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francisair
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Join Date: Aug 2012
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Ceiling Fan Speed

08/28/2012 5:35 PM

How can I increase my fan speed without buring up the motor?
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Doorman
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#1

Re: ceiling fan speed

08/28/2012 5:39 PM

Remove the fan blades.

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SolarEagle
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#2

Re: ceiling fan speed

08/28/2012 5:53 PM

Variable Frequency Drive...

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jack of all trades
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#3

Re: ceiling fan speed

08/28/2012 6:07 PM

Some sort of gearing system.

The simplest of which would be a belt driven gear, but you would need to move the fan blades and manufacture another support shaft

Link

Likely too expensive for your application thou.

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JRaef
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#4

Re: Ceiling Fan Speed

08/28/2012 7:07 PM

CAUTION

A Ceiling fan will be a centrifugal fan, so the load on the motor will increase at the CUBE of the fan speed change. For example if you increase the fan speed by 25%, the motor loading will increase to 1.253, or 195%. So if you have a 1/4HP (186.5W) motor as is typical in many ceiling fans, the LOAD on that motor will become almost 1/2HP (364W) and the motor will burn up, or trip off line if you are lucky and the motor has thermal protectors built-in. But some do not, so the dumb animal fan motor will try to push that extra air until it dies / fries.

So how can you increase your fan speed? Buy a faster fan with a bigger motor designed to move more air.

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durtieduck
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#5
In reply to #4

Re: Ceiling Fan Speed

08/28/2012 9:39 PM

i agree. shorter fan blades would defeat the purpose also. more efficent fan blades would'nt be a practical solution. there's no free ride.

the motor windings are specifically wound for three speeds and a certain power output

the obvious solution is to replace the fan with one that has a higher wattage rating and a higher cfm circulation factor.
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francisair
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#6

Re: Ceiling Fan Speed

08/28/2012 11:37 PM

Thank you for your input. I'll need to get a new fan!!!
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Doorman (1); durtieduck (1); francisair (1); jack of all trades (1); JRaef (1); SolarEagle (1)

Previous in Forum: Line Losses Percentage   Next in Forum: Is it possible to Use Super Capacitors to Increase a Li-Ion Battery's Run Time?

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