Cooking vessel, cooking system and method for operating
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Solution Overview
Problem
Existing cookware sensors are often disrupted by external electromagnetic fields, leading to unreliable temperature measurements and inhomogeneous cooking results due to interference.
Innovation Solution
Incorporating magnetic field sensors on the cookware walls to detect and measure electromagnetic interference, allowing for correction of temperature readings and ensuring precise cooking through a control unit that accounts for electromagnetic field effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a temperature sensor is assigned to the wall of the cookware to monitor cooking temperature, then the cooking process can be automatically controlled, but the temperature measurement is influenced and disturbed by external electromagnetic interference fields, reducing measurement reliability
Solution Approach 1:
A magnetic field sensor is introduced as an intermediary component to detect electromagnetic interference fields. This mediator allows the system to identify when interference is present and trigger corrective actions, such as switching to alternative measurement methods or adjusting cooking parameters, thereby preserving temperature measurement accuracy without sacrificing automatic control capability
Solution Approach 2:
The system implements feedback by continuously monitoring magnetic field strength and using this information to adjust temperature measurement and control strategies. When electromagnetic interference is detected, the system responds by compensating for the interference effect or switching to alternative sensing approaches, maintaining measurement precision while preserving automated operation
2Reliability
If electromagnetic interference fields are present next to the cookware, then local heating of the wall may occur, but this interference is difficult to detect and measure reliably
Solution Approach 1:
The system replaces direct temperature-based interference detection with magnetic field-based detection. Instead of trying to detect interference through temperature changes (which is indirect and unreliable), a magnetic field sensor directly measures the electromagnetic interference field strength, making detection straightforward and reliable
Solution Approach 2:
The magnetic field sensor serves as an intermediary detection device that directly measures electromagnetic interference fields before they can affect the cooking process. This allows for early detection and proactive compensation, maintaining cooking reliability
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 correction of electromagnetic interference, ensuring precise and homogeneous cooking by adjusting temperature measurements and cooking profiles.
Implementation Method 1
The magnetic field sensor (4) is assigned to the wall (3) and/or handle (14) in order to determine a magnetic field strength of an electromagnetic interference field
Implementation Method 2
The hob device comprises at least one support surface (101) for placing cookware and at least one induction coil (102), wherein the induction coil provides at least one electromagnetic field for heating the placed cookware
Data Source
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Figure 3~4
Figure 5
AI summary
Cookware (1) comprising a base (2), a wall (3), and a magnetic field sensor (4), wherein the base (2) and the wall (3) define a receiving volume (5). The magnetic field sensor (4) is located on the wall (3) to determine the magnetic field strength of an electromagnetic interference field, thus enabling an estimation of the effect of the electromagnetic interference field on the wall (3). Cooking system (200) comprising a control unit (50), a cooktop assembly (100), and cookware (1) according to the invention. The cooktop assembly (100) comprises a platform (101) for placing cookware (1) and an induction coil (102), wherein the induction coil (102) provides an electromagnetic field (103) for heating the placed cookware (1).The control device (50) is suitable and configured to draw conclusions about the expected heating of the wall (3) by the electromagnetic field (103) based on a value (10) of an electromagnetic field strength determined by the magnetic field sensor (4). Method for operating a cooking system (200) according to the invention, wherein the magnetic field sensor (4) determines a value (10) of an electromagnetic field strength and wherein the control device (50) draws conclusions about the expected heating of the wall (3) by the electromagnetic field (103) based on the determined value (10).