EP4376987A1 - Humidificateur comprenant un empilement de plaques et un empilement de plaques - Google Patents

Humidificateur comprenant un empilement de plaques et un empilement de plaques

Info

Publication number
EP4376987A1
EP4376987A1 EP22734559.2A EP22734559A EP4376987A1 EP 4376987 A1 EP4376987 A1 EP 4376987A1 EP 22734559 A EP22734559 A EP 22734559A EP 4376987 A1 EP4376987 A1 EP 4376987A1
Authority
EP
European Patent Office
Prior art keywords
plate stack
fluid
receiving device
housing
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22734559.2A
Other languages
German (de)
English (en)
Inventor
Alexander Korn
Ralph Kemper
Herbert Pietrowski
Matthias Müller
Mario Rieger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP4376987A1 publication Critical patent/EP4376987A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04126—Humidifying
    • H01M8/04149—Humidifying by diffusion, e.g. making use of membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/0822—Plate-and-frame devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/084—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes
    • B01D63/085—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes specially adapted for two fluids in mass exchange flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0015—Heat and mass exchangers, e.g. with permeable walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/04—Specific sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/14—Specific spacers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/20—Specific housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/20—Specific housing
    • B01D2313/201—Closed housing, vessels or containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/21—Specific headers, end caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/56—Specific mechanisms for loading the membrane in a module
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/22—Membrane contactor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the invention relates to a humidification device, in particular for a fuel cell system, having a housing in which a stack of plates is arranged, and a plate stack for a humidifying device, in particular for a fuel cell system, having a plurality of channel plates arranged one after the other in a stacking direction.
  • DE 10 2013 020 503 A1 discloses a humidification device which is used to enrich flow air, which is supplied to a fuel cell for the electrochemical reaction, for example, with a defined moisture content.
  • the humidification device has a stacking unit with a plurality of membranes arranged one above the other, preferably parallel and spaced apart from one another, each of which is permeable to water but not to air, with air currents with different levels of moisture content being guided along the opposite sides of the membrane, so that a Water or what vapor exchange takes place from the air stream with higher moisture content to the air stream with lower moisture content.
  • the humidifying device has the stacking unit with water vapor-permeable membranes, which are arranged between frame parts.
  • the housing has pillars for holding the stacking unit, the connection between the pillars and the frame parts taking place via laterally protruding connecting lugs which protrude into a receiving groove.
  • An object of the invention is to provide a humidification device, in particular for a fuel cell system, with an improved arrangement of a plate stack.
  • a further object is to specify a stack of plates for an improved arrangement of the stack of plates in such a humidifying device.
  • a humidification device in particular for a fuel cell system, with a housing which has at least one inlet for a first fluid, in particular an exhaust gas from the fuel cell system, and an inlet for a second fluid, in particular a inlet air of the fuel cell system, has an outlet for the first fluid and an outlet for the second fluid, with a plate stack having a plurality of channel plates following one another in a stacking direction being arranged in the housing, which flow channels separated from one another by semipermeable membranes for the have first fluid and for the second fluid, wherein the housing at least at least one receiving device which interacts with a receiving device arranged on the plate stack to store and seal the plate stack in the housing.
  • a plate stack for a humidification device in particular for a fuel cell system, comprising a plurality of channel plates which follow one another in a stacking direction and which have flow channels separated from one another by semi-permeable membranes for the first fluid and for the have a second fluid, further comprising a counter-receiving device which, when the plate stack is arranged correctly in a housing of the humidification device, cooperates with a receiving device arranged in the housing to store and seal the plate stack in the housing.
  • a humidification device in particular for a fuel cell system, with a housing which has at least one inlet for a first fluid, in particular an exhaust gas from the fuel cell system, an inlet for a second fluid, in particular an air supply to the fuel cell system, and an outlet for the first fluid and an outlet for the second fluid, a plate stack having a plurality of channel plates following one another in a stacking direction being arranged in the housing, which have flow channels for the first fluid and for the second fluid separated from one another by semipermeable membranes.
