Rectangular extractor fan. Fans for rectangular ducts. Description and application of duct fans
Advantages of rectangular duct fans:
Small design
- Built-in thermal protection
- Installation in any position
- Performance adjustment
- Long non-operating service life various conditions work.
Rectangular duct fans, as the name implies, they are used in systems with rectangular ventilation ducts, this species channels are widely distributed in both supply and exhaust ventilation systems of various complexes and facilities for various purposes. The compact dimensions make installation and commissioning easy. Accession to the air duct system is carried out using flanges.
The impeller is installed inside a rectangular metal casing, the RC has forward curved blades. The motors are asynchronous three-phase with an external rotor of 380 volts. Housing material, galvanized steel, reliably protected from external corrosion. Built-in thermal contacts are an integral part of modern motors used in fans, they provide adequate protection against overheating.
Conventions duct fans
Brand, model, typical channel size
Example: " Ostberg RKB 1000x500 L3
"
Rectangular duct fan is designed for supply or exhaust ventilation, which are mounted directly in a rectangular duct.
Rectangular duct fans, as a rule, provide significantly more air flow than fans for round ducts.
Installation
Rectangular duct fans are installed with the expectation of service maintenance. It is necessary to provide free access to the motor-wheel and the terminal box. Installation of rectangular duct fans can be carried out in any position: vertical or horizontal. Rectangular duct fans on both sides have flange connections which facilitates their connection to the duct. For hermetic connection of the fan with the air duct, it is necessary to use a wafer sealing tape not less than 5 mm thick.
The rectangular duct fan is available with both forward-curved and backward-curved impeller blades.
Notation
| Rectangular duct fan type | Channel 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 are talking about the organization supply ventilation using a rectangular duct fan, it is recommended to install in front of it: a valve and an actuator for ventilation (closing the valve when the unit is turned off), a pocket or cassette filter, electric heater/ or water heater for rectangular channels and a set of automation. If installed in the ventilation system, then for control it is necessary to purchase: a differential pressure sensor to determine the pressure on the fan when the filter is dirty, a Pulser temperature controller (setting the required temperature), a temperature sensor. Rotation speed control in rectangular duct fans implements a speed controller or economical 
a frequency converter. It is recommended to use a quality and inexpensive Danfoss frequency converter. To reduce the level of internal noise in the duct, a rectangular duct silencer must be installed after the rectangular duct fan.
Soundproof fan
To reduce the external noise level coming from a rectangular duct fan, additional sound insulation of the fan itself is used. mineral wool or install more expensive soundproof rectangular duct fans.
When using a rectangular duct fan for the organization of exhaust ventilation, it is necessary to install: a damper with a drive, a silencer, a transformer or a 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;
- Cross-section of a rectangular channel - from 400 x 200 to 1000 x 500 mm;
- According to the flow of transported air - from 350 to 18,000 m 3 / hour;
- For 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 soundproof housing;
- By the type of fan blades - forward curved, such fans have more compact dimensions or backward curved blades, provide greater efficiency and less noise;
- By the presence of thermal protection in case of overheating of the motor;
- In terms of sound insulation - in a soundproof (soundproof) case or without.
How to buy
Want to buy rectangular duct fan Use the convenient filter for selecting equipment on the left side of the page.
For correct selection rectangular duct fan, you must specify:
- Connectable duct size - width and height in mm;
- Number of fan phases - 1 or 3 phases;
- Required air flow, m 3 / hour.
Doubt your choice? We will be happy to advise you, select the right model of a rectangular duct fan, if necessary, we will make a ventilation project and, of course, we will produce quality installation fan in Moscow just in time!
Our online store sells rectangular duct fans not only in Moscow And Moscow region, but throughout Russia.
Fans for rectangular ducts used in ventilation of industrial and public buildings, I install them in places where the space for ventilation installation is limited, but at the same time, frequent cleaning of the impeller is necessary. Apply rectangular duct fans for exhaust, supply systems ventilation with rectangular ducts. The galvanized body and folding cover of the device are convenient in operation. The fan blades can be curved forward or backward (depending on the manufacturer and necessary functions), they provide good cleaning air., You can install the fan in any position.
With forward-curved blades, it is recommended to install in systems with a large length of 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 electricity two to three times less than the previous type of devices. They have higher efficiency at low speeds, higher static pressure and low noise level during operation. Their service life is additionally increased by blowing the air flow on the impeller and electric motor.
Inline 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
Inline fans for round ducts
Round
VKK 100-355 / VKK-P 100-315 / VKK 100M-315M / VKK-P 100M-315M. Casing galvanized or plastic
Silent
TD-800/200, TD-1000/200, TD 1300/250, TD 2000/315 Silent. Compact dimensions and minimal noise level
Speed controller
Smooth thyristor controller for speed control of fan motors
Inline fans VKK 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
Inline fans of round and rectangular cross section are designed for operation as part of inline supply and exhaust ventilation systems. They can be installed both on supply air lines and on exhaust lines.
With the help of duct fans, it is possible to organize a technically simple and relatively inexpensive system quality air exchange office space, mini-hotel, residential building, industrial premises small area, etc.
