Radial fans vran. Fans of corvids Fans of corvids Veza

The VRAN trademark includes radial-type fans, which contain wheels with backward-curved blades in their design. As a rule, they have high efficiency, and during operation there is no discomfort from the noise of their motor. The VRAN® trademark was first registered in 2008 and since then it has been considered a model of comfort and modernity. Each fan is manufactured using the latest technical developments, and the latest equipment. Reveal all the components of this product(blades, wheel discs, body walls) is performed using a laser. But the formation of parts of conical and toroidal types is carried out using controlled CNC. In this case, wheel welding is carried out using a special welding robot.

Each housing of ventilation products is made of galvanized steel using rolling technology.

Since the production of fans is carried out on high-precision equipment, serial products fully comply with the standard characteristics declared by the manufacturer. This guarantees constant high quality each fan. Trademark VRAN® manufactures its products in 16 standard sizes, providing the most wide choose device productivity, which is in the range of 300-120,000 m3/h, and the pressure indicator is about 2600 Pa.

As a rule, fans from VRAN are used in those systems where the operating technology requires high efficiency, low noise levels, or the installation of several fans is provided that will operate in parallel to each other. Such products have high technical parameters and can completely replace well-known series of fans. domestic production(VTs 4-70, VR 80-75, VR 86-77). It is in comparison with them that VRAN products have whole line advantages:

  • There are several classes of wheel design, which depend on the size of the peripheral speed. It is the wheels that serve as the basis for the reliable operation of the fan mechanism throughout its entire lifespan. All calculations of impellers using the finite element method are fully consistent with experimental data;
  • when choosing motors, the manufacturer optimized power reserves, which ultimately allows the use of designs with low installed power, which is especially important for small fans;
  • It is envisaged to use fans in all rooms, which are made according to the first design scheme. Each of them contains frequency converters, which allows you to accurately adjust the operating mode of the device during commissioning tests, as well as during further operation of the fan. A method for selecting a motor according to optimal sizes, which is capable of working with a frequency converter and changing the frequency range of the current used;
  • high aerodynamic performance of serial products is ensured due to the simple design of the wheel, as well as the seal that is located between the wheel and the pipe when used in the design quality technology assemblies;
  • the shape of the volute casing has been slightly changed, resulting in an average speed air flow is reduced in the outlet section of the device, while pressure losses in the adjacent ventilation network are also reduced.

The main purpose of VRAN fans

Fans can be installed in ventilation systems standard type, as well as in the air conditioning system and air heating industrial or residential buildings. So that while moving for two hours gas-air mixtures, the temperature of which is in the range of 400-600 °C, could not harm the fan; it is manufactured using special versions of the VRAN®-DU type.

Fans come in the following types of designs:

  • general industrial ones, which the manufacturer, as a rule, marks with the “H” sign;
  • heat-resistant, which are marked as “F”;
  • anti-corrosion (K1), which can prevent the formation of corrosion and rust;
  • corrosion-heat-resistant (K1Zh) - such fans combine two types of mechanisms and their properties;
  • explosion-proof (type “B” marking) - products are made according to only the first design diagram;
  • heat-resistant, the mechanism of which is protected from explosions (EP) - the design is similar to the previous type of fans;
  • fans that have a protective mechanism against explosion and corrosion (VK1; VK3);
  • explosion-proof, corrosion-heat-resistant (VK1Zh);
  • fans are resistant to seismic activity, which can be easily combined with other types of designs listed above.

    Fan mechanism from inside

    In its design, each fan has an impeller that rotates both clockwise and counterclockwise. The wheel blades have a special shape and are curved slightly backwards. The spiral body of the device can also rotate. Fan mechanisms are manufactured according to both the first and fifth design schemes in accordance with the accepted standards of GOST 5976.

Fans made according to the first design scheme are directly connected to the engine and come in two modifications, such as VRAN6 and VRAN9. They differ in the number of blades of their impeller.

