Plasma Dielectric Microwave Control for Uniform Chamber Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microwave heating devices face challenges in achieving uniform heating due to uneven energy distribution, with issues such as energy loss and difficulty in controlling microwave reflection, leading to inefficient heating processes.
Innovation Solution
A microwave heating device with hollow dielectric members that can be controlled to switch between plasma, absorption, and transmission states, using electrodes and a processing circuit to adjust the current applied, allowing for precise management of microwave energy distribution within the heating chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If neon tubes are used to generate plasma for reflecting microwave, then heating energy equalization is improved, but microwave reflection direction control becomes difficult
Solution Approach 1:
The patent changes the physical state parameter of the gas in hollow dielectric members between plasma state and non-plasma state to control microwave reflection. By applying voltage to electrodes, the gas transitions to plasma state with high reflectivity, allowing controllable microwave direction control while maintaining heating energy equalization.
Solution Approach 2:
The patent makes the microwave reflection property dynamic by enabling switching between plasma and non-plasma states through electrode voltage control. This dynamic state change allows the system to adaptively control microwave reflection direction and timing, resolving the contradiction between equalization and controllability.
2Manufacturing precision
If plasma is generated in neon tubes to reflect microwave, then heating energy distribution is improved, but energy loss in heating chamber increases
Solution Approach 1:
The patent applies plasma generation locally only in specific hollow dielectric members where microwave reflection is needed, rather than throughout the entire heating chamber. This localized approach maintains heating energy distribution control while minimizing unnecessary energy loss in regions where plasma is not generated.
Solution Approach 2:
The system uses the microwave energy itself to generate plasma in the hollow dielectric members, which then reflects the microwave back to enhance heating. The plasma acts as a self-regulating reflector that automatically responds to the presence of microwave energy, improving distribution efficiency while controlling energy loss.
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 solution enables effective equalization of heating energy, reducing uneven heating and improving the efficiency of the microwave heating process by controlling the distribution of microwave energy within the chamber.
Implementation Method 1
a plasma state in which the microwave is reflected by the gas
Implementation Method 2
at least one hollow dielectric member in which a gas is sealed, the hollow dielectric member having electrodes at both end portions thereof
Implementation Method 3
a plasma state in which the microwave is absorbed by the gas
Implementation Method 4
at least one hollow dielectric member in which a gas is sealed, the hollow dielectric member having electrodes at both end portions thereof
Implementation Method 5
a gas state in which the microwave is allowed to be transmitted through the gas
Data Source
AI summary
A radiation element for radiating a microwave into the heating chamber at least one hollow dielectric member in which a gas is sealed, the hollow dielectric member having electrodes and a control unit having a plasma control unit for controlling the state of the hollow dielectric member and a current adjustment unit for adjusting a current to be applied to the electrodes of the hollow dielectric member under the control of the plasma control unit, the current adjustment unit being connected to the electrodes; and wherein the plasma control unit controls the state of the hollow dielectric member to put into one of states of: a plasma state in which the microwave is reflected by the gas; a plasma state in which the microwave is absorbed by the gas; and a gas state in which the microwave is allowed to be transmitted through the gas.