Oblique Push Hood Airflow Layout for Local Clean Zones
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Solution Overview
Problem
Existing local clean zone forming technologies face challenges in operability, space efficiency, and cost-effectiveness, particularly in manufacturing environments where enclosures hinder operations and require large-scale facilities, and existing air cleaning methods struggle with obstructions and confined spaces.
Innovation Solution
A local clean zone forming apparatus with a pair of push hoods that discharge uniform airflows obliquely, utilizing a honeycomb-shaped parallel porous body and air resistors to create a clean zone without enclosures, allowing flexible installation and operation in confined spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a clean bench method with enclosure is used to form a clean zone, then cleanliness is improved, but operability deteriorates due to small work openings and enclosure hindrances
Solution Approach 1:
The invention extracts the essential function of air cleaning from the enclosure structure. Instead of using walls and enclosures to contain clean air, the invention uses localized air blowing openings that actively generate clean air flows where needed, removing the hindering enclosure while maintaining cleanliness through active air management
Solution Approach 2:
The invention applies pneumatic principles by using air blowing openings to generate controlled air flows that create clean zones. The air flows from multiple openings work together to establish a clean environment through fluid dynamics rather than physical barriers, improving operability while maintaining cleanliness
2Object-affected harmful factors
If a clean room method is used to clean the entire work room, then cleanliness is improved, but facility size and installation space increase
Solution Approach 1:
The invention applies local quality by creating clean zones only in specific areas where work is performed, rather than cleaning the entire room. Multiple localized air blowing openings are strategically positioned to generate clean air exactly where needed, reducing the space required for clean environments while maintaining high cleanliness standards in operational areas
Solution Approach 2:
The invention segments the clean zone creation into multiple independent air blowing openings distributed throughout the work area. Each opening contributes to the overall clean environment, allowing the system to cover necessary areas with smaller, more compact units rather than requiring a large-scale clean room infrastructure
3Object-affected harmful factors
If push hoods are arranged with blowing opening surfaces directly opposite each other, then clean zone formation is improved, but adaptability deteriorates due to difficulty in installation with obstructions and in confined spaces
Solution Approach 1:
The invention applies asymmetry by allowing air blowing openings to be positioned at various orientations and locations rather than requiring direct opposition. The openings can be arranged asymmetrically to accommodate obstructions and fit confined spaces, maintaining clean zone formation effectiveness while significantly improving installation flexibility and adaptability to different work environments
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 apparatus effectively forms a clean zone with high cleanliness and operability, reducing installation space and maintenance costs by allowing airflow to collide obliquely, accommodating obstructions and narrow spaces, and enabling flexible placement and movement.
Implementation Method 1
a pair of push hoods having an alignment mechanism for forming uniform airflow installed inside an air blowing surface are disposed so that the uniform airflows discharged from the push hoods
Implementation Method 2
the uniform airflows discharged from the push hoods are opposite to and collide with each other
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
Provided is a local clean zone forming apparatus which has an excellent operability and can provide an excellent clean air space without restricting the installation location or the purpose of an operation. In the local clean zone forming apparatus, a pair of push hoods having air blowing surfaces between which an airflow alignment mechanism is formed to form uniform airflows, are disposed so that the uniform airflows discharged from the push hoods are opposite to and collide with each other in a positional relationship wherein the air blowing surfaces are parallel to each other, and the centers of the air blowing surfaces are not directly opposite to each other; and the uniform airflows are obliquely discharged at an angle with respect to the air blowing surfaces.