Fans that belong to the fifth design scheme contain a belt drive type in their design. Such products come in only one modification, VRAN9. In contrast, VRAN9, which belongs to the first design scheme, is equipped with motors, thanks to which it is possible to control the rotation speed.
For devices climatic version types U1, UHL1, T1 the design of the mechanism provides additional protection from atmospheric precipitation, which is equipped with the drive and exhaust part of the fan.

Fans that are used on large industrial enterprises, have a noise-insulating casing, which can significantly reduce the noise level of the device to a value of 12 dB. In this case, the overall sound pressure level decreases by 25-30 dB at a distance of 5 meters.

If desired, the customer can purchase additional components in the form of vibration isolators and flexible inserts, which can reduce the level of dynamic loads. It would not be amiss to acquire: reverse-acting flanges, frequency converters, as well as various devices, which allow you to make smooth start fan

Operating conditions
According to operational rules and regulations, in order for fans to serve their owner for many years, they must be installed outside the area where people are constantly present.

Products according to GOST 15150 standards are able to withstand a wide variety of climatic operating conditions, ranging from moderate to tropical climates.

Basic operating conditions:

The temperature around the device must correspond to:
- “-” 45 - “+” 40 degrees Celsius for a temperate climate;
- “-” 60 - “+” 40 degrees - for moderately cold climates;
- “-” 10 - “+” 50 degrees - for the tropics.
In this case, the average value of the so-called vibration velocity of all external mechanisms that serve as a source of vibration vibrations should be within 2 mm/s.

Overall and connection dimensions of VRAN fans (1st version)

Number
fan 		n n 1 n 2 n 3 Overall dimensions, mm
A A 1 A 2 B B 1 B 2 D d d 1 t t 1 Lmax L 1 L 2
Vran-2.5 175 160 200 325 240 348 280 M67 80 54 8 14 2 3 460 89 86
Vran-2.8 199 200 222 362 300 383 310 M67 100 41,5 8 14 2 3 480 101 101
Vran-3.15 217 200 240 399 300 420 345 M67 100 60 8 14 2 3 530 110 115
Vran-3.55 249 200 272 454 400 475 390 M67 100 37,5 8 16 2 4 580 127 129
Vran-4 281 200 310 512 400 538 430 M89 100 55 8 16 2 4 640 143 145
Vran-4.5 318 240 350 574 480 604 480 M89 120 55 8 16 2 4 770 160 164
Vran-5 353 300 380 643 600 668 530 M89 100 40 8 22 3 6 800 175 182
Vran-5.6 394 300 426 719 600 749 600 M89 100 63 8 22 3 6 865 198 202
Vran-6.3 441 400 470 801 700 830 660 M89 100 35 8 26 4 7 975 222 231
Vran-7.1 497 270 540 900 675 941 740 M89 135 135 8 18 2 5 1030 250 260
Vran-8 563 300 600 1009 750 1047 835 M89 150 150 8 18 2 5 1135 282 297
Vran-9 630 600 670 1132 1050 1170 940 M89 150 35 16 26 4 7 1250 318 335
Vran-10 703 450 750 1269 1050 1317 1050 M812 150 150 16 24 3 7 1340 353 366
Vran-11.2 784 750 830 1424 1350 1463 1170 M1012 150 40 16 32 5 9 1540 395 409
Vran-12.6 877 750 925 1593 1500 1638 1285 M1012 150 87,5 16 34 5 10 1750 440 455
Vran-14 980 672 1040 1460 - 1512 - - 12 168 - - 30 4 9 2150 594 980
Number
fan 		Installation dimensions, mm Flexible side insert:
C C 1 C 2 C 3 C 4 d 2 k k 1 injection suction
Vran-2.5 295 330 70 - - 10 70 - VG-N-2.5VG-V-2.5
Vran-2.8 295 365 80 - - 10 75 - VG-N-2.8VG-V-2.8
Vran-3.15 420 470 60 - - 10 75 - VG-N-3.15VG-V-3.15
Vran-3.55 460 530 104 - - 10 90 - VG-N-3.55VG-V-3.55
Vran-4 520 610 127 - - 11 90 - VG-N-4VG-V-4
Vran-4.5 525 660 140 - - 12 100 - VG-N-4.5VG-V-4.5
Vran-5 525 695 160 - - 12 100 - VG-N-5VG-V-5
Vran-5.6 550 740 183 - - 14 110 - VG-N-5.6VG-V-5.6
Vran-6.3 550 830 200 - - 14 110 - VG-N-6.3VG-V-6.3
Vran-7.1 710 750 200 - - 14 125 - VG-N-7.1VG-V-7.1
Vran-8 800 845 222 - - 14 125 - VG-N-8VG-V-8
Vran-9 870 950 258 - - 14 130 100 VG-N-9VG-V-9
Vran-10 960 960 218 - - 14 130 245 VG-N-10VG-V-10
Vran-11.2 1070 1090 245 - - 14 150 175 VG-N-11.2VG-V-11.2
Vran-12.5 1230 1200 235 - - 16 180 105 VG-N-12.5VG-V-12.5
Vran-14 2250 1060 1485 530 915 - 395 473 VG-N-14VG-V-14

