Pumps – Motor driven – Fluid motor
Patent
1993-08-10
1995-05-02
Bertsch, Richard A.
Pumps
Motor driven
Fluid motor
417406, F04B 908
Patent
active
054113792
ABSTRACT:
A pneumatic fan containing a revolving wheel, which has a circumference, first and second stepped fillets at both axial ends thereof, and a rotary main shaft extending from the stepped fillets. The circumference is provided with a plurality of axially extending slots. The pneumatic fan further contains a plurality of impellers which are slidably received by the axially extending slots, each of the axially extending slots having a depth greater than the height of the impellers. Two shaft bearing seats are provided to receive the rotary main shaft at two axial ends thereof. The revolving wheel including the impellers are enclosed in a cylindrical motor seat having an entrance port for receiving air and an exit port for exiting air. The revolving wheel is disposed eccentrically relative to the motor seat, and the motor seat and the rotary main shaft have a point of contact, such that the entrance port and the exit port are disposed equidistantly from, and at opposite sides of, the point of contact. Two ring-shaped collars are provided to fit over the first and second stepped fillets, respectively. The first and second fillets are structured such that the collars are disposed eccentrically relative to the revolving wheel, and both collars are dimensioned such that the sum of its outside radius and the height of the impeller equal the radius of the motor seat.
REFERENCES:
patent: 1442467 (1923-01-01), Chernesky
patent: 3167023 (1965-01-01), Scognamillo
Bertsch Richard A.
Korytnyk Peter
Lianh W. Wayne
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