STRUCTURE FOR ADAPTATION IN AXIAL DIRECTION OF SCROLL FLUID MACHINERY

摘要

PURPOSE: A structure for adaptation in axial direction of scroll fluid machinery is provided to improve stability of movement of a rotary scroll and to minimize frictional loss generated between a fixed scroll and the rotary scroll. CONSTITUTION: A back pressure plate(50) is joined to or integrated with un upper end of a driving axis(40) joined with a rotary scroll(20) to transmit driving force in a compressor(2) to form a pressure chamber(52) between the back pressure plate and the rotary scroll making gas or oil with pressure higher than intake gas flow in between a rotary scroll and the back pressure plate to push up the rotary scroll to a fixed scroll(10).