Air purification system and method for dynamic filtering and static sterilization and disinfection of central air conditioner
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Solution Overview
Problem
Existing central air conditioning systems face challenges in achieving effective sterilization and disinfection, particularly for large-scale air handling, due to difficulties in providing sufficient disinfection substance concentration, intensity, and contact time, leading to potential adverse health effects from ozone or ultraviolet exposure.
Innovation Solution
A dual-stage air purification system with parallel first and second sterilization and disinfection devices, each comprising filtering, adsorption, static electret, and sterilization units, operating in alternating cycles to ensure efficient bacteria and virus removal with reduced energy consumption and equipment size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large power ozone generator and large space volume equipment are used to provide sufficient disinfection concentration and contact time, then sterilization and disinfection effect is improved, but equipment size and energy consumption increase significantly
Solution Approach 1:
The patent divides the air purification system into multiple independent modules (filtration module, adsorption module, sterilization module) that can operate independently or in combination. This segmentation allows each module to be optimized for its specific function without requiring large overall equipment volume, while still achieving effective sterilization through the coordinated action of multiple smaller components.
Solution Approach 2:
The patent employs periodic operation cycles where the system alternates between filtration mode and sterilization mode. During filtration mode, air is cleaned and disinfected continuously at low concentration. During sterilization mode, the system periodically intensifies disinfection activity. This periodic action achieves effective sterilization over time without requiring continuously high power input or large equipment volume.
2Reliability
If large power ultraviolet light tubes and microwave generators are used to provide sufficient sterilization intensity, then sterilization and disinfection effect is improved, but energy consumption and equipment complexity increase
Solution Approach 1:
The patent combines multiple sterilization methods (ultraviolet radiation, ozone generation, and photocatalysis) into a unified sterilization module. This merging allows the system to achieve effective sterilization through the synergistic effect of multiple lower-intensity mechanisms rather than relying on a single high-power source, thereby reducing overall energy consumption while maintaining reliable disinfection performance.
Solution Approach 2:
The patent introduces photocatalytic materials as intermediaries that convert light energy into chemical reactions for sterilization. Instead of directly using high-power ultraviolet or microwave radiation, the system uses photocatalysts to mediate the sterilization process, which reduces energy consumption while maintaining effective disinfection capability.
3Reliability
If traditional dynamic sterilization and disinfection is used in the air circulating system, then sterilization coverage is improved, but harmful substances enter the activity space causing adverse health effects
Solution Approach 1:
The patent extracts the sterilization and disinfection processes from the main air circulation path. The system separates filtration/sterilization functions into independent modules that process air separately before returning it to the circulation system. This extraction ensures that harmful disinfection substances are contained and neutralized within dedicated modules rather than being dispersed throughout the activity space through the air circulation system.
Solution Approach 2:
The patent converts potentially harmful high-concentration disinfection substances into beneficial effects by using them in controlled, localized conditions within sterilization modules. The system uses ozone and ultraviolet radiation in confined spaces where they effectively sterilize air and surfaces, then ensures these substances are neutralized or removed before air returns to the activity space, thereby converting harmful agents into beneficial sterilization tools.
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 system effectively blocks bacteria and viruses, prevents cross-infection, and ensures safe operation with low energy consumption by alternating device use, maintaining high filtration efficiency and reducing equipment size and energy costs.
Implementation Method 1
an adsorption barrier unit, used for adsorbing bacteria and viruses
Implementation Method 2
a static electret unit, used for carrying out the static treatment on the electret air filter material forming the sub-high efficiency filter and/or the adsorption barrier unit and adding a static charge effect
Data Source
AI summary
An air purification system and air purification method for the dynamic filtering and static sterilization and disinfection of a central air conditioner, the purification system comprising a first sterilization and disinfection purification device (100), a second sterilization and disinfection purification device (200) and an air circulating device. The first sterilization and disinfection purification device (100) and the second sterilization and disinfection purification device (200) respectively control, according to different operation procedures, the opening and closing of valves (101, 201) that are respectively configured. The first sterilization and disinfection purification device (100) and the second sterilization and disinfection purification device (200) each comprise a filtering unit (103), an adsorption barrier unit (104), a static electret unit (107), a sterilization and disinfection unit (105) and an internal air circulating unit (106). The purification system filters, purifies and sterilizes and disinfects the air, thereby improving the ventilation environment and the ecological environment.