Ferromagnetic Insert Curie Temperature Cooking Control

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Solution Overview

Problem

Existing cooking systems fail to effectively regulate the temperature of food or drinks based on the temperature of the cooking container, and are limited to specific types of heating devices, lacking compatibility with various heating means.

Innovation Solution

A cooking system comprising a ferromagnetic insert with a determined Curie temperature and a heating device with a movable magnet that changes positions based on the insert's temperature, allowing for temperature regulation by controlling heating, compatible with any type of heating means.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing temperature limiting devices are used, then safety function is improved, but they limit cooking zone temperature instead of container temperature

Engineering Contradiction:
Improvesafety functionVSAvoidtemperature measurement location
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent uses a magnet as an intermediary that bridges the cooking zone and the detection means. The magnet is positioned in the cooking zone near the container, and when the insert reaches Curie temperature, the magnet detects the magnetic state change and triggers the detection means to cut off heating, ensuring the container temperature is directly monitored.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements a feedback mechanism where the detection means continuously monitors the magnetic state of the insert through the magnet and provides real-time feedback to the control system. When the insert reaches Curie temperature, the feedback signal triggers heating cutoff, ensuring precise temperature control based on actual container temperature.

Inventive Principle:
Principle #23Feedback

2Measurement precision

If a movable magnet with detection means is added to the heating device, then temperature control precision is improved, but device complexity increases

Engineering Contradiction:
Improvetemperature control precisionVSAvoidheating device structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the complex detection and control functions from the heating device structure and places them in a separate detection device. The heating device only needs to provide a magnet in the cooking zone, while the detection means with sensor and control circuitry are separate, reducing the complexity of the heating device itself.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables the system to self-regulate temperature automatically. The detection means automatically detects when the insert reaches Curie temperature through the magnet and automatically cuts off heating, eliminating the need for manual temperature monitoring and control by the user.

Inventive Principle:
Principle #25Self-service

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 precise temperature control of food or drinks within the container by adjusting heating based on the insert's magnetic attraction, ensuring safe and efficient cooking across different heating technologies.

Implementation Method 1

a ferromagnetic insert at a predetermined Curie temperature disposed in the body

Methodology Applied
Scientific EffectCurie temperature effect: Curie Point (ferromagnetic)

Implementation Method 2

the magnet being movable between a first proximal position of the insert and a second distal position of the insert

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Implementation Method 3

heating means, said heating means being capable of heating the cooking vessel and its insert

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentEP3636045B1Cooking system
Publication Date: 2023.11.22 SEB SA
  • EP3636045B1 patent drawingFigure 1~2
  • EP3636045B1 patent drawingFigure 3~5

AI summary

The present invention relates to a cooking system comprising a cooking vessel and a heating device (1) for the cooking vessel (10) to be positioned at a determined location (2) of the heating device (1) in which said cooking vessel (10) is capable of being positioned to be heated by said heating device (1), said cooking vessel (10) comprising a body (11) and a ferromagnetic insert (20) having a determined Curie temperature (TC) arranged in the body (11), said heating device (1) having a first operating mode (F1) in which the heating of the cooking vessel (10) is allowed, and a second operating mode (F2) in which the heating of the cooking vessel (10) is prohibited.