Decontamination apparatus and method using an activated cleaning fluid mist

• US 7,008,592 B2
• Filed: 11/01/2001
• Issued: 03/07/2006
• Est. Priority Date: 05/06/1999
• Status: Expired due to Term

• Current Assignee: TOMI Environmental Solutions, Inc.
• Original Assignee: Intecon Systems, Inc.
• Inventors: Sias, Ralph M., Pierce, J. Michael, Guerrero, Fernando, Sias, Heath E., Montulli, Louis, Diniz, Stanley J.
• Primary Examiner(s): JASTRZAB, KRISANNE MARIE
• Application Number:
  US10/003,592
• Publication Number:
  US 20030035754A1
• Time in Patent Office: 1,587 Days
• Field of Search: 134/200, 134/201, 422/121, 422/186.04, 422/186, 422/292, 422/29, 422/28, 422/22
• US Class Current: 422/28
• CPC Class Codes: A61L 2/14 Plasma, i.e. ionised gases
• CPC Class Codes: A61L 2/208 Hydrogen peroxide
• CPC Class Codes: A61L 2/22 Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
• CPC Class Codes: A61L 2209/22 Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning
• CPC Class Codes: A61L 9/145 air-liquid contact processes, e.g. scrubbing
• CPC Class Codes: A61L 9/22 Ionisation
• CPC Class Codes: B08B 5/02 Cleaning by the force of jets, e.g. blowing-out cavities airguns or nozzles per se B05B1/005
• CPC Class Codes: B08B 7/00 Cleaning by methods not provided for in a single other subclass or a single group in this subclass

Abstract

Decontamination is achieved by producing an activated cleaning fluid mist using a decontamination apparatus having a source of a cleaning fluid, a mist generator having an input flow of the cleaning fluid and an output flow of a mist of the cleaning fluid at substantially one atmosphere ambient pressure, and an activator positioned to activate the mist of the cleaning fluid to produce the activated cleaning fluid mist wherein atoms of the cleaning fluid are activated. The activated cleaning fluid mist is contacted to a location to be decontaminated.

Claims

1. A decontamination apparatus comprising:

a source of a cleaning fluid;

a mist generator having an input flow of the cleaning fluid and an output flow of a mist of the cleaning fluid at substantially one atmosphere ambient pressure; and

an activator positioned to activate the mist of the cleaning fluid to produce an activated cleaning fluid mist including activatable species excited to an ion, plasma or free radical state, wherein the activator produces activating energy selected from the group consisting of electric energy and photonic energy.

2. The apparatus of claim 1, wherein the source of the cleaning fluid comprises a source of hydrogen peroxide.

3. The apparatus of claim 1, wherein the source of the cleaning fluid comprises a source of an activatable species from the group consisting of hydrogen peroxide, peracetic acid, sodium percarbonate, and gluteraldehyde.

4. The apparatus of claim 1, wherein the source of the cleaning fluid further comprises a source of a promoting species selected from the group consisting of ethylenediaminetetraacetate, isopropyl alcohol, citric acid, lactic acid, and oxalic acid, and mixtures thereof.

5. The apparatus of claim 1, wherein the source of the cleaning fluid further comprises a source of a promoting species selected from the group consisting of an alcohol, and enzyme, a fatty acid, an acid, and a chelating agent, and mixtures thereof.

6. The apparatus of claim 1, wherein the mist generator comprises of nebulizer.

7. The apparatus of claim 1, wherein the mist generator comprises a spray nozzle.

8. The apparatus of claim 1, wherein the activator produces activating energy selected from the group consisting of an AC electric field, an AC arc, a DC electric field, a pulsed DC electric field, a DC arc, an electron beam, an ion beam, a microwave beam, a radio frequency beam, and an ultraviolet beam.

9. The apparatus of claim 1, wherein the activator includes a tuner that tunes the activating energy.

10. The apparatus of claim 1, wherein the mist generator and the activator are disposed proximally, so that the activator activates the mist of the cleaning fluid as it leaves the mist generator.

11. The apparatus of claim 1, wherein the activator is located remotely from the mist generator.

12. The apparatus of claim 1, wherein the apparatus further includes an enclosure into which the mist of the cleaning fluid is directed by the mist generator.

13. The apparatus of claim 1, wherein the apparatus has no enclosure into which the mist is directed by the mist generator.

14. A method for performing decontamination, comprising the steps of producing an activated cleaning fluid mist including activatable species excited to an ion, plasma or free radical state using activating energy selected from the group consisting of electric energy and photonic energy, wherein at least a portion of the activated cleaning fluid mist is in an activated state of substantially one atmosphere ambient pressure;

and

contacting the activated cleaning fluid mist to a location to be decontaminated.

15. The method of claim 14, wherein the decontamination apparatus further includes an enclosure, and wherein the step of contacting occurs within the enclosure.

16. The method of claim 14, wherein the step of contacting occurs within an enclosed space.

17. The method of claim 14, wherein the step of contacting occurs in an unenclosed space.

18. The method of claim 14, wherein the step of producing includes the step of:

providing a decontamination apparatus comprising;

a source of a cleaning fluid,

a mist generator having an input flow of the cleaning fluid and an output flow of a mist of the cleaning fluid at substantially one atmosphere ambient pressure, and

an activator positioned to activate the mist of the cleaning fluid to produce the activated cleaning fluid mist.