Top-Down Vacuum System for Caustic Particulate Filtration

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Solution Overview

Problem

Existing vacuum systems for removing caustic particulate matter are inefficient due to non-resistant materials and particulate matter accumulation on sidewalls, increasing maintenance costs and exposure risks for personnel.

Innovation Solution

A novel vacuum system with a top-down airflow design, featuring upper and lower filters made of corrosion-resistant materials, and a vacuum pump with an outlet, allowing for effective particulate matter removal and reducing the need for manual cleaning by minimizing the vertical space above the filters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a bottom-up airflow design with bag filter at the bottom is used, then the system structure is simple, but particulate matter accumulates on sidewalls requiring manual cleaning

Engineering Contradiction:

Improvesystem structureVSAvoidmanual cleaning requirement

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The patent inverts the conventional bottom-up airflow design by implementing a top-down airflow system where the vacuum motor is positioned at the top and the bag filter is positioned at the bottom, reversing the traditional configuration to eliminate particulate accumulation on sidewalls

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the vertical dimension of airflow direction from bottom-up to top-down, fundamentally altering the flow path geometry to prevent particulate matter from contacting sidewalls during the filtration process

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If non-corrosion-resistant materials are used for system components, then manufacturing costs are reduced, but the system cannot handle caustic particulate matter

Engineering Contradiction:

Improvemanufacturing costVSAvoidcaustic particulate matter resistance

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent employs composite material construction with stainless steel components (such as the vacuum motor housing and structural elements) that provide both mechanical strength and resistance to caustic particulate matter, combining durability with chemical resistance

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent changes the material parameter from standard carbon steel to stainless steel, fundamentally altering the chemical composition and properties of system components to achieve resistance against caustic particulate matter while maintaining manufacturability

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If the bag filter is positioned at the bottom, then component placement is simplified, but maintenance personnel are exposed to harmful particulate matter during cleaning

Engineering Contradiction:

Improvecomponent placementVSAvoidpersonnel exposure to particulate matter

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the vacuum motor and exhaust function from the bottom position and relocates it to the top of the system, separating the filtration function (bag filter) from the exhaust function, which eliminates the need for personnel to access harmful particulate zones during maintenance

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a sealed exhaust system with the vacuum motor positioned at the top, creating an intermediary containment structure that prevents contact between maintenance personnel and harmful particulate matter during filter replacement and system maintenance operations

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 system efficiently removes caustic particulate matter, reducing maintenance costs and exposure risks by ensuring cleaner air output and facilitating quick filter replacement with minimal manual intervention.

Implementation Method 1

a vacuum pump positioned vertically below the lower filter... wherein an incoming air stream is adapted to flow downwardly through the at least one incoming air inlet, then through the upper filter, then through the lower filter and then out of the outlet of the vacuum pump

Methodology Applied

Scientific EffectVacuum suction: Pressure Gradient

Implementation Method 2

an upper filter, a lower filter positioned vertically below the upper filter... wherein an incoming air stream is adapted to flow downwardly through the at least one incoming air inlet, then through the upper filter, then through the lower filter

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS11266940B2Vacuum system for removing caustic particulate matter from various environments

Publication Date: 2022.03.08 GLOBALFOUNDRIES US INC

AI summary

One illustrative system disclosed herein includes an upper filter, a lower filter positioned vertically below the upper filter, at least one incoming air inlet positioned vertically above the upper filter, and a vacuum pump positioned vertically below the lower filter, the vacuum pump including an outlet, wherein an incoming air stream is adapted to flow downwardly through the at least one incoming air inlet, then through the upper filter, then through the lower filter and then out of the outlet of the vacuum pump where it exits as a cleaned air stream.