Scroll compressor with cover member defining rear surface adjacent space

Abstract

Provided is an efficient scroll compressor capable of suppressing deformation of a fixed scroll during operation. The scroll compressor includes: a fixed scroll () including a fixed-side end plate () and a spiral fixed-side wrap () protruding from a front surface () of the fixed-side end plate; a movable scroll () including a spiral movable-side wrap () combined with the fixed-side wrap to form a compression chamber (Sc); and a cover member () disposed in a high-pressure space on a rear surface () side of the fixed-side end plate and attached to the fixed scroll. The fixed-side end plate includes a compression chamber adjacent portion () at which the front surface of the fixed-side end plate faces the compression chamber. The compression chamber adjacent portion includes a high-pressure adjacent portion () disposed at a central portion of the compression chamber adjacent portion, and an intermediate- and low-pressure adjacent portion (). At the high-pressure adjacent portion, the front surface of the fixed-side end plate faces a high-pressure compression chamber. The intermediate- and low-pressure adjacent portion is disposed on the outer side of the high-pressure adjacent portion. The cover member defines a low- or intermediate-pressure rear surface adjacent space (S) that faces at least a part of a rear surface of the intermediate- and low-pressure adjacent portion in the compression chamber adjacent portion of the fixed-side end plate.