Scroll machine with reverse rotation protection

A scroll machine comprising:

• a first scroll member having a first spiral wrap projecting outwardly from an end plate;
• a second scroll member having a second spiral wrap projecting outwardly from an end plate, said second spiral wrap intermeshed with said first spiral wrap, one of said scroll members being mounted for limited axial movement with respect to the other scroll member, said one member being biased toward said other scroll member by a pressurized fluid;
• 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, said scroll machine including a leakage path disposed between two components of said scroll machine, said leakage path extending between said discharge pressure zone and said suction pressure zone, said leakage path being closed due to the influence of said pressurized fluid biasing said two components together;
• a valve member for releasing said pressurized fluid to said suction pressure zone of said scroll machine whereby said leakage path between said discharge pressure zone and said suction zone is opened;
• and
• biasing means for opening said leakage path due to the influence of said biasing means.

A scroll machine comprising:

• a first scroll member having a first spiral wrap projecting outwardly from an end plate;
• a second scroll member having a second spiral wrap projecting outwardly from an end plate, said second spiral wrap intermeshed with said first spiral wrap;
• 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, said scroll machine including a leakage path disposed between two components of said scroll machine, said leakage path extending between said discharge pressure zone and said suction pressure zone, said leakage path being closed due to the influence of a pressurized fluid biasing said two components together;
• a valve member disposed within said suction pressure zone for releasing said pressurized fluid to said suction pressure zone of said scroll machine whereby said leakage path between said discharge pressure zone and said suction zone is opened.