crankshaft and compressor

Abstract

The invention provides a crankshaft and a compressor. The crankshaft includes a long shaft, an eccentric part and a short shaft connected in sequence. The end face of the short shaft is a thrust surface, and the thrust surface has an outer annular lubricating area and an inner annular lubricating area. The lubricating area is set around the inner annular lubricating area; among them, there are multiple outer lubricating grooves in the outer annular lubricating area, and the plurality of outer lubricating grooves are arranged at intervals along the circumference of the outer annular lubricating area; there are multiple inner lubricating grooves in the inner annular lubricating area , a plurality of inner lubricating grooves are arranged at intervals along the circumference of the inner annular lubricating area. When in use, the thrust surface of the crankshaft cooperates with the mating surface of the mating parts. When the crankshaft rotates, the gas and lubricating oil located outside the thrust surface enter the thrust surface and the mating surface through multiple external lubrication grooves and multiple internal lubrication grooves. Between them, a layer of fluid film is formed, which can avoid or reduce the contact and direct friction between the thrust surface and the mating surface, thereby reducing the wear of the crankshaft and mating parts, and improving the performance of the compressor using the above structure.

Description

technical field [0001] The present invention relates to the technical field of compressors, and in particular, to a crankshaft and a compressor. Background technique [0002] During the operation of the rotary compressor, the eccentric part of the crankshaft has a thrust surface, and the thrust surface provides axial support for the crankshaft assembly. When the crankshaft rotates, sliding friction is formed between the thrust surface of the crankshaft and the thrust block. The thrust surface not only bears its own weight but also the weight of the motor rotor at the upper end of the crankshaft, so there is serious friction and wear between the thrust surface and the lower flange. Therefore, during the operation of the compressor, it is necessary to reduce the wear between the crankshaft thrust surface and the thrust block and ensure the stable working state of the crankshaft. SUMMARY OF THE INVENTION [0003] The invention provides a crankshaft and a compressor to reduce...

AI Technical Summary

Problems solved by technology

The thrust surface not only bears its own weight but also bears the weight of the motor rotor at the upper end of the crankshaft, so there is serious friction and wear between the thrust surface and the lower flange

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