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What is the function of the small fan at the car air vent?

2 Answers

DiZane

07/29/25 10:02pm

The function of the small fan at the car air vent is to disperse the airflow in various directions or to direct it in a single direction. Below is a related introduction to car fans: Location: The car fan blows towards the radiator to cool it down and dissipate heat from the engine. It should not blow towards the engine as this would increase the engine's temperature. The fan is installed behind the radiator and shares the same axis as the water pump. Classification: Fans used in car engines are categorized by their structural principles into axial flow fans and centrifugal fans. Based on their driving mechanisms, they are classified into mechanically driven and electrically driven fans. Modern car engines widely use electrically driven centrifugal fans.

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DelBriella

08/15/25 10:02pm

That small vent fan is quite practical. While driving, it precisely adjusts the airflow direction, blowing cool or warm air directly onto you, quickly cooling you down in summer and warming you up in winter. I noticed during long drives that it helps maintain even cabin temperature and prevents windshield fogging that could obstruct vision. With improved air circulation, driving becomes more comfortable and less stuffy. Additional benefits include preventing clogged AC vents and reducing odors. Regularly cleaning the vents with a soft brush can extend the fan's lifespan. Don't underestimate its size—it significantly impacts driving safety and daily experience. Owners should pay attention to maintenance details to ensure smooth airflow and avoid energy waste.

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