Pivoting Waveguide Layout for Cavity Field Distribution Tuning
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Solution Overview
Problem
Existing microwave irradiation systems face challenges in optimizing electromagnetic field distribution due to factors that cannot be replicated in simulations, leading to suboptimal microwave irradiation and increased process complexity.
Innovation Solution
A waveguide apparatus with a first waveguide fixed to the cavity wall and a pivotable second waveguide that allows adjustable microwave output direction, enabling easy adjustment of electromagnetic field distribution within the cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cavity is designed based on electromagnetic field analysis simulations, then the microwave irradiation can be optimized according to simulation results, but optimal microwave irradiation cannot always be realized because the electromagnetic field distribution inside the reaction unit changes due to factors that cannot be reproduced in simulations
Solution Approach 1:
The patent makes the waveguide movable relative to the cavity wall, allowing dynamic adjustment of the waveguide's position and angle. This enables the system to adapt to changes in electromagnetic field distribution caused by droplets, liquid level changes, or internal structure modifications, thereby maintaining optimal microwave irradiation despite variations that cannot be predicted by static simulations
2Manufacturing precision
If structures are added to adjust the electromagnetic field distribution inside the cavity, then optimal microwave irradiation can be realized, but the number of processes increases due to operations such as opening the reaction unit
Solution Approach 1:
Instead of adding complex adjustment structures inside the cavity, the patent employs a movable waveguide that can be repositioned and reoriented from the outside. This simplifies the overall system by eliminating the need for internal electromagnetic field adjustment structures and reduces operational complexity by allowing adjustments without opening the reaction unit
Solution Approach 2:
The waveguide is designed as a separate, movable component that can be independently adjusted relative to the cavity. This segmentation allows the waveguide to be positioned and oriented optimally without affecting the cavity structure, thereby simplifying the adjustment process and reducing the number of operational steps required
3Device complexity
If the waveguide is fixed to the cavity wall, then the structure is simple and stable, but the electromagnetic field distribution cannot be easily adjusted
Solution Approach 1:
The waveguide is designed with movable connections to the cavity wall, allowing it to be repositioned and reoriented. This dynamic configuration enables the waveguide to adapt to different electromagnetic field distribution requirements while maintaining a relatively simple structural design, thus achieving both structural simplicity and adjustability
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 easy adjustment of electromagnetic field distribution within the cavity, allowing optimal microwave irradiation without requiring additional structural modifications or changes to the microwave generator's position.
Implementation Method 1
a first waveguide (10) for microwaves that is fixed to a wall of a cavity (3) so as to be at least partially located outside the wall, and a second waveguide (20) through which microwaves from the first waveguide (10) are guided to be output into the cavity (3)
Data Source
AI summary
Provided is a waveguide apparatus that can adjust the electromagnetic field distribution inside a cavity in which a target is subjected to microwave irradiation. A waveguide apparatus includes: a first waveguide for microwaves that is fixed to a wall of a cavity so as to be at least partially located outside the wall, a target inside the cavity being subjected to microwave irradiation; and a second waveguide through which microwaves from the first waveguide are guided into the cavity, wherein the second waveguide is connected to the first waveguide such that an output direction of microwaves into the cavity is changeable.