Hob Control Strip Layout for Intuitive Cooking Vessel Assignment

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Solution Overview

Problem

Existing hobs with freely placeable cooking vessels face challenges in providing a safe and practical operating method with manageable design effort, as they struggle to ensure simple and reliable assignment of cooking vessels to specific hotplates.

Innovation Solution

A hob design featuring a hob plate with a heating area and an operating area, where multiple heating means are arranged under the hob plate, and an elongated operating device with control strips that are arranged in a staggered manner to facilitate intuitive vessel assignment, using touch sensors and detection means to optimize heating and power adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a large number of heating means are arranged under the hob plate to enable free placement of cooking vessels, then the heating coverage and versatility are improved, but the complexity of assigning control elements to specific hotplates increases

Engineering Contradiction:
Improveheating coverageVSAvoidcontrol assignment complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control area is divided into multiple control strips, each assigned to specific heating means. The detection area is segmented into corresponding regions that map to these control strips. This segmentation allows cooking vessels to be detected in specific zones and automatically assigned to the appropriate control strip, simplifying the control assignment despite having many heating means.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system automatically detects the position of cooking vessels using detection means and autonomously assigns the corresponding control strip without requiring manual selection by the user. The hob plate itself serves as the control panel, with touch sensors integrated directly into the surface, eliminating the need for separate control interfaces and reducing assignment complexity.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If touch sensors are integrated into the hob plate as a control panel, then the ease of operation is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvecontrol accessibilityVSAvoidintegration complexity
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The control panel functions are merged directly into the hob plate surface. Touch sensors are integrated into the hob plate itself, combining the cooking surface and control interface into a single unit. This eliminates separate control panels and buttons, making the interface more accessible while the integration is achieved through standardized sensor modules that can be incorporated during manufacturing.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If control strips are arranged in a staggered manner to facilitate intuitive vessel assignment, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improvevessel-to-control assignmentVSAvoidcontrol strip arrangement
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The control strips are arranged in a staggered, asymmetric pattern rather than a uniform grid. This asymmetric arrangement corresponds to the segmented detection areas, creating an intuitive mapping between vessel position and control strip. The asymmetric layout naturally guides users in assigning vessels to the correct control strip based on spatial relationship, improving ease of operation despite the increased arrangement complexity.

Inventive Principle:
Principle #4Asymmetry

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 safe and efficient operation by simplifying the assignment of cooking vessels to hotplates, enabling optimal heating of vessels of various sizes at any position, with reduced complexity and improved ergonomics, while allowing for intuitive control and power adjustment.

Implementation Method 1

capacitive touch sensors below a hob plate

Methodology Applied
Scientific EffectCapacitive sensing: Capacitance

Implementation Method 2

Induction heating coils are preferred

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP3330616B1Hob and method for operating same
Publication Date: 2020.07.29 E G O ELEKTRO GERAETEBAU GMBH
  • EP3330616B1 patent drawingFigure 1
  • EP3330616B1 patent drawingFigure 2
  • EP3330616B1 patent drawingFigure 3~4

AI summary

A hob with a hob plate as a control panel has a heating area with heating devices and a control area with an elongate control device. The control device has control strips along two parallel directions parallel to the front side of the hob plate, which are formed by a plurality of touch sensors arranged next to one another below the control strips under the control panel. Control strips arranged next to one another in the longitudinal direction are separated from one another by an area without a touch sensor. On the one hand, two control strips are arranged next to one another and in extension to one another at the rear, and on the other hand, three control strips are arranged parallel and offset to the front side by side and in extension to one another. The control strips at the front do not completely cover the ones at the back.