Universal AC/DC Converter for Microwave Heating Devices
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Solution Overview
Problem
Existing microwave heating devices require component selection based on specific commercial power supply specifications, limiting global manufacturing efficiency and necessitating separate designs for different voltage standards.
Innovation Solution
A microwave heating device utilizing an AC/DC converter to output DC voltages, allowing a compound semiconductor microwave processing device to operate independently of commercial power supply voltages, with a controller managing power distribution to loads and contacts, enabling universal component usage across various voltage specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are selected based on specific commercial power supply specifications, then the device operates reliably for that specific voltage, but the design complexity and manufacturing cost increase due to needing separate designs for different countries
Solution Approach 1:
The patent implements universality by designing the microwave heating device to accept multiple commercial power supply voltages (100V, 120V, 200V, 240V AC) through a single unified design. The AC/DC converter automatically adapts to different input voltages and outputs a standardized DC voltage, eliminating the need for country-specific design variations while maintaining operational reliability across all voltage standards
2Reliability
If separate designs are created for different commercial power supply specifications, then each design is optimized for its specific voltage, but the manufacturing efficiency and productivity decrease
Solution Approach 1:
The invention enables global manufacturing by creating a universal microwave heating device that can be produced in a single design configuration for worldwide distribution. The AC/DC converter's ability to automatically adapt to different input voltages allows the same device to be manufactured and sold in countries with different power supply standards, dramatically improving manufacturing efficiency and productivity
3Ease of manufacture
If the device uses a fixed voltage design, then the component selection is simplified, but the adaptability to different commercial power supply specifications is reduced
Solution Approach 1:
The patent applies parameter changes by designing the AC/DC converter to dynamically adjust its operating parameters based on the detected input voltage. The converter modifies its transformation ratio and output characteristics to maintain a constant DC output voltage regardless of whether the input is 100V, 120V, 200V, or 240V AC, thereby achieving both ease of manufacture and power supply adaptability
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 configuration enables the use of universal components worldwide, improving design efficiency and allowing a single design to meet power supply specifications of multiple countries, resulting in a highly reliable and adaptable microwave heating device.
Implementation Method 1
an AC/DC converter which outputs a plurality of DC voltages according to power supplied from the commercial power supply
Implementation Method 2
a microwave processing device using a compound semiconductor which receives a plurality of outputs of the AC/DC converter and outputs a microwave
Implementation Method 3
heat food by dielectric heating by the microwave
Data Source
AI summary
A microwave heating device mountable to an electric device, includes: a commercial power supply; an AC/DC converter which outputs a plurality of DC voltages according to power supplied from the commercial power supply; a controller which receives power from the AC/DC converter and totally controls the electric device; a microwave processing device using a compound semiconductor which receives a plurality of outputs of the AC/DC converter and outputs a microwave; and a plurality of loads connected between, of the DC voltages output from the AC/DC converter, a predetermined Vd voltage and ground through a plurality of contacts. The loads form a group of electric components in the electric device. The controller controls power supply to the loads, and controls on/off of the contacts to drive the loads by the Vd voltage regardless of the voltage of the commercial power supply.