Push Hood Airflow Layout for Wider Local Clean Workspace
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Solution Overview
Problem
Conventional local air cleaning apparatuses have limited workspaces, making it difficult for workers to perform tasks that require a wider clean area, especially in precision instrument assembly and manufacturing processes, and are not easily adaptable to varying equipment sizes.
Innovation Solution
A local air cleaning apparatus with a pair of push hoods and guides that oppose each other, creating a wider clean air space by colliding uniform air flows from their air flow opening faces, forming a region with higher cleanliness between the guides and inside the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a clean bench with an enclosure is used to maintain cleanliness, then air cleanliness is improved, but the workspace area becomes narrow and workability deteriorates
Solution Approach 1:
The invention divides the clean air generation into multiple independent push hoods (first and second push hoods) positioned at opposite sides. Each push hood independently generates clean air flow that pushes contaminants toward the center, creating a clean workspace without requiring a full enclosure. This segmentation allows the workspace to remain open and accessible while maintaining cleanliness through localized air flow control.
2Ease of operation
If the entire production line is arranged in the clean room to enable article transfer, then workability is improved, but the equipment size and space requirement increase
Solution Approach 1:
The invention applies clean air flow locally at specific workstations rather than creating a large clean room environment. Each push hood generates clean air flow tailored to its specific workspace, allowing multiple workstations to be arranged flexibly without requiring the entire production line to be housed in a clean room. This local approach maintains workability while significantly reducing space requirements.
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 creates a wider clean air space with higher cleanliness, reducing power consumption and noise, and facilitating easier layout changes and maintenance, while maintaining the cleanliness of the work area.
Implementation Method 1
the cleaned uniform air flows blown out from the respective air flow opening faces collide with each other in the open region to flow out of the open region so as to cause the insides of the guides and the inside of the open region to have higher cleanliness than other regions
Data Source
AI summary
A local air cleaning apparatus (1) is provided with push hoods (2, 3) having an air flow opening face (23) for blowing out a cleaned uniform air flow and a pair of guides (4, 5) provided on sides of the push hoods (2, 3) having the air flow opening faces (23), the guides (4, 5) extending from the sides thereof having the air flow opening faces (23) toward downstream sides of the uniform air flows to form opening faces (41, 51) at downstream-side end portions of the guides. The push hoods (2, 3) are arranged such that the respective air flow opening faces (23) are opposed to each other. The opening faces (41, 51) of the guides (4, 5), are spaced apart from and opposed to each other to form an open region between the opening faces (41, 51) of the respective guides (4, 5). The cleaned uniform air flows blown out from the air flow opening faces (23) collide with each other in the open region to flow out of the open region so as to allow the insides of the guides (4, 5) and the inside of the open region to have higher cleanliness than other regions.