Push Hood Airflow Guide for Open Clean Air Workspaces
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Solution Overview
Problem
Conventional local air cleaning apparatuses have limitations in providing a larger clean air space and often have complex structures, which can hinder workability and flexibility, especially in precision instrument assembly and production line settings.
Innovation Solution
A local air cleaning apparatus with a push hood and a guide that directs the cleaned air flow to collide with an air collision face, creating a larger clean air space with higher cleanliness, featuring a simpler structure and adjustable dimensions to accommodate various work requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional clean bench with an enclosure is used to maintain cleanliness, then air cleanliness is improved, but the work space becomes narrow and workability deteriorates
Solution Approach 1:
The invention divides the clean space creation into two functional parts: a push hood that generates cleaned air flow and a guide that directs it to collide with an air collision face. This segmentation allows the work space to remain open and accessible while still achieving high cleanliness in the specific work area through controlled air flow collision, rather than enclosing the entire workspace.
Solution Approach 2:
The invention applies local quality by creating a localized clean air space through air flow collision rather than providing uniform cleanliness throughout an enclosed space. The guide structure directs cleaned air to a specific collision zone, creating high cleanliness only where needed for the work area, while the rest of the space remains accessible and open for worker movement and equipment placement.
2Reliability
If a local air cleaning apparatus with push hoods arranged opposite to each other is used to create a clean air space, then cleanliness is improved, but the structure becomes complex and device complexity increases
Solution Approach 1:
The invention extracts the air collision face from the push hood structure itself and makes it a separate, independent element. Instead of having the push hood contain both the air generation and collision functions, the air collision face can be a separate wall, partition, or surface that the guided air flow collides with. This extraction simplifies the push hood design while maintaining the clean air space creation function.
Solution Approach 2:
The guide structure serves multiple functions: it directs the cleaned air flow from the push hood, defines the path of the air collision, and helps establish the boundaries of the clean air space. By making the guide multi-functional, the invention reduces the need for additional separate components, thereby simplifying the overall device structure while maintaining effectiveness.
3Ease of operation
If a larger clean air space is desired for various work procedures, then workability is improved, but the equipment size increases
Solution Approach 1:
The invention creates a dynamic clean air space that can be adjusted by modifying the guide structure's position, shape, or dimensions. Rather than a fixed enclosed space, the clean air zone can be dynamically configured to match different work requirements. The guide can be designed with adjustable elements or modular components that allow the clean space volume to be changed without replacing the entire equipment.
Solution Approach 2:
The invention allows for parameter changes in the clean air space by adjusting the guide's dimensions, the push hood's air flow rate, or the distance between the guide and air collision face. These parameter adjustments enable the same basic apparatus to create clean spaces of varying sizes, accommodating different work procedures without requiring proportionally larger equipment.
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 provides a larger clean air space with improved workability and flexibility, reducing power consumption and noise levels while maintaining high cleanliness within the work area, allowing for efficient cleaning and easier layout changes.
Implementation Method 1
a push hood (2) comprising an air flow opening face (23) for blowing out a cleaned uniform air flow
Implementation Method 2
the cleaned uniform air flow blown out from the air flow opening face collides with the air collision face
Data Source
AI summary
A local air cleaning apparatus (1) is provided with a push hood (2) having an air flow opening face (23) for blowing out a cleaned uniform air flow and a guide (3) provided on a side of the push hood (2) having the air flow opening face (23), the guide (3) extending from the side thereof having the air flow opening face (23) toward a downstream side of the uniform air flow to form an opening face (31) at a downstream end portion thereof. The push hood (2) is arranged such that the uniform air flow blown out from the air flow opening face (23) passes through the inside of the guide (3) and then collides with an air collision face (W) on a downstream side of the opening face (31). The opening face (31) of the guide (3) is spaced apart from and opposed to the air collision face (W) to form an open region between the opening face (3) and the air collision face (W). The cleaned uniform air flow blown out from the air flow opening face (23) collides with the air collision face (W) and flows out of the opening region, thereby allowing the inside of the guide (3) and the inside of the open region to have higher cleanliness than other regions.