Introduction to electromagnetic pneumatic valve in screw water chiller is how to work

solenoid pneumatic valve is a kind of switch type ( The on-off type) Automatic pneumatic valve, it adapted to the various working medium, including the gas or liquid refrigerant, fresh water, salt water and lubricating oil. In the screw water chiller is must be equipped with a component, is generally installed in the receiver, Or condenser) With the expansion between the pneumatic valve.

solenoid pneumatic valve is usually by electric magnetic head shell, coil, iron, springs, diaphragm or piston, pneumatic valve, sealing ring and other major parts. Although solenoid pneumatic valve has a variety of forms, but according to the principle of its action, basically divided into two kinds:, direct action, namely open at a time; And indirect action, namely the secondary open. In screw chillers, electromagnetic solenoid coil are often line concatenated with the compressor motor, when the compressor is running, starting electromagnetic pneumatic valve was open; When the compressor stop working, electromagnetic pneumatic valve shut down immediately, in order to avoid a large amount of refrigerant liquid into the evaporator during downtime, prevent compressor in liquid collision cylinder occur when start again.

solenoid pneumatic valve working principle is: when switching power supply, electrical magnetic field coil, iron by magnetic suction, pneumatic valve is opened mouth, into the side and outflow end are interlinked; When the power is cut off, when the coil magnetic disappeared, iron under the action of spring force and the weight of close the pneumatic valve.

about the selection of solenoid pneumatic valve, generally based on the size of the pipe size selection, in addition to choose suitable for the medium inside the the screw chiller pneumatic valve body material. Nagin electromagnetic pneumatic valve screw chillers are well-known brands, % new and original.