Motorized Valve Washing Filter for Debris-Resistant Bleed Flow
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Solution Overview
Problem
Existing motorized valves with bleed conduits are prone to clogging and pressure drops due to debris accumulation, as the filters are typically located downstream of the inlet and outside the flow field, leading to maintenance issues and reduced performance.
Innovation Solution
A washing filter with filter media extending into the valve duct from the conduit inlet, providing a clean flow and protecting the motor from debris, configured with a 5 micrometer filter rating and 1.5 square inches of effective filter area, is integrated into the valve assembly, allowing for efficient particle removal and reduced maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter is located downstream of the inlet and outside the flow field, then the filter is easier to install and maintain, but debris accumulates on the filter causing clogging and pressure drops
Solution Approach 1:
The filter is inverted from its conventional position downstream of the inlet to upstream, extending into the flow field. This inversion allows the filter to be washed by the flow, preventing debris accumulation and clogging, thereby maintaining flow continuity while still being accessible for maintenance
Solution Approach 2:
The filter is positioned to be self-cleaning by the flow itself. The flow field washes the filter surface, removing accumulated debris automatically during operation, eliminating the need for external cleaning mechanisms and maintaining reliability without additional complexity
2Reliability
If the filter is placed within the flow field, then particle removal efficiency increases, but the filter is more exposed to debris and requires more frequent maintenance
Solution Approach 1:
The filter positioned in the flow field is continuously washed by the flowing fluid, which removes accumulated particles from the filter surface. This self-cleaning action maintains high particle removal efficiency while reducing the frequency of manual maintenance interventions
Solution Approach 2:
The flow provides periodic washing action on the filter surface, continuously removing debris during operation. This periodic cleaning action extends the time between maintenance intervals while maintaining efficient particle removal
3Device complexity
If a jacketless washing filter with 5 micrometer rating is used, then compact design and efficient filtration are achieved, but the filter area is limited
Solution Approach 1:
The filter is configured as a corrugated or cylindrical structure, adding dimensional complexity to the filter geometry. This dimensional change increases the effective filter surface area within the constrained space, achieving both compact design and sufficient filtration capacity
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 effectively prevents debris buildup, maintains system performance, and reduces maintenance needs by locating the filter within the flow field, ensuring continuous operation and minimizing pressure drops.
Implementation Method 1
a washing filter that includes filter media, wherein the filter media extends into the valve duct to remove particles and provide a clean flow to the first conduit
Data Source
Figure 1
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Figure 4
AI summary
Disclosed is a valve assembly, having: a valve duct (110) having an upstream end, a downstream end and a duct wall extending from the upstream end to the downstream end; a first conduit (130) extending from a first end at the valve duct (110) to a second end spaced apart from the first end, the first conduit (130) terminating at a valve assembly component; and a washing filter that includes filer media, wherein the filter media extends into the valve duct (110) to remove particles and provide a clean flow to the first conduit (130).