VC 6-28 (VR 120-28) #11.2 w/motor AIR 250 S4 75 kW 1500 rpm, execution 1

The centrifugal (radial) high-pressure fan series VC 6-28 (VR 120-28) #11,2 with electric motor Electric motor AIR 250 S4 75 Power kW 1500 Vol./Min.

This fan is designed for moving air and other gas mixtures, the corrosiveness of which, relative to carbon steel of standard quality, does not exceed that of air, with temperatures up to +80°C, and free from sticky substances, fibrous materials, as well as dust and other solid impurities not exceeding 100 mg/m³.

General Information about High-Pressure Centrifugal Fans VC 6-28 (VR 120-28) #11.2 w/motor AIR 250 S4 75 kW 1500 rpm 

- High pressure;
- Single-sided suction;
- Spiral rotatable housing;
- Forward-curved blades;
- Number of blades: 16;
- Rotation direction: right and left;
- Material: carbon steel;
- Design schemes:
  - No. 1: working impeller on the motor shaft;
  - No. 5 (belt-driven): using a V-belt transmission (V-belts, driving and driven pulleys);

Applications of High-Pressure Centrifugal Fans VC 6-28 (VR 120-28) #11.2 w/motor AIR 250 S4 75 kW 1500 rpm

These fans are used in air conditioning and ventilation systems, as well as for other sanitary-technical and industrial purposes. Centrifugal fans VC 6-28 (VR 120-28) #11.2 w/motor AIR 250 S4 75 kW 1500 rpm are employed for air supply to furnaces, ovens, grain elevator ventilation, deep mine ventilation, and in ejector-type pneumatic transport systems and other technological installations.

Manufacturing Variants of Centrifugal Fans VC 6-28 (VR 120-28) #11,2

- Carbon steel;
- Stainless steel (custom order);
- Heterogeneous metals (custom order).

Design and Operating Principle of the High-Pressure Centrifugal Fan Series VC 6-28 (VR 120-28) #11,2 with Electric Motor Electric motor AIR 250 S4 75 Power kW 1500 Vol./Min

Air movement is achieved by transferring the rotational energy of the fan’s working impeller.

The fan VC 6-28 (VR 120-28) #11,2 with electric motor Electric motor AIR 250 S4 75 Power kW 1500 Vol./Min consists of the following main components:

- Working impeller;
- Spiral housing;
- Electric motor Electric motor AIR 250 S4 75 Power kW 1500 Vol./Min;
- Inlet nozzle;
- Bearing assembly (running gear);
- Bedplate;
- Frame;
- V-belt transmission: V-belts, driving and driven pulleys (for design No. 5);
- Tensioning device slide (for design No. 5);
- V-belt transmission guard (for design No. 5).

Working Impeller of the Fan VC 6-28 (VR 120-28) #11,2

The working impeller is of a turbine type with 16 blades. The blades are attached by electric welding to the front and rear disks. The rear disk is attached to the hub by molding. The material of the disks and blades is sheet steel, and the hub is made of gray cast iron. The impeller’s purpose is to create a vacuum in the suction zone and excess pressure in the discharge zone. The impeller can rotate in either right or left direction.

Spiral Housing of the High-Pressure Fan VC 6-28 (VR 120-28) #11,2 

The spiral housing is welded from sheet and rolled steel. The spiral housing can be designed for right or left rotation. The surfaces of the working impeller and spiral housing that come into contact with the transported medium form a flow cavity. The housing’s purpose is to shape the suction and discharge flows.

Asynchronous Electric Motor Electric motor AIR 250 S4 75 Power kW 1500 Vol./Min

The electric motor Electric motor AIR 250 S4 is a general-purpose asynchronous three-phase motor with a short-circuited rotor, designed to operate from an AC network with a frequency of 50 Hz and voltage of 380/660 V. The motor Electric motor AIR 250 S4 has a nominal rotation speed of 1500 revolutions per minute. Dimensions (axis of rotation height): 250 mm; shaft diameter: 75 mm; power in kW: 75; climatic design: UZ; IP rating: 54. The motor housing for AIR motors with a power of 1.5 kW and above is cast from gray cast iron for reliable use. Upon request, the motor Electric motor AIR 250 S4 can be manufactured with a housing made of silumin alloy.

Housing Orientation of Radial Fans for Right (PR) and Left (LEV) Rotation, Viewed from the Suction Opening