The Shutter is traditionally the weak point in Conventional fans.
But in this fan shutter the system which utilizes centrifugal energy
generated by propeller to open the shutter has the following advantages :
Counter weights are not required.
Shutters are always fully opened when fan is operating and are not affected by wind or dust accumulations.
Shutters will not stick or hang if they are not periodically cleaned.
Shutters are tightly closed when fan is not operating.
Because shutters are fully opened when the fan is operating shutter pressure drop is minimized.
Shutter waving never occurs.
Shutters are in galvanized steel, which is much stronger than ordinary aluminium shutter fan
The propeller has been designed to maximize air flow while minimizing energy usage.
The round unique blade profile helps keep the propeller clean. It has the lowest propeller
venturi clearance which results in higher efficiency and lower air turbulence. An energy
efficient motor incorporates the highest standard for insulation and protection. It will
even operate even on low voltage.