Panasonic Intellectual Property Management Co., Ltd.

Daisuke Hosokawa

Koji Yoshino

Takashi Uno

Fumitaka Ogasawara

Yoshiharu Oomori

Mikio Fukui

Kazuki Maeda

Yoshiharu Omori

Masafumi Sadahira

Masayoshi Hiramoto

Tomotaka Nobue

Motoyoshi Iwata

Shinji Takano

Keijirou Kunimoto

Kazuyuki Sakiyama

Makoto Nishimura

Masayuki Kubo

Tomoya Fujinami

Hideki Nakamura

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 heating device includes: a heating chamber for accommodating a heating target object, a microwave generator for generating a microwave, and a coaxial connector. The coaxial connector includes a center conductor, an insulator, and an external conductor. The center conductor is connected to an output terminal of the microwave generator. An air gap is defined between the center conductor and the insulator.

Microwave heating device

A high-frequency heating apparatus according to an embodiment of the present disclosure includes a heating chamber, an electrode, a high-frequency power supply, at least one matching element, and a controller. The heating chamber accommodates a heating target. The high-frequency power supply applies a high-frequency voltage to the electrode. The impedance matcher includes at least one matching element having a matching constant that is variable. The controller stops the high-frequency power supply to complete heating based on a temporal change of the matching constant of the at least one matching element. In this embodiment, a heating target can be heated efficiently.

High-frequency heating apparatus

A microwave treatment device includes a heating chamber for accommodating a heating target, a microwave generator, a feeder, a detector, and a controller. The microwave generator generates a microwave having a frequency in a specified frequency band. The feeder radiates the microwave inside the heating chamber. The detector detects a reflected microwave power reflected from the heating chamber. The controller causes the microwave generator to execute a frequency sweeping in the specified frequency band, and controls the microwave generator according to a temporal change in a frequency characteristic of the reflected microwave power. The temporal change in the frequency characteristic of the reflected microwave power is based on the frequency of the microwave, a level of the reflected microwave power, and a time passed from a start of heating. Thus, it is possible to accurately recognize the progress of cooking while heating the object.

A high-frequency heating apparatus includes: a heating chamber for accommodating a load; a microwave source; at least one radiator; a temperature detector; and a controller. The microwave source generates a microwave and adjusts the frequency and output of the microwave. The at least one radiator radiates a microwave into the heating chamber. The temperature detector detects the temperature in the heating chamber. The controller causes the microwave source to adjust the output of the microwave based on the temperature profile that defines the temperature change in the load, and the temperature in the heating chamber. According to this aspect, food can be heated in accordance with the temperature profile appropriate for the cooking recipe, thereby ensuring the quality of cooked food.

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.

A high frequency heating apparatus of the present disclosure includes a first electrode (), a second electrode (), a high frequency power supply, a position adjuster (), and a controller. The second electrode () is disposed facing the first electrode (). The high frequency power supply supplies high frequency power to the first electrode () or the second electrode (). The position adjuster () adjusts the position of the first electrode (). The controller controls the position adjuster (). The position adjuster () includes a weight (), one or more connecting lines (), one or more pulleys (), and one or more drive units (). The one or more connecting lines () connect the weight () and the first electrode (). The one or more pulleys () support the one or more connecting lines (). The one or more drive units () are attached to the one or more pulleys () and drive the one or more pulleys (). In this embodiment, a heating target can be heated efficiently.

High frequency heating apparatus

A high frequency heating apparatus (A) includes the following components: a first electrode () that is flat; a plurality of flat second electrodes () that are flat; a high-frequency power supply (); a matching unit (); a controller (); and an electric field regulator (). The second electrodes () are placed opposite to the first electrode (). The high-frequency power supply () applies a high-frequency voltage to the first electrode (). The matching unit () is placed between the first electrode () and the high-frequency power supply (), and is impedance-matched with the high-frequency power supply (). The controller () controls the high-frequency power supply (). The electric field regulator () individually adjusts the electric field strengths in a plurality of regions located between first electrode () and the second electrodes (). This aspect can reduce uneven heating.

A microwave treatment device includes a plurality of radiation parts, a transmission line, and a plurality of feeding parts. The plurality of radiation parts includes first, second, and third radiation parts, and radiates a microwave. The transmission line has a loop line structure provided with a plurality of branch parts including first, second, and third branch parts, and transmits the microwave to the first, second, and third radiation parts respectively connected to the first, second, and third branch parts. The plurality of feeding parts includes the first feeding part and the second feeding part arranged in the transmission line at an interval of ¼ or less of the wavelength of the microwave, and transmits the microwave to the transmission line. According to this aspect, a radiation part that radiates the microwave can be selectively switched. This enables the intended heating distribution to be achieved.

A high-frequency heating device that includes: a first conductor; a second conductor disposed with the first conductor through a space therebetween; a high-frequency power source that is connected to the first conductor and the second conductor and that applies a high-frequency voltage between the first conductor and the second conductor; and a connection path that electrically connects the first conductor and the second conductor to each other at a first connection position and a second connection position. The first connection position is different from a first power feeding position at which the first conductor and the high-frequency power source are connected to each other on the first conductor, and the second connection position is different from a second power feeding position at which the second conductor and the high-frequency power source are connected to each other on the second conductor.

High-frequency heating device

The heating cooker includes a first heater disposed below a tray to heat the tray, and second heater disposed over the tray to heat the tray. In addition, the heating cooker includes a controller that controls output of the first heater and switches energization of second heater in accordance with a kind of object to be heated and a quantity of object to be heated. Furthermore, second heater includes two plane-shaped insulators and a plurality of planar heat generators that are sandwiched between insulators, and the controller heats regions that are disposed over and below the tray to be opposed to each other by controlling energization of the first heater and second heater. Furthermore, second heater has a distortion suppressor between the plurality of planar heat generators, and the distortion suppressor suppresses internal distortion of insulators caused by heating of the plurality of planar heat generators of second heater.

Heating cooker

A microwave heating apparatus includes: a heating chamber which houses a heating object; a microwave generating unit which generates a microwave; a transmitting unit which transmits the microwave generated by the microwave generating unit; a waveguide-structure antenna which radiates to the heating chamber the microwave transmitted from the transmitting unit; and a rotation driving unit which drives the waveguide-structure antenna to rotate, wherein the waveguide-structure antenna has a microwave sucking-out opening in a wall surface forming a waveguide structure of the waveguide-structure antenna.

Microwave heating apparatus

A microwave heating device of the present invention comprises a heating chamber housing an object to be heated, a microwave generation portion generating a microwave, a waveguide portion propagating the microwave, and a plurality of microwave radiating portions radiating the microwave in the heating chamber, wherein the microwave radiating portions are arranged in a direction orthogonal to a direction of electric field and to a direction of propagation within the waveguide portion, and centers of the microwave radiating portions are arranged at positions corresponding to approximate node positions of the electric field within the waveguide portion. The microwave heating device is enabled to make uniform heat distribution in the object to be heated, without using a driving mechanism.

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Shiga, Japan

Daisuke Hosokawa