Beveled generator shaft for improved heat transfer

Details Beveled generator shaft for improved heat transfer Beveled generator shaft for improved heat transfer

1989-12-07

1991-04-30

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

165 86, 310 64, H02K 922, F28F 908

Patent

active

050121464

ABSTRACT:
A shaft and a substrate having mating beveled sections for improved heat transfer therebetween. A shaft having a first section, a second section and a beveled section, between the first and second sections such that the second section has a smaller outer diameter than the first section, is provided for rotation within a generator. A substrate having power and heat generating components mounted thereon and a beveled inner radial surface is mounted on the shaft such that a beveled inner radial surface mates with the beveled section of the shaft to provide greater surface area where the substrate and shaft interface, so as to improve heat transfer therebetween as compared to a shaft having a diameter along its entire length equal to the second section and to permit an adjustably tighter fight. The second section of the shaft is threaded to receive a hold-down collar having a threaded inner radial surface for securing the substrate in position.

REFERENCES:
patent: 4144932 (1979-03-01), Voigt
patent: 4353002 (1982-10-01), Kobayashi et al.
patent: 4752221 (1988-07-01), Kurihashi et al.

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