Induction Hob Multi-Action Control for Heating Type Safety
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Solution Overview
Problem
Hob devices with position-dependent heating power lack operating safety features, failing to meet European and North American safety standards, particularly due to inadequate user control mechanisms.
Innovation Solution
A hob device with a variable cooking surface and control unit that divides the surface into multiple heating zones, associates heating parameters with each zone based on location, and requires user-operated actions to confirm heating type changes, enhancing safety and transparency through a user interface that includes gesture recognition and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the hob device divides the cooking surface into multiple heating zones with position-dependent heating power, then the heating efficiency and adaptability are improved, but the operating safety deteriorates due to lack of sufficient control actions
Solution Approach 1:
The control unit requires a first operating action to activate a heating zone and a second operating action as confirmation before the heating type change takes effect. This preliminary action sequence prevents inadvertent heating type changes while maintaining the ability to implement position-dependent heating power across multiple heating zones, thus resolving the contradiction between adaptability and operating safety.
2Manufacturing precision
If the hob device implements position-dependent heating power for cooking zones, then the heating precision is improved, but the operating safety deteriorates due to insufficient user control mechanisms
Solution Approach 1:
The control unit provides feedback to the user interface indicating that a heating type change has been requested but not yet executed. The system waits for confirmation through a second operating action, creating a feedback loop that ensures user awareness and intentional action. This maintains precise heating power control while enhancing operating safety through confirmed user intent.
3Reliability
If the hob device requires multiple operating actions for heating type changes, then the operating safety is improved, but the ease of operation deteriorates
Solution Approach 1:
The system dynamically transitions from a simple single-action control mode to a two-action confirmation mode only when a heating type change is detected. For routine operations, the system maintains simple operation, but automatically activates the additional confirmation step only when needed for safety-critical heating type changes, thus balancing safety improvement with operational ease.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces inadvertent heating changes, meets North American safety standards, and enhances user safety and convenience by requiring multiple user actions for heating type changes, thereby preventing accidents and improving cost efficiency.
Implementation Method 1
an induction heating element. The term "induction heating element" should be understood in particular to mean a heating element that is provided to convert at least 100 W, in particular at least 500 W, advantageously at least 1000 W, preferably at least 2000 W, of electrical heating power into an electromagnetic radiation field
Implementation Method 2
which is provided to be converted into heat in at least one cooking pot, in particular at least the base thereof, by magnetic reversal and eddy current effects
Implementation Method 3
As an alternative, resistance heaters, radiation heaters and/or similar are conceivable
Data Source
AI summary
A hob device, in particular an induction hob device, includes a variable cooking surface, a user interface and a control unit which in the presence of a heating type divides the cooking surface into a plurality of heating zones in at least one dividing direction, associates heating parameter to each of the heating zones, in a manner dependent on location, for heating at least one cooking pot placed on the heating zone, and forms a cooking zone that is associated with the cooking pot and is heated using the heating parameter. In the event of a request of the heating type for the cooking pot, the control unit is provided to wait for at least one operating action by a user by way of the user interface.