OLEG BLOWER COMPANY

Fans and Blowers   Panel Fans Portable Ventilating Fans Pedestal Air Circulators Tubeaxial Fans Vaneaxial Fans Power Roof Ventilators Centrifugal Wall or Roof Mount Ventilators Centrifugal In-line Fans Centrifugal Fans Industrial Fans Plug Fans Utility Fans Pressure Blowers  Special Products      Centrifugal Fans Roof and wall exhausters, ventilating and air-conditioning equipment, pressure blower HVAC, heating ventilation and air conditioning, industrial process and OEM blowers. Designed and built with higher pressure fan wheels than axial flow fans. Centrifugal fans operate at elevated pressures but with lesser air volume  compared to axial flow fans. There are three basic fan wheels: the forward curved, backward curved, and the radial blower wheel make up the family of the centrifugal flow fans. Forward curved centrifugal fans - centrifugal  fans with blades pointing in the direction of the fan rotation. Due to the large volume and high pressure delivery of forward curved fans, these fans are very compact and operate at low speed that ensures quiet fan operation. Typical applications are: heating and air-conditioning, ventilation, and other HVAC systems requiring quiet operation with large volume of air to be moved at high pressures. Backwardly curved centrifugal fans - centrifugal flow fans with blades inclining backward from the direction of wheel rotation. This type of fan wheel have to be operated at higher speed in order to achieve the same volume and pressure as the forward curved fans of the same size. The main advantage of the backwardly curve fan is its non-overloading performance curve characteristics. Radial blade fans - with the same wheel diameter size as the forward and backwardly inclined fans, the radial fans develop the least volume. Pressure is higher than the backward curved but lower than the forward curved fans. This type of fan find wide use in high pressure and high temperature industrial process applications.

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Air curtains by CANADA BLOWER provide a controlled stream of air across a building entrance or doorway to separate interior atmosphere from exterior environment. Air curtain’s airstream prevents cold, hot, or humid outdoor air, as well as insects and dust, from infiltrating the inside the building. This is why Air Curtains are considered as the first line of defense for employee safety.

Although air curtains require power to run the blowers and heaters, Air Curtains save much more costs by reducing drive-thru time, window wind fume hazard, providing low-first cost and low total cost as well as additional energy savings in energy battle.

Canada Blower Air Curtain Comstruction typically an air curtain will incorporate double width blower, belt, or direct driven, heating / cooling coils, or a gas fired coil, electrical controls, such as door plunger switch, speed controller, disconnect switch, and others, and mounting accessories, such as mounting brakets for suspended, or verhead mount.

Design Consdierations: To properly design an air curtain application the airstream must hit the floor with enough velocity to create a stable split right at the doorway. Design criteria for selection of proper air curtain for a given application include height and width of the door opening, intended usage, required characteristics of the airflow, which are combination of velocity, volume, and uniformity and the proper balance between each.

Once an air curtain is activated, it creates a split which uses the internal pressure to resist infiltration of temperature, rain, wind, debris, insects, etc. among the conditioned indoors and unconditioned outdoors air.

While NISCO air curtains have been commonly used for decades to separate environments in the workplace, perhaps now is the time safety professionals should consider them to help eliminate industrial/commercial doorway accidents as well as keep restaurant drive-thru employees safe from CO poisoning and wintertime temperature extremes.

Typical applications include various entrances, loading doors, hotels, hospitals, stores, public facilities, and other commercial buildings, and other applications.

Canada Blower air curtains are supplied with optional easy mounting trim key.

Check our websites for more information:

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