Vehicular AC generator

Details Vehicular AC generator Vehicular AC generator

1992-09-16

1993-08-10

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 63, 310 89, H02K 906

Patent

active

052352293

ABSTRACT:
A vehicular AC generator comprises a stator connected to a front bracket and a rear bracket, a rotor fixedly mounted on a rotational shaft rotatably supported by both the brackets, and a front fan and a rear fan each serving for cooling the generator. A plurality of air intake holes are formed around the inner circumstance of each bracket, while a plurality of air outlet holes are formed around the outer circumstance of the same. As the rotor is rotated, cooling air is introduced into the generator through the air intake holes and then exhausted to the outside through the air outlet holes while cooling the interior of the generator. The number of blades on each fan is set to a certain odd numeral, and moreover, the number of blades on the front fan is different from that of the rear fan. The number of blades on each fan may be set to an odd numeral which is not a multiple of numeral of three. Alternatively, the number of blades on at least the front fan may be set to an odd number which is not a multiple of the number of air intake holes formed on the front bracket. The aforementioned characterizing feature of the vehicular AC generator is equally applicable to a three-phase AC generator as it is.

REFERENCES:
patent: 821249 (1906-05-01), Lundell
patent: 1267828 (1918-05-01), Wiard
patent: 1476776 (1923-11-01), Stamm
patent: 3075106 (1963-01-01), Chi
patent: 3518468 (1970-06-01), Wightman
patent: 5028826 (1991-07-01), Kitamura

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