Vacuum Double-Wall Cookware Base for Low-Loss Heat Control
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Solution Overview
Problem
Conventional cookware manufacturing methods require high energy consumption to achieve a secure connection for the sandwich base, leading to inefficient heat transfer and thermal insulation, and lack advanced temperature regulation capabilities.
Innovation Solution
The cookware employs a vacuum-sealed double wall construction where the inner and outer hulls are connected only at the pouring edges, using a vacuum to hold the components together, allowing for efficient heat transfer and insulation, and incorporates miniaturized electronics for temperature-controlled regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soldering or beating methods are used to connect the sandwich base components, then a secure material connection is achieved, but high energy consumption and high temperatures are required
Solution Approach 1:
The patent replaces the conventional mechanical/thermal joining methods (soldering, beating) with a vacuum-based holding system. The vacuum chamber creates negative pressure that holds the base components (aluminum disc, capsule, heat distribution plate) together without requiring high temperatures or excessive energy, thus resolving the contradiction between connection security and energy consumption.
Solution Approach 2:
The patent introduces a vacuum environment (inert atmosphere without air molecules) within the cookware base structure. This vacuum chamber serves as the connecting medium, eliminating the need for soldering materials or high-temperature processing, thereby reducing energy consumption while maintaining structural integrity.
2Strength
If conventional sandwich base construction is used, then structural integrity is maintained, but thermal insulation efficiency is insufficient
Solution Approach 1:
The vacuum chamber creates an inert environment free of air molecules, which are poor thermal insulators. By removing air from the base structure, the patent eliminates convective and conductive heat transfer pathways, dramatically reducing heat loss while preserving structural integrity through the vacuum's holding force.
Solution Approach 2:
The patent utilizes vacuum pressure (pneumatic principle) to maintain both structural integrity and thermal insulation. The negative pressure holds components together structurally while simultaneously creating thermal insulation by preventing gas molecule-mediated heat transfer, thus resolving the contradiction between strength and energy loss.
3Reliability
If high temperatures are applied during base connection, then secure connection is achieved, but thermal efficiency during cooking is reduced
Solution Approach 1:
The patent replaces thermal joining processes with a mechanical vacuum-holding system. This substitution allows the base components to be securely connected without undergoing high-temperature processing, preserving their thermal properties and enabling efficient heat transfer during cooking without the energy waste associated with high-temperature connection methods.
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 design reduces energy consumption, enhances thermal efficiency, and enables precise temperature control, resulting in faster cooking times and reduced heat loss, making the cookware more energy-efficient and universally compatible with various heat sources.
Implementation Method 1
there is a vacuum in the entire space 3 between the two hulls
Implementation Method 2
a heat distribution plate 6 made of a material that conducts heat well, e.g. aluminum
Implementation Method 3
the double wall causes extremely efficient thermal insulation, i.e. the heat dissipation of the cookware into the ambient air is minimized
Data Source
Figure 1~2
Figure 3
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AI summary
The invention relates to a double-walled cooking utensil, comprising an inner body and an outer body, which are arranged at a distance inside one another, as well as a flat base region and a wall region. A bottom plate is arranged in the base region between the two bodies. The two bodies are connected to one another in a vacuum-tight manner and a vacuum exists between them. In a preferred embodiment, the base region of the outer body has a recess, into which an additional bottom plate is inserted in a vacuum-tight manner. The production takes place in a vacuum chamber or a vacuum is subsequently generated.