Fluid compressing device having coaxial spiral members

Details Fluid compressing device having coaxial spiral members Fluid compressing device having coaxial spiral members

1995-09-20

1997-02-18

Freay, Charles G.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 554, F01C 104

Patent

active

056036140

ABSTRACT:
A fluid machine for transferring working fluid has fixed and rotating spiral members. The fixed spiral member has a stepped internal engagement surface that spirally rises upwardly and inwardly toward its center. The rotating spiral member revolves relative to the fixed spiral member and also has a stepped outer engagement surface that spirally rises upwardly inwardly toward its center. The stepped internal engagement surface of the fixed spiral member engages the stepped outer engagement surface of the rotating spiral member, which together form a compression mechanism. A working space is formed between the engagement surfaces of the spiral members. The capacity of the working space gradually decreases toward the center from the largest to the smallest circumference. A seal member is positioned between the stepped surfaces of the spiral members to seal the working space.

REFERENCES:
patent: 4732550 (1988-03-01), Suzuki et al.
patent: 4969810 (1990-11-01), Stolle et al.

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