Position of the VRAN fan casing is used. No. 1


Number
fan 		Overall dimensions, mm
0 0 45 0 90 0
B b H h B b H h B b H h
VRAN No. 2.5 456 186 240 173 423 190 240 312 390 173 240 270
VRAN No. 2.8 515 213 310 193 471 206 310 349 441 193 310 302
VRAN No. 3.15 572 236 310 215 521 225 310 388 491 215 310 336
VRAN No. 3.55 644 267 350 245 590 256 350 438 557 245 350 377
VRAN No. 4 738 301 390 290 686 310 390 514 641 290 390 437
VRAN No. 4.5 831 338 435 325 761 339 435 570 719 325 435 483
VRAN No. 5 913 375 535 338 832 363 535 619 776 338 535 538
VRAN No. 5,6 1020 420 570 375 924 399 570 688 865 375 570 600
VRAN No. 6.3 1140 474 665 420 1034 442 665 768 973 420 665 667
VRAN No. 7.1 1282 534 745 480 1167 499 745 869 1103 480 745 748
VRAN No. 8 1440 602 795 536 1304 553 795 972 1238 536 795 839
VRAN No. 9 1615 677 890 590 1467 621 890 1078 1379 590 890 938
VRAN No. 10 1797 751 970 656 1627 689 970 1204 1533 656 970 1046
VRAN No. 11.2 2004 841 110 735 1822 764 1100 1342 1716 735 110 1163
VRAN No. 12.5 2235 947 1230 810 2050 869 1230 1487 1905 810 1230 1302
VRAN No. 14 2760 1170 1365 965 - - - - 2350 965 1365 1590
Number
fan 		Overall dimensions, mm
135 0 270 0 315 0
B b H h B b H h B b H h
VRAN No. 2.5 515 202 240 234 390 173 340 186 515 202 340 190
VRAN No. 2.8 579 230 310 265 441 193 350 213 579 230 350 206
VRAN No. 3.15 644 257 310 296 491 215 410 236 644 257 410 225
VRAN No. 3.55 728 290 350 335 557 245 450 267 728 290 450 256
VRAN No. 4 840 326 390 376 641 290 470 301 840 326 470 310
VRAN No. 4.5 936 366 435 422 719 325 535 338 936 366 535 339
VRAN No. 5 1023 404 535 470 776 338 580 375 1026 406 580 363
VRAN No. 5.6 1143 455 570 525 865 375 665 420 1143 455 665 399
VRAN No. 6.3 1282 513 665 591 973 420 746 474 1282 513 746 442
VRAN No. 7.1 1447 578 745 667 1103 480 845 534 1447 578 845 500
VRAN No. 8 1623 651 795 751 1238 536 895 602 1623 651 895 553
VRAN No. 9 1811 733 890 846 1379 590 1010 677 1811 733 1010 621
VRAN No. 10 2017 814 970 939 1533 656 1100 751 2017 814 1100 689
VRAN No. 11.2 2253 911 1100 1051 1716 735 1250 841 2254 911 1250 764
VRAN No. 12.5 2512 1025 1230 1181 1905 810 1430 947 2512 1025 1430 869
VRAN No. 14 - - - - 2350 965 1635 1170 - - - -

