Induction Hob Coil Mounting via Direct Adhesive Bonding
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Solution Overview
Problem
Existing induction hobs face challenges in efficient, cost-effective, and simple assembly, particularly due to complex positioning and attachment methods for induction heating coils, which increase costs and error-prone processes with multiple variants.
Innovation Solution
The induction heating coils are directly glued to the underside of the hob plate as a structural unit, using spacers for stability and adhesive for secure attachment, eliminating the need for complex positioning means and allowing for automated gluing, with additional features like electrical and thermal insulation and a detachable cover for easy access and repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shielding elements are attached to latching elements and a cover unit is attached underneath, then the induction hob can be assembled with proper shielding and structural support, but additional effort and positioning problems arise
Solution Approach 1:
The patent combines the shielding element, latching element, and support function into a single integrated component that attaches directly to the hob plate. This merging eliminates the need for separate shielding elements and cover units, reducing assembly steps and positioning complexity while maintaining structural support and shielding functionality.
Solution Approach 2:
The integrated component serves multiple functions simultaneously: it provides electromagnetic shielding, structural support for the induction coil, and a mounting interface for attachment to the hob plate. This multi-functionality replaces the need for multiple separate components, simplifying the overall assembly process.
2Ease of manufacture
If the induction heating coil is directly glued to the underside of the hob plate, then assembly is simplified and costs are reduced, but the coil cannot be easily removed for replacement
Solution Approach 1:
The patent incorporates a detachable cover as a preliminary design feature that provides future access to the induction heating coil. This preliminary action anticipates potential repair needs and establishes an access pathway before any repair is required, allowing the coil to be replaced without damaging the hob plate or other components.
Solution Approach 2:
The hob is divided into separable components: the hob plate with glued coil assembly forms one segment, while a detachable cover forms another segment. This segmentation allows the coil to remain permanently fixed to the hob plate for stability, while the cover can be removed to enable coil replacement when necessary.
3Manufacturing precision
If multiple positioning means and holding means are used, then precise positioning of induction heating coils is achieved, but costs increase and the process becomes error-prone with multiple variants
Solution Approach 1:
The patent integrates positioning features directly into the hob plate structure and the attached component, eliminating the need for separate positioning means and holding means. The integrated component includes built-in positioning elements that ensure accurate coil placement without requiring additional auxiliary parts, thereby reducing complexity and variant management.
4Reliability
If receiving plates and springs are used to hold induction heating coils, then the coils can be positioned and pressed against the hob plate, but additional parts and complex assembly are required
Solution Approach 1:
The patent merges the functions of the receiving plate, spring pressure mechanism, and shielding element into a single integrated component that attaches directly to the hob plate. This integration maintains the necessary pressure and positioning functions while eliminating multiple separate parts, thereby reducing assembly complexity.
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 method simplifies the assembly process, reduces costs, and ensures reliable, efficient, and quick installation, with improved stability and accessibility for maintenance, while maintaining precise positioning and efficient heat management.
Implementation Method 1
The induction heating coils themselves are glued as a structural unit directly to the underside of the hob plate
Data Source
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AI summary
An induction cooktop comprises a cooktop surface with a top and a bottom, at least one induction heating coil beneath the cooktop surface, and a cover beneath the cooktop surface, the cover overlapping and covering the at least one induction heating coil from below. The induction heating coil is either directly bonded to the underside of the cooktop surface, or a mounting plate is directly bonded to the underside of the cooktop surface, the mounting plate containing exactly one or exactly two induction heating coils.