Scroll-type fluid machine having the eccentric shaft inserted in

Details Scroll-type fluid machine having the eccentric shaft inserted in Scroll-type fluid machine having the eccentric shaft inserted in

1993-10-26

1994-08-09

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

F01C 104, F04C 1816

Patent

active

053360680

ABSTRACT:
A scroll-type fluid machine is provided in which the oscillating motion at the orbiting movement of a moving scroll is considerably decreased. A projecting portion is formed at the center of a moving scroll and moving scroll shaft bearings are fixed in a shaft hole of the projection portion. The moving scroll is positioned such that its center of gravity is positioned at a portion between the moving scroll shaft bearings. The moving scroll is driven at the center of gravity of the moving scroll to prevent the moving scroll from being oscillated at the orbiting movement. As a result, noise is mitigated and the life of the fluid machines is prolonged since wear caused by the oscillating movement is restricted.

REFERENCES:
patent: 4466784 (1984-08-01), Hiraga
patent: 5098265 (1992-03-01), Machida et al.
"The Scroll Machine" by John McCullough et al, Mechanical Engineering/Dec. 1979.

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