Ozone generating device

Patent metadata

Field	Value
Publication number	US-9932232-B2
Application number	US-201615540122-A
Country	US
Kind code	B2
Filing date	Feb 4, 2016
Priority date	Feb 19, 2015
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

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.

First claim

The invention claimed is:

1. An ozone generating device comprising a discharge unit configured to discharge a material gas which flows through a discharge space which is formed between two electrodes to generate ozone and a cooling unit configured to radiate heat which is generated by discharging,
wherein at least a portion of the material gas is obtained by vaporizing a liquefied raw material,
the cooling unit comprises a first cooling unit through which a first refrigerant flows in contact with at least one of the two electrodes and a second cooling unit which is provided further to a downstream side of flow of the material gas in the discharge unit than the first cooling unit, through which a second refrigerant flows in contact with at least one of the two electrodes, and in which a cold heat source is the liquefied raw material, and a temperature of the second refrigerant which is introduced to the second cooling unit is set to be lower than a temperature of the first refrigerant which is introduced to the first cooling unit.

2. The ozone generating device according to claim 1 wherein the second refrigerant is the liquefied raw material, the liquefied raw material vaporizes into gas, the gas is flown out from the second cooling unit and the gas is used as the material gas.

3. The ozone generating device according to claim 1 further comprising a heat exchanger which performs heat exchange between the second refrigerant and the liquefied raw material and the liquefied raw material which is vaporized by performing heat exchange is the material gas.

4. The ozone generating device according to claim 1 wherein the first refrigerant and the second refrigerant are the same material and the first cooling unit and the second cooling unit are configured to allow the first refrigerant to flow to the second cooling unit and the second refrigerant to flow to the first cooling unit.

5. The ozone generating device according to claim 1 , wherein a discharge gap length of the discharge space at a side of downstream of flow of the material gas is set to be shorter than a discharge gap length of the discharge space at a side of upstream of flow of the material gas, and the second cooling unit is provided at the discharge unit whose discharge gap length is set to be shorter.

6. The ozone generating device according to claim 1 , wherein the discharge unit is separated to be a first discharge unit and a second discharge unit, the first discharge unit and the first cooling unit configure a first ozone generating device, the second discharge unit and the second cooling unit configure a second ozone generating device, and an ozonized gas which is generated by the first ozone generating device is introduced to the second ozone generating device.

7. The ozone generating device according to claim 1 , further comprising an ozone concentrator by which the ozone which is generated is adsorbed to an adsorbent which is cooled by using at least one portion of the liquefied raw material as the cold heat source so as to concentrate the ozone.

Assignees

• Mitsubishi Electric Corp

Inventors

• Nakagawa Yusuke
• Wada Noboru
• Nagayama Takahisa
• Inanaga Yasutaka
• Oinuma Gaku
• Yoshida Mamiko

Classifications

• C02F1/78

  with ozone {(C02F1/4672 takes precedence)} · CPC title

• C01B2201/64

  Oxygen · CPC title

• C01B13/115 Primary

  characterised by the electrical circuits producing the electrical discharge · CPC title

• C01B2201/74

  by liquid · CPC title

• C01B2201/90

  Control of the process · CPC title