Dual Direction Vacuum Apparatus Obstruction Clearance

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Solution Overview

Problem

Variable flow venturi vacuum generators used in dirty environments face inefficiencies due to manual labor required for removing obstructions from vacuum ports, which leads to downtime and potential damage when trying to dislodge debris with pressurized air through the exhaust port.

Innovation Solution

A dual-direction vacuum apparatus with separate vacuum and purge modes, utilizing pressurized air to clear obstructions within the vacuum port without manual labor, by directing air through a dedicated purge path that does not interfere with the venturi jet, allowing for automatic detection and clearance of debris using sensors and controllers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If pressurized air is directed back through the exhaust port toward the vacuum port to dislodge debris, then obstruction clearance is achieved, but the calibration of the vacuum generator is degraded and internal mechanisms may be damaged

Engineering Contradiction:
Improveobstruction clearanceVSAvoidvacuum generator calibration and internal mechanisms
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The apparatus segments the air flow paths by providing separate vacuum and purge modes with distinct inlet ports. The purge mode uses a dedicated purge pressure inlet that directs air through a purge path separate from the vacuum port and venturi jet, allowing obstruction clearance without affecting the vacuum generation calibration or internal mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts the purge function from the exhaust path and creates a separate purge system with its own pressure inlet and flow path. This separates the obstruction clearance function from the vacuum generation function, allowing each to operate independently without interfering with the other's calibration or performance.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of manufacture

If manual labor is used to remove obstructions from the vacuum port, then debris removal is achieved, but downtime and manual labor requirements increase

Engineering Contradiction:
Improvedebris removalVSAvoiddowntime and manual labor
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The system provides self-service obstruction clearance through the automated purge mode. When obstructions are detected (either manually initiated or automatically detected by sensors), pressurized air is automatically directed through the purge path to dislodge debris from the vacuum port, eliminating the need for manual intervention and reducing downtime.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention uses pneumatic action to automate the obstruction clearance process. A purge pressure inlet delivers pressurized air through a dedicated purge path that directs airflow toward the vacuum port to dislodge obstructions, replacing manual mechanical removal with automated pneumatic action.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Productivity

If the vacuum port is designed to be straight-through for high flow rates, then vacuum performance is improved, but susceptibility to obstructions and debris increases

Engineering Contradiction:
Improvevacuum flow rate and performanceVSAvoidobstruction susceptibility
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The apparatus segments the airflow paths into distinct vacuum and purge modes. The straight-through vacuum port design is maintained for high flow rate performance, while a separate purge path is provided that can independently direct pressurized air through the vacuum port to clear obstructions without affecting the vacuum generation function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system applies preliminary anti-action by providing a preventive purge capability that can clear obstructions before they significantly impact vacuum performance. The separate purge path allows for periodic or on-demand clearing of the vacuum port, preventing obstructions from accumulating and degrading the high flow rate performance.

Inventive Principle:
Principle #9Preliminary anti-action

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

Enables efficient and automated obstruction clearance within vacuum generators, minimizing downtime and preserving internal mechanisms, while maintaining vacuum performance without manual intervention.

Implementation Method 1

pressurized air from the vacuum pressure inlet passes through a venturi jet and is directed toward the second end of the air passageway to create vacuum in the first end of the air passageway

Methodology Applied
Scientific EffectVenturi effect: Venturi Effect

Data Source

PatentUS11661957B2Dual direction vacuum apparatus having a vacuum mode and purge mode
Publication Date: 2023.05.30 NORGREN AUTOMATION SOLUTIONS LLC
  • US11661957B2 patent drawing
  • US11661957B2 patent drawing
  • US11661957B2 patent drawing

AI summary

A dual direction vacuum apparatus for creating vacuum and purging obstructions from a vacuum port of the apparatus. The apparatus provides a housing having an air passageway, wherein the air passageway has a first end and a second end. A vacuum pressure inlet is formed in the housing and is adaptable to receive pressurized air from a pressurized air source to create vacuum in the vacuum port and establish a vacuum mode. A purge pressure inlet is formed in the housing and adaptable to receive pressurized air from a pressurized air source to direct pressurized air toward the vacuum port to establish a purge mode and dislodge any obstructions from the vacuum port.