Patent ID: 9700828
Date: 2017-07-11
CPC Classifications: B01D

Claim:
1. A versatile compact air precleaner for separating heavier-than-air particulate debris from debris laden air to provide a clean airflow, the air precleaner comprising: a flow path extending through the air precleaner from an inlet to an outlet, a motor-driven fan with a fan blade to draw particulate debris laden air into the inlet and flow the debris laden air along the flow path, a separator chamber, air flow management structure positioned along the flow path at an inlet side of the separator chamber to rotate the particulate debris laden air drawn into the inlet about a longitudinal axis of the precleaner to form a rotating air flow that centrifugally separates and stratifies the particulate debris laden air within the separator chamber such that the heaviest particles of the debris collect in outermost orbits of the rotating air flow, at least one ejector port through which the particulate debris laden air containing the heaviest particles is ejected from the separator chamber to an outside of the air precleaner, and an end wall that closes the separation chamber at an end opposite the inlet in a direction of the longitudinal axis, the end wall being part of an end section of a replaceable air filter cartridge, the end wall causing the flow path for air passing through the separator chamber that has not been ejected as part of the particulate debris laden air ejected from the at least one ejector port to be retroflexed en route to and out of the outlet.