WO2009152887A1 - Humidifier - Google Patents

Humidifier Download PDF

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Publication number
WO2009152887A1
WO2009152887A1 PCT/EP2009/002244 EP2009002244W WO2009152887A1 WO 2009152887 A1 WO2009152887 A1 WO 2009152887A1 EP 2009002244 W EP2009002244 W EP 2009002244W WO 2009152887 A1 WO2009152887 A1 WO 2009152887A1
Authority
WO
WIPO (PCT)
Prior art keywords
layers
tracks
hollow fibers
humidifier
connecting means
Prior art date
Application number
PCT/EP2009/002244
Other languages
German (de)
French (fr)
Inventor
Klaus Leister
Harald Ehrentraut
Matthias Adler
Original Assignee
Carl Freudenberg Kg
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 Carl Freudenberg Kg filed Critical Carl Freudenberg Kg
Publication of WO2009152887A1 publication Critical patent/WO2009152887A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B01D63/02—Hollow fibre modules
    • B01D63/033—Specific distribution of fibres within one potting or tube-sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • 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
    • B01D63/02—Hollow fibre modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
    • F24F6/043—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements with self-sucking action, e.g. wicks
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/02—Specific tightening or locking mechanisms
    • B01D2313/025—Specific membrane holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/08—Flow guidance means within the module or the apparatus
    • B01D2313/086—Meandering flow path over the membrane
    • 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
    • B01D63/02—Hollow fibre modules
    • B01D63/026—Wafer type modules or flat-surface type modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/067—Wood fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/18—Fuel cells
    • 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 humidifier with hollow fibers.
  • a humidifier for humidifying a fuel cell supply air is known.
  • a humidified supply air is required in particular in polymer electrolyte membrane (PEM) fuel cells, since the power generation efficiency in the electrolyte membrane decreases when the electrolyte membrane dries out.
  • the prior art humidifier has a plurality of housings in each of which a number of water-permeable hollow fiber membranes are arranged.
  • a first air flow forms a water-carrying air flow and a second air flow forms a water-absorbing air flow.
  • An air stream flows around the hollow fibers and the other air flow is passed through the hollow fibers.
  • the hollow fibers are provided with spacers, in which they are wrapped, for example, individually or in groups, with a yarn.
  • the invention has for its object to produce a humidifier cost and with high efficiency.
  • the humidifier comprises hollow fibers, which are arranged in layers and fixed by a connecting means, wherein the connecting means is arranged in a plurality of tracks on the layers.
  • the connecting means adheres to the hollow fibers and fixes them with each other.
  • the hollow fibers can be aligned very flexibly and in a variety of patterns.
  • the bonding agent which is applied after alignment in tracks, fixes the hollow fibers, so that additional
  • the bonding agent is an agent which is preferably applied in liquid or pasty form to the hollow fibers and thereby allows a particularly flexible design of the tracks and then cured. Whereby, depending on the material for curing, a post-treatment, for example a thermal treatment, can be carried out.
  • the tracks of the individual layers can be arranged congruently on the layers or have an offset through which the tracks partially overlap. Since the bonding agent is applied liquid or pasty, the traces partially penetrate and there is a continuous layer which is penetrated by the hollow fibers, wherein the connecting means sealingly surrounds the hollow fibers.
  • the tracks can form separating layers.
  • the track is therefore impermeable to the outside directed around the hollow fibers air flow and thus forms an air guide.
  • the arrangement of the tracks, so their length, location and orientation determines the flow within the hollow fiber layers.
  • the traces can be used in addition to the fixation of the hollow fibers and to improve the internal air flow.
  • the tracks can be aligned transversely to the hollow fibers.
  • the tracks may also be oriented inclined to the hollow fibers. The orientation of the tracks determines the air flow within the hollow fiber layers, wherein the air flow is guided crosswise through the hollow fiber layers in an arrangement of the tracks transverse to the hollow fibers.
  • Part of the tracks may be shorter than the width of the layers.
  • a plurality of these shorter tracks may be arranged adjacent to one another on the layers.
