Induction heating device and induction hob comprising an induction heating device of this kind

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Solution Overview

Problem

Existing induction heating devices and hobs face challenges in easily achieving electrical connections during assembly due to the deep plane of the induction heating coils, leading to complex and unreliable connections.

Innovation Solution

A flat coil carrier with a plug-type contact device featuring a movable plug housing that compensates for positional tolerances, allowing flexible movement perpendicular to the coil surface, and a contact-making line that connects the plug-type contacts to the induction heating coils, enabling reliable and simplified electrical connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the induction heating coils are positioned in a deep plane within the induction hob, then the electrical connection becomes difficult to achieve during assembly, but maintaining the coil position is necessary for the device structure

Engineering Contradiction:

Improveease of electrical connection during assemblyVSAvoidcomplexity of electrical connection structure

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The plug housing is designed to be movable relative to the coil carrier in a direction perpendicular to the insertion direction, allowing dynamic adjustment during assembly to compensate for positional tolerances and facilitate electrical connection without requiring complex positioning mechanisms

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The contact-making line acts as an intermediary flexible electrical connection between the plug-type contacts and the induction heating coils, enabling reliable electrical connection while accommodating the deep plane positioning and movement of the plug housing

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the plug-type contact device is fixed rigidly to the coil carrier, then the connection is stable, but positional tolerances cannot be compensated

Engineering Contradiction:

Improvereliability of electrical connectionVSAvoidcompensation for positional tolerances

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The contact-making line is designed as a flexible electrical connection that can bend and stretch, allowing it to accommodate movements of the plug housing and maintain reliable electrical connection despite positional variations and tolerances

Inventive Principle:

Principle #30Flexible shells and thin films

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 simplifies and stabilizes the assembly process by allowing for tolerance compensation and secure electrical connections, enhancing the reliability and ease of attachment between the induction heating device and the hob.

Implementation Method 1

induction heating coil

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

induction heating coil

Methodology Applied

Scientific EffectEddy currents: Eddy Currents

Implementation Method 3

induction heating coil

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 4

the plug housing can move or has an ability to move in a plane parallel to the surface of the coil carrier

Methodology Applied

Scientific EffectMechanical movement:

Implementation Method 5

a contact-making line is further provided, the contact-making line preferably running freely and being flexible. The contact-making line runs on the plug-type contact to the induction heating coil

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS10342075B2Induction heating device and induction hob comprising an induction heating device of this kind

Publication Date: 2019.07.02 E G O ELEKTRO GERAETEBAU GMBH

AI summary

An induction heating device including two induction heating coils and a plug-type contact device has a flat coil carrier for the induction heating coils, the plug-type contact device being arranged on the bottom face of the coil carrier with an insertion direction perpendicular to the surface of the coil carrier. The plug-type contact device has, on the bottom face of the coil carrier, a plug housing being movable with a defined movement travel in a plane parallel to the surface of the coil carrier. The plug housing has four receiving chambers being open at the bottom and having a direction of extent parallel to the insertion direction, in each of which a plug-type contact is arranged. A contact-making line runs from the plug-type contact to the induction heating coil.