Microwave Heating Cradle with Susceptor for Even Food Browning
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Solution Overview
Problem
Microwave ovens tend to cook food items unevenly and fail to achieve a browned, crisp surface, particularly for items with rounded or irregular shapes, necessitating a microwavable package that can effectively heat, brown, and crisp a variety of food items.
Innovation Solution
A U-shaped microwave heating construct with a cradle and movable lid, incorporating microwave energy interactive material, such as a susceptor, to enhance heating and crisping, while allowing for even energy distribution and surface browning of food items, including those with curved shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional microwave ovens are used to heat food items, then heating convenience is provided, but uneven cooking and inability to achieve browned crisp surface occurs
Solution Approach 1:
The patent introduces a susceptor as an intermediary material that mediates between microwave energy and food. The susceptor absorbs microwave energy and converts it to heat, which is then transferred to the food, enabling even heating and surface browning without requiring direct microwave exposure to the food surfaces
Solution Approach 2:
The heating construct serves multiple functions: it supports the food item, provides a reflective surface for microwave energy, transfers heat to the food, and enables surface browning and crisping. This multi-functionality resolves the contradiction by maintaining convenience while achieving uniform cooking results
2Use of energy by moving object
If microwave energy interactive material is positioned closer to food surfaces, then heating efficiency and browning are improved, but heat loss reduction must be managed
Solution Approach 1:
The susceptor is positioned selectively at specific locations where heat transfer to the food is most effective, such as at the food-supporting surfaces and edges. This localized positioning optimizes heating efficiency at critical areas while minimizing unnecessary energy interaction in other regions, thereby managing heat loss
3Manufacturing precision
If a construct with microwave energy interactive material is used, then browning and crisping are achieved, but device complexity increases
Solution Approach 1:
The patent changes the physical and chemical parameters of the heating system by introducing materials with specific microwave interaction properties (susceptors with appropriate thickness, conductivity, and heat transfer characteristics). These parameter changes enable browning and crisping functions without requiring complex mechanical or electronic systems
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 construct ensures uniform heating and browning of food items by positioning microwave energy interactive material closer to the food's surfaces, reducing heat loss, and allowing for venting to enhance crisping, thus addressing the uneven cooking issues in traditional microwave ovens.
Implementation Method 1
microwave energy interactive material to alter the effect of microwave energy on the food item
Implementation Method 2
positioning microwave energy interactive material closer to the food's surfaces, reducing heat loss
Data Source
Figure 1A~1D
Figure 1E~1I
Figure 1J~1K
AI summary
A microwave heating construct includes a first side wall and a second side wall opposite one another and a food-supporting panel extending between the first side wall and the second side wall. The first side wall includes a movable portion for being positioned over the food-supporting panel. The food-supporting panel and/or the movable portion of the first side wall may include microwave energy interactive material.