Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Takashi Kashimoto

Koji Yoshino

Hideki Sadakata

Kimiaki Yamaguchi

Atsushi Fujita

Makoto Shibuya

Shigeru Kusunoki

Daisuke Bessyo

Akira Ahagon

Shinichi Sakai

Tomotaka Nobue

Hirohisa Imai

Isao Kasai

Satomi Moriyama

Yoshiharu Omori

Yasuo Yoshimura

Hiroyoshi Nomura

Shigeo Yoshida

Hiroaki Kurihara

Yoshihiro Sakamoto

Masato Yota

Masato Youta

A wireless power transmission device comprises: a ground-side coil () for generating a magnetic field by current supplied from a power control device (); a current transformer () for detecting the magnitude of an input from the power control device (); a power supplying device-side control unit () for, based on a detection signal from the current transformer (), controlling the current supplied from the power control device () to the ground-side coil (); and a vehicle-side coil () for receiving power via the magnetic field coming from the ground-side coil (). When detecting an input change having a predetermined value or more on the basis of the detection signal from the input detection unit (), the power supplying device-side control unit () stops the current supplied to the ground-side coil ().

Wireless power transmission device

A power feeding device of a non-contact charging device includes a power factor improvement circuit which converts an AC power supply to DC, and improves a power factor, a smoothing capacitor connected to an output end of the power factor improvement circuit, an inverter circuit which includes a plurality of switching elements, and generates an AC signal using a voltage of the smoothing capacitor as a power supply, a power feeding section which feeds power based on the AC signal to a power receiving device, and a control circuit which modulates at least one of a duty factor or an operation frequency of each of the switching elements of the inverter circuit in synchronization with the AC power supply.

Power feed device of inductive charging device

A power feeding device of a non-contact charging device includes a power factor improvement circuit which converts an AC power supply to DC, and improves a power factor, a smoothing capacitor connected to an output end of the power factor improvement circuit, an inverter circuit which includes a plurality of switching elements, and generates an AC signal using a voltage of the smoothing capacitor as a power supply, a power feeding section which feeds power based on the AC signal to a power receiving device, and a control circuit which modulates a duty factor of each of the switching elements of the inverter circuit in synchronization with the AC power supply, wherein the control circuit controls the plurality of switching elements so that an increment of the modulated duty factor is not equal to a decrement of the modulated duty factor.

A contactless power transmission device includes a power receiver, a power feeder configured to contactlessly feed power to the power receiver, the power feeder including a primary coil configured to generate magnetic flux by an input alternating current voltage, and a cover configured to cover the primary coil, and a capacitive sensor configured to supply an alternating current voltage to an electrode to measure a capacitance occurring between the electrode and foreign matter present around the cover and thereby detect the foreign matter. The frequency of the alternating current voltage of the capacitive sensor is set to be higher than the frequency of the magnetic flux generated by the primary coil.

Contactless power transmission device

A high frequency heating apparatus for heating an object to be heated is provided with an electromagnetic wave emission device for emitting electromagnetic waves, a local heating device capable of heating an optional portion of the object by the electromagnetic waves emitted from the emission device, and a control device for controlling the local heating device. The high frequency heating apparatus is further provided with a stage on which the object is placed, a protecting device for protecting the local heating device, a setting device and a detection device, so that the local heating device, the electromagnetic wave emission device or the stage is controlled in accordance with the setting device or detection device.

High frequency heating apparatus for selective heating of a desired portion of an object

A high frequency heating apparatus for heating an object to be heated is provided with an electromagnetic wave emission device for emitting electromagnetic waves, a local heating device capable of heating an optional portion of the object by the electromagnetic waves emitted from the emission device, and a control device for controlling the local heating device. The high frequency heating apparatus is further provided with a stage on which the object is placed, a protecting device for protecting the local heating device, a setting device and a detection device, so that the local heating device, the electromagnetic wave emission device or the stage is controlled in accordance with the setting device or the detection device.

High frequency heating apparatus

Cooking device with system for controlling cooking of foods

High frequency heating apparatus for providing a uniform heating of an

High-frequency heating apparatus with copper for grounding layer

A high frequency heating apparatus and an electromagnetic wave detector for use in the high frequency heating apparatus, are so arranged to estimate the cooking or thawing state of a food article placed in a heating chamber through detection of microwaves within the heating chamber. By devising a position of an antenna and a method of processing signals of the microwaves as detected, stably and reliable microwave detection becomes possible.

High frequency heating apparatus and electromagnetic wave detector for

An apparatus for regenerating a filter provided to scavenge particulate which is included in exhaust gas discharged from an internal combustion engine. The apparatus includes a heating room accommodating the filter, a heat-combusting device for heat-combusting the particulate scavenged by the filter, a microwave generating device for generating a microwave to be supplied to the heating room, a slit provided in a wall of the heating room, a microwave detecting device for detecting the energy level of the microwave coupled through the slit, and a control section for controlling the heat-combusting device.

Filter regenerating apparatus for an internal combustion engine

A high-frequency heating apparatus includes: a high-frequency oscillator for generating high-frequency electromagnetic waves using electrical power supplied from a power source circuit; a heating chamber into which the high-frequency electromagnetic waves are supplied by the high-frequency oscillator; a receiving antenna which is provided outside the heating chamber and adjacent to an opening of the heating chamber; a dielectric plate for covering the opening, which is provided between the heating chamber and the antenna; and a control circuit which receives an output from the antenna via a detector so as to output a control signal to the power source circuit.

High-frequency heating apparatus

A heating and cooking apparatus has a detection sensor for sensing the state of heating so as to automatically control the heating operation. A partition is disposed so as to be opened to the inside of an auxiliary passage which has an inlet located at a position in the vicinity of the circumference of an impeller of a cooling fan for cooling a magnetron provided on the back side of a heating chamber and through which steam from the heating chamber is discharged to the outside. Air supplied by the fan is blown off into the auxiliary passage so as to generate a venturi action, thus promoting the flow of steam in the auxiliary passage. The detection sensor is disposed in the auxiliary passage at a position in the vicinity of a region where air is blown off so as to accurately sense the state of steam generated from a material to be heated.

Automatic heating apparatus having a system for sensing the temperature

A cooking apparatus such as a high-frequency heating-cooking apparatus having a pyroelectric vapor sensor for detecting the cooking condition of food comprises an air duct for delivering vapor to the pyroelectric vapor sensor and a cooling construction for providing cool air to mix with the vapor as well as cool air to cool the pyroelectric vapor sensor.

Cooking apparatus including a pyroelectric vapor sensor

A pyroelectric sensing apparatus is provided with an A/D convertor 29, whose digital output is examined whether continuation time period of the output from the pyroelectric element is longer than a predetermined reference time period such as 500 m sec; thereby mal-operation due to noise output from the pyroelectric element generated by mechanical shock (door close) or electric shock (pulling out a plug of other apparatus) is eliminated.

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Nara, Japan

Takashi Kashimoto