Air freshener
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Solution Overview
Problem
Existing air fresheners with electric dust collectors face issues such as poor contact between power terminals, risk of electric shock, and improper power supply due to high-voltage electromagnetic fields, leading to frictional wear and unintended power delivery.
Innovation Solution
A detachable electric dust collector design with a drawer system that includes gap prevention parts and a cutoff switch to ensure accurate terminal contact, prevent electromagnetic interference, and interrupt power supply when detached, reducing the risk of electric shock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable electric dust collector is designed for easy separation and coupling, then ease of operation is improved, but poor contact between power terminals occurs leading to unreliable power supply
Solution Approach 1:
A guide structure acts as an intermediary between the drawer and filter housing, providing alignment features that ensure proper positioning of power terminals during insertion. The guide structure includes positioning protrusions and recesses that mediate the connection between detachable and fixed components, guaranteeing reliable electrical contact while maintaining ease of operation.
2Ease of operation
If power terminals are exposed for easy connection, then ease of operation is improved, but frictional wear increases and unintended power delivery occurs
Solution Approach 1:
The power terminals are extracted from direct exposure and instead connected through a controlled insertion mechanism. The drawer system with guide structure allows terminals to connect only when properly positioned, preventing unintended power delivery. The connection is taken out of the continuous state and made discrete, occurring only during controlled insertion events.
3Device complexity
If high voltage components are disposed close to other parts for compact design, then device complexity is reduced, but electromagnetic field interference affects surrounding parts
Solution Approach 1:
The device is segmented into distinct functional zones: a high voltage generation section, a dust collection section, and a control section. Physical barriers and spacing are introduced between these segments to contain electromagnetic fields within the high voltage zone. This segmentation allows compact overall design while preventing electromagnetic interference from affecting other components.
4Ease of operation
If the drawer is allowed to move freely for easy withdrawal, then ease of operation is improved, but gaps form between the drawer and filter housing
Solution Approach 1:
The guide structure employs asymmetric design with positioning protrusions on one side and corresponding recesses on the other. This asymmetric configuration provides precise alignment in the critical insertion direction while allowing controlled movement in other directions. The asymmetric features ensure gaps are minimized at the power terminal interface while maintaining ease of drawer withdrawal.
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 solution enhances user safety by minimizing electric shock risks, preventing frictional wear, and ensuring reliable power delivery to the electric dust collector, while maintaining efficient air filtration and cleaning.
Implementation Method 1
Dust is electrified as the result of corona discharge between the discharge electrodes and the opposite electrodes
Implementation Method 2
an electric dust collector for generating an electric field to collect electrified dust particles
Data Source
AI summary
An air freshener is disclosed. The air freshener includes a body case defining the air freshener, the body case having a filter installation opening formed in one side thereof, a filter housing disposed in the body case, the filter housing having a power terminal disposed therein, a drawer configured to be withdrawn from the inner space of the filter housing through the filter installation opening, and an electric dust collector separably located in the drawer, the electric dust collector having a power-receiving terminal disposed therein, wherein the power terminal contacts the power-receiving terminal in the state in which the drawer is settled in the inner space of the filter housing.