Commercial Exhaust Fans

 

A commercial exhaust fan is suited for high usage applications needing high capacity. Commercial exhaust fans have the ability to run continuously while maintaining a consistently good airflow.

Industrial fans are machines whose primary function is to provide and accommodate a large flow of air or gas to various parts of a building or other structures. This is achieved by rotating a number of blades, connected to a hub and shaft, and usually driven by an electric motor or turbine. Commercial exhaust fans fit into this category.

Despite its name, a commercial fan can be used in domestic right up to industrial environments depending on the situation and its requirements.

There are many uses for the continuous flow of air or gas that industrial fans generate, including exhaust, cooling, air-cleaning, and drying, combustion, ventilation, aeration, particulate transport, to name a few.

Exhaust fans work by sucking hot or humid air out of a small, localised area, allowing fresh air to enter from elsewhere (perhaps a doorway or vent) in order to replace it. The warm air that’s drawn out using an exhaust fan is then pulled through a ducting system and expelled outside.

Most commercial exhaust fans may be categorized into one of two general types: centrifugal fans and axial fans.

An axial-flow fan has blades that force the air to move parallel to the shaft around which the blades rotate. For a centrifugal fan, the air flows in on a side of the fan housing. The air then turns 90 degrees and accelerates due to centrifugal force as it flows out of the fan blades and exits the fan housing.

There are several means of controlling the flow rate of an industrial fan that can be applied to both centrifugal and axial fans – eg: temporarily reducing the air or gas flow rate.

Industrial exhaust ducts are pipe systems that connect hoods to industrial chimneys through other components of exhaust systems like fans, collectors, etc. Ducts are low-pressure pneumatic conveyors to convey dust, particles, shavings, fumes, or chemical hazardous components from air in the vicinity to a shop floor or any other specific locations like tanks, sanding machines, or laboratory hoods.

For many years, residential, commercial, and industrial end-users considered natural ventilation the only way to provide a path for contaminated air or water vapour to exit enclosed spaces.

However many industries are now extensively replacing traditional ventilation systems with newly developed advanced ventilation systems. These new commercial exhaust systems including brushless D.C. motors that offer low noise and high energy efficiency. The most common ventilation fan chosen is an axial ventilation fan – due to its wide range of applications such as: cooling fans, wind tunnels, ceiling fans, computer cooling, automobiles, and ventilation exhaust fans.

Ventilation commercial exhaust fan type can be segmented into:

• centrifugal fans,
• axial fans,
• cross-flow fans,
• domestic exhaust fans,
• power roof fans,
• range hood fans.

 

At National Motor Rewinds – we supply, install and repair Commercial Kitchen Exhaust Fans. Call us today!