Composition principle of refrigeration system of refrigerator

Refrigerators have a larger cooling capacity than household refrigerators, and there are more refrigerants filled in the system. Therefore, a liquid storage tank is installed on the pipeline between the condenser and the filter, and a shut-off valve is installed on the tank to shut down the system for a long time. When closing the shut-off valve, the refrigerant liquid is stored in the tank. 　　Compressors are mostly open, driven by a motor through a V-belt. The condenser is air-cooled, with natural convection or cooled with a small axial fan. The evaporator is made of purple steel pipe into a disk-shaped row of pipes, which are distributed on three sides of the cabinet. 　　In the refrigeration system of the refrigerator, a thermal expansion valve is generally used instead of the capillary tube. The expansion valve is also installed between the inlet of the evaporator and the drying filter, which acts as a pressure reducing and throttling refrigerant. Compared with capillary tube, expansion valve is more troublesome to manufacture and maintain, but it is easy to control, adjust and repair, and it is not as strict as the requirement of filling steel tube for filling refrigerant. 　　Some refrigerators are similar to household refrigerators, which also use fully enclosed compressors to make the refrigeration system small and light. To facilitate automatic control, a solenoid valve is installed at the liquid outlet of the condenser, and the electromagnetic valve and the compressor are started and stopped at the same time. When the compressor is stopped, the solenoid valve is powered off and the liquid supply line is automatically closed to prevent a large amount of liquid from entering the evaporator. , Causing failure of the liquid flushing cylinder when driving again. In the refrigeration system with solenoid valve, the condenser is water-cooled. In the condenser, the cooling water condenses the high-temperature and high-pressure refrigerant gas into a liquid, and sets its heat.

Recent related posts

06/20/2020

Composition principle of refrigeration system of refrigerator

Composition principle of refrigeration system of refrigerator Refrigerators have a larger cooling capacity than household refrigerators, and there are more refrigerants filled in the system. Therefore, a liquid storage tank is installed on the pipeline between the condenser and the filter, and a shut-off valve is installed on the tank to shut down the system for a long time. When closing the shut-off valve, the refrigerant liquid is stored in the tank.<img src="{{media url="Composition_principle_of_refrigeration_system_of_refrigerator.jpg"}}" alt="" />

06/20/2020

Working principle of sliding vane compressor_Features of sliding vane compressor

Working principle of sliding vane compressor <img src="{{media url="magefan_blog/Working_principle_of_scroll_compressor_Characteristics_of_scroll_compressor.jpg"}}" alt="" /> 　　 Air is sucked in through a filter and a regulating proportional valve. The regulating valve is mainly used to regulate the pressure chamber formed by the rotor and slide of the air cylinder. The rotor rotates eccentrically with respect to the cylinder, the valve plate is installed in the rotor groove, and the slider is pushed to the cylinder wall by centrifugal force.

06/20/2020

The role of condensing pressure regulating valve

Condensing pressure regulating valve 　　 When the refrigeration device is running, if the condensing pressure is high, the compressor discharge temperature will rise; the compression ratio will increase; the cooling capacity will decrease; The higher the condensing pressure, the greater the above adverse effects. The high condensation pressure is mainly seen in summer. <img src="{{media url="The_role_of_condensing_pressure_regulating_valve.jpg"}}" alt="" />

06/19/2020

Structure of multi-vane compressor_Characteristics of multi-vane compressor

Structure of multi-vane compressor_Characteristics of multi-vane compressor <img src="{{media url="Structure_of_multi-vane_compressor_Characteristics_of_multi-vane_compressor.jpg"}}" alt="" /> The sliding vane refrigeration compressor is a positive displacement rotary compressor. It can be divided into two types: single slide type and multi slide type. Multi-slider compressors are currently mainly used as low-pressure compressors with two-stage compressors.

06/19/2020

Structure diagram of single vane compressor_Main features of single vane compressor

　　 The basic structure and working principle of single slide compressor.<img src="{{media url="Structure_diagram_of_single_vane_compressor_Main_features_of_single_vane_compressor.jpg"}}" alt="" /> Single sliding vane compressor is also called scraper compressor or rolling rotor compressor. Its structure is shown in Figure 3-7. A cylindrical eccentric rotor (also called a piston) is installed in the cylinder, and the center of rotation of the rotor coincides with the center of the cylinder. In the middle of the upper part of the cylinder, a scraper that can slide up and down is installed. Due to the force of the spring,<img src="{{media url="Structure_diagram_of_single_vane_compressor_Main_features_of_single_vane_compressor2.jpg"}}" alt="" />

06/19/2020

Common fault phenomena, causes and elimination methods of piston compressors

Common fault phenomena, causes and elimination methods of piston compressors 　　Common faults of piston compressor (1) 　　 Phenomenon: the compressor cannot start Reasons: 1. Electrical circuit failure; 2. High and medium voltage relay and oil pressure relay are disconnected.<img src="{{media url="Common_fault_phenomena_causes_and_elimination_methods_of_piston_compressors.jpg"}}" alt="" />

06/19/2020

Scroll compressor structure diagram_Scroll compressor advantages and disadvantages

Scroll compressor structure diagram <img src="{{media url="Scroll_compressor_structure_diagram_Scroll_compressor_advantages_and_disadvantages.jpg"}}" alt="" /> 　　 Scroll compressor is a positive displacement compression compressor, the compression component is composed of moving scroll and static scroll. Its working principle is to use the relative orbital motion of the movable and static scrolls to form a continuous change in the enclosed volume, so as to achieve the purpose of compressing gas. Mainly used in air conditioning, refrigeration, general gas compression, and used in automobile engine supercharger and vacuum pump, etc., it can replace traditional medium and small reciprocating compressors in a large range. <img src="{{media url="Scroll_compressor_structure_diagram_Scroll_compressor_advantages_and_disadvantages2.jpg"}}" alt="" />

06/19/2020

Working principle of scroll compressor_Characteristics of scroll compressor

Working principle of scroll compressor <img src="{{media url="Working_principle_of_scroll_compressor_Characteristics_of_scroll_compressor.jpg"}}" alt="" /> 　　 Scroll compressor is a kind of positive displacement compression compressor, the compression part is composed of movable scroll and static scroll. This includes many structural features that divert the flow of gas through the compressor housing to reduce entrained oil.

06/19/2020

Application advantages and working process analysis of air energy heat pump

Air energy heat pump is to use the energy in the air to generate heat energy. It can provide 24 hours a day with large water volume, high water pressure and constant temperature to provide the family with different hot water, cooling and heating needs, and at the same time can meet the above requirements with the least energy consumption.<img src="{{media url="Application_advantages_and_working_process_analysis_of_air_energy_heat_pump.jpg"}}" alt="" />

06/19/2020

Installation instructions for explosion-proof air conditioners

Installation instructions for explosion-proof air conditioners <img src="{{media url="Installation_instructions_for_explosion-proof_air_conditioners.jpg"}}" alt="" /> 1. The power supply of the explosion-proof air conditioner shall have a dedicated line, and a circuit breaker or air switch shall be provided in the dedicated line. The power supply wires and fuses should comply with the relevant regulations and cannot be changed at will.