Thermal expansion valve is an important automatic control component in refrigeration system. It can adjust the opening of the valve and change the refrigerant flow rate by using the temperature change of the gas box head -LRB-temperature sensing packet) as a signal.

The safe operation of the valve should do the following:

The first major: Compressor

The role and practice of hot gas bypass valveThe energy regulation of the refrigeration system generally consists of the following waysCompressor parallel-multi-stage control; Variable speed compressor-frequency conversion, etc. ; With the unloading device of the compressor; Hot gas by-pass.For a co

Today we talk about the refrigeration system of three control valves, they are: evaporative pressure control valve, condensing pressure control valve, suction pressure control valve. They can optimize the performance of the refrigeration system, in the refrigeration system these valves are of great

Working principle and structure of four-way directional valve:The four-way reversing valve is composed of a main valve, a pilot valve and an electromagnetic coil. The pilot valve is used to control the main valve, and the differential pressure is used to switch the valve, so the reversing is flexibl

The four main parts of refrigerating system in cold storage include: refrigerating compressor, condenser, throttling device (expansion valve, capillary, etc.) and evaporator (air cooler) . The four main components and refrigerants become the necessary conditions for realizing the refrigeration cycle

The pressure controller has two main functions:

Direct-acting solenoid valve: Principle: when electrified, the solenoid coil produces solenoid force to lift the shut-off piece from the valve seat, the valve opens; when the power is cut off, the solenoid force disappears, the spring presses the shut-off piece on the valve seat, and the valve close

When the temperature of the cold storage reaches the set value, the temperature controller acts, the solenoid valve loses power, the compressor stops when the low pressure reaches the set value of the shutdown, when the temperature in the cold storage rises back to the set value, the temperature con