Vehicular a.c. generator

Details Vehicular a.c. generator Vehicular a.c. generator

1991-09-10

1993-03-16

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 58, 310 62, H02K 524, H02K 900, H02K

Patent

active

051947706

ABSTRACT:
A vehicular a.c. generator comprising a stator coupled to a pair of brackets on either side, a rotor secured to a rotary shaft supported with both brackets via respective bearings, and a pair of fans fitted to the core portions on either side of the rotor, wherein each bracket has a plurality of suction ports at one end and a plurality of exhaust ports in the outer peripheral portion thereof, wherein the inner edge face of one bracket axially faces vanes of the fan with a small clearance therebetween and wherein the generator is ventilated and cooled by the fans as the rotor rotates, is characterized in that a gently-sloping annular depression is provided in the inner edge face of the one bracket facing the vanes of the fan, the depression being made in a clearance that axially grows larger from the axial center of the suction part toward both the external radial positions thereof.

REFERENCES:
patent: 4132912 (1979-01-01), Wright
patent: 4184804 (1980-01-01), Inagaki et al.
patent: 4464594 (1984-08-01), Matsumoto et al.
patent: 4488070 (1984-12-01), Iwaki et al.
patent: 4659950 (1987-04-01), Gotoh
patent: 5021696 (1991-06-01), Nelson
patent: 5028826 (1991-07-01), Kitamura

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