Cooking device
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Solution Overview
Problem
Existing cooking devices face challenges in accurately and reproducibly detecting cooking parameters like temperature without contact, often requiring complex designs that increase complexity and may interfere with user operation or require specialized cookware.
Innovation Solution
A cooking device with a sensor system that includes a magnetic shielding device and a sealing device with low heat conduction materials, positioned closely below the hob plate for thermal insulation and electromagnetic shielding, allowing for contactless detection of temperature and protection from heat and dust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor device is positioned closely below the hob plate for accurate temperature detection, then the measurement precision is improved, but the sensor device is exposed to thermal radiation and heat from the heated hob plate, which deteriorates the reliability of the sensor
Solution Approach 1:
A sealing device made of thermally insulating material is introduced as an intermediary between the hob plate and the sensor device. This sealing device blocks thermal radiation and heat conduction paths, protecting the sensor device from thermal exposure while allowing the sensor to remain positioned closely below the hob plate for accurate temperature detection of cookware
2Measurement precision
If the sensor device is arranged below the hob plate, then the detection accuracy is improved, but the design complexity increases due to limited space and the need for thermal insulation and electromagnetic shielding
Solution Approach 1:
The sealing device combines multiple functions into a single component: it provides thermal insulation to protect the sensor device from heat, creates electromagnetic shielding between the sensor and induction coil, and serves as a structural element in the limited space below the hob plate. This merging of functions reduces the overall complexity of the sensor arrangement
3Reliability
If a sealing device for thermal insulation is provided between the hob plate and sensor device, then the sensor is protected from heat, but the electromagnetic interaction between the sensor and induction coil increases
Solution Approach 1:
The sealing device acts as a dual intermediary: it provides thermal insulation to protect the sensor from heat while simultaneously serving as an electromagnetic shield between the sensor device and the induction coil. The material properties of the sealing device block both thermal radiation and electromagnetic fields, addressing both harmful effects through a single protective barrier
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 provides accurate and reproducible temperature detection, reduces thermal radiation interference, and enhances mechanical and electromagnetic shielding, improving the reliability and safety of cooking device operations.
Implementation Method 1
At least one sealing device is provided for thermal insulation. At least part of the sealing device is arranged between at least part of the carrier device and at least part of the sensor device.
Implementation Method 2
WO 2008/148 529 A1 provides a thermal sensor below the hob plate, which detects thermal radiation and uses this to determine a temperature.
Implementation Method 3
The sensor device comprises at least one magnetic shielding device, the magnetic shielding device being designed and suitable for shielding against electromagnetic interactions and in particular for shielding against the electromagnetic field of the induction device.
Data Source
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AI summary
The device (1) comprises a cooking area (11) with a cooking point (21), a heating device (2) for heating a cooking zone (31) and a sensor device (3) for detecting a physical quantity in a detection area (83). The cooking area comprises a support element (5) for supporting a suitable food container. The sensor device is partially arranged below the support element. A sealing element is provided for thermal insulation such that a portion of sealing element is arranged between a portion of the support element and a portion of the sensor device.