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US 4,902,998 AGranted
Inductor assembly with cooled winding turns
AssigneeWestinghouse Electric Corp.
InventorDavid D. Pollard
Life of this patent
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Abstract
An inductor assembly is provided with turns of a coil conductor that encircle a leg of a magnetic core and are insulated from the core. Each of the turns includes a portion which extends through an aperture in the core and a second portion positioned outside the aperture. The surface area per unit length of the second portions of selected turns is greater than the surface area of the portions of the turns which extend through the aperture. These portions of increased surface area are spaced apart to permit the flow of cooling medium between the turns.
Claims7
An inductor assembly comprising:
- a magnetic core having a first leg and shaped to form a first aperture for receiving a first coil;
- said first coil including a plurality of turns of a first conductor encircling said first leg;
- means for insulating said first conductor from said core;
- each of said turns including a first portion positioned within said first aperture and a second portion positioned outside of said first aperture;
- said second portions of said turns being spaced apart thereby permitting flow of cooling medium between said second portions;
- the surface area per unit length of said first portions of selected ones of said turns being less than the surface area per unit length of said second portions of said selected turns;
- and
- means for exposing only said second portions of said selected ones of said turns to said cooling medium.
5 more elements
Dependencies are inferred from the claim text.