  • the tracks can be aligned so that there is a labyrinth-like flow guidance, in which the air flow is deflected once or several times by 180 °.
  • a part of the tracks on one longitudinal side and another part of the tracks on the opposite longitudinal side of the layers is arranged. Since the length of the tracks and their arrangement can be adapted particularly easily, the flow guidance can be adapted at any time, depending on the requirements.
  • the flow guidance improves the mass transfer within the layers.
  • the flow can be conducted in alternating cross counterflow. Due to the alternating air flow, the moisture gradient is evened out.
  • One additional mixer which causes additional costs and a further pressure loss, can therefore be omitted.
  • the tracks assigned to the front sides can extend over the entire width of the layers. These two tracks form a separating layer which prevents the air stream flowing around the hollow fibers from leaving the hollow fiber layers via the end faces and mixing there with the air stream flowing into the hollow fibers.
  • the tracks can also project beyond the layers on all sides and lie sealingly on the housing wall after mounting in a housing and thereby separate the air flow flowing around the hollow fibers with respect to the air stream flowing through the hollow fibers and the environment.
  • the connecting means may be an elastomer.
  • Elastomeric materials are easy to process and adhere depending on the design sealing the hollow fibers, without the need for a pretreatment of the hollow fibers.
  • the hollow fiber layers can subsequently be deformed or bent, for example in order to mount the layers easier.
  • the hollow fibers may be fixed to their end faces with another solid connecting means.
  • the solid connection means stabilizes the layers, so that they do not deform when an air flow flows over the end faces.
  • the end faces associated with continuous tracks act as a release layer and prevent the solid bonding agent, often a resinous agent, penetrates beyond the tracks in the layers.
  • the solid bonding agent was prevented due to the centrifugal forces from penetrating too much by capillary action in the layers.
  • the layers with hollow fibers into a housing and only then to provide them with the fixed connection means, which then simultaneously fixes the hollow fiber layers in the housing. Since the fixed connection means directly adjoins the track, which is made of a flexible material, the notch stress in the hollow fiber decreases, so that the hollow fibers can be bent without breaking.
  • the hollow fibers can be arranged in layers on a frame. As a result, individual layers can be provided as semi-finished products and to
  • the hollow fibers can first form fit, for example in a
  • Comb structure and / or firmly bonded to the frame It is also conceivable to vary the hollow fiber diameter and also the packing density of the hollow fibers on the frame, so that a flow guidance also takes place by arranging frames with hollow fibers of different designs.
  • a method for producing a humidifier comprising the following steps: arranging hollow fibers in a first layer, applying a bonding agent in a plurality of tracks, placing a further layer on the first layer, applying a Connecting means on the further layer and repetition of the steps described above until the desired number of layers are present. Due to the layered structure, the alignment and spacing of the layers can be changed in each position and can be optimally adapted to the conditions of use. Additional elaborate Process steps to ensure the distance between the hollow fibers to each other, can be omitted. In particular, it is not necessary to provide each hollow fiber separately with a spacer. The alignment of the hollow fibers and the application of the tracks can be easily automated, so that hollow fiber layers can be produced with a repeatable high quality and at the same time low production costs.
  • the traces of the individual layers can at least partially overlap and penetrate.
  • the tracks of the individual layers connect and also cause a connection of the layers with each other and the distance between the superposed hollow fibers is also ensured.
  • the layers can subsequently be heat treated with the bonding agent.
  • a heat treatment when using an elastomeric material, can assist the crosslinking process of the bonding agent.
  • FIG. 1 to 4 the manufacturing method of a humidifier according to the invention
  • Fig. 5 hollow fiber layers with additional solid connection means at the end faces
  • FIG. 6 shows a humidifier with integrated flow guide
  • Fig. 7 fastens hollow fibers on a frame
  • Fig. 8 shows the arrangement shown in Figure 7 in side view.
  • FIGS. 1 to 4 the production of a humidifier 1 is shown, whereby, according to FIG. 1, initially a layer 3 consisting of hollow fibers 2 is formed. The distance and the orientation of the hollow fibers to each other depends on the requirements of the humidifier 1.
