Matsushita Electric Industrial Co., Ltd.

Haruo Matsushima

Junzo Tanaka

Kimiaki Yamaguchi

Ryuji Suzuki

Takashi Niwa

Toyotsugu Matsukura

Shunichi Nagamoto

Shigeru Matsuo

Fumiko Mori

Takashi Komatsu

Toyotsugu Hatagawa

Yukio Abe

A drum type washing machine includes a housing; a rotary drum having a substantially horizontal or slanted rotational axis; a water tub, suspended in the housing, for accommodating therein the rotary drum; a controller for controlling an operation of the washing machine; and a displacement detecting unit disposed between the water tub and a base portion of the housing, for detecting displacement of the water tub. The displacement detecting unit has a primary coil wound around a bobbin; a first secondary coil without overlapping the primary coil and a second secondary coil overlapping the primary coil, the first and the second secondary coils being wound coaxially with the primary coil; and a magnetic body vertically movable inside the bobbin corresponding to a displacement of the water tub.

Drum type washing machine having vibration detection

A highly reliable, accurate humidity measuring device which detects differences in humidity between datum air and measuring air as a time or a phase difference in the propagation velocity of sonic waves, using sonic wave generating and receiving means, and processes this difference using circuitry to provide the humidity condition in the air being tested. Also an oven or heating cooker is disclosed equipped with the humidity measuring device so that it can detect the cooking condition of food by measuring temperature changes due to the steam generated from the food and then using the humidity measuring device to determine when to shut off the heat source of the oven.

Humidity measuring device and a heat cooker employing the device

A method of heating food with microwaves, where in order to avoid uneven heating between the food surface and its interior, which is a problem peculiar to microwave heating, the heat conduction of the food interior is positively used, supplying necessary minimum energies while monitoring the surface temperature of the food, and heating food to the optimum temperature on both the surface of the food and in the interior of the food.

High frequency heating apparatus for heating a material and a method of

A partitioning plate having a configuration which can be inserted into a double wall vacuum container from an opening of vacuum container divides the space of the vacuum container into two spaces. One of the spaces which serves as a heating chamber, is opened and closed by a door. The other space, which serves as a mechanical chamber, accommodates electrical parts. A method for fixing the partitioning plate, on which parts have been installed, to the double vacuum container is faciliated by the provision of a device for regulating the position of the partitioning plate.

Oven having vacuum heat insulating wall and method for assembling same

The present invention relates to a highly reliable, accurate humidity measuring device which detects differences in humidity between datum air and measuring air as a time or a phase difference in the propagation velocity of ultrasonic waves, using ultrasonic wave generating and receiving means, and processes this difference using circuitry.

A high-frequency heating apparatus in which a waveguide having a rectangular terminating opening a.times.b is coupled with a heating chamber perpendicularly at the bottom wall thereby. The waveguide is excited in a TE.sub.0,n mode (n is any positive integer), and a turntable of dielectric material having a rotating center is located on a bisector between the crest (loop) and the valley (node) of this mode. A horizontal electric field is generated along the upper surface of the turntable, thereby strongly heating the center of the bottom surface of an article to be heated and improving the uniformity in heating of the article.

Turntable type high-frequency heating apparatus

A turntable drive mechanism for a microwave oven having an oven-defining structure having a bottom wall and a hingedly supported door for selectively closing and opening an access opening leading into the interior of the oven-defining structure. The turntable drive mechanism has a turntable assembly removably positioned on the bottom wall for rotation about its own center through a plurality of rollers situated between the turntable assembly and the bottom wall, and a plurality of magnets. Cooperating with these magnets carried by the turntable assembly are magnets carried by a rotary carriage driven by a drive unit in one direction and situated below the bottom wall and externally of the oven-defining structure. Rotation of the turntable assembly is induced by rotation of the rotary carriage by the effect of magnetic forces of attraction developed through the bottom wall between the magnets on the turntable assembly and the magnets on the rotary carriage.

Turntable drive mechanism in electronic oven

A microwave oven having an improved electric field distribution to allow uniform heating of an article to be heated is disclosed. High frequency exciting means is positioned at the center, both depthwise and lengthwise, of a heating chamber of substantially parallelepiped structure, and the shapes and construction of the reflecting plate, stirrer vane, mount for partition and heating cavity are improved to allow uniform electric field distribution and improvement in cooking performance.

Microwave oven with uniform electric field distribution

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.

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Yamatokoriyama, Japan

Haruo Matsushima