Effect of lubricating oil on refrigeration compressors are

• Lubricants for refrigeration compressors are usually known as refrigeration oil. lubricants in refrigerant compressors plays a major role in the operation:

Ø 1) lubrication to reduce friction and wear of machine parts, extended service life.

Ø 2) share of reducing refrigeration compressor heat.

Ø 3) seal, to prevent refrigerant leakage.

Select refrigeration compressor lubricants are required

Ø the need for appropriate viscosity. excellent low temperature fluidity. should havegood viscosity properties. has good chemical stability and antioxidative. excellent electrical insulation properties.

Ø quality of frozen oil what is the main reason

Ø 1) mixed with water: oil viscosity reducing, corrosive action on metals, and can lead to fluorine refrigerating system pipes, valves of ice plug phenomenon.

Ø 2) oxidation: when the compressor when the temperature is higher, which can cause oxidation, especially poor stability of lubricating oil, over a period of time, formed in the oil residue, the lubrication that will suffer.

Ø 3) refrigerator oil mixed use, will cause the oil viscosity, also have a chemical reaction to form sediment.

What is open, semi-hermetic and hermetic refrigeration compressor

Ø 1) open-type compressors, compressor outside the crankshaft out of the body, bycoupling or belt associated with motor. this type of compressor is called open-typecompressors.

Ø 2) semi-hermetic compressor, compressor and motor body into one, within the same, do not need to install the shaft seal, eliminate the shortcomings of shaft seal most leaks, can use the inhalation of low temperature, low pressure refrigerant gas cools the motor, improves the cooling of the motor. the integrated compressor and motor, reduce the size of the machine.

Ø 3) full closed compressor, as its name suggests, both compressor and motor with was placed in a closed of iron shell within, welding into a overall, from appearance seems, only inhalation, discharge tube and refrigeration agent added shut up, electrical wiring Terminal. full closed compressor of structure than half closed compressor of structure more compact, more light, volume more small, sealed sex better, noise more low.