Scroll-type fluid machine with different terminal end wrap angle

Details Scroll-type fluid machine with different terminal end wrap angle Scroll-type fluid machine with different terminal end wrap angle

1988-08-17

1990-02-27

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418150, F01C 104

Patent

active

049041703

ABSTRACT:
A scroll-type fluid machine comprises a stationary scroll member, an orbiting scroll member, a rotation-prevention mechanism for the orbiting scroll member, and a casting accommodating therein both members and the mechanism. The involute angle of a terminal end of a wrap of the orbiting scroll member is selected to be less than that of the wrap of the stationary scroll member by an angle which ranges between 60.degree. and 120.degree., preferably, about 90.degree., thereby reducing a level of force applied to the rotation-prevention mechanism which prevents the orbiting scroll member from rotating about its own axis.

REFERENCES:
patent: 4645436 (1987-02-01), Sakamoto

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