Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Yoshio Yamada

Genichiro Matsuda

Gaku Miyake

Takahiro Kitai

Masanori Minamio

Hiroyuki Nakata

Takeshi Masaki

Toshihiko Wada

Naofumi Hino

Toru Nakagawa

Yukiko Kitahara

Hiromi Matsumoto

Hirofumi Yasumoto

A liquid treatment device that achieves an effective treatment by forcibly contacting a swirl flow of a hydrogen peroxide-containing treated liquid with a liquid to be treated that has been processed to contain copper ions or iron ions includes a rod-like first electrode, a plate-like second electrode formed of a copper- or iron-containing metal, and a first treatment vessel that causes a liquid to swirl and generate a gas phase in a swirl flow of the liquid. A pulse voltage is applied to the generated gas phase to generate a plasma. The second electrode serves as an anode, and reaches inside of a supply section for a liquid to be treated. The liquid to be treated containing the generated copper ions or iron ions is forcibly brought into contact with hydrogen peroxide generated by the plasma. In this way, the Fenton's reaction effectively takes place, and the liquid treatment performance improves.

Liquid treatment device

An apparatus for producing reforming liquid includes a treatment tank in which an introduced liquid is swirled so as to generate a gas phase in the vicinity of a swirling center of a swirling flow of the liquid, a first electrode which has at least a portion which is disposed in the treatment tank and comes into contact with the liquid in the treatment tank, a second electrode which is disposed so as to come into contact with the liquid in the treatment tank and a power source which is configured to apply a voltage between the first electrode and the second electrode so as to generate plasma in the gas phase. A reformed liquid is produced in a manner that the plasma is generated in the gas phase so as to form a reformed component, and the formed reformed component is dissolved and dispersed in the liquid.

Apparatus for producing reforming liquid and method for producing reforming liquid

There is provided a liquid treatment apparatus which includes a treatment tank which generates a gas phase in a swirling flow of liquid, by swirling an introduced liquid and which treats liquid by applying a pulse voltage to a generated gas phase to generate plasma, in which an insulator which is an insulating space forming member is disposed on a wall surface of one end of the treatment tank so as to prevent a swirling flow from being affected, faces the space connected via the through-hole of the insulator, and thus the first electrode is disposed.

Liquid treatment apparatus

A liquid treatment apparatus including: a tubular treatment tank whose end along a central axis is closed and sectional shape orthogonal to the central axis is a circular shape; a first electrode disposed on one end of the central axis of the treatment tank and having a bar shape; a second electrode disposed on the other end thereof; a power supply applying voltage between the first electrode and the second electrode; a rotation mechanism rotating the first electrode about a central axis of the first electrode; and an air introduction portion introducing the liquid to the one end of the central axis of the treatment tank from a tangential direction of the circular sectional shape of the treatment tank, and causing liquid to swirl about the central axis of the treatment tank therein to generate a gas phase in a swirling flow of the liquid.

A liquid treatment device includes a rod-shaped first electrode; a plate-shaped second electrode configured from a metal containing copper or iron; and a treatment vessel in which introduced liquid swirls, and generates a gas phase in a swirl flow of the liquid. A plasma is generated by applying a pulse voltage to the generated gas phase, and a negative DC voltage is applied between the first electrode and the second electrode serving as a cathode and an anode, respectively. Under the applied negative voltage, the plate-like second electrode generates copper ions or iron ions, and the copper or iron ions undergo Fenton's reaction with the hydrogen peroxide generated by the plasma so that liquid can be efficiently treated.

A liquid processing apparatus includes a processing tank, a first electrode, an insulator, a liquid introduction port, a discharge portion, a second electrode, an opening portion, and a power supply. The first electrode is disposed at the first end of the processing tank. The insulator covers at least a part of a side surface of the first electrode disposed to protrude from an inner wall of the first end of the processing tank into the processing tank. The liquid introduction port causes a liquid to swirl by introducing the liquid in a tangential direction of the processing tank and generates a gas phase in a swirling flow of the liquid. An outer diameter of the insulator is smaller than an outer diameter of a gas-phase generating space where the gas phase is generated in the processing tank.

Liquid processing apparatus

Plasma is generated in a gas phase in a processing tub to produce a reforming component, the produced reforming component is dissolved in a liquid and is dispersed in the liquid to produce a reforming liquid, the produced reforming liquid is discharged from the processing tub to be stored in the storage tub, and gas is supplied from a gas supplier into the reforming liquid in the storage tub. The supplied gas has a bubble shape, comes into contact with the reforming liquid stored in the storage tub, and is deodorized.

Deodorizing apparatus and deodorizing method

A space modification apparatus includes a treatment tank configured to generate a gas phase around a rotating center of a rotating flow of a liquid by rotating the liquid, a first electrode of which at least a part is in the treatment tank so as to be in contact with the liquid in the treatment tank, a second electrode in contact with the liquid in the treatment tank, and a power source configured to apply a voltage between the first electrode and the second electrode to generate plasma in the gas phase to generate modification components, the modification components being dissolved and dispersed in the liquid, and a modification liquid being generated and retained in a storage tank. The modification liquid is sprayed or scattered from a nozzle into a treatment target space via a supply pump in the form of mist.

Space modulation apparatus

An electrode discharge machining apparatus includes a first holder for holding a workpiece to be subjected to electro discharge machining, an electrode provided opposing the workpiece held by the first holder, a capacitor for supplying electric charge to the electrode and the workpiece so as to generate pulse electro discharge between the workpiece and the electrode, a power source for applying a voltage to the capacitor, a switching element provided between the capacitor, and at least one of the electrode, the workpiece and the power source, a switch controller for controlling on and off of the switching element, a current detecting element for detecting a current flowing between the workpiece and the electrode, and a control unit for, based on the current detected by the current detecting element, judging whether or not a short circuit occurs between the workpiece and the electrode. When it is judged that a short circuit occurs between the workpiece and the electrode, the switch controller switches off the switching element for a predetermined time. Use macro to add file identifier.

Growing community of inventors

Hyogo, Japan

Yoshio Yamada