Cooktop with temperature sensor

• US 20030042246A1
• Filed: 08/16/2002
• Published: 03/06/2003
• Est. Priority Date: 02/16/2000
• Status: Abandoned Application

• Current Assignee: Dan Neumayer, Franz Gratz, Markus Theine, Monika Zeraschi, Peter Vetterl, Uwe Has
• Original Assignee: Dan Neumayer, Franz Gratz, Markus Theine, Monika Zeraschi, Peter Vetterl, Uwe Has
• Inventors: Has, Uwe, Vetterl, Peter, Neumayer, Dan, Zeraschi, Monika, Theine, Markus, Gratz, Franz
• Application Number:
  US10/223,029
• Publication Number:
  US 20030042246A1
• Time in Patent Office: Days
• US Class Current: 219/448.14
• CPC Class Codes: H05B 2213/07 Heating plates with temperature control means
• CPC Class Codes: H05B 3/746 Protection, e.g. overheat cutoff, hot plate indicator

Abstract

In a cooktop with a cooktop panel, in particular, made of glass ceramic, beneath which at least one heating element is disposed for heating up a cooking vessel to be placed on the cooktop panel, and with a temperature sensor for sensing temperature of the cooktop panel, in particular, the underside thereof within the heating element and is connected to a control unit for controlling the heating power of the heating element, the temperature sensor is connected to a heat-conducting element, which is in heat-conducting connection with the underside of the cooktop panel, and the element completely covers the temperature sensor in the upward direction toward the cooktop panel, to achieve sufficient measurement accuracy with a high standard of safety.

Claims

1. A cooktop, comprising:

a cooktop panel having an underside;

at least one heating element disposed beneath said cooktop panel for heating up a cooking vessel to be placed on said cooktop panel, said at least one heating element having an inside;

a control unit electrically connected to said at least one heating element for controlling a heating power of said at least one heating element;

a temperature sensor sensing a temperature of said underside of said cooktop panel within said at least one heating element, said temperature sensor electrically connected to said control unit; and

a heat-conducting element connected to said temperature sensor, said heat-conducting element heat-conductively connected to said underside of said cooktop panel and completely covering said temperature sensor in an upward direction toward said cooktop panel.

2. The cooktop according to claim 1, wherein:

said at least one heating element has a thermal radiation heating device; and

insulating material shields said temperature sensor and said heat-conducting element from thermal radiation emanating from said thermal radiation heating device.

3. The cooktop according to claim 1, wherein:

said temperature sensor has electrical leads; and

said heat-conducting element covers said electrical leads in said upward direction toward said cooktop panel.

4. The cooktop according to claim 1, wherein:

said temperature sensor has electrical leads; and

said heat-conducting element covers said electrical leads when viewed from said cooktop panel.

5. The cooktop according to claim 2, wherein said heat-conducting element:

has an upper wall and skirt-like side walls; and

is approximately shroud-shaped at least in a region of said temperature sensor.

6. The cooktop according to claim 5, wherein:

said heat-conducting element has a shroud with a bottom side; and

said shroud is at least partly closed on said bottom side.

7. The cooktop according to claim 5, wherein said heat-conducting element is of a material selected from the group consisting of X7 steel and X10 steel at least in said region of said temperature sensor.

8. The cooktop according to claim 6, wherein said shroud is of a material selected from the group consisting of X7 steel and X10 steel.

9. The cooktop according to claim 1, wherein said heat-conducting element is grounded outside said at least one heating element.

10. The cooktop according to claim 9, wherein said heat-conducting element has an ohmic resistance less than approximately 0.1 ohm.

11. The cooktop according to claim 9, wherein:

said heat-conducting element has a ground line; and

said heat-conducting element has a connection portion connected to said ground line.

12. The cooktop according to claim 9, wherein said heat-conducting element has a connection portion to be connected to a ground line.

13. The cooktop according to claim 1, wherein:

said temperature sensor has electrical leads; and

said heat-conducting element has a connection portion connected to said electrical leads.

14. The cooktop according to claim 1, wherein:

said heat-conducting element has an inside; and

said temperature sensor is cast to said inside of said heat-conducting element.

15. The cooktop according to claim 1, wherein:

said heat-conducting element has an inside; and

said temperature sensor is fastened to said inside of said heat-conducting element by casting.

16. The cooktop according to claim 1, wherein said heat-conducting element is:

a spring element; and

pressed in a region of said temperature sensor against said underside of said cooktop panel.

17. The cooktop according to claim 1, wherein said cooktop panel is of glass ceramic.

18. The cooktop according to claim 1, wherein said heat-conducting element completely covers said temperature sensor when viewed from said cooktop panel.

19. In a cooktop having a cooktop panel with an underside, at least one heating element disposed beneath the cooktop panel for heating up a cooking vessel to be placed on the cooktop panel, a control unit electrically connected to the at least one heating element for controlling a heating power of the at least one heating element, and a temperature sensor sensing a temperature of the underside of the cooktop panel within the at least one heating element, the temperature sensor electrically connected to the control unit, a temperature sensor holder comprising:

a heat-conducting element connected to the temperature sensor, said heat-conducting element heat-conductively connected to the underside of the cooktop panel and completely covering the temperature sensor in an upward direction toward the cooktop panel.

20. The temperature sensor holding according to claim 19, wherein said heat-conducting element is a removable part of the at least one heating element.

21. In a cooktop having a cooktop panel with an underside, a control unit, and a temperature sensor electrically connected to the control unit and sensing a temperature of the cooktop panel, a heater comprising:

at least one heating element having an inside, said at least one heating element;

disposed beneath the cooktop panel for heating up a cooking vessel to be placed on the cooktop panel; and

electrically connected to the control unit for controlling a heating power of said at least one heating element;

the temperature sensor sensing a temperature of the underside of the cooktop panel within said at least one heating element; and

a heat-conducting element connected to the temperature sensor, said heat-conducting element heat-conductively connected to the underside of the cooktop panel and completely covering the temperature sensor in an upward direction toward the cooktop panel.