Kitchen appliance, functional element for a kitchen appliance and data communication method

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Solution Overview

Problem

Kitchen appliance accessories often interfere with or are shielded from the control unit, disrupting direct wireless communication, which hinders the detection and identification of accessories, affecting safety and functionality.

Innovation Solution

A functional element with a bridge unit that relays wireless data communication between accessories and the control unit, overcoming shielding spaces using an accessory section and a control section, potentially with coil antennas or NFC/Bluetooth interfaces, to enable reliable detection and identification of accessories.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a direct wireless communication path between accessory and control unit is used, then communication simplicity is improved, but communication reliability deteriorates due to shielding interference

Engineering Contradiction:
Improvecommunication path structureVSAvoidcommunication reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent introduces a bridging unit as an intermediary component that relays communication signals between the accessory and control unit. The bridging unit includes a first communication means in the shielded area that receives signals from the accessory, and a second communication means outside the shielded area that transmits signals to the control unit, thereby overcoming the shielding interference without requiring a completely complex communication architecture

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If shielding space is used to separate accessory from control unit, then functional safety is improved, but communication capability deteriorates

Engineering Contradiction:
Improveinterference protectionVSAvoiddata communication
Core Design Contradiction:
Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The communication system is segmented into two distinct parts: a first communication means located within the shielded area that interfaces with the accessory, and a second communication means located outside the shielded area that interfaces with the control unit. This segmentation allows the shielding to protect against interference while communication is maintained through the segmented pathway via the bridging unit

Inventive Principle:
Principle #1Segmentation

3Reliability

If accessory detection is implemented, then functional safety is improved, but device complexity increases

Engineering Contradiction:
Improveaccessory detection reliabilityVSAvoidcommunication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The bridging unit is designed to perform multiple functions: it maintains wireless communication between the accessory and control unit despite shielding, enables accessory detection and identification, and can potentially support multiple accessories simultaneously. This multi-functionality reduces the need for separate dedicated systems for each function, thereby limiting the increase in overall device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enables reliable detection and identification of accessories, improving safety and functionality by maintaining communication despite shielding, and allowing for automated recognition of required accessories, while reducing interference and installation complexity.

Implementation Method 1

a bridge unit for overcoming a shielding space of the kitchen appliance for wireless data communication between an accessory (2) and a control unit (30)

Methodology Applied
Scientific EffectElectromagnetic wave transmission: Electromagnetic Induction

Data Source

PatentEP3841926B1Kitchen appliance, functional element for a kitchen appliance and data communication method
Publication Date: 2023.05.31 VORWERK & CO INTERHOLDING GMBH
  • EP3841926B1 patent drawingFigure 1~2
  • EP3841926B1 patent drawingFigure 3
  • EP3841926B1 patent drawingFigure 4

AI summary

The invention relates to a functional element (10) for a kitchen appliance (1) comprising a functional area (11) for a function of the kitchen appliance (1), and a bridge unit (13) for overcoming a shielding space (20) of the kitchen appliance (1) that separates an accessory (2) of the kitchen appliance (1) from a control unit (30) of the kitchen appliance (1) for wireless data communication between the accessory (2) and the control unit (30). The invention further relates to a kitchen appliance (1) and a method (100).