An internal heating defrosting refrigeration evaporation system

Abstract

This utility model relates to the field of evaporator technology and discloses an internal heating defrosting refrigeration evaporation system. The evaporator is connected to a hot water tank, and an oil separator is provided in the conveying direction of the hot water tank. The oil separator is connected to a compressor, and the compressor is connected to an energy-saving liquid receiver. The top of the energy-saving liquid receiver is connected to the evaporator through a pipe, and the side end of the energy-saving liquid receiver is connected to the condenser through a pipe. The evaporator is divided into two liquid supply methods for heat exchange. One supply is for low-temperature refrigerant for refrigeration. When defrosting is required, the second supply is for high-temperature antifreeze for defrosting. The antifreeze is heated by the exhaust heat of the compressor. After defrosting, the high-temperature antifreeze becomes low-temperature antifreeze after heat exchange and flows back to the water tank. When the refrigeration unit is turned on for cooling, the low-temperature antifreeze exchanges heat with the exhaust gas to heat the antifreeze into high-temperature antifreeze, realizing recycling.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, and in particular to an internal heating defrosting refrigeration evaporation system. Background Technology

[0002] An evaporator is a heat exchanger in which liquid refrigerant evaporates. It belongs to the indirect heat exchanger type. The heat of the medium being cooled is transferred to the refrigerant through the pipe or plate wall. The refrigerant evaporates at a low temperature, carrying away the heat from the evaporator, thereby achieving the purpose of refrigeration. It is used to cool liquids or liquid refrigerants, such as the evaporator in a water chiller unit, which can cool water for use in air conditioning systems, industrial cooling, and other fields. Air coolers are used to cool air. The refrigerant flows and evaporates inside the pipes, while the air circulates naturally or is forced to circulate outside the pipes and is cooled. Common examples include the indoor unit evaporator of a household air conditioner and the air cooler in a cold storage. Contact evaporators have the refrigerant evaporating on one side of the indirect heat exchanger, while the other side is in direct contact with the solid being cooled or frozen. This eliminates the need for a refrigerant and improves heat transfer efficiency. Examples include plate freezers used for food freezing.

[0003] However, existing evaporators have the following disadvantages:

[0004] Currently, there are three types of defrosting methods used in the market. The first is natural defrosting with air when the evaporation temperature is 0 degrees Celsius. The second is that most of the evaporation temperatures below -10 degrees Celsius are heated by electric heating tubes, which consumes too much energy. The third is that water defrosting is used when the evaporation temperature is below -10 degrees Celsius. This method consumes less energy but consumes a lot of water, which wastes water resources and causes pollution.

[0005] Therefore, this utility model provides an internal heating defrosting refrigeration evaporation system. Utility Model Content

[0006] Technical problems to be solved

[0007] The problem solved by this utility model is to provide a highly practical internal heating defrosting refrigeration evaporation system, which solves the problems of high energy consumption and water waste in the defrosting process of the evaporator mentioned in the background art.

[0008] Technical solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: an internal heating defrosting refrigeration evaporation system, comprising an evaporator, a condenser, a compressor, a flange, and an oil separator. The evaporator is connected to a hot water exchange tank, and an oil separator is provided in the conveying direction of the hot water exchange tank. The oil separator is connected to the compressor, and the compressor is connected to an energy-saving liquid receiver. The top of the energy-saving liquid receiver is connected to the evaporator through a pipeline, and the side end of the energy-saving liquid receiver is connected to the condenser through a pipeline.

[0010] Optionally, a defrosting water pump is installed on the pipeline between the hot water tank and the evaporator, and the defrosting water pump is used to transport liquid during the defrosting process.

[0011] Optionally, a filter is connected to the lower part of the energy-saving liquid receiver, a solenoid valve is connected to the filter, a plate heat exchanger is provided on one side of the solenoid valve, a corresponding electronic expansion valve is installed between the plate heat exchanger and the solenoid valve, a one-way valve is connected to the plate heat exchanger, and the one-way valve is connected to the evaporator through a pipeline.

[0012] Optionally, the plate heat exchanger is arranged on the pipeline between the solenoid valve and the check valve to achieve heat exchange between different fluids.

[0013] Optionally, the solenoid valve is located on the pipeline between the filter and the solenoid valve, and the solenoid valve is used to control the flow between the filter and the solenoid valve.

