Electromagnetic induction apparatus with cooling grooves

Details Electromagnetic induction apparatus with cooling grooves Electromagnetic induction apparatus with cooling grooves

1984-12-13

1986-05-13

Kozma, Thomas J.

Inductor devices

With temperature modifier

Liquid insulating medium

336 60, H01F 2710

Patent

active

045889724

ABSTRACT:
A transformer has a vertical winding assembly formed of a stack of pancake coils sandwiched between electrically insulating bases each provided on its surface contacted by an associated one of pancake coils with a plurality of cooling grooves extending in spaced relationship along turns of a rectangular electrically conductive wire forming the pancake coil and opening on the upper and lower portions of the base. A liquid refrigerant sprinkled on the winding assembly is arranged to flow through the cooling grooves via the upper open ends and be discharged via the lower open ends.

REFERENCES:
patent: 1143305 (1915-06-01), Nichols
patent: 1156680 (1915-10-01), Fortescue
patent: 1331896 (1920-02-01), Brand
patent: 1580811 (1926-04-01), Burnham
patent: 2853657 (1958-09-01), Hofacker
patent: 3071845 (1963-01-01), Leonard et al.
patent: 3151304 (1964-09-01), Miller
patent: 3271711 (1966-09-01), Beng
patent: 3391363 (1968-07-01), Moore
patent: 3602857 (1971-08-01), Robin
patent: 4255849 (1981-03-01), Beck et al.
Ina et al., "Vapor-Cooled Transformers", Mitsubishi Electric Advance, Dec. 1982, pp. 1-3.

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