  • the stack of plates is bordered by an end plate at each end facing away from one another in the stacking direction.
  • the housing has at least one receiving device, which cooperates with a counter-receiving device arranged on the plate stack to support and seal the plate stack in the housing.
  • the counter-receiving device extends in a plane normal to the stacking direction and is arranged on at least one of the end plates of the plate stack.
  • At least one device component of the counter-receiving device is formed in one piece with the end plate, in particular injection-molded in one piece with a plastic material of the end plate.
  • the humidification device represents a special embodiment of a flat membrane humidifier.
  • a first, humid or water-rich flow channel flows in a group of flow channels Fluid, such as exhaust gas from fuel cells, while in another group of flow channels Strö a second, dry fluid, such as supply air for the fuel cells, flows.
  • the second, dry fluid can be moistened by the first fluid via the semi-permeable membranes.
  • the plate stack with the channel plates is, for example, axially sealed in the housing in a floating manner via two axially acting seals located at the ends on the inlet side and outlet side of the first or second fluid. These seals can either seal the supply air or the exhaust gas area.
  • the supply air area is preferably sealed in this case.
  • a counter-receiving device can be arranged on each of the two end plates.
  • the flow channels each define flow directions for the first fluid and for the second fluid, with the flow directions running at an angle to one another, in particular perpendicular to one another.
  • the counter-receiving device can extend here at least in sections parallel to one of the flow directions.
  • the counter-receiving device can extend at least in sections at an acute angle to at least one of the flow directions for the first fluid and/or the second fluid.
  • the counter-receiving device forms a V-shape on the respective end plate.
  • the channel plates and end plates can each have a polygonal shape, in particular a rectangular shape, with the counter-receiving device extending between two opposite edges of at least one of the end plates of the plate stack.
  • the counter-receiving device does not extend into corner areas of the polygonal end plates.
  • the counter-receiving device extends between two opposite edges of the polygonal end plate.
  • the counter-receiving device extends from an area of an edge located between two immediately adjacent corners into an area of an opposite edge located between two immediately adjacent corners, in particular in the center with respect to the respective immediately adjacent corners.
  • the plate stack is mounted via two bearing ribs which are arranged on the side of the plate stack, run in the sealing direction of the axial seal and act as a counter-receiving device, which engage in guide grooves of the housing as a receiving device.
  • the tongue-and-groove connection created in this way is responsible not only for storage but also for sealing a bypass flow of the fluid flow that is not directly sealed.
  • the contact point of the tongue and groove connection is preferably realized via an elastomer element as a sealing device, for example an O-ring or a molded seal.
  • a sealing device for example an O-ring or a molded seal.
  • bearing ribs can be arranged on the housing and the guide grooves on the plate stack.
  • the channel plates of the plate stack can be designed, for example, as stainless steel plates or as plastic plates, for example made of PPS (polypropylene sulfide).
  • the housing of the humidifier can be made of metal, for example aluminum.
  • the housing can be made of plastic, for example PPS, PPA (polyphthalamide), PA (polyamide).
  • the housing can be designed in several parts with a removable cover. In this way, the plate stack can be removed from the housing and/or replaced for maintenance purposes.
  • the semi-permeable membrane may be formed from a microporous material.
  • the micropores in the material allow moisture to be transported through the membrane. Moisture transport can advantageously take place by means of capillary action in the microporous material.
  • the membrane can be formed from PFSA.
  • PFSA is a plastic made from perfluorosulfonic acid and is known, among other things, under the brand name Nafion.
  • the membrane can go to either side porous layers, in particular fleece layers, for protection and mechanical stabilization.
  • the receiving device or the counter-receiving device can have at least two guide grooves lying opposite one another transversely, in particular perpendicularly, to a direction of gravity. Furthermore, the counter-receiving device or the receiving device can have at least two bearing ribs lying opposite one another.
  • the guide grooves and the bearing ribs can engage in one another when the plate stack is arranged as intended in the housing.
  • This tongue and groove connection in particular in combination with a sealing device, allows the stack of plates to be advantageously mounted in a floating manner and at the same time to be sealed against a bypass flow of the first fluid.
  • the tongue and groove connection supports the sealing effect and at the same time serves as a vibration damper to minimize the vibrations that occur on the plate stack during operation.