[0014] Optionally, the filter is located on the pipeline between the energy-saving liquid reservoir and the solenoid valve, and the filter is used to filter impurities in the pipeline.

[0015] Beneficial effects

[0016] This utility model provides an internal heating defrosting refrigeration evaporation system, which has the following beneficial effects:

[0017] 1. This internal heating defrosting refrigeration evaporation system has high refrigeration efficiency: the compressor, oil separator, condenser, evaporator, energy-saving liquid receiver and other components form a complete and efficient refrigeration cycle. The oil separator can effectively separate the lubricating oil in the gas discharged from the compressor, preventing the lubricating oil from entering the subsequent condenser, evaporator and other components, which would affect the heat exchange efficiency. It ensures that the refrigerant can fully exchange heat in each heat exchange component, improves the refrigeration efficiency, and can quickly reduce the temperature of the target area to the set value.

[0018] 2. This internal heating defrosting refrigeration evaporation system makes full use of energy: the hot water tank is connected to the evaporator, which can recover the energy related to the cold energy generated by the evaporator during the refrigeration process and use it for hot water supply, etc., realizing the secondary use of energy, improving the energy utilization rate of the system, and reducing energy waste. At the same time, the energy-saving liquid receiver can reasonably store and adjust the amount of refrigerant according to the system operating status, so that the system always operates at the optimal refrigerant charge, further reducing energy loss.

[0019] 3. This internal heating defrosting refrigeration evaporation system is stable and reliable in operation: the one-way valve prevents fluid backflow, avoiding impact or interference to system components caused by reverse fluid flow, and ensuring that each component operates according to the predetermined process; the filter can filter impurities in the refrigerant, preventing impurities from clogging the pipeline or damaging key components such as the compressor and expansion valve, and extending the service life of the components; the defrosting water pump, plate heat exchanger, solenoid valve and other components work together to efficiently complete auxiliary functions such as defrosting, and the components are combined through reliable connection methods such as flanges, making the entire system structure stable, with a low failure rate and stable reliability during operation.

[0020] 4. This internal heating defrosting refrigeration evaporation system has diverse functions: in addition to the basic refrigeration function, it can prepare hot water through the hot water exchange tank and exchange heat between different fluids through the plate heat exchanger. It can be applied to various scenarios that require simultaneous refrigeration and heat recovery, such as commercial buildings and industrial production sites that have both refrigeration and hot water needs, thus expanding the application scope of the system.

[0021] 5. This internal heating defrosting refrigeration evaporation system is intelligent and convenient: each component in the system can be used with corresponding control devices to realize intelligent control of processes such as refrigeration cycle, energy recovery, and defrosting. It can automatically adjust operating parameters according to ambient temperature, load demand, etc., without the need for frequent manual intervention, making it convenient to use and conducive to further optimizing system operation and reducing energy consumption. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0024] Figure 3 This is a connection diagram of the oil separator in this utility model;

[0025] Figure 4 This is a schematic diagram of the compressor connection in this utility model.

[0026] In the diagram: 1. Evaporator; 2. Hot water tank; 3. Check valve; 4. Defrosting pump; 5. Plate heat exchanger; 6. Solenoid valve; 7. Filter; 8. Flange; 9. Energy-saving liquid receiver; 10. Compressor; 11. Oil separator; 12. Condenser; 13. Electronic expansion valve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1 to 4 This utility model provides a technical solution: an internal heating defrosting refrigeration evaporation system, including an evaporator 1, a condenser 12, a compressor 10, a flange 8, and an oil separator 11. The evaporator 1 is connected to a hot water exchange tank 2, and an oil separator 11 is arranged in the conveying direction of the hot water exchange tank 2. The oil separator 11 is connected to the compressor 10, and the compressor 10 is connected to an energy-saving liquid receiver 9. The top of the energy-saving liquid receiver 9 is connected to the evaporator 1 through a pipe, and the side end of the energy-saving liquid receiver 9 is connected to the condenser 12 through a pipe. The evaporator 1 is used as an internal heating hot water defrosting system, which reduces the energy consumption caused by electric defrosting. Since the evaporator 1 heats from the inside out, the defrosting efficiency is improved. The evaporator 1 uses water for defrosting, which reduces the safety hazards of electric leakage and cold storage fire caused by electric heating tube heating process, and greatly improves safety risk.

