Process and device for indicating an anomalous thermal stress condition in a heating surface made from glass ceramic or a comparable material
First Claim
1. A process for detecting and indicating an anomalous thermal stress condition in a heating surface made of glass ceramic including the steps of:
- determining a characteristic temperature distribution in the heating surface for a specific anomalous thermal stress condition by monitoring a plurality of temperature sensors, independent of one another, placed in the area of a heating zone and indicating the condition by operating condition indicators.
4 Assignments
0 Petitions
Accused Products
Abstract
A process for detecting and indicating an anomalous thermal stress condition in a heating surface made from glass ceramic or a comparable material, especially a glass ceramic cooking surface, is described, and by one or more temperature sensors, independent of one another, placed in the area of the heating zone the temperature distribution in the heating surface characteristic for a specific anomalous thermal stress condition is determined and is indicated by suitable operating condition indicators and/or optical and/or acoustic warning devices. This has the advantage that harmful operating conditions caused by carelessness can be indicated to the user early and can be specifically eliminated by the user.
25 Citations
14 Claims
-
1. A process for detecting and indicating an anomalous thermal stress condition in a heating surface made of glass ceramic including the steps of:
determining a characteristic temperature distribution in the heating surface for a specific anomalous thermal stress condition by monitoring a plurality of temperature sensors, independent of one another, placed in the area of a heating zone and indicating the condition by operating condition indicators. - View Dependent Claims (2, 3, 4, 5)
-
6. A device for detecting and indicating an anomalous thermal stress condition in a cooking area with a glass ceramic cooking surface having at least one cooking zone, comprising:
-
at least one temperature sensor in an edge area of the cooking zone, at least one other temperature sensor in a central area of the cooking zone, the temperature sensors producing temperature measuring signals in the edge area and in the central area being independent of one another and being placed so that in each case all spots essential for a case of stress in the cooking zone are detected, electronic circuit means for evaluation of the temperature-measuring signals, and operating condition indicators connected to the electronic circuit means for indicating the operating condition determined by the temperature sensors. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A process for detecting and indicating an anomalous thermal stress condition in a glass ceramic heating surface comprising the steps of:
-
independently monitoring individual temperature sensors in arrays of several temperature sensors placed in selected areas of the glass ceramic heating surface, and upon detecting a thermal anomaly in any one of the selected areas generating a signal indicative thereof. - View Dependent Claims (12)
-
-
13. An arrangement for detecting and indicating an anomalous thermal stress condition in a circular glass ceramic heating surface having a center and a periphery comprising:
-
a first array of temperature sensors positioned proximate the center of the heating surface; a second array of temperature sensors positioned proximate the periphery of the heating surface; first means monitoring the first array of temperature sensors for providing a first signal if the temperature proximate the center of the heating surface exceeds a predetermined temperature level, second means monitoring the second array of temperature sensors for providing a second signal if the temperature proximate the periphery of the heating surface exceeds the predetermined temperature level; and indicating means, connected to the first and second monitoring means, for generating a signal indicating that either the first or second monitoring means has detected a temperature in excess of the predetermined temperature level. - View Dependent Claims (14)
-
Specification