Inductor for heating inner-circumference of hole

H - Electricity – 05 – B

Patent

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Details

H05B 6/02 (2006.01) H05B 6/38 (2006.01)

Patent

CA 2404176

There is provided an inductor for heating the inner circumference of a hole, by which induction heating of the inner circumference of a hole and so on can be realized rapidly and uniformly in the direction of the.circumference, and there is no risk of a short-circuit between a solenoidal coil and transition conductor passing therethrough. According to a configuration in which a magnetic core 12 with a cylindrical shape is arranged inside of a solenoidal coil 11a which forms the inductor 10, and a transition conductor 11c extending from one end of the solenoidal coil 11a to a feeding terminal through the inside of the solenoidal coil is arranged in an inserted manner into a hollow portion of the magnetic core 12, a risk of the short circuit is avoided by using an insulating material for the magnetic core 12, assuming that the magnetic core 12 with a large cross-sectional area is concentrically arranged in the solenoidal coil 11a.

La présente invention concerne un inducteur pour le chauffage du pourtour intérieur d'un trou ou de l'équivalent, où le chauffage par induction peut être effectué rapidement et de manière uniforme dans la direction du pourtour, sans aucun risque de court-circuit entre une bobine solénoïdale et un conducteur de passage traversant ledit pourtour. Selon une configuration de l'invention, où un noyau magnétique (12) de forme cylindrique est placé à l'intérieur d'une bobine solénoïdale (11a) formant l'inducteur (10) et un conducteur de passage (11c), reliant une extrémité de ladite bobine (11) à une borne d'alimentation par l'intérieur de la bobine solénoïdale, est insérée dans une partie creuse du noyau magnétique (12), tout risque de court- circuit étant évité au moyen d'un matériau isolant pour ledit noyau (12), en supposant que ce noyau (12) d'une surface transversale importante, est placé de manière concentrique dans la bobine solénoïdale (11a).

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