Mann + Hummel Intellectual Property

A filter element (2) for reversibly capturing CO<2> from ambient air (6) comprises a shaped flat support medium (8); and adsorber particles (9), configured to adsorb CO<2> from ambient air (6). The adsorber particles (9) are adhered to the shaped flat support medium (8), wherein the combination of the shaped flat support medium (8) with the adhered adsorber particles (9) is permeable to ambient air (6).

The present disclosure relates to a sensor unit for use in an air filter system which serves to separate at least one harmful gas from an air flow. The sensor unit comprises a first sensor. The first sensor comprises two electrodes and a material layer which connects the electrodes. The electrical resistance of the material layer changes when the material layer comes into contact with the at least one harmful gas. The sensor unit further comprises a processing unit configured to determine a time derivative of a change in resistance of the material layer of at least the first sensor and to generate an output signal based on a function of the determined time derivative. Furthermore, the present disclosure relates to a method for manufacturing the sensor unit.

A filtration system (100) for filtering fluids, in particular for filtering exhaust fluids of a fuel cell system, comprises a water separator (10) for separating water from a fluid flow, the water separator (10) comprising an inlet port (12) for the fluid flow having a first water content entering the water separator (10), an outlet port (14) for the fluid flow having a second water content leaving the water separator (10), and a water drain port (16) for the water separated from the fluid flow, the first water content being higher than the second water content, and a first filter module (20) and a second filter module (30), each of the first and second filter modules (20, 30) comprising a first adsorbent material (42) and/or a second adsorbent material (52). An inlet port (24) of the first filter module (20) is connected to the outlet port (14) of the water separator (10), an inlet port (34) of the second filter module (30) is connected to the water drain port (16) of the water separator (10), the first filter module (20) comprises an outlet port (26) for a filtered fluid, the second filter module (30) comprises an outlet port (36) for filtered water, and the first and second adsorbent materials (42, 52) are for removing at least perfluoroalkyl and polyfluoroalkyl substances from the fluid flow and/or the water.

The invention relates to a filter element (100), in particular an air filter element, at least comprising a filter media pack (10) with folded pleats (14) of a filter medium (12), a frame (30) enclosing the filter media pack and comprising two opposing side components (32, 34). Electrically conductive corrugated separators (50) are placed between adjacent pleats (14) of the filter media pack (10). An electrically conductive sheet (52) is placed on an inner side (42, 44) of at least one of the side components (32, 34). The separators (50) are in electrical contact with the sheet (52) of the at least one side component (32, 34). An earthing wire (60) is electrically connected to each sheet (52).The invention further relates to a method for manufacturing a filter element (100).

A filter medium is provided, comprising a pre-filter layer made of staple fibers and a microfiber layer adhered to the pre-filter layer. The thickness of an adhesion interface is limited to a maximum of 30% of the total thickness of the pre-filter layer and the microfiber layer. Additionally, a method of producing the filter medium and a filter element designed for the filtration of cabin air, which filter element incorporates the filter medium, are described.

An emergency degassing unit (100) for degassing a battery housing, in particular a battery housing of a traction battery of a motor vehicle, the emergency degassing unit comprising a base body (10) and a valve unit (30) comprising a flexible valve keeper (32) and a closure element (34), the valve keeper being mounted with a mechanical preload force in an axial direction (16) to the base body, the closure element being configured to be in a closed position if a force acting on the closure element that is generated by a pressure in the battery housing is lower than the preload force of the valve keeper, and the closing element being configured to be in an open position if the force acting on the closure element generated by the pressure in the battery housing exceeds the preload force of the valve keeper, the emergency degassing unit further comprising a protective cover (26) arranged in the axial direction above the closure element, the protective cover being configured to limit a movement of the valve keeper in the axial direction when the closure element is in the open position.

A filter device (200) for filtering a fluid stream of a housing (60) of a battery, in particular of a traction battery of a motor vehicle, comprises a cover element (100) comprising a base section (110), a top section (150), and a fluid permeable fluid passage (22) for venting, the cover element (100) comprising an open end (112) at a free end (114) of the base section (110) and a closed end (156) at a free end (158) of the top section (150), and the base section (110) being connected to the top section (150), in particular being integral with the top section (150). The filter device (200) further comprises a filter arrangement (130) arranged between the free end (114) of the base section (110) and the free end (158) of the top section (150), and at least one pressure relief valve (160) arranged on the top section (150) and in an intended fluid flow direction (20) downstream of the filter arrangement (130). The filter arrangement (130) comprises a filter element (132) and a particle separator (134) arranged upstream of the filter element (132) in the intended fluid flow direction (20).

A filter device (200) for filtering a fluid stream of a housing (60) of a battery, in particular of a traction battery of a motor vehicle, comprises a cover element (100) comprising a base section (110) and a top section (150), that comprise a fluid passage (22) for venting, the cover element (100) further comprising an open end (112) at a free end (114) of the base section (110) and a closed end (156) at a free end (158) of the top section (150), and the base section (110) being connected to the top section (150). The filter device (200) further comprises a filter arrangement (130) arranged inside the cover element (100), in particular inside the top section (150), and a pressure relief valve (160) arranged in an intended fluid flow direction (20) downstream of the filter arrangement (130). The filter arrangement (130) comprises a filter element (132) and a particle separator (134) that are hollow, in particular round, the particle separator (134) being arranged upstream of the filter element (132) in the intended fluid flow direction (20).

An adsorber element (10), in particular for dehumidification of air, the adsorber element (10) comprising at least one pleated adsorber medium body (12, 14) circumferentially surrounding a rotational axis (16). Fold edges (18) of the at least one pleated adsorber medium body (12, 14) extend radial to the rotational axis (16).

A system (100) for cleaning exhaust of a fuel cell system (200), the system (100) comprising at least one reservoir (20) comprising a filtration cartridge (40) with adsorbent/absorbent material (42) configured to remove perfluoroalkyl and polyfluoroalkyl substances from the exhaust, and a release valve (50) connected to an outlet port (26) of the at least one reservoir (20).