Brazed Induction Cookware Base for Even Heating and Labeling
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Solution Overview
Problem
Aluminum cooking utensils are not compatible with induction cooking due to lack of ferromagnetic material, leading to uneven heating, reduced heating area, and difficulties in manufacturing and labeling.
Innovation Solution
A brazed induction heating cooking utensil with a thermal distribution plate made of ferromagnetic stainless iron, featuring a single central hole and inward fold-over structure for even heating and easy positioning, allowing for direct induction use and product labeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a thermal distribution plate with multiple holes is used to enable induction heating, then the utensil can be heated on induction cooking plates, but the real heating area is compromised significantly
Solution Approach 1:
The patent divides the thermal distribution plate into functional zones: a central hole for induction heating compatibility and peripheral lugs for structural support. This segmentation allows the plate to maintain large continuous heating area while enabling induction heating through the central hole.
Solution Approach 2:
The patent applies different properties to different parts of the thermal distribution plate: the central region has a hole for magnetic field penetration and induction heating, while the peripheral regions have lugs for mechanical support and positioning. This local differentiation resolves the contradiction between heating area and induction compatibility.
2Adaptability or versatility
If the bottom is wrapped with a bottom-wrapping plate for induction heating, then induction heating is enabled, but production indications cannot be carved onto the pot bottom
Solution Approach 1:
The patent extracts the labeling function from the bottom-wrapping plate by providing a groove on the outer surface of the pot bottom where product information can be directly carved. This separates the induction heating function (performed by the thermal distribution plate) from the labeling function, resolving the contradiction.
3Strength
If the bottom-wrapping plate is brazed to the aluminum bottom, then a composite structure is formed, but positioning is difficult leading to position offset
Solution Approach 1:
The patent incorporates positioning lugs and corresponding grooves as preliminary positioning features before brazing. These features are pre-formed on the pot bottom and thermal distribution plate respectively, ensuring accurate alignment is achieved before the brazing process begins, thus preventing position offset.
Solution Approach 2:
The positioning lugs act as intermediary elements between the pot bottom and thermal distribution plate during brazing. They provide mechanical guidance and alignment, ensuring precise positioning while the brazing material forms the final strong bond.
4Ease of manufacture
If multiple holes are provided in the thermal distribution plate for connection, then the structure can be assembled, but the heating area is reduced
Solution Approach 1:
The patent segments the connection function from the heating surface by providing a single central hole for induction heating compatibility and moving connection features (lugs) to the peripheral regions. This allows the majority of the plate surface to remain continuous and effective for heating.
Solution Approach 2:
The patent relocates connection features from the two-dimensional heating surface to the peripheral region, utilizing the edge dimension of the plate. This dimensional relocation preserves the heating area while maintaining assembly capability through lugs that extend to the plate perimeter.
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
Ensures even heating, prevents overheating, allows for product labeling, and simplifies the brazing process by facilitating accurate alignment and reducing material overflow.
Implementation Method 1
the thermal distribution plate is made of ferromagnetic heat conducting material
Implementation Method 2
the thermal distribution plate is made of ferromagnetic heat conducting material
Implementation Method 3
brazed induction heating cooking utensil
Implementation Method 4
the outer surface of the bottom of the utensil body is brazed with a transition material and is connected with the inner surface of a thermal distribution plate via brazing
Data Source
Figure 1~2
Figure 3
AI summary
The current invention is related with a brazed induction heating cooking utensil, comprising a utensil body made from a first material, wherein the outer surface of the bottom of the utensil body is brazed with a transition material and is connected with the inner surface of a thermal distribution plate via brazing, wherein the thermal distribution plate is made of ferromagnetic heat conducting material. The outer surface of the bottom of the utensil body is provided with a groove in the middle, wherein the bottom of the groove is further surrounded with a circular groove, wherein the circular groove is a further extension of the depth of said groove. The thermal distribution plate is provided with a hole in the middle, the form and the position of which corresponds with said groove, wherein the hole is surrounded by an inward fold-over structure, the size and position of which corresponds with the circular groove, wherein when the thermal distribution plate is brazed with the outer surface of the bottom of the utensil body, the inward fold-over structure extends into said groove or inserts into the circular groove. The product of the current invention features a big and even heating area. The bottom of the product of the current invention can be carved with product labels, which is tasteful. The ferromagnetic heat conducting material is easy to be positioned during manufacture and can prevent an overflow of the brazing material.