Domestic appliance

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Solution Overview

Problem

Existing household appliances with treatment rooms face challenges in reliably detecting temperature signals wirelessly due to the need for high active power transmission, which requires complex and costly setups, especially when the sensor's position changes during cooking or temperature monitoring in various household appliances.

Innovation Solution

A domestic appliance with a coupling arrangement in the treatment room, connected to the antenna via a connecting device, serves as both a heater and a transmission/reception device for electromagnetic waves, ensuring homogeneous power distribution and reliable signal detection, using a capacitive connection and adjustable matching elements to optimize power transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If high active power is transmitted wirelessly to the radio sensor, then reliable temperature detection is achieved, but the technical complexity and cost increase

Engineering Contradiction:

Improvetemperature detection reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the heater and the coupling arrangement into a single integrated component. The heater serves dual purposes: providing thermal energy to the treatment room and acting as a coupling arrangement to improve the distribution of active power transmitted by the antenna. This merging eliminates the need for separate coupling devices, reducing technical complexity while maintaining reliable temperature detection.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The heater is designed to perform multiple functions simultaneously: it heats the treatment room and acts as a coupling arrangement for electromagnetic waves. This multi-functionality allows the system to achieve homogeneous power distribution and reliable signal detection without adding additional components, thereby reducing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the antenna is positioned to ensure homogeneous power transmission, then reliable signal detection is achieved, but the system requires high active power transmission

Engineering Contradiction:

Improvesignal detection reliabilityVSAvoidactive power transmission

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The coupling arrangement (heater) acts as an intermediary between the antenna and the treatment room environment. It receives electromagnetic energy from the antenna and redistributes it more uniformly throughout the treatment room, improving signal detection reliability while reducing the total active power required from the antenna.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The coupling arrangement modifies the distribution parameters of electromagnetic energy in the treatment room. By changing how energy is distributed spatially through the heater's interaction with electromagnetic waves, the system achieves more homogeneous power transmission with lower overall power requirements.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If the sensor position changes during cooking, then flexible monitoring is achieved, but the antenna must transmit correspondingly high power to maintain detection reliability

Engineering Contradiction:

Improvesensor position flexibilityVSAvoidactive power transmission

Core Design Contradiction:

Adaptability or versatilityVSPower

Solution Approach 1:

The coupling arrangement creates a more uniform energy distribution throughout the treatment room, effectively creating equipotential conditions for electromagnetic energy. This allows the radio sensor to operate reliably at various positions without requiring the antenna to increase power transmission, as energy is evenly distributed throughout the space.

Inventive Principle:

Principle #12Equipotentiality

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 solution enables reliable and efficient active power transmission and signal detection within the treatment room, reducing technical complexity and ensuring effective operation of household appliances with minimal effort, regardless of the sensor's location, thus guaranteeing consistent performance.

Implementation Method 1

a coupling arrangement is provided in the treatment room, which is in operative connection with the antenna via a connecting device. The coupling arrangement serves as a transmission and/or reception device for electromagnetic waves.

Methodology Applied

Scientific EffectElectromagnetic coupling: Electromagnetic Induction

Implementation Method 2

using a capacitive connection and adjustable matching elements to optimize power transmission

Methodology Applied

Scientific EffectCapacitive coupling: Capacitance

Implementation Method 3

The coupling arrangement is designed as a heater... ensures a correspondingly more homogeneous distribution of z. B. irradiated active power

Methodology Applied

Scientific EffectElectromagnetic heating: Dielectric Heating

Data Source

PatentEP2662629B1Domestic appliance

Publication Date: 2017.10.04 MIELE & CO KG

Figure 1~2
Figure 3~5
Figure 6~7

AI summary

Domestic appliance (1) with a treatment room (2) which is assigned an antenna (3). A coupling arrangement (4) is provided in the treatment room (2), which is operatively connected to the antenna (3) via a connecting device (5).