Patent ID: 8678786
Filing Date: 2014-03-25
Classification: F04C

Abstract:
1. A scroll compressor comprising: an orbiting scroll; a fixed scroll parallel to a rotating axis of the orbiting scroll in an axial direction from the orbiting scroll and; a balance chamber axially above and adjacent to the fixed scroll and configured to produce a clamping force between the fixed scroll and the orbiting scroll of the scroll compressor, a discharge chamber; and the check valve interposed in the axial direction between the balance chamber and the discharge chamber, and external to the balance chamber, wherein the check valve is immediately proximate to the balance chamber; wherein the check valve is adapted to permit refrigerant gas to flow from the balance chamber into the discharge chamber when the scroll compressor is started so that a starting torque for the scroll compressor is independent of a vapor pressure of refrigerant at an inlet of the scroll compressor; and wherein the check valve is further configured to close after the orbiting scroll is at its steady state operating speed and increase the clamping force between the orbiting scroll and the fixed scroll.