  • a connecting means here an elastomer consisting of a polyolefin, wherein the connecting means in a plurality of tracks 4, which are aligned transversely to the hollow fibers 2, is arranged on the layer 3.
  • a further layer 3.1 is arranged on the first layer 3, wherein the hollow fibers of the further layer 3.1 are likewise fixed by tracks 4 of a connecting means, as shown in FIG.
  • the tracks 4 of the layers 3, 3.1 overlap and partially penetrate and thereby form a separating layer which extends transversely to the fibers.
  • the end faces 5 of the layers 3, 3.1, ..., 3.x assigned tracks 4 extend over the entire width of the layers 3, 3.1 3.x and extend beyond the latter on the periphery.
  • the arranged between these tracks 4 further tracks 4 are aligned transversely to the hollow fibers 2, shorter than the width of the layers 3, 3.1, ..., 3.x and offset from each other, resulting in a labyrinthine flow guidance.
  • the tracks 4 form a separating layer for the medium flowing around the hollow fibers 2.
  • FIG. 5 shows the layers 3, 3.1,..., 3.x of a humidifier 1 after its production and after-treatment.
  • the layers 3, 3.1, ..., 3.x can be designed so that they are round or rectangular in cross-section Humidifier are suitable.
  • the hollow fibers 2 are fixed to the end faces 5 with a further fixed connection means 6.
  • the solid connecting means 6 consists in this embodiment of an epoxy resin.
  • the layers 3, 3.1, ..., 3.x are immersed in epoxy resin, wherein the end faces of the hollow fibers 2 were previously sealed.
  • the spaces between the hollow fibers 2 are impregnated with the solid bonding agent, wherein the end faces associated with the continuous tracks 4 prevent the solid connection means that the interstices in the interior of the layers 3, 3.1 3.x are soaked.
  • FIG. 6 shows an embodiment of a humidifier 1 in which the flow guidance of a first medium flow 7 takes place by means of deflection devices 10 which are arranged in the housing cover 9 of the humidifier 1.
  • the deflecting devices 10 for example metal sheets, separate the housing cover 9 into a plurality of media spaces and thus force a specific flow guide of the first media stream 7.
  • a cross-countercurrent of the first media stream 7 with respect to the second media stream 8 results
  • Media stream 7 be the humid air flow and the second media stream may be the air flow to be humidified, ie the fuel cell supply.
  • the hollow fibers 2 may be arranged in layers 3 according to the embodiments described above. In this embodiment, it is particularly advantageous that the steering of the air flow outside of the hollow fibers 2 or the hollow fiber bundle takes place and can be made particularly simple and inexpensive and particularly variable. With relatively little effort can in the
  • Housing cover 9 partitions that act as deflectors 10 are integrated.
  • FIG. 7 shows a layer 3 with hollow fibers 2 of a humidifier 1.
  • the hollow fibers 2 are arranged on a frame 11. This can be made of plastic or a metallic material.
  • the frame 11 comprises a peripheral edge and in this embodiment additionally formed by projections deflecting devices 10.
  • the hollow fibers 2 are fixed on the frame, in particular in the region of the edge.
  • the fixation may be positive, for example, by a comb-like structure or cohesively by an adhesive.
  • FIG. 8 which represents the side view of FIG. 7, the hollow fibers 2 in this embodiment are embedded in tracks 4 consisting of an elastomeric material, for example a polyolefin, which in turn is firmly bonded to the frame 11.
  • the tracks 4 are arranged on the edge and the deflection devices 10, so that the hollow fibers 2 are externally sealed in this area. It is also conceivable to fix the hollow fibers 2 initially only positively or non-positively on the frame and apply the sealing material, such as the polyolefin only immediately prior to assembly on the frame 11.
  • the sealing material such as the polyolefin only immediately prior to assembly on the frame 11.
  • Several frames 11 are stacked to humidifier modules, wherein the arrangement and configuration of the hollow fibers 2 per frame 11 may vary. It is also possible to connect several frames 11 by the sealing material.