Overall and mounting dimensions of VRAN fans (5th version)


№
fan 		Connecting dimensions, mm n n 1 n 2 n 3 Overall dimensions, mm
A A 1 A 2 IN IN 1 AT 2 D d d 1 t t 1 Lmax L 1 L 2
6,3 441 400 470 801 700 830 660 M89 100 35 8 26 4 7 1080 222 231
8 563 300 600 1009 750 1047 835 M89 150 150 8 18 2 5 1200 282 297
10 703 450 750 1269 1050 1317 1050 M812 150 150 16 24 3 7 1540 353 366
12,5 877 750 925 1523 1500 1638 1285 M1012 150 87,5 16 34 5 10 1710 440 455
№
fan 		Installation dimensions, mm Flexible side insert:
WITH C 1 C 2 C 3 d 2 d 3 To to 1 to 2 injection suction
6,3 980 1110 245 - 12 18 120 140 320 VG-N-6.3VG-V-6.3
8 1156 1190 310 - 12 18 130 301 294 VG-N-8VG-V-8
10 1456 1900 446 - 12 18 150 381 904 VG-N-10VG-V-10
12,5 1645 2025 550 2223 15 24 180 525 875 VG-N-12.5VG-V-12.5

Position of the VRAN fan housing diagram No. 5


№
fan 		Overall dimensions, mm
0 0 45 0 90 0
B B 1 b H h B B 1 b H h B B 1 b H h
6,3 1140 1736 474 671 426 1034 1662 442 671 768 973 1623 420 671 667
8 1440 1833 602 843 536 1304 1746 553 843 972 1238 1697 536 843 839
10 1797 2676 751 1050 656 1627 2568 689 1050 1204 1533 2507 656 1050 1046
12,5 2235 2918 947 1230 810 2050 2811 869 1230 1487 1905 2725 810 1230 1302
№
fan 		Overall dimensions, mm
135 0 270 0 315 0
B B 1 b H h B B 1 b H h B B 1 b H h
6,3 1282 1583 513 671 591 973 1490 420 751 474 1282 1839 513 751 442
8 1623 1646 651 843 751 1238 1531 536 933 602 1623 1967 651 933 53
10 2017 2444 814 1050 939 1533 2286 656 1150 751 2017 2833 814 1150 689
12,5 2512 2655 1025 1230 1181 1905 2440 810 1430 947 2512 3117 1025 1430 869

Veza

They have a left- and right-hand rotation impeller with specially shaped backward-curved blades. The spiral housing is rotary. Fans are manufactured according to the 1st and 5th design scheme in accordance with GOST 5976. The fans are installed in stationary air conditioning, ventilation and air heating systems of industrial, public and residential buildings.

VRAN ® - V fans RA dial with curved N rear wheel blades, with high efficiency and low noise level.

VRAN fans are manufactured in the following versions:

  • general industrial (N)
  • heat resistant (W)
  • corrosion resistant (K1)
  • corrosion-heat-resistant (K1Zh)
  • explosion-proof (B) - only according to the 1st design scheme
  • explosion-proof heat-resistant (VZh) - only according to the 1st design scheme
  • explosion-proof, corrosion-resistant (VK1; VK3) - only according to the 1st design scheme
  • explosion-proof, corrosion- and heat-resistant (VK1Zh) - only according to the 1st design scheme
  • earthquake-resistant (C) - for each of the above versions.

Fans available on request VRAN in a noise-insulating casing(manufactured for general industrial use and housing positions of 0 and 90 degrees) allows you to reduce the total sound power level by up to 12 dB, emitted by the fan, due to the noise-absorbing and sound-insulating properties of the casing. The total sound pressure level decreases by 25...30 dB at a distance of 5 m.

