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2. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   In other countries, ceiling fans usually come with a warning to install the fan so that the blades are 2.3 meters above the floor or higher, as instructed by the IEC and similar bodies. This rule applies to all "high level fans" [ 23 ] including but not limited to ceiling fans.

3. High-volume low-speed fan - Wikipedia

   en.wikipedia.org/wiki/High-volume_low-speed_fan

   A High-volume low-speed fan. A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. [1] HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."

4. Talk:Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Talk:Ceiling_fan

   Anyhow, to answer your question -- there are no differences between regular (36"-56", 3/4-blade) "industrial" fans and regular (29"-60", 2to6-blade) "residential fans" as described in the article. The fact that the styling is different is irrelevant to method of operation, theory of operation, parts, performance, et cetera.

5. Fan (machine) - Wikipedia

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

   Five-blade or six-blade designs are rare. The materials from which the components are made, such as brass, are important factors in fan desirability. A ceiling fan is a fan suspended from the ceiling of a room. Most ceiling fans rotate at relatively low speeds and do not have blade guards because they are inaccessible and unwieldy.

6. Industrial fan - Wikipedia

   en.wikipedia.org/wiki/Industrial_fan

   Backward inclined – These fans have simple flat blades, backwardly inclined to match the velocity pattern of the air passing through the fan wheel for high-efficiency operation. These fans are typically used in high-volume, relatively low-pressure, clean air applications. Radial blade – The flat blades of this type are arranged in a radial ...

7. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   Figure 1: Components of a centrifugal fan An external motor belt driven inline centrifugal fan discharging inline to the exterior of a building through a duct. Unlike non-inline/non-concentric impeller casing design with a cutoff blade above, the concentrically symetric cylinder casing and impeller geometry of inline type redirects the outflow around so that it is parallel to the inflow of gases.