Abstract

The invention relates to a humidifier (1) comprising wood fibers (2) disposed in layers (3) and fixed by a binding agent, wherein the binding agent is disposed in a plurality of tracks (4) on the layers (3).

Description

Befeuchter humidifier
Beschreibung Technisches GebietDescription Technical area
Die Erfindung betrifft einen Befeuchter mit Hohlfasern.The invention relates to a humidifier with hollow fibers.
Stand der TechnikState of the art
Aus der DE 101 02 358 ist ein Befeuchter zur Befeuchtung einer Brennstoffzellen-Zuluft bekannt. Eine befeuchtete Zuluft ist insbesondere bei Polymer-Elektrolyt-Membran (PEM) Brennstoffzellen erforderlich, da die Stromerzeugungseffizienz in der Elektrolytmembran sinkt, wenn die Elektrolytmembran austrocknet. Der vorbekannte Befeuchter weist mehrere Gehäuse auf, in denen jeweils eine Anzahl wasserdurchlässiger Hohlfasermembranen angeordnet sind. Ein erster Luftstrom bildet einen wasserführenden Luftstrom und ein zweiter Luftstrom bildet einen wasseraufnehmenden Luftstrom. Ein Luftstrom umspült die Hohlfasern und der andere Luftstrom wird durch die Hohlfasern hindurch geführt. Um zu verhindern, dass sich die Hohlfasern stellenweise zusammenballen und dadurch den Stoffaustausch behindern, werden die Hohlfasern mit Abstandshaltern versehen, in dem sie beispielsweise einzeln oder in Gruppen aufwendig mit einem Garn umwickelt werden.From DE 101 02 358 a humidifier for humidifying a fuel cell supply air is known. A humidified supply air is required in particular in polymer electrolyte membrane (PEM) fuel cells, since the power generation efficiency in the electrolyte membrane decreases when the electrolyte membrane dries out. The prior art humidifier has a plurality of housings in each of which a number of water-permeable hollow fiber membranes are arranged. A first air flow forms a water-carrying air flow and a second air flow forms a water-absorbing air flow. An air stream flows around the hollow fibers and the other air flow is passed through the hollow fibers. In order to prevent the hollow fibers from bunching up in places and thus hindering the mass transfer, the hollow fibers are provided with spacers, in which they are wrapped, for example, individually or in groups, with a yarn.
BESTATIGUNGSKOPIE Darstellung der ErfindungBESTATIGUNGSKOPIE Presentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, einen Befeuchter kostengünstig und mit hoher Effizienz herzustellen.The invention has for its object to produce a humidifier cost and with high efficiency.
Diese Aufgabe wird mit den Merkmalen der Ansprüche 1 und 9 gelöst. Auf vorteilhafte Ausgestaltungen nehmen die Unteransprüche Bezug.This object is achieved with the features of claims 1 and 9. In advantageous embodiments, the dependent claims relate.
