Roll-Fed Vacuum Filter Cartridge for Continuous Airflow
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Solution Overview
Problem
Upright vacuum cleaners with separation modules often experience clogged foam filters in the exhaust grill, which inhibits air flow and requires users to stop vacuuming or replace the filter, disrupting operation.
Innovation Solution
A vacuum cleaner design featuring a cyclone separator with a filter assembly that includes a roll of filter media overlying the exhaust grill openings, allowing for automatic advancement of fresh filter media to replace soiled sections, eliminating the need for manual filter removal and maintenance during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a foam filter is provided in the exhaust grill to filter air, then air filtration is improved, but the filter becomes clogged with debris during operation, inhibiting airflow and requiring manual intervention
Solution Approach 1:
The filter assembly transitions from a static foam filter to a dynamic roll-fed filter media system. The filter media is wound on a supply reel and fed through the exhaust grill openings continuously, allowing the system to adapt to debris accumulation by advancing fresh filter material automatically or semi-automatically, thus maintaining filtration effectiveness without manual intervention.
Solution Approach 2:
The filter assembly incorporates a take-up reel that automatically winds the used filter media, and a supply reel that feeds fresh filter media. This self-service mechanism allows the filter system to replenish itself during operation, eliminating the need for users to manually remove and replace clogged filters, thereby ensuring continuous operation.
2Reliability
If a foam filter is used in the exhaust grill, then debris is filtered from air, but the filter requires manual cleaning or replacement, disrupting vacuuming operation
Solution Approach 1:
The roll-fed filter media system ensures continuous filtration action by providing an uninterrupted supply of fresh filter material. As the filter media is consumed, it is automatically replenished from the supply reel, maintaining continuous air filtration without operational interruptions for filter replacement.
Solution Approach 2:
The system automatically discards used filter media by winding it onto the take-up reel, and recovers the filter function by continuously feeding fresh media from the supply reel. This automated discard and recover process eliminates manual intervention and maintains continuous operation.
3Ease of operation
If a roll-fed filter media system is implemented, then automatic filter replacement is achieved, but the device complexity increases with supply reel, take-up reel, and filter assembly mechanisms
Solution Approach 1:
The filter assembly merges multiple functions into a single integrated unit: the supply reel, take-up reel, filter media feed mechanism, and exhaust grill integration are combined into one compact assembly. This merging reduces the overall system complexity compared to having separate manual filter replacement systems while achieving automatic filter advancement.
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
This solution ensures continuous operation by automatically replacing soiled filter media, preventing airflow inhibition and reducing user intervention for filter maintenance, enhancing operational efficiency and convenience.
Implementation Method 1
Some separation modules use frusto-conical-shaped separators and others use high-speed rotational motion of the air/debris to separate the debris (which may include dirt, dust, soil, hair, and other debris) by centrifugal force.
Implementation Method 2
a roll of filter media having a portion overlying the at least one opening of the exhaust grill to filter air passing through the exhaust grill
Data Source
AI summary
A vacuum cleaner with a separation module includes an advanceable filter media for filtering a debris-containing working airstream. The filter media can extend over an exhaust grill having openings through which air may pass. The filter media can be mounted on a pair of moveable reels, such that the filter media can periodically be replaced with new filter media.