  • the receiving device or the counter-receiving device can have sealing devices, whereby an axial sealing of the plate stack against the housing can be effected when the plate stack is arranged correctly in the housing.
  • the sealing device thus advantageously provides a seal, for example in a vertical axis of the housing, against flow around the plate stack from a first interior space of the housing into a second interior space of the housing, for example flow from an upper interior space of the housing to a lower interior space.
  • a bypass flow of the first fluid or of the second fluid around the plate stack can be prevented by the sealing devices.
  • the sealing devices serve as vibration dampers in order to minimize the vibrations that occur on the stack of plates during operation.
  • the sealing device can, for example, be implemented as an EPDM (ethylene propylene diene rubber) element.
  • EPDM ethylene propylene diene rubber
  • foam the sealing device for example with a silicone-based material.
  • the seal can be produced as a so-called CIP (cured in place) seal.
  • the sealing devices can be arranged on opposite sides of the bearing ribs or the guide grooves. This advantageously results in a two-sided and thus double seal. In addition, the sealing device can thus function even better as a vibration damper for the plate stack.
  • the sealing devices can be arranged circumferentially on the opposite sides of the bearing ribs or the guide grooves. This advantageously results in a two-sided and thus double seal. In addition, the sealing device can thus act even better as a vibration damper for the plate stack. In addition, cheap O-ring seals, for example, can also be used as a result.
  • the bearing ribs can have axial sealing sections on the two opposite end faces. This further strengthens the axial sealing effect. In addition, such an arrangement of the axial sections you can increase the vibration damping in the area of the bearing ribs.
  • the axial sealing sections can be formed in one piece with the sealing devices.
  • the axial sealing sections can be manufactured inexpensively and can be captively arranged. This makes it easier to assemble the stack of plates.
  • the stack of plates can be sealed with a circumferential axial seal on two opposite end faces, in particular on an inflow area and outflow area of the first or second fluid.
  • the peripheral axial seal can be arranged in a groove on the plate stack and seal against an inside of the housing.
  • the circumferential seal can be arranged in a groove on an inside of the housing and can seal against the stack of plates.
  • a plate stack for a humidification device in particular for a fuel cell system, comprising a plurality of channel plates which follow one another in a stacking direction and which have flow channels separated from one another by semipermeable membranes for the first fluid and for the second fluid exhibit.
  • the stack of plates is bordered by an end plate in each case at ends facing away from one another in the stacking direction.
  • the plate stack also includes a counter-receiving device, which, when the plate stack is arranged as intended in a housing of the humidifying device, interacts with a receiving device arranged in the housing to delay and seal the plate stack in the housing.
  • the counter receiving device extends in a plane normal to the stacking direction and is arranged on at least one of the end plates of the plate stack.
  • a counter-receiving device can be arranged on each of the two end plates.
  • the at least one counter-receiving device can be designed in one piece with at least one of the end plates.
  • the flow channels each define flow directions for the first fluid and for the second fluid, with the flow directions running at an angle to one another, in particular perpendicular to one another.
  • the counter-receiving device can extend here at least in sections parallel to one of the flow directions.
  • the counter-receiving device can extend at least in sections at an acute angle to one of the flow directions.
  • the counter-receiving device forms a V-shape on the respective end plate.
  • the channel plates and end plates can each have a polygonal shape, in particular a rectangular shape, with the counter-receiving device extending between two opposite edges of at least one of the end plates of the plate stack.
  • the counter-receiving device does not extend into corner areas of the polygonal end plates.
  • the counter-receiving device extends between two opposite edges of the polygonal end plate.
  • the counter-receiving device extends from an area of an edge located between two immediately adjacent corners into an area of an opposite edge located between two immediately adjacent corners, in each case centrally with respect to the respective immediately adjacent corners.
  • the counter-receiving device can have sealing devices, whereby an axial sealing of the plate stack against the housing can be effected when the plate stack is arranged as intended in the housing.
  • a bypass flow of the first fluid or the second fluid around the plate stack can be prevented by the sealing devices.
  • the sealing device thus advantageously provides a seal in a vertical axis of the housing against a flow around the stack of plates from an upper interior space of the housing to a lower interior space.
  • a bypass flow of the first fluid or the second fluid around the plate stack can be prevented by the sealing devices.
