Patent ID: 6267565
Filing Date: 2001-07-31
Classification: F04C

Abstract:
A scroll machine comprising:a first scroll member having a first spiral wrap projecting outwardly from a first end plate;a second scroll member having a second spiral wrap projecting outwardly from a second end plate;a drive member for causing said scroll members to orbit relative to one another whereby said spiral wraps will create pockets of progressively changing volume between a suction pressure zone and a discharge pressure zone;a chamber defined by one of said scroll members;means for supplying said chamber with an intermediate pressurized fluid, said intermediate pressurized fluid being at a fluid pressure between pressurized fluid in said suction pressure zone and pressurized fluid in said discharge pressure zone;a first temperature responsive valve assembly disposed within a passage extending between said chamber and said suction pressure zone, said first temperature responsive valve assembly releasing said intermediate pressurized fluid from said chamber to said suction pressure zone upon sensing a temperature in excess of a first predetermined value.