Lifting lug; 26. Connecting plate; 3. Evaporator; 4. Refrigeration fan; 41. Fan mounting plate; 5. Compressor; 6. Condenser; 7. Cooling fan; 8. Liquid receiver; 9. Control box; 10. Expansion valve; 20. Guide louver; 201. Air inlet louver; 202. Air outlet louver. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1 to 5This utility model provides a technical solution: a refrigeration device for a cold storage, including an outdoor unit 2 and an indoor unit 1. The refrigeration device is installed on the top surface of the cold storage. An indoor unit cover 14 is installed on the top surface of the indoor unit 1, and an outdoor unit cover 24 is installed on the outdoor unit 2. The upper end of the outdoor unit 2 is also formed with lifting lugs 25 for easy hoisting. The indoor unit 1 includes an evaporator 3 and a cooling fan 4. A groove is formed at the bottom of the indoor unit 1, and one side of the groove is a slope. An air inlet 12 is formed on the slope. The evaporator 3 is an eight-channel evaporator, which significantly increases the contact area between the inlet air temperature and the cooling temperature, reducing... To reduce frost buildup and improve cooling efficiency, a cooling fan 4 is installed on the air inlet 12. A fan mounting plate 41 is attached to the surface of the cooling fan 4, and a protective cover is installed on the fan mounting plate 41 to prevent foreign objects from affecting the normal operation of the cooling fan 4. The cooling fan 4 draws air from the cold storage into the indoor unit 1. The evaporator 3 is fixed to the bottom surface of the indoor unit 1 and located to one side of the cooling fan 4. The air is cooled by passing through the evaporator 3. An air outlet 11 is opened on the bottom surface of the indoor unit 1, located to one side of the evaporator 3. The cooled cold air enters the cold storage unit through the air outlet 11. Inside the cold storage unit, an inner water tank 15 is formed on the bottom surface of the indoor unit 1. An air outlet 11 is located on the outside of the inner water tank 15. The evaporator 3 is housed inside the inner water tank 15, separating the air outlet 11 from the evaporator 3. After the evaporator 3 has been running for a period of time, frost will form on its surface. To improve the cooling efficiency, defrosting is required, which produces water. This water is stored in the inner water tank 15. To prevent the defrosting water from flowing to the air outlet 11, the inner water tank 15 separates the evaporator 3 from the air outlet 11. The air outlet 11 is separated to prevent water droplets from falling from the air outlet 11. At the same time, the obliquely set air inlet 12 increases the air intake area of ​​the air inlet 12, further increasing the air volume of the air outlet 11. Moreover, the air outlet 11 and the air inlet 12 are on two different sides of the indoor unit 1. This structure can prevent cold air from blowing directly and make the cold air evenly distributed. The air inlet 12 draws the cold air inside the cold storage into the indoor unit 1. Compared with the existing refrigeration units that draw in outside air, it reduces the temperature difference between the air temperature and the cooling temperature, improves the cooling effect, and reduces energy consumption.

[0027] like Figure 2 and 5 As shown, the outdoor unit 2 is connected to the end face of the indoor unit 1 by screws. An external water tank 22 is installed on the inner wall of the outdoor unit 2 by screws. A water guide pipe 13 is welded to the inner wall of the outdoor unit 2. The water guide pipe 13 is located at the bottom of the external water tank 22. The other end of the water guide pipe 13 is connected to the side wall of the indoor unit 1, which is also located at the bottom of the indoor unit 1. The water guide pipe 13 connects the inner water tank 15 and the external water tank 22. A drain pipe 23 is connected to the surface of the outdoor unit 2. The drain pipe 23 is connected to the external water tank 22. Water in the inner water tank 15 is introduced into the external water tank 22 through the water guide pipe 13. The water in the external water tank 22 is discharged from the inside of the refrigeration equipment through the drain pipe 23.

[0028] like Figure 4 and 5 As shown, a mounting bracket 21 is fixed to the inner wall of the outdoor unit 2 by screws. The mounting bracket 21 is located above the external water tank 22. The compressor 5 and the liquid storage tank 8 are also mounted on the mounting bracket 21 by screws. The mounting bracket 21 is used to raise the installation height of the compressor 5 and the liquid storage tank 8 to avoid contact between the internal equipment and the water.

[0029] like Figure 3 and 4 As shown, a cooling fan 7 is also installed on one side wall of the outdoor unit 2. The cooling fan 7 is connected to the side wall of the outdoor unit 2 via a bracket. A condenser 6 is installed on one side of the cooling fan 7. A connecting plate 26 is fixed on the side wall of the indoor unit 1. Insert plates are formed on both the connecting plate 26 and the other side wall of the outdoor unit 2. The condenser 6 is inserted into the insert plate. The condenser 6 is installed on one side of the outdoor water tank 22 and the mounting bracket 21. The condenser 6 is a microchannel condenser, which enhances the heat exchange effect and dissipates heat from the equipment inside the outdoor unit 2.

