Sharp Kabushiki Kaisha Corporation

Seiji Kanbara

Seiichi Hirano

Kenji Kimura

Hiroyuki Kato

Tatsuhiko Nakamura

Tohru Fujikawa

Disclosed is a microwave oven provided with: a heating chamber () for housing the object to be cooked therein; a magnetron () that oscillates by having a voltage applied thereto, and generates a microwave to be supplied to the heating chamber (); a radio wave sensor () for detecting the microwave generated by the magnetron (); a timer () for measuring an oscillation starting time that is a period of time from when the voltage is applied to the magnetron () to when the microwave is detected by the radio wave sensor () due to the oscillation; and a notification unit () for sending a notice about the timing at which the magnetron () should be exchanged. When the oscillation starting time becomes longer than a prescribed period of time, a notice about that fact is sent by the notification unit ().

Microwave oven

In a cooking device for cooking an object to be heated, a first operation section is provided to a lower portion of a door, and a second operation section is provided to an upper portion on a front face of a cooking device body so as to be exposed in spite of the door being opened or closed. Numeric keys for accepting a selection from a plurality of recipes stored in advance and start keys for accepting a start of heating are provided to the first and second operation sections redundantly. Therefore, in a case of when the door closes, the first and second operation sections can be used in parallel, allowing arrangement of many keys to have good operability.

Cooking device

A cooking device includes a first waveguide portion to make a microwave emitted into a heating chamber propagate radially in the directions almost parallel with the bottom face of the heating chamber and to guide the microwave propagated in the almost parallel directions into the heating chamber, and a second waveguide portion to make the microwave guided into the heating chamber by the first waveguide portion further propagate radially in directions almost parallel with the bottom face and to guide the propagated microwave into the heating chamber.

Growing community of inventors

Osaka, Japan

Seiji Kanbara