Reactive oxygen species (ROS) enhanced antibacterial light system

Patent metadata

Field	Value
Publication number	US-11911527-B2
Application number	US-202117184913-A
Country	US
Kind code	B2
Filing date	Feb 25, 2021
Priority date	Aug 26, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A sanitization system for an aircraft cabin may comprise: a cabin of an aircraft; a light system including a lighting unit configured to emit an electromagnetic radiation output between 300 and 430 nanometers (“nm”); an external reactive oxygen species (ROS) generator in fluid communication with the cabin, wherein the sanitization system is configured to disinfect a target area of the cabin by targeting the target area with the electromagnetic radiation output and the ROS.

First claim

What is claimed is:

1. A sanitization system for an aircraft cabin, the sanitization system comprising:
a passenger service unit comprising a light system, the light system comprising:
a first light-emitting diode (LED) configured to emit a first electromagnetic radiation output between 600 and 740 nm,
a second LED configured to emit a second electromagnetic radiation output between 500 and 565 nm, and
a third LED configured to emit a third electromagnetic radiation output between 390 and 420 nm, wherein a relative intensity output is controlled by blending the first electromagnetic radiation output, the second electromagnetic radiation output, and the third electromagnetic radiation output to emit a target color from the light system; and

an external reactive oxygen species (ROS) generator configured to be in fluid communication with the aircraft cabin, wherein the sanitization system is configured to disinfect a target area of the aircraft cabin by targeting the target area with the third electromagnetic radiation output and the external ROS generator, wherein the light system is a full color lighting system.

2. The sanitization system of claim 1 , wherein an ROS produced by the external ROS generator is hydrogen peroxide or ozone.

3. The sanitization system of claim 2 , wherein the ROS is an aerosolized hydrogen peroxide.

4. The sanitization system of claim 1 , further comprising an air handler configured to be in fluid communication with the aircraft cabin, wherein the external ROS generator is in fluid communication with the air handler.

5. The sanitization system of claim 1 , further comprising an air management system, the air management system including the external ROS generator.

6. A sanitization system for an aircraft, the sanitization system comprising:
a passenger service unit comprising a lighting unit, the lighting unit including a first light, a second light, and a third light;
an external reactive oxygen species (ROS) generator;
a controller in operable communication with the lighting unit and the external ROS generator, the controller operable to:
controlling a relative intensity output of the lighting unit by blending a first electromagnetic radiation output of the first light of the lighting unit, a second electromagnetic radiation output of the second light of the lighting unit, and a third electromagnetic radiation output of the third light of the lighting unit to emit a target color from the lighting unit;
command the first light in the lighting unit to emit an electromagnetic radiation output between 390 nanometers (“nm”) and 430 nm;
command the external ROS generator to dispense a ROS into a cabin of the aircraft; and
command the first light and the external ROS generator to target a desired target area, wherein a combination of the external ROS generator and the electromagnetic radiation output produce a synergistic effect with respect to inactivation of a virus.

7. The sanitization system of claim 6 , wherein the controller is further operable to determine the desired target area for bacterial or viral disinfection.

8. The sanitization system of claim 6 , further comprising an air handling unit, the external ROS generator disposed in the air handling unit.

9. The sanitization system of claim 6 , wherein the electromagnetic radiation output is about 405 nm.

10. An aircraft cabin and the sanitization system of claim 6 , wherein the lighting unit and the external ROS generator are configured to disinfect a portion of the aircraft in response to targeting the desired target area together.

11. The sanitization system of claim 6 , wherein:
the second light is configured to emit the first electromagnetic radiation output between 600 and 740 nm, and
the third light is configured to emit the second electromagnetic radiation output between 500 and 565 nm.

12. An aircraft, comprising:
a cabin having a row of seats;
a passenger service unit having a light assembly for the row of seats, the light assembly including a first light configured to emit a first electromagnetic radiation output between 390 and 430 nanometers (“nm”), wherein a relative intensity output is controlled by blending the first electromagnetic radiation output, a second electromagnetic radiation output from a second light of the light assembly, and a third electromagnetic radiation output of a third light of the light assembly to emit a target color from the light assembly;
an external reactive oxygen species (ROS) generator configured to dispense an aerosolized ROS into the cabin proximate the row of seats, wherein a first direction of the first electromagnetic radiation output is configured to intersect a second direction of the aerosolized ROS, wherein a combination of the external ROS generator and the first electromagnetic radiation output produce a synergistic effect with respect to inactivation of a virus.

13. The aircraft of claim 12 , wherein the aerosolized ROS comprises one of hydrogen peroxide or ozone.

14. The aircraft of claim 12 , further comprising an air management system, the external ROS generator being integrated within the air management system.

15. The aircraft of claim 14 , wherein the air management system includes an air handling unit, the external ROS generator in fluid communication with the air management system.

16. The aircraft of claim 12 , wherein the first electromagnetic radiation output is about 405 nm.

17. The aircraft of claim 12 , wherein:
the second light is configured to emit the second electromagnetic radiation output between 600 and 740 nm, and
the third light configured to emit the third electromagnetic radiation output between 500 and 565 nm.

Assignees

• Be Aerospace Inc

Inventors

• Tilmont Daniel
• Johannessen Eric
• Edquist John

Classifications

• A61L2103/75

  Room floors or walls · CPC title

• A61L2/10 Primary

  Ultraviolet [UV] radiation · CPC title

• A61L2/084

  Visible light · CPC title

• A61L2/22

  Phase substances, e.g. smokes or aerosols · CPC title

• A61L2/26

  Accessories · CPC title