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  4. Main elements of refrigeration system...

Main elements of refrigeration system

Main elements of refrigeration system

According to the type of condensation, air conditioners can be divided into two types: water-cooled and air-cooled. According to the purpose of use, they can be divided into two types: single-cooling and cooling and heating. No matter which type of configuration, they are composed of the following main components Combination.


A) Main components of refrigeration system:Compressor, condenser, evaporator, expansion valve (or capillary tube, subcooling control valve), four-way valve, double valve, one-way valve, solenoid valve, pressure switch, fuse plug, output pressure regulating valve, pressure controller, It is composed of liquid storage tank, heat exchanger, heat collector, filter, dryer, automatic switch, shut-off valve, liquid injection plug and other parts.


B) Main components of electrical system:Motor (for compressors, fans, etc.), operation switches, electromagnetic contactors, interlock relays, overcurrent relays, thermal overcurrent relays, temperature regulators, humidity regulators, temperature switches (for defrosting, preventing freezing, etc.) . Compressor crankcase heater, water cut-off relay, computer board and other components.


C) The control system consists of multiple control devices

1):Refrigerant controller: expansion valve, capillary tube, etc.

2):Refrigerant circuit controller: four-way valve, one-way valve, double valve, solenoid valve.

3):Refrigerant pressure controller: pressure switch, output pressure regulating valve, pressure controller.

4):Motor protector: overcurrent relay, thermal overcurrent relay, temperature relay.

5):Temperature regulator:  temperature position regulator, temperature proportional regulator.

6):Humidity regulator: Humidity level regulator.

7):Defrost controller: defrost temperature switch, defrost time relay, various temperature switches.

8):Cooling water control: water cut-off relay, water volume regulating valve, water pump, etc.

9):Alarm control: over-temperature alarm, over-humidity alarm, under-voltage alarm, fire alarm, smoke alarm, etc.

10):Other controls: indoor fan speed controller, outdoor fan speed controller, etc.




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