VEHICLE CAB ENCLOSURE WITH VENTILATION MEANS

摘要

A vehicle cab enclosure has a forced air ventilation system including a horizontally arranged intake and filter. The cab is otherwise relatively air tight so that sudden closing of the cab door causes a reverse flow of air through the filter and a loosening of particles thereon. The ventilation system also includes a central air plenum chamber connecting a blower with a pair of side chambers having vents into the cab interior. Heat exchanger means can be provided as can recirculation means.