Capacitive Switch Air Cleaner for Compact Filter Maintenance
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Solution Overview
Problem
Small air cleaners face challenges in easy filter replacement and attachment due to difficult disassembly, and require small internal components and light-touch operable switches to prevent movement or falling, especially when installed in narrow spaces.
Innovation Solution
The air cleaner design includes a body with air suction holes, a metal casing with a flow creation mechanism, a capacitive switch with a conductive gasket, and a UV module, allowing for easy filter replacement and light-touch operation, with a support fin and guide portions for assembly stability and UV light emission for photocatalytic filter activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the air cleaner is designed to be small for installation in narrow spaces, then the device size is reduced, but the internal components and switches become difficult to operate reliably
Solution Approach 1:
The patent replaces mechanical push switches with a capacitive touch switch that operates through electrical field detection. The capacitive switch is exposed through a hole in the casing, allowing users to operate it by light touch without mechanical movement that could cause the device to move or fall in narrow installation spaces.
2Volume of moving object
If the air cleaner is designed as a compact unit, then space consumption is reduced, but filter replacement becomes difficult due to inability to disassemble
Solution Approach 1:
The patent divides the air cleaner into separable modules: a main body and a detachable cover. The cover can be easily removed to access and replace filters, while the main body contains the motor and control components. This segmentation allows compact overall design while maintaining ease of filter maintenance.
3Volume of moving object
If the switch is made small for compact design, then the device maintains small size, but light touch operation causes the air cleaner to move or fall
Solution Approach 1:
The patent replaces mechanical push switches with a capacitive touch switch that operates through electrical field detection. The capacitive switch is exposed through a hole in the casing, allowing users to operate it by light touch without mechanical movement that could cause the device to move or fall in narrow installation spaces.
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 easy filter replacement and light-touch operation, reducing assembly defects and improving product quality by facilitating disassembly and assembly while ensuring reliable airflow and photocatalytic efficiency.
Implementation Method 1
a capacitive switch partially exposed outside the casing through a switch exposure hole defined through the casing
Implementation Method 2
A photocatalytic filter is fabricated by coating an air-permeable material, such as metal foam or porous metal, with a photocatalytic material such as TiO2, ZnO, ZrO2, or WO3, and can generate hydroxyl radicals to decompose contaminants or odorous substances when irradiated with UV light
Implementation Method 3
can generate hydroxyl radicals to decompose contaminants or odorous substances when irradiated with UV light
Data Source
AI summary
An air cleaner includes: a body formed with an air suction hole defined on a side of the body, and allowing air to be introduced into the body therethrough; a metal casing into which an upper section of the body is inserted from below; a flow creation mechanism disposed inside the casing to create an air flow into and through the air cleaner; a filter disposed in the body between the air suction hole and the flow creation mechanism configured to purify air; a capacitive switch partially exposed outside the casing through a switch exposure hole defined through the casing; and a printed circuit board (PCB) disposed between one side wall of the upper section of the body and an inner wall of the casing.