  • the sealing devices serve as vibration dampers in order to minimize the vibrations that occur on the stack of plates during operation.
  • the sealing device can, for example, be implemented as an EPDM (ethylene propylene diene rubber) element. Alternatively, it is also possible to foam the sealing device, for example with a silicone-based material.
  • the seal can be manufactured as a CIP (cured in place) seal.
  • FIG. 1 shows a humidification device, in particular for a fuel cell system, according to an exemplary embodiment of the invention in an isometric representation
  • FIG. 2 shows a stack of plates according to an embodiment of the invention in an isometric representation
  • FIG. 3 shows a longitudinal section through the moistening device according to FIG. 1;
  • FIG. 4 shows an enlarged detail from the longitudinal section of the moistening device according to FIG. 3;
  • FIG. 5 shows a cross section through the moistening device according to FIG. 1;
  • FIG. 6 shows a further longitudinal section through the moistening device according to FIG. 1;
  • FIG. 7 shows an enlarged detail from the longitudinal section of the moistening device according to FIG. 6 with the stack of plates;
  • FIG. 8 shows a stack of plates according to a further exemplary embodiment of the invention in an isometric representation.
  • FIG. 1 shows a humidification device 100, in particular for a fuel cell system, according to an exemplary embodiment of the invention in an isometric representation from an outside.
  • Figure 2 shows a stack of plates 50 according to an embodiment of the invention in an isometric representation.
  • FIG. 3 shows a longitudinal section through the moistening device 100 with a stack of plates 50, while FIG. 4 shows an enlarged section of the longitudinal section of the moistening device according to FIG.
  • Figure 5 shows a cross section through the humidifier 100.
  • FIG. 6 shows another longitudinal section through the humidification device, rotated by 90° about the vertical axis
  • FIG. 7 shows an enlarged section of the longitudinal section according to FIG.
  • the humidifier 100 comprises a housing 102, which has an inlet 104 for a first fluid 64, in particular an exhaust gas of the fuel cell system, an inlet 108 for a second fluid 66, in particular an inlet air of the fuel cell system , an outlet 106 for the first fluid 64 and an outlet 110 for the second fluid 66 .
  • the exhaust gas is preferably conducted from top to bottom as the first fluid in the direction of gravity g, so that any water that has condensed out does not remain in the plate stack 50 but can be discharged to the outlet 106 due to gravity.
  • the housing 102 there is a stack of plates 50, as shown in FIG.
  • the channel plates 10 are braced against one another with tie rods 58 .
  • the channel plates 10 have flow channels 52, 54, separated from one another by semipermeable membranes, for the first fluid 64 and for the second fluid 66, as can be seen in FIG.
  • the first fluid 64 namely the exhaust gas
  • the second fluid 66 namely the supply air enters the flow channels 54 from the end face 30 via the inflow area 47 and exits again on the opposite end face 32 via the outflow area 49 .
  • the plate stack 50 is sealed at the two opposite end faces 30, 32, in particular at the inflow area 47 and the outflow area 49 of the second fluid 66, with a circumferential seal 68 axi alen.
  • the circumferential axial seal 68 is arranged in a groove (not visible) on the plate stack 50 and seals against an inside of the housing 102, as can be seen in FIGS.
  • the circumferential seal 68 can be arranged in a groove on an inside of the housing 102 and seal against the plate stack 50 .
  • the stack of plates 50 further comprises a counter-receiving device 14 which, when the stack of plates 50 is arranged as intended in the housing 102 of the humidifying device 100, interacts with a receiving device 12 arranged in the housing 102 to support and seal the stack of plates 50 in the housing 102.
  • the counter-recording device 14 is arranged as two bearing ribs 20 on the sides of the plate stack 50.
  • the counter-receiving device 14 also has a circumferential sealing device 22, designed here as an O-ring. On the end faces 30, 32, the counter-receiving device 14 also has axial sealing sections 70, which in this exemplary embodiment are formed in one piece with the axial seal 68.
  • the counter-receiving device 14 is arranged on the two end plates 11 of the plate stack 50 which face away from one another in the stacking direction 40 .
  • the counter-receiving device 14 or bearing ribs 20, which also form these, extend/extend in a plane running normal or perpendicular to the stacking direction 40.
  • the counter-receiving device 14 or bearing ribs 20 of the counter-receiving device 14 extend/extend with a main extension component parallel to one of the flow directions in the flow channels 52, 54, in particular parallel to the flow direction 66 of the second fluid.
  • the counter-receiving device 14, more precisely the bearing ribs 20 forming this, are in particular formed in one piece with a material of the end plate 11, in particular injection-molded in one piece from a plastic material.
  • the sealing device 22 is either pulled onto the bearing ribs 20 as a separate part or is injection molded in one piece with them in a 2K process.
  • Figure 3 shows the installation position of the plate stack 50 in the housing 102 in a longitudinal section.
