hermetic compressor

Abstract

The invention discloses a hermetic compressor which comprises a machine frame, a crank shaft, a piston compression mechanism, a stator and a rotor. The crank shaft is provided with an eccentric portion, a balance portion and a straight shaft portion. The machine frame is provided with a first installation position and a second installation position. A hollow supporting sleeve is detachably installed at the first installation position. The piston compression mechanism comprises a cylinder body and a piston capable of axially moving along the inner wall of the cylinder body. The cylinder body is detachably installed at the second installation position. A connecting rod with a bulb portion is hinged to the eccentric portion. The bulb portion is connected to the piston. The supporting sleeve used for installing the straight shaft portion of the crank shaft and the cylinder body where the piston moves are arranged to be detachable individual components, and finish machining only needs to be carried out on the supporting sleeve and the inner wall face of the cylinder body, so that the machining technology requirement for the machine frame and the technological cost of the machine frame are lowered; only the corresponding supporting sleeve or cylinder body rather than the whole machine frame needs to be replaced in the replacing process, so that application cost is reduced, and then the maintenance cost of the whole cooling system is reduced.

Description

technical field [0001] The invention relates to a hermetic compressor. Background technique [0002] The hermetic compressor is a common part of the cooling system, which generally includes a frame, a crankshaft and a piston. In the traditional technology, such as the patent CN201943958U, its structure is to directly set a crankshaft passage for the crankshaft with high precision requirements on the frame. hole and the piston cylinder (actually an opening) for the piston to move, and because the structure of the frame is complex and irregular in shape, the process is complicated and the cost is high when opening a hole with high precision requirements on it, and, When replacing, the entire rack needs to be replaced, and the application cost is relatively high. Contents of the invention [0003] Aiming at the above-mentioned technical deficiencies, the object of the present invention is to provide a hermetic compressor in which the support sleeve for installing the cranksh...

AI Technical Summary

Problems solved by technology

[0002]The hermetic compressor is a common part of the cooling system, which generally includes a frame, a crankshaft and a piston. In the traditional technology, such as patent CN201943958U, its structure is in the machine The crankshaft through hole for the crankshaft to rotate and the piston cylinder (actually an opening) for the piston to move, which require high precision, are directly set on the frame. However, due to the complex structure and irregular shape of the frame, openings on it For holes requiring high precision, the process is complicated and the cost is high, and the entire frame needs to be replaced when replacing, and the application cost is high

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