Laundry Appliance Air Filter with Automatic Brush-Based Self-Cleaning
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Solution Overview
Problem
Conventional laundry appliances with air filters face challenges due to the need for frequent cleaning, especially when the filter is difficult to access, leading to potential performance impairment if not properly maintained.
Innovation Solution
A laundry appliance with an automatically self-cleaning air filter system, where a brush is in contact with the air filter and a motor rotates the air filter past and across the brush to clean it, ensuring continuous filtration without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an air filter is installed in the laundry appliance to trap particles, then the heating system performance is protected, but the filter requires frequent manual cleaning and may create undesired conditions if not cleaned regularly
Solution Approach 1:
The air filter automatically cleans itself through a self-contained mechanism where a motor rotates the filter assembly and a brush contacts the filter surface to remove trapped particles. This self-service capability eliminates the need for frequent manual cleaning by users while maintaining heating system performance protection.
Solution Approach 2:
The filter assembly is made dynamically movable through motor-driven rotation, allowing the filter to be actively rotated into contact with the cleaning brush. This dynamic mechanism transforms the static filter into an actively self-cleaning component, resolving the contradiction between protection function and cleaning accessibility.
2Device complexity
If the air filter is positioned in a compact location within the appliance, then the appliance structure is optimized, but the filter becomes difficult or inconvenient for users to access for cleaning
Solution Approach 1:
By implementing automatic self-cleaning functionality, the system eliminates the need for user access to the filter for cleaning purposes. The filter's compact positioning is maintained for structural optimization, while the self-service mechanism handles maintenance automatically, resolving the accessibility contradiction.
Solution Approach 2:
The cleaning function is extracted from manual user operation and transferred to an automated mechanical system. The brush and motor assembly forms a separate self-contained cleaning mechanism that operates independently within the compact structure, allowing the filter to remain in its optimized position without compromising maintenance capability.
3Reliability
If manual cleaning of the air filter is required, then the filter can be maintained, but user forgetfulness or inconvenience leads to improper cleaning frequency and potential performance impairment
Solution Approach 1:
The air filter system performs its own maintenance through automated rotation and brush contact cleaning. This self-service approach ensures consistent cleaning frequency without relying on user memory or intervention, maintaining filter effectiveness while maximizing automation of the cleaning maintenance task.
Solution Approach 2:
The system incorporates monitoring capabilities that track filter condition and cleaning status, providing feedback to ensure proper maintenance. This feedback mechanism works in conjunction with the automated cleaning to guarantee filter effectiveness is maintained through appropriate cleaning frequency.
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 automatic self-cleaning feature ensures that the air filter remains effective throughout the appliance's operation, preventing particle accumulation and maintaining the efficiency of the heating system, without requiring frequent manual cleaning.
Implementation Method 1
The motor is configured to rotate the air filter past and across the brush to thereby clean the air filter
Implementation Method 2
a brush in contact with the air filter along one edge of the air filter
Data Source
AI summary
A laundry appliance includes a cabinet that defines an interior volume with a laundry basket rotatably mounted therein. The laundry basket defines a chamber for the receipt of articles for treatment. The laundry appliance also includes a heating system in thermal communication with the chamber whereby heated air flows from the heating system to the chamber. An air filter is positioned between the laundry basket and the heating system upstream of the heating system, whereby a flow of return air from the chamber passes through and is filtered by the air filter before flowing to the heating system. The laundry appliance also includes a brush in contact with the air filter along one edge of the air filter and a motor operatively connected to the air filter. The motor is configured to rotate the air filter past and across the brush to thereby clean the air filter.