Magnetic Stirrer Heater Layout for Automated Induction Cooking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing kitchen appliances lack a reliable and efficient method for automatic stirring during induction heating, particularly for ferromagnetic cooking vessels, which can lead to inefficient energy use and risk of food burning due to constant attention required for stirring viscous substances.
Innovation Solution
A combined heating and stirring arrangement using a magnetic and electrical stirring device propelled by a magnetic field, with a non-ferromagnetic cooking vessel to allow controlled magnetic field distribution, and a propelling mechanism based on magnetic attraction and repulsion, utilizing multiple coils and ferrite guides for efficient energy focusing and stirring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magnetic stirrer is used with induction heating in a ferromagnetic cooking vessel, then the stirring function is achieved, but the magnetic field is distorted and heating efficiency is reduced
Solution Approach 1:
A non-magnetic, non-conductive cooking vessel is introduced as an intermediary between the induction heating source and the ferromagnetic cooking vessel. This intermediary allows the magnetic field to pass through undistorted for stirring purposes while the induction heating directly heats the food contents, bypassing the need for heat transfer through the ferromagnetic vessel wall which would distort the magnetic field.
Solution Approach 2:
The system separates the stirring function and heating function into independent components. The magnetic stirrer operates independently using magnetic fields that pass through the non-magnetic vessel, while induction heating independently heats the food through electromagnetic induction. This segmentation allows both functions to operate optimally without interfering with each other.
2Temperature
If a thermally conducting cooking surface is used, then heat transfer from heating device to cooking vessel is enabled, but thermal energy is drawn out of the cooking vessel reducing cooking efficiency
Solution Approach 1:
A non-thermally conducting cooking surface material is used as an intermediary layer. This material allows magnetic fields to pass through for stirrer operation while preventing thermal energy from being drawn out of the cooking vessel, thereby maintaining cooking efficiency and energy retention within the vessel.
3Temperature
If induction heating is used with ferromagnetic vessels, then heating is achieved, but the magnetic field is absorbed by the vessel reducing stirring effectiveness
Solution Approach 1:
A non-magnetic, non-conductive cooking vessel serves as a mediator that allows magnetic fields to pass through to the ferromagnetic stirrer without being absorbed or distorted by the vessel itself. This enables effective stirring while induction heating simultaneously heats the food contents directly.
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 efficient, energy-saving, and highly controllable heating and stirring of food, preventing burning and simplifying the cooking process by allowing automated control of heating and stirring speed, reducing the need for constant attention and minimizing appliance components.
Implementation Method 1
the heating mechanism is based on magnetic induction, as in this manner the food can be heated in an energy-efficient and highly controllable manner
Implementation Method 2
a propelling mechanism based on magnetic attraction and repulsion
Implementation Method 3
the guide of the magnetic field lines is made of ferrite material, which is highly suitable for guiding magnetic field lines and thus leads to a high efficiency of the magnetic propelling mechanism
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention discloses a facilitated cooking method which allows it to stir and heat food on the basis of magnetic fields preferably respectively by induction cooking. A magnetic stirrer heater (110) is preferably propelled by coils (125, 128) and heated by an induction coil (110). A corresponding arrangement and a magnetic stirrer heater are disclosed as well. The combined heating and stirring arrangement can be used for automated cooking by carrying out the stirring and heating of the food according to a time schedule.