Self-Cleaning HVAC Filter Wall for Low Airflow Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
HVAC filters in heating, ventilation, and air-conditioning systems become clogged with particulates, leading to increased air flow resistance, higher energy consumption, reduced ventilation, and the buildup of CO2 and VOCs, resulting in decreased indoor air quality and increased operational costs.
Innovation Solution
The implementation of self-cleaning filter assemblies and systems that automatically clean filters and filter walls within HVAC systems. These systems include self-cleaning casings with injection ports for cleaning solutions, drainage ports for wastewater, and programmable logic controllers to govern cleaning cycles, ensuring efficient operation and peak filtration performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filters are manually installed and replaced every 2-12 months, then filtration function is maintained, but operational costs increase and energy consumption rises due to frequent replacements
Solution Approach 1:
The filter assembly performs self-cleaning through an automated system that injects cleaning solution through injection ports, flushes particulates through drainage ports, and uses a recoverable container to collect and reuse cleaning solution, eliminating the need for manual replacement and reducing operational costs
2Use of energy by moving object
If filters are left in place for extended periods to reduce replacement frequency, then operational costs decrease, but air flow resistance increases and energy consumption rises
Solution Approach 1:
The automated cleaning system operates on a scheduled basis to continuously maintain filter performance, injecting cleaning solution and flushing particulates at regular intervals to prevent air flow resistance buildup, ensuring continuous optimal air flow and energy efficiency
3Ease of operation
If filters are cleaned manually, then cleaning function is provided, but system complexity increases and automation is reduced
Solution Approach 1:
The system automates the cleaning function through programmable logic controllers that automatically control injection ports, drainage ports, and recoverable containers, eliminating manual intervention while managing system complexity through integrated control
4Reliability
If cleaning solution is used and disposed of after each cleaning cycle, then cleaning effectiveness is maintained, but water consumption and waste generation increase
Solution Approach 1:
The system recovers cleaning solution from the filter assembly through drainage ports and stores it in recoverable containers, then reuses the recovered solution in subsequent cleaning cycles, significantly reducing water consumption and waste generation while maintaining cleaning effectiveness
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 automated cleaning of HVAC filters and filter walls reduces air flow resistance, decreases energy consumption, improves indoor air quality by enhancing ventilation, and extends the lifespan of heat transfer coils by preventing premature fouling.
Implementation Method 1
flushing a cleaning solution through the filter wall
Data Source
AI summary
Devices, systems, and methods for the automated cleaning of filters and filter walls within heating, ventilation, and air-conditioning (HVAC) systems. Disclosed devices can include self-cleaning filter assemblies configured to receive and surround at least one filter, such as an HVAC filter. In some embodiments, the self-cleaning assemblies receive and surround at least one filter and at least one fan. For example, at least one filter or filter wall comprising multiple filters and fan may be combined together into a single cube, where the cube is then received and surrounded by the self-cleaning casing. In some embodiments, the self-cleaning assemblies or cubes receive and surround at least one filter, at least one fan, and at least one heat transfer coil. The cleaning system can have different cleaning cycles, such as a cleaning cycle that cleans the filter(s) and a different cleaning cycle that cleans the heat transfer coil.