净化车间 /Purification workshop
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无尘净化车间按气流方式分类

 

1.层流式

层流式:层流式空气气流运动成一均匀之直线型,空气由覆盖率100%之过滤器进入室内,并由高架地板或两侧隔板回风,此型式适用于洁净室等级需定较高之环境使用,一般其洁净室等级为CLASS1-100。其型式可分为二种:1)水平层流式;2)垂直层流式。

层流式

 

水平层流式:水平式空气自过滤器单方向吹出,由对边墙壁之回风系统回风,尘埃随风向排出室外,一般在下流侧污染较严重。

 

水平层流式

 

垂直层流式:房间天花板完全以ULPA过滤器覆盖,空气由上往下吹,可得较高之洁净度,在制程中或工作人员所产生的尘埃可快速排出室外而不会影响其他工作区域。

 

垂直层流式

 

乱流式:空气由空调箱经风管与洁净室内之空气过滤器(HEPA)进入洁净室,并由洁净室两侧隔间墙板或高架地板回风。气流非直线型运动而呈不规则之乱流或涡流状态。此型式适用于洁净室等级。

空气洁净度等级
Air cleanliness level
100级
Class 100
1000级
Class 1000
气流
组织
方式
Airflow organization
气流类型
垂直层流
Vertical laminar flow
水平层流
Horizontal laminar flow
乱  流
Turbulence
送风主要方式
Main mode of air supply
1、顶棚满布高效空气过滤器送风(高效空气
过滤器占顶棚面积不小于80%)
2、侧布高效空气过滤器,顶棚设阻尼层送风
3、全孔板顶棚送风
1, the ceiling is covered with high-efficiency air filter air supply (high efficiency air
The filter covers no less than 80% of the ceiling area)
2, side cloth high efficiency air filter, the ceiling is provided with damping layer air supply
3, full hole plate ceiling air supply
1、送风墙满布高效空气过滤器水平送风
2、送风墙局部布置高效空气过滤器水平送风
(高效空气过滤器占送风墙面积不小于40%)
1, the air supply wall is covered with high efficiency air filter horizontal air supply
2, the air supply wall is partially arranged with high-efficiency air filter horizontal air supply (high-efficiency air filter accounts for not less than 40% of the air wall area)
1、孔板顶棚送风
2、条形布置高效空气过滤器顶棚送风
3、间隔布置带扩散板高效空气过滤器顶棚送风
1, the hole plate ceiling air supply
2, strip layout high efficiency air filter ceiling air supply
3, interval arrangement with diffuser high efficiency air filter ceiling air supply
回风主要方式
Main way of returning to the wind
1、格栅地面回风
1)满布
2)均匀局部布置
1, the grille floor return air
1) Full cloth
2) Uniform local arrangement
1、回风墙满布回风口
2、回风墙局部布置回风口
1, the return air wall is full of air return
2. The return air wall is partially arranged at the return air outlet.
1、相对两侧墙下部均匀布置回风口
2、洁净室面积较大时,可采取地面均匀布置回风口
1. Evenly arrange the return air inlets on the lower part of the opposite sides of the wall
2. When the clean room area is large, the air return can be evenly arranged on the ground.
送风量
Air supply
气流流经室内断面风速(米/秒)
Airflow through the indoor section wind speed (m / s)
不小于0.25
Not less than 0.25
不小于0.35
Not less than 0.35
——
换气次数(次/时)
Number of ventilations (times/hours)
—— —— 不小于50
Not less than 50