The solenoid valve is one of the accessories of the transport refrigeration system. Today corunclima will share you the function and working principle of the solenoid valve
1. the composition of the solenoid valve
The solenoid valve is a valve that controls the automatic on and off of the refrigerant in the refrigeration system. Solenoid valves can be divided into direct acting and indirect acting. Solenoid valves used in commercial refrigeration equipment are generally direct acting.
The solenoid valve is composed of a valve body and a solenoid head, which are generally direct-acting. The so-called direct opening and closing solenoid valve is to use the armature in the solenoid to directly control the opening and closing of the valve hole. The aperture is generally 6- Between 22mm.
2.the role and working principle of the solenoid valve
The role of solenoid valve:
The refrigeration system is divided into high pressure and low pressure, liquid and gas. In order to prevent the high pressure liquid refrigerant from impacting the compressor after the compressor is stopped, solenoid valves are used for protection. When the compressor is started, the system pressure is in a balanced state, so there is no impact At this time, the solenoid valve is powered on to turn on the compressor to start, and the refrigerant circulates for refrigeration.
When the compressor is shut down or the solenoid valve is quickly cut off after the stop, the refrigerant on the high-pressure side will not return to the compressor in the opposite direction, but will pass through the compressor in the direction of circulation. The stop pressure of the compressor is slowly restored to balance.
working principle:
When the refrigeration equipment is started, the electromagnetic coil generates electromagnetic force to open the valve. When the coil in the electromagnetic head is energized, the coil and the armature generate an inductive magnetic field, the armature drives the valve needle to move up, the valve hole is opened, and the fluid flows normally. When the set temperature is reached, when the coil in the solenoid head is de-energized, the magnetic field disappears, the armature drops by itself and the spring force, the valve needle closes the valve hole, and the fluid stops flowing.
Corunclima transport refrigeration system uses top brand danfoss solenoid valve to ensure product quality.
