Motorized Valve Bleed Conduit Filtration Against Debris Clogging

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Solution Overview

Problem

Existing motorized valves with bleed conduits are prone to clogging due to exposure to debris, which can lead to maintenance issues and pressure drops.

Innovation Solution

A motorized valve assembly with a washing filter that extends from the bleed conduit inlet into the valve duct, utilizing filter media to remove particles and ensure a clean flow, thereby protecting the motor and reducing maintenance needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the motor is exposed to the flow to control the valve, then the valve can be actuated, but debris in the flow can clog the motor and reduce reliability

Engineering Contradiction:

Improvevalve actuationVSAvoidmotor operation

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The valve assembly is divided into separate functional zones: a flow path for the main fluid and a bleed conduit with motor assembly for valve actuation. The motor and piston assembly are segmented from the main flow path, allowing independent operation and protection from debris contamination.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A bleed conduit acts as an intermediary mechanism between the motor and the valve closure. The conduit carries a portion of the flow to drive the piston assembly, which then actuates the valve closure, allowing the motor to control the valve without direct exposure to the main flow path.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a filter is placed in the bleed conduit to protect the motor, then debris is removed, but pressure drops occur and flow is restricted

Engineering Contradiction:

Improvemotor protectionVSAvoidflow pressure

Core Design Contradiction:

ReliabilityVSStress or pressure

Solution Approach 1:

Instead of filtering the entire flow, only a portion of the flow is diverted through the bleed conduit to the motor assembly. This partial action allows the motor to be protected from debris while maintaining the majority of the flow pressure and volume in the main path, minimizing pressure drops.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The filter is placed locally in the bleed conduit rather than in the main flow path. This localized filtering approach protects the motor from debris while having minimal impact on the overall system pressure and flow characteristics.

Inventive Principle:

Principle #3Local quality

3Reliability

If the filter is positioned downstream of the motor, then the motor is protected, but the filter becomes clogged and requires frequent maintenance

Engineering Contradiction:

Improvemotor protectionVSAvoidfilter maintenance

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The filter is positioned upstream in the bleed conduit, performing preliminary filtration before the flow reaches the motor assembly. This preliminary action removes debris before it can contaminate the motor, preventing clogging and reducing maintenance requirements.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The filter is extracted from the main flow path and placed specifically in the bleed conduit. This extraction allows the filter to serve the protective function for the motor while being easily accessible for maintenance and replacement without affecting the main flow system.

Inventive Principle:

Principle #2Taking out (Extraction)

4Extent of automation

If the bleed conduit carries flow to the motor, then the valve can be controlled, but debris in the flow can cause clogging and maintenance issues

Engineering Contradiction:

Improvevalve controlVSAvoidflow cleanliness

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The bleed conduit with integrated filter serves as an intermediary system that carries a portion of the flow to the motor assembly for automated valve control. The filter within this intermediary path removes debris, ensuring clean flow to the motor while maintaining automated operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 implementation of the washing filter effectively prevents debris from entering the valve assembly, maintaining the integrity of the motor and reducing maintenance requirements, while ensuring consistent flow and pressure.

Implementation Method 1

a washing filter that includes filer media, wherein the filter media extends into the valve duct to remove particles and provide a clean flow to the first conduit

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS12268981B2Motorized valve with washing filter extending from a bleed conduit inlet into valve duct

Publication Date: 2025.04.08 HAMILTON SUNDSTRAND CORP

AI summary

Disclosed is a valve assembly, having: a valve duct having an upstream end, a downstream end and a duct wall extending from the upstream end to the downstream end; a first conduit extending from a first end at the valve duct to a second end spaced apart from the first end, the first conduit terminating at a valve assembly component; and a washing filter that includes filer media, wherein the filter media extends into the valve duct to remove particles and provide a clean flow to the first conduit.