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2. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   Centrifugal fan. A typical backward-curved centrifugal fan, in which the blades curve away from the direction in which they rotate. A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific ...

3. Industrial fan - Wikipedia

   en.wikipedia.org/wiki/Industrial_fan

   Industrial fan. Industrial fans and blowers 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 driven by a motor or turbine. The flow rates of these mechanical fans ...

4. Axial fan design - Wikipedia

   en.wikipedia.org/wiki/Axial_fan_design

   Axial fan design. An axial fan is a type of fan that causes gas to flow through it in an axial direction, parallel to the shaft about which the blades rotate. The flow is axial at entry and exit. The fan is designed to produce a pressure difference, and hence force, to cause a flow through the fan. Factors which determine the performance of the ...

5. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A table fan. A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing, or case. [1]

6. List of Dyson products - Wikipedia

   en.wikipedia.org/wiki/List_of_Dyson_products

   The Dyson "Air Multiplier" was announced in October 2009 as an electric fan, intended to provide smoother airflow and, having no exposed rotating blades, operating in a safer manner than conventional fans. [39] [40] While it is described as a "bladeless" fan, it has blades inside its base. The fan works by drawing air in through an inlet in the ...

7. Dust collector - Wikipedia

   en.wikipedia.org/wiki/Dust_collector

   Although they are noisier than radial-blade fans, backward-blade fans are commonly used for large-volume dust collection systems because of their higher efficiency. Forward-curved-blade fans - These fans have curved blades that are tipped in the direction of rotation. They have low space requirements, low tip speeds, and a low noise factor.