Fans for rectangular ducts. Rectangular duct fans
Fans for rectangular ducts used in ventilation of industrial and public buildings I install them in places where there is limited space for installing ventilation, but where frequent cleaning of the impeller is necessary. Apply rectangular duct fans for exhaust hoods, supply systems ventilation systems with rectangular air ducts. The galvanized body and hinged lid of the device are easy to use. The fan blades can be bent forward or backward (depending on the manufacturer and the required functions), they provide good cleaning air., The fan can be installed in any position.
It is recommended to install blades with forward curved blades in systems with long length air ducts and increased aerodynamic resistance of the network. The devices themselves are reliable, perform their functions well, work for a long time, without much maintenance or intervention.
Devices with backward-curved blades consume two to three times less electricity than the previous type of device. They have higher efficiency at low speeds, higher static pressure and low noise levels during operation. Their service life is further increased by blowing air onto the impeller and electric motor.
Duct fans for rectangular ducts
Rectangular
VKP 40-20 - VKP 100-50 / VKP-P 40-20 - VKP-P 80-50 220V/380V. Forward curved shoulder blades
Duct fans for round ducts
Round
VKK 100-355 / VKK-P 100-315 / VKK 100M-315M / VKK-P 100M-315M. Housing galvanized or plastic
Silent
TD-800/200, TD-1000/200, TD 1300/250, TD 2000/315 Silent. Compact size and minimal noise level
Speed controller
Smooth thyristor controller for regulating the rotation speed of fan motors
VKK duct fans are in stock! In a warehouse in Moscow. Fast sending! The best prices.
Description Design Advantages of VKK and VKP Prices Application
Description and application of duct fans
Duct fans of round and rectangular cross-section are designed for operation as part of duct supply and exhaust ventilation systems. They can be installed both on supply and exhaust air lines.
By using duct fans it is possible to organize a technically simple and relatively inexpensive system quality air exchange in office space, mini-hotel, residential building, industrial premises small area and etc.
Duct fans have simple design, are highly reliable in operation and, if installed correctly and operating conditions are observed, require a minimum of maintenance.
Our catalog contains
- Round duct fans (sizes from 100 to 355mm):
- VKK (plastic case, standard version)
- VKK-P - silent (plastic case, premium design, uses a wheel motor from the German company Ebm-Papst)
- VKK-M (metal case, standard version)
- VKK-P-M - silent (metal body, premium design, uses a wheel motor from the German company Ebm-Papst)
- Rectangular duct fans (VKP 40-20 - VKP 100-50):
- VKP (standard version)
- VKP-P - silent (premium design, uses a wheel motor from the German company Ebm-Papst)
- Speed controllers:
- Triac speed controller SRM
- Transformer speed controllers - five-stage
Design of duct fans
Duct fans have a compact monoblock design and are completely ready for installation and commissioning.
Duct fans are built directly into the gap in the air ducts in the linear section of the ventilation main. To reduce the level of vibrations and noise from an operating fan, it is recommended that installation and mating with air duct flanges be carried out using flexible inserts of the appropriate cross-section.
An axial-type impeller is located inside the round duct fan housing. Inside the housing of the rectangular duct fan there is a centrifugal Working wheel. The impeller bushings are mounted directly on the rotors of electric motors.
To protect equipment from overheating, the design of duct heaters includes temperature sensors (to automatically turn off the drive).
The motor terminal box and speed controller (if equipped) are located on the outer part of the housing.
When installing duct fans in an air duct network, mechanical filters (in front of the fan) and noise suppressors (at the air flow outlet from the fan) are usually additionally installed.
Main advantages of duct type fans
- Long service life
- Compact design
- Installation in any position
- Motor and impeller form a single unit
- The speed can be adjusted using transformer and electronic devices
- Low starting current
Round and rectangular duct fans
And duct fans are manufactured in standard sizes (dimensions are unified with standard sizes round and rectangular air ducts, respectively).
Round duct fans VKK designed to work as part of channel systems ventilation with round air ducts and serve to generate supply or exhaust air flow along the air ducts.
