Patent ID: 6093005
Filing Date: 2000-07-25
Classification: F01C,F04C

Abstract:
A scroll-type fluid displacement machine comprising:a housing, a side cover, a first scroll body, and a second scroll body,wherein said first scroll body rotates around a driving shaft center axis,said second scroll body rotates around an axis offset from said driving shaft center axis,said first and second scroll bodies are rotated synchronously with one another by a single prime mover,each of said first and second scroll bodies has an end plate and at least one circumferentially spirally extending scroll vane fitted on said end plate,said scroll vane of said first scroll body is disposed angularly deviated from said scroll vane of said second scroll body to define a compression chamber for displacing fluid from an outer periphery of said housing toward a center of the housing to compress the fluid,a cylindrical partition wall is provided to extend axially in the center of said housing,a space is provided between said scroll vanes and said cylindrical partition wall to define an end compression chamber, andan outlet port opened to said space is provided in one of said end plates of said first and second scroll bodies,wherein said first and second scroll bodies respectively have a central shaft, the central shafts being coupled to define an Oldham coupling such that the central shafts are offset from one another and rotate synchronously with each other.