Filter module and air purifier comprising same
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Solution Overview
Problem
Conventional air purifiers replace both high and low filtration capacity filter portions simultaneously, leading to premature discard of the portion with less reduced filtration capacity, resulting in inefficient filter replacement.
Innovation Solution
A filter module comprising a first filter unit with a curved shape and a second filter unit with corresponding edges, allowing for detachable connection and differential air flow rates, enabling separate replacement of filter units based on filtration capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter is replaced when the average filtration capacity decreases, then the air purifier maintains acceptable performance, but the portion with less reduced filtration capacity is replaced along with the portion with significantly reduced filtration capacity, resulting in waste
Solution Approach 1:
The filter is divided into multiple independent filter portions (first filter portion, second filter portion, etc.) that can be separately replaced. Each filter portion has its own frame and filtering elements, allowing selective replacement based on individual filtration capacity degradation rather than replacing the entire filter assembly.
Solution Approach 2:
Different filter portions are designed with different air flow rates per unit area, creating local variations in filtration workload. The first filter portion has a higher air flow rate and degrades faster, while the second filter portion has a lower air flow rate and degrades slower, allowing differentiated replacement timing.
2Productivity
If the filter portions are designed with different air flow rates, then selective replacement becomes possible, but the filter structure becomes more complex with multiple detachable components
Solution Approach 1:
The filter assembly is segmented into multiple independent but similarly structured filter portions. Each portion maintains a consistent internal structure (frame, air inlet, air outlet, filtering elements) but can be independently detached and replaced, balancing structural consistency with replacement flexibility.
Solution Approach 2:
Multiple filter portions are combined into a single filter assembly that functions as one unit during operation, but can be disassembled into separate replaceable portions. The portions share common structural features and mounting mechanisms, reducing the complexity increment from having multiple components.
Data Source
AI summary
A filter module mounted on an air purifier to filter air includes a first filter unit and a second filter unit detachably connected to the first filter unit and arranged to surround the first filter unit. The first filter unit includes a shape-corresponding portion having at least a portion which is formed in a curved shape having a predetermined curvature. At least a portion of the edge of the second filter unit is formed in a shape corresponding to the shape-corresponding portion, and when the filter module is mounted on the air purifier, the amount of air passing through the first filter unit per unit area is greater than the amount of air passing through the second filter unit per unit area.