Microwave System Polarization Re-radiation for Energy Absorption
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Solution Overview
Problem
Conventional microwave ovens inefficiently absorb energy due to the reflection of microwave energy, leading to reduced cooking efficiency as most of the reflected energy is not utilized.
Innovation Solution
A microwave system that includes a chamber and a microwave process circuit with polarized source and reflected microwaves, utilizing circulators and polarizers to convert and re-radiate reflected microwaves of different polarizations back into the chamber, enhancing energy absorption by the device under test.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional microwave ovens transmit source microwave energy into the chamber, then the device under test is heated, but most of the reflected microwave energy is not utilized leading to reduced cooking efficiency
Solution Approach 1:
The patent converts the harmful reflected microwave energy into useful heating energy by capturing it with circulators and polarizers, then re-radiating it into the chamber. The reflected microwaves that would normally be wasted are instead redirected through polarization conversion and re-radiated at different polarization angles, transforming energy loss into additional heating benefit.
Solution Approach 2:
The patent changes the polarization parameter of the reflected microwaves using polarizers. By converting the polarization state (e.g., from vertical to horizontal or at different angles), the system enables the reflected energy to be re-radiated in a different orientation that can be more effectively absorbed by the device under test, thereby utilizing energy that would otherwise be lost.
2Productivity
If a single polarization microwave system is used, then the system structure is simple, but energy absorption efficiency is reduced due to unutilized reflected energy
Solution Approach 1:
The patent makes the microwave system multi-functional by adding components that serve dual purposes: circulators that both isolate the power generator from reflected energy and redirect it for reuse, and polarizers that both analyze and convert polarization states. These components enable the system to handle multiple polarization states and reuse reflected energy, increasing energy absorption efficiency without proportionally increasing complexity.
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 approach increases the absorption efficiency of the device under test by utilizing orthogonal polarizations and detecting reflected microwaves, thereby optimizing energy transfer and reducing waste, resulting in improved cooking performance.
Implementation Method 1
The first energy feeder is configured to polarized the source microwave to the polarized source microwave
Implementation Method 2
The first circulator has a first port configured to receive the source microwave, a second port coupled to the first energy feeder, and a third port
Implementation Method 3
a microwave system is used to generate and to transmit microwave energy to oscillate electric resonator and radiator, and further transmit the microwave into a chamber with a device under test (DUT), which may be food, liquid or other materials, so as to heat the device under test
Implementation Method 4
A part of energy absorbed by the DUT, another part of energy reflected to the microwave oven
Data Source
AI summary
The present disclosure provides a microwave system, including a chamber and a microwave process circuit. The microwave process circuit is coupled to the chamber, and configured to radiate a polarized source microwave, receive a first reflected microwave, and radiate a polarized first reflected microwave into the chamber so as to heat a device under test in the chamber. The microwave process circuit includes a power generator, a first energy feeder, and a second energy feeder. The power generator is configured to generate a source microwave according to a reference signal and a control signal. The first energy feeder is configured to polarized the source microwave to the polarized source microwave, and radiate the polarized microwave into the chamber. The second energy feeder is configured to polarized the first reflected microwave to the polarized first reflected microwave, and radiate the polarized first reflected microwave into the chamber.