System for pipe treatment

Patent metadata

Field	Value
Publication number	US-10022755-B2
Application number	US-201414165781-A
Country	US
Kind code	B2
Filing date	Jan 28, 2014
Priority date	Jul 28, 2011
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A pipe treatment system for a supply unit is provided. The pipe treatment system comprises a fresh water inlet pipe, a tap for fresh water, a controllable tap valve, and a control device for the pipe treatment control system. The controllable tap valve is arranged between the fresh water inlet pipe and the tap for fresh water. The control device for the pipe treatment control system is connected to the controllable tap valve so as to place the controllable tap valve in a pipe treatment state when there is a pipe treatment signal at the control device, so as to provide a more reliable pipe treatment system, for example for disinfection or descaling.

First claim

What is claimed is:

1. A pipe treatment system for a supply unit, the pipe treatment system comprising:
a fresh water inlet pipe;
a tap for fresh water;
a controllable tap valve arranged between the fresh water inlet pipe and the tap for fresh water;
a control device for controlling the pipe treatment system, connected to the controllable tap valve to place the controllable tap valve in a pipe treatment state based on a pipe treatment signal at the control device;
a bypass pipe arranged parallel to at least a partial length of the fresh water inlet pipe; and
a controllable bypass valve arrangement configured and controllable in such a way that a liquid feed is bypassed through the bypass pipe at the partial length of the fresh water inlet pipe,
wherein the control device for controlling the pipe treatment system is connected to the controllable bypass valve arrangement to place the controllable bypass valve arrangement in a pipe treatment state when the pipe treatment signal is at the control device, so as to completely bypass the liquid feed through the bypass pipe at the partial length of the fresh water inlet pipe;
wherein the bypassed partial length of the fresh water inlet pipe is hermetically sealed in the pipe treatment state such that no liquid can enter the bypassed partial length of the fresh water inlet pipe;
wherein the pipe treatment system comprises a plurality of taps for fresh water and a plurality of controllable tap valves, each one of the plurality of controllable tap valves being arranged between the fresh water inlet pipe and a correspondingly associated one of the plurality of taps for fresh water, the control device comprising a plurality of subordinate control devices, one of the plurality of subordinate control devices being assigned to each one of the plurality of taps for fresh water, a respective controllable tap valve being connected to and controllable by a respective subordinate control device such that the respective controllable tap valve is opened for a duration and to a degree in accordance with an opening pattern;
wherein the plurality of subordinate control devices are configured to take into account a relative position of the tap and/or the inlet length thereof;
wherein the controllable bypass valve arrangement comprises a first bypass valve and a second bypass valve, wherein the first bypass valve is arranged at a branch point, and the second bypass valve is arranged at a connection point of the fresh water inlet pipe;
wherein the pipe treatment system further comprises a water filter arranged between the first bypass valve and the second bypass valve;
wherein the fresh water supply pipe is configured such that water branches into the bypass pipe at the branch point and is guided back into the fresh water supply pipe at the connection point, to be supplied to corresponding taps via corresponding inlet branches; and
wherein the first bypass valve and the second bypass valve hermetically seal a partial length of the fresh water supply pipe between the branch point and the connection point during a disinfection process such that no disinfection agent can reach the water filter by diffusion.

2. The pipe treatment system according to claim 1 , wherein the pipe treatment system further comprises a ventilation valve, the ventilation valve being arranged in a branch of the fresh water inlet pipe, the branch of the fresh water inlet pipe arranged parallel to a branch of the fresh water inlet pipe in which branch the controllable tap valve is positioned, the ventilation valve being configured for bleeding of the fresh water inlet pipe.

3. The pipe treatment system according to claim 1 , wherein the control device comprises a subordinate control device, which is allocated to the tap for fresh water, the controllable tap valve being connected to and controllable by the subordinate control device in such a way that the controllable tap valve is opened for a particular duration and to a particular degree, in accordance with an opening pattern.

4. The pipe treatment system according to claim 1 , wherein the tap for fresh water comprises a controllable temperature-control device, the temperature-control device being connected to and controllable by the control device in such a way that the temperature-control device is deactivated based on the pipe treatment signal.

5. The pipe treatment system according to claim 1 , wherein the control device comprises a logging device, which displays a progression of control signals over time.

6. The pipe treatment system according to claim 1 , wherein at least one of the first bypass valve, the second bypass valve and the controllable tap valve comprises a valve-state detection means, which is connected to the control device, the control device comprising a logging unit which displays a progression of valve states over time.

7. The pipe treatment system according to claim 1 , wherein the control device has a stored pipe treatment sequence, which automatically controls the progression over time of valve opening degrees of the controllable bypass valve arrangement and the controllable tap valve when there is a pipe treatment signal.

8. The pipe treatment system according to claim 1 , wherein the pipe treatment system comprises a detection means, which is configured to detect the presence of a pipe treatment agent in the fresh water inlet pipe, and to transmit the pipe treatment signal to the control device in response to the presence of a pipe treatment agent.

9. The pipe treatment system according to claim 1 , wherein the pipe treatment system is configured for a pipe treatment with at least one of a disinfection agent and a descaling agent.

10. An aircraft, comprising:
at least one supply unit from the group consisting of a kitchen installation, a toilet installation and a bath installation;
a pipe treatment system for the at least one supply unit, the pipe treatment system including:
a fresh water inlet pipe;
a tap for fresh water;
a controllable tap valve arranged between the fresh water inlet pipe and the tap for fresh water;
a control device for controlling the pipe treatment system connected to the controllable tap valve to place the tap valve in a pipe treatment state based on a pipe treatment signal at the control device;
a bypass pipe arranged parallel to at least a partial length of the fresh water inlet pipe; and
a controllable bypass valve arrangement configured and controllable in such a way that a liquid feed is bypassed through the bypass pipe at the partial length of the fresh water inlet pipe,

wherein the control device for controlling the pipe treatment system is connected to the controllable bypass valve arrangement to place the controllable bypass valve arrangement in a pipe treatment state when the pipe treatment signal is at the control device, so as to completely bypass the liquid feed through the bypass pipe at the partial length of the fresh water inlet pipe;
wherein the bypassed partial length of the fresh water inlet pipe is hermetically sealed in the pipe treatment state such that no liquid can enter the bypassed partial length of the fresh water inlet pipe;
wherein the pipe treatment system comprises a plurality of taps for fresh water and a plurality of controllable tap valves, each one of the plurality of controllable tap valves being arranged between the fresh water inlet pipe and a correspondingly associated one of the plurality of taps for fresh water, the control device comprising a plurality of subordinate control devices, one of the plurality of subordinate control devices being assigned to each one of the plurality of taps for fresh water, a respective controllable tap valve being connected to and control

Assignees

• Airbus Operations Gmbh

Inventors

• Reiss Matthias
• Becker Ole

Classifications

• B08B9/032 Primary

  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}) · CPC title

• F24D19/0092

  Devices for preventing or removing corrosion, slime or scale · CPC title

• B64D11/04

  Galleys · CPC title

• B08B9/0325

  Control mechanisms therefor · CPC title

• E03B7/006

  Arrangements or methods for cleaning or refurbishing water conduits · CPC title