  • the exhaust gas 64 enters through the inlet 104 into the interior 112 of the housing 102 and flows through the plate stack 50 via the inflow area 46. Via the outflow area 48 on the underside of the plate stack 50, the exhaust gas 64 exits again and leaves the housing 102 via the outlet 106.
  • the supply air 66 enters the housing 102 through the inlet 108 and flows on the front side 30 via the inflow area 47 into the plate stack 50.
  • the moistened supply air 66 exits the plate stack 50 again via the outflow area 49 on the end face 32 and leaves the housing 102 through the outlet 110.
  • the plate stack 50 is sealed at the end faces 30, 32 via the axial seal 68 against the inside of the housing 102. In this way, in the exemplary embodiment shown here, the supply air area is effectively sealed against the exhaust gas area.
  • the housing 102 has a plurality of housing parts which are sealed against one another via housing seals 116 . Some of the housing seals 116 are identified as examples. By removing a housing cover, for example, the plate stack 50 can be removed from the housing 102 and replaced.
  • the mounting of the stack of plates 50 in the housing 102 can be seen in the cross section of the moistening device 100 shown in FIG. 5 and in particular in the longitudinal sections shown in FIGS.
  • the housing 102 has a receiving device 12 which cooperates with the counter-receiving device 14 arranged on the plate stack 50 to store and seal the plate stack 50 in the housing 102 .
  • the receiving device 12 has two opposing guide grooves 114 transversely, in particular perpendicularly to the direction of gravity g, while, as already shown in FIG.
  • the guide grooves 114 and the Lagerrip pen 20 engage in a proper arrangement of the plate stack 50 in the housing 102 into each other.
  • the counter-receiving device 14 on the plate stack 50 has sealing devices 22 in the form of O-rings. As a result, when the plate stack 50 is arranged in the housing 102 as intended, the plate stack 50 is axially sealed against the housing 102 . In particular, bypass flow of the exhaust gas 64 around the plate stack 50 is prevented by the sealing devices 22 .
  • the sealing devices 22 are arranged circumferentially on opposite sides of the bearing ribs 20 .
  • the bearing ribs 20 have, as can be seen in FIG. In FIG. 5, the stack of plates 50 is cut in cross section at the level of the counter-receiving device 14, so that the bearing ribs 20 and the cut O-ring of the sealing device 22 can be seen.
  • the axial sealing sections 70 which seal against the inside of the housing 102, can also be seen in section.
  • the bearing ribs 20 lie in the guide grooves 114, which are also cut into, as a receiving device 12.
  • the mounting of the plate stack 50 via the bearing ribs 20 pushed into the guide grooves 114 can be seen in the longitudinal section in FIGS.
  • the circumferential O-ring of the sealing device 22 seals against an upper side and an underside of the guide groove 114. In this way, it can be advantageously prevented that a bypass flow of the exhaust gas 64 from the upper part of the interior space 112 into the lower part of the interior space 112 can flow laterally past the stack of plates 50 via the guide groove 114 .
  • bearing ribs 20 can also be arranged on the housing 102 and the guide grooves 114 in the side walls of the plate stack 50 is.
  • the sealing device 22 it is also possible for the sealing device 22 to be arranged in the housing 102, regardless of the arrangement of bearing ribs 20 and guide grooves 114.
  • FIG. 8 shows an isometric view of a further embodiment of the plate stack 50 according to the invention.
  • the basic structure of the plate stack is identical to the first embodiment described here, so that features, feature combinations and their specific technical advantages can be transferred to the further embodiment.
  • the stack of plates 50 according to the further embodiment differs from this in the design of the counter-receiving device 14.
  • the counter-receiving device 14 is arranged on the two end plates 11 of the plate stack 50 which face away from one another in the stacking direction 40 .
  • the counter-receiving device 14 or La skeleton 20, which form this with extends in a normal or perpendicular to the stacking direction 40 plane.
  • the counter-receiving device 14 or the bearing ribs 20 of the counter-receiving device 14 extends/extend with a main extension component at an acute angle to the flow directions in the flow channels 52, 54.
  • the counter-receiving device 14 or the bearing ribs 20 of the counter-receiving device 14 extend/extend under one acute angle to the direction of flow 64 of the first fluid and to the direction of flow 66 of the second fluid.
  • the counter-receiving device 14 or the bearing ribs 20 forming it form a V-shape on the end plates 11 .
  • the V-shaped counter-receiving device 14 carries a sealing device 22 which is connected to the axial sealing section 70 in the region of a particularly flattened tip of the V, and is in particular formed in one piece with the latter.
  • the counter-receiving device 14, more precisely the bearing ribs 20 that form it, are in particular designed in one piece with a material of the end plates 11, in particular injection-molded in one piece from a synthetic material.
  • the sealing device 22 is mounted on the bearing ribs 20 either as a separate part or sprayed in one piece with them in a 2K process or as a CIP (cured in place) seal.

