Twin-walled casing for electric motor with forced air-cooling

Details Twin-walled casing for electric motor with forced air-cooling Twin-walled casing for electric motor with forced air-cooling

1989-12-29

1991-05-28

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 52, 310 58, 310 63, H02K 504, H02K 518, H02K 520/9/16

Patent

active

050197371

ABSTRACT:
An electric motor casing with forced air cooling comprising an outer cylindrical jacket and an inner cylindrical jacket arranged coaxially and radially spaced to form an annular chamber which is open at end sections thereof. The outer jacket and the inner jacket are mutually connected by a plurality of substantially radial ribs, angularly spaced from one another to define, within said annular chamber, a plurality of flow channels for the cooling air, the inner walls of these channels being adapted to make the air flow substantially laminar.

REFERENCES:
patent: 1360483 (1920-11-01), Wiard
patent: 1803570 (1931-05-01), Uggla
patent: 2716195 (1955-08-01), Anderson
patent: 3047753 (1962-07-01), Westell
patent: 3143284 (1964-08-01), Lindsjo et al.
patent: 3445696 (1969-05-01), Erickson
patent: 3643119 (1972-02-01), Lukens
patent: 3916231 (1975-10-01), Cathey
patent: 4465946 (1984-08-01), Springer
patent: 4680493 (1987-07-01), Ziegler et al.
patent: 4684835 (1987-08-01), Kline, Jr. et al.

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