Zur Lösung der Aufgabe umfasst der Befeuchter Hohlfasern, die in Lagen angeordnet sind und durch ein Verbindungsmittel fixiert sind, wobei das Verbindungsmittel in mehreren Spuren auf den Lagen angeordnet ist. Das Verbindungsmittel haftet an den Hohlfasern und fixiert diese untereinander. Die Hohlfasern können sehr flexibel und in verschiedensten Mustern zueinander ausgerichtet werden. Das Verbindungsmittel, welches nach dem Ausrichten in Spuren aufgebracht wird, fixiert die Hohlfasern, so dass zusätzlicheTo achieve the object of the humidifier comprises hollow fibers, which are arranged in layers and fixed by a connecting means, wherein the connecting means is arranged in a plurality of tracks on the layers. The connecting means adheres to the hollow fibers and fixes them with each other. The hollow fibers can be aligned very flexibly and in a variety of patterns. The bonding agent, which is applied after alignment in tracks, fixes the hollow fibers, so that additional
Abstandshalter entfallen können. Das Verbindungsmittel ist ein Mittel, welches vorzugsweise in flüssiger oder pastöser Form auf die Hohlfasern aufgebracht wird und dadurch eine besonders flexible Ausgestaltung der Spuren erlaubt und anschließend aushärtet. Wobei je nach Material zum Aushärten eine Nachbehandlung, beispielsweise eine thermische Behandlung, durchgeführt werden kann. Die Spuren der einzelnen Lagen können deckungsgleich auf den Lagen angeordnet werden oder einen Versatz aufweisen, durch den sich die Spuren teilweise überdecken. Da das Verbindungsmittel flüssig oder pastös aufgebracht wird, durchdringen sich die Spuren teilweise und es entsteht eine durchgehende Schicht, die von den Hohlfasern durchdrungen wird, wobei das Verbindungsmittel die Hohlfasern dichtend umschließt. Es ist auch denkbar einen Befeuchter mit flächigen Austauschermembranen bereit zu stellen, wobei die erfindungsgemäßen Verbindungsmittel die Austauschermembranen aneinander fixieren und gleichzeitig die Abstandshalter zwischen den Austauschermembranen bilden. Auch bei dieser Ausgestaltung ist denkbar, die Verbindungsmittel so anzuordnen, dass sich zwischen den Austauschermembranen eine mäanderförmige Strömungsführung und dadurch lange Verweilzeiten des durchströmenden Mediums ergeben.Spacers can be omitted. The bonding agent is an agent which is preferably applied in liquid or pasty form to the hollow fibers and thereby allows a particularly flexible design of the tracks and then cured. Whereby, depending on the material for curing, a post-treatment, for example a thermal treatment, can be carried out. The tracks of the individual layers can be arranged congruently on the layers or have an offset through which the tracks partially overlap. Since the bonding agent is applied liquid or pasty, the traces partially penetrate and there is a continuous layer which is penetrated by the hollow fibers, wherein the connecting means sealingly surrounds the hollow fibers. It is also conceivable to provide a humidifier with flat exchanger membranes, with the inventive connecting means fixing the exchanger membranes together and at the same time forming the spacers between the exchanger membranes. Also in this embodiment is conceivable that Arranging connecting means so that a meandering flow guidance and thus long residence times of the medium flowing through arise between the exchanger membranes.
Die Spuren können Trennschichten bilden. Die Spur ist demnach für den außen um die Hohlfasern gelenkten Luftstrom undurchlässig und bildet somit eine Luftführung. Die Anordnung der Spuren, also deren Länge, Lage und Ausrichtung bestimmt die Strömung innerhalb der Hohlfaserlagen. Die Spuren können neben der Fixierung der Hohlfasern auch zur Verbesserung der inneren Luftführung eingesetzt werden.The tracks can form separating layers. The track is therefore impermeable to the outside directed around the hollow fibers air flow and thus forms an air guide. The arrangement of the tracks, so their length, location and orientation determines the flow within the hollow fiber layers. The traces can be used in addition to the fixation of the hollow fibers and to improve the internal air flow.
Die Spuren können quer zu den Hohlfasern ausgerichtet sein. In anderen Ausgestaltungen können die Spuren auch geneigt zu den Hohlfasern ausgerichtet sein. Die Ausrichtung der Spuren bestimmt die Luftführung innerhalb der Hohlfaserlagen, wobei der Luftstrom bei einer Anordnung der Spuren quer zu den Hohlfasern im Kreuzstrom durch die Hohlfaserlagen geführt wird.The tracks can be aligned transversely to the hollow fibers. In other embodiments, the tracks may also be oriented inclined to the hollow fibers. The orientation of the tracks determines the air flow within the hollow fiber layers, wherein the air flow is guided crosswise through the hollow fiber layers in an arrangement of the tracks transverse to the hollow fibers.
