HPC Products And Korfmann - Mine And Tunnel Fans

Axial Flow Fans - Type AL

Axial flow fans of type AL with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high efficiency.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, steel housing, mounting claws, impeller of Silumin.
Application
Industry, tunnel and gallery ventilation, without requirement of explosion- or flame-proofness, with big volume.
Power
Volume flow up to 100 m3/s, overall pressure up to 3000 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, type of protection IP 55, isolation class F, tropic-proof, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type AL(N)

Low-pressure fans of type AL(N) with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high efficiency.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, steel housing, footing, impeller of Silumin.
Application
Industry, tunnel and gallery ventilation, where explosion- or flame-proofness is not required. Flexible use of the fan at construction sites, e.g. refurbishment of tunnels. As open-jet fan or for short pipelines.
Power
Volume flow up to 16 m3/s, overall pressure up to 1100 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades
Drive
Three-phase squirrel-cage motor, special design, type of protection IP 55, isolation class F, tropic-proof, outside safety switch.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type dAL

Axial flow fans of type dAL with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high efficiency. Drive motor totally enclosed, explosion and flame-proof.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, flame-proof, steel housing, mounting claws, impeller of Silumin, ring of Silumin or brass.
Application
Industry, tunnel and gallery ventilation as well as mining ventilation where flame-proofness is required, with big volume.
Power
Volume flow up to 100 m3/s, overall pressure up to 3000 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, explosion-proof, pressure-proof housing “d” or “de” acc. to DIN EN 50018, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type dAL(N)

Axial flow fans of type dAL(N) with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high efficiency. Drive motor totally enclosed, explosion- and flame-proof.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, flame-proof, steel housing, footing, impeller of Silumin, ring of Silumin or brass.
Application
Industry, tunnel and gallery ventilation as well as mining ventilation where flame-proofness is required. Flexible use of the fan at construction sites, e.g. refurbishment of tunnels for methane drainage.
Power
Volume flow up to 16 m3/s, overall pressure up to 1100 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, explosion-proof, pressure-proof housing “d” or “de” acc. to DIN EN 50018, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type ESN

Axial flow fans of type ESN with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high pressure rates and efficiency.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, steel housing, impeller of Silumin.
Application
Tunnel and gallery ventilations in areas where nobody has to expect the occurrence of flammable atmosphere caused by gas.
Power
Volume flow up to 20 m3/s, overall pressure up to 3500 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motors, special design, protection type IP 55, isolation class F, tropic-proof, terminal box outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type dESN

Axial flow fans of type dESN with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high pressure rates and efficiency.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, steel housing, explosion-proof, impeller and ring of Silumin.
Application
Industry, tunnel and gallery ventilations, in potentially explosive surroundings.
Power
Volume flow up to 20 m3/s, overall pressure up to 3500 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, explosion-proof, pressure-proof housing “d” or “de” acc. to DIN EN 50018, terminal box outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type ES

Axial flow fans of type ES with excellent aerodynamical characteristics. The exact profile of the rotating blades ensures high pressure rates and efficiency.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, steel housing, explosion-proof, impeller and ring of Silumin.
Application
Mining, in explosive surroundings.
Power
Volume flow up to 20 m3/s, overall pressure up to 3500 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, explosion-proof, pressure-proof housing “d” or “de” acc. to DIN EN 50018, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type EST

EST fans combine the advantages of electric and compressed-air drive. The compressed-air drive is preferably used in case of emergency, e.g. power failure or if limiting values of explosive gas mixtures are exceeded suddenly.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, flame-proof, inlet and exhaust housing of Silumin.
Application
Tunnel and gallery ventilations, in explosive surroundings as well as compressed-air drive in case of increased occurrence of methane gas. Drive in combination.
Power
Volume flow up to 17 m3/s, overall pressure up to 3000 Pa.
Control
Pole-changing motors, infinitely variable speed. Continuously variable by regulating the air pressure and the number of driving nozzles.
Drive
Three-phase squirrel-cage motor, special design, explosion-proof, pressure-proof housing “d” acc. to DIN EN 50018, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type GAL

Contra rotating high-pressure fans provide high pressures at efficiency rates of up to more than 90% in both gratings because of interesting flow processes. Simple construction without guiding wheel, including two drive motors.

Type Of Construction
Two contra rotating axial impellers, profiled rotating blades, steel housing, mounting claws, impeller of Silumin.
Application
Industry, tunnel and gallery ventilation, where flame- or explosion-proofness is not required, but working under high pressures.
Power
Volume flow up to 45 m3/s, overall pressure up to 6000 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, type of protection IP 55, isolation class F, tropic-proof, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type dGAL

Contra rotating high-pressure fans provide high pressures at efficiency rates of up to more than 90 % in both gratings because of interesting flow processes. Simple construction without guiding wheel, including two drive motors.

Type Of Construction
Two contra rotating axial impellers, profiled rotating blades, steel housing, impeller of Silumin, ring of Silumin or brass.
Application
Industry, tunnel and gallery ventilation as well as mining ventilation where flame-proofness is required, as well as working under high pressures.
Power
Volume flow up to 45 m3/s, overall pressure up to 6000 Pa.
Control
Pole-changing motors, infinitely variable speed, individually adjustable blades.
Drive
Three-phase squirrel-cage motor, special design, explosion-proof, pressure-proof housing “d” or “de” acc. to DIN EN 50018, terminal box inside or outside.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type DV

Turbine fan with compressed air as kind of drive. Impeller and impulse turbine of high-quality Silumin form a whole. By changing the volume of compressed-air, the power is continuously adjustable. Turbine fans are preferably used in mining and potentially explosive areas.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, flame-proof, inlet and exhaust housing of Silumin, turbine ring of brass or steel.
Application
Ventilations, where flame-proofness is required at compressed-air supply.
Power
Volume flow up to 15 m3/s, overall pressure up to 2000 Pa.
Control
Continuous control of the drive pressure.
Drive
Impulse turbine at the impeller circumference, operating pressure 4-6 bar.
Paint Coat
Pure white (RAL 9010).

Axial Flow Fans - Type KGL

Large fan for large yields of mines. Drive by means of cardan shaft outside of the motor. Power regulation by speed adjustment and/or adjustable blades.

Type Of Construction
Axial impeller with guiding device, profiled rotating blades, steel housing, footing, motor arranged outside, drive by means of cardan shaft.
Application
Big fan used in big caverns and mines.
Power
Volume flow up to 180 m3/s, overall pressure up to 4000 Pa.
Control
Pole-changing, infinitely variable speed.
Drive
Three-phase squirrel-cage motor, special design depending on the location and area.
Paint Coat
Pure white (RAL 9010).

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