Patent ID: 9651045
Date: 2017-05-16
CPC Classifications: F01C,F04C

Claim:
1. A scroll compressor comprising: a partition plate for partitioning an interior of a hermetic container into a high pressure space and a low pressure space; a fixed scroll which is adjacent to the partition plate; an orbiting scroll which is meshed with the fixed scroll and which forms compression chambers; a rotation-restraining member for preventing the orbiting scroll from rotating; a main bearing for supporting the orbiting scroll, in which the fixed scroll, the orbiting scroll, the rotation-restraining member and the main bearing are placed in the low pressure space, the fixed scroll and the orbiting scroll are placed between the partition plate and the main bearing, and the fixed scroll can move in an axial direction of the fixed scroll between the partition plate and the main bearing, the scroll compressor further comprising: a bearing-side concave portion formed in an upper surface of the main bearing, a scroll-side concave portion formed in a lower surface of the fixed scroll, and a columnar member having a lower end inserted into the bearing-side concave portion and an upper end inserted into the scroll-side concave portion, wherein an inner wall of a fixed spiral lap of the fixed scroll is formed up to a location close to an ending-end of an orbiting spiral lap of the orbiting scroll, thereby differentiating, from each other, a containment capacity of one of compression chambers formed by the inner wall of the fixed spiral lap and an outer wall of the orbiting spiral lap, and a containment capacity of the other compression chamber formed by an outer wall of the fixed spiral lap and an inner wall of the orbiting spiral lap, and the columnar member can slide with at least one of the bearing-side concave portion and the scroll-side concave portion, thereby moving the fixed scroll in the axial direction of the fixed scroll between the partition plate and the main bearing.