[0029] A defrosting water pump 4 is installed on the pipeline between the hot water tank 2 and the evaporator 1. The defrosting water pump 4 is used to transport liquids during the defrosting process. During operation, the defrosting water pump 4 can be used to transport relevant liquids.

[0030] The lower part of the energy-saving liquid storage tank 9 is connected to a filter 7, and a solenoid valve 6 is connected to the filter 7. A plate heat exchanger 5 is provided on one side of the solenoid valve 6. A corresponding electronic expansion valve 13 is installed between the plate heat exchanger 5 and the solenoid valve 6. A one-way valve 3 is connected to the plate heat exchanger 5. The one-way valve 3 is connected to the evaporator 1 through a pipeline. The fluid flows in the pipeline and can prevent backflow of the fluid by passing through the one-way valve 3.

[0031] Plate heat exchanger 5 is arranged on the pipeline between solenoid valve 6 and check valve 3 to realize heat exchange between different fluids and meet the heat exchange between fluids during operation.

[0032] Solenoid valve 6 is located on the pipeline between filter 7 and solenoid valve 6. Solenoid valve 6 is used to control the flow of fluid between filter 7 and solenoid valve 6. By controlling the flow of the pipeline, the fluid can be cut off.

[0033] The filter 7 is located on the pipeline between the energy-saving liquid reservoir 9 and the solenoid valve 6. The filter 7 is used to filter impurities in the pipeline and remove impurities to prevent them from adhering to the inner wall of the pipeline and affecting the flow.

[0034] In this invention, the working steps of the device are as follows:

[0035] Evaporator 1 is divided into two liquid supply methods for heat exchange. One supply is for low-temperature refrigerant for cooling. When defrosting is needed, the second supply is for high-temperature antifreeze. The waste heat from the compressor 10 exhaust is used to heat the antifreeze. After defrosting, the high-temperature antifreeze becomes low-temperature antifreeze after heat exchange and flows back to the water tank. When the refrigeration unit is turned on for cooling, the low-temperature antifreeze exchanges heat with the exhaust to heat the antifreeze into high-temperature antifreeze, thus achieving recycling.

[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] 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. An internally heated defrosting refrigeration evaporating system comprising an evaporator (1), a condenser (12), a compressor (10), a flange (8) and an oil separator (11), characterized in that: The evaporator (1) is connected to a hot water tank (2). An oil separator (11) is provided in the conveying direction of the hot water tank (2). The oil separator (11) is connected to a compressor (10). The compressor (10) is connected to an energy-saving liquid storage device (9). The top of the energy-saving liquid storage device (9) is connected to the evaporator (1) through a pipeline. The side of the energy-saving liquid storage device (9) is connected to the condenser (12) through a pipeline.

2. The internal heating defrosting refrigeration evaporation system according to claim 1, characterized in that: A defrosting pump (4) is installed on the pipeline between the hot water tank (2) and the evaporator (1). The defrosting pump (4) is used to transport liquid during the defrosting process.

3. The internal heating defrosting refrigeration evaporation system according to claim 1, characterized in that: The energy-saving liquid storage tank (9) is connected to a filter (7) at the bottom. A solenoid valve (6) is connected to the filter (7). A plate heat exchanger (5) is provided on one side of the solenoid valve (6). A corresponding electronic expansion valve (13) is installed between the plate heat exchanger (5) and the solenoid valve (6). A one-way valve (3) is connected to the plate heat exchanger (5). The one-way valve (3) is connected to the evaporator (1) through a pipeline.

4. The internal heating defrosting refrigeration evaporation system according to claim 3, characterized in that: The plate heat exchanger (5) is arranged on the pipeline between the solenoid valve (6) and the check valve (3) to realize heat exchange between different fluids.

5. The internal heating defrosting refrigeration evaporation system according to claim 3, characterized in that: The solenoid valve (6) is located on the pipeline between the filter (7) and the solenoid valve (6), and the solenoid valve (6) is used to control the flow between the filter (7) and the solenoid valve (6).

6. The internal heating defrosting refrigeration evaporation system according to claim 3, characterized in that: The filter (7) is located on the pipeline between the energy-saving liquid reservoir (9) and the solenoid valve (6), and the filter (7) is used to filter impurities in the pipeline.

Images