Patent ID: 6425943
Filing Date: 2002-07-30
Classification: B01D,B04C,B60H,F02M,Y02A

Abstract:
A powered air cleaning system for separating heavier-than-air particulate debris from debris laden air to provide a clean air flow, comprising:a flow path extending through the system from an inlet to an outlet; a fan located along the flow path to draw debris laden air into the inlet and rotate it about an axis to form a rotating flow pattern that stratifies the debris laden air with the most massive particles of debris in the outermost orbits of the rotating flow pattern; a first particle separation region in the flow path where the most massive particles of debris are centrifugally separated and removed from the flow to clean the air; a reduced cross sectional area portion in the flow path downstream of the first particle separation region to accelerate the clean air flow to induce momentum forces to any remaining debris in the clean air flow; and a second particle separation region in the flow path downstream of the reduced cross sectional area portion where remaining debris is centrifugally separated and removed from the flow to further clean the air.