Ein Teil der Spuren kann kürzer sein als die Breite der Lagen. Dabei können mehrere dieser kürzeren Spuren benachbart zueinander auf den Lagen angeordnet sein. Dabei können die Spuren so ausgerichtet sein, dass sich eine labyrinthartige Strömungsführung ergibt, bei der der Luftstrom einfach oder mehrfach um 180° umgelenkt wird. Dazu wird ein Teil der Spuren an einer Längsseite und ein anderer Teil der Spuren an der gegenüber liegenden Längsseite der Lagen angeordnet. Da die Länge der Spuren und deren Anordnung besonders einfach angepasst werden können, kann je nach Anforderung die Strömungsführung jederzeit angepasst werden. Durch die Strömungsführung verbessert sich der Stoffaustausch innerhalb der Lagen. Die Strömung kann im alternierenden Kreuzgegenstrom geführt werden. Durch die alternierende Luftführung vergleichmäßigt sich der Feuchtegradient. Ein zusätzlicher Mischer, der zusätzliche Kosten und einen weiteren Druckverlust verursacht, kann daher entfallen.Part of the tracks may be shorter than the width of the layers. In this case, a plurality of these shorter tracks may be arranged adjacent to one another on the layers. The tracks can be aligned so that there is a labyrinth-like flow guidance, in which the air flow is deflected once or several times by 180 °. For this purpose, a part of the tracks on one longitudinal side and another part of the tracks on the opposite longitudinal side of the layers is arranged. Since the length of the tracks and their arrangement can be adapted particularly easily, the flow guidance can be adapted at any time, depending on the requirements. The flow guidance improves the mass transfer within the layers. The flow can be conducted in alternating cross counterflow. Due to the alternating air flow, the moisture gradient is evened out. One additional mixer, which causes additional costs and a further pressure loss, can therefore be omitted.
Die den Stirnseiten zugeordneten Spuren können sich über die gesamte Breite der Lagen erstrecken. Diese beiden Spuren bilden eine Trennschicht, die verhindert, dass der die Hohlfasern umströmende Luftstrom über die Stirnseiten die Hohlfaserlagen verlässt und sich dort mit dem in die Hohlfasern strömenden Luftstrom vermischt. Die Spuren können auch die Lagen allseitig überragen und nach Montage in ein Gehäuse dichtend an der Gehäusewandung anliegen und dadurch den die Hohlfasern umströmenden Luftstrom gegenüber dem die Hohlfasern durchströmenden Luftstrom sowie der Umgebung trennen.The tracks assigned to the front sides can extend over the entire width of the layers. These two tracks form a separating layer which prevents the air stream flowing around the hollow fibers from leaving the hollow fiber layers via the end faces and mixing there with the air stream flowing into the hollow fibers. The tracks can also project beyond the layers on all sides and lie sealingly on the housing wall after mounting in a housing and thereby separate the air flow flowing around the hollow fibers with respect to the air stream flowing through the hollow fibers and the environment.
Das Verbindungsmittel kann ein Elastomer sein. Elastomere Werkstoffe sind einfach zu verarbeiten und haften je nach Ausgestaltung dichtend an den Hohlfasern, ohne dass es einer Vorbehandlung der Hohlfasern bedarf. Des Weiteren können die Hohlfaserlagen anschließend noch verformt oder gebogen werden, beispielsweise um die Lagen einfacher montieren zu können.The connecting means may be an elastomer. Elastomeric materials are easy to process and adhere depending on the design sealing the hollow fibers, without the need for a pretreatment of the hollow fibers. Furthermore, the hollow fiber layers can subsequently be deformed or bent, for example in order to mount the layers easier.
