Scroll compressor with slider contacting an elastic member

Abstract

A scroll compressor features a pair of a fixed scroll and an orbiting scroll for forming a compression chamber; an orbiting bearing provided on the counter-compression chamber side of the orbiting scroll; a slider fitted to a slider fitting shaft at one end of a main shaft in such a way that the slider is slidable within a surface perpendicular to the axis of the main shaft, the slider being fitted in the orbiting bearing, a sliding direction of the slider is inclined toward the eccentric direction of the orbiting scroll by a predetermined amount in the rotational direction of the main shaft, in which a recess is provided on the groove end side in the eccentric direction of the slider. Further an elastic member is inserted in the recess between the groove end side in the eccentric direction and the slider fitting shaft while both ends of the plate are supported with respect to the recess. The slider fitting shaft is formed in an arcuate configuration as long as the contact surface between the flat plate and the slide fitting shaft is concerned, and the spiral bodies of the fixed scroll and the orbiting scroll both are made to radially contact each other in the eccentric and counter-eccentric directions of the orbiting scroll after the elastic member is deformed by a predetermined amount. During normal gas compression, the radial gap between both scrolls is reduced to zero in order to effect the compressive action without leakage, whereas during liquid compression, such a radial gap is generated so that the pressure may be relieved.