Water supply system for aircraft

Patent metadata

Field	Value
Publication number	US-12330974-B2
Application number	US-201917414710-A
Country	US
Kind code	B2
Filing date	Dec 6, 2019
Priority date	Dec 17, 2018
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A water supply system for aircraft that is mounted on an aircraft to supply water to a plurality of water supply outlets in the aircraft. The water supply system for aircraft includes a tank for storing water, a water supply pipe, and an ultraviolet sterilization device. The water supply pipe extends from the tank, branches and is connected to each of the plurality of water supply outlets, and supplies water from the tank to the plurality of water supply outlets. The ultraviolet sterilization device is provided on the water supply pipe close to at least the water supply outlet for drinking water, includes a light-emitting diode emitting ultraviolet light, and sterilizes water supplied to the water supply outlet by irradiating the water with ultraviolet light from the light-emitting diode.

First claim

The invention claimed is:

1. A water supply system for aircraft that is mounted on an aircraft to supply water to a plurality of water supply outlets in the aircraft, the water supply system for aircraft comprising:
a tank for storing water;
a water supply pipe extending from the tank, branching and being connected for supplying water to each of a plurality of water supply outlets for drinking water, and being connected to each of a plurality of water supply outlets for washing hands;
an ultraviolet sterilization device provided in the water supply pipe downstream of the tank and located spaced from the at least one of the plurality of water supply outlets for drinking water, the ultraviolet sterilization device comprising:
a chamber inserted in the water supply pipe;
a filter for filtering the water provided on the downstream side of the ultraviolet sterilization device; and
at least one light-emitting diode emitting ultraviolet light located inside the chamber, and sterilizing water supplied to the at least one water supply outlet for drinking water by irradiating the water with ultraviolet light from the at least one light-emitting diode; and

an ozone water generator provided in the water supply pipe downstream of the tank for generating and supplying ozone concentrated water to the at least one water supply outlet for washing hands provided on the water supply pipe leading to the at least one water supply outlet for washing hands.

2. The water supply system for aircraft according to claim 1 , comprising:
a running water power generator that generates power using water flowing through the water supply pipe,
wherein the ultraviolet sterilization device is driven using power generated by the running water power generator.

3. The water supply system for aircraft according to claim 1 , wherein the at least one light-emitting diode is provided on an inner peripheral surface of the chamber.

4. The water supply system for aircraft according to claim 1 , further comprising a compressed air line connected to the tank for introducing compressed air into the tank, wherein the compressed air line comprises a first line connected to an engine or auxiliary engine of the aircraft for introducing compressed air into the tank, and a second line including an air pump for introducing compressed outside air into the tank.

5. The water supply system for aircraft according to claim 3 , wherein the ultraviolet sterilization device comprises a plurality of light-emitting diodes arranged on the inner surface of the chamber evenly spaced apart and to point towards the center of the chamber to cause multiple reflection from the inner surface made of material that reflects ultraviolet light.

6. A water supply system for aircraft that is mounted on an aircraft to supply water to a plurality of water supply outlets in the aircraft, the water supply system for aircraft comprising:
a tank for storing water;
a water supply pipe extending from the tank for storing water, branching and being connected for supplying water to each of a plurality of water supply outlets for drinking water, and being connected to a toilet bowl cleaning tank;
an ultraviolet sterilization device provided in the water supply pipe downstream of the tank for storing water and located spaced from the at least one of the plurality of water supply outlets for drinking water, the ultraviolet sterilization device comprising:
a chamber inserted in the water supply pipe;
a filter for filtering the water provided on the downstream side of the ultraviolet sterilization device; and
at least one light-emitting diode emitting ultraviolet light located inside the chamber, and sterilizing water supplied to the at least one water supply outlet for drinking water by irradiating the water with ultraviolet light from the at least one light-emitting diode; and

an ozone water generator provided in the water supply pipe downstream of the tank for generating and supplying ozone concentrated water to the toilet bowl cleaning tank provided on the water supply pipe leading to the toilet bowl cleaning tank.

7. The water supply system for aircraft according to claim 1 , further comprising an ozone meter provided downstream of the ozone water generator.

Assignees

• Nikkiso Co Ltd

Inventors

• Nakama Takahiro
• Akutsu Takahiro
• Takigawa Satoko

Classifications

• C02F2303/04

  Disinfection · CPC title

• C02F2201/782

  Ozone generators · CPC title

• C02F2201/3228

  Units having reflectors, e.g. coatings, baffles, plates, mirrors · CPC title

• C02F2201/3227

  Units with two or more lamps · CPC title

• C02F2201/3222

  Units using UV-light emitting diodes [LED] · CPC title