Duct fans have simple design, highly reliable in operation, with proper installation and observance of operating conditions 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 version, a motor-wheel is used German company Ebm-Papst)
- VKK-M (metal case, standard version)
- VKK-P-M - silent (metal case, premium version, the motor-wheel of the German company Ebm-Papst is used)
- Rectangular duct fans (VKP 40-20 - VKP 100-50):
- VKP (standard version)
- VKP-P - silent (premium version, the motor-wheel of the German company Ebm-Papst is used)
- Speed controllers:
- Triac speed controller CPM
- Transformer speed controllers - five-stage
Design of duct fans
Duct fans have a compact design in the form of a monoblock and are completely ready for installation and commissioning.
Inline fans are built directly into the gap in the air ducts on the linear section of the ventilation line. To reduce the level of vibrations and noise from a running fan, it is recommended to install and interface with air duct flanges using flexible connectors of the appropriate section.
Inside the casing of the round duct fan there is an axial-type working impeller. A centrifugal impeller is placed inside the housing of a rectangular duct fan. Impeller bushings are mounted directly on the rotors of electric motors.
To protect equipment from overheating, the design of duct heaters includes temperature sensors (for automatic shutdown drive).
The motor terminal box and the speed controller (if any) are placed on the outer part of the housing.
When installing duct fans in the air duct network, mechanical filters are usually additionally installed (in front of the fan) and silencers (at the outlet of the air flow from the fan).
The main advantages of duct type fans
- Long service life
- Compact design
- Mounting in any position
- Motor and impeller form a single unit
- The number of revolutions can be adjusted using transformer and electronic devices
- Small starting current
Round and rectangular duct fans
And inline fans are manufactured in standard sizes (dimensions are unified with standard sizes round and rectangular ducts, respectively).
Round duct fans VKK designed to work with channel systems ventilation with round ducts and serve to generate supply or exhaust air flow along the ducts.
Rectangular duct fans VKP are designed to work as part of duct ventilation systems with rectangular air ducts and are used to generate supply or exhaust air flow along the air ducts.
Depending on the duct fan model, the drive can be powered by 380V or 220V mains.
When choosing a duct fan according to its rated power, it must be chosen “with a margin” (over time, the aerodynamic resistance of air ducts increases due to contamination of the inner walls).
Price list of VKK round duct fans
PRICE. VKK series STANDARD in a galvanized case (in rubles)
PRICE. VKK series PREMIUM in a galvanized case (in rubles)
PRICE. VKK series STANDARD plastic case(in rubles)
PRICE. VKK-P series PREMIUM in a plastic case (in rubles)
PRICE. Triac speed controller CPM
Price list of VKP rectangular duct fans
Prices (rub.) VKP STANDARD series fan. Expand tab
| Rectangular duct fans VKP STANDARD series | ||||||
|---|---|---|---|---|---|---|
| Fan brand | n. rpm | N, kW | Current, A | Qmax, m3/h | Pmax, 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 tab
| Rectangular duct fans VKP-P PREMIUM series (ebm-papst wheel motor) | ||||||
|---|---|---|---|---|---|---|
| Fan brand | n. rpm | N, kW | Current, A | Qmax, m3/h | Pmax, 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 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 a three-phase motor (marking 4D, 6D) operating at 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 (marking 4E) operating at 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). Can be embedded in supply scheme, and in the hood.
This equipment is designed for a device that is not too complex schemes air exchange, such as ventilation of offices, small hotels, residential buildings, small industrial buildings and so on. At the same time, the cost of such an installation is very moderate.
The device has a simple design, which significantly increases its durability and reliability in operation. With proper installation and full implementation manufacturer's recommendations, maintenance during operation is reduced to a minimum.
Design and principle of operation
Industrial fans channel type consist of a single unit, designed as compactly as possible. Units are produced in a form completely ready for installation and operation. No need pre-training and tweaks.
Installation is carried out by embedding the device directly into the air line channel ventilation system . In order to reduce the noise and vibration effects produced by the motor, it is recommended to use flexible connectors of the required standard size to connect the fan to the duct parts.
A design feature of a circular section industrial fan is an axial-type bladed impeller located directly inside the housing. Rectangular units are characterized by a centrifugal impeller, also located in the housing. The impellers are connected 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. The automatic termination of heating on achievement by air of the chosen temperature is provided.
If the design provides for a speed controller, it is installed on the outer part of the housing. There is also a terminal box.
Most often, the project provides for additional filtering devices mounted in the ventilation system before the fan, and sound attenuators built at the outlet of the air flow from the fan.
Versions
Fans, regardless of shape, are produced in any traditional standard sizes used in accordance with standardization standards for rectangular and round air ducts.
Power is supplied from a 220 or 380V network, depending on the model of the device.
Buy a fan channel type for round and rectangular ducts you can right now by calling us at 495-380-06-76 or by placing an order directly on the site. When choosing the model you need, it is recommended to make some margin compared to the required power, because. over time, the air lines naturally become polluted, which leads to an increase in aerodynamic drag in the system.
