A blower fan works by using a rotating impeller (or rotor) to create a pressure difference that moves air.
Here's a breakdown of the process:
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Creating a Vacuum: The blower fan's central component is the impeller, which has blades. As the impeller rotates, it forces air outwards, creating a low-pressure area (a partial vacuum) at the center.
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Air Intake: The vacuum draws air into the blower housing through an inlet. The air flows towards the center of the rotating impeller.
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Centrifugal Force: As the air enters the impeller, it is caught by the rotating blades. The rotating blades then spin air and use centrifugal force to accelerate the air outwards.
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Increasing Air Speed and Pressure: The centrifugal force not only increases the air's speed but also its pressure. The air is effectively "thrown" outwards from the center of the impeller.
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Discharge: The pressurized air is then directed out of the blower through an outlet, typically a duct or nozzle. The shape of the housing surrounding the impeller helps to guide the airflow and further increase pressure.
In summary, a blower fan uses a rotating impeller to draw in air, accelerate it using centrifugal force, and then discharge it at a higher pressure.
