Microwave Heating Arrangement Bottom Wall Wave Guide Adapter
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Solution Overview
Problem
Conventional microwave heating systems lack the ability to effectively couple microwave radiation into a sample while allowing for convenient monitoring of the sample's state or properties and the ability to act on the sample, such as stirring, during heating.
Innovation Solution
A microwave heating arrangement featuring a container with a wave guide adapter that couples microwaves into the container via the bottom wall, oriented parallel to the electric field direction, and includes a recess for monitoring and actuating equipment, such as a rotating magnet for stirring, and a temperature sensor for temperature measurement, without the need for an additional antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional microwave heating system uses a standard wave guide configuration, then the microwave coupling is straightforward, but the ability to monitor and manipulate the sample during heating is limited
Solution Approach 1:
The patent introduces a vertical dimension by passing the wave guide through the bottom container wall, creating a new spatial arrangement that allows monitoring and manipulation equipment to be positioned below the container while maintaining microwave coupling capability. This dimensional change enables sample monitoring and manipulation without interfering with the horizontal microwave path.
Solution Approach 2:
The wave guide adapter serves as an intermediary component that couples microwaves from the wave guide into the container through the bottom wall. This adapter enables the transmission of microwave energy while simultaneously providing structural support for mounting monitoring and manipulation equipment, thus mediating between the microwave source and the sample.
2Ease of operation
If an antenna is added to the container for sample manipulation, then stirring capability is improved, but the device complexity and number of components increases
Solution Approach 1:
The patent merges the wave guide structure with the stirring mechanism by integrating the wave guide adapter with the mounting structure for the stirring magnet. The wave guide adapter simultaneously serves as the microwave coupling component and the structural support for sample manipulation, combining multiple functions into a single integrated component.
Solution Approach 2:
The wave guide adapter is designed with multi-functionality, serving both as the microwave energy transmission component and as the structural platform for mounting monitoring sensors and manipulation devices. This universal component performs multiple functions without requiring separate dedicated structures for each function.
3Strength
If the bottom container wall is made thick for structural strength, then container durability is improved, but microwave coupling efficiency through the wall decreases
Solution Approach 1:
The wave guide adapter acts as an intermediary that bridges the thick bottom container wall, providing a dedicated microwave transmission path through the wall thickness. This adapter maintains structural integrity while ensuring efficient microwave energy transfer, overcoming the attenuation that would occur through direct wall penetration.
Solution Approach 2:
The wave guide adapter creates a localized region of optimized microwave transmission properties at the bottom wall interface. By concentrating the microwave coupling function in this specific location with appropriate material properties and geometric design, efficient energy transfer is achieved despite the overall thickness of the container wall.
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 arrangement enables efficient and effective microwave coupling into the container, allowing for the monitoring and manipulation of the sample during heating, enhancing flexibility and safety by enabling temperature measurement and stirring without additional provisions.
Implementation Method 1
a wave guide adapter (143) being adapted to couple the microwave from the wave guide (106) into the inner space (108) of the container (140) via the bottom container wall (103)
Implementation Method 2
the bottom container wall (103) being oriented to be different from perpendicular to, in particular substantially parallel to, the electric field vector direction (145)
Implementation Method 3
a magnet (112) which, upon rotation, is able to generate a magnetic force for stirring a liquid sample (102) in the container (118)
Implementation Method 4
a temperature sensor (113) arranged outside the inner space (108) of the container (140) in an inside protrusion (151) of the bottom container wall (103)
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
It is provided an arrangement (100) for heating a sample (102) by microwave radiation, the arrangement comprising: a container (140) having an inner space (108) for accomodating the sample (102) and having a bottom container wall (103); a wave guide (106) arranged to guide a microwave having an electric field direction (145); a waveguide adapter (143) being adapted to couple the microwave from the wave guide (106) into the inner space (108) of the container (140) via the bottom container wall (103) being oriented to be different from perpendicular to, in particular substantially parallel to, the electric field vector direction (145).