Microwave oven with a function of induction heating and the cont

Details Microwave oven with a function of induction heating and the cont Microwave oven with a function of induction heating and the cont

1994-12-08

1996-08-20

Leung, Philip H.

Electric heating

Inductive heating

With diverse-type heating

219705, 219680, 219720, H05B 606, H05B 668

Patent

active

055481019

ABSTRACT:
A microwave oven may perform an induction heating mode, dielectric heating mode, and induction/dielectric switch heating mode. The invention is adapted to a microwave oven, in which an induction coil is mounted on the outer bottom wall of a heating chamber, and a heat insulation member is mounted on the induction coil. The microwave oven comprises an induction heating section including an induction coil, a dielectric heating section including a magnetron, a power supply section for generating high frequency power by switching D.C. power obtained by rectifying commercial A.C. power, the power supply section including a power transistor for switching the D.C. power, a switching control section for controlling the switching operation of the power supply section, a door sensing section for determining whether or not door is open, a load sensing section for sensing the material of a cooking vessel loaded in the heating chamber, and, a microprocessor for controlling the high frequency power to be selectively or alternately connected to either of the heating sections based on the state of the door and the material of the cooking vessel.

REFERENCES:
patent: 4456807 (1984-06-01), Ogino et al.
patent: 4464553 (1984-08-01), Ikeda
patent: 4686340 (1987-08-01), Fukasawa
patent: 4749836 (1988-06-01), Matsuo et al.
patent: 4900884 (1990-02-01), Aoki
patent: 5177333 (1993-01-01), Ogasawara
patent: 5360965 (1994-11-01), Ishii et al.
patent: 5362946 (1994-11-01), Matsushima
patent: 5373145 (1994-12-01), Endo et al.

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