Additional fan kit available VRAN vibration isolators and flexible inserts, which reduces dynamic loads, as well as return flanges and frequency converters.

Execution 1.The fan impeller is mounted directly on the electric motor shaft.

Vent ilyatorsaccording to the 1st design scheme, there are two modifications VRAN6 and VRAN9, differing in the number of impeller blades.

Aerodynamic characteristics of VRAN6 and VRAN9 fans.Version 1

Version 1P (with frequency regulation)

Overall and connection dimensions VRAN6, VRAN9. Execution 1. Execution 1P:


Execution 5. The shaft with the impeller is mounted in two bearings and connected to the electric motor by a V-belt drive.

Fans according to the 5th design scheme (with a belt drive) have one modification - VRAN9.

Aerodynamic characteristics of VRAN9 fans.Version 5



Overall and connection dimensions of VRAN9. Version 5:

Designation structure for VRAN fans:



fans vran

Order radial fans with backward-curved blades VRAN from the VENTKOMPLEKS Company:


All fans are manufactured using modern, high-tech equipment. Welding of wheels is carried out using a robot welder. All fan casings are made as standard from galvanized steel using rolling technology.

Fans VRAN® They are manufactured in 16 standard sizes and provide a wide range of performance modes from 300 to 120,000 m3/h and pressure up to 2600 Pa. VRAN fans are used in systems where high efficiency is required, low level noise and in systems with parallel operation of several fans. According to their own technical parameters These fans correspond to the best foreign models, completely replace the well-known series of Russian fans VTs 4-70, VR 80-75, VR 86-77 and have a number of advantages over them:

1. Fans are produced with two modifications of impellers VRAN6 and VRAN9, differing in the number of blades, and are made with a dense standard range of R20 wheel diameters. This allows you to abandon the use of previously manufactured modifications of fans with intermediate impeller diameters and select the optimal fan for almost any given mode with minimal reserves of up to 5%.

2. Several options have been introduced - classes of wheel design depending on the value of the peripheral speed, which provide reliable operation fans during the entire period of their operation. The strength calculations of the impellers using the finite element method were fully confirmed by relevant experiments.

3. Power reserves have been optimized when choosing motors, which allows the use of motors with lower installed power, especially for small fans.

4. All types of fans are designed according to the first design scheme using frequency converters, which makes it possible to adjust the fan operating mode during commissioning tests and during operation. A selection methodology has been developed optimal type motor operating with a frequency converter, and the possible range of current frequency changes.

5. With a simpler design of the wheel and seal assembly between the wheel and the inlet pipe, high aerodynamic parameters of serial products are ensured due to precision manufacturing and high-quality assembly technology.

6. A denser range of R20 impeller diameters has been introduced for small fans, which are most widely used as built-in ones in various installations.

7. Power reserves have been optimized when choosing motors, which allows the use of motors with lower installed power, especially for small fans.

8. The shape of the volute casing has been changed - the size of the outlet flange has been increased, which ensures a reduction average speed in the outlet section of the fan and pressure losses in the connected ventilation network. Reducing the fan outlet speed also increases the static pressure of the fan.

To obtain a quick calculation of VRAN radial fanssend your request to e-mail: . VENTCOMPLEX Company specialists have the necessary selection programs ventilation equipment, incl. radial fans.

The VEZA plant is Russia's largest manufacturer of ventilation equipment, including such products as a centrifugal fan for general industrial use. Centrifugal fan series VR-80-75 or VRAN - this is the original name VEZA, VTs-14-46 or VRAV - is used in ventilation, air conditioning and air heating systems for various purposes.

Radial fans VRAN-DU and VRAV-DU are installed in special exhaust ventilation systems to remove gases arising from a fire and simultaneously remove heat outside the room. At the same time, localization of the fire zone is ensured and the possibility of carrying out fire fighting and rescuing people and equipment is created. The units can move gas-air mixtures with temperatures of 400°C and 600°C for at least 120 minutes.

Centrifugal fan VR-80-75 - replacement with a VRAN fan at the request of the Buyer.

