MANN+HUMMEL Patente

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.

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.

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).

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).

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 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).

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).

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A stack plate device (400) for a humidifier (1000), in particular for a fuel cell system, comprises stack plates (100) being stacked one on top of each other in a stacking direction (500), adjacent ones of the stack plates (100) being alternately rotated around a central axis (510), with a top side (126) of one stack plate (100) facing a bottom side (125) of an adjacent stack plate (100), each of the stack plates (100) comprising a peripheral frame (120), the peripheral frame (120) enclosing a through-opening (130) and comprising an inflow region (402) and an outflow region (404) opposing the inflow region (402) that are transverse to the stacking direction (500). The peripheral frame (120) of each of the stack plates (100) comprises inner connecting elements (140) and outer connecting elements (150).

Ein Filterelement (1) zum Filtern eines Fluids, insbesondere zum Filtern von Verbrennungsluft in einem Kraftfahrzeug und/oder zum Filtern von Betriebsmitteln eines Kraftfahrzeugs, umfasst ein Faltenpack (2), welches aus einem zickzackförmig gefalteten Filtermedium (9) mit durch Faltkanten (16) begrenzten Faltabschnitten (22) gebildet ist. Mindestens zwei direkt benachbarte Faltabschnitte (22A, 22B) sind entlang einer Klebelinie (21) durch eine Verklebung (23) mit Hilfe eines Klebstoffmaterials (24) miteinander verbunden, wobei die Klebelinie (21) zumindest abschnittsweise schräg zu der zwischen den zwei direkt benachbarten Faltabschnitten (22A, 22B) liegenden Faltkante (16A) verläuft oder entlang der zwischen den zwei direkt benachbarten Faltabschnitten (22A, 22B) liegenden Faltkante (16A) versetzt verläuft.

A sensor unit (20) for an air filter (1) configured to separate, from an air flow (3), at least one harmful gas, in particular for a fuel cell (2), the sensor unit (20) comprising a first sensor (21) and a second sensor (22), each of which comprising two electrodes (27, 28) and a material layer (30) connecting the two electrodes (27, 28), an electrical resistance of the material layer (30) changing when the material layer (30) comes into contact with the harmful gas, and the material layer (30) of the first sensor (21) being different from the material layer (30) of the second sensor (22), and a processing unit (23) configured to determine a time derivative of a change in the electrical resistance of the material layer (30) of at least the first sensor (21), and to generate an output signal (26) based on the determined time derivative.

An adsorber element (10) comprises a multilayered adsorber material (12) through which fluid can flow, the adsorber material (12) comprising a sorbent layer (16) configured to be regenerated using heat. The adsorber element (10) further comprises a heating device (14) positioned adjacent to the adsorber material (12) and configured to generate the heat.

An adsorber device (10) comprises a housing (12) comprising an adsorption channel (18) for guiding an adsorption fluid flow, and a desorption channel (20) for guiding a desorption fluid flow, and an adsorber element (14) being rotatable in relation to the housing (12) and being arranged partly in the adsorption channel (18) and partly in the desorption channel (20). When the adsorber element (14) is rotated, a body of rotation is formed. An inlet portion (22) of the adsorption channel (18) is for directing the adsorption fluid flow into a first circumferential portion (30) of a generated surface of the body of rotation, and an inlet portion (26) of the desorption channel (20) is for directing the desorption fluid flow into a second circumferential portion (32) of the generated surface of the body of rotation.

An ion exchanger filter device (100), in particular for a fuel cell system, the ion exchanger filter device (100) comprising a housing (102) comprising a cover (112) and at least one inflow opening (104) and at least one outflow opening (106) for a medium, the housing (102) extending in an axial direction (80), and an ion exchanger cartridge (10) being enclosed by the housing (102) and comprising one or more inflow ports (34) at an upstream end (20), and a circumferentially extending wall (32) enclosing a receptacle (16) filled with an ion exchanger material (12), the wall (32) comprising one or more outflow ports (18) at a downstream end (21) opposing the upstream end (20). The upstream end (20) comprises a sealing plane (60) providing a sealing contact to the housing (102), the sealing plane (60) being inclined to the axial direction (80) by an angle (70).

