Self-cleaning top burner for a stove

Patent metadata

Field	Value
Publication number	US-9731333-B2
Application number	US-201313735216-A
Country	US
Kind code	B2
Filing date	Jan 7, 2013
Priority date	Jan 7, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A pyrolytic cleaning top burner system for a stove having a normal cooking mode includes a top burner coupled to a stove, a cover for seating on the stove surface, means for heating a top burner, and an exhaust outlet. The cover covers at least the top burner in a cleaning mode. The heating means heats to a cleaning temperature in a cleaning mode that permits baked on food that is positioned under the cover to be disintegrated with heat. The exhaust outlet exhausts air from under the cover. A method for pyrolytically cleaning a top burner of a stove or cooktop is also disclosed.

First claim

What is claimed is:

1. A pyrolytic cleaning top burner system for a stove top having at least a normal cooking mode, said system comprising:
a top burner at a stove top surface;
a cleaning mode associated with the stove top surface;
a cover for seating on the stove top surface that covers at least the top burner in the cleaning mode;
a sensor for sensing when the cover is seated on the stove top surface;
a temperature sensor for sensing the cleaning temperature during the cleaning mode; and
means for heating a top burner to a cleaning temperature in the cleaning mode that permits baked on food matter that is positioned under the cover to be disintegrated with heat.

2. The system of claim 1 , further comprising an air inlet associated with the top burner; and an exhaust outlet for exhausting air from under the cover.

3. The system of claim 1 , wherein the stove top further comprises:
a cavity positioned under the burner;
wherein the burner is a gas burner and further comprising a grate positioned over the burner and cavity; or
wherein the burner is an open coil electric burner; or
wherein the burner is a closed top electric burner and further comprising a plate positioned over the burner and forming a contiguous top surface of the stove top, with the cover seating on the plate.

4. The system of claim 3 , wherein the burner is a gas burner and further comprising a means for regulating the flow of gas to the burner to control the burn temperature of the burner, wherein when in the cleaning mode, a higher rate of flow of gas is permitted than for a cooking mode, with the cleaning mode producing a burn temperature that permits the oxidation of food particles, fats, oils, and deposits on the burner or in the vicinity of the burner.

5. The system of claim 3 , wherein the burner is an open electric coil burner and when in the cleaning mode, the electric coil burner heats to a temperature that exceeds a normal cooking temperature, with the cleaning mode producing a burn temperature that permits the oxidation of food particles, fats, oils, and deposits on the burner, base plate or in the cavity.

6. The system of claim 3 , wherein the burner is a closed top electric burner having a closed top surface and when in a cleaning mode, the electric burner heats the closed top surface to a temperature that exceeds a normal cooking temperature, with the cleaning mode producing a burn temperature that permits the oxidation of food particles, fats, oils, and deposits on the closed top surface of the range.

7. The system of claim 1 , wherein the cover is one of retractable or removable from the stove top; or
wherein the stove top has more than one burner and the cover has a size to cover one or more burners.

8. The system of claim 1 , wherein the means for heating the top burner includes a heating element and a primary air inlet, which may or may not include a fan for introducing heated or unheated air into the cavity.

9. The system of claim 1 , wherein the cover is insulated and the cover is lockable into place on the stove top.

10. The system of claim 3 , further comprising one or more air channels coupled to the burner or cavity for one of inputting air under the cover or exhausting air from the cover.

11. The system of claim 1 , further comprising a controller coupled to the stove, said controller including programming for a cleaning mode and a cooking mode, with the cooking mode providing temperatures normally associated with cooking and the cleaning mode providing temperatures necessary to disintegrate foodstuffs associated with the stove top and burner when the cover is installed on the stove top, wherein the temperature sensor is coupled to the controller.

12. A pyrolytic cleaning top burner system for a stove top having at least one top burner having at least a cooking mode for operating the at least one top burner, said system comprising:
a cleaning mode providing burner temperatures that exceed temperatures associated with the cooking mode;
a cover that covers at least the top burner in a cleaning mode;
a sensor for sensing when the cover is seated on the stove top surface;
a temperature sensor for sensing the cleaning temperature during the cleaning mode; and
means for heating a top burner to a cleaning temperature in the cleaning mode that permits baked on food matter that is positioned under the cover to be disintegrated with heat.

13. The system of claim 12 , further comprising a controller, wherein the cooking and cleaning modes are programmed into the controller.

14. The system of claim 12 , further comprising an air inlet coupled to the top burner and an exhaust outlet for exhausting air from under the cover, wherein the air inlet and air outlet are one of integral with one another or separate from one another.

15. The system of claim 12 , wherein the cover is one of retractable or removable from stove top; or
wherein the stove top has more than one burner and the cover has a size to cover one or more burners.

16. The system of claim 13 , wherein the cover is insulated and the cover is lockable into place on the stove top.

17. A method of pyrolytically cleaning a burner, said method comprising:
installing a cover over a burner of a stove top;
sensing that the cover is positioned over the burner of the stove top;
measuring the temperature of under the cover;
increasing the temperature of the burner until a cleaning temperature is achieved;
regulating the temperature of the burner to maintain the cleaning temperature; and
exhausting air from under the cover during the cleaning mode, wherein the cleaning temperature of the burner is maintained for a prescribed time period that is anticipated to ensure that any food waste under the cover has been oxidized.

18. The method of claim 17 , further comprising:
sensing a temperature at the burner and using an algorithm based in part on the temperature to predict when the food waste has oxidized;
locking the cover on the stove top in the cleaning mode;
adding air under the cover during the cleaning mode to raise the temperature of the burner to the cleaning temperature; and
controlling the flow of gas to the burner until the cleaning temperature is achieved and controlling the flow of gas to the burner in order to maintain the cleaning temperature for the prescribed time period.

19. The method of claim 17 , further comprising:
turning the burner off and waiting for a period of time until the cover and stove top have cooled;
one of signaling that the cover can be unlocked after the waiting period of time has expired, or automatically unlocking the cover after the waiting period of time has expired;
unlocking the cover;
removing the cover from the stove top;
stowing the cover in a recess that is coupled to the stove top or stowing the cover in another location removed from the stove top; and
wiping any remaining food residue from the stove top.

Assignees

• Electrolux Home Prod Inc

Inventors

• Fowler Warren

Classifications

• F24C15/10

  Tops, e.g. hot plates; Rings (cover lids or splash guards F24C15/12; spillage trays or grooves F24C15/14) · CPC title

• B08B7/0085

  by pyrolysis · CPC title

• B08B7/0071 Primary

  by heating (B08B7/0035 takes precedence) · CPC title

• F24C14/02 Primary

  pyrolytic type · CPC title