(1) Intake process: The motor drives the rotor, and the tooth groove space of the master and slave rotors rotates to the intake end wall opening
During the compression principle, the space is large and filled with external air. When the intake side end face of the rotor rotates away from the intake port of the shell, the air between the tooth grooves is sealed between the master and slave rotors and the shell, completing the intake process.
(2) Compression process: At the end of the intake, the closed volume formed by the master and slave rotor tooth peaks and the shell decreases with the change of the rotor angle and moves in a spiral shape. This is the "compression process".
(3) Compressed gas and oil injection process:
During the transportation process, the volume continues to decrease, the gas is continuously compressed, the pressure increases, and the temperature rises. At the same time, the lubricant that becomes mist due to the pressure difference is sprayed into the compression chamber, thereby achieving the effects of compression, temperature reduction, sealing and lubrication.
(4) Exhaust process:
When the closed tooth peak of the rotor rotates to meet the exhaust port of the casing, the compressed air begins to be discharged until the matching surface of the tooth peak and the tooth groove moves to the exhaust end surface. At this time, the tooth groove space is zero, and the exhaust process is completed. At the same time, the other pair of tooth grooves of the master and slave rotors have rotated to the intake end, forming a large space, and the intake process begins, thus starting a new compression cycle.