Dual Insulation Unit for Induction Cooktop Light Electrical Isolation

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Solution Overview

Problem

Existing insulation units in induction cooktops are inadequate to meet safety standards due to decreasing distances between induction heating units, LEDs, and electronics, leading to insufficient electrical insulation and potential safety risks.

Innovation Solution

A cooking device with a dual insulation unit comprising two flat insulation elements, one positioned underneath and the other above the light unit, providing comprehensive electrical insulation and improved stability, while maintaining a space-saving design and reducing material and manufacturing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single insulation unit is used, then the structure is simple, but the electrical insulation is insufficient to meet safety standards

Engineering Contradiction:
Improveelectrical insulationVSAvoidinsulation unit structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The insulation unit is divided into multiple separate insulation elements (first insulation element, second insulation element, third insulation element) that are positioned at different locations. This segmentation provides comprehensive electrical insulation between the electronics unit, induction heating unit, and light unit, meeting safety standards while keeping each individual insulation element simple in structure.

Inventive Principle:
Principle #1Segmentation

2Reliability

If insulation distance is increased, then electrical insulation is improved, but the space consumption increases

Engineering Contradiction:
Improveelectrical insulationVSAvoidspace consumption
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

Instead of uniformly increasing insulation distance throughout the entire device, the patent applies insulation elements locally at specific critical locations where electrical insulation is needed (between electronics unit, induction heating unit, and light unit). This provides adequate electrical insulation where required while minimizing overall space consumption.

Inventive Principle:
Principle #3Local quality

3Reliability

If multiple insulation elements are used, then electrical insulation is enhanced, but the manufacturing cost increases

Engineering Contradiction:
Improveelectrical insulationVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent uses multiple insulation elements that are homogeneous in material composition (all made from electrically insulating material). This allows for standardized manufacturing processes and material sourcing, reducing overall manufacturing cost despite using multiple elements, while still providing enhanced electrical insulation.

Inventive Principle:
Principle #33Homogeneity

Data Source

PatentUS11102849B2Cooking device and method for producing a cooking device
Publication Date: 2021.08.24 BSH HAUSGERATE GMBH
  • US11102849B2 patent drawing
  • US11102849B2 patent drawing

AI summary

A cooking device includes a light unit and an insulation unit configured to electrically insulate the light unit. The insulation unit includes a first insulation element and a second insulation element, with the light unit being at least partially arranged between the first insulation element and the second insulation element.