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un humidificateur (100) destiné à un système de pile à combustible comprenant un carter (102) ayant au moins une entrée (104) pour un premier fluide (64), en particulier un gaz d'échappement, une entrée (108) pour un second fluide (66), en particulier de l'air d'alimentation, une sortie (106) pour le premier fluide (64) et une sortie (110) pour le second fluide (66). Un empilement de plaques (50) doté de plaques de canal (10) disposées les unes après les autres dans une direction d'empilement (40) est disposé dans le carter (102), formant des canaux d'écoulement (52, 54) séparés les uns des autres par des membranes semi-perméables. Le carter (102) présente au moins un dispositif de réception (12) qui coopère avec un dispositif de contre-réception (14) disposé sur l'empilement de plaques (50) pour le montage et l'étanchéité dudit empilement de plaques (50) dans le carter (102). L'invention concerne également ledit empilement de plaques (50).
EP22734559.2A 2021-07-30 2022-06-14 Humidificateur comprenant un empilement de plaques et un empilement de plaques Pending EP4376987A1 (fr)

Applications Claiming Priority (2)

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DE102021119892.5A DE102021119892A1 (de) 2021-07-30 2021-07-30 Befeuchtungseinrichtung mit Plattenstapel und Plattenstapel
PCT/EP2022/066116 WO2023006294A1 (fr) 2021-07-30 2022-06-14 Humidificateur comprenant un empilement de plaques et un empilement de plaques

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EP4376987A1 true EP4376987A1 (fr) 2024-06-05

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US (1) US20240145740A1 (fr)
EP (1) EP4376987A1 (fr)
CN (1) CN117715696A (fr)
DE (1) DE102021119892A1 (fr)
WO (1) WO2023006294A1 (fr)

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DE102021119823A1 (de) * 2021-07-30 2023-02-02 Mann+Hummel Gmbh Befeuchtungseinrichtung mit Kanalplatten, Trägerplatte und Kanalplatte für eine Befeuchtungseinrichtung
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DE102022112011A1 (de) 2022-05-13 2023-11-16 Mann+Hummel Gmbh Befeuchterstapel, insbesondere für ein Brennstoffzellensystem und Befeuchtungseinrichtung
EP4378570A1 (fr) * 2022-12-01 2024-06-05 MANN+HUMMEL GmbH Plaque d'empilement, dispositif de plaque d'empilement et humidificateur
DE102023209962A1 (de) * 2023-10-11 2025-04-17 Mahle International Gmbh Befeuchtereinheit, Befeuchtereinrichtung und Brennstoffzellensystem
DE102024113868A1 (de) * 2024-05-17 2025-11-20 Carl Freudenberg Kg Membranbefeuchter

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WO2023006294A1 (fr) 2023-02-02
DE102021119892A1 (de) 2023-02-02
US20240145740A1 (en) 2024-05-02
CN117715696A (zh) 2024-03-15

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