Cooktop Module with Liquid-Tight Separation for Generator Protection

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Solution Overview

Problem

Induction hobs integrated into worktops face risks of mechanical and liquid stress due to thin worktops, potentially exposing sensitive electronics to damage from leaks or mechanical stress, compromising safe operation.

Innovation Solution

A fully integrated hob module with a carrier device designed as a liquid-tight separating device, where the induction device is above and the generator device is below, protected by a metal plate, with strain relief lines and cable bushings to prevent liquid ingress and mechanical stress, ensuring safe operation even if the worktop is defective.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the worktop is made thin to achieve a sleek integrated design, then the aesthetic appearance and integration are improved, but the worktop becomes more susceptible to defects and liquid penetration

Engineering Contradiction:
Improveintegrated designVSAvoidworktop integrity
Core Design Contradiction:
ShapeVSReliability

Solution Approach 1:

The support structure is divided into a first support region (carrying induction units) and a second support region (carrying generator unit), separated by a liquid-tight separating device. This segmentation allows the thin worktop to maintain aesthetic integration while the separating device prevents liquid penetration to sensitive components below.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A liquid-tight separating device is introduced as an intermediary element between the induction units and the generator unit. This mediator prevents liquid that penetrates through the thin worktop from reaching the generator unit, thus protecting sensitive electronics while maintaining the overall integrated design.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If the generator unit is placed directly below the worktop for compact integration, then space utilization is improved, but the sensitive electronics are exposed to liquid and mechanical stress

Engineering Contradiction:
Improveintegration compactnessVSAvoidliquid exposure
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The support structure is segmented into distinct regions: a first support region directly below the worktop carrying induction units, and a second support region carrying the generator unit. The liquid-tight separating device creates a barrier between these regions, allowing compact vertical integration while protecting the generator unit from liquid exposure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The liquid-tight separating device acts as an intermediary barrier between the worktop area (where liquids may penetrate) and the generator unit (sensitive electronics). This mediator enables compact placement of the generator unit below the worktop while preventing harmful liquid contact.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If cables are routed directly from induction units to generator unit for simplicity, then connection complexity is reduced, but cables are exposed to mechanical stress and liquid ingress

Engineering Contradiction:
Improveconnection simplicityVSAvoidcable durability
Core Design Contradiction:
Device complexityVSStrength

Solution Approach 1:

Cables are routed through a cable guide structure that changes their spatial path, directing them away from areas of high mechanical stress and liquid exposure. The cable guide provides a protected pathway that maintains connection simplicity while enhancing cable durability through improved routing geometry.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 provides reliable and safe operation by protecting the sensitive components from liquids and mechanical stress, maintaining functionality even if the worktop leaks or is damaged, ensuring continuous safe operation of the hob module.

Implementation Method 1

The cooktop module comprises at least one induction unit

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

the induction unit is arranged above the support unit on the side of the support unit facing the worktop

Methodology Applied
Scientific EffectInduction heating: Induction Heating

Data Source

PatentEP3691412B1Cooking field module
Publication Date: 2022.09.14 MIELE & CO KG
  • EP3691412B1 patent drawingFigure 1~3
  • EP3691412B1 patent drawingFigure 4~6
  • EP3691412B1 patent drawingFigure 7~8

AI summary

A cooktop module (1) for installation below a worktop (200), comprising an induction unit (2), a generator unit (3) connected to the induction unit (2) via a line (4), and a support unit (5) on which the induction unit (2) and the generator unit (3) are mounted. The support unit (5) is designed as a liquid-tight separating device (6), wherein the induction unit (2) is arranged above the support unit (5) on the side (7) of the support unit (5) facing the worktop (200) when installed, and wherein the generator unit (3) is arranged below the separating device (6) on the side (8) facing away from the worktop (200).