# US 9,694,397 B2 · Method for the dynamic cleaning of water lines in a vehicle and device for the implementation thereof

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- Number: US 9,694,397 B2
- Document ID: US9694397B2
- Status: Granted
- Kind: B2
- Application number: 14/123,767
- Filed: 2012-06-05
- Published: 2014-08-21
- Granted: 2017-07-04
- Earliest claimed: 2011-06-06
- Assignees: Prodose
- Applicants: Morou Boukari
- Inventors: Morou Boukari
- Web page: https://patentgrep.com/patent/US9694397B2

## CPC

- B08B 9/0321: {using pressurised, pulsating or purging fluid (E04F17/126 takes precedence)}
- B08B 3/12: by sonic or ultrasonic vibrations
- B08B 9/032: by the mechanical action of a moving fluid, e.g. by flushing (B08B9/04 takes precedence {; by fluid jets mounted on cleaning devices B08B9/0433})
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL

## Abstract

The invention relates to a method for the dynamic cleaning of supply ducts for drinking water in a vehicle (A), said method being noteworthy in that it consists in creating a shockwave (0) in the duct (210) to be cleaned. The invention also relates to a device for implementing said method. Applications: cleaning of water supply ducts in vehicles including aircraft.

## Claims

### Claim 1

In a vehicle (A) having supply ducts for drinking water, a method for dynamic cleaning of a supply duct for drinking water of the vehicle (A), comprising creating a shockwave (0) in the duct to be cleaned, the supply duct having a first end and a second end;
the method comprising:
(a) partially filling a volume with a liquid,
(b) filling the volume that is not occupied by the liquid with gas under pressure,
(c) releasing the liquid through a bottleneck communicating with the first end of said duct to be cleaned the second end of said duct being open while maintaining the pressure, the liquid being displaced through the bottleneck by the gas under pressure in order to empty the volume of liquid,
in such a way as:
to create an accelerated displacement of the liquid from the volume to the supply duct in a first step, create a mixture of gas and liquid in a second step, and create an accelerated displacement of the mixture of gas and of liquid that is created in a second step, and
to generate a shockwave (0) once the volume is emptied of the liquid, the shockwave propagating through the mixture.

### Claim 2 (depends on 1)

Method according to claim 1, further comprising creating a fluid by mixing a liquid with gas under pressure and in propagating said shockwave in said fluid.

### Claim 3 (depends on 1)

Method according to claim 1, further comprising heating the liquid that fills the volume.

### Claim 4 (depends on 1)

Method according to claim 1, wherein the vehicle (A) is an aircraft.

### Claim 5 (depends on 1)

Method according to claim 1, wherein said bottleneck is created by a difference in diameter between the volume and the supply duct.

### Claim 6 (depends on 1)

Method according to claim 1, wherein said volume is a water tank of the vehicle (A).

### Claim 7 (depends on 1)

Method according to claim 1, wherein said vehicle (A) has a network of ducts, and said volume is an independent tank, the independent tank being connected to the network of ducts of the vehicle (A).