An air quality system includes an air precleaner, a filter identification component, and a control module. The air precleaner has a precleaner housing and a filter disposed inside the precleaner housing. The filter identification component is positioned within the precleaner housing at a first position and is mounted on the filter. The control module is positioned within the precleaner housing at a second position and is configured to emit an electrical field and communicate with the filter identification component via the emitted electrical field.

A smart multi-modal vehicular air filtration management system including a first filter element and a second filter element disposed in a fresh air housing, wherein the fresh air housing has an inlet and an outlet. Additionally, a third filter element is provided which is disposed in a cabin housing, the cabin housing having one or more inlet. A fluid channel arranged between the fresh air and cabin housing. Finally, a diverter is included which is disposed near an outlet of the fresh air housing, wherein the diverter is configured to cause air to flow through the fresh air housing selectively through one or both of the first filter element and the second filter element.

A mobile mining machine includes a base, a main housing supported on the base, and an air filtration unit configured to provide filtered air to the main housing. The air filtration unit includes a dirty air inlet, a filtered air outlet, and a filter chamber disposed fluidly between the dirty air inlet and the filtered air outlet, the filter chamber housing a filter element. The dirty air inlet is positioned vertically below the filter chamber.

A ram air vent for a vehicle has a base defining a base aperture therein; a hood connected to the base over the base aperture, the hood and base defining a forwardly facing air inlet therebetween, the hood and the base defining an air passage extending from the air inlet to the base aperture; a baffle disposed in the air passage for deflecting air flowing in the air passage from the air inlet for separating water from air flowing in the air passage, the baffle facing the air inlet; and at least one water passage defined in at least one of the base or the hood. The at least one water passage exits a rear side of the ram air vent. The at least one water passage drains water separated from air flowing in the air passage from the ram air vent.

An improved air exhauster for a vehicle is provided, comprising a non-woven filter with a covering sheet of material fastened to the filter face. The filter may be assembled into a frame and the covering sheet may acts as valve to allow air outflow from the interior of the vehicle, yet restrict outside noise from entering. The covering sheet may be a relatively more dense non-woven material than the filter or may be a polymer film. The covering sheet may be attached at the centerline of the filter to function as a pleat separator and reduce the incidence of pleat collapse under high flow rate or increased pressure drop.

A vehicle comprising a passenger cabin and an air conditioning system is disclosed. The air conditioning system comprises a Peltier device, a first blower for directing a first airflow over a first side of the Peltier device, and a second blower for directing a second airflow over a second side of the Peltier device. The second blower draws the second airflow from inside the passenger cabin, and the second airflow is discharged to outside the passenger cabin.

An operator's compartment has an internal space. A case has an internal space in communication with the internal space of the operator's compartment. An air conditioning unit is disposed in the internal space of the case and has an internal-air supply port which introduces air from the internal space. An internal-air filter is attached to the internal-air supply port.

There is described a HVAC pre-filter system for a vehicle. The pre-filter system acts to prevent relatively large or coarse debris from reaching a dedicated HVAC filter through the use of at least one pre-filter element, which is provided in at least one inlet/outlet connected to ambient air. The pre-filter system has an inlet to supply air to the HVAC system, and an outlet to allow for air to exit from a vehicle cab interior, and the inlet/outlet can be switched to be fluidly coupled with either the HVAC inlet or the cab outlet. Dependent on which inlet or outlet the inlet/outlet is coupled with, the flow direction in the inlet/outlet can be controlled. Accordingly, the pre-filter can be cleaned of accumulated dust and debris by reversing the direction of airflow through the inlet/outlet.

A dust reduction unit for a recreational vehicle has a body adapted to be affixed through a side wall of the recreational vehicle, an external vent in the body, fan within the body to draw air through the external vent and into the recreational vehicle and a filter within the body to catch dust before air passes into the recreational vehicle. The unit is characterized in that the external vent has collection wells for any water which may ingress into the vent, and drains connected to the wells so that water can escape the unit. The external vent has a grille on one of its sides for air intake and the external vent can be rotated with respect to the body so that the unit can be affixed on the left- or right-hand side of the recreational vehicle, which is useful for installation on recreational vehicles in any country.

An air treatment system is described, for a closable room of a vehicle, comprising: an air conditioning device provided with a fan and connectable to the room; an inlet opening for outside air, connected to the air conditioning device; a filtration device for filtering the outside air entering from the inlet opening; a recirculation port; a valve assembly provided with a shutter member, interposed between the inlet opening, the recirculation port and the air conditioning device and movable between a plurality of operating positions, in which it varies the shares of air coming from the inlet opening and the recirculation port; and a control unit to adjust the operating position of the shutter member so as to control the shares of air being drawn from the inlet opening and from the recirculation port and to maintain a predetermined value of overpressure in the room with respect to the outside.