Axial double-floating structure of scroll compressor

Abstract

The invention provides an axial double-floating structure of a scroll compressor. The scroll compressor adopts a static-scroll axial floating structure or a movable-scroll axial floating structure, wherein sealing grooves are simultaneously formed at tooth tips of a movable scroll and a static scroll; sealing rings are put into the sealing grooves; the tooth tips and tooth bottoms of the movable scroll are respectively in clearance fit with tooth bottoms and the tooth tips of the static scroll; and clearances are larger than the elongation amount of teeth of the scrolls, which is caused due to thermal expansion, and smaller than fit clearances between the tooth tips and the tooth bottoms of the static and the movable scrolls of a compressor which does not float and adopts tooth tip sealing ring structures of the movable and the static scrolls. Compared with the prior art, the axial double-floating structure has the advantages that leakage at the tooth tips and the tooth bottoms of the movable and the static scrolls can be effectively reduced, the tooth height fitting accuracy of the movable and the static scrolls can be further lowered, and the processing economy of the scrolls is improved.

Description

technical field [0001] The invention relates to a compressor, in particular to an axial double floating structure of a scroll compressor. Background technique [0002] Most of the existing axial floating structures of scroll compressors are fixed scroll axial floating and movable scroll axial floating (such as figure 1 shown) and non-floating, using the movable scroll and fixed scroll tooth top seal ring structure (such as figure 2 shown). Corresponding to the movable and static scrolls with the axial floating structure of the fixed scroll and the axial floating structure of the movable scroll, generally the tooth top of the fixed scroll and the tooth bottom of the movable scroll directly contact and cooperate. The tooth height or tooth bottom of the movable and static scrolls should be corrected. At the same time, the matching precision of the tooth heights of the matched movable and static scrolls is high. Generally, it is realized by matching or improving the machining...

AI Technical Summary

Problems solved by technology

Corresponding to the movable and static scrolls with the axial floating structure of the fixed scroll and the axial floating structure of the movable scroll, generally the tooth top of the fixed scroll and the tooth bottom of the movable scroll directly contact and cooperate. The tooth height or tooth bottom of the movable and static scrolls should be corrected. At the same time, the matching precision of the tooth heights of the matched movable and static scrolls is high. Generally, it is realized by matching or improving the machining accuracy, and the processing economy is not good.

In addition, under special working conditions, the tooth top and tooth bottom of the movable and static scroll may be worn. This kind of wear is irreversible. After the wear, the internal leakage of the compressor will increase, resulting in a decrease in the efficiency of the compressor.

For non-floating, the structure of the movable scroll and the fixed scroll tooth top seal ring is adopted. In order to prevent the seizing phenomenon of the movable and static scroll, the tooth top and bottom of the movable and static scroll are both clearance fit. The gap is nearly 100 microns, which causes the leakage of the vortex to increase, which will reduce the efficiency of the compressor

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