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Why choose D C fan?
In today's world, energy conservation and emissions reduction has become a worldwide problem, DC motor as a new technology applied to the fan, greatly improve the efficiency of the electric fan (They consume up 50% to 70% less energy and run almost silently), effective energy saving more and more convenience for the user. In some power supply tense state, DC fan and solar power system, constitute the emergency battery fan, users can in sorching summer and can enjoy by good air-flow environment.
Benefits of D C fan
(1) energy saving, compare ac electric fan, d c one can save power by 50% to 70%,
(2) the low temperature, due to the efficiency is greatly increased, the motor temperature rise is generally less than 50 k,
(3) high safety coefficient, power supply voltage is 12 v only, is far less than 36 v voltage human safety standards. In some countries can avoid doing safety standard certification.
(4) low noise, brushless motor for noise value is 50% of AC motors'
Brushed motor and Brushless motor
A DC Brushed Motor needs only physical contact to pass current through its motor windings to allow commutations.
A DC Brushless Motor needs a driver(PCBA) to commutate.
Features
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DC brushless motor
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DC brushed motor
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commutator
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Hall element
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brush
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life
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Long(7000~10000hour)
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Short(3000~5000hour)
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speed
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Can be more highter
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Normally speed
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efficiency
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high efficiency
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moderate
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heat dissipation
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Good
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Not good
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noise
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Low(<40db)
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hight Low(<60db)
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