Heating device for a hob, and hob
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Solution Overview
Problem
Existing heating devices for hobs lack flexibility in accommodating cooking vessels of different sizes and shapes, as they are designed for uniform heating surfaces, which limits their ability to efficiently heat variously sized and shaped cooking vessels.
Innovation Solution
A heating device with a flat carrier featuring non-intersecting partial heating areas, allowing for independent operation and combination of heating elements to create a bridge-like heating configuration, enabling efficient heating of cooking vessels of different sizes and shapes by arranging heating elements in a rectangular or square pattern with optional L-shaped configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If heating devices are designed with uniform heating surfaces, then the structure is simple and easy to manufacture, but the adaptability to cooking vessels of different sizes and shapes is poor
Solution Approach 1:
The heating device is divided into multiple independent heating elements (first heating element, second heating element, third heating element) that can be operated separately or in combination. Each heating element corresponds to a specific cooking vessel size, allowing flexible adaptation to different vessel dimensions while maintaining a relatively simple overall structure.
Solution Approach 2:
The heating device provides dynamic configuration options where heating elements can be activated individually or in various combinations (e.g., first and second heating elements together, or all three heating elements). This dynamic operability allows the heating surface area to be adjusted according to the size of the cooking vessel being used.
2Adaptability or versatility
If heating elements are arranged in intersecting patterns, then the heating area is maximized, but the heating areas overlap and reduce flexibility for different vessel sizes
Solution Approach 1:
The heating device divides the total heating area into separate, non-intersecting heating elements arranged in a specific pattern. This segmentation allows each heating element to be independently controlled and combined in different configurations, providing flexibility for various vessel sizes without the heating areas overlapping and reducing control precision.
Solution Approach 2:
Different regions of the heating device have different heating elements with specific characteristics optimized for different cooking vessel sizes. The first, second, and third heating elements are positioned and sized to provide appropriate heating distribution for small, medium, and large vessels respectively, ensuring optimal heating performance for each local region.
3Adaptability or versatility
If multiple heating elements are operated independently, then the adaptability to different cooking needs is improved, but the device complexity increases
Solution Approach 1:
The heating device is segmented into multiple independently controllable heating elements, each capable of being operated separately or in combination with others. This segmentation provides operational flexibility to match different cooking vessel sizes and heating requirements while keeping the control system manageable through clear independent control of each element.
Solution Approach 2:
The heating device achieves multi-functionality by allowing different combinations of heating elements to be activated for different cooking scenarios. The same set of heating elements can serve multiple purposes: individual elements for small vessels, combinations for medium vessels, and all elements together for large vessels, reducing the need for additional specialized heating zones.
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 design allows for versatile heating options, efficiently heating cooking vessels of various sizes and shapes by enabling the combination of heating areas from adjacent heating devices, ensuring effective and rapid heating across a range of vessel sizes and shapes.
Implementation Method 1
Heating elements or heating conductors advantageously generate radiant heat in the upwards direction during operation
Implementation Method 2
The heating elements each have at least one heating conductor
Data Source
AI summary
A heating device for a hob has a flat rectangular carrier with an outer edge, two heating elements which each have a heating conductor and which together form a heating area and which are fastened on the carrier, wherein each heating element defines a partial heating area, and the partial heating areas are situated inside the rectangular shape of the carrier. The heating elements and their partial heating areas can be operated independently of one another. The partial heating areas of the heating elements do not intersect. A first partial heating area is rectangular and extends, by way of at least one of its outer sides, to the outer edge of the carrier and runs parallel in relation to the outer edge. A second partial heating area covers the portion of the rest of the carrier which is left free by the first partial heating area. Various configurations of heated areas can be achieved owing to the independent operation.