VRAN fans low pressure are manufactured in general industrial, heat-resistant, corrosion-resistant, northern and explosion-proof versions. The impellers of such a fan contain 9 or 6 backward-curved blades. Thanks to a wide range of standard sizes and two types of impellers, the centrifugal fan very tightly covers the operating points for the main ventilation tasks.

The centrifugal fan VRAN is manufactured according to the 1st (with direct connection to the engine) and 5th (with a belt drive) design design schemes. Capacity from 1000 m³/h to 100,000 m³/h, total pressure from 100 Pa to 1800 Pa.

The VRAN centrifugal fan is used in systems that require high efficiency, low noise levels and in systems with parallel operation of several fans.

Fan VRAN9

Low-pressure fans VRAN6 and VRAN9 are used to move gas and steam-air mixtures, which can also include explosive ones. The units are used in stationary ventilation and air conditioning systems, as well as in air heating systems for public, industrial and residential buildings, as well as for industrial and sanitary purposes.

  • Fans that meet the first design scheme are produced in 16 standard sizes.
  • Fans that meet the fifth design scheme are manufactured in four standard sizes.
  • Produced in accordance with TU 4861-105-40149153-2007;
  • Certified and certified for work in explosive industries.

VRAN6 and VRAN9 are produced in the following versions, according to operating conditions:

  • according to the first and fifth design scheme:
  1. general industrial (N);
  2. corrosion resistant (K);
  3. heat-resistant (W);
  4. corrosion-heat-resistant (K1Zh).
  • according to the first design scheme:
  1. explosion-proof (B);
  2. explosion-proof, corrosion-resistant (VK1);
  3. explosion-proof, corrosion-resistant (VK3);
  4. explosion-proof heat-resistant (VZh);
  5. explosion-proof, corrosion-heat-resistant (VK1Zh);
  6. earthquake-resistant (C).

VRAN fans can be operated in the following weather and climatic conditions:

  • temperate climate (U). Temperature environment from -45 to + 40 °C and the average value for the vibration velocity of external vibration generators at the installation site of the VRAN fan is no more than 2 mm/s.
  • temperate and cold climates (UCL). Ambient temperature from -60 to +40 °C and the average value for the vibration velocity of external vibration generators at the installation site of the VRAN fan is no more than 2 mm/s.
  • tropical climate (T). Ambient temperature from -10 to +50 °C and the average value for the vibration velocity of external vibration generators at the installation site of the VRAN fan is no more than 2 mm/s.

Advantages of VRAN9 fans:

    the installed power of the motors per fan has been reduced;

    Dimensions and weight are reduced;

    used new technology manufacturing the body from galvanized steel;

    proposed additional options on the use of flexible rates and vibration isolators;

    a new, denser standard size series R20, accepted in the world, was introduced;

    the outlet opening has been enlarged in accordance with European Standards.

Fans VRAN-DU

Fan VRAN-DU has a left- or right-hand rotation impeller with specially shaped backward-curved blades, ensuring high efficiency and low noise. The spiral housing is rotary. All standard sizes of fans are manufactured according to design scheme 1 (with direct connection to the motor). Fans No. 4 are manufactured according to design scheme 5 (with belt drive); 5; 6.3; 8; 10 and 12.5.

The fan impellers are made of St3 steel (for temperatures up to 400°C) and 12Х18Н10Т steel (for temperatures up to 600°C) with a heat-resistant paint and varnish coating. Thermal protection of bearing units ensures reliable operation of the fan when moving hot gases.

VRAN-DU fans for supply systems smoke ventilation installed in special supply systems smoke removal to create overpressure(support) in staircases, airlock vestibules and elevator shafts of buildings to prevent smoke from penetrating into these rooms and to create the possibility of carrying out firefighting work and rescuing people and equipment.

The fans are certified and have permission for use in explosive and chemically hazardous industries and facilities.

