Dishwasher spray fill

• US 10,335,012 B2
• Filed: 10/19/2015
• Issued: 07/02/2019
• Est. Priority Date: 10/19/2015
• Status: Active Grant

• Current Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Original Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Inventors: Poyner, Dennis A., Montgomery, Mark D.
• Primary Examiner(s): Kornakov, Mikhail
• Assistant Examiner(s): Coleman, Ryan L.
• Application Number:
  US14/886,667
• Publication Number:
  US 20170105596A1
• Time in Patent Office: 1,352 Days
• Field of Search: None
• CPC Class Codes: A47L 15/0023 Water filling A47L15/4244 takes precedence
• CPC Class Codes: A47L 15/16 with rigidly-mounted spraying devices
• CPC Class Codes: A47L 15/4204 Flat filters
• CPC Class Codes: A47L 15/4208 Arrangements to prevent clogging of the filters, e.g. self-cleaning
• CPC Class Codes: A47L 15/4217 Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
• CPC Class Codes: A47L 15/4278 Nozzles
• CPC Class Codes: A47L 2401/09 Water level
• CPC Class Codes: A47L 2401/12 Water temperature
• CPC Class Codes: A47L 2501/01 Water supply, e.g. opening or closure of the water inlet valve
• CPC Class Codes: A47L 2501/03 Water recirculation, e.g. control of distributing valves for redirection of water flow

Abstract

Provided are systems, methods, and apparatus for spraying water in a dishwasher. A dishwasher may include a wash chamber and at least one dish rack. The dishwasher may include a water inlet selectively connected to a dish spray device, which may connect a dish spray conduit with the wash chamber. The dish spray device may be oriented towards the at least one dish rack, such that the spray device may be configured to direct water onto the dishes for washing. The water inlet may be selectively connected to a fill device, which may connect the fill conduit with the wash chamber. The fill device may be configured to provide water to the circulation assembly without impinging the at least one dish rack. The one or more valves may selectively direct water from the water inlet to one or both of the dish spray device and the fill device.

Claims

1. A method for filling a dishwasher, the dishwasher comprising:

a wash chamber comprising a sump disposed proximate a lower end of the wash chamber;

a dish rack positioned within the wash chamber for receiving dishes for washing;

a water inlet conduit configured to connect the dishwasher to a clean water source;

a circulation assembly comprising a pump, wherein the circulation assembly is connected to the sump for circulating wash water in the sump through the wash chamber for washing dishes;

a first dish spray device located in the wash chamber and oriented towards the dish rack for spraying clean water onto the dishes;

a dish spray conduit connecting the water inlet conduit directly to the first dish spray device independent of the circulation assembly such that clean water can be supplied directly from the water inlet conduit to the first spray device without first being supplied to the sump or circulation assembly;

a fill conduit fluidly connecting the water inlet conduit with a fill device located in the wash chamber for providing clean water to the sump without impinging on the dishes;

one or more valves configured to selectively fluidly connect the water inlet conduit to one or both of the dish spray conduit and the fill conduit and direct clean water from the water inlet conduit to one or both of the first dish spray device and the fill device;

the method comprising;

receiving a fill indication;

in response to the fill indication, filling the wash chamber with clean water by opening at least one of the one or more valves to selectively direct clean water from the water inlet conduit to at least one of (a) the dish spray conduit, such that clean water enters the wash chamber and is sprayed directly onto the dishes independent of the circulation assembly, (b) the fill conduit, such that clean water enters the wash chamber and is provided directly to the sump without first impinging the dishes, or (c) both the dish spray conduit and the fill conduit, such that clean water enters the wash chamber and is both sprayed onto the dishes and provided to the sump independent of the circulation assembly;

receiving a fill indication; and

in response to the full indication, closing the one of the one or more valves to cease filling the wash chamber.

2. The method of claim 1, wherein the indication to fill the wash chamber further indicates that the filling step defines a wash filling step, such that the one or more valves are configured to direct clean water to the dish spray conduit during the wash filling step.

3. The method of claim 1, wherein the indication to fill the washing chamber further indicates that the filling step includes a sump filling step, and wherein the one or more valves further direct clean water to at least the fill conduit.

4. The method of claim 1 further comprising:

detecting a filter clogging condition in a filter disposed between the sump and an upper portion of the wash chamber;

closing, via the one or more valves, the dish spray conduit; and

directing clean water to the fill conduit.

5. The method of claim 1, wherein the dishwasher further comprises a filter spray device in one of the wash chamber and the sump oriented toward the filter for spraying the filter, and a filter spray conduit fluidly connecting the water inlet conduit to the filter spray device;

the method further comprising;

detecting a filter clogging condition in a filter disposed between the sump and an upper portion of the wash chamber; and

in response to detecting a clogging condition, cleaning the filter by, via the one or more valves, directing clean water to the filter spray device and spraying the filter.

6. The method of claim 1 further comprising:

detecting a filter clogging condition in a filter disposed between the sump and an upper portion of the wash chamber; and

in response to detecting a clogging condition, cleaning the filter by pulsing a circulation pump of the circulation assembly to provide wash water to one or more spray devices.

7. The method of claim 1 further comprises:

directing, via the one or more valves, clean water to the fill device, and

reducing the pressure of the clean water in the fill conduit.

8. The method of claim 7, wherein reducing the pressure of the clean water in the fill conduit further comprises reducing the pressure of the clean water by directing the clean water into a reservoir.

9. The method of claim 1, wherein the dish spray conduit further comprises an in-line additive assembly;

the method further comprising adding an additive to the clean water in the dish spray conduit.

10. The method of claim 9, wherein the dish spray conduit further comprises an in-line heater;

the method further comprising heating the clean water in the dish spray conduit.

11. The method of claim 10, wherein one of the one or more valves is a temperature-sensitive valve, and wherein the temperature-sensitive valve is disposed between the in-line heater and the additive assembly, such that the temperature-sensitive valve is configured to direct clean water to the additive assembly when the clean water is above a predefined threshold temperature.

12. The method of claim 1, further comprising circulating wash water in the wash chamber via the circulation assembly during a circulation portion, wherein the circulation portion comprises directing wash water onto dishes in the dish rack.

13. The method of claim 1, wherein the fill device is not connected to the circulation pump.

14. The method of claim 13, wherein the first dish spray device is fluidly connected to the circulation pump in addition to being fluidly connected to the dish spray conduit.