Valve disinfecting method

Patent metadata

Field	Value
Publication number	US-9683352-B2
Application number	US-201615010312-A
Country	US
Kind code	B2
Filing date	Jan 29, 2016
Priority date	Jun 22, 2012
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A method of performing a cleaning cycle for a water supply system having a valve. The method includes determining whether the cleaning cycle is necessary in a central controller located remotely from the water supply system; and when cleaning is necessary, sending a signal from the central controller to a local controller located within the water supply system to activate a heating element within the water supply system to heat an internal waterway of the water supply system to a temperature configured to clean the internal waterway.

First claim

What is claimed is:

1. A method of performing a cleaning cycle for a water supply system for washing, showering, or bathing, the water supply system having a valve for controlling the flow of water therethrough, the method comprising:
determining in a central controller whether the cleaning cycle is necessary, wherein the central controller is located remotely from the water supply system; and
when cleaning is necessary, sending a signal from the central controller to a local controller located within the water supply system to activate a heating element within the water supply system to heat an internal waterway of the water supply system to a temperature configured to clean the internal waterway;
wherein the local controller can determine whether the cleaning cycle is necessary and activate the heating element to heat the internal waterway of the water supply system independently of the central controller.

2. The method of claim 1 , further comprising:
monitoring a heating level in the internal waterway during the cleaning cycle using a sensor; and
providing feedback from the sensor to the local controller regarding the heating level.

3. The method of claim 2 , further comprising deactivating the heating element once the heating level reaches the temperature.

4. The method of claim 3 , wherein the local controller prevents the valve from being opened until the heating level reaches a safe operating temperature.

5. The method of claim 2 , further comprising deactivating the heating element after the heating level reaches the temperature for a period of time.

6. The method of claim 1 , wherein the central controller is programmable and reprogrammable through a user interface to vary the schedule of the cleaning cycles.

7. The method of claim 1 , wherein the heating element is located in a body of the valve and the internal waterway is part of the valve, and wherein the local controller is coupled to the body of the valve.

8. The method of claim 1 , wherein a body of the valve has a thermal mass that allows the heating element to heat the internal waterway of the water supply system to the temperature using no more than 50 watts.

9. The method of claim 1 , wherein the heating element is located in a body of the water supply system that is located outside of the valve between the valve and an outlet of the water delivery device.

10. The method of claim 1 , further comprising:
providing a plurality of water supply systems with each water supply system having a local controller located within the associated water supply system, a heating element located therein, and an internal waterway located therein;
determining in the central controller whether a cleaning cycle is necessary in each of the plurality of water supply systems, wherein the central controller is located remotely from each water supply system of the plurality of water supply systems; and
upon determining that a cleaning is necessary, sending a signal from the central controller to the local controller of each water supply system to be cleaned to activate the associated heating element to heat the associated internal waterway to the temperature.

11. The method of claim 1 , wherein the water supply system includes a user interface that is separate from the central controller and is configured to activate the heating element to clean the internal waterway to an input temperature for an input period of time.

12. A method of performing a cleaning cycle for a water supply system for washing, showering, or bathing, the water supply system having a valve for controlling the flow of water therethrough, the method comprising:
using a controller to determine whether the cleaning cycle is necessary, wherein the controller is associated with the water supply system;
using the controller to activate a heating element within the water supply system for a time to heat a water contacting surface within the water supply system to a temperature configured to clean the water contacting surface after determining that a cleaning is necessary; and
using the controller to prevent the valve of the water supply system from being opened during the time that the heating element is activated.

13. The method of claim 12 , further comprising:
monitoring a heating level of the water contacting surface during the cleaning cycle using a sensor; and
providing feedback from the sensor to the controller regarding the heating level.

14. The method of claim 12 , wherein the controller disables the valve for a period of time after the heating element has been deactivated to allow the water contacting surface to cool down to a safe temperature for use.

15. The method of claim 12 , wherein the water supply system is selected from the group consisting of a faucet, a shower head, a plumbing fitting, a plumbing fixture, a water tap, and a tub spout.

16. A method of performing a cleaning cycle for a water supply system for washing, showering, or bathing, the water supply system having a valve for controlling the flow of water therethrough, the method comprising:
activating a heating element within the water supply system to heat a water contacting surface within the water supply system to a temperature configured to clean the water contacting surface;
deactivating the heating element; and
preventing the valve from being opened for a period of time after deactivating the heating element to allow the water contacting surface to cool down to a safe temperature for use.

17. The method of claim 16 , wherein the temperature of the water contacting surface is monitored using a temperature sensor.

18. The method of claim 17 , further comprising determining in a controller whether the cleaning cycle is necessary, wherein the controller is associated with the water supply system and upon a determination that cleaning is necessary, the controller activates the heating element, and wherein the controller disables the valve for the period of time after deactivating the heating element.

19. The method of claim 18 , wherein the controller communicates with the temperature sensor and enables/disables the valve based on the temperature of the water contacting surface.

20. The method of claim 16 , wherein the water supply system includes a user interface that is configured to activate the heating element to clean the internal waterway to an input temperature for an input period of time.

Assignees

• Kohler Mira Ltd

Inventors

• Peel Kevin T

Classifications

• F16K49/002

  Electric heating means · CPC title

• F16K11/20

  operated by separate actuating members (with one plug turning in another F16K11/12) · CPC title

• Y10T137/6606

  With electric heating element · CPC title

• B05B1/24

  incorporating means for heating the liquid or other fluent material, e.g. electrically · CPC title

• G05D23/1858

  by varying the mixing ratio of fluids having different temperatures · CPC title