[0030] like Figure 6 As shown, the evaporator 3, compressor 5, and condenser 6 are connected by pipes to form a coolant circuit. An expansion valve 10 is connected between the evaporator 3 and the condenser 6. Under the action of the compressor 5, the coolant becomes a high-pressure, high-temperature superheated gas. The high-temperature, high-pressure superheated gas enters the condenser 6. Through heat exchange, the high-pressure liquid refrigerant flows out of the condenser 6. The high-pressure liquid refrigerant passes through the expansion valve 10 and becomes a low-temperature, low-pressure liquid. The low-temperature, low-pressure liquid enters the evaporator 3, comes into contact with the air, and generates cold air. The cold air is sent into the cold storage to maintain the temperature of the cold storage. At the same time, the low-temperature, low-pressure liquid absorbs heat and becomes a low-temperature, low-pressure gas, which is then sent back into the compressor 5 for the next cycle.

[0031] A bypass pipe is connected between the compressor 5 and the evaporator 3. A solenoid valve is connected to the bypass pipe. When defrosting the evaporator 3, the bypass pipe is opened by the solenoid valve, and the valves on both sides of the evaporator 3 are closed at the same time. The high-temperature gas in the compressor 5 is introduced into the evaporator 3 to heat the frost on the surface of the evaporator 3. The liquid produced after defrosting will flow into the bottom of the indoor unit 1 and be introduced into the external water tank 22 of the outdoor unit 2 through the water pipe 13. At the same time, a part of the pipe connected to the outside of the compressor 5 is located in the external water tank 22. When the compressor 5 is working normally, high-temperature and high-pressure gas will be introduced into the pipe, and the temperature of the pipe will increase. Under the action of the high-temperature pipe, part of the water in the external water tank 22 will be evaporated, and the other part of the water will be discharged from the outdoor unit 2 through the drain pipe 23 to prevent the water from overflowing in the external water tank 22.

[0032] like Figure 4 As shown, a control box 9 is installed between the connecting plate 26 and the other side wall of the outdoor unit 2.

[0033] The lower end of the indoor unit 1 is connected to a guide louver 2, which includes an air inlet louver 201 and an air outlet louver 202. The air inlet louver 201 is located at the lower end of the air inlet 12, and the air outlet louver 202 is located at the lower end of the air outlet 11.

[0034] Defrosting working principle: The bypass pipe is controlled by a solenoid valve, while the valves on both sides of the evaporator are closed. High-temperature gas from the compressor is introduced into the evaporator to heat the frost on the evaporator surface. The liquid produced after defrosting flows into the bottom of the indoor unit and is guided into the outdoor unit's external water tank through a drain pipe. At the same time, a part of the pipe connected to the outside of the compressor is located in the external water tank. When the compressor is working normally, high-temperature and high-pressure gas is introduced into the pipe, which raises the temperature of the pipe. Under the action of the high-temperature pipe, part of the water in the external water tank will be evaporated, and the other part of the water will be discharged from the outdoor unit through the drain pipe to prevent water from overflowing from the external water tank.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. Refrigeration equipment for cold storage, including an outdoor unit and an indoor unit, characterized in that: The indoor unit includes an evaporator and a cooling fan. A groove is provided at the bottom of the indoor unit, and one side of the groove is inclined. An air inlet is provided on the inclined surface. The cooling fan is installed on the air inlet. The evaporator is fixed to the bottom surface of the indoor unit and located to one side of the cooling fan. An air outlet is provided on the bottom surface of the indoor unit and located to one side of the evaporator. An inner water tank is formed on the bottom surface of the indoor unit. The air outlet is located on the outside of the inner water tank. The evaporator is located inside the inner water tank.

2. The refrigeration equipment for cold storage according to claim 1, characterized in that: The outdoor unit is connected to the end face of the indoor unit. An external water tank is installed on the inner wall of the outdoor unit. A water guide pipe is connected to the inner wall of the outdoor unit. The other end of the water guide pipe is connected to the side wall of the indoor unit. The water guide pipe connects the indoor unit and the external water tank. A drain pipe is connected to the surface of the outdoor unit. The drain pipe is connected to the external water tank.

3. The refrigeration equipment for a cold storage facility according to claim 1, characterized in that: A mounting bracket is fixed on the inner wall of the outdoor unit. The mounting bracket is located above the external water tank, and a compressor and a liquid storage tank are mounted on the mounting bracket.

4. The refrigeration equipment for a cold storage facility according to claim 1, characterized in that: A cooling fan is installed on one side wall of the outdoor unit, and a condenser is installed on one side of the cooling fan. A connecting plate is fixed on the side wall of the outdoor unit, and insert plates are formed on both the connecting plate and the other side wall. The condenser is inserted into the insert plate and is installed on one side of the external water tank and the mounting bracket.

5. The refrigeration equipment for a cold storage facility according to claim 1, characterized in that: The evaporator, compressor, and condenser are connected by pipes to form a coolant circuit, and an expansion valve is connected between the evaporator and the condenser.

6. The refrigeration equipment for a cold storage facility according to claim 5, characterized in that: A bypass pipe is connected between the compressor and the evaporator, and a solenoid valve is connected to the bypass pipe.

7. The refrigeration equipment for a cold storage facility according to claim 4, characterized in that: A control box is installed between the connecting plate and the other side wall of the outdoor unit.

8. The refrigeration equipment for a cold storage facility according to claim 1, characterized in that: The lower end of the indoor unit is connected to guide louvers, which include air inlet louvers and air outlet louvers. The air inlet louvers are located at the lower end of the air inlet, and the air outlet louvers are located at the lower end of the air outlet.

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