Self-Cleaning Lint Filter with Automatic Compaction for Dryers
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Solution Overview
Problem
Existing laundry appliances require frequent intervention for lint removal, which is inefficient and can obstruct airflow, reducing the appliance's operational efficiency.
Innovation Solution
A laundry appliance with a lint removal system that includes a blower, a cyclonic lint filter, and a disposal mechanism that uses gravity and a compactor to convert lint into pellets, allowing for continuous operation and minimal maintenance, with the option of a horizontally positioned filter screen and cyclonic separator for effective particulate separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lint filter is used to separate particulate matter from process air, then lint removal effectiveness is improved, but airflow obstruction increases and requires frequent manual intervention
Solution Approach 1:
The system employs a self-cleaning mechanism where a second blower reverses airflow through the lint filter to dislodge and remove accumulated lint particles automatically. This self-service approach eliminates the need for frequent manual intervention while maintaining effective lint separation, resolving the contradiction between removal effectiveness and operational ease.
Solution Approach 2:
The lint removal system operates periodically rather than continuously, with the second blower activating at intervals to reverse airflow and clear the filter. This periodic self-cleaning action maintains lint removal effectiveness while minimizing disruption to the primary drying function, addressing the manual intervention frequency issue.
2Reliability
If a lint filter accumulates entrapped lint particles, then lint removal effectiveness is improved, but airflow obstruction increases reducing operational efficiency
Solution Approach 1:
The system automatically removes accumulated lint from the filter using a second blower that reverses airflow through the filter media. This self-service lint removal prevents airflow obstruction that would otherwise reduce operational efficiency, while maintaining the filter's lint capture effectiveness.
Solution Approach 2:
The system incorporates a sensor that detects when the filter becomes obstructed and triggers the self-cleaning cycle. This feedback mechanism ensures that lint removal effectiveness is maintained by automatically clearing the filter before significant airflow obstruction occurs, thereby preserving operational efficiency.
3Reliability
If manual lint removal is required frequently, then lint filter effectiveness is maintained, but loss of time increases and user convenience decreases
Solution Approach 1:
The system automatically performs lint removal through reversed airflow generated by the second blower, eliminating the need for user intervention. This self-service mechanism maintains filter effectiveness while completely eliminating the time users would otherwise spend on manual lint removal.
Solution Approach 2:
The system performs preliminary self-cleaning of the lint filter during or between drying cycles, preventing lint accumulation that would require manual removal. This preliminary action maintains filter effectiveness without requiring user time for intervention.
4Reliability
If a cyclonic separator is used for particulate separation, then separation efficiency is improved, but device complexity increases
Solution Approach 1:
The system uses pneumatic principles with a second blower to create reversed airflow through the lint filter, generating forces that dislodge and remove accumulated lint particles. This pneumatic approach achieves effective particulate separation without requiring complex mechanical moving parts, thereby improving separation efficiency while limiting device complexity.
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 system ensures continuous operation with reduced maintenance, maintaining airflow efficiency by automatically removing and compacting lint into pellets, which can be easily disposed of, thereby enhancing the appliance's performance and user convenience.
Implementation Method 1
A cyclonic lint filter is positioned within the airflow path that separates particulate matter from the process air
Implementation Method 2
A cyclonic lint filter is positioned within the airflow path that separates particulate matter from the process air
Implementation Method 3
a compactor to convert lint into pellets
Implementation Method 4
uses gravity and a compactor to convert lint into pellets
Data Source
AI summary
A laundry appliance includes a drum for processing laundry. A blower delivers process air through an airflow path that includes the drum. A lint filter is positioned within the airflow path that separates particulate matter from the process air to define entrapped lint particles. A lint disposal mechanism removes the entrapped lint particles from a surface of the lint filter to define removed lint. A holding compartment receives the removed lint for disposal.