Fluid Purification Device and Fluid Purification Method

• US 20090269240A1
• Filed: 12/18/2006
• Published: 10/29/2009
• Est. Priority Date: 12/26/2005
• Status: Active Grant

• Current Assignee: KITZ Corporation
• Original Assignee: KITZ Corporation
• Inventors: Tanaka, Toshiharu
• Granted Patent: US 8,282,879 B2
• Time in Patent Office: Days
• US Class Current: 422/24
• CPC Class Codes: C01B 13/11 by electric discharge
• CPC Class Codes: C01B 2201/14 Concentric/tubular dischargers
• CPC Class Codes: C02F 1/32 with ultraviolet light
• CPC Class Codes: C02F 1/4608 using electrical discharges
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2201/003 Coaxial constructions, e.g. a cartridge located coaxially within another
• CPC Class Codes: C02F 2201/3222 Units using UV-light emitting diodes [LED]
• CPC Class Codes: C02F 2201/782 Ozone generators
• CPC Class Codes: C02F 2201/784 Diffusers or nozzles for ozonation
• CPC Class Codes: C02F 2305/023 Reactive oxygen species, singlet oxygen, OH radical

Abstract

A fluid purification device capable of exerting high disinfection/purification functions by a simple structure is provided, and a fluid purification device capable of suppressing, for example, generation of noise and high-voltage charging upon disinfection/purification of a fluid to be treated composed of liquid such as water is provided.

This is a fluid purification device, wherein an inner tube composed of a non-conductive material and an outer tube which is spaced apart from the inner tube by predetermined space S and composed of a non-conductive material are concentrically provided, and a conductive member is attached to a part or entire periphery of the inside of the outer tube to provide an electrode so as to form a device main body; and the fluid purification device has a liquid purification function which, when a voltage is applied to the electrode of the device main body, performs discharge in the space S by using a fluid to be treated W composed of liquid such as water which flows within the inner tube as an earth electrode so as to cause a gas such as oxygen or air flowing in the space S to be reacted to generate ozone and mixes the ozone with the fluid to be treated W so as to purify the fluid.

Claims

1. A fluid purification device, wherein

an inner tube composed of a non-conductive material and an outer tube which is spaced apart from the inner tube by predetermined space and composed of a non-conductive material are concentrically provided, and a conductive member is attached to a part or entire periphery of the inside of the outer tube to provide an electrode so as to form a device main body;

the fluid purification device having a liquid purification function which, when a voltage is applied to the electrode of the device main body, performs discharge in the space by using a fluid to be treated composed of liquid such as water which flows within the inner tube as an earth electrode so as to cause a gas such as oxygen or air flowing in the space to be reacted to generate ozone and mixes the ozone with the fluid to be treated so as to purify the fluid.

3. The fluid purification device according to claim 1, wherein a photocatalyst is formed in the inner tube.

4. The fluid purification device according to claim 3, wherein the outer tube and the inner tube are formed of a transparent or semi-transparent material, and an ultraviolet light source which irradiates the outer peripheral side of the outer tube with ultraviolet light is provided.

5. The fluid purification device according to claim 4, wherein the ultraviolet light source is an electrodeless discharge tube.

6. The fluid purification device according to claim 1, wherein the gas flowing in the space between the outer tube and the inner tube is pressurized to 0.2 to 1 MPa by a device such as a compression device and then subjected to flow control adjustment to 1 to 20 L/min by a fluid controller.

7. The fluid purification device according to claim 1, wherein the gas flowing in the space between the outer tube and the inner tube is pressurized to 0.2 to 1 MPa by a device such as a compression device, then is caused to pass through an air dryer, and is subjected to flow control adjustment to 1 to 20 L/min by a fluid controller.

8. The fluid purification device according to claim 1, wherein a tubular body is attached to an upstream side of the device main body, and at least a hair catcher is attachably/detachably incorporated in the tubular body.

2. A fluid purification device, wherein

an inner tube composed of a non-conductive material and an outer tube which is spaced apart from the inner tube by predetermined space and composed of a non-conductive material are concentrically provided, a conductive member is attached to a part or entire periphery of the inside of the outer tube to provide one electrode, and a conductive member having a width equivalent or more than the width of the electrode of the outer tube is attached to the inside of the inner tube to provide another electrode so as to form a device main body;

the fluid purification device having a gas purification function which, when a voltage is applied between the electrodes of the device main body, performs discharge in the space so as to cause a gas such as oxygen or air flowing in the space to be reacted to generate ozone and mixes the ozone with a fluid to be treated composed of a gas flowing within the inner tube so as to purify the fluid.

9. A fluid purification method, wherein

an inner tube composed of a non-conductive material and an outer tube which is spaced apart from the inner tube by predetermined space and composed of a non-conductive material are concentrically provided;

a conductive member is attached to a part or entire periphery of the inside of the outer tube to provide an electrode;

when a voltage is applied to the electrode, discharge is performed in the space by using a fluid to be treated composed of liquid such as water which flows within the inner tube as an earth electrode so as to cause a gas such as oxygen or air flowing in the space to be reacted to generate ozone; and

the ozone is mixed with the fluid to be treated so as to purify the fluid.

11. The fluid purification method according to claim 9, wherein a photocatalyst is formed in the inner tube, and the photocatalyst is caused to function by ultraviolet light generated when the discharge is performed in the space.

12. The fluid purification method according to claim 11, wherein an ultraviolet light source is provided in the outer peripheral side of the outer tube, and the photocatalyst is caused to function by the ultraviolet light of the ultraviolet light source.

10. A fluid purification method, wherein

an inner tube composed of a non-conductive material and an outer tube which is spaced apart from the inner tube by predetermined space and composed of a non-conductive material are concentrically provided;

a conductive member is attached to a part or entire periphery of the inside of the outer tube to provide one electrode;

a conductive member having a width equivalent or more than the width of the electrode of the outer tube is attached to the inside of the inner tube to provide another electrode;

when a voltage is applied between the electrodes of the device main body, discharge is performed in the space so as to cause a gas such as oxygen or air flowing in the space to be reacted to generate ozone; and

the ozone is mixed with a fluid to be treated composed of a gas flowing within the inner tube so as to purify the fluid.