Compressor Introduction

The compressor is regarded as the heart of the refrigeration system, and the specialized term that best represents the characteristics of the compressor is called "steam pump". The actual responsibility of the compressor is to increase the pressure and increase the suction pressure state to the discharge pressure state.
Compression ratio is a technical representation of pressure difference, which means dividing the absolute pressure on the high-pressure side by the absolute pressure on the low-pressure side. The calculation of compression ratio must use absolute pressure values. To avoid negative values in the compression ratio calculation, absolute pressure must be used instead of gauge pressure when calculating the pressure ratio. Only by using absolute pressure values can the calculated compression ratio be positive and meaningful.
There are five types of compressors used in the refrigeration and air conditioning industry: reciprocating, screw, rotary, vortex, and centrifugal. Among them, reciprocating is the most commonly used compressor in small and medium-sized commercial refrigeration systems. Screw compressors are mainly used in large commercial and industrial systems. Rotary compressor and scroll compressor are mainly used for household and small capacity commercial air conditioning devices, while centrifugal compressor is widely used for air conditioning systems in large buildings.
Various reciprocating compressors are generally classified based on the form of the compressor casing and the setting of the driving mechanism. According to the shell form, there are open and closed semi closed compressors. Closed type refers to the entire compressor being installed in one casing.