scroll compressor

Abstract

The present invention provides a scroll compressor, wherein an interference avoidance part is formed on the side wall surface of at least one of the fixed scroll part and the orbiting scroll part, and the interference avoidance part is formed by making the fixed scroll part and the orbiting scroll part In the state where the centers of the wraps are aligned, it is recessed outside the radius of orbit of the orbiting scroll with the fixed scroll or the orbiting scroll as a reference, so that the end of the fixed scroll is in the circle of the orbiting scroll. By inserting the interference relief portion without causing wrap interference on the arc compression surface, it is possible to prevent a gap between the fixed wrap and the orbiting wrap, thereby improving compression efficiency.

Description

technical field [0001] The present invention relates to a scroll compressor, and more particularly to a scroll compressor in which a rotating shaft overlaps a wrap portion of an orbiting scroll. Background technique [0002] Generally, a scroll compressor is a compressor in which the orbiting scroll is positioned relative to the fixed scroll in a state where the fixed scroll portion of the fixed scroll is engaged with the orbiting scroll portion of the orbiting scroll. The orbiting motion of the disk makes the compression chamber continuously move between the fixed scroll portion and the orbiting scroll portion. The compression chamber is formed by a suction chamber, an intermediate pressure chamber, and a discharge chamber, thereby sucking and compressing refrigerant. [0003] Since suction, compression, and discharge are continuously performed in such a scroll compressor, it is superior to other types of compressors in terms of vibration and noise generated during operatio...

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned conventional scroll compressor, if figure 2 As shown, due to the tolerance gap δ1 formed between the keyway 2b of the orbiting scroll 2 and the key 4a of the Oldham ring 4, an autorotation moment is generated when the orbiting scroll 2 performs an orbiting motion. A specific portion between the orbiting scroll portion 2a of the orbiting scroll 2 and the fixed scroll portion 3a of the fixed scroll 2, that is, the arc compression plane is drawn from the center of the joint portion of the rotating shaft formed on the orbiting scroll 2. When tangent, the tangent point of the arc compression surface that meets the tangent line is the center, and an offset (offset) interval is generated on both sides of the arc compression surface

Since the orbiting scroll 2 is offset in this offset interval β, as image 3 As shown, the wrap interference A occurs between the orbiting scroll portion 2a and the fixed scroll portion 3a, and due to the wrap portion interference A, there occurs between the orbiting wrap portion 2a and the fixed scroll portion 3a at other locations. Leakage gap B, so there is a problem of causing compression loss

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