Fan unit for generating gas streams

Details Fan unit for generating gas streams Fan unit for generating gas streams

1993-06-14

1994-02-22

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

310 62, F04B 1700

Patent

active

052882160

ABSTRACT:
The invention relates to a fan unit for generating gas streams, in particular for vacuum cleaners, which unit comprises a motor (4) and an impeller wheel (1) which is also electromagnetically active and in conjunction with electromagnetically active parts (19) of the motor stator (3) generates the torque of the impeller wheel via an air gap (11) formed between radial surfaces of the impeller wheel and the motor stator, the electromagnetically active part of the impeller wheel (1) being a conductive disc (7) which is arranged in a radial plane and which has one radial surface (8) bounding the air gap (11) at the rotor side, and the air gap being bounded at the stator side by planar stator poles (19) formed on a radial bounding surface (12) of an iron cylinder (15) by the provision of radial slots (17) in which the coils (20) are arranged.

REFERENCES:
patent: 2947467 (1960-08-01), Palmer
patent: 4603271 (1986-07-01), Maruyama et al.
patent: 5017103 (1991-05-01), Dahl
patent: 5044897 (1991-09-01), Dorman
patent: 5070268 (1991-12-01), Phelon et al.

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