Microwaveable Vessel With Heat-Generating Glaze for Even Heating
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Solution Overview
Problem
Microwave cooking often results in uneven heating, long cooking times, and loss of food taste due to the oscillation-based heating method, and there is a need for a microwaveable vessel that can quickly and evenly heat food while maintaining heat for an extended period without the risks associated with metal objects.
Innovation Solution
A microwaveable vessel with a metallic body coated with a heat-generating glaze and a heat-resistant outer layer, featuring a multi-layered structure with a heat-conduction medium, allowing for even heating and extended heat retention, and capable of being used with various cooking methods including microwave, stovetop, and induction cooking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If microwave oscillation heating is used, then heating speed is improved, but heating uniformity deteriorates
Solution Approach 1:
The vessel is divided into multiple functional layers: microwave-absorbing layer, heat-conducting layer, and heat-insulating layer. This segmentation allows each layer to perform its specific function optimally, with the microwave-absorbing layer converting microwave energy to heat, the heat-conducting layer distributing heat uniformly, and the heat-insulating layer retaining heat, thereby resolving the contradiction between fast heating and uniform heating
Solution Approach 2:
The vessel uses composite material structure combining different materials with complementary properties: microwave-absorbing materials (ferrite, carbon), heat-conducting materials (metallic layers, aluminum oxide), and heat-insulating materials (aerogel, vacuum). This composite structure enables simultaneous achievement of rapid microwave heating and uniform heat distribution
2Manufacturing precision
If microwave cooking time is extended to achieve even heating, then heating uniformity is improved, but time consumption increases
Solution Approach 1:
The heat-conducting layer is pre-designed with high thermal conductivity materials to rapidly distribute heat throughout the vessel contents immediately after microwave heating begins. This preliminary heat distribution action eliminates the need for extended cooking times to achieve uniform heating, reducing overall cooking time while maintaining heating uniformity
3Duration of action of stationary object
If metal containers are placed in microwave oven, then heat retention is improved, but safety deteriorates due to sparking
Solution Approach 1:
A microwave-absorbing intermediate layer is introduced between the microwave field and the metallic heat-retention structure. This intermediary layer absorbs microwave energy and converts it to heat, preventing direct interaction between microwaves and metal that would cause sparking, while still allowing the metal structure to provide excellent heat retention
Solution Approach 2:
The potential harmful effect of microwave-metal interaction is converted into a beneficial function by using the metallic structure's high reflectivity to create a microwave cavity effect that enhances microwave absorption by the designated absorbing layers, while the metal's high thermal conductivity simultaneously provides superior heat retention
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 vessel achieves rapid and uniform heating of food, maintains high temperatures for an extended period, and prevents the loss of food taste, while being safe to use and compatible with multiple cooking appliances.
Implementation Method 1
The microwave oven heats food by bombarding it with electromagnetic radiation in the microwave spectrum causing polarized molecules in the food's water content to oscillate back and forth, and thereby generate thermal energy. This microwave cooking process is also known as dielectric heating.
Implementation Method 2
The heat-generating glaze of some embodiments absorbs electromagnetic waves from the microwave oven's magnetron and converts them into thermal energy through oscillation.
Implementation Method 3
The thermal energy is then transferred to the metallic body, which causes the contents of the vessel to be evenly heated from all sides of the vessel, including its side wall(s) and bottom side.
Implementation Method 4
The heat-resistant outer layer may insulate the vessel by trapping heat.
Data Source
AI summary
Some embodiments provide a microwaveable vessel that can quickly and evenly heat or cook different types of food. In some embodiments, the vessel includes a metallic body adapted to hold food or drinks. The outer portion of the body is coated with a layer of heat-generating glaze. In some embodiments, the vessel also includes a heat-resistant outer cover that covers the heat-generation layer. The vessel of some embodiments has a multi-layered structure with inner and outer shells that are joined together to form a cavity between the shells.