Kabushiki Kaisha Toshiba

Kazunori Ishii

Yukio Suzuki

Masayuki Aoki

Takamichi Sujaku

Nobuichi Nishimura

Ryuho Narita

Yoshio Okamura

Hisao Kano

Masahiko Wada

Takumi Ohno

A microwave oven includes a heating chamber, a plurality of cooking utensils detachably disposed in the heating chamber selectively in accordance with the cooking contents, a plurality of heat sources heating food placed on or contained in the cooking utensil and including a magnetron, an oven heater and a grill heater, optical sensors determining the cooking utensil disposed in the heating chamber, and a microcomputer. The cooking utensils include a glass dish, thawing gridiron, pot, upper and lower top plates, one-legged top plate, and gridiron. A microwave cooking mode is selected when the determination of the optical sensors indicates that neither upper nor lower top plate is present in the heating chamber. A heater cooking mode is selected when either upper or top plate is present. When the heater cooking mode is selected on the basis of presence of the upper top plate, either an oven mode or a grill mode is selected depending upon presence or absence of the gridiron. One of the heat sources in accordance with the selected cooking mode is controlled on the basis of a cooking program of the selected cooking mode by the microcomputer.

Microwave oven with automatic cooking mode selecting function

A high frequency heating apparatus includes a casing, an inverter enclosed in the casing, a magnetron supplied with high frequency voltage from the inverter, and three attachment plugs each connected to one of external power supplies of different output voltages. The attachment plugs are connected to the inverter input side via respective power supply selecting switches. The apparatus further includes three display panels one of which is selectively attached to the apparatus. Each display panel has an indicia indicative of one of the power supply voltages used and two projections selectively turning off the other two power supply selecting switches when attached to the apparatus.

High frequency heating apparatus

Growing community of inventors

Tajimi, Japan

Kazunori Ishii