An air filter has a filter housing having a raw air inlet and further has a filter element arranged in the filter housing. The filter element has a filter medium body and an end disk with a central primary air passage and a secondary air passage. The filter medium body annularly surrounds a longitudinal axis of the filter element and separates a raw side in the filter housing from a clean side inside the filter element. The filter housing has a primary air outlet communicating through the primary air passage with the clean side of the filter element. The filter housing has a secondary air outlet communicating through the secondary air passage with the clean side of the filter element. The secondary air outlet communicates with the secondary air passage through a channel arranged at the filter element, wherein the channel surrounds the primary air passage annularly and coaxially.

An air filter has a filter housing having a raw air inlet and further has a filter element arranged in the filter housing. The filter element has a filter medium body and an end disk with a central primary air passage and a secondary air passage. The filter medium body annularly surrounds a longitudinal axis of the filter element and separates a raw side in the filter housing from a clean side inside the filter element. The filter housing has a primary air outlet communicating through the primary air passage with the clean side of the filter element. The filter housing has a secondary air outlet communicating through the secondary air passage with the clean side of the filter element. The secondary air outlet communicates with the secondary air passage through a channel arranged at the filter element, wherein the channel surrounds the primary air passage annularly and coaxially.

A mist collection and separation assembly is disclosed for improved operability and maintainability. The assembly includes a rotor disposed concentrically within a housing and powered by an electrical motor that generates suction, drawing mist from a target environment into a rotor interior cavity. The mist impacts a rotor surface and reverses direction, causing liquid and potential particulate content to separate due to inertia. Separated matter drains through designated housing ports, while clean air is exhausted. The assembly operates filter-free, reducing maintenance and cost. Vertical orientation enhances separation via gravity, and grooved rotor surfaces facilitate drainage. Wetted internal housing surfaces enable passive self-cleaning through molecular adhesion of submicron particles. Optional removable filters may be included for improved reliability.