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Smoke exhaust fans VR 280-46 DU

VR 280-46 №2 DU
VR 280-46 №2,5 DU
VR 280-46 №3,15 DU
VR 280-46 №4 DU
VR 280-46 №5 DU
VR 280-46 №6,3 DU
VR 280-46 №8 DU
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VR 280-46 medium-pressure centrifugal fan of single direction suction is a blade system, consisting of: impeller, spiral housing, frame (bedplate), diffuser and asynchronous motor (380V, 50Hz), of various rotation speed and power for expanding the range of aerodynamic characteristics. The impeller is “spiked”, has 32 forward curved blades. In regards to the direction of the impeller rotation, the fans can be of right and left rotation. If viewed from the inlet port and the impeller rotates clockwise – the fan is of the right rotation and, conversely, counterclockwise – of the left rotation. VR 280-46 fan has a spiral turning body, which can be installed in 6 positions (from 0° to 315°, with a range of 45°, 180° by special order). VR 280-46 fan is attached to the welded frame (bedplate), which during installation can be mounted on vibration isolators. The number and size of vibration isolators depend on the size of the fan. In regards to to the design, it is possible to manufacture the fans according to scheme 1 (the impeller is located on the motor shaft).

Designation of VR 280-46 smoke exhaust fans

Smoke exhaust fans VR 280-46 are used in the emergency smoke ventilation systems. They can have blast protection. These fans are intended for removal from a building of smoke-air mixtures caused by fire. Such fans are capable to work constantly with gases up to 400°С, if their temperature reaches 600°С no more than 120 minutes.

Operation conditions

Centrifugal fans VR 280-46 DU are used to move non-explosive smoke-air mixtures that do not contain explosives, fibrous and sticky materials, conductive dust, corrosive gases and vapors in concentrations destroying metals and insulation, with a dust content of no more than 10 mg/m3.

The fans are designed for operation in conditions of moderate climate temperate (M) (-40°C to 40°C) and tropical (T) (-10°C to 50°C) climate of the 2nd and 3rd location environmental classes in accordance with GOST 15150-69.

For the motor protection from atmospheric influences (precipitation), fans are allowed to operate in a temperate climate of the 1st location environmental class, in accordance with GOST 15150-69.

When using these fans in case of fire, their further operation is unacceptable.

Technical characteristics of VR 280-46 No.2-8 DU fans

Technical characteristics of BR 280-46 №2-6,3 DU fans

Fan
typical size
 Electric motor
Impeller rotation speed, min
-1
 Parameters in working area
Fan weight not more than,
kg
Type size
Power,
kW
Capacity, 103·m3 / hour
Total pressure, Pa t=20°C
Total pressure, Pa t=400°C
Total pressure, Pa t=600°C
VR 280-46 №2 DU АIR71В2 1,1 2811 1,15-1,91 1060-1210 460-526 353-403 33
АIR80А2 1,5 2874 1,19-2,34 1110-1300 483-565 370-433 36
АIR80В2 2,2 2871 1,19-3,06 1110-1250 483-543 370-417 37
АIR90L2 3,0 2871 1,19-3,06 1110-1250 483-543 370-414 47
VR 280-46 №2,5 DU АIR71A4 0,55 1391 1,12-2,34 430-500 187-217 143-167 38
АIR71В4 0,75 1388 1,12-2,88 430-485 187-211 143-162 38
АIR90L2 3,0 2871 2,34-3,24 1840-2000 800-870 613-667 53
АIR100S2 4,0 2901 2,34-3,96 1780-2120 813-922 623-707 60
АIR100L2 5,5 2898 2,34-5,22 1870-2160 813-939 623-720 65
VR 280-46 №3,15 DU АIR71A6 0,37 908 1,44-2,41 320-360 139-217 107-120 48
АIR71В6 0,55 900 1,44-3,35 315-365 137-159 105-122 48
АIR80А6 0,75 916 1,44-3,82 325-365 141-159 108-122 51
АIR80А4 1,1 1419 2,3-3,06 780-870 339-378 260-290 51
АIR80В4 1,5 1413 2,3-3,78 770-890 335-387 257-297 53
АIR90L4 2,2 1424 2,3-5,33 785-910 341-396 262-303 63
VR 280-46 №4 DU АIR80В6 1,1 920 3,06-4,68 550-620 239-270 183-207 70
АIR90L6 1,5 936 3,1-5,65 570-660 248-287 190-220 80
АIR100L6 2,2 949 3,13-7,56 585-670 254-291 195-223 92
АIR112М6 3,0 953 3,17-8,14 590-670 257-291 197-223 106
АIR100L4 4,0 1430 4,75-6,84 1330-1460 578-635 443-487 92
АIR112М4 5,5 1445 4,79-8,64 1360-1570 591-683 453-523 106
АIR132S4 7,5 1455 4,82-10,8 1380-1600 600-696 460-533 130
VR 280-46 №5 DU АIR132S6 5,5 970 6,0-11,5 950-1120 410-485 315-370 172
АIR132М6 7,5 970 6,0-14,5 950-1080 410-470 315-360 185
АIR160S4 15 1460 9,0-14,5 2200-2500 950-1085 730-830 221
АIR160M4 18,5 1460 9,0-17,0 2200-2550 950-1110 730-850 240
АIR180S4 22 1460 9,0-20,0 2200-2500 950-1085 730-830 262
VR 280-46 №6,3 DU АIR132M8 5,5 750 9,2-13,0 890-980 385-425 295-325 178
АIR160S8 7,5 750 9,2-17,0 890-1040 385-450 295-345 226
АIR160M8 11 750 9,2-23,0 890-1020 385-440 295-340 256
АIR160S6 11 1000 12,3-15,0 1580-1700 685-740 525-565 226
АIR160M6 15 1000 12,3-19,5 1580-1800 685-780 525-600 256
АIR180M6 18,5 1000 12,3-24,0 1580-1820 685-790 525-605 283
АIR200M6 22 1000 12,3-28,0 1580-1800 685-780 525-600 336

