Solid-State RF Heating Line to Reduce Hot Spots and Energy Loss
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Solution Overview
Problem
Conventional microwave ovens using magnetrons for industrial applications face issues with uncontrollable heat development, undesirable hot spots, and inefficiencies due to long operating times, which can lead to uneven energy distribution and potential damage to substances being treated.
Innovation Solution
A processing apparatus and method utilizing solid-state radio frequency (RF) sources with advanced control systems to individually control parameters such as power level, frequency, phase, and direction of electromagnetic fields, ensuring even energy distribution and precise temperature management, combined with a further heat treatment apparatus for additional cooking steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If magnetron is used to generate microwave energy in industrial applications, then microwave heating can be achieved, but uncontrollable heat development and hot spots occur leading to uneven energy distribution
Solution Approach 1:
The patent divides the single magnetron source into multiple solid-state RF sources (at least two) that can be independently controlled. Each source is positioned to target specific zones within the substance, enabling localized temperature control and eliminating hot spots through distributed energy application.
Solution Approach 2:
The patent implements zone-specific heating by assigning different solid-state RF sources to different spatial zones within the treatment chamber. Each zone can be heated independently with customized power levels, frequencies, and phases, allowing precise local temperature management while maintaining overall uniformity.
2Power
If magnetron is used for microwave generation, then industrial-scale heating is possible, but long operating times result in undesirable heat development
Solution Approach 1:
The patent employs multiple solid-state RF sources that can operate simultaneously and continuously without the thermal limitations of magnetrons. The solid-state technology enables sustained high-power operation with better thermal management, maintaining consistent heating performance over extended industrial-scale operating periods.
3Temperature
If conventional microwave radiation is applied, then substance heating is achieved, but undesired hot spots occur causing potential damage
Solution Approach 1:
The patent incorporates sensors that continuously monitor temperature and energy absorption in real-time. This feedback information is used to dynamically adjust the power output, frequency, and phase of individual solid-state RF sources, preventing hot spot formation by responding to actual conditions rather than relying on fixed parameters.
Solution Approach 2:
The patent uses dynamically adjustable solid-state RF sources that can modify their operating parameters (power, frequency, phase) in real-time based on substance properties, position, and absorption characteristics. This dynamic control prevents static hot spot formation that occurs with conventional fixed-parameter microwave systems.
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 solution provides efficient, controlled, and uniform heating or cooking of substances, reducing energy loss and preventing damage, while increasing yield and quality by minimizing uneven energy distribution and hot spots.
Implementation Method 1
a line for cooking a substance with a multitude of solid-state radio frequency sources
Implementation Method 2
controlling the electromagnetic fields by controlling the power level, frequency and phase versus time
Data Source
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AI summary
The present invention relates to a line for heating, drying, disinfecting, pasteurizing and/or sterilizing a substance with an apparatus comprising at least one, preferably a multitude, solid-state radio frequency source(s) and a further heat treatment apparatus. The present invention further relates to a method for heating, drying, disinfecting, pasteurizing and/or sterilizing a substance with an apparatus comprising at least a solid-state RF energy source microwave heating step and a further heat treatment step.