Induction Hob Global Heating Zone Control
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Solution Overview
Problem
Existing induction hobs with inductors arranged in a matrix fashion require users to manually select and setpoint values for each heating zone, which is time-consuming and not ergonomic, especially when multiple zones need the same heat input.
Innovation Solution
A method and induction hob design that allows for controlling all heating zones with a single power control, where each zone is set to an identical setpoint value, simplifying operation and reducing the time needed to assign the same heat setting across all zones, with automatic detection and control of new zones added to the cooking surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each heating zone is controlled independently with individual setpoint values, then the heating precision for different containers is improved, but the operation complexity and time required to set parameters increases
Solution Approach 1:
The patent merges the control of multiple heating zones into a single unified control system. When a global setpoint value is applied, all detected heating zones automatically receive the same power level, eliminating the need for individual zone configuration and significantly simplifying user operation while maintaining precise heating control.
Solution Approach 2:
The control system is designed to support multiple operating modes: it can apply a single setpoint value to all heating zones simultaneously, or allow independent control of individual zones when needed. This universal approach enables the system to adapt to different cooking scenarios, providing both simplified global control and detailed individual control as required.
2Loss of time
If multiple heating zones are controlled with identical setpoint values, then the operation time is reduced, but the adaptability to different heating requirements is limited
Solution Approach 1:
The control system dynamically switches between two operational states: a global control mode where a single setpoint value is applied to all heating zones for rapid setup, and an individual control mode where each zone can have its own setpoint value for customized heating requirements. This dynamic adaptability allows the system to optimize for either speed or precision depending on the cooking task.
Solution Approach 2:
The system allows users to change the control parameter structure from individual zone parameters to a single global parameter when the same heating level is needed across multiple zones. This parameter transformation reduces the number of input operations required while maintaining the ability to revert to individual parameter control when different heating levels are required for different containers.
3Measurement precision
If users must manually select setpoint values for each heating zone, then the heating control precision is improved, but the user burden and operation complexity increases
Solution Approach 1:
The patent combines multiple independent control interfaces into a single unified control mechanism. Instead of requiring separate controls for each heating zone, the system provides a global control interface that manages all zones simultaneously, reducing the perceived complexity for users while maintaining precise heating control through automatic zone detection and power distribution.
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
This approach simplifies the use of the induction hob by allowing all heating zones to be controlled with a single power setting, minimizing the time required to set identical heat settings across multiple zones, and ensuring that new zones are automatically controlled with the same power as existing zones, enhancing user efficiency.
Implementation Method 1
a set of inductors distributed along a two-dimensional frame in a hob of said induction hob, each inductor being powered by an inverter power supply device, said inductors forming means for heating a container
Data Source
Figure 1
AI summary
The method involves detecting a heating zone (Z1), and controlling the detected heating zone with a heat-setpoint value. A new container is inserted on a cooking surface (3). A new heating zone (Z2) is detected on the cooking surface constituted of a subset of induction units (2) partially covered by the new container. The detected new heating zone is controlled with the heat-setpoint value applied for the set of heating zones of the cooking surface. An independent claim is also included for an induction cooktop comprising a set of induction units.