Rotary Positive Displacement Refrigeration Compressor (Screw Type)

Advantages:

(a) Small size, light weight, simple structure, fewer parts,

(b) High speed, stand-alone cooling capacity;

(c) Less wearing parts, maintenance convenience;

(d) Smooth operation;

(e) Single-stage pressure ratio can be used at lower evaporating temperature;

(f) Low exhaust temperature and pressure ratio;

(g) Not sensitive to the wet stroke;

(h)Cooling capacity of between 10% to 100% stepless adjustment;

(I)Easy to operate, easy to achieve automatic control;


Main Parts

(1) inspiratory filter

Suction filter is mainly composed of shell and metal filter. The shell is installed on the aspirated thermometers, pressure gauges and fuel valves. The refueling valve is the the the site of refueling in the unit run-time.

(2) oil separator

Screw compressor oil separator with vertical and horizontal, and the main filler type. My company is currently widely used horizontal two oil, three sub - oil way, high efficiency oil separator, and up to 10PPm. Oil separator and is the compressor, the basis of the motor to make the unit compact.

(3) oil cooler

The oil separation from oil absorb the frictional heat and gas heat leaving temperature ( close to the exhaust gas temperature ). Lubricants normal use temperature is 30 to 60 deg. C, high oil temperature to reduce viscosity, make sealed weakened, increased leakage, reducing the efficiency of the

(4) crude oil filter

Work properly to protect the pump, lubricating oil into the pump crude oil filter to filter out impurities. The filter shell and metal filter housing has a fuel valve, the initial fuel through this valve. Fuel oil through the system vacuum, you can also pump fuel.

(5) pump

Pump compressor is to increase the oil pressure. Often used gear pump or the pump rotor. Before starting the first check the pump direction of rotation.

(6) oil filters

Oil filters by the shell and filter, after assembly in the pump, before the oil distributor, the fine particles in the filtered oil to protect the compressor rotor and shaft seal. To be able to filter out the fine metal debris in the filter contains a permanent magnet.

(7) hydraulic control valve

The role of the hydraulic control valve to adjust the injection pressure compressor. Entering the compressor oil pressure is too high will lead to the injector too large, both the compressor suction flow rate, increased compressor power consumption will also increase the possibility of seal leakage; Low oil pressure, make the fuel injection quantity is too small to weaken the role of the lubricant.

(8) check valve

Check valve, also known as a check valve or check valve. Screw compressor suction cases similar to the piston compressor, the exhaust valve can be automatically separated from the high pressure gas chamber, the compressor suddenly shut down and not had time to close the suction and discharge cut-off valve, the refrigerant gas from the high pressure side flows to the low pressure side of the compressor rotor in the reverse phenomenon of the role of air.