Extractor with segmented positive pressure airflow system
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Solution Overview
Problem
Current fume extraction systems lack flexibility and effectiveness in drawing fumes and smoke from a wide range of workspaces, particularly in confined areas, and often rely solely on negative pressure zones, which limits their versatility and performance.
Innovation Solution
The system incorporates a combination of negative and positive pressure zones, utilizing a negative pressure conduit and positive pressure gas stream manifolds with adjustable motors and fan systems, allowing for controlled airflow and enhanced extraction capabilities through a segmented positive pressure system that can be adapted for various workspace configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only negative pressure zones are used for fume extraction, then the system structure is simple, but the capture area and extraction efficiency are limited
Solution Approach 1:
The system divides the extraction mechanism into segmented positive pressure assemblies distributed around the negative pressure conduit, allowing independent control of each assembly to enhance overall extraction efficiency while maintaining manageable system complexity
Solution Approach 2:
The system combines both positive pressure and negative pressure zones to work synergistically, where positive pressure assemblies push fumes toward the negative pressure conduit, significantly improving capture area and extraction efficiency compared to negative pressure alone
2Adaptability or versatility
If a fixed extraction system is used, then the system structure is stable, but the adaptability to different workspace configurations is poor
Solution Approach 1:
The system employs adjustable positive pressure assemblies with controllable airflow rates and directions, allowing dynamic adaptation to different workspace configurations and fume generation locations while maintaining a stable overall system structure
Solution Approach 2:
The positive pressure assemblies can be configured for different workspace scenarios (confined areas, open spaces, various fume locations), making the system universally applicable to multiple extraction situations without requiring complete system redesign
3Area of stationary object
If positive pressure assemblies are added to enhance extraction capability, then the capture area increases, but the system complexity increases
Solution Approach 1:
The system uses multiple segmented positive pressure assemblies positioned around the negative pressure conduit, each contributing to expanding the capture area while allowing independent optimization and control to manage system complexity
Solution Approach 2:
The positive pressure assemblies are positioned around and integrated with the negative pressure conduit, creating a nested configuration where the positive pressure zones enhance the negative pressure extraction without requiring completely separate system components
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 system's ability to capture fumes and smoke in diverse workspaces, including confined areas, by creating a positive pressure zone around a negative pressure zone, thereby increasing the capture area and extraction efficiency.
Implementation Method 1
A negative pressure conduit conveys a negative pressure gas stream from a work area, wherein a first end of the negative pressure conduit is coupled to a negative pressure gas stream source, such that the negative pressure gas stream is conveyed from the work area through a second end of the negative pressure conduit and toward the first end of the negative pressure conduit
Implementation Method 2
The positive pressure gas stream is directed through a plurality of positive pressure gas stream manifolds disposed about the negative pressure conduit at the second end of the negative pressure conduit
Data Source
AI summary
An extractor system includes a negative pressure gas stream source, a negative pressure conduit, a positive pressure gas stream source, a plurality of positive pressure gas stream manifolds, and an operator interface. The negative pressure conduit is conveys the negative pressure gas stream from a work area. A first end of the negative pressure conduit is coupled to the negative pressure gas stream source, such that the negative pressure gas stream flows from the work area through a second end of the negative pressure conduit and toward the first end of the negative pressure conduit. The positive pressure gas stream manifolds are disposed about the negative pressure conduit at the second end of the negative pressure conduit, and fluidly coupled to the positive pressure gas stream source. The positive pressure gas stream is directed through the plurality of positive pressure gas stream manifolds. The operator interface allows a user to control the positive pressure gas stream through each of the plurality of positive pressure gas stream manifolds.