Rectangular duct fans VKP are designed to work as part of duct ventilation systems with rectangular air ducts and serve to generate supply or exhaust air flow along the air ducts.
Depending on the duct fan model, the drive can be powered by a 380V or 220V network.
When choosing a duct fan based on its rated power, it must be chosen “with a reserve” (over time, the aerodynamic resistance of the air ducts increases due to contamination of the internal walls).
Price list of round duct fans VKK
PRICE. VKK STANDARD series in galvanized housing (in rubles)
PRICE. VKK series PREMIUM in galvanized casing (in rubles)
PRICE. VKK STANDARD series plastic case(in rubles)
PRICE. VKK-P series PREMIUM in a plastic case (in rubles)
PRICE. Triac speed controller SRM
Price list of Rectangular duct fans VKP
Prices (rub.) VKP fan series STANDARD. Expand the tab
| Rectangular duct fans VKP series STANDARD | ||||||
|---|---|---|---|---|---|---|
| Fan brand | n. rpm | N, kW | Current, A | Q max, m3/h | P max, Pa | Price |
| VKP 40-20-4E (220V) | 1280 | 0,33 | 1,5 | 1200 | 250 | 9 008 |
| VKP 40-20-4D (380V) | 1270 | 0,33 | 0,6 | 1200 | 250 | 8 788 |
| VKP 50-25-4E (220V) | 1320 | 0,51 | 2,3 | 1600 | 300 | 12 063 |
| VKP 50-25-4D (380V) | 1300 | 0,49 | 0,8 | 1800 | 310 | 11 128 |
| VKP 50-25-6D (380V) | 930 | 0,30 | 0,8 | 1500 | 120 | 11 205 |
| VKP 50-30-4E (220V) | 1330 | 0,90 | 4,1 | 2500 | 390 | 13 308 |
| VKP 50-30-4D (380V) | 1400 | 0,87 | 1,8 | 2450 | 410 | 13 371 |
| VKP 50-30-6D (380V) | 910 | 0,32 | 0,8 | 1590 | 140 | 13 554 |
| VKP 60-30-4E (220V) | 1360 | 1,60 | 7,3 | 2700 | 420 | 20 059 |
| VKP 60-30-4D (380V) | 1360 | 1,70 | 3,2 | 3500 | 450 | 19 320 |
| VKP 60-30-6D (380V) | 900 | 0,45 | 0,9 | 2470 | 230 | 18 304 |
| VKP 60-35-4D (380V) | 1360 | 2,20 | 4,0 | 4200 | 620 | 22 377 |
| VKP 60-35-6D (380V) | 840 | 0,78 | 1,5 | 3500 | 250 | 22 287 |
| VKP 70-40-4D (380V) | 1340 | 3,50 | 5,9 | 5600 | 790 | 29 027 |
| VKP 70-40-6D (380V) | 810 | 1,15 | 2,3 | 4500 | 300 | 28 215 |
| VKP 80-50-4D (380V) | 1400 | 4,80 | 8,0 | 6500 | 1000 | 47 458 |
| VKP 80-50-6D (380V) | 870 | 2,80 | 4,9 | 6900 | 430 | 42 596 |
| VKP 100-50-6D (380V) | 900 | 3,50 | 6,1 | 8000 | 650 | 62 451 |
Prices (RUB) Fan VKP-P series PREMIUM. Expand the tab
| Rectangular duct fans VKP-P series PREMIUM (ebm-papst wheel motor) | ||||||
|---|---|---|---|---|---|---|
| Fan brand | n. rpm | N, kW | Current, A | Q max, m3/h | P max, Pa | Price |
| VKP-P 40-20-4E (220V) | 1300 | 0,28 | 1,3 | 1380 | 275 | 11 163 |
| VKP-P 40-20-4D (380V) | 1350 | 0,29 | 1,0 | 1450 | 280 | 9 889 |
| VKP-P 50-25-4E (220V) | 1330 | 0,40 | 2,0 | 1600 | 300 | 13 272 |
| VKP-P 50-25-4D (380V) | 1350 | 0,60 | 1,2 | 1800 | 310 | 12 383 |
| VKP-P 50-30-4E (220V) | 1270 | 0,64 | 2,8 | 2500 | 390 | 14 929 |
| VKP-P 50-30-4D (380V) | 1400 | 0,70 | 1,6 | 2450 | 410 | 16 191 |
| VKP-P 60-30-4E (220V) | 1230 | 1,05 | 4,8 | 2800 | 630 | 22 247 |
| VKP-P 60-30-4D (380V) | 1330 | 1,32 | 2,8 | 3500 | 650 | 21 705 |
| VKP-P 60-35-4D (380V) | 1310 | 2,18 | 3,9 | 4600 | 580 | 25 516 |
| VKP-P 70-40-4D (380V) | 1300 | 4,37 | 7,9 | 7050 | 830 | 34 445 |
| VKP-P 80-50-4D (380V) | 1210 | 4,92 | 8,5 | 7500 | 1150 | 52 777 |
