Induction Cooking Pan with Impact-Bonded Ferromagnetic Base Layer
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Solution Overview
Problem
Conventional cooking pans are not compatible with induction cooking devices, as they require ferromagnetic materials, limiting the use of non-ferromagnetic materials like copper, glass, and aluminum without the availability of a ferromagnetic interface disc.
Innovation Solution
The development of an induction cooking pan with a ceramic inner coated portion and a metallic outer portion, specifically featuring a stainless steel plate with punched openings that are either impact bonded or extruded onto an aluminum pan, allowing for efficient heat transfer and compatibility with induction cooktops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ferromagnetic materials are used for induction cooking compatibility, then the pan works with induction devices, but the heat distribution and material options are limited
Solution Approach 1:
The pan applies different material properties to different regions: the stainless steel base layer provides ferromagnetic properties for induction compatibility, while the aluminum body provides superior heat distribution. This local differentiation of material qualities resolves the contradiction between induction compatibility and heat distribution efficiency.
2Adaptability or versatility
If a ferromagnetic interface disc is used with non-ferromagnetic pans, then induction compatibility is achieved, but the solution is not always available or desirable
Solution Approach 1:
The ferromagnetic stainless steel base layer is merged directly into the pan structure, combining the induction compatibility function with the pan body itself. This eliminates the need for separate interface discs or additional components, reducing device complexity while maintaining induction compatibility.
3Temperature
If aluminum pans are used, then heat distribution is improved, but they cannot be used with induction cooking devices
Solution Approach 1:
The pan combines aluminum material (for heat distribution) with a stainless steel base layer (for induction compatibility), creating a composite structure that simultaneously achieves both heat distribution efficiency and induction cooking compatibility.
4Adaptability or versatility
If stainless steel pans are used, then durability and induction compatibility are achieved, but heat distribution is limited compared to aluminum
Solution Approach 1:
The pan uses stainless steel locally at the base layer for induction compatibility and durability, while the main body is made of aluminum for superior heat distribution. This local differentiation allows the pan to achieve both induction compatibility and efficient heat distribution.
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
The solution enables the use of non-ferromagnetic materials like aluminum and stainless steel pans on induction cooktops, providing improved heat distribution and compatibility, while maintaining ease of cleaning and safety features.
Implementation Method 1
An alternating electric current flows through the coil, which produces an oscillating magnetic field. This oscillating magnetic field induces a magnetic flux with a resulting eddy current in the cooking pot equivalent to the electric current in the coil. The eddy current in the metal pot then produces resistive heating which heats the foodstuff in the pot or pan.
Implementation Method 2
The eddy current in the metal pot then produces resistive heating which heats the foodstuff in the pot or pan.
Implementation Method 3
the second metallic outer portion can include: a generally circular shape and can include a plurality of punched openings therethrough; and wherein the plurality of punched openings have been at least one of: impact bonded into a lower surface of the first metallic portion
Implementation Method 4
the second metallic outer portion can include: a generally circular shape and can include a plurality of punched openings therethrough; and wherein the plurality of punched openings have been at least one of: impact bonded into a lower surface of the first metallic portion; or extruded into a lower surface of the first metallic portion
Data Source
AI summary
In an exemplary embodiment, an induction cooking pan can include: a pan; a handle coupled to the pan; wherein the pan can include: a ceramic inner coated portion; a first metallic outer portion; and a second metallic outer portion; wherein the second metallic outer portion is at least one of extruded or impact bonded to the first metallic outer portion; wherein the second metallic outer portion can include: a generally circular shape and can include a plurality of punched openings therethrough; and wherein the plurality of punched openings have been at least one of: impact bonded into a lower surface of the first metallic portion; or extruded into a lower surface of the first metallic portion; and wherein the first and second metallic outer portions have been machined substantially smooth.