An assembly having an intake connector with an air entrance for an air-conditioning system and a filter element having a concertina bellows having peripheral troughs and peripheral peaks, wherein the filter element has a water-repellent filter medium and wherein the filter element at least partially covers the air entrance, suitable for discharging snow and water, in particular snowmelt, to avoid flow into the air-conditioning system of a motor vehicle and to minimize damage to a filter element, wherein the concertina bellows is disposed so as to be inclined at an angle of 5° to 90°, preferably at an angle of 15° to 85°, in relation to the horizontal, wherein the filter element has an outflow unit for a water outflow from the peripheral troughs.

A device for air purification, incorporated into a vehicle, which comprises a case, fixed to the outside of the vehicle and having a longitudinal duct through which air passes, the air entering impure through at least one opening located in the front part, with respect to the direction of travel of the vehicle, and exiting through at least one opening located in the rear part under the suctioning effect of at least one fan disposed in the opening. From the inlet to the outlet, the air purification device successively includes the following devices: a photocatalytic reactor; a reverse microwave; an activated carbon filter; and a HEPA filter, just before the fans located in the outlet conduit.

A collective NBC filtration system (FIG. 1A) for providing positive-pressure purified air to a plurality of subjects in a protected space, or in an environment which cannot be maintained at positive pressure, in conjunction with one or more facepiece fluidly connected to the NBC filtration system. The system comprises: A casing body [102] including a first section [136] defining an inner volume therein, and a second section [138] adjacent to the first section. The second section includes an inlet port [116], The first section has a larger cross-section than the second section, and forms a peripheral first ledge [142] surrounding the second section. At least one NBC filter accommodated in the inner volume. The at least one NBC filter is supported on the first ledge [142], A lid [104] including a central portion [154] and a second ledge [152] surrounding the central portion. The central portion [154] includes a plurality of outlet ports [118], which are sealable. The lid [104] is openable to provide access to the inner volume and is securely closeable to affix the at least one NBC filter therein the inner volume by the second ledge [152], The lid [104] and the at least one NBC filter define, when the lid is securely closed, an outlet compartment there between. The outlet compartment has about the same cross-section as the second section. A blower [108] housed within the second section. A suction port of the blower being fluidly coupled to the inlet port. The system is configured such that the second section [138] fluidly couples the inlet port [116] to at least one inlet of the respective at least one NBC filter, and, when the lid [104] is securely closed, the outlet compartment [302] fluidly couples at least one outlet of the respective at least one NBC filter to the one or more outlet ports [118] but is otherwise fluidly sealed, thereby preventing potentially contaminated air from entering the outlet compartment, except via the at least one NBC filter.

A vehicle comprising, a passenger cabin, a door to the passenger cabin, and an air conditioning system is disclosed. The air conditioning system comprise a Peltier device, a blower for directing an airflow over a first side of the Peltier device and ducting for ducting air to the blower, the ducting comprising an inlet located on an underside of the door.

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.

According to the invention, there is provided a positive pressure vent for a vehicle. The vent includes an inlet chamber having an air intake port facing into an air stream generated by motion of the vehicle so as to collect air and form a positive pressure inside the inlet chamber. There is further provided a filter adapted to filter air from the inlet chamber of particulate matter. A filtered air path is further provided for allowing filtered air from the filter to travel to the interior of the vehicle under the urging of the positive pressure from the inlet chamber.

A screen assembly adapted to be removably coupled to an air filter of a construction vehicle includes a frame member including a first portion and a second portion. The screen assembly includes a screen member coupled to the frame member such that a hollow space is defined by the screen member and the frame member. The screen member includes a plurality of perforations adapted to allow passage of air therethrough. The plurality of perforations are further adapted to restrict an ingress of debris into the hollow space of the screen assembly

A working vehicle includes a cabin and an outside air inlet portion. The working vehicle further includes: a filter device having: a first filter providing a first filtering level; and a second filter providing a second filtering level that is a filtering level higher than the first filtering level; an air conditioning unit to which the outside air having passed through the filter device is supplied; and a filter changing mechanism having: a first state to allow the outside air to pass through only the first filter; and a second state to allow the outside air to pass through at least the second filter among the first filter and the second filter, the filter changing mechanism being configured to be selectively switched to the first state or the second state.

An air purification device includes an adsorption block, a housing, an introduction port for indoor air, an introduction port for heated air, a return port for indoor air, and a discharge port for used regeneration air. The adsorption block adsorbs purification target substances in indoor air, and is regenerated by dispersing the adsorbed purification target substances by circulating heated air. The housing accommodates the adsorption block therein. The introduction port for indoor air and the introduction port for heated air are provided on one end side of the housing. The return port for indoor air and the discharge port for used regeneration air are provided on the other end side of the housing. An insulating layer is provided between the housing and an outer surface of the adsorption block.

An air treatment system for an agricultural vehicle includes an air filtration apparatus having an air filter housing for receiving an air filter cartridge and downstream air processing apparatus fluidly connected with the air filter housing by a duct. The system can receive first and second type air filter cartridges having corresponding first and second outlet sealing configurations. The duct has inner and outer conduits that define an inner flow path and an outer flow path. A filter sealing arrangement of the duct can engage with either type of filter cartridge. This enables two different types of filter cartridge, which may be configured to provide different levels of filtration, to be selectively mounted to the system in the same housing. Air flow may be restricted to the inner flow path when one type of air filter cartridge is fitted.