Prices (RUB) Transformer speed controllers. Expand the tab
| Transformer speed controllers - five-stage | ||||||
|---|---|---|---|---|---|---|
| Name | Number of phases | Voltage | Current, A | Usage | Price with VAT) | |
| IT.D01 | 3 | 400V | 1 | For fans with three-phase motor(marking 4D, 6D), operating at a voltage of 380V. The selection of the regulator is carried out according to the value of the consumed current (Current, A) | 27 287 | |
| IT.D02 | 3 | 400V | 2 | 29 898 | ||
| IT.D04 | 3 | 400V | 4 | 33 358 | ||
| IT.D05 | 3 | 400V | 5 | 37 993 | ||
| IT.D07 | 3 | 400V | 7 | 40 931 | ||
| IT.D10 | 3 | 400V | 10 | 63 583 | ||
| IT.E02 | 1 | 230V | 2 | For fans with a single-phase motor (marked 4E), operating at a voltage of 220V. The selection of the regulator is carried out according to the value of the consumed current (Current, A) | 9 270 | |
| IT.E03 | 1 | 230V | 3 | 13 317 | ||
| IT.E05 | 1 | 230V | 5 | 16 059 | ||
| IT.E10 | 1 | 230V | 10 | 24 806 | ||
Duct fans, regardless of size, shape and design features, are used in ventilation systems for any purpose (supply, exhaust, supply and exhaust). They can be built into both the supply circuit and the exhaust circuit.
This equipment is intended for the installation of not too complex air exchange schemes, such as ventilation of offices, small hotels, residential buildings, small industrial buildings, etc. Moreover, the cost of such an installation is very moderate.
The device has a simple design, which significantly increases its durability and reliability during operation. With proper installation and full compliance with the manufacturer's recommendations, maintenance during operation is reduced to a minimum.
Design and principle of operation
Industrial fans channel type consist of a single block designed as compactly as possible. The units are produced completely ready for installation and operation. No need preliminary preparation and adjustments.
Installation is carried out by embedding the device directly into the air main channel ventilation system . To reduce the noise and vibration effects produced by the motor, it is recommended to use flexible inserts of the required size to connect the fan to the air duct parts.
Design feature of the industrial fan round section is an axial-type impeller located directly inside the housing. Rectangular units are characterized by a centrifugal impeller, also located in the housing. The impellers are attached to the rotors of the electric motors by means of bushings.
To heat the air in the air ducts and control its temperature, duct heaters equipped with temperature sensors are used. There is an automatic stop of heating when the air reaches the selected temperature.
If the design includes a speed controller, it is installed on the outside of the housing. The terminal box is also located there.
Most often, the design provides for additional filtering devices installed in the ventilation system before the fan, and noise suppressors located at the outlet of the air flow from the fan.
Execution options
Fans, regardless of shape, are produced in any traditional standard sizes used in accordance with standardization standards for air ducts of rectangular and round cross-section.
