Panasonic Intellectual Property Management Co., Ltd.

Kazuki Maeda

Yoshiharu Oomori

Daisuke Hosokawa

Koji Yoshino

Takashi Uno

Fumitaka Ogasawara

Hideki Nakamura

Masayoshi Hiramoto

This high-frequency treatment device includes: a heating chamber configured to accommodate a heating target; a high-frequency power generator; a feeder; a detector; a controller; and a storage. The high-frequency power generator generates high-frequency power having a frequency in a predetermined frequency band. The feeder supplies incident microwave power corresponding to the high-frequency power to the heating chamber. The detector detects at least one of the incident microwave power and reflected microwave power that is included in the incident microwave power and returns from the heating chamber to the feeder. The controller controls heating of the heating target by controlling the high-frequency power generator. The storage stores, together with time elapsed from the start of heating, information detected by the detector. The controller causes the high-frequency power generator to repeatedly generate, on a per frequency basis, the high-frequency power having a plurality of frequencies for the heating. The controller properly controls heating of the heating target on the basis of a temporal change in one of the reflected microwave power, a reflection ratio, and a microwave power difference.

High-frequency treatment device

A microwave treatment device comprises: a heating chamber that accommodates an object to be heated; a microwave generator that generates a microwave in a specified frequency band; an amplifier that amplifies the microwave; a feeding unit that supplies the amplified microwave to the heating chamber; a detector that detects a reflected microwave power; and a controller. The controller selects one of plural frequencies in the specified frequency band and causes the microwave generator to generate the microwave with the selected frequency. The controller causes the amplifier to change an output power of the microwave so that the microwave supplied to the heating chamber has one of plural output powers. The controller measures a reflected microwave frequency characteristic based on reflected microwave powers detected under each of a condition that the microwave has a first output power and a condition that the microwave has a second output power.

Microwave treatment device

A microwave treatment device of the present disclosure includes heating chamber () for accommodating object () to be heated, microwave generator (), heater (), power feeder (), detector (), and controller (). Microwave generator () generates microwaves. Heater () includes a heat source other than the microwaves and heats an inside of heating chamber (). Power feeder () supplies the heating chamber with the microwaves. Detector () detects reflected power from power feeder (). Controller () controls heater () and microwave generator (). When heater () carries out heating, Controller () causes microwave generator () to generate the microwaves in heating by heater (). The microwaves have output power such that the reflected power at a level detectable by detector () returns. By present disclosure, by understanding progress of cooking, a heating target can be appropriately cooked.

A high-frequency heating apparatus includes heating chamber (), generator (), radiator (), and controller (). Heating chamber () has a wall surface including metal, and accommodates object () to be heated. Generator () generates high-frequency power at any frequency in a band of 2.4 GHz to 2.5 GHz. Radiator () includes loop antenna () including a plurality of loop portions (A,B), and radiates the high-frequency power generated by generator () to heating chamber (). Controller () controls a frequency of the high-frequency power generated by generator (). According to this aspect, a heating target can be uniformly heated or partially heated without a waveguide for transmitting high-frequency power.

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Shiga, Japan

Kazuki Maeda