Sealed type compressor with rolling piston

Abstract

The invention discloses a sealed type compressor with a rolling piston, which comprises a shell, wherein a motor component and a compressor component are arranged in the shell; the motor component comprises a stator, a rotor, a crank shaft and the like; and the compressor component comprises a cylinder, a piston, an upper bearing, a lower bearing and the like. The piston adopts the rolling pistonwhich can adopt a ball roller bearing or a rolling bearing with similar performances. The sealed type compressor with the rolling piston changes a sliding piston into the rolling piston, so the innerwall of the rolling piston is in interference fit with an eccentric part of the crank shaft during mounting, and the sliding friction between the original piston wall and the eccentric part of the crank shaft is changed into rolling friction. Therefore, the friction loss is greatly reduced, and the efficiency of the compressor is improved.

Description

technical field [0001] The invention belongs to a compressor, and in particular relates to a hermetic compressor with a rolling piston which changes sliding pistons into rolling pistons, eliminates sliding friction, and improves compressor efficiency. Background technique [0002] Such as figure 1 , 2 As shown, the compressor in the prior art includes a motor assembly 20 installed on the inner upper side of the housing 1 , and a compressor assembly 30 installed at a certain distance on the lower side of the motor assembly 20 . The casing 1 is composed of a hollow cylindrical body 11 , an upper cover 12 , a lower cover 13 and the like. The motor assembly 20 is press-fitted and fixed on the inner peripheral surface of the cylinder 11, and it is composed of a stator 21, a rotor 22, and a rotating crankshaft 23 that is press-fitted and fixed at the center of the rotor 22 and transmits rotational force. [0003] The compressor assembly 30 includes a cylinder 31, an upper beari...

AI Technical Summary

Problems solved by technology

[0007] However, in the prior art compressor, the piston 35 is a sliding piston, and the inner wall of the piston 35 and the eccentric portion 23a of the crankshaft are in a sliding fit, and there is a certain gap between the inner wall of the piston 35 and the eccentric portion 23a of the crankshaft. There is sliding friction between the inner wall and the eccentric part 23a of the crankshaft, which consumes a lot of energy and reduces the efficiency of the compressor

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