Optically Transmissive Cookware for Direct Narrowband Radiant Heating
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Solution Overview
Problem
Traditional cooking methods using opaque materials for cooking vessels and packaging hinder direct irradiation of food, leading to inefficient heat transfer and energy wastage, as radiant energy is absorbed or reflected by these materials rather than being directly absorbed by the food.
Innovation Solution
Development of cooking vessels and cook-packs made from optically transmissive materials like plastics and glass, specifically designed to allow direct irradiation of food at visible or infrared narrow wavelength bands, with features such as mesh structures, anti-reflective coatings, and coded parameters for optimal cooking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional opaque materials (metals or ceramics) are used for cooking vessels, then the vessels have high strength and heat resistance, but the radiant energy is blocked from directly heating the food, causing inefficient heat transfer and energy wastage
Solution Approach 1:
The cooking vessel is divided into multiple components: a support structure (metal frame) that provides strength and positioning, and transmissive panels (glass or plastic) that allow radiant energy penetration. This segmentation enables each component to fulfill its specific function - the metal frame provides structural integrity while the transmissive panels enable direct heating of food
Solution Approach 2:
The cooking vessel uses composite construction combining metal (for strength and support) with optically transmissive materials like glass or plastic (for radiant energy transmission). This composite approach allows the vessel to simultaneously achieve high strength and high transmissivity, resolving the contradiction between these two properties
2Productivity
If optically transmissive materials are used for cooking vessels, then direct irradiation of food is enabled improving heating efficiency, but the vessels may have reduced structural strength and durability
Solution Approach 1:
The vessel structure separates the structural support function (handled by metal frame) from the radiant energy transmission function (handled by glass/plastic panels), allowing the transmissive materials to be optimized for cooking speed without compromising overall vessel strength
Solution Approach 2:
The metal support structure acts as an intermediary that bears the mechanical loads and stresses, while the transmissive panels focus on optimizing heat transfer. This intermediary support system enables the use of lightweight transmissive materials without sacrificing vessel durability
3Temperature
If radiant energy is directed at opaque cooking vessels, then the vessel surface is heated, but secondary thermal transfer is required to heat the food, reducing heating efficiency
Solution Approach 1:
The opaque vessel surface that causes energy loss is replaced with optically transmissive material, extracting the heating function directly from the vessel and applying it to the food. This eliminates the intermediate heating step where energy is wasted heating the vessel rather than the food directly
4Temperature
If heat is conducted from outer layer to inner layers of food, then the outer surface reaches much higher temperature than inner areas, but this slows down the cooking process
Solution Approach 1:
The patent replaces thermal conduction (mechanical heat transfer through material) with direct radiant heating (electromagnetic energy absorption). By using transmissive vessels that allow radiant energy to penetrate and heat food from multiple angles, the system bypasses the slow conductive heat transfer through food layers, achieving faster and more uniform heating
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
Facilitates direct and efficient heating of food by allowing radiant energy to penetrate and be absorbed by the food, reducing energy wastage and improving cooking speed and uniformity.
Implementation Method 1
the vessel is comprised of a material that is optically transmissive at the visible or infrared narrow wavelength bands of irradiation emitted by the arrays
Implementation Method 2
heating or cooking the comestible with irradiation emitted by the arrays
Data Source
Figure 1(a)~1(b)
Figure 1(c)
Figure 2
AI summary
A methodology and product or system configurations are provided which allow food to be directly irradiated for cooking applications which involve the impingement of direct radiant energy on food or comestible items. Cooking vessels or cook-packs are used that are optically transmissive in visible or infrared narrow wavelength bands emitted in suitable narrowband cooking or heating systems.