Patent ID: 6345965
Filing Date: 2002-02-12
Classification: F04B

Abstract:
A dual stage compressor for use with a refrigerant system comprising a condensable fluid expansion stage in fluid and thermal communication with a condensable fluid compression stage, said condensable fluid expansion stage comprises a compressor head including a fluid expansion nozzle disposed in operative relationship between to an condensable fluid expansion chamber formed in said compressor head and the refrigerant system to receive refrigerant therefrom and said condensable fluid compression stage comprises a reciprocating compression piston movable between a first and second position disposed within a compression cylinder an upper portion having an intake port and an intake valve movable between a first position and the second position to selectively control fluid flow from said condensable fluid expansion chamber to the interior of said compression cylinder and an exhaust port and an exhaust valve movable between the first and second position to selectively control fluid flow from said compression cylinder and a lower portion such that when said reciprocating compression piston moves from the first position to the second position a vacuum is created within said compressor cylinder to move said intake valve from the first position to the second position to draw condensable fluids from said condensable fluid expansion chamber through said intake port into the interior of said compression cylinder and the condensable fluid entering said compressor cylinder move said exhaust valve moves from second position to the first position to close said exhaust port and when said compression piston from the second position to the first position the condensable fluid within said compressor cylinder move said intake valve from the second position to the first position to close said intake port and move said exhaust valve from the first position to second position to force condensable fluids from the interior of said compression cylinder through said exhaust port.