Centrifugal Blower By Tyagi Air-wave Equipments Pvt. Ltd.

Centrifugal Blower
Centrifugal Fans Forward / Backward Curve Centrifugal Fans (Belt Drive)

Air Wave Single and Double Inlet  Belt Driven  Centrifugal Fans have Forward Curve
Wheels and  have  been specially designed and  developed  for Air 
Handling  Units (AHU's), Packaged Air Conditioners, Evaporative
Cooling Systems and General Purpose Industrial and Commercial
Ventilation Systems.The currently available sizes are from 9" dia. to
18" dia. in DIDW "BAT" series and SISW "SAT" series and upto
630 mm dia. in standard  metric series "FBDF" (DIDW, square outlet)
and "FBSF" (SISW) with capacities upto 18000 CFM  and   static 
pressure upto 60 mm  of water.



Salient Technical Features
The Hallmark of Air-Wave Fan is Precision. This  has been achieved 
using die-formed sheet metal components  be it  the impeller, housing
baffle, bearing  support  brackets etc.. The advantages are light 
weight, compact  design, low-noise vibration-free operation, higher
operational speeds, low motor  power and lower costs.



 The BLOWER WHEEL is made from high quality rust resistant galvanized
sheet steel  and  has  forward  curved  blades.  A large forged steel
or die cast aluminium hub  with  a  precisely machined  bore and  a 
keyway is  fitted  to  the wheel  backplate.  Use  of  precision 
tooling for the punching  and  assembling of wheel components  results
in  extremely  low  levels of eccentricity and  run out. The wheel  is 
statically  and  dynamically  balanced to balance quality grade G 6.3
of  ISO 1940 standard.
The FAN HOUSING is also made from high quality rust  resistant 
galvanized  sheet steel  with  the  housing  wrapper  fixed  to the 
side  plates using Pittsburg  Lock.  This method of locking is 
superior to spot welding as it is  leak proof  and  provides better
rigidity. Side plate profiles are cut on CNC machines which results in
proper centering  of the Impeller-Shaft assembly and precise overall
fan dimension. Aerodynamically  shaped inlet  venturies form an 
integral part  of  the side  plates.
The FAN SHAFT is manufactured  from high quality EN9 carbon  steel
with  keyways at  both ends (for pulleys) and at the centre (for  wheel
hub) and is ground  to close tolerance for precision fit.
The WHEEL- SHAFT ASSEMBLY is  supported   at  both  ends  in  imported 
pre-greased permanently sealed  ball bearings  with an eccentric
locking collar. Each  bearing  sits  inside a  moulded  rubber 
housing  which  in turn is  mounted  on  to the  Fan  Housing using a
set of  4  specially designed  die-formed  sheet steel  brackets  on 
each  side. After  assembly, the shaft is coated  with a fine layer 
of  anti-corrosion  laquor.
RECTANGULAR  SIDE FRAMES made from  G.I. sheets  are  bolted  to the 
Fan Housing. This improves Fan  rigidity and  strength and allows
mounting of  the  fan in various orientations.