Rotating Dryer Lint Filter Assembly for Continuous Airflow
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Solution Overview
Problem
Existing dryer appliances face inefficiencies due to the difficulty in regularly cleaning lint from filters, which can restrict airflow and affect performance, leading to increased temperatures and potential damage to clothing.
Innovation Solution
A dryer appliance with a rotatable filter medium and a motor that positions different portions of the filter medium within the exhaust conduit to facilitate lint collection and storage, allowing for automatic rotation to ensure continuous airflow and prevent lint buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is used to collect lint from air flowing through the dryer appliance, then lint collection is improved, but air flow restriction increases and cleaning difficulty increases
Solution Approach 1:
The filter medium is divided into multiple segments or portions that can be independently positioned. The rotatable filter assembly allows different portions of the filter medium to be selectively placed within the exhaust conduit, enabling segmentation of the lint collection function from the cleaning maintenance function.
Solution Approach 2:
The filter assembly is made rotatable between different positions using a motor mechanism. This dynamic positioning allows the filter to transition between a lint collection position (within the exhaust conduit) and a cleaning position (outside the exhaust conduit), resolving the contradiction between effective lint collection and ease of cleaning.
2Productivity
If lint is allowed to accumulate on the filter, then filtering continues without interruption, but air flow restriction increases and temperature regulation fails
Solution Approach 1:
The system implements periodic rotation of the filter assembly between lint collection position and cleaning position. This periodic action allows the filter to accumulate lint during operation, then be automatically rotated to a cleaning position where lint is removed, maintaining both productivity and reliability through cyclic maintenance.
Solution Approach 2:
The motorized rotation system enables the filter assembly to automatically transition between positions without user intervention. The system serves itself by automatically positioning the filter for cleaning when needed, maintaining air flow and temperature control while continuing productive operation.
3Reliability
If the filter is cleaned frequently to maintain air flow, then temperature control is improved, but user time and convenience are reduced
Solution Approach 1:
The system performs preliminary positioning of the filter assembly to a cleaning position where lint can be easily removed. By pre-positioning the filter outside the exhaust conduit, the system prepares for cleaning action beforehand, reducing the actual time needed for maintenance while ensuring air flow and temperature regulation are maintained.
Solution Approach 2:
The motorized rotation system automatically positions the filter for cleaning without requiring user effort to manually access and clean the filter. This self-service mechanism reduces maintenance time by eliminating the manual manipulation required in traditional filter cleaning systems.
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 enables efficient lint collection and storage, maintaining optimal airflow and preventing temperature increases, thus enhancing the appliance's performance and reducing the risk of damage to clothing.
Implementation Method 1
The filter medium is rotatable between a first position and a second position. A motor is coupled to the filter medium. The motor is operable to rotate the filter medium between the first and second positions.
Implementation Method 2
A filter assembly is positioned at the exhaust conduit. The filter assembly includes a filter medium having a first portion and a second portion. The first portion of the filter medium is disposed within the exhaust conduit when the filter medium is in the first position.
Data Source
AI summary
A dryer appliance is provided. The dryer appliance includes a filter assembly with a filter medium. A first portion of the filter medium is disposed within an exhaust conduit when the filter medium is in a first position. A second portion of the filter medium is disposed within the exhaust conduit when the filter medium is in a second position. A method for operating a dryer appliance is also provided.