The screw refrigeration compressor for air conditi […]
The screw refrigeration compressor for air conditioner is mainly composed of a casing, a screw rotor, a bearing, an energy adjusting device and the like. According to the number of screw rotors, the screw compressor has two kinds of twin screw and single screw.
When the compressor is running, the male rotor drives the female rotor, and the volume of the herringbone element surrounded by the concave and convex tooth grooves of the yin and yang rotor, the meshing sealing line and the inner wall of the cylinder and the end cover constantly changes, thereby realizing the compression of the refrigerant.
The ratio of the compression end pressure to the suction pressure is called the internal compression ratio;
The ratio of the exhaust pressure to the suction pressure is called the external compression ratio;
The compression end pressure is greater than the exhaust pressure is called over compression;
The compression end pressure is less than the exhaust pressure and is called under compression.