Canadian Blower Duct Fans
Canada
Blower Duct Fans have been designed for low-pressure ventilation
and industrial-process applications where space is at a premium. Uses
include heat, smoke and fume removal, process drying with ambient or
preheated air; comfort and process cooling and general ventilation. All
ventilation applications can be handled in either supply or exhaust
ventilator configurations.
Numerous fan modifications and accessories make the Duct Fan suitable
for a wide range of systems. In ventilation applications where
equipment space is at a premium, the compact flow-through design of the
Duct Fan can reduce system space requirements by more than 50% over
conventional centrifugal fans. The straight, in-line design eliminates
the need for costly, space-consuming transitions, elbows, and inlet
boxes.
Additional HVAC application advantages and installed cost savings are
provided by the Duct Fan’s five predesigned ventilator mounting fan
arrangements. Canada Blower Duct Fans also utilize the same blower
housing and flange dimensions as the Tubeaxial and Vaneaxial Fan lines
allowing interchangeability due to system redesign or process
modification.
Duct Fans offer steel wheels in
all sizes. Each fan wheel is designed to maximize fan performance by
optimizing the shape, number and pitch of blades with hub diameters.
Two distinct wheel concepts are used to meet specific volume and
pressure requirements across the entire line of 12 sizes. Each Canada
Blower fan wheel is designed to provide smooth airflow performance,
minimizing the characteristic stall region typically exhibited in axial
ventilator designs.
HEAT FAN CONSTRUCTION: Duct
Fans, with heat-fan construction, are ideal for industrial oven and
dryer exhaust systems where pressure requirements are minimal and
compact, light-weight designs are advantageous. With heat fan
construction, Duct Fans are capable of handling airstream temperatures
to 350°F in ambient environments up to 120°F. For higher
temperature applications, the Duct Fan, with heat-fan construction,
induces a flow of cooler, ambient air through the belt well and inner
tube, cooling the fan's internal components. Depending on temperature
requirements, modifications include high-temperature fan wheel, special
drive components, and modifications to provide internal ambient air
cooling. Fans handling hot airstreams must have sufficient airflow and
be kept in operation until airstream temperatures cool below 120°F
to prevent damage to the fan unit. The Duct Fan's ambient air cooling
system is only effective while the fan is operating.
Canadian Blower and Forge Duct TubeAxial and VaneAxial Fans for variable volume air handling applications utilize adjustable pitch high efficiency aerofoil aluminum propellers to provide optimum performance. Buffalo Type VPS Adjustax Fans have an internal blade pitch adjustment, which allows to bring variable air volume capability for air conditioning fans, heating and ventilating applications.
Clamshell Design Vaneaxial Fans are used primarily in applications where ready access to the interior of the fan is desired. The entire bearing assembly can be removed quickly and easily from the fan, without removing the fan from the stack. Heavy duty pillow block anti-friction bearings with split inner cylinder are standard. Clamshell design vaneaxial fans are avaiable with steel wheels and aluminum wheels.
Spray Booth Design Vaneaxial Fans are available in standard belt drive arrangement 9. These fans are designed for use in spraybooth installations, or in a variety of applications where requirements make it necessary to clean the fan periodically. Standard fan accessories include: inlet / outlet cones, inlet bell, screensfor fan, cone, or bell; belt guard, weather proof motor and drive cover, spark resitant fan construction with aluminum wheels, or steel wheels with bronze tipped blades; support legs, suspension clips, shaft seals are also available as standard options.
Spark Resistant X-proof construction on tubeaxial and vaneaxial fans is available in all aluminum airstream (AMCA A) construction; aluminum wheel (AMCA B) construction; and steel wheel with bronze tipped blades and shaft retainer (AMCA C) construction.
High temperature fan construction: upon request Buffalo vaneaxial fans can be furnished with optional high temperature construction for oven exhaust, or combusting gases exhaust applications.
Corrosion resistant
construction and chemical duty construction:
for corrosive environment all vaneaxial fans are available in FRP
construction, as well as in 304 SS, 316 SS, or 316 L stainless steel
construction. Special coatings are optional and selection is made based
on the application.
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Canada Blower VSBD
vaneaxial fan is designed for highly corrosive environments and high
temperature applications where an aluminum wheel is not suitable.
Standard construction can accommodate operation to 200°F (93°C)
and can be customized to handle up to 300°F (148°C). Steel
construction is standard on this ventilator. The VSBD fan is also
available in stainless steel.
Canada Blower VSBD's steel propellers are manufactured with a spun
steel hub. Steel fan blades are welded to the hub and can be attached
at precise angles ranging from 30° to 50°.
For applications requiring extensive corrosion resistance or operation
at higher temperatures than standard, Canada Blower Arrangement 9 VSBD
/ TSBD fan is the perfect choice. Standard Canada Blower ventilator
construction is good for operation to 200°F; fans can be customized
to handle up to 300°F. Steel fan construction is standard, all
stainless steel construction is available. Driven by either a fixed or
adjustable V-belt drive system, the exact point of fan rating can be
achieved. A future change in rating can be accomplished through a
simple sheave change.
An economical in-line fan design - Canada Blower Mixed-Flow Fans.
This inline fan design develops static pressure up to 6" WG - 10"
WG, which is a range between true axial (vaneaxial) fan and
high-pressure in-line centrifugal fans. The ventilator wheel resembles
both axial and centrifugal fan impeller - "mix" of them. It has
an axial design component responsible for high air volume, and a
centrifual component for high pressure.
Canada Blower Mixed Fan sizes are similar to Axial and
Tubular-Centrifugal fans, in both belt drive and direct drive fan
desings for air volumes up to 100,000 CFM.
All fans are available in spark-resistant construction and with
explosion-proof motors.
Available Canada Blower ventilator accessories include features typical
for inline fans: inlet & outlet flanges, dampers and guards, shaft
seal, high temperature construction, drive guards, various mounting fan
arrangements, etc...