Rotary type fluid machine

Details Rotary type fluid machine Rotary type fluid machine

1985-05-24

1987-07-07

Garrett, Robert E.

Rotary expansible chamber devices

Nutating working member

Non-metallic working member or working chamber portion

418150, F01C 102

Patent

active

046784152

ABSTRACT:
A rotary type fluid machine including a stationary spiral element and a revolving spiral element respectively having a substantially identical configuration and disposed therein 180 degrees apart from each other in mutually nested relationship, the revolving spiral element being adapted to revolve in solar motion relationship with respect to the stationary spiral element with a radius of revolutionary motion .rho., wherein the both spiral elements are respectively defined in profile with a radially outer curve segment consisting of an involute curve, a radially inner curve segment consisting of another involute curve in an inside arc having a radius R, and an arc having a radius r connecting smoothly the radially outer curve segment and the arc having the radius R, thereby ensuring a smallest possible error in the machining and thereby reducing a work period of time on the spiral elements; or wherein there is provided a small gap or clearance between the both spiral elements when installed in a mutual engagement relationship in such a manner that the whole inner and connection curves or part thereof defining the profile of the spiral elements may be caused to be departed out of the mutual engagement relationship in the range between marginal points for defining a due involute curve therefor, thereby ensuring a long service life and a high efficiency performance of the entire rotary type fluid machine.

REFERENCES:
patent: 4417863 (1983-11-01), Ikegawa et al.
patent: 4441870 (1984-04-01), Ikegawa et al.
patent: 4498852 (1985-02-01), Hiraga
patent: 4540355 (1985-09-01), Sakaki et al.
patent: 4547137 (1985-10-01), Terauchi et al.

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