Angled Pulse Cleaning for Filter Media Pressure Loss
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Solution Overview
Problem
Existing air cleaner and dust collector systems face inefficiencies in filter cleaning due to the need for the exhaust jet to fill the filter opening normally and in-line with filtration flow, which can lead to pressure loss and inadequate cleaning of filter media.
Innovation Solution
A method and apparatus for pulse cleaning filter media in air cleaners, where a fluid pulse is directed at an angle not normal to the tubesheet opening and not in-line with the filtration flow, utilizing a plurality of blow pipes to orient the pulse effectively, and an accumulator arrangement to manage the pulse expansion and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the exhaust jet is directed normal to the tubesheet opening and in-line with filtration flow, then the filter opening can be filled effectively, but pressure loss increases and cleaning efficiency decreases
Solution Approach 1:
The blow pipe is positioned and oriented asymmetrically relative to the tubesheet opening and filtration flow direction. The fluid pulse is directed at an angle that is neither normal nor in-line with the opening, creating an asymmetric cleaning pattern that improves debris removal while reducing pressure loss compared to symmetric (normal/in-line) approaches
Solution Approach 2:
The cleaning approach transitions from two-dimensional (normal to opening plane) or one-dimensional (in-line with flow) pulse delivery to a three-dimensional angled approach. By directing the pulse at an intermediate angle, the cleaning action encompasses multiple dimensions simultaneously, improving cleaning effectiveness without the pressure loss penalties of traditional approaches
2Area of stationary object
If the exhaust jet fills the filter opening normally, then the cleaning coverage is maximized, but the pulse diameter remains limited and pressure loss increases
Solution Approach 1:
By directing the fluid pulse at an angled orientation rather than normally to the opening plane, the pulse expands in a three-dimensional pattern that creates a larger effective cleaning diameter. This angular approach allows the pulse to cover a greater area while maintaining lower pressure loss compared to normal incidence
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
This approach enhances the cleaning efficiency of filter media by creating a larger pulse diameter and reducing pressure loss, ensuring effective debris removal without compromising primary flow, thus improving the overall performance of air cleaner systems.
Implementation Method 1
directing a fluid pulse at the filter media at an angle
Data Source
AI summary
A method of pulse cleaning filter media in panel, cylindrical, conical, or V-pack style filter in an opening of a tubesheet is provided. The method includes directing a fluid pulse at the filter media at an angle that is: (i) not normal to a plane of the opening of the tubesheet; and (ii) not in line with the general direction of the filtration flow through the filter media. An air cleaner is provided including a housing including a dirty air inlet, a clean air outlet, and an interior. A tubesheet is in the housing interior having a plurality of openings. In the plurality of openings of the tubesheet are mounted filters with filter media. There is a plurality of blow pipes, with each blow pipe being pointed to direct at a fluid pulse a respective one of the filters at an angle that is: (i) not normal to a plane of the opening in the tubesheet; and (ii) not in line with the general direction of filtration flow through the respective filter media.