Rotary electric machine with increased cooling capacity

Details Rotary electric machine with increased cooling capacity Rotary electric machine with increased cooling capacity

1996-04-19

1998-01-06

Laballe, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 43, 310 52, 310 58, 310 59, 310 61, 310 89, 310263, H02K 900

Patent

active

057058652

ABSTRACT:
A rotary electric machine that controls fluid pressure and loss of cooling air, increases the cooling air flow rate, and is able to favorably cool the end of a coil with little regard to the positional relationship between the centrifugal blades and the end of the stator coil, is disclosed. A cooling fan of such a rotary electric machine includes centrifugal blades having deflecting blades disposed therebetween, which are mounted so as to incline towards an inside of the axial direction. The centrifugal blades and the deflecting blades are integrally formed. For this reason, the cooling air accelerates at areas between the individual blades in the centrifugal direction and is separated into two flows, one in the direction of inside portions and one in the direction of outside portions of the end of a stator coil. The end of the stator coil is cooled favorably. Thus, the eddy produced at the inside portions in the end of the stator coil is suppressed from flowing to the outside portions, and increases in fluid pressure loss are prevented.

REFERENCES:
patent: 4536672 (1985-08-01), Kanayama et al.
patent: 4565936 (1986-01-01), Ikegami et al.
patent: 4617485 (1986-10-01), Nakamura et al.
patent: 5177388 (1993-01-01), Hota et al.
patent: 5306972 (1994-04-01), Hokanson et al.
patent: 5325003 (1994-06-01), Saval et al.

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