Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Toshiba Mitsubishi-electric Industrial Systems Corporation

Noboru Wada

Masaki Kuzumoto

Yasutaka Inanaga

Shigenori Yagi

Koji Ohta

Yujiro Okihara

Youichiro Tabata

Akaru Usui

Hirozoh Kanegae

Hiromichi Komiya

Yuji Ganryu

Hajime Nakatani

Taichiro Tamida

Takashi Hashimoto

Yusuke Nakagawa

Takahiro Inoue

Gaku Oinuma

Takahisa Nagayama

Yoshiaki Odai

Tetsuya Honda

Norimitsu Esaki

Shingo Mine

Akihiko Iwata

Koji Wada

Yasuhiro Tanimura

Akira Nakagawa

Tomokazu Sakashita

Yoko Matsuura

Noriaki Katsumata

Osamu Tomita

Ryu Abe

Hiroyuki Igehara

Taichiro Tamita

Mamiko Yoshida

Katsuhiko Kibe

Takayoshi Shimada

Masaya Shigemitsu

In a photocatalyst and a photocatalyst carrier, tungsten oxide microcrystals that have a crystal grain size of 10 nm or less and oxidizes a gaseous chemical substance and titanium oxide microcrystals that have a crystal grain size of 10 nm or less and oxidizes the gaseous chemical substance are irregularly arranged to form a solid.

Photocatalyst, photocatalyst carrier, method for producing photocatalyst, and method for producing photocatalyst carrier

In an ozone generating system in which an intermittent operation is performed, in which an ozone generating operation period in which ozone is generated by discharging gas which contains oxygen in a discharge space of an ozone generating apparatus and an ozone generating operation standby period in which gas is sealed in an ozone generating apparatus and discharge is stopped so as not to generate ozone are performed repeatedly, an absorbent which absorbs at least one of nitric acid and nitrogen oxide is provided in an ozone generating apparatus other than the discharge space.

Ozone generation system and method for operating same

A change amount per unit time of an engine output command for controlling engine output of an internal combustion engine is calculated as an engine output increasing rate, and a power supply device is controlled so that power corresponding to the calculated engine output increasing rate is supplied to a combustion promoter generation device. The combustion promoter generation device generates a combustion promoter through the power supplied from the power supply device to supply the combustion promoter to a combustion chamber of the internal combustion engine, and a generation amount of the combustion promoter increases as the supplied power increases. In this manner, the generation amount of the combustion promoter is adjusted.

Combustion-stabilizing device and combustion-stabilizing method for internal combustion engine

An ozone generator and an internal combustion engine with the ozone generator that can raise ozone additive rate of whole intake air, while suppressing pressure loss in the intake pipe from increasing. The internal combustion engine with an ozone generator includes a tubular intake pipe, through an inner region of which air flows, an ozone generator having an electrode plate that makes ozone and is disposed in the inner region or in the intake pipe, and a limiter that limits the flow of air in the inner region of the intake pipe; the electrode plate has a planar dielectric and high-voltage-side and low-voltage-side electrodes adhered and fixed to the dielectric and is formed in a shape of a plate extending in a direction in which air flows.

Ozone generator and internal combustion engine with ozone generator

In an ozone generating system which performs intermittent operation, that is, an operation in an ozone generating operation period in which ozone is generated by discharging gas including oxygen at a discharge electrode part and an operation in an ozone generating operation standby period in which ozone is not generated by stopping discharge are alternately repeated, a gas circulating device which circulates gas in the ozone generating apparatus and removes at least nitric acid from the gas which is circulated is connected to the ozone generating apparatus.

Ozone generating system and operation method thereof

In an ozone generating device including a discharge unit for discharging a material gas that flows through a discharge space formed between two electrodes to generate ozone and a cooling unit for radiating heat which is generated by the discharging, wherein the material gas is obtained by vaporizing a liquefied raw material, the cooling unit includes a first cooling unit through which a first refrigerant flows in contact with one of the two electrodes and a second cooling unit which is provided further to the downstream side of flow of the material gas in the discharge unit than the first cooling unit, and in which the cold heat source is the liquefied raw material and the temperature of the second refrigerant introduced to the second cooling unit is set to be lower than the temperature of the first refrigerant introduced to the first cooling unit.