Fan device

    • Type sizes: 400-1250 mm - 1st version;
    • Type sizes: 630-1250 mm - 5th version;
    • 400°C; 600°C - 120 min;
    • General industrial;
    • Corrosion resistant;
    • Explosion-proof;
    • The family of air exhaust fans has been expanded - fans operating in general exhaust mode (in addition to the emergency mode of remote control);
    • Modification of fans with VFD;
    • Application of engines with increased efficiency on demand IE2 or IE3

Veza VRAN6-071-DU fans have a left- or right-hand rotation impeller with specially shaped backward-curved blades that provide high efficiency and low noise.

The spiral housing is rotary. It is possible to operate the fans in the smoke removal mode (SD) and in the combined smoke removal and ventilation mode (SUV). In the latter case, the fans are equipped with motors for long-term permanent job.

The fans are equipped with standard 3-phase asynchronous single-speed motors. For VRAN9 fans according to the 1st design scheme, it is possible to equip them with motors that allow frequency regulation rotation speed.

For housing position P0 and LO for the 1st category of placement (outdoor), protection from atmospheric precipitation ZONT-VRAN is provided (ordered separately as an option).

Operating operating temperature Veza VRAN6-071-DU

Veza VRAN6-071-DU fans must be installed outside the serviced premises and outside the area of ​​permanent residence of people.
Fans can be operated in moderate conditions (U); temperate and cold (UHL) and tropical (T) climates of the 1st and 2nd categories of placement according to GOST 15150.

  • ambient temperature
    - from minus 45 to +40°С for temperate climates,
    - from minus 60 to +40°С for moderate and cold climates,
    - from minus 10 to +50°С for tropical climates;
  • the average vibration velocity of external vibration sources at the fan installation sites is no more than 2 mm/s.

Name and designation Veza VRAN-DU

VRAN-DU performance chart



Design and dimensions

On request we supply the kit

  • Thermal and noise insulating casing TShK
  • Soft connector COM-VRAN
  • Protection ZONT-VRAN
  • Cabinet ShSAU
  • Vibration isolators
  • Reverse flange - FOV - FON
  • Frequency converter
  • Soft starter

VRAN-DU 6.3 fans are installed in special exhaust systems to remove gases arising from a fire and at the same time remove heat outside the room, they can move gas-air mixtures with temperatures up to 400°C and up to 600°C for at least 120 minutes. At the same time, localization of the fire zone is ensured and the possibility of carrying out fire fighting and rescuing people and equipment is created.

According to the 1st design scheme, fans are manufactured in the following standard sizes: 5; 6.3; 8.

According to the 5th design scheme, fans are manufactured in the following standard sizes: 6.3; 8; 10; 12.5.

Manufacturing options

general industrial (N)
corrosion resistant (K1)
explosion-proof (B) - only according to the 1st design scheme
explosion-proof, corrosion-resistant (VK1) - only according to the 1st design scheme

Design

VRAN-DU 6.3 fans have an impeller drum type left or right rotation with 32 forward curved blades. The spiral housing is rotary. The inlet pipe has cylindrical shape and does not enter the impeller, which ensures reliable operation of the fan at high temperature moving environment.

The VRAN-DU 6.3 version of fans in a noise-insulating casing (manufactured for general industrial design and casing positions of 0 and 90 degrees) allows you to reduce the total level of sound power emitted by the fan by up to 12 dB due to the noise-absorbing and noise-insulating properties of the casing. The total sound pressure level decreases by 25...30 dB at a distance of 5 m.

Additional equipment is offered with vibration isolators and flexible inserts, which reduce dynamic loads, as well as return flanges and an automation cabinet.

Exploitation

Fans must be installed outside the serviced premises and outside the area of ​​permanent residence of people.

Fans can be operated in moderate conditions (U); temperate and cold (UHL) and tropical (T) climates of the 1st and 2nd categories of placement according to GOST 15150.

terms of Use

ambient temperature
from minus 45 to +40°С for temperate climates,
from minus 60 to +40°С for moderate and cold climates,
from minus 10 to +50°С for tropical climates;

the average vibration velocity of external vibration sources at the fan installation sites is no more than 2 mm/s;

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