What is the solution for a buzzing car air conditioning blower?
1 Answers
If your car's air conditioning blower is making a buzzing noise, it may be due to insufficient lubrication in the blower bearings or the presence of foreign objects inside the blower. The solution is to add lubricating oil to the blower bearings. If the buzzing is caused by foreign objects, simply remove them. If the issue persists after trying these methods, consider replacing the blower with a new one. More details are as follows: 1. Components of the air conditioning system: The car air conditioning system includes the compressor, dryer, evaporator, high and low-pressure pipes, and expansion valve. Typically, the air conditioning cycle involves four processes: compression, condensation, expansion, and evaporation. Ordinary air is transformed into low-temperature, low-pressure gas through these processes, and the blower's role is to direct this gas through the air vents, providing a refreshing breeze. 2. Blower introduction: Located in the engine compartment behind the dashboard. The blower mainly consists of six parts: motor, air filter, blower body, air chamber, base (also serving as an oil tank), and oil drip nozzle. The blower operates via an eccentrically placed rotor in the cylinder, with the volume between the rotor's vanes changing to suck in, compress, and expel air. During operation, the pressure difference automatically delivers lubrication to the oil drip nozzle, which drips into the cylinder to reduce friction and noise while preventing gas backflow. This type of blower is also known as a sliding vane blower.
