HEATING ELEMENT WITH TEMPERATURE CONTROL
First Claim
1. A heating element comprising a heating unit, a heat transfer unit and a first temperature control element and a second temperature control element, a first temperature control element being provided at a first distance to the heating unit and the second temperature control element being provided at a second distance to the heating unit, wherein the first temperature control element has a first minimal activation threshold and the second temperature control element has a second minimal activation threshold, wherein the second distance is smaller than the first distance and the second threshold is higher than the first threshold, and the first temperature control element and a second temperature control element are both in immediate contact with the heat transfer unit.
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Abstract
A heating element is provided, comprising a heating unit, a heat transfer unit and a first temperature control element and a second temperature control element, a first temperature control element being provided at a first distance to the heating unit and the second temperature control element being provided at a second distance to the heating unit, wherein the first temperature control element has a first minimal activation threshold and the second temperature control element has a second minimal activation threshold, wherein the second distance is smaller than the first distance and the second threshold is higher than the first threshold, and the first temperature control element and a second temperature control element are both in immediate contact with the heat transfer unit. In further aspects, the invention relates to a method of heating an appliance by using a heating element and a method for providing a heating element.
24 Citations
15 Claims
- 1. A heating element comprising a heating unit, a heat transfer unit and a first temperature control element and a second temperature control element, a first temperature control element being provided at a first distance to the heating unit and the second temperature control element being provided at a second distance to the heating unit, wherein the first temperature control element has a first minimal activation threshold and the second temperature control element has a second minimal activation threshold, wherein the second distance is smaller than the first distance and the second threshold is higher than the first threshold, and the first temperature control element and a second temperature control element are both in immediate contact with the heat transfer unit.
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11. A method of heating an appliance by using a heating element comprising a heating unit, a heat transfer unit and a first temperature control element and a second temperature control element, a first temperature control element being provided at a first distance to the heating unit and the second temperature control element being provided at a second distance to the heating unit, wherein the first temperature control element has a first minimal activation threshold and the second temperature control element has a second minimal activation threshold, wherein the second distance is smaller than the first distance and the second threshold is higher than the first threshold and the first temperature control element and a second temperature control element are both in immediate contact with the heat transfer unit, wherein the heating unit is operated at a voltage in the range of 30 V to 50 V.
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12. A method for providing a heating element, the method comprising the following steps:
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providing a heat transfer unit providing a heating unit providing a first temperature control element in immediate contact with the heat transfer unit, the first temperature control element having a first minimal activation threshold and a first distance to the heating unit providing a second temperature control element in immediate contact with the heat transfer unit the second temperature control element having a second minimal activation threshold higher than the a first minimal activation threshold and having at a second distance to the heating unit, the second temperature control element being provided such that the second distance is smaller than the first distance. - View Dependent Claims (13)
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Specification