Decontamination and sterilization device with flexible enclosing cover using plasma and reactive gas

Patent metadata

Field	Value
Publication number	US-9849323-B2
Application number	US-201615378527-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Dec 24, 2015
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A device for removing toxic or harmful materials from an inside sealed by a sealed-type flexible enclosing cover, wherein the contaminated surface of the subject of decontamination is covered with the enclosing cover and a reactive gas is introduced thereto, and particularly to a decontamination and sterilization device, wherein a plasma generator is fixed to a enclosing cover and a plasma gas containing an active radical generated from the plasma generator is introduced to the inside sealed by the enclosing cover together with a reactive gas having a hydroxyl group such as hydrogen peroxide (H 2 O 2 ), water (H 2 O), or an alcohol (C n H 2n+1 OH) to thus increase the production of a reactive radical, whereby the plasma and the reactive gas are intensively applied to the inside sealed by the enclosing cover, thus increasing the contact with contaminants and realizing more efficient decontamination.

First claim

What is claimed is:

1. A decontamination, and sterilization device comprising:
an enclosing cover composed of a non-conductive flexible material and configured to cover and seal a portion of a surface of a subject of decontamination contaminated with a chemical weapon or a biological weapon, without coming into contact with the surface of the subject of decontamination; and
a plurality of reactive decontamination gas generators spaced apart from each other by a predetermined distance and attached on the surface of the enclosing cover and configured such that a plasma gas and a reactive gas for producing an active radical are simultaneously or independently sprayed to an inside sealed by the enclosing cover via a spray outlet of each of the reactive decontamination gas generators,
wherein each of the reactive decontamination gas generators includes an electrode structure which includes at least one internal electrode and at least one external electrode and is configured such that the at least one internal electrode receives external air via a first inflow path formed at one end thereof to generate plasma and is housed in the at least one external electrode, and
wherein the enclosing cover is used as a structural unit such that individual structural units are connected to each other using connectors formed at edges of individual enclosing covers thereof.

2. The decontamination and sterilization device of claim 1 , wherein the at least one internal electrode communicates with a second inflow path through which the reactive gas flows, so that the reactive gas is fed into the at least one internal electrode.

3. The decontamination and sterilization device of claim 2 , wherein the at least one internal electrode is provided in a form of a tube having a cylindrical shape or a tetragonal prismatic shape.

4. The decontamination and sterilization device of claim 1 , wherein the at least one external electrode is configured to include a dielectric formed around an inner surface of the at least one external electrode so as to come into contact therewith.

5. The decontamination and sterilization device of claim 1 , wherein a dielectric material is provided between the at least one internal electrode and the at least one external electrode and includes at least one selected from among BaTiO 3 , TiO 2 , glass, and ceramic.

6. The decontamination and sterilization device of claim 1 , wherein the electrode structure is configured such that a plurality of internal electrodes and a plurality of external electrodes are alternately arranged, wherein each of the internal electrodes is of a metal tube-type.

7. The decontamination and sterilization device of claim 1 , wherein the electrode structure is configured to include an insulation material formed around an outer surface of an external electrode located at an outermost position in order to prevent current leakage.

8. The decontamination and sterilization device of claim 1 , wherein needle-shaped electrodes are formed at a position in which the at least one internal electrode and the at least one external electrode are disposed to face each other.

9. The decontamination and sterilization device of claim 1 , wherein the enclosing cover includes an opening/closing-type fixing jig for fixing each of the reactive decontamination gas generators, and the fixing jig enables one end of the reactive decontamination gas generator to be removably attached to the enclosing cover in a screw-fastening manner or a one-touch coupling manner.

10. The decontamination and sterilization device of claim 1 , wherein each of the reactive decontamination gas generators includes a hollow spacing panel attached thereto so as to prevent the spray outlet from coming into contact with the surface of the subject of decontamination.

11. The decontamination and sterilization device of claim 1 , wherein the first inflow path includes a humidity controller for controlling a relative humidity of external air that is introduced into each of the reactive decontamination gas generators.

12. The decontamination and sterilization device of claim 1 , wherein the enclosing cover includes an air ventilation fan for circulating air therein.

13. The decontamination and sterilization device of claim 1 , wherein the enclosing cover further includes a fixing member at an edge thereof so as to prevent blowing thereof due to a wind, whereby the enclosing cover is fixed to or is kept in close contact with the surface of the subject of decontamination.

14. The decontamination and sterilization device of claim 1 , wherein the reactive gas includes at least one selected from among hydrogen peroxide (H 2 O 2 ), water vapor (H 2 O), helium, argon, acetone, oxygen, compressive air, and alcohol (C n H 2n+1 OH).

Assignees

• Agency Defense Dev

Inventors

• Park Myung-Kyu
• Jung Hee-Soo

Classifications

• A61L2/208 Primary

  Hydrogen peroxide · CPC title

• A61L2202/11

  Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps · CPC title

• B01J2219/0826

  essentially linear · CPC title

• B01J2219/0894

  Processes carried out in the presence of a plasma · CPC title

• A61L2/14

  Plasma, i.e. ionised gases · CPC title