Electrostatic HVAC Filter Layout for Low Pressure Loss
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Solution Overview
Problem
Air conditioning filters face challenges in maintaining high dust collection efficiency while minimizing pressure loss, especially when handling large airflow, which leads to increased filter replacement frequency and environmental impact due to contamination and space requirements.
Innovation Solution
A filter device with an integrated electric dust collection unit and a guide system allowing for detachable installation of filter units, including HEPA filters, along with a series or parallel configuration, reduces pressure loss and extends filter replacement intervals by using an electric dust collection mechanism and elastic separation prevention members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cross sectional area of the filter is increased to handle large airflow, then the airflow capacity is improved, but the space occupied by the air conditioning duct increases
Solution Approach 1:
The patent places the electric dust collection unit inside the filter housing, creating a nested configuration where one component is housed within another. This allows the dust collection functionality to be integrated without increasing the external dimensions of the filter, thereby maintaining compact duct space while improving airflow handling capacity through enhanced dust collection efficiency
Solution Approach 2:
The patent combines the filter and electric dust collection unit into a single integrated device. By merging these two functions into one unit, the system achieves both filtration and electrostatic dust collection without requiring separate components, thus improving airflow capacity while avoiding additional space occupation
2Reliability
If regular filter replacement is performed to maintain dust collection efficiency, then the dust collection efficiency is maintained, but the disposal cost and environmental load increase
Solution Approach 1:
The patent enables recovery and reuse of the dust collection medium by providing a cleaning mechanism that removes accumulated dust from the electric dust collection unit. This allows the dust collection medium to be regenerated and reused multiple times, significantly reducing filter disposal frequency and associated environmental impact while maintaining consistent dust collection efficiency
Solution Approach 2:
The patent incorporates an automatic or manual cleaning mechanism that allows the dust collection unit to be regenerated in place. This self-service capability enables the system to restore its own dust collection efficiency without requiring complete filter replacement, thereby reducing waste and disposal costs
3Productivity
If the airflow through the filter is increased, then the productivity is improved, but the loss of pressure increases and dust collection efficiency decreases
Solution Approach 1:
The patent introduces an electric dust collection unit as an intermediary mechanism between the airflow and the filter. This electrostatic precipitation stage pre-captures dust particles before they reach the filter, reducing the burden on the filter and allowing higher airflow rates without excessive pressure loss, thereby maintaining dust collection efficiency at improved productivity levels
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 enhances dust collection efficiency with reduced pressure loss, lowers fan load, and decreases energy consumption while allowing for flexible duct configurations, reducing filter replacement costs and environmental impact.
Implementation Method 1
an electric dust collection unit provided inside the case
Data Source
AI summary
Disclosed is a filter device for air conditioning in which pressure loss is low and dust collection efficiency is high. In the filter device for air conditioning installed in an air-conditioning duct, the filter device for air conditioning includes: a case; an electrical dust collection unit provided inside the case; at least one filter unit provided so as to make contact with the electrical dust collection unit; and a guide unit provided such that the electrical dust collection unit and the filter unit can be detachably installed.