Dual filtration and auto cleansing mechanism
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Solution Overview
Problem
Manual cleaning of HVAC filters is tedious and time-consuming, leading to reduced airflow efficiency and a shorter filter life due to clogging with dirt, dust, and microorganisms.
Innovation Solution
A cleanable filtration system with a continuous filter and a drive system that moves the filter relative to an inlet opening, combined with a cleaning jet and brushes to automatically clean the filter, either on demand, by schedule, or based on sensed parameters, using a motor-driven mechanism and supports for frictional engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual cleaning of filters is performed, then the filter can be cleaned, but the process is tedious and time-consuming
Solution Approach 1:
The filter system performs self-cleaning through an automated mechanism that moves the filter through a cleaning station with spray nozzles and brushes, eliminating the need for manual intervention and significantly reducing maintenance time
Solution Approach 2:
The filter is designed as a continuous moving belt rather than a static element, allowing it to be dynamically transported through the cleaning station by a drive system with rollers, enabling automated cleaning operations
2Productivity
If filters are left unclogged, then airflow efficiency is maintained, but periodic cleaning is required which reduces efficiency
Solution Approach 1:
The continuous filter belt operates continuously without interruption, and the cleaning process is integrated into the continuous operation, ensuring airflow efficiency is maintained without periodic shutdowns for cleaning
3Extent of automation
If automated cleaning mechanism is added, then cleaning time is reduced, but device complexity increases
Solution Approach 1:
The drive system with rollers serves multiple functions: it transports the continuous filter belt through the system and simultaneously provides the mechanical contact needed for brushing cleaning, reducing the need for separate dedicated components
Solution Approach 2:
The cleaning functions (spray washing and mechanical brushing) are merged into a single integrated cleaning station, and the drive mechanism is combined with the filter support structure, simplifying the overall system architecture
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
Automated filter cleaning extends the life of HVAC systems, improves air quality, and reduces maintenance time, ensuring consistent airflow efficiency while being compatible with existing equipment for retrofit or integration in new systems.
Implementation Method 1
A cleaning jet is positioned to spray a cleaning fluid on an adjacent portion of the continuous filter
Implementation Method 2
The at least one support is frictionally engaged with the continuous filter
Data Source
AI summary
A cleanable filtration system for an air conditioning system includes a continuous filter positionable adjacent to an inlet opening in the air conditioning system and a drive system operably coupled to the continuous filter to move the continuous filter relative to the inlet opening. A cleaning jet is positioned to spray a cleaning fluid on an adjacent portion of the continuous filter.