Power is supplied from a 220 or 380V network depending on the device model.
Buy a fan channel type for round and rectangular air ducts you can right now by calling us at 495-380-06-76 or placing an order directly on the website. When selecting the model you need, it is recommended to make some reserve compared to the required power, because... Over time, air lines become naturally contaminated, which leads to an increase in aerodynamic resistance in the system.
A rectangular duct fan is designed to organize supply or exhaust ventilation, which are mounted directly into a rectangular duct.
Rectangular duct fans, as a rule, provide significantly higher air flow than fans for round ducts.
Installation
Rectangular duct fans are installed with the expectation of service maintenance. It is necessary to ensure free access to the motor wheel and terminal box. Rectangular duct fans can be installed in any position: vertical or horizontal. Rectangular duct fans on both sides have flange connections , which facilitates their connection to the air duct. For a hermetically sealed connection between the fan and the air duct, it is necessary to use a wafer sealing tape with a thickness of at least 5 mm.
The rectangular duct fan is available with both forward-curved and backward-curved impeller blades.
Designations
| Rectangular duct fan type | Channel cross-section, mm | Voltage, V | engine's type | Thermal contacts | shoulder blades | Number of motor poles |
| Shuft RFE-B 300x150-2 VIM | 300 x 150 | 220 | Asynchronous | Built-in | Curved back | 2 |
| Ruck KVR 7040 D4 30 | 700 x 400 | 380 | Asynchronous | Built-in | Curved back | 4 |
Role in the ventilation system
If we're talking about about the organization supply ventilation using a rectangular duct fan, it is recommended to install in front of it: a valve and actuator for ventilation (closing the valve when the unit is turned off), a pocket or cassette filter, electric heater/ or a water heater for rectangular ducts and a set of automatic equipment. If installed in a ventilation system, then for control you need to purchase: a sensor differential pressure to determine the pressure on the fan when the filter is dirty, Pulser temperature controller (setting the required temperature), temperature sensor. Rotation speed control in rectangular duct fans controls the rotation speed or economical 
a frequency converter. It is recommended to use a high-quality and inexpensive Danfoss frequency converter. To reduce the level of internal noise in the duct, after the rectangular duct fan it is necessary to install a rectangular section silencer.
Soundproof fan
To reduce the external noise level coming from a rectangular duct fan, additional sound insulation of the fan itself is used from mineral wool or install more expensive soundproofed rectangular duct fans.
When using a rectangular duct fan to organize exhaust ventilation, it is necessary to install: a valve with a drive, a silencer, a transformer or frequency converter. To synchronize the operation of an exhaust rectangular duct fan and supply fan It is possible to use one fan speed controller with a current index greater than the sum of the fan currents.
Price and differences
The price of rectangular duct fans starts from 9,000 rubles and depends on many factors:
- According to the connected voltage - 220 V or 380 V;
- For the cross-section of a rectangular channel - from 400 x 200 to 1000 x 500 mm;
- According to the flow rate of moved air - from 350 to 18,000 m 3 /hour;
- In terms of energy saving - traditional motors (asynchronous) or EC motors (synchronous) brushless;
- By the number of motor poles;
- By design - with a removable motor-wheel, in a sound-insulated housing;
- According to the type of fan blades - forward curved, such fans have more compact sizes or backward curved blades, provide greater efficiency and less noise;
- By the presence of thermal protection when the motor overheats;
- In terms of sound insulation - in a soundproof (soundproof) housing or without.
How to buy
Want to buy rectangular duct fan? Use the convenient equipment selection filter on the left side of the page.
For correct selection rectangular duct fan must be specified:
- Connected duct size - width and height in mm;
- Number of fan phases - 1 or 3 phases;
- Required air flow, m 3 /hour.
Are you unsure about your choice? We will be happy to advise you and select the desired model rectangular duct fan, if necessary, we will make a ventilation project and, of course, we will carry out high-quality installation of the fan in Moscow on time!
Our online store sells rectangular duct fans not only in Moscow And Moscow region, but throughout Russia.