Air Purifier Filter Detection Module to Prevent Unsafe Operation
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Solution Overview
Problem
Existing air purifiers lack effective mechanisms to ensure that both the dust collection filter and pre-filter are properly mounted and functioning, which can lead to reduced air quality and potential safety hazards.
Innovation Solution
An air purifier design that includes a detection module with first and second sensors to detect the presence of the dust collection filter and pre-filter, respectively, and a control unit that operates the air purifier only when both filters are mounted, ensuring optimal air filtration and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the air purifier operates without filter mounting detection, then the device complexity is reduced, but the reliability of air filtration is compromised
Solution Approach 1:
The detection module performs preliminary detection of filter assembly mounting status before the air purifier operates. The control unit checks the detection signal and prevents operation until proper filter assembly is detected, ensuring filtration reliability is maintained without requiring complex continuous monitoring during operation.
2Reliability
If the detection module continuously monitors filter status, then the reliability of air filtration is improved, but the device complexity increases
Solution Approach 1:
The detection module performs a single preliminary check at startup rather than continuous monitoring. This preliminary detection is sufficient to ensure reliability since filters are not installed/removed during operation, thereby avoiding the complexity of continuous monitoring systems while maintaining adequate filtration reliability.
3Ease of operation
If the air purifier allows operation without both filters mounted, then the ease of operation is improved, but the safety hazards increase
Solution Approach 1:
The control unit applies preliminary anti-action by preventing the air purifier from operating when the detection module indicates that both filters are not properly mounted. This pre-prevention approach blocks harmful operation before it can occur, ensuring safety without requiring complex user verification steps that would reduce ease of operation.
Data Source
AI summary
An air purifier is provided. The air purifier includes a housing, an inner frame arranged inside the housing, a filter assembly configured to remove foreign substances from air introduced into the housing, and to be detachably mounted on the inner frame, and a detection module configured to detect whether the filter assembly is mounted, wherein the filter assembly includes a dust collection filter detachably mounted on the inner frame in a mounting direction (AX), and a pre-filter detachably mounted on the dust collection filter in a direction parallel to the mounting direction, and is arranged on a flow path that is toward the dust collection filter, and wherein the detection module includes a first sensor provided in the inner frame to detect whether the dust collection filter is mounted, and a second sensor provided in the inner frame to detect whether the pre-filter is mounted.