Spray cooled condenser for an integral heat pipe shaft in high p

Details Spray cooled condenser for an integral heat pipe shaft in high p Spray cooled condenser for an integral heat pipe shaft in high p

1995-10-03

1997-05-13

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 54, H02K 900

Patent

active

056295731

ABSTRACT:
A new system for removing heat energy from the rotor of a rotating electrical machine is disclosed. Rotating electrical machines include electric motors, electric generators and the like. The cooling system includes the prior art components of an integral heat pipe rotor shaft, that is, a hollow rotor shaft in which an inner cavity is filled with a suitable working fluid to make an integral heat pipe for removing heat from the rotor. The heat pipe includes an evaporator section inside the rotor and a condenser section extending outside the rotor and the electrical machine housing. The present invention adds a spray chamber surrounding the condenser section. The spray chamber is integrated with the electrical machine housing. Liquid coolant enters the spray chamber and is sprayed through nozzles onto the condenser section to remove the heat transferred from the rotor. The liquid coolant may be routed through a preheater before entering the spray chamber.

REFERENCES:
patent: 3576143 (1971-04-01), Baits
patent: 3914630 (1975-10-01), Lloyd et al.
patent: 4240000 (1980-12-01), Harano et al.
patent: 4728840 (1988-03-01), Newhouse
patent: 5196746 (1993-03-01), McCabria
patent: 5240069 (1993-08-01), Yerkes
patent: 5283488 (1994-02-01), Ponnappan et al.
Ponnappan et al., Thermal Management Issues of Rotors in Rotating Electrical Machines, SAE Technical Paper 942184, Aerotech '94, Los Angeles, CA, Oct. 3-6, 1994.

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