Radial cooled autotransformer assembly

Details Radial cooled autotransformer assembly Radial cooled autotransformer assembly

1989-11-08

1991-07-23

Kozma, Thomas J.

Inductor devices

With temperature modifier

Ventilating passages

336180, H01F 2708

Patent

active

050347160

ABSTRACT:
An inexpensive autotransformer assembly adapted to withstand and operate under stingent conditions for permitting the flow of a fluid in both the axial and radial directions therethrough to cool both the core and the windings is disclosed. A first embodiment comprises an autotransformer assembly having a core and at least two groups of windings spaced apart thereon. The core includes a central cooling channel and a plurality of radial channels extending outwardly from the central cooling channel and terminating at openings in the outer surface of the core. A second embodiment comprises an autotransformer assembly having a core and at least two groups of windings thereon. A plurality of longitudinal spacers disposed on the outer surface of the core serve as a means for spacing the windings from the core in order to provide an axial coolant path along the outer surface of the core.

REFERENCES:
patent: 694673 (1902-03-01), Schwedtmann
patent: 834148 (1906-10-01), Lord
patent: 834160 (1906-10-01), Nichols
patent: 873166 (1907-12-01), Nichols
patent: 1342310 (1920-06-01), Steinberger
patent: 1527810 (1925-02-01), Manegold
patent: 1529570 (1925-03-01), Bethke
patent: 1546885 (1925-07-01), Burnham
patent: 3195085 (1965-07-01), Moore
patent: 4675637 (1987-06-01), Fevrier et al.
patent: 4796143 (1989-01-01), Odenkirchen et al.

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