The oil in the compressor is returned to the oil sump through the circuit. The lubricating oil discharged into the system with the gas is sucked, filtered, and returned to the oil pool. The body is designed with ribs to dissipate the heat generated by the compressor and the friction pair. The position of the exhaust port is determined according to the volume ratio, and R is the radius of the piston, the front side is the moment of discharge start, and the rear side is the moment when the discharge process ends. Because of the gap seal, it can be considered that the machine has no dead space. Gas Sealing and Gas Equalization System Pistons and cylinders, cylinders and housings rely on their tiny gaps and oil film to seal the gas. This is the key to the success of this model. So the control of the optimal gap is crucial. If a proper ring groove is added to the working section of the piston, the leakage of the gas can be reduced, and the piston axis can be aligned with the cylinder axis to reduce the frictional power consumption. Appropriately adjust the gap between the cylinder and the cylinder shell at the top dead center to overcome the gap unevenness caused by gas pressure, gravity and bearing clearance between the cylinder and the casing, so as to reduce gas leakage and reduce friction. Power consumption is an effective and feasible means.

In addition, if the labyrinth seal ring groove and the end face seal baffle are added at both ends of the cylinder block, the gas sealing state can be improved. During the operation of the machine, a small amount of gas leaking from the gap between the cylinder and the casing through the gap between the piston and the cylinder will gradually collect on the upper side of the rolling bearing, and communicate with the suction chamber through the internal passage to balance it to maintain the oil in the oil pool. Smooth surface and smooth lubrication system.

(1) Reducing internal leakage, improving air tightness, and solving the relationship between lubrication and cooling are the key to the success of the design of a star-rotor refrigeration compressor. (2) During design and processing, adjust the gap between the cylinder and the casing at the top dead center to ensure that the machine has an optimal clearance between the cylinder and the casing during operation, which is especially important for improving the performance of the machine. .