Patent ID: 6655172
Filing Date: 2003-12-02
Classification: F01C,F04B,F04C,F25B

Abstract:
A scroll machine comprising:a shell defining an injection port; a first scroll member disposed in said shell and having a first scroll wrap extending from a first end plate; a second scroll member disposed in said shell and having a second scroll wrap extending from a second end plate, said second scroll wrap being intermeshed with said first scroll wrap to define at least two moving pockets which decrease in size as they move from a radially outer position to a radially inner position upon relative orbital movement of said scroll wraps; a vapor injection passage extending through one of said first and second scrolls, said vapor injection passage extending between said injection port and one of said moving pockets; a source of vapor in communication with said vapor injection passage through said injection port, said source of vapor being secured to said shell for providing vapor directly to said injection port.