Multifunctional radio frequency systems and methods for UV sterilization, air purification, and defrost operations
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Solution Overview
Problem
Conventional appliances that incorporate additional functions, such as refrigerators with defrosting, air purification, and anti-microbial capabilities, become larger and more expensive due to the need for separate equipment, which increases space and cost requirements.
Innovation Solution
A multifunctional system that uses a single radio frequency (RF) energy source to power multiple devices, including an RF defroster, ultraviolet (UV) light source, and plasma source, allowing for various functions like rapid defrosting, bacteria control, and odor reduction within a compact and cost-effective framework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate equipment is added to provide additional functions (defrosting, air purification, anti-microbial capabilities), then functional versatility is improved, but device size and manufacturing cost increase
Solution Approach 1:
The patent implements a universal RF power source that can selectively power multiple different devices (defroster, UV source, plasma source) through a switching arrangement. This single RF power source replaces what would traditionally require multiple separate power supplies, thereby providing multiple functions while avoiding the space and cost penalties of having separate equipment for each function.
Solution Approach 2:
The patent combines multiple functional devices (defroster, UV light source, plasma source) into a single integrated system that shares a common RF power source. The switching arrangement enables these previously separate functions to be merged into one compact unit, reducing overall device size while maintaining functional versatility.
2Adaptability or versatility
If separate equipment is added to provide additional functions (defrosting, air purification, anti-microbial capabilities), then functional versatility is improved, but manufacturing cost increases
Solution Approach 1:
The patent implements a universal RF power source that can selectively power multiple different devices (defroster, UV source, plasma source) through a switching arrangement. This single RF power source replaces what would traditionally require multiple separate power supplies, thereby providing multiple functions while avoiding the space and cost penalties of having separate equipment for each function.
Solution Approach 2:
The patent combines multiple functional devices (defroster, UV light source, plasma source) into a single integrated system that shares a common RF power source. The switching arrangement enables these previously separate functions to be merged into one compact unit, reducing overall device size while maintaining functional versatility.
3Adaptability or versatility
If multiple devices are operated simultaneously, then functional capability is improved, but energy consumption increases
Solution Approach 1:
The switching arrangement enables periodic operation of different devices by selectively connecting them to the RF power source at different times. This allows the system to cycle through different functions (defrosting, UV sterilization, plasma generation) rather than operating all devices simultaneously, thereby reducing peak energy consumption while maintaining the ability to provide all required functions.
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
Enables multiple functions to be performed in a smaller space and at lower costs by utilizing a single RF power source, enhancing the efficiency and versatility of appliances like refrigerators and air purification systems.
Implementation Method 1
a multifunctional system that uses a single radio frequency (RF) energy source to power multiple devices
Implementation Method 2
an RF defroster...configured to receive a first RF signal at a first frequency to defrost the load within the first cavity
Implementation Method 3
ultraviolet (UV) light source...perform an air treatment process...UV sterilization
Implementation Method 4
plasma source...break down organic compounds in the air to slow the aging of the food and eliminate unpleasant odors
Data Source
AI summary
Example systems have a defrost system that can receive a first RF signal at a first frequency to defrost a load. An air treatment device can receive a second RF signal at a second frequency and perform an air treatment process. An RF signal source has a power output, and a switching arrangement selectively electrically connects the defrost system and the first air treatment device to the power output of the RF signal source. A controller can electrically connect one of the defrost system and the first air treatment device to the power output of the RF signal source. When the defrost system is electrically connected, the RF signal source outputs the first RF signal at the first frequency, and when the first air treatment device is electrically connected, the RF signal source outputs the second RF signal at the second frequency.