Main bearing seat and scroll compressor

Abstract

The invention relates to a main bearing seat and a scroll compressor having the main bearing seat. In one aspect, the main bearing seat for the scroll compressor comprises a concave part, a thrust surface and an oil discharge passage, wherein an orbiting scroll part of the scroll compressor is engaged with a drive shaft in the concave part; the main bearing seat supports the orbiting scroll part through the thrust surface; and the oil discharge passage is formed in the main bearing seat and configured to extend from the concave part to an exterior of the main bearing seat such that lubricant in the concave part can be discharged from the oil discharge passage, and the main bearing seat further comprises an oil supply passage, the oil supply passage is formed in the main bearing seat and configured to extend from the concave part to the thrust surface, so that the lubricant in the concave part can be provided to the thrust surface via the oil supply passage. Therefore, better lubrication of the thrust surface is achieved, the preset oil circulation rate is obtained by controlling distribution of the lubricant in the oil supply passage and the oil discharge passage, good lubrication of the interior of a compression mechanism is achieved, and the situation that excessive lubricant enters an external system along with exhaust to cause system efficiency degradation is avoided.

Description

Technical field [0001] The present disclosure relates to a main bearing housing for a scroll compressor and a scroll compressor having the main bearing housing. Background technique [0002] This section provides background information related to this disclosure, but this information does not necessarily constitute prior art. [0003] The scroll compressor typically includes a compression mechanism, a cross slip ring, a main bearing housing, a drive shaft, and the like. The main bearing housing supports the movable scroll of the compression mechanism by the thrust plate, and the movable scroll is rotated to rotate to the fixed vortex to the compression mechanism to move vortex and fixed vortex. A series of compression cavities are defined, and it is used to compress the fluid entering the scroll compressor. [0004] In the scroll compressor, the thrust plate of the main bearing housing, the thrust surface of the push plate and the movable scroll contact with the movable scroll is...

AI Technical Summary

Problems solved by technology

[0006] However, in the oil supply path of the lubricant from entering the thrust surface 12 to leaving the thrust surface 12 (reaching the groove 14), the end plate of the movable scroll is in close contact with the thrust plate of the main bearing seat, and the movable scroll The clearance caused by the translational motion of the scroll member 3 is very small, which means that most of the lubricant in the recess 11 is discharged through the oil discharge passage 13, and the amount of lubricant used to lubricate the thrust surface 12 is very limited, often cause thrust surface 12 to wear

Moreover, since the key 41 of the Oldham ring 4 (especially the key for engagement with the fixed scroll 5 ) is higher than the arm of the Oldham ring 4 , the lubricant from entering the groove 14 to reaching the key 41 of the Oldham ring 4 Fuel supply path is limited due to the effect of gravity

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