Integrated UV Air Purifier with Segmented Sterilization
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Solution Overview
Problem
Existing air purifiers are prone to secondary pollution due to bacterial growth on filters, ultraviolet sterilization equipment ages quickly, and have complex structures with separate filtration and sterilization systems, leading to reduced efficiency.
Innovation Solution
A novel disinfection purifier design integrates filtration and sterilization with a disinfection portion wrapped by a filter portion, using multiple ultraviolet light sources and a conical baffle to block UV light leakage, while the filter portion is easily replaceable and the structure is optimized for improved efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultraviolet sterilization is used to prevent bacterial growth on filters, then sterilization effect is improved, but internal components age quickly and device reliability deteriorates
Solution Approach 1:
The device segments the sterilization function into two parts: pre-filter sterilization using UV-C lights positioned before the filter screen, and post-filter air sterilization using UV-A lights positioned after the filter. This segmentation allows targeted sterilization without exposing all internal components to high-intensity UV-C radiation continuously, thereby extending component service life while maintaining sterilization effectiveness.
Solution Approach 2:
Different regions of the device use different types of ultraviolet lights with different wavelengths and intensities tailored to specific needs: UV-C (200-280nm) is used locally where bacterial contamination is most severe (pre-filter and filter surface), while UV-A (315-400nm) is used in regions where gentler sterilization is sufficient (post-filter air treatment). This local quality approach optimizes sterilization effect while minimizing damage to internal components.
2Reliability
If separate filtration and sterilization devices are designed, then each device can be optimized independently, but device structure becomes complex and working efficiency decreases
Solution Approach 1:
The patent merges the filtration device and sterilization device into a single integrated air purifier. The filter assembly and ultraviolet sterilization assembly are combined in one housing, with the filter screen positioned to work in conjunction with pre-filter and post-filter UV lights. This merging eliminates the need for separate devices, simplifies the overall structure, and improves working efficiency by processing air through both filtration and sterilization in one pass.
Solution Approach 2:
The integrated device performs multiple functions simultaneously: mechanical filtration through the filter screen, pre-filter sterilization using UV-C lights, post-filter air sterilization using UV-A lights, and air circulation. This multi-functionality eliminates the need for separate specialized devices while maintaining or enhancing the performance of each individual function.
3Duration of action of stationary object
If filter screen is made durable and long-lasting, then device reliability is improved, but bacterial growth on filter leads to secondary pollution of purified air
Solution Approach 1:
The device applies preliminary sterilization action by positioning UV-C lights before the filter screen to sterilize incoming air and the filter surface before bacteria can accumulate. This preliminary action prevents bacterial growth on the filter, eliminating the source of secondary pollution while allowing the filter to maintain its long service life without degradation from bacterial contamination.
4Reliability
If multiple ultraviolet light sources are used to enhance sterilization, then sterilization effect is improved, but device complexity and energy consumption increase
Solution Approach 1:
The device uses different types of ultraviolet lights (UV-C and UV-A) in different locations based on specific sterilization needs. UV-C lights are used where intense sterilization is required (pre-filter and filter surface), while UV-A lights are used where gentler sterilization is sufficient (post-filter air). This targeted approach achieves comprehensive sterilization效果 without unnecessarily increasing the number of light sources or energy consumption.
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 integrated design prevents UV-induced aging, ensures safer operation, enhances working efficiency, and allows for easy filter replacement, while maintaining effective air sterilization and filtration without compromising air outlet performance.
Implementation Method 1
External air enters the disinfection portion after being filtered by the filter portion
Implementation Method 2
The novel disinfection purifier includes a plurality of ultraviolet light sources disposed in the disinfection portion
Data Source
AI summary
Some embodiments of the present disclosure disclose a novel disinfection purifier. The novel disinfection purifier includes: a purifier housing, and a purification device body and an air suction device disposed inside the purifier housing. Air passes through the purification device body by means of the air suction device and is sterilized. An air inlet is provided on a side wall of the purifier housing, or an air inlet is provided on a bottom of the purifier housing, or an air inlet is provided on a side wall of the purifier housing and a bottom of the purifier housing, and an air outlet is provided on a top of the purifier housing. The purification device body includes a disinfection portion and a filter portion sleeving an outside of the disinfection portion.