VARIABLE BLADE TYPE OF AN OIL PUMP COOLING-FAN, CAPABLE OF MINIMIZING NOISE DUE TO A COOLING FAN BY REDUCING THE AREA OF A VENT MAINTAINING A COOLING FUNCTION AT A LOW-SPEED AREA

摘要

PURPOSE: A variable blade type of an oil pump cooling-fan is provided to enhance pump efficiency, improve fuel efficiency and increase the lifespan of a pump.;CONSTITUTION: A variable blade type of an oil pump cooling-fan comprises a ventilation control unit. The ventilation control unit is fastened to the pulley shaft of the pulley of an oil pump receiving power from an engine and increases the open area of an air intake hole to increase air volume inhaled to the pulley if centrifugal force increases according to the increase of the rotating speed of the pulley. The ventilation control unit comprises a blade(6), an elastic member and a blade tilt end. The blade is formed on a fan housing(5) coupled to a fan axis(4) rotating through the pulley shaft to inhale air.;COPYRIGHT KIPO 2011