Self cleaning toilet assembly and system

Patent metadata

Field	Value
Publication number	US-10760255-B2
Application number	US-201615289880-A
Country	US
Kind code	B2
Filing date	Oct 10, 2016
Priority date	Jul 15, 2013
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

Toilet assemblies having various embodiments of a cleaning system are described herein which include a toilet assembly and a cleaning system. The toilet assembly has a toilet bowl, a toilet tank, a flush valve, a rim inlet port and a rim flow path (which may be an isolated rim path) extending from an outlet of the flush valve to the rim inlet port. The cleaning system has a reservoir for holding a liquid cleaning agent having an outlet port in fluid communication with the interior space of the reservoir body; a housing to receive the reservoir; a supply conduit in fluid communication with the interior of the reservoir; a flow control device capable of controlling flow through the supply conduit; and a control system activatable by an actuator feature, wherein upon activation of the actuator feature, the control system is adapted to initiate a clean cycle by: operating the flow control device for a first period of time sufficient to deliver a dose of a liquid cleaning agent from the supply conduit to an interior space of the flush valve in a closed position, the flush valve configured for delivery of fluid to the rim inlet port, and operating the flush valve to open the flush valve to introduce flush water to carry the dose of a liquid cleaning agent through the rim inlet port into the toilet bowl.

First claim

We claim:

1. A toilet assembly with a cleaning system, comprising:
(a) the toilet assembly comprising
a toilet bowl defining an interior space,
a toilet tank defining a tank interior,
a flush valve,
a rim inlet port and
an isolated rim flow path extending from an outlet of the flush valve to the rim inlet port, wherein the flush valve is configured to deliver fluid to the rim inlet port of the toilet bowl; and

(b) the cleaning system comprising
a reservoir for holding a liquid cleaning agent having a body defining an interior space and having an outlet port in fluid communication with the interior space of the reservoir;
a housing configured to receive the reservoir;
a supply conduit in fluid communication with an interior of the reservoir and having a first end for receiving fluid from within the reservoir;
a flow control device capable of controlling flow through the supply conduit; and
a control system activatable by an actuator feature, wherein upon activation of the actuator feature, the control system is adapted to initiate a clean cycle that is a deep clean cycle or a quick clean cycle by:
operating the flow control device for a first period of time sufficient to deliver a dose of a liquid cleaning agent from the supply conduit to an interior space of the flush valve in a closed position, the flush valve configured for delivery of fluid to the rim inlet port, and
operating, after the first period of time, the flush valve to open the flush valve to introduce flush water to carry the dose of a liquid cleaning agent through the rim inlet port into the toilet bowl over a second period of time,

wherein the control system operates to close the flush valve for a third period of time after introducing the dose of the liquid cleaning agent and flush water,
wherein, after the flush valve is in a closed position for the third period of time, the control system operates to again open the flush valve to purge an interior of the toilet bowl with new flush water, and
wherein the third period of time in the quick clean cycle is shorter than the third period of time in the deep clean cycle.

2. The toilet assembly according to claim 1 , wherein the third period of time is a holding time where the dose of the liquid cleaning agent dwells in the toilet bowl and wherein the third period of time is configured to allow the dose of the liquid cleaning agent to clean the toilet bowl.

3. The toilet assembly according to claim 2 , wherein in the deep clean cycle, the third period of time is about 5 minutes to about 10 minutes.

4. The toilet assembly according to claim 2 , wherein in the deep clean cycle, the third period of time is configured to allow the dose of the liquid cleaning agent to clean the toilet bowl and to kill germs in the toilet bowl.

5. The toilet assembly according to claim 2 , wherein in the quick clean cycle, the third period of time is about 1 minute.

6. The toilet assembly according to claim 1 , wherein the purge of the interior of the toilet bowl comprises delivering at least about 3 liters of new flush water to the interior of the toilet bowl.

7. The toilet assembly according to claim 1 , wherein, after delivering the dose of the liquid cleaning agent and flush water, the control system operates the flow control device to deliver a second dose of the liquid cleaning agent from the supply conduit to the interior space of the flush valve in the closed position.

8. The toilet assembly according to claim 7 , wherein, after delivering the second dose of the liquid cleaning agent and flush water, the control system operates to open the flush valve after the third period of time to purge an interior of the toilet bowl.

9. The toilet assembly according to claim 1 , wherein the control system operates the flow control device to deliver two doses of the liquid cleaning agent from the supply conduit in the deep clean cycle and one dose of the liquid cleaning agent for the supply conduit in the quick clean cycle.

10. The toilet assembly according to claim 9 , wherein each dose of the liquid cleaning agent is about 24 ml.

11. The toilet assembly according to claim 1 , wherein the flow control device is a liquid supply valve and the cleaning system further comprises a gear motor for the liquid supply valve.

12. The toilet assembly according to claim 11 , wherein the gear motor is configured to lift a supply valve actuator to deliver the dose of the liquid cleaning agent into a dosing chamber.

13. The toilet assembly according to claim 1 , further comprising a lift actuation arm configured to operate the flush valve, wherein the control system operates the lift actuation arm to open the flush valve to introduce the flush water and the dose of the liquid cleaning agent through the rim inlet port into the toilet bowl.

14. The toilet assembly according to claim 1 , further comprising a lift actuation arm configured to operate the flush valve,
wherein the control system further:
operates the lift actuation arm to open the flush valve to deliver the dose of the liquid cleaning agent and flush water over the second period of time,
operates the lift actuation arm to close the flush valve, and
operates the lift actuation arm to open the flush valve after the third period of time to purge an interior of the toilet bowl.

15. The toilet assembly according to claim 1 , wherein the control system operates the flow control device for the first period of time and operates the flush valve to open simultaneously.

16. The toilet assembly according to claim 1 , wherein the control system operates the flush valve to open before delivering the dose of the liquid cleaning agent for the first period of time.

Assignees

• As America Inc

Inventors

• Bucher Christophe
• Grover David
• Barndt Ronald
• Seggio Frank
• Mchale James
• Cicenas Chris
• O'Kelly Matthew
• Rote Scott J
• Harder Cameron
• Helmstetter Christopher
• Wicker Nathan J
• Morris Matthew C

Classifications

• E03D9/037 Primary

  Active dispensers, i.e. comprising a moving dosing element (E03D9/035 takes precedence) · CPC title

• E03D9/035

  Devices connected to the actuation mechanism (E03D9/036 takes precedence) · CPC title

• E03D2201/40

  Devices for distribution of flush water inside the bowl · CPC title

• E03D9/032

  Devices connected to or dispensing into the bowl · CPC title

• E03D5/092

  the flushing element, e.g. siphon bell, being actuated through a lever · CPC title