Industrial high pressure blowers, centrifugal and axial blowers, high temperature fan ventilators. Sales for roof and wall exhaust and supply fan blowers, radial blower fans, tubeaxial fans.
Chicago Blower Canada - Fans, Blowers and Ventilators

Industrial backward inclined (BI) fan blower

Chicago Blower SQB Type "B" fan wheel has backward inclined blades designed to handle corrosive or dusty airstreams. Typical fan applications include: oven circulating fans, dust collector exhaust fans, fume exhaust ventilators and emissions control fan systems. Since the ventilator blades are solid steel, the "B" wheel is ideal for custom applied corrosion resistent coatings. The SQB fan is also suited for high temperature gasses and air to 650°. For greater safety in explosive environments, spark resistant ventilator construction is offered. The versatile SQB blower is furnished in 14 sizes in Arrangements 1, 9 or 9H and in three classes of construction.

Chicago Blower's SQB blower is regarded as a high performance, trouble free fan proven in a myriad of industrial air moving applications. With its backward inclined wheel blades and square fan housing design, the SQB ventilator is efficient, economical and versatile. It is also quickly available through Chicago's Stock Fan program. "Packaged" fans, those furnished with motor, V-belt drive, belt guard and other options, are factory aligned, run tested and shipped ready to install. By eliminating jobsite assembly, the packaged SQB fan can substantially reduce overall installation cost.













Design of industrial process and OEM fans, heavy duty process ventilators, baghouse fans, low leakage fans and blowers, fan / blower impellers, airfoil fans, acoustafoil ventilators, unifoil fans, plant ventilation fans, explosion proof building ventilation fans, TCF twin city ventilators, Sheldons engineering blowers, conveying blowers, air tight blowers & fans, industrial process air curtains, OEM fans / blowers, fume exhausters, dust collectors.
Aside from the small squirrel cage blowers used on some electrical equipment, the most common blowers of this type are the units used for drying carpet after cleaning or a fire, the blowers used for leaf sweeping and the unit hidden inside a vacuum cleaner.
In the aial flow ventilator the air must blow in line with the axis of rotation and there must be blades with space between them.  With few exceptions, the axial blower or fan must not have a lot of back pressure and will work a lot better if the blade is shrouded.  One obvious exception is the turbine compressor used in jet engines, but this requires very tight fittings and very high speed so the air is being rammed in against the outgoing air much faster than it can move - it uses a lot of power and makes a lot of noise.  Shrouding works better because the greatest loss in an unshrouded fan is the air coming off near the tips and immediately turning out and back circulating only through the fan and not through the room. The most common shrouded fan people see is muffin style fan in computers.  An axial blower can have multiple sets of blades and the blades can even over lap so light is not visible through the fan.  Fans are used most often for moving large quantities of air between spaces at atmospheric pressure.