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  • General
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    specifications
  • Advantages
  • Principle of operation

The fan is a rotor on which the blades are fixed in a certain way.  At the rotor spinning the blades encounter the air and throw it off. The direction, in which the air is thrown off, is dependent on the position and the shape of the blades. 


The centrifugal fan has a spinning rotor which consists of a spiral shape blades. The air through the inlet port is sucked up inside the rotor where it gains the rotation and at the cost of the centrifugal force and a special shape of the blades moves to the outlet port of a spiral scroll.  Thus, the outlet air flow is at right angle to the inlet one. The given type of the fan is widely used industrially.


Depending on the type, purpose and size of the fan, the number of the impeller blades can be various and the blades themselves are made either as forward-curved blades or backward-curved blades (with reference to the rotation direction).







The fans are commonly used to move the air with the aim of: room ventilation, cooling of the equipment, air-supply for combustion procedure (blowers and smoke exhausters). They also can be used in different technological processes (for instance, for pneumatic transport of bulk materials).

Model

Capacity,

kW

n,

min-1

Total pressure, kPa

Air consump-tion, m3/sec

Impeller diameter,

m

Impeller material

VC-861.01

7,5

3000

8

0,64

0,63

Aluminum

VC-861.02

11

3000

8

0,9

0,63

Aluminum

VR-6,3.01

7,5

3000

8

0,5

0,63

Steel

VR-6,3.02

5,5

3000

8

0,35

0,63

Steel

VC-9702

11

3000

8

1,0

0,63

Steel

VC-1.6.001.26

22

3000

8

1,9

0,63

Steel

VR-7,0.01

18,5

3000

10

1,15

0,7

Steel

VR-7,0.02

18,5

3000

10

1,35

0,7

Steel

Depending on the type, purpose and size of the fan, the number of the impeller blades can be various and the blades themselves are made either as forward-curved blades or backward-curved blades (with reference to the rotation direction).

The application of radial fans with backward-curved blades gives the energy saving of about 20 %.

They also easily tolerate air consumption overloads.

The advantages of radial fans with forward-curved blades of the impeller are as follows: smaller diameter of the impeller and hence smaller sizes of the fan itself and lower speed with a consequent sound reduction.



The centrifugal blower has a spinning rotor consisting of spiral shape blades. The air through the inlet port is sucked up inside the rotor where it gains the rotation and at the cost of the centrifugal force and a special shape of the blades moves to the outlet port of a spiral scroll.  Thus, the outlet air flow is at right angle to the inlet one.

The given type of the fan is widely used industrially.