Construction of small freon cold storage electrical equipment

A solenoid valve is arranged on the liquid supply line between the evaporator and the condenser for automatically controlling the on and off of the liquid pipe. When the compressor starts running, the circuit control solenoid valve automatically opens, the condenser small evaporator supplies liquid; when the compressor stops running, the solenoid valve closes, the condenser no longer supplies liquid to the evaporator, so as to avoid the evaporator liquid storage There are many, so as to prevent a wet compressor from being generated when the compressor is restarted, and a steel knocking accident occurs.

High and low pressure relays are respectively arranged on the exhaust pipe and the suction pipe of the compressor for automatically stopping the compressor when the compressor discharge pressure is too high or the suction pressure is too low. In this way, it is possible to prevent the construction of the compressor when the exhaust pressure exceeds the allowable value, and to prevent the compressor from operating and consume power when the evaporation temperature is too low.

A water quantity regulating valve is arranged on the condenser cooling water inlet line, and the brake drum can adjust the amount of cooling water entering the condenser according to the change of the working condition of the condenser, so that the test condensing pressure and the condensing temperature are substantially stable.

There is also a seed circuit: the temperature control solenoid valve, and then the low pressure relay to control the shutdown of the refrigerator. When the temperature reaches the set value, the thermostat closes the solenoid valve, and the control machine continues to work. Since the solenoid valve is already in control, the pressure of the low pressure system is continuously reduced; when it reaches a certain set value, the refrigerator is made Stop.