Ozone generating device

A system including: an ozone generating device including discharge electrodes forming a discharge space; a gas supplying device; a power source device that supplies power to the discharge electrodes; a temperature adjustment device that adjusts temperature of the discharge electrodes; a control unit that controls the ozone generating device; and a detection unit that detects an ozone generation parameter in the ozone generating device. The control unit increases temperature of the discharge electrodes up to a vaporizing temperature of dinitrogen pentoxide by controlling the temperature adjustment device and the gas supplying device or the temperature adjustment device and the power source device, based on the output ozone generation parameter, to thereby switch operation from a normal operation mode to a cleaning operation mode in which surfaces of the discharge electrodes and the discharge space are cleaned up while continuing generation of ozone in the discharge space.

Ozone-generating system and ozone generation method

An ozone generating apparatus which is provided with a discharge suppressing member formed of a metal plate and covering an outer circumferential surface of a portion of a dielectric tube facing to a tube sheet, the discharge suppressing member being electrically in contact with a metal tube or the tube sheet, wherein the discharge suppressing member is formed by curling the metal plate longer than a circumferential length of the dielectric tube into a circular shape so as to have an overlapping portion, and by joining together, in the overlapping portion, a part of the metal plate placed outside and a part of the metal plate placed inside, at a near-end portion of the metal plate placed outside in the overlapping portion, and wherein the discharge suppressing member has, on the part of the metal plate placed outside in the overlapping portion, a spring portion.

Ozone generator

The present invention provides a method for reducing concentrations of ozone and nitric acid produced in cooling air flowing through a circulating airflow path of a rotary electric machine, the method including: disposing an ozone decomposition unit containing an ozone decomposition catalyst in the circulating airflow path; and allowing the cooling air to pass through the ozone decomposition unit so as to decompose ozone and to suppress production of nitric acid. According to the present invention, the method and device are capable of reducing the concentrations of ozone and nitric acid produced in the cooling air flowing through the circulating airflow path of the rotary electric machine for a long period of time while preventing pressure loss.

Method and device for reducing concentrations of ozone and nitric acid generated in cooling air flowing through circulating airflow paths in rotary electric machines

An ozone generating apparatus is provided which includes a pair of electrodes for producing a discharge by the application of an ac voltage therebetween, and at least one dielectric provided between the pair of electrodes. A source gas containing oxygen is provided into a discharge space in which the discharge is produced to generate ozone by the action of the discharge. A surface lying between at least one of the pair of electrodes and the discharge space and in contact with the discharge has a surface resistivity of 10&#x3a9; to 10&#x3a9;. The source gas provided into the discharge space includes ultrapure oxygen having a purity of not less than 99.9%.

Ozone generating apparatus

A silent discharge plasma apparatus includes a dielectric member, a pair of electrodes opposed to each other across the dielectric member and an alternating-current source applying an alternating-current voltage between the electrodes and causing a discharge. A gas is supplied to a discharge space, where discharge occurs, and a plasma is produced. At least one of the electrodes includes a conductive power feeding thin film on the dielectric member. When the dielectric member is destroyed and an arc discharge develops between the electrodes, the power feeding thin film is eliminated or oxidized, and the arc discharge is stopped.

Silent discharge plasma apparatus

An ozonizer has a flat plate-shaped low voltage electrodea flat plate-shaped high voltage electrodefacing a main surface of the low voltage electrodeThe ozonizer also has a flat plate-shaped dielectricand a spacer for forming a discharge gapof a thin thickness in a laminating direction provided between the low voltage electrodeand the electrodean electrode cooling sheetprovided facing a main surface of the electrodeat a side opposite the discharge gapfor cooling the electrodeThe ozonizer also has a thermal conducting/electric insulating sheetsandwiched between the electrodeand the electrode cooling sheetAn alternating voltage is applied between the low voltage electrodeand the electrodeand a discharge is produced in the discharge gapinjected with oxygen gas to produce ozone gas.

Ozonizer

A plasma-generation power-supply device includes a transformer connected to an alternating-current power-supply, a rectifier connected to the transformer, an inverter connected to the rectifier, a reactor inserted in series in a power line of an ozonizer that is supplied with power from the inverter, and a controller that controls the inverter. The controller detects the current flowing to the ozonizer with a current detector and provides a control that keeps power applied to the ozonizer constant.

Plasma-generation power-supply device

Growing community of inventors

Tokyo, Japan

Noboru Wada