Liquid cooling for induction motors

Details Liquid cooling for induction motors Liquid cooling for induction motors

1980-01-28

1982-01-19

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 59, H02K 900

Patent

active

043119328

ABSTRACT:
An induction motor is disclosed which utilizes a liquid in intimate contact with the rotor and stator conductors for cooling and yet minimizes the disadvantages of high rotational drag losses associated with conventional spray cooled motors. Cooling liquid is conducted through a hollow rotor shaft and directed to a cavity at the center of the magnetic length of the rotor. The cavity is formed by separating two adjacent rotor laminations. The cooling liquid flows axially from the central cavity toward the rotor ends through slots which contain the rotor conductors. A sealing band is provided around the rotor laminations to prevent cooling liquid from entering the air gap between the rotor and the stator.

REFERENCES:
patent: 2951954 (1960-09-01), Willyoung
patent: 3098941 (1963-07-01), Willyoung
patent: 3188833 (1965-06-01), Robinson
patent: 3261295 (1966-07-01), White
patent: 3480810 (1969-11-01), Potter
patent: 3588557 (1971-06-01), Kilgore
patent: 3629628 (1971-12-01), Rank
patent: 3684906 (1972-08-01), Lenz
patent: 4013908 (1977-03-01), Weghaupt

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