Concavo-Convex Cookware Coating for Heat Transfer and Non-Stick Durability
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Solution Overview
Problem
Existing cooking vessels face issues with non-stick coatings deteriorating due to scratches, difficulty in processing concentric projections for enhanced heat transfer, and increased manufacturing costs from printing techniques, especially on curved surfaces, while also dealing with environmental hazards from PFOA in Teflon coatings.
Innovation Solution
A cooking vessel with a concavo-convex coating layer on both inner and outer surfaces, featuring specific projection patterns and honeycomb shapes, combined with a non-stick ceramic coating that enhances heat transfer, prevents slipping, and facilitates easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a ceramic coating agent is applied to the inner surface of the cooking vessel, then non-stick function is provided and safety is improved, but the non-stick function deteriorates due to scratches after a predetermined use period
Solution Approach 1:
The coating layer is divided into multiple layers: a lower ceramic coating layer providing safety and non-stick function, and an upper Teflon coating layer enhancing non-stick durability. This segmentation allows each layer to perform its specialized function, with the Teflon layer protecting the ceramic layer from scratches while maintaining safety.
Solution Approach 2:
The patent uses a composite coating structure combining ceramic coating and Teflon coating. The ceramic coating provides safety and basic non-stick properties, while the Teflon coating enhances non-stick durability and scratch resistance. This composite approach leverages the strengths of both materials to resolve the contradiction between safety and durability.
2Ease of operation
If concentric projections are formed on the bottom surface of the cooking vessel, then slipping is prevented, but it is difficult to process the projections together during the printing process
Solution Approach 1:
The patent combines the projection formation process with the printing process into a single step. The projections are formed as part of the mold structure used for printing, allowing both the pattern layer and the projections to be created simultaneously. This merging eliminates the need for separate projection processing steps, resolving the manufacturing complexity issue while maintaining slip prevention functionality.
3Adaptability or versatility
If offset printing is used to form patterns on the cooking vessel, then printing can be performed on curved portions, but the manufacturing cost is increased
Solution Approach 1:
The patent uses a mold that directly copies the desired pattern and projection structure onto the cooking vessel during the forming process. This mold-based copying approach eliminates the need for expensive offset printing while still achieving high-quality pattern formation on curved surfaces. The pattern is transferred through the mold structure itself rather than through a separate printing process.
4Productivity
If the cooking vessel bottom surface is made flat, then manufacturing is simpler, but heat transfer area is reduced and slipping may occur
Solution Approach 1:
The patent merges the heat transfer enhancement function with the slip prevention function by forming projections on the bottom surface that serve both purposes. The same projections that increase heat transfer area also prevent slipping, eliminating the need for separate structural features for each function and avoiding excessive complexity.
Solution Approach 2:
The patent applies the concavo-convex structure locally to the bottom surface where heat transfer and slip prevention are needed, while keeping other surfaces relatively simple. This localized application of complexity ensures that the surface structure provides the necessary functionality without making the entire vessel overly complex.
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 concavo-convex design and ceramic coating improve cooking efficiency by increasing heat transfer, prevent accidents from slipping, and ensure easy cleaning without food sticking or peeling, while being safer for human use and reducing manufacturing costs.
Implementation Method 1
can achieve quick cooking through an enlarged heat transfer area and prominent heat absorption
Implementation Method 2
the inner surface of the cooking vessel is coated with a ceramic coating agent to show non-stick function
Implementation Method 3
concentric projections are formed on a bottom surface of the cooking vessel that comes in direct contact with fire to prevent slipping
Data Source
AI summary
A cooking vessel having a concavo-convex coating layer formed thereon is provided, in which concavo-convex portions are formed on an outer surface of the cooking vessel and a coating layer is formed on an upper and inner portion of the concavo-convex portions, so that quick cooking can be achieved through an enlarged heat transfer area and prominent heat absorption through the coating layer, scratching or slipping can be prevented from occurring, and cleaning of the cooking vessel can be easily performed through a non-stick function. The cooking vessel includes a vessel portion configured to accommodate a food material to be cooked therein, a first concavo-convex portion formed on an outer surface of the vessel portion and including first projections formed in a solid line and second projections formed in a dotted line, and a coating layer formed on an upper portion and an inner portion of the first concavo-convex portion.