Swing type air compressor is a positive displacement compressor, the air compression is by the device in the casing parallel meshing with each other of the Yin and Yang rotor tooth groove volume changes to achieve.The main and auxiliary rotors rotate in the casing with its precision, so that the gas between the rotor teeth constantly produces periodic volume changes along the axis of the rotor, from the suction side to the discharge side, to complete the work process of inhalation, closed transportation, compression, exhaust and so on.
(1) Inhalation process.When the rotor rotates, the volume between the main and secondary rotors gradually expands, and the volume is only connected with the suction port, and the outside air is sucked into the volume between the teeth.When the intertooth volume increases to the maximum, the intertooth volume is disconnected from the suction port, and the suction ends.This is the "intake process".
(2) sealing and conveying process.At the end of the inspiration, the main and auxiliary rotor teeth summit and the casing closed, the air in the volume between the teeth is closed in the main and auxiliary rotor and shell composed of the closed cavity, this is the "closure process".The two rotors continue to rotate, the main and auxiliary rotor teeth meshing with each other, the meshing surface gradually moves to the exhaust end, and the air in the volume between the teeth is also transported to the exhaust end, that is, the "conveying process".
(3) Compression and oil injection process.During the conveying process, with the rotation of the rotor, the volume between the teeth decreases due to the meshing of the rotor teeth, and the volume of the gas in the volume between the teeth decreases accordingly. The gas is compressed and the pressure increases, which is the "compression process".At the same time of compression, the lubricating oil is sprayed into the groove and mixed with the air due to the pressure difference.
(4) Exhaust process.When the rotor reaches the point where the intertooth volume is connected with the housing exhaust port, the compressed gas begins to discharge. This process continues until the profile lines at the end of the teeth are fully engaged. At this point, the intertooth volume is zero and the gas is completely discharged, which is the completion of the "exhaust process".
