Patent ID: 7018180
Filing Date: 2006-03-28
Classification: F04C

Abstract:
1. A vacuum preventing device of a scroll compressor comprising: a chamber formed at one side of a fixed scroll and having a suction pressure hole, a middle pressure hole and a discharge pressure hole at a certain portion of its inner circumferential surface to communicate with a suction pressure zone, a middle pressure zone and a discharge pressure zone; an open and shut member installed inside the chamber and selectively allowing the discharge pressure hole and the suction pressure hole to communicate with each other by virtue of a gas pressure of the middle pressure zone and an elastic force of a spring; and a compression gas receiving part formed at a lower surface of the open and shut member facing the middle pressure hole in order to receive portion of the compression gas of the middle pressure zones, wherein the compression gas receiving part is positioned inclined toward the suction pressure zone on the basis of a vertical central line of the open and shut member.