Radial-direction momentarily-changing mechanism of scroll compressor

Abstract

The invention discloses a radial-direction momentarily-changing mechanism of a scroll compressor. The radial-direction momentarily-changing mechanism comprises a static scroll plate, a dynamic scroll plate, a bent axle, axle sleeves, axle sleeve bearings, small bent axles, eccentric sleeves, small main axle diameter bearings and eccentric sleeve bearings. A crank pin is matched with the axle sleeves, the axle sleeve bearings and axle sleeve installing holes of the dynamic scroll plate in sequence. A small crank pin is matched with the eccentric sleeves, the eccentric sleeve bearings and eccentric sleeve installing holes of the dynamic scroll plate in sequence. A main axle diameter is matched with the small main axle diameter bearings and small bent axle installing holes of the static scroll plate. On the basis of a small main axle anti-self-rotating mechanism, radial-direction momentary changing is achieved. The center of gravity of the crank pin is overlapped with the rotating center of a main axle diameter, the dynamic balance performance is improved, the contacting area of a sliding block mechanism consisting of the crank pin and the axle sleeve is large, abrasion is reduced, an included angle of the inclined plane of the crank pin and the moving direction of the dynamic scroll plate is 65-75 degrees, the driving force generates a radial component force which can overcome the radial separating force generated by compressing fluid, and the leakage of a working cavity is reduced.

Description

technical field [0001] The invention belongs to the technical field of scroll compressors, in particular to a scroll compressor radial variable anti-rotation mechanism. Background technique [0002] As a positive displacement compressor, the scroll compressor has the advantages of high energy efficiency and small size, and has been widely used in the fields of air compression, air conditioning and refrigeration. When the scroll compressor is working, there must be a gap between the movable and static scroll teeth, resulting in gas leakage. When solid particles or liquid droplets are mixed into the compression chamber, it will cause scroll gear wear or liquid hammer. These problems can be well solved by adopting the radial follow-up mechanism. [0003] The radial follow-up mechanism disclosed in patent CN1152674A is based on the Oldham anti-rotation mechanism. The wedge-shaped driving surface of the crank pin forms an included angle less than 90 degrees with the moving direc...

AI Technical Summary

Problems solved by technology

Common radial variable anti-rotation mechanisms are mostly cross rings, which need lubricating oil to lubricate during operation, which inevitably does not guarantee that oil will flow into the compression chamber, causing the compressed medium to contain oil

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