Technical characteristics of  VR 280-46 №8 DU fan

Fan typical size
 Electric motor
Impeller rotation speed, min
-1
 Parameters in working area
Fan weight not more than,
kg
Type size
Power,
kW
 Capacity, 103·m3 /hour
Total pressure, Pa t=20°C
Total pressure, Pa t=400°C
Total pressure, Pa t=600°C
VR 280-46 №8 DU АIR180M8 15 750 19,0-22,5 1430-1530 620-665 475-510 418
АIR200M8 18,5 750 19,0-27,5 1430-1620 620-700 475-540 464
АIR200L8 22 750 19,0-32,0 1430-1640 620-715 475-545 488
АIR225M8 30 750 19,0-41,0 1430-1630 620-710 475-545 542
АIR225M6 37 1000 24,5-31,0 2600-2750 1130-1195 865-915 542
АIR250S6 45 1000 24,5-37,0 2600-2850 1130-1240 865-950 625

 

Overall dimensions of centrifugal fans VR 280-46 DU

Overall and mounting dimensions of the fans VR 280-46 DU, option 1

Fan
No.
 Dimension , mm
А А1 А2 А3 А4 а1 а2 Lmax l h L1 L2
2 128 100 100 165 165 140 140 520 123 260 25 280
2,5 162 100 100 210 210 180 180 600 140 320 45 320
3,15 205 200 200 270 270 240 240 600 163 410 93 400
4 260 200 200 310 310 285 285 680 193 510 110 500
5 325 300 300 380 380 345 345 1030 252 650 93 600
6,3 410 400 400 475 475 435 435 1190 314 820 113 700
8 520 600 600 600 600 560 560 1470 378 905 212 1050
Fan
No.
 Dimension , mm N n n1 n2
L3 D D1 d d1 d2 t1 T2
2 200 203 227 7 7 10 100 100 8 8 1 1
2,5 256 254 280 7 7 10 100 100 8 8 1 1
3,15 220 318 350 7 7 10 100 100 8 12 2 2
4 290 403 430 7 7 10 100 100 8 12 2 2
5 410 510 530 7 7 10 100 100 16 16 3 3
6,3 510 640 660 7 7 12 100 100 16 20 4 4
8 606 820 850 10 10 15 150 150 16 16 4 4

Overall and mounting dimensions of fans VR 280-46 DU, option 5


Overall and mounting dimensions of fans VR 280-46 DU, option 5

Fan No. Dimensions, mm
А А1 А2 а1 а2 Lmax> l h  L1
8 520 600 600 560 560 1300 385 1025  315
10 650 750 750 700 700 1486 452 1212  377
12,5 813 930 930 875 875 1705 533 1350  300
Fan No. Dimensions, mm
L2 L3 L4 L5 L6 D D1 d1  N  n
8 590 1075 485 585 880 820 850 10 16  6
10 703 1155 450 962 708 1006 1040 10 16 20
12,5 662 1352 615 1240 735 1270 1310 12 24 24

Overall dimensions of the fans  VR 280-46 DU option-1

Fan No. Dimension , mm
R135°, L135° R270°, L270° R315°, L315°
B b H B b H B b H
2 432 166 191 330 178 154 432 166 142
2,5 532 208 240 407 224 193 532 208 177
3,15 664 262 301 507 282 243 664 262 223
4 824 330 380 633 355 305 824 330 280
5 1035 417 479 795 448 386 1035 417 355
6,3 1286 526 605 985 564 487 1286 526 447
8 1635 665 765 1246 713 615 1635 665 565
Fan No. Dimension , mm
R0°, L0° R45°, L45° R90°, L90°
B b H B b H B b H
2 378 154 152 332 142 265 330 178 224
2,5 469 193 183 417 177 324 407 224 275
3,15 585 242 225 524 223 402 507 282 343
4 733 305 277 661 280 494 633 355 421
5 915 386 347 534 355447 618 795 448 527
6,3 1143 487 420 1052 447 760 985 564 656
8 1461 618 533 1336 565 973 1246 713 844

Aerodynamic characteristics of fans VR  280-46 DU

Aerodynamic characteristic of the fans VR 280-46 №2DU

Aerodynamic characteristic of the fans VR 280-46 №2,5 DU

Aerodynamic characteristic of the fans VR 280-46 №3,15 DU

Aerodynamic characteristic of the fans VR 280-46 №4DU

 

Aerodynamic characteristic of the fans VR 280-46 №5DU

Aerodynamic characteristic of the fans VR 280-46 №6,3DU

Aerodynamic characteristic of the fans VR 280-46 №8DU

Acoustic characteristics of fans  VR 280-46 DU

Fan
No.
n,
мin-1
 The value of Lpi, dB in the octave band f, Hz LpA, DBA
125 250 500 1000 2000 4000 8000
2 1330 71 75 77 84 70 67 60 86
2850 83 88 91 94 95 87 84 99
2,5 1350 76 77 78 79 74 72 70 83
2850 92 92 93 94 95 90 88 100
3,15 920 74 76 82 69 66 59 56 83
1400 79 83 85 91 78 75 68 92
4 938 83 83 85 81 78 75 68 87
1430 92 93 92 94 91 88 75 96
5 970 88 92 94 90 86 81 73 94
1460 98 102 104 100 96 91 83 104
6,3 730 89 93 95 91 87 82 74 93
975 97 101 103 99 95 90 82 110
8 735 97 101 103 99 95 90 82 103
985 104 108 110 106 102 97 89 110