Particulate Filter With Electric Field Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Particulate filters face inefficiencies due to accumulated particulates, requiring frequent manual cleaning or replacement, which is labor-intensive, costly, and challenging in space-constrained environments like spacecraft.
Innovation Solution
A particulate filter with a porous substrate and conductors that generate an electric field to repel and remove particulates, reducing the need for manual intervention and enabling efficient, frequent cleaning without replacing the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cleaning or replacement of particulate filters is performed, then particulate removal efficiency is maintained, but labor cost and operational complexity increase
Solution Approach 1:
The filter substrate performs self-cleaning by utilizing the kinetic energy of the filtered gas flow to shake and dislodge accumulated particulates. The flexible support structure allows the filtering surface to move autonomously in response to flow-induced vibrations, eliminating the need for external cleaning mechanisms or manual intervention while maintaining continuous particulate removal efficiency
Solution Approach 2:
The filter substrate transitions from a static structure to a dynamic one by incorporating flexible support that enables movement. This dynamic behavior allows the filtering surface to adapt to flow conditions and actively shake off particulates, converting the constant gas flow into a self-cleaning mechanism that reduces operational complexity
2Reliability
If frequent filter replacement is implemented, then particulate removal efficiency is maintained, but storage space and logistical complexity increase
Solution Approach 1:
The self-cleaning mechanism extends filter lifespan by continuously removing particulate accumulation that would otherwise require replacement. The flexible support structure enables autonomous cleaning cycles that restore filtering efficiency without removing the filter from service, eliminating the need for multiple replacement filters in storage
Solution Approach 2:
Instead of discarding the entire filter assembly when particulates accumulate, the system recovers filtering capacity by shaking off and removing only the particulate layer. This selective recovery approach allows the expensive filter substrate to be reused multiple times, reducing the quantity of filters that need to be stored and managed
3Device complexity
If mechanical filtration alone is used, then simple structure is maintained, but particulate accumulation reduces efficiency over time
Solution Approach 1:
The invention merges mechanical filtration with self-cleaning vibration mechanisms into a single integrated system. The flexible support structure serves dual purposes: providing structural support for the filtering surface and enabling shaking motions that dislodge particulates. This combination maintains structural simplicity while adding the functional capability to prevent efficiency degradation
Solution Approach 2:
The system transitions from static mechanical filtration to dynamic filtration with active particulate removal. The flexible support allows the filtering surface to move and vibrate in response to gas flow, creating a dynamic cleaning action that prevents particulate buildup and maintains high efficiency throughout the filter's operational life without adding complex external mechanisms
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 electric field effectively cleans the filter substrate, maintaining efficiency and reducing storage and logistical challenges associated with replacing filters in space-constrained environments.
Implementation Method 1
The plurality of conductors are configured to generate an electric field on at least one of the first surface or the second surface of the porous filter substrate in response to the plurality of input nodes receiving the voltage signal from the input signal source
Implementation Method 2
The plurality of conductors are configured to generate an electric field on at least one of the first surface or the second surface of the porous filter substrate... removing, using the electric field, particulates from the at least one of the first surface or the second surface
Data Source
AI summary
In an example, a particulate filter includes a porous filter substrate including a first surface and a second surface. The porous filter substrate is configured to filter gas flowing through the porous filter substrate between the first surface and the second surface. A plurality of conductors are coupled to the porous filter substrate. The plurality of conductors are approximately parallel to each other along the porous filter substrate. The particulate filter also includes a plurality of input nodes in signal communication with the plurality of conductors and configured to receive a voltage signal from an input signal source. The plurality of conductors are configured to generate an electric field on at least one of the first surface or the second surface of the porous filter substrate in response to the plurality of input nodes receiving the voltage signal from the input signal source.