An air cleaner is provided that may include a first air cleaning module having a first fan that generates air flow from a first suction inlet toward a first discharge outlet; a second air cleaning module having a second fan that generates air flow from a second suction inlet toward a second discharge outlet; a dividing plate provided between the first air cleaning module and the second air cleaning module; and a display provided at inside of the dividing plate and in which a light source is provided.

The invention features a filtration segment having a top seal, a bottom seal and a primary filter core and the method of filtering with the design of the filtration segment. The primary filter core is operatively coupled to at least one opening which is located either on the top seal or on the bottom seal. The filtration segment also includes one or more interior filters surrounding the primary filter core. Each interior filter includes a filter material surrounding a secondary core which is operatively coupled to at least one opening which is located either on the top seal or on the bottom seal. Each filter may optionally include a retaining medium enclosing the filter material. The filtration segment has one or more layers of an exterior filter media which operatively surround the interior filters and are operatively coupled to the top seal and the bottom seal.

A filter retaining mechanism for retaining a filter and a pre-filter in relation to a filter aperture of a filter frame. A base clip retained by a proximal portion of a shank engages a flange of the frame, and a filter/pre-filter clip is retained by a distal portion of the shank. The filter/pre-filter clip has a proximal retaining formation that forms a distal retaining surface of a first reception area for retaining a filter and a proximal retaining surface of a second reception area for retaining a pre-filter and a distal retaining formation that forms a distal retaining surface of the second reception area. The filter/pre-filter clip is pivotable about a longitudinal axis between a first condition wherein the proximal and distal retaining formations retain the filter and the pre-filter and a second condition wherein the proximal and distal retaining formations face away from the filter aperture to release the filter and the pre-filter.

An air cleaner is provided that may include a first air cleaning module having a first fan that generates air flow from a first suction inlet toward a first discharge outlet; a second air cleaning module having a second fan that generates air flow from a second suction inlet toward a second discharge outlet; a dividing plate provided between the first air cleaning module and the second air cleaning module; and a display provided at inside of the dividing plate and in which a light source is provided.

An air cleaner is provided that may include a first air cleaning module having a first fan that generates air flow from a first suction inlet toward a first discharge outlet; a second air cleaning module having a second fan that generates air flow from a second suction inlet toward a second discharge outlet; a dividing plate provided between the first air cleaning module and the second air cleaning module; and a display provided at inside of the dividing plate and in which a light source is provided.

A filter for the purification of exhaust gases of an internal combustion engine includes: a housing that can be flowed through by exhaust gas in an axial direction and has an inflow side and an outflow side; a filter body is formed in the housing from a plurality of filter layers, which filter body can be flowed through by the exhaust gas flowing through the housing. The filter layers are of annular form and are arranged concentrically with respect to one another, wherein, in alternating fashion, two filter layers adjacent to one another in a radial direction are connected to one another in fluid-tight fashion at the inflow side, and two filter layers adjacent to one another in a radial direction are connected to one another at the outflow side.

A filter media construction wherein at least two layers of a substantially open spacer and at least two layers of a filter media/material are combined in an alternating sequence and coiled around a core to form at least two distinct, continuous or segmented, coil-shaped fluid flow channels that are contiguous but separated by the filter media in the radial direction and extend axially from an inlet side to an outlet side of the filter media construction preventing direct fluid flow between the clean and dirty sides of the filter media construction. The spacer maintains substantially uniform width of the flow channels in the flow direction providing substantially uniform fluid flow. One flow channel is closed to fluid flow at the inlet side forming the clean side and the other flow channel is closed to fluid flow at the outlet side forming the dirty side of the filter media construction.

The present application relates to a filter cartridge for removing impurities from a dirty gas flow to be filtered, including a cylindrical filter element made from filter material, a filter insert inserted in the filter element, an inner space formed between the filter element and the filter insert, with the filter material being designed for being cleaned when a compressed air flow is applied against a flow direction of the dirty gas flow, and a base body of a flow guiding device having a surface designed for guiding the compressed air flow, wherein the base body has a distal end zone which is prepared for being completed by an end piece separate from the filter cartridge and mountable to an external housing for flow guiding the compressed air flow. Further, the present application relates to a kit, a filter unit, and a method for cleaning the filter cartridge.

The disclosure relates to a filter cartridge for removing impurities from a stream of raw gas to be filtered, including a cylindrical filter element which is made of a filter material and in which a filter insert is inserted, an interior space being formed between the filter element and the filter insert, the filter material being designed to be cleaned when a stream of compressed air is applied against a flow direction of the stream of raw gas, a cap designed as a flow guiding device being provided for guiding the stream of compressed air, wherein the cap is arranged such that it projects beyond an axial length of the filter element in the axial direction. The disclosure further concerns a filter system for removing impurities from a stream of raw gas to be filtered. In addition, the disclosure relates to a method for cleaning such a filter cartridge.

The air filter systems described herein include one or more pulse collectors and pulse generators aligned along pulse axes. The pulse generators and filter elements may be arranged along a pulse distance as measured from a pulse outlet to a filter element opening. The pulse collectors and the filter elements may have openings with a relationship between them within parameters described herein. The pulse collectors may have a relationship between their hydraulic diameter and their length within parameters described herein. The pulse collectors may include a filter section and a pulse section that meet at a junction along a length of the pulse collector. The pulse sections may have a hydraulic diameter that increases when moving from the junction to the tube sheet opening of the pulse section. The filter sections may have a hydraulic diameter that remains constant when moving from the junction to the filter end opening of the filter section. Filter elements/cartridges used in the air filter systems may have filter media shaped or formed into ovate cross-sections