Extractor Manifold With Push-Pull Airflow for Wide-Area Fume Capture
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Solution Overview
Problem
Current fume extraction systems are limited in their ability to effectively draw and filter airborne components over a wide area, particularly in metal working operations, as they often rely solely on suction airflow and lack the capability to efficiently remove fumes and smoke at greater distances and volumes.
Innovation Solution
The implementation of a system that combines positive airflow with suction airflow to create a region around the workspace for effective filtration, using a hood design with an annular space for radial air flow and adjustable flow rates to enhance the extraction of airborne components, allowing for greater distance and volume coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If only suction airflow is used, then the system structure is simple, but the effective extraction distance and volume are limited
Solution Approach 1:
The patent combines positive airflow (pushing) with negative airflow (suction) into a unified extraction system. The manifold integrates both airflow sources to work synergistically, creating a more effective extraction system that overcomes the volume and distance limitations of suction-only systems while adding only moderate complexity through the manifold component.
Solution Approach 2:
The patent employs pneumatic principles by introducing a positive airflow source that generates pressurized air through the manifold system. This pneumatic addition works in conjunction with the suction airflow to extend the effective extraction distance and volume without requiring proportionally higher suction power, thereby improving extraction capability with controlled system complexity.
2Length of stationary object
If suction airflow is increased to expand extraction distance, then extraction volume improves, but energy consumption increases
Solution Approach 1:
The positive airflow source performs preliminary action by pushing airborne components toward the suction inlet before the suction airflow acts on them. This pre-positioning of contaminants closer to the extraction point reduces the suction power needed to achieve the same extraction distance, thereby extending effective range while controlling energy consumption.
Solution Approach 2:
The positive airflow acts as an intermediary that facilitates the transfer of airborne components from distant locations to the suction zone. Instead of relying solely on high-power suction to reach distant contaminants, the positive airflow mediates by transporting them closer, reducing the energy burden on the suction system while extending extraction distance.
3Productivity
If positive airflow is added to the system, then extraction effectiveness improves, but device complexity increases
Solution Approach 1:
The system is segmented into distinct functional modules: the positive airflow source, the manifold with multiple outlets, and the suction system. This segmentation allows each component to be optimized independently and facilitates easier installation, maintenance, and adjustment, thereby improving extraction effectiveness while managing overall system complexity through modular architecture.
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
This approach significantly improves the capture of airborne components such as smoke, fumes, and particulate matter, enabling effective extraction at greater distances and volumes compared to conventional systems, with adjustable flow rates optimizing performance for various applications.
Implementation Method 1
a source of a positive pressure air stream and a source of a negative pressure air stream
Implementation Method 2
the negative pressure air stream to be drawn from the work area to pull airborne components away from the work area
Implementation Method 3
hood design with an annular space for radial air flow
Data Source
AI summary
An airborne component extraction system comprises a source of a positive pressure air stream and a source of a negative pressure air stream. Conduits allow the positive pressure air stream to be channeled to a work area, and the negative pressure air stream to be drawn from the work area to pull airborne components away from the work area. A manifold receives the conduits and aids in directing both air streams between the sources and the conduits. The manifold may support the conduits in the form of an arm that can be rotated while directing the air streams.