Glass Ceramic Worktop Hob Integration for Moisture-Tight Maintenance

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Solution Overview

Problem

Existing kitchen worktop arrangements with cooking hobs integrated into the countertop face challenges in maintaining humidity tightness, ease of maintenance, and aesthetics, as profile and frame elements used to secure the hob often fail to prevent moisture and dirt ingress and disrupt the design's appearance.

Innovation Solution

A kitchen worktop arrangement featuring a glass ceramic plate with a cooking hob assembly embedded in a cut-out, utilizing a bearing section and mounting interfaces for secure and releasable coupling, allowing for easy maintenance and a flush, easy-to-clean surface while maintaining humidity tightness without disturbing the design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If profile and frame elements are used to secure the cooking hob and prevent moisture ingress, then the cooking hob is secured and moisture protection is improved, but the overall appearance is disturbed and the design uniformity deteriorates

Engineering Contradiction:
Improvemoisture protectionVSAvoidappearance uniformity
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The patent removes the traditional profile and frame elements that disturbed the appearance. Instead, it extracts only the essential sealing function and integrates it directly into the cut-out structure of the worktop plate, creating a flush-mounted appearance while maintaining moisture protection.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the sealing function with the structural cut-out itself. The recess in the worktop plate serves dual purposes: it provides the mounting structure for the cooking hob and simultaneously creates the moisture barrier, eliminating the need for separate profile elements.

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If profile and frame elements are used to secure the cooking hob, then the cooking hob is stabilized, but moisture and dirt still enter the interspace and accumulate along the profile elements

Engineering Contradiction:
Improvecooking hob stabilizationVSAvoidmoisture and dirt ingress
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a sealing bead as an intermediary element between the cooking hob and the worktop plate. This sealing bead prevents moisture and dirt from reaching the interspace while allowing the cooking hob to remain securely mounted.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of using profile elements that extend outward to prevent moisture ingress, the patent inverts the approach by creating a recess that directs moisture away from the interspace. The sealing is achieved by preventing moisture access rather than blocking it with protruding elements.

Inventive Principle:
Principle #13The other way round (Inversion)

3Shape

If the cooking hob is flush-mounted without profile elements, then the appearance is improved and cleaning is easier, but the cooking hob becomes difficult to secure and maintain

Engineering Contradiction:
Improveflush-mounted appearanceVSAvoidmaintenance accessibility
Core Design Contradiction:
ShapeVSEase of repair

Solution Approach 1:

The patent segments the cooking hob assembly into separable components that can be independently accessed. The mounting interfaces are designed to allow removal of the cooking hob from the recess without damaging the worktop plate or requiring complete disassembly of the worktop structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates a mounting system where the cooking hob can be easily inserted and removed from the recess through simple mechanical interfaces. The recess geometry and mounting interfaces are designed to provide equal ease of access for both installation and maintenance operations.

Inventive Principle:
Principle #12Equipotentiality

4Ease of repair

If the entire cooking hob is dismounted for maintenance, then the components can be accessed, but the worktop structure is compromised and reassembly is complex

Engineering Contradiction:
Improvecomponent accessibilityVSAvoidreassembly complexity
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The patent enables segmentation of the cooking hob from the worktop plate through designed mounting interfaces. This allows the cooking hob to be removed as a complete assembly for maintenance while preserving the integrity of the worktop plate and recess structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent incorporates preliminary design features in the mounting interfaces that facilitate easy removal and reinstallation. The mechanical interfaces are pre-configured to guide the cooking hob into and out of the recess without requiring complex alignment procedures or specialized tools.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3228940B1Kitchen worktop arrangement and assembling method thereof
Publication Date: 2019.06.26 ELECTROLUX APPLIANCES
  • EP3228940B1 patent drawingFigure 1A
  • EP3228940B1 patent drawingFigure 1B
  • EP3228940B1 patent drawingFigure 2

AI summary

A kitchen worktop arrangement (1), comprising - a glass ceramic worktop plate (3) having a top side (81), and a bottom side (82) averted from the top side (81), and being attached with its bottom side (82) to the top side of a supporting plate (2); - the supporting plate (2) comprising at least one cut-out (E) for arranging a cooking hob assembly (7),- the cooking hob assembly (7) being arranged at the bottom side (82) of the glass ceramic worktop plate (3) in a section of the cut-out (E), the cooking hob assembly (7) defining a cooking section (6) of the glass ceramic worktop plate (3),wherein the worktop plate (3) comprises at least one bearing section (10) projecting beyond the cooking section (6) of the worktop plate (3), the bottom side of the bearing section (10) being attached to the top side of the supporting plate (2); andwherein at least one mounting interface (12) is secured at or to the bottom side (82) of the glass ceramic worktop plate (3) within or in the area of the cooking section (6) for releasable coupling one or more components (7, 22) of the hob assembly (7) to the bottom side (82).