Air purification engineering
Air Air purification engineering
      For the concept of clean room, people handle and purify the air within a certain range through various measures and methods, so that the indoor air reaches certain cleanliness. We usually call such room as a clean room, which can also be called decontamination chamber, dust free room, GMP plant, etc.
The clean room can generally be divided into two kinds, wherein one is industrial clean room, which is mainly applied to the fields such as space technology, precise instrument and meter, electronic products, spraying and printing, etc., and its main purpose is to control the precision of particles; The other is biological clean room, which is mainly applied to the fields such as food, beverage, pharmacy, medical health, experiment on microbiology, etc. and its main purpose is to control the microorganism adsorbed on the particles.

Air purification principle

      Airflow→ air conditioner → primary air treatment→ fan air supply→ intermediate air treatment→ purification pipeline→ efficient air supply outlet→ clean room→ dust (microorganism) taking away→ return air channel→ return air and fresh air (airflow). The indoor air can be clean by circulating the process above.

      Cleanliness class of airborne particulates in the clean room and clean area

ISO air cleaning
maximum concentration limit not less than particle size in the table (P/m-air)
209E Cleanliness class of United States federal 209E
0.1um
0.2um
0.3um
0.5um
1um
5um
ISO Class1
10
2
 
 
 
 
 
ISO Class2
100
24
10
4
 
 
 
ISO Class3
1000
237
102
35
8
 
1
ISO Class4
10000
2370
1020
352
83
 
10
ISO Class5
100000
23700
10200
3520
832
29
100
ISO Class6
1000000
237000
102000
35200
8320
293
1000
ISO Class7
 
 
 
352000
83200
2930
10000
ISO Class8
 
 
 
3520000
832000
29300
100000
ISO Class9
 
 
 
35200000
8320000
293000
300000