Lint Filter Housing Layout for Uniform Dryer Exhaust Filtration
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Solution Overview
Problem
Conventional lint catching systems for clothes dryers are inefficient in removing lint from exhaust air, leading to unsanitary conditions and reduced drying efficiency due to humidity increases and mold growth, as well as incomplete lint filtration.
Innovation Solution
A lint filter housing with a specific configuration that enhances laminar flow and uniform velocity of exhaust air, ensuring effective deposition of lint onto filtration material, reducing lint deposition on internal chamber walls and increasing filtration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exhaust air is exposed to liquid for lint removal, then lint is trapped, but moisture level increases and humidity in interior room increases
Solution Approach 1:
The patent introduces a filter material as an intermediary substance between the exhaust air and the interior room environment. This filter material directly captures lint particles through physical filtration without requiring liquid exposure, thereby removing lint effectively while avoiding the moisture transfer problem that occurs with liquid-based methods.
2Reliability
If liquid is used to trap lint, then lint is removed from exhaust air, but mold growth and noxious odors occur when liquid is not cleaned frequently
Solution Approach 1:
The patent employs a disposable or easily replaceable filter material that captures lint through physical filtration. Unlike liquid systems that require frequent cleaning and maintenance to prevent mold growth, the filter material can be replaced when saturated, eliminating the sanitation problems associated with standing liquid and mold contamination.
3Reliability
If filter housing reduces exhaust air velocity for lint deposition, then lint collects on filter material, but aggregated lint further reduces velocity and exacerbates lint aggregation on internal surfaces
Solution Approach 1:
The patent segments the filter housing into distinct functional zones: an exhaust air reception chamber that maintains higher velocity to prevent lint aggregation on internal surfaces, and a filtration chamber where controlled deposition occurs on the filter material. This spatial segmentation allows the system to achieve effective lint capture on the filter while preventing the harmful aggregation problem on housing surfaces.
4Ease of manufacture
If conventional mesh screen filter is used, then some lint is entrapped, but substantial amount of lint remains in exhaust air
Solution Approach 1:
The patent employs a composite filtration system consisting of a mesh screen filter for initial lint capture and a secondary filter material with higher filtration efficiency for capturing remaining fine particles. This composite approach combines the simplicity and robustness of mesh screens with the superior filtration performance of advanced filter materials, achieving complete lint removal while maintaining ease of manufacture.
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 effectively captures lint from exhaust air, maintaining indoor air quality and dryer efficiency by ensuring complete lint filtration and preventing mold growth, while allowing safe venting of filtered air into interior spaces.
Implementation Method 1
enhances laminar flow and uniform velocity of exhaust air
Implementation Method 2
ensuring effective deposition of lint onto filtration material
Implementation Method 3
support a filtration material configured to remove the lint from the exhaust air
Data Source
AI summary
A lint catching system is provided for a clothes dryer. The lint catching system filters lint from exhaust air expelled from the clothes dryer.