Matsushita Electric Industrial Co., Ltd.

Toyotsugu Hatagawa

Isao Kasai

Shigeki Ueda

Shinichi Sakai

Junzo Tanaka

Yuji Hayakawa

Hirofumi Yoshimura

Kimiaki Yamaguchi

Mitsuo Akiyoshi

Haruo Matsushima

Susumu Murakami

Tatsuji Isono

There is disclosed a heating cooking device including a heating chamber for heating an object to be heated, a high-frequency oscillator for generating high-frequency electromagnetic waves, a wave guide for guiding the high-frequency electromagnetic waves from the high-frequency oscillator to the heating chamber, a rotary table for supporting thereon the object to be heated for rotation therewith, and a wave stirrer fan for stirring the electromagnetic waves in the heating chamber. A feeder port of the wave guide is disposed at a side of the heating chamber, and the wave stirrer fan is disposed within the wave guide in opposed relation to the feeder port. The high-frequency oscillator is disposed on the side of the feeder port. The feeder port is larger in size than the wave stirrer fan.

Heating cooking device having a wave guide and feeder port disposed

A cooking heating apparatus has a vapor sensor for sensing the state of heating of food in a heating chamber, thus performing automatic control of the heating operation. An auxiliary exhaust opening for allowing vapor from the heated food to be introduced to the vapor sensor is formed in a region where the flow of the vapor is not influenced by a main flow of air supplied into the heating chamber and flowing towards a main exhaust opening. The vapor sensor is disposed so as to be exposed to the vapor introduced through the auxiliary exhaust opening. The condition of the vapor is therefore sensed quickly without being influenced by the main flow of air.

Oven with an exhaust opening for collecting vapors to control material

Heating appliance with internal non-volatile memory

A microwave heater for thawing a frozen cake uniformly and in a short time. The frozen cake is placed on a high-frequency transmissive resin tray having at the bottom thereof an aluminum plate, and the cake is covered by a cup-shaped aluminum container. The cup-shaped aluminum container and the aluminum plate are respectively provided with a plurality of apertures, and radiation of microwave energy to the frozen cake is controlled with respect to the amount and direction of its introduction by selecting the sizes and positions of the apertures of the cup-shaped container and the aluminum plate.

Microwave heater having a device for thawing frozen cakes

A microwave oven with an improved electric field distribution in the oven is provided. By properly establishing the position of a high frequency oscillator when it is directly affixed to a heating cavity or the position of a feeding opening when the feed through a wave guide is employed, with respect to the dimension of the heating cavity, the electric field distribution is improved and the efficiency is enhanced.

Microwave oven with uniform electric field distribution

Growing community of inventors

Yamatokoriyama, Japan

Toyotsugu Hatagawa