Automated decontamination of complex areas

• US 10,507,256 B2
• Filed: 01/27/2017
• Issued: 12/17/2019
• Est. Priority Date: 01/27/2017
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Park, Shawn Hyunsoo, Peltz, Leora, Wallburg, Andrew Gerhard
• Primary Examiner(s): Joyner, Kevin
• Application Number:
  US15/417,994
• Publication Number:
  US 20180214591A1
• Time in Patent Office: 1,054 Days
• CPC Class Codes: A61L 2/00 Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for contact lenses A61L12/00; atomisers for disinfecting agents A61M; sterilisation of packages or package contents in association with packaging B65B55/00; treatment of water, waste water, sewage or sludge C02F; disinfecting paper D21H21/36; disinfecting devices for water closets E03D; articles having provision for disinfection, see the relevant subclasses for these articles, e.g. H04R1/12
• CPC Class Codes: A61L 2/22 Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/15 Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
• CPC Class Codes: A61L 2202/16 Mobile applications, e.g. portable devices, trailers, devices mounted on vehicles
• CPC Class Codes: A61L 2202/25 Rooms in buildings, passenger compartments
• CPC Class Codes: A61L 9/14 using sprayed or atomised substances including air-liquid contact processes
• CPC Class Codes: B64D 11/00 Passenger or crew accommodation; Flight-deck installations not otherwise provided for
• CPC Class Codes: B64F 5/30 Cleaning aircraft
• CPC Class Codes: Y02T 50/40 Weight reduction

Abstract

Provided are mobile decontamination units and methods of using such units for decontaminating various areas, such as aircraft cabins. A mobile decontamination unit comprises at least one aerosol dispersing nozzle and at least one aerosol directing fan. The nozzle disperses disinfectant in the aerosol form, while the fan directed this aerosol to surfaces being decontaminated. Aerosol dispersing parameters, such the nozzle and fan orientations, dispersing rate, fan speed, and the like, are determined based on area characteristics. Specifically, orientations of different surfaces, temperature, humidity and/or other like characteristics may be considered. Some characteristics may be obtained by the mobile decontamination unit after its deployment in the area, such as using its sensors. Other characteristics, such as area layout, may be preloaded to the mobile decontamination unit prior to its deployment. The dispersing parameters are determined to ensure through decontamination of the surfaces in the area.

Claims

1. A method for decontaminating an area, the method comprising:

deploying a mobile decontamination unit in the area,

the mobile decontamination unit comprising an aerosol dispersing nozzle and an aerosol directing fan;

determining aerosol dispersing parameters for the mobile decontamination unit based on area characteristics;

dispersing a decontaminant within the area using the aerosol dispersing nozzle and in accordance with the aerosol dispersing parameters,

the decontaminant being dispersed in an aerosol form comprising a decontaminant droplets;

directing the decontaminant droplets to surfaces in the area using aerosol directing fan and in accordance with the aerosol dispersing parameters; and

changing orientation of the aerosol directing fan relative to the area, comprising changing orientation of a head portion of the mobile decontamination unit relative to a base portion of the mobile decontamination unit, wherein the head portion comprises the aerosol dispersing nozzle and the aerosol directing fan.

2. The method of claim 1, wherein determining the aerosol dispersing parameters comprises obtaining area characteristics.

3. The method of claim 2, wherein the area characteristics are obtained using a sensor of the mobile decontamination unit.

4. The method of claim 2, wherein the area characteristics are stored in a database of the mobile decontamination unit.

5. The method of claim 2, wherein the area characteristics comprises at least one of humidity, temperature, contaminant type, and orientation of the surfaces in the area.

6. The method of claim 1, wherein determining the aerosol dispersing parameters further comprises changing the area characteristics to a set range.

7. The method of claim 6, wherein changing the area characteristics comprises operating a stationary unit, external to the mobile decontamination unit.

8. The method of claim 7, wherein changing the area characteristics further comprises sending control instructions from the mobile decontamination unit to the stationary unit.

9. The method of claim 7, wherein the stationary unit is a heating-ventilation-air conditioning (HVAC) unit of the area.

10. The method of claim 1, wherein determining the aerosol dispersing parameters is performed remotely from the mobile decontamination unit and transmitted to the mobile decontamination unit.

11. The method of claim 1, further comprising moving the mobile decontamination unit in the area.

12. The method of claim 11, wherein moving the mobile decontamination unit in the area is performed while dispersing the decontaminant.

13. The method of claim 11, wherein moving the mobile decontamination unit in the area is performed automatically based on the area characteristics.

14. The method of claim 1, further comprising changing at least one of orientation of the aerosol dispersing nozzle relative to the area, power of heaters, fan speed, or a dispensing rate.

15. The method of claim 14, wherein changing the aerosol dispersing parameters comprises both changing the orientation of the aerosol dispersing nozzle and changing the orientation of the aerosol directing fan.

16. The method of claim 15, wherein changing both the orientation of the aerosol dispersing nozzle and the orientation of the aerosol directing fan comprises moving the mobile decontamination unit within the area.

17. The method of claim 1, wherein changing orientation of the head portion relative to the base portion comprises at least one of raising the head portion relative to the base portion or rotating the head portion relative to the base portion.

18. The method of claim 1, wherein directing the decontaminant droplets to the surfaces in the area comprises forming a turbulent air flow around the decontaminant droplets using the aerosol directing fan.

19. The method of claim 1, wherein determining the aerosol dispersing parameters comprises determining orientation of at least one of the aerosol dispersing nozzle or the aerosol directing fan based on orientation of the surfaces in the area.

20. The method of claim 1, wherein the area is an aircraft cabin.

21. The method of claim 1, wherein determining the aerosol dispersing parameters is further performed based on decontaminant characteristics.

22. The method of claim 1, wherein determining the aerosol dispersing parameters is performed using a unit controller of the mobile decontamination unit.

23. The method of claim 1, wherein dispersing the decontaminant within the area and directing the decontaminant droplets to surfaces in the area overlap in time.

24. The method of claim 1, wherein determining the aerosol dispersing parameters comprises determining orientation of both the aerosol dispersing nozzle and the aerosol directing fan based on orientation of the surfaces in the area.

25. The method of claim 24, further comprising obtaining the orientation of the surfaces in the area using a camera of the mobile decontamination unit or from a database of the mobile decontamination unit.

26. The method of claim 1, wherein the aerosol dispersing parameters comprise a temperature ramping profile of an air directed by aerosol directing fan.

27. The method of claim 26, wherein the temperature ramping profile is linear.

28. The method of claim 1, further comprising supplying the decontaminant to the mobile decontamination unit while dispersing the decontaminant within the area.