Cooktop appliance and method of operation

Patent metadata

Field	Value
Publication number	US-10088169-B2
Application number	US-201615210938-A
Country	US
Kind code	B2
Filing date	Jul 15, 2016
Priority date	Jul 15, 2016
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A cooktop appliance and method of operation is provided. The cooktop appliance may include a user interface, a power source, a burner, a thyristor, and a relay switch. The power source may be operably connected to the user interface. The burner may include a first radiant heat element and a second radiant heat element electrically coupled in parallel to the power source. The thyristor may be operably connected to the user interface and electrically coupled in series between the power source and the first radiant heat element to control activation of the first radiant heat element. The relay switch may be operably connected to the user interface and electrically coupled in series between the power source and the second radiant heat element to control activation of the second radiant heat element.

First claim

What is claimed is:

1. A cooktop appliance comprising:
a user interface;
a power source operably connected to the user interface;
a burner including a first radiant heat element and a second radiant heat element electrically coupled in parallel to the power source;
a thyristor operably connected to the user interface and electrically coupled in series between the power source and the first radiant heat element to control activation of the first radiant heat element;
a relay switch operably connected to the user interface and electrically coupled in series between the power source and the second radiant heat element to control activation of the second radiant heat element; and
a controller operably connected to the user interface, the thyristor, and the relay switch, wherein the controller is configured to
receive an input signal from the user interface,
determine a heating condition based at least in part on the input signal received from the user interface, and
activate one or more of the relay switch or the thyristor according to the determined heating condition,

wherein determination of a heating condition includes determination of one of a low heat setting or a high heat setting, wherein activation of one or more of the relay switch or the thyristor includes activation of only one of the relay switch or the thyristor upon determination of the low heat setting, wherein the other of the relay switch or the thyristor is restricted from activation in the low heat setting, and wherein activation of one or more of the relay switch or the thyristor includes activation of the relay switch and the thyristor upon determination of the high heat setting.

2. The cooktop appliance of claim 1 , wherein a length of the first radiant heat element is coiled about a center point to include a plurality of coils and a length of the second radiant heat element is coiled about the center point to include a plurality of coils, and wherein the coils of the first radiant heat element alternate with the coils of the second radiant heat element such that the coils of the first and second radiant heat elements are intertwined about the center point.

3. The cooktop appliance of claim 1 , wherein a length of the first radiant heat element is coiled about a center point to include a plurality of coils and a length of the second radiant heat element is coiled about the center point to include a plurality of coils, and wherein the coils of the first radiant heat element are positioned radially outward from the coils of the second radiant heat element such that the coils of the first and second radiant heat elements are discrete concentric rings about the center point.

4. The cooktop appliance of claim 1 , wherein activation of one or more of the relay switch or the thyristor includes activation of the relay switch upon determination of the low heat setting.

5. The cooktop appliance of claim 1 , wherein activation of one or more of the relay switch or the thyristor includes activation of the thyristor upon determination of the low heat setting.

6. The cooktop appliance of claim 1 , wherein the thyristor includes a TRIAC.

7. A cooktop appliance comprising:
a user interface;
a power source operably connected to the user interface;
a burner including a radiant heat element electrically coupled to the power source;
a relay control operably connected to the user interface, the relay control including a thyristor and a relay switch, the thyristor and the relay switch coupled in parallel, the relay control being positioned in series between the power source and the radiant heat element to control activation of the radiant heat element; and
a controller operably connected to the user interface, the thyristor, and the relay switch, wherein the controller is configured to
receive an input signal from the user interface,
determine a heating condition based at least in part on the input signal received from the user interface, and
activate one or more of the relay switch or the thyristor according to the determined heating condition,

wherein determination of a heating condition includes determination of one of a low heat setting or a high heat setting, wherein activation of one or more of the relay switch or the thyristor includes activation of only one of the relay switch or the thyristor upon determination of the low heat setting, wherein the other of the relay switch or the thyristor is restricted from activation in the low heat setting, and wherein activation of one or more of the relay switch or the thyristor includes activation of the relay switch and the thyristor upon determination of the high heat setting.

8. The cooktop appliance of claim 7 , wherein activation of one or more of the relay switch or the thyristor includes activation of the relay switch upon determination of the low heat setting.

9. The cooktop appliance of claim 7 , wherein activation of one or more of the relay switch or the thyristor includes activation of the thyristor upon determination of the low heat setting, and wherein activation of one or more of the relay switch or the thyristor includes activation of the relay switch and the thyristor upon determination of the high heat setting.

10. The cooktop appliance of claim 7 , wherein the thyristor includes a TRIAC.

11. A method of operating a cooktop appliance comprising a burner including a first radiant heat element and a second radiant heat element, the first radiant heat element being electrically coupled to the second radiant heat element in parallel, the cooktop appliance further comprising a thyristor electrically coupled in series to the first radiant heat element and a relay switch electrically coupled in series to the second radiant heat element, the method comprising:
receiving an input signal from a user interface;
determining a heating condition based at least in part on the input signal; and
activating one or more of the relay switch to energize the second radiant heat element or the thyristor to energize the first radiant heat element, wherein the activating one or more of the relay switch or the thyristor is initiated according to the determined heating condition,
wherein determining a heating condition includes determining one of a low heat setting or a high heat setting, wherein activating one or more of the relay switch or the thyristor includes activating only one of the relay switch or the thyristor upon determining the low heat setting, wherein the other of one of the relay switch or the thyristor is restricted from activating in the low heat setting, and wherein activating one or more of the relay switch or the thyristor includes activating the relay switch and the thyristor upon determining the high heat setting.

12. The method of claim 11 , wherein activating one or more of the relay switch or the thyristor includes
activating the relay switch upon determining the low heat setting, and
activating the relay switch and the thyristor upon determining the high heat setting.

13. The method of claim 12 , wherein determining a heating condition further includes determining an energy-conservation mode.

14. The method of claim 11 , wherein activating one or more of the relay switch or the thyristor includes
activating the relay switch upon determining the low heat setting, and
activating the relay switch and the thyristor upon determining the high heat setting.

15. The method of claim 14 , wherein determining a heating condition further includes determining a lifespan-conservation mode.

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Gelber Scott Michael
• Bicknell William Hull

Classifications

• H05B3/748

  Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater (H05B3/742 takes precedence) · CPC title

• F24C7/088 Primary

  on stoves · CPC title

• F24C15/106 Primary

  electric circuits · CPC title

• H05B3/20

  Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater (H05B3/62, H05B3/68, H05B3/78, H05B3/84 take precedence) · CPC title

• H05B1/0261

  of food · CPC title