Substantially noiseless fan for internally cooling electric moto

Details Substantially noiseless fan for internally cooling electric moto Substantially noiseless fan for internally cooling electric moto

1991-09-20

1993-03-02

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 51, 415 90, H02K 906, H02K 524, F01D 136, F03B 500

Patent

active

051912473

ABSTRACT:
A cooling fan positioned within the casing of an electric motor comprising a plurality of closely spaced frusto-conical disks carried by the motor shaft which draw intake air past the motor rotor and stator when they are rotated. Bodies of air between the rotating disks are then thrown radially outward by centrifugal force and directed to exhaust vents formed in the casing.

REFERENCES:
patent: 983037 (1911-01-01), Feld
patent: 1996460 (1935-04-01), Coates
patent: 2087834 (1937-07-01), Brown et al.
patent: 2632598 (1953-03-01), Wales, Jr.
patent: 4036584 (1977-07-01), Glass
patent: 4406959 (1983-09-01), Harano et al.
Roddy et al., Performance Characteristics of a Multiple-Disk Centrifugal Pump, Mar., 1987.

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