Background information of a mechanical fan


Common Functions
- A device used to produce an airflow for the purpose of creature comfort, ventilation, exhaust, or any other gaseous transport
- It can be any revolving vane or vanes used for producing currents of air
- It produces airflows with high volume and low pressure
- A fan blade will often rotate when exposed to an air stream

Typical applications
- Climate control, cooling systems, personal comfort, ventilation, winnowing, removing dust, etc
- It can also be an air fresheners, by attaching fabric softener sheets to the protective housing
- The fragrance to be carried into the surrounding air

History
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- The first recorded mechanical fan was the punkah fan used in the Middle East in the 1500s. It had a canvas covered frame that was suspended from the ceiling. Servants pulled a rope connected to the frame to move the fan back and forth
- The Industrial Revolution in the late 1800s introduced belt-driven fans powered by factory waterwheels, attaching wooden or metal blades to shafts overhead that were used to drive the machinery, the first industrial fans were developed
- One of the first workable mechanical fans was built by A.A. Sablukov in 1832. He called his invention a centrifugal fan (image on the right)
- The personal electrical fan was introduced in the late 1800s and early 1900s for the public
- Dr. Schuyler Skaats Wheeler developed the 2-bladed desk fan, a type of personal electric fan between 1882 and 1886
- Philip H. Diehl introduced the electric ceiling fan in 1882. Diehl is considered the father of the modern electric fan

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