Ozone generator in liquids

• US 5,154,895 A
• Filed: 02/27/1991
• Issued: 10/13/1992
• Est. Priority Date: 03/03/1990
• Status: Expired due to Term

• Current Assignee: Ecoald Corp.
• Original Assignee: Jae-Duk Moon, Samsung Electronics Co. Ltd.
• Inventors: Moon, Jae-Duk
• Primary Examiner(s): Hunt, Brooks H.
• Assistant Examiner(s): Jenkins, Daniel J.
• Application Number:
  US07/661,203
• Time in Patent Office: 594 Days
• Field of Search: 422/186.07, 422/186.15, 422/186.21, 422/186.16
• US Class Current: 422/186.07
• CPC Class Codes: A23L 3/3409 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
• CPC Class Codes: A23L 3/358 Inorganic compounds
• CPC Class Codes: B01J 19/088 giving rise to electric discharges for heating purposes H05B7/00; for the production of ozone C01B13/11, H01T19/00
• CPC Class Codes: C01B 13/11 by electric discharge
• CPC Class Codes: C01B 2201/22 Constructional details of the electrodes
• CPC Class Codes: C01B 2201/24 Composition of the electrodes
• CPC Class Codes: C01B 2201/70 Cooling of the discharger; Means for making cooling unnecessary
• CPC Class Codes: C02F 1/4672 by electrooxydation
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C25B 1/13 Ozone
• CPC Class Codes: C25B 9/17 Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
• CPC Class Codes: Y02E 60/36 Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

This invention discloses an ozone generator having a simple structure and little mechanical trouble, whereby ozone gas is generated directly in water or stagnant solutions having a high electric conductivity without any blower or bubble generating device, including one or more pairs of electrodes being submerged in liquids, the electrodes being made with metals resistant to oxidation such as platinum, the shape of said electrodes being formed in a strip line type and on an insulator substrate, the spacing between said electrodes being set to be of 0.02 to 1 mm, a square wave voltage with positive and negative pulses are supplied to said electrodes, thereby build-up of impurity in liquids to said electrodes being prevented, thus high concentration of ozone O₃ generated effectively by combining O with O₂ produced through dissociation of water molecule in liquids without the danger of ozone gas leakage in the air, thus favorably applicable for the manufacturing process of foods and pharmaceutical chemicals, storage of agricultural products, sterilization and disinfection.

Claims

1. An ozone generator in liquids, comprising:

one or more pairs of stripline electrodes formed on insulator substrates positioned within water and solutions, and

means for supplying to said electrodes, an alternating square wave pulse voltage for generating a large electric field between surfaces of each electrode of said pair of electrodes,

said electrodes of said pair of electrodes being oppositely positioned within the water or solutions, for dissociating molecules of the water or solutions to produce ozone gas.

2. The ozone generator of claim 1, wherein the square wave pulse voltage has pause times.

3. The ozone generator of claim 1, wherein both sides of the electrodes are formed in a disk mesh shape.

4. The ozone generator of claim 1, wherein the inter-electrode spacing between the electrodes is in the range of 0.01 to 2 mm.

5. The ozone generator of claim 3, wherein the inter-electrode spacing between the electrodes is in the range of 0.01 to 2 mm.

6. An ozone generator, comprising:

means for providing an electrically insulating substrate;

a plurality of spaced-apart stripline electrodes formed on said insulating substrate means;

a container for channeling liquids across said plurality of electrodes; and

means for sequentially applying across said electrodes pulses of positive and negative potentials for generating a large electric field between surfaces of each of said electrodes;

said large electric field dissociating molecules of said liquids for producing ozone gas.

7. The ozone generator of claim 6, further comprised of an insulator serving as a substrate for said strip lines.

8. The ozone generator of claim 6, wherein said electrodes comprise:

a plurality of porous substrates; and

electrically conducting material disposed on said porous substrates.

9. The ozone generator of claim 6, further comprised of inter-electrode spacing between said plurality of electrodes being within the range of 0.01 to 2.0 millimeters.

10. The ozone generator of claim 7, further comprised of:

a plurality of porous substrates; and

electrically conducting material disposed on said porous substrates.