Pumps – Diverse pumps – Including rotary nonexpansible chamber type
Patent
1993-01-19
1994-08-16
Nilson, Robert G.
Pumps
Diverse pumps
Including rotary nonexpansible chamber type
417205, 418 553, F01C 1104
Patent
active
053381599
ABSTRACT:
In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-concentric axes, a procharging device affixed to one end plate and substantially enclosing the scroll wraps and the second end plate. Preferably, the procharging device includes a cup-shaped drive housing secured to one end plate and enclosing the scroll wraps, and a flexible torque-transmitting member connecting between the enclosure member and the second end plate. Apertures are provided in the enclosure member to permit fluid flow into the space enclosed by the enclosure device, with vanes disposed adjacent the apertures to force fluid into the enclosed space during rotation of the scroll wraps. Fluid thus forced into the enclosed space is precharged prior to entering the scroll wraps, being at higher pressure than fluid exterior the enclosed space, improving the operating efficiency of the scroll apparatus.
REFERENCES:
patent: 4927339 (1990-05-01), Riffe
patent: 4954056 (1990-09-01), Muta
patent: 5101644 (1992-04-01), Crum
patent: 5199280 (1993-04-01), Riffe
Kotlarek Peter A.
Riffe Delmar R.
Utter Robert E.
American Standard Inc.
Beres William J.
Ferguson Peter D.
Nilson Robert G.
O'Driscoll William
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