An ion exchanger filter device (100), in particular for a fuel cell system, the ion exchanger filter device (100) comprising a housing (102) comprising a cover (112) and at least one inflow opening (104) and at least one outflow opening (106) for a medium, the housing (102) extending in an axial direction (80), and an ion exchanger cartridge (10) being enclosed by the housing (102) and comprising one or more inflow ports (34) at an upstream end (20), and a circumferentially extending wall (32) enclosing a receptacle (16) filled with an ion exchanger material (12), the wall (32) comprising one or more outflow ports (18) at a downstream end (21) opposing the upstream end (20). A main flow path (50) through the ion exchanger cartridge (10) is provided, for the medium, between the one or more inflow ports (34) and the one or more outflow ports (18). The housing (102) further comprises a bypass channel (116) between the inflow opening (104) and the outflow opening (106), for the medium bypassing the ion exchanger cartridge (10). The ion exchanger cartridge (10) further comprises a closure element (40) configured to close the bypass channel (116) when the ion exchanger cartridge (10) is mounted in an intended mounting position to the housing (102).

Die Erfindung betrifft ein Ringfilterelement mit einem Filtermediumkörper in Form eines Faltenbalgs, der radial innen wenigstens eine Faltenaufspreizung aufweist, welche an eine offene Endscheibe angrenzt. Die offene Endscheibe weist wenigstens eine Aussparung auf. Die Aussparung und die Faltenaufspreizung sind in Überdeckung miteinander angeordnet. Am von der offenen Endscheibe abgewandten axialen Ende ist der Filtermediumkörper von einer geschlossen Endscheibe abgedichtet. Beim Gebrauch des Ringfilterelements in einer Filtervorrichtung greift ein Eingriffselement in die Faltenaufspreizung und/oder in die Aussparung ein. Das Eingriffselement kann an einem Filtergehäuse oder einem weiteren Ringfilterelement der Filtervorrichtung ausgebildet sein. Somit ist eine Winkelposition des Ringfilterelements bezüglich des Filtergehäuses bzw. des weiteren Ringfilterelements fixiert.

A filter element (10) comprises a fold pack (2) comprising a flat filter medium (1) folded in a zigzag shape, the fold pack (2) further comprising upstream folds (2A) and downstream folds (2B), a frame element (3A, 3B, 4A, 4B) at least partially enclosing the fold pack (2), the frame element (3A, 3B, 4A, 4B) being attached to lateral fold profiles (5A, 5B) and end fold sections (6A, 6B) of the fold pack (2), a cover element (7) attached to the frame element (3A, 3B, 4A, 4B) thereby forming an interior volume (8) confined by the folded filter medium (1), the frame (3A, 3B, 4A, 4B) and the cover element (7), and a filling (14) comprising particulate adsorber material (9) within the interior volume (8) and covering at least partially a folding edge (15) of the upstream folds (2A) facing the cover element (7).

An adsorber cartridge (24; 72) comprises an annular sleeve comprising an inner wall (28), an outer wall (30), a first end cap (34), and a second end cap (36), the first end cap (34) comprising an opening (52). The adsorber cartridge (24; 72) further comprises adsorbent material (40) contained in the annular sleeve, a movable compression plate (38; 84) arranged within the annular sleeve and between the first end cap (34) and the adsorbent material (40), and at least one actuation element (54; 82) arranged in the opening (52) and configured to bias the movable compression plate (38; 84) against the adsorbent material (40).

A check valve (10) comprises a housing (12) configured to be arranged entirely within a fluid line (70), the housing (12) comprising an outer surface (14) configured to be connected to an inside of the fluid line (70) in a fluid tight manner, and an inner flow region comprising an inflow region (20) and an outflow region (22), a valve seat (24) arranged between the inflow region (20) and the outflow region (22), and a flap (26) mounted to the housing (12) and pivotable about a rotational axis (Y) between a closed state and an open state of the flap (26), the flap (26) comprising a first side (16) facing the inflow region (20) in the closed state of the flap (26) and comprising a second side (18) opposite to the first side (16). The flap (26) is configured to in the closed state, be received by the valve seat (24), and in the open state, enable flow through the check valve (10) from the inflow region (20) to the outflow region (22) along a flow direction (X).

A venting unit (34) for a battery case, the venting unit (34) comprising a housing part (36) delimiting a vent opening (38), and a membrane assembly (10; 10') spanning across the vent opening (38) and comprising a membrane carrier (12; 12') comprising carrier segments (14) and flow windows (16) respectively disposed through the carrier segments (14), and membrane segments (18) respectively covering the flow windows (16). Each adjacent pair of the carrier segments (14) is folded against one another along a film hinge (20) disposed therebetween.

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