A filter insertion opening into which a filter is inserted is formed in an indoor-air/outdoor-air switching unit, which constitutes an air conditioning device for a vehicle, and a guide section for guiding the filter downstream in the insertion direction is provided on the inner wall surface of a casing so as to face the filter insertion opening. The guide section has: a first lower guide facing the filter insertion opening and tilted upward; and a second lower guide formed downstream of the first lower guide in the insertion direction and tilted downward. When inserting the filter from the filter insertion opening, the filter is guided along the first lower guide and therefore is inserted while being tilted such that the end of the filter, which is located downstream in the insertion direction, is lifted up. Consequently, the filter can be inserted without contact with the vehicle body-side structure.

The disclosure relates to an air filter arrangement for cleaning a bitumen-containing volume flow, comprising at least a first filter element and a second filter element, which are arranged as filter elements acting in succession for cleaning the bitumen-containing volume flow, wherein the first filter element and the second filter element are fixedly connected to one another. Furthermore, the disclosure relates to a method for carrying out an exchange of a plurality of filter elements.

Provided are a filter cover including: a body; a pair of fastening parts protruding from both end of the body in a length direction thereof and coupled to coupling parts formed in an air conditioning case; a first reinforcement rib having one side fixed to a front surface of the body in a width direction thereof and the other side fixed to the fastening parts; and a support rib protruding from one side of the first reinforcement rib in a height direction and fixed to the body, and an air conditioning system for a vehicle including an air conditioning case having coupling parts formed around a filter insertion hole into which a filter is inserted, and the filter cover coupled to the air conditioning case.

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.

A filter element for filtering a fluid has one or more filter bellows with a specified raw side and a specified clean side oppositely positioned relative to the specified raw side. The filter bellows has a filter medium that is folded along fold edges in a zigzag shape to folds, wherein the folds extend between oppositely positioned end edges of the at least one filter bellows, wherein the filter bellows has parallel extending end edge faces at oppositely positioned end faces. At least one pre-separator embodied as a flat mat is arranged at the raw side of the filter bellows. A frame is injection-molded from plastic material around the filter bellows and seals the end edge faces. The pre-separator is fastened to the raw side with fastening elements arranged at the frame. A filter system with a filter housing is provided with such a filter element.

A filter for an HVAC system has a body formed entirely of an air-transmissive open-cell polymeric material. The body is of a generally rectangular configuration. The body has a plurality of cuts extending entirely through a thickness of the body from the top to the bottom of the body. The plurality of cuts define a plurality of cubical members frangibly connected together such that each of the plurality of cubical members is separable by hand from a remainder of the body such that an individual cubical member is removable along both a portion of a length and a portion of a width of the body.

A filter for an air conditioner has a body formed of an air-transmissive material. The body is of a generally rectangular configuration and has a top, bottom, a front, a back and a pair of sides. The body has a plurality of cuts formed through a thickness thereof. The plurality of cuts define a plurality of cubical or rectangular members frangibly connected together. The plurality of cubical or rectangular members are separable from a remainder of the body such that the body has a size suitable for being received within a filter-receiving receptacle of the air conditioner.

In order to guarantee reliable maintenance, a reliable energy supply and simple handling of the service cover and the vehicle air conditioner at the smallest possible structural cost, it is proposed that the service cover has electrical means, by means of which an air-treatment device arranged within the vehicle air conditioner can be supplied with the electrical energy necessary in order to operate said air-treatment device from outside the vehicle air conditioner.

A vehicle body structure includes a wall and a removable panel. The wall has a first surface and a second surface opposite the first surface. The wall defines a vent opening with a peripheral edge extending between the first surface and the second surface. The wall includes an air vent structure open to the vent opening. The removable panel has a trim surface and an attachment surface with a plurality of air vent slots extending from the attachment surface to the trim surface. The attachment surface has a retaining structure configured to retain an air filter along the attachment surface and an attachment structure configured to attach to the wall covering the vent opening with the retaining structure extending at least partially within the air vent structure.

The present invention relates to a housing (1) for a heating, air-conditioning and/or ventilation device for a motor vehicle, configured to receive an air filter (3), said air filter (3) comprising a first filtering medium (30) which is delimited by at least two primary frame strips (300) and a second filtering medium (31) which is delimited by at least two secondary frame strips (310), according to which said housing (1) comprises at least one maintenance device (100) which is configured to retain one of said primary frame strips (300) when said first filtering medium (10) is mounted in said housing (1).