Electric heating – Inductive heating – With heat exchange
Patent
1995-08-23
1996-09-10
Leung, Philip H.
Electric heating
Inductive heating
With heat exchange
219647, 219469, 298951, 100 93RP, 492 16, 492 46, H05B 614
Patent
active
055537294
ABSTRACT:
An induction heating roller apparatus comprises a rotatable hollow cylindrical roller body made of magnetic material, a pair of end frames for closing the opposite opening ends of the roller body, having roller driving shafts in outer sleeve form, magnetic flux generating device comprising an induction coil wound on an iron core body positioned between the pair of end frames and in the hollow portion of the roller body, a pair of sleeve-like rods projecting from the opposite end surfaces of the iron core body and inserted for relative rotation into the outer sleeve of the shafts, and a pair of auxiliary magnetic flux generating mechanism comprising auxiliary induction coils wound on annular iron cores positioned inside the end frames and fixed at the base portion at which the sleeve-like rods are connected to the iron core body, and wherein the end frames comprise fitting edges fitted in the opposite openings in the roller body, flange portions continuous with the fitting edges and adapted to be applied to the opening end edges of the roller body, and conical bodies projecting, while decreasing in diameter, from the integral common locations between the fitting portions and flange portions toward the roller driving shafts, and wherein the axial lengths of at least the annular iron cores in the auxiliary magnetic flux generating mechanism is such that the annular end surfaces opposite to the base portions at which the iron cores are connected to the iron core body are positioned within the range of the conical portions of the end frames.
REFERENCES:
patent: 5393959 (1995-02-01), Kitano et al.
patent: 5421070 (1995-06-01), Lenk
Kitano Yoshio
Okamoto Kozo
Leung Philip H.
Tokuden Co., Ltd.
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