RF Heating System Liquid Waveguide Transmission
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Solution Overview
Problem
The use of radio frequency (RF) energy to heat articles faces challenges due to the wavelength of RF energy, making it difficult to transmit and launch efficiently.
Innovation Solution
A radio frequency (RF) heating system that includes an RF generator, an RF waveguide filled with a liquid, an RF heating chamber filled with the same liquid, and a convey system to transport articles through the heating chamber, allowing for efficient transmission and heating of articles using RF energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RF energy is used to heat articles, then heating effectiveness is improved, but transmission and launching efficiency deteriorates due to wavelength issues
Solution Approach 1:
The patent introduces a liquid medium as an intermediary substance filling the waveguide and heating chamber. This liquid acts as a mediator that couples the RF energy from the waveguide to the articles being heated, enabling efficient energy transfer while overcoming the wavelength transmission problems. The liquid medium absorbs and redistributes the RF energy uniformly, solving both the heating effectiveness and transmission efficiency issues simultaneously.
2Device complexity
If RF energy is transmitted through air, then system complexity is reduced, but heating uniformity deteriorates due to wavelength distribution issues
Solution Approach 1:
The patent changes the physical parameter of the transmission medium from gas (air) to liquid. This parameter change fundamentally alters the RF energy distribution characteristics. The liquid medium provides superior dielectric properties that enable uniform RF field distribution throughout the heating chamber, achieving consistent heating across all articles regardless of their position, while maintaining relatively simple system architecture.
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 RF heating system effectively and efficiently heats a plurality of articles, enabling pasteurization or sterilization by rapidly and uniformly distributing RF energy, thus overcoming the inefficiencies associated with traditional RF heating methods.
Implementation Method 1
Radio frequency (RF) energy has been used to heat articles by, for example, induction heating or dielectric heating
Implementation Method 2
The ability of electromagnetic radiation to penetrate and heat an object in a rapid and effective manner
Data Source
AI summary
A radio frequency (RF) heating system and process for rapidly and uniformly heating a plurality of articles on a convey line.