Electrical winding body and transformer with forced cooling

Details Electrical winding body and transformer with forced cooling Electrical winding body and transformer with forced cooling

H - Electricity

01

F

H01F 27/08 (2006.01) H01F 27/28 (2006.01) H01F 27/32 (2006.01)

Patent

CA 2700669

The invention relates to an electric winding body (1a, 1b, 1c) comprising an electrically conductive winding and an insulation surrounding the winding, wherein the surrounding insulation surrounds the entire winding and forms a mechanically stable winding body, and wherein inside the winding body at least one continuous channel having an opening in the electric winding body is arranged. By arranging an elongation element (2a, 2b, 2c) in the openings of the continuous channels, the channels are elongated beyond the dimensions of the electric winding body, thus providing for improved cooling. By attaching additional lateral elements (8a, 8b, 8c, 8d) on the outer wall of the electric winding body, the intermediate space created in this way forms a new cooling channel, which produces an additional cooling effect due to the air current created by the chimney effect.

L'invention concerne un corps d'enroulement électrique (1a, 1b, 1c) présentant un enroulement électroconducteur et une isolation entourant l'enroulement, l'isolation entourant la totalité de l'enroulement et formant un corps d'enroulement mécaniquement stable, cependant qu'à l'intérieur du corps d'enroulement est disposé au moins un canal continu présentant une ouverture dans le corps d'enroulement électrique. Grâce à la disposition d'un élément de rallonge (2a, 2b, 2c) dans les ouvertures des canaux continus, les canaux sont prolongés au-delà des dimensions du corps d'enroulement électrique, de sorte qu'on obtient un refroidissement renforcé. Grâce à l'application d'éléments latéraux supplémentaires (8a, 8b, 8c, 8d) sur la paroi extérieure du corps d'enroulement électrique, un nouveau canal de refroidissement est formé dans l'espace intermédiaire ainsi créé, ledit canal produisant un effet de refroidissement supplémentaire par suite du courant d'air qui se forme par effet de cheminée.

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