Cooktop appliance and temperature switch

Patent metadata

Field	Value
Publication number	US-10517144-B2
Application number	US-201715455183-A
Country	US
Kind code	B2
Filing date	Mar 10, 2017
Priority date	Mar 10, 2017
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

A cooktop appliance having a temperature switch is generally provided herein. The cooktop appliance may include a panel, an electric heating element, an infinite switch, and the temperature switch. The electric heating element may be positioned at the panel and include a first terminal and a second terminal. The infinite switch may be electrically coupled to the electric heating element to control power thereto. The infinite switch may include a primary voltage path and an auxiliary voltage path independent from the primary voltage path. The temperature switch disposed in thermal communication with the electric heating element, the temperature switch being in alternate communication with the primary voltage path below a predetermined threshold temperature and with the auxiliary voltage path at or above the predetermined threshold temperature.

First claim

What is claimed is:

1. A cooktop appliance comprising:
a panel;
an electric heating element positioned at the panel, the electric heating element comprising a first terminal and a second terminal for connection to a power supply, the second terminal connected in series with the first terminal, a voltage differential being applicable between the first terminal and the second terminal to control heat at the electric heating element;
an infinite switch electrically coupled to the electric heating element to control power thereto, the infinite switch comprising a primary voltage path and an auxiliary voltage path independent from the primary voltage path; and
a temperature switch disposed in thermal communication with the electric heating element, the temperature switch being in alternate communication with the primary voltage path below a predetermined threshold temperature and with the auxiliary voltage path at or above the predetermined threshold temperature,
wherein the temperature switch comprises a pole terminal, a first throw terminal, and a second throw terminal, the pole terminal being electrically coupled to the electric heating element, the first throw terminal being electrically coupled to the primary voltage path, the second throw terminal being electrically coupled to the auxiliary voltage path, and wherein the pole terminal is actuatable between the first throw terminal and the second throw terminal according to a temperature at the temperature switch.

2. The cooktop appliance of claim 1 , wherein the temperature switch is a bimetallic temperature switch.

3. The cooktop appliance of claim 1 , wherein the electric heating element is a single coil heating element.

4. The cooktop appliance of claim 1 , wherein the primary voltage path is a high duty cycle path permitting a first power output, and wherein the auxiliary voltage path is a low duty cycle path permitting a second power output, the second power output being less than the first power output.

5. The cooktop appliance of claim 1 , wherein the primary voltage path comprises a first bimetal strip, and wherein the auxiliary voltage path comprises a second bimetal strip in electric isolation from the first bimetal strip.

6. The cooktop appliance of claim 1 , further comprising a drip pan attached to the panel and positioned below the electric heating element, wherein the temperature switch is positioned in thermal engagement with the drip pan.

7. The cooktop appliance of claim 6 , further comprising a switch bracket extending below the panel, wherein the temperature switch is supported on the switch bracket.

8. The cooktop appliance of claim 7 , wherein the temperature switch is mounted in direct contact with the drip pan.

9. The cooktop appliance of claim 8 , wherein the drip pan comprises a concave sidewall, and wherein the temperature switch comprises a flat face-plate in contact with the concave sidewall.

10. A cooktop appliance comprising:
a panel;
an electric heating element positioned at the panel, the electric heating element extending between a first terminal and a second terminal for connection to a power supply, the second terminal connected in series with the first terminal, a voltage differential being applicable between the first terminal and the second terminal to control heat at the electric heating element;
a bimetallic temperature switch positioned in thermal communication with the electric heating element, the bimetallic temperature switch comprising a pole terminal electrically coupled in series with the second terminal; and
an infinite switch electrically coupled to the bimetallic temperature switch to control power at the electric heating element, the infinite switch comprising a primary voltage path and an auxiliary voltage path independent from the primary voltage path,
wherein the first throw terminal is electrically coupled to the primary voltage path, wherein the second throw terminal is electrically coupled to the auxiliary voltage path, and wherein the pole terminal is actuatable between the first throw terminal and the second throw terminal according to a temperature at the bimetallic temperature switch.

11. The cooktop appliance of claim 10 , wherein the electric heating element is a single coil heating element.

12. The cooktop appliance of claim 10 , wherein the primary voltage path comprises a high duty cycle path and the auxiliary voltage path comprises a low duty cycle path, the high duty cycle path permitting a first power output, and low duty cycle path permitting a second power output, the second power output being less than the first power output.

13. The cooktop appliance of claim 12 , wherein the high duty cycle path comprises a first bimetal strip, and wherein the low duty cycle path comprises a second bimetal strip in electric isolation from the first bimetal strip.

14. The cooktop appliance of claim 13 , wherein the pole terminal is electrically coupled to the electric heating element, wherein the first throw terminal is electrically coupled to the high duty cycle path, the wherein the second throw terminal is electrically coupled to the low duty cycle path.

15. The cooktop appliance of claim 10 , further comprising a drip pan attached to the panel and positioned below the electric heating element, wherein the bimetallic temperature switch is positioned in thermal engagement with the drip pan.

16. The cooktop appliance of claim 15 , further comprising a switch bracket extending below the panel, wherein the bimetallic temperature switch is supported on the switch bracket.

17. The cooktop appliance of claim 16 , wherein the bimetallic temperature switch is mounted in direct contact with the drip pan.

18. The cooktop appliance of claim 17 , wherein the drip pan comprises a concave sidewall, and wherein the bimetallic temperature switch comprises a flat face-plate in contact with the concave sidewall.

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Gomez Eugenio

Classifications

• H05B1/0213 Primary

  using bimetallic elements · CPC title

• H05B1/0266

  Cooktops · CPC title

• H05B3/748

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

• F24C7/083

  on tops, hot plates · CPC title

• F24C7/087

  of electric circuits regulating heat · CPC title