Microwave Radiator Slot Layout for Uniform Oven Heating
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Solution Overview
Problem
Conventional microwave cooking apparatuses suffer from uneven heating due to irregular microwave radiation patterns, limiting their ability to optimize performance based on cooking load and mode, requiring adjustments for changes in cooking chamber size and shape.
Innovation Solution
A microwave cooking apparatus with a microwave supplier and radiator system, where the radiator includes slots that are at least one-fourth the wavelength of microwaves in width, positioned to re-radiate microwaves uniformly, and can be adjusted or changed based on cooking mode and load, using a stirrer to ensure even distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If microwaves are radiated from a deflected place in the cooking chamber, then the cooking apparatus can be organized with a compact structure, but the microwave field is formed unevenly causing uneven heating
Solution Approach 1:
A microwave radiator (intermediary component) is introduced between the microwave source and the cooking chamber to redistribute and uniformize the microwave field. The radiator receives microwaves from the deflected source and re-radiates them uniformly throughout the chamber, solving the uneven heating problem while maintaining the compact deflected source configuration.
2Temperature
If a stirrer or rotatable antenna is installed to rotate at the microwave radiation location, then uniform heating performance is improved, but the device complexity increases
Solution Approach 1:
The complex rotating stirrer mechanism is extracted and replaced with a stationary microwave radiator that achieves uniform heating through its slot geometry and position. The radiator is fixed in place near the deflected microwave source, eliminating the need for mechanical rotation while maintaining heating uniformity.
3Ease of operation
If the microwave radiation is steadily directed to a middle point to satisfy both light and heavy load, then the system can operate with simple control, but the microwave field cannot be optimized for different cooking loads and modes
Solution Approach 1:
The microwave radiator is designed with specific slot dimensions (at least one-fourth the microwave wavelength) and positioning to create localized optimal radiation patterns. This allows the system to adapt to different cooking loads and modes by optimizing the microwave field distribution in specific regions of the cooking chamber, rather than using a single middle-point radiation approach.
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 configuration enhances uniform heating performance and optimizes cooking efficiency by allowing for tailored microwave field adjustments according to the cooking load and mode, improving both heating uniformity and cooking quality.
Implementation Method 1
a microwave radiator (or radiator) re-radiating the microwave and provided in the cooking chamber
Implementation Method 2
cooking apparatus utilizing microwaves which are irradiated to a non-conducting substance such as foods (hereinafter, referred to as 'contents' or a 'cooking object') thereby cooking an inside of the contents evenly in a short time due to the molecular vibrations in the contents
Data Source
AI summary
A cooking apparatus which uses microwaves is provided having a microwave supplier which supplies microwaves into the cooking chamber. More particularly, the microwave supplier may be provided proximate an upper side of the cooking chamber; and a microwave radiator may be provided inside of the cooking chamber to re-radiate the microwaves.