What is the function of an automotive blower?
2 Answers
The function of an automotive blower is to distribute the cold air from the air conditioning evaporator or the hot air from the heater core into the vehicle interior. Blowers can be categorized into: Roots blowers, blast furnace blowers, magnetic levitation blowers, single-stage high-speed centrifugal blowers, multi-stage centrifugal blowers, and air suspension centrifugal blowers. A blower consists of components such as an electric motor, air filter, blower body, air chamber, base, and oil drip nozzle. The reasons for sudden failure of an automotive blower include: 1. Fuse malfunction; 2. Blower relay failure; 3. Internal motor failure; 4. Power transistor or blower switch failure; 5. Wiring issues; 6. Air conditioning control unit malfunction.
Having driven a taxi for over a decade, the car blower has been my guardian angel for driving safety. Its primary function is to forcefully blow air into the cabin. In summer, working in tandem with the air conditioning, it delivers cool breezes that instantly refresh; in winter, with the heater on, warm air circulates, making the cabin as cozy as spring. On rainy days when windows fog up, turning it to maximum speed clears the fog within minutes, restoring clear visibility. I once encountered heavy rain without using the blower, and the blurred vision nearly caused a rear-end collision. Since then, I've made it a habit to start the blower at low speed as soon as I drive to keep the interior dry. Regularly cleaning the filter is also crucial, as dust buildup can weaken airflow and reduce efficiency. This inconspicuous little device ensures both comfort and safety on the road, especially during long drives or when transporting passengers—without it, driving would be nearly impossible. I often adjust the fan speed with the knob to adapt to seasonal changes, ensuring a worry-free and secure driving experience.
