Filter Systems with Dirty Air Chamber Spacer Elements
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Solution Overview
Problem
Conventional filter systems experience reduced filter life due to increased air velocities in the dirty air chamber, which can abrade filter elements and reduce their effectiveness.
Innovation Solution
The filter systems described herein include spacer elements, such as venturi elements, positioned in the dirty air chamber to increase its volume and reduce air velocities, thereby minimizing abrasion on the filter elements. Additionally, the dirty air stream is directed to contact the spacer elements before reaching the filter elements, potentially depositing particulate matter directly into a collection hopper, reducing the load on the filter elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dirty air chamber volume is increased, then air velocities are reduced and filter element abrasion is minimized, but the device complexity increases due to additional spacer elements
Solution Approach 1:
The dirty air chamber is segmented into multiple regions by introducing spacer elements that divide the space between the tubesheet and the opposite wall. This segmentation creates distinct flow paths and reduces overall air velocity while maintaining a compact overall chamber volume, thus improving filter element life without proportionally increasing device complexity
Solution Approach 2:
Spacer elements act as intermediary structures positioned between the tubesheet and the opposite wall in the dirty air chamber. These intermediaries create additional flow paths and reduce direct high-velocity airflow contact with filter elements, thereby protecting them from abrasion while adding only moderate structural complexity
2Speed
If the dirty air chamber volume is increased, then air velocities are reduced, but the manufacturing cost increases due to additional materials and assembly steps
Solution Approach 1:
The spacer elements are designed with adjustable parameters including thickness, spacing distance from the tubesheet, and material composition. By optimizing these parameters, the system achieves effective velocity reduction with minimal material usage and assembly complexity, thereby reducing manufacturing cost while still achieving the desired air velocity reduction
3Duration of action of stationary object
If spacer elements are added to the dirty air chamber, then filter element life is extended, but the device complexity and manufacturing cost increase
Solution Approach 1:
The spacer elements serve multiple functions simultaneously: they structurally support the filter elements, divide the dirty air chamber into regions, reduce airflow velocity, and prevent direct high-velocity contact with filter elements. This multi-functionality extends filter element service life while minimizing the increase in device complexity, as a single component performs multiple protective roles
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 placement of spacer elements in the dirty air chamber reduces air velocities and abrasion on filter elements, extending their life and improving the overall efficiency of the filter system by reducing particulate loading.
Implementation Method 1
the spacer elements may be in the form venturi elements that have a constricted throat between an inlet and an outlet
Data Source
AI summary
Filter systems and methods described herein include one or more spacer elements portioned in the dirty air chamber along with the filter elements attached to the spacer elements. The dirty air inlet delivers a dirty air streams into the dirty air chamber along a dirty air flow axis.