Die Hohlfasern können an deren Stirnseiten mit einem weiteren festen Verbindungsmittel fixiert sein. Das feste Verbindungsmittel bewirkt eine Stabilisierung der Lagen, so dass sich diese bei einer Anströmung eines Luftstroms über die Stirnseiten nicht verformen. Bei der erfindungsgemäßen Ausgestaltung ist besonders vorteilhaft, dass die den Stirnseiten zugeordneten durchgehenden Spuren als Trennschicht wirken und verhindern, dass das feste Verbindungsmittel, häufig ein harzhaltiges Mittel, über die Spuren hinaus in die Lagen eindringt. Dazu war es bisher bekannt, die Lagen in Rotation zu versetzen, so dass das feste Verbindungsmittel aufgrund der Fliehkräfte daran gehindert war, durch Kapillarwirkung zu sehr in die Lagen einzudringen. Durch die Ausbildung der Spuren als Trennschicht kann dieser Verfahrensschritt entfallen und es vereinfacht sich die Herstellung eines Befeuchters. Insbesondere ist es möglich, die Lagen mit Hohlfasern in ein Gehäuse zu integrieren und erst anschließend mit dem festen Verbindungsmittel zu versehen, welches dann auch gleichzeitig die Hohlfaserlagen in dem Gehäuse fixiert. Da das feste Verbindungsmittel unmittelbar an die Spur angrenzt, die aus einem flexiblen Material besteht, verringert sich die Kerbspannung in der Hohlfaser, so dass die Hohlfasern ohne zu brechen gebogen werden können.The hollow fibers may be fixed to their end faces with another solid connecting means. The solid connection means stabilizes the layers, so that they do not deform when an air flow flows over the end faces. In the embodiment according to the invention is particularly advantageous that the end faces associated with continuous tracks act as a release layer and prevent the solid bonding agent, often a resinous agent, penetrates beyond the tracks in the layers. For this purpose, it was previously known to put the layers in rotation, so that the solid bonding agent was prevented due to the centrifugal forces from penetrating too much by capillary action in the layers. By forming the tracks as a separating layer of this process step eliminates the need to make a humidifier. In particular, it is possible to integrate the layers with hollow fibers into a housing and only then to provide them with the fixed connection means, which then simultaneously fixes the hollow fiber layers in the housing. Since the fixed connection means directly adjoins the track, which is made of a flexible material, the notch stress in the hollow fiber decreases, so that the hollow fibers can be bent without breaking.
Die Hohlfasern könne in Lagen auf einem Rahmen angeordnet sein. Dadurch können einzelne Lagen als Halbzeuge bereit gestellt werden und zuThe hollow fibers can be arranged in layers on a frame. As a result, individual layers can be provided as semi-finished products and to
Befeuchtermodulen aufgeschichtet und durch Spuren luftdicht miteinander verbunden werden. Es ist des Weiteren denkbar, in den Rahmen Umlenkeinrichtungen zu integrieren, die in dem Befeuchter eine Strömungsführung beispielsweise im Kreuz-Gegenstrom ermöglichen. Dazu können die Hohlfasern zunächst formschlüssig, beispielsweise in einerMoistened humidifier modules and connected by tracks airtight. It is also conceivable to integrate deflection devices in the frame, which allow a flow guidance in the humidifier, for example in cross-counterflow. For this purpose, the hollow fibers can first form fit, for example in a
Kammstruktur und/oder stoffschlüssig auf dem Rahmen befestigt werden. Es ist ferner denkbar, die Hohlfaserdurchmesser und auch die Packungsdichte der Hohlfasern auf den Rahmen zu variieren, so dass auch durch Anordnung von Rahmen mit Hohlfasern in unterschiedlicher Ausführung eine Strömungsführung erfolgt.Comb structure and / or firmly bonded to the frame. It is also conceivable to vary the hollow fiber diameter and also the packing density of the hollow fibers on the frame, so that a flow guidance also takes place by arranging frames with hollow fibers of different designs.
Die Aufgabe wird auch durch ein Verfahren zur Herstellung eines Befeuchters nach einem der vorherigen Ansprüche gelöst, welches die folgenden Schritte umfasst: Anordnen von Hohlfasern in einer ersten Lage, Aufbringen eines Verbindungsmittels in mehreren Spuren, Anordnen einer weiteren Lage auf die erste Lage, Aufbringen eines Verbindungsmittels auf die weitere Lage und Wiederholung der zuvor beschriebenen Schritte bis die gewünschte Anzahl von Lagen vorliegen. Durch den lagenweisen Aufbau können die Ausrichtung und der Abstand der Lagen zueinander in jeder Lage geändert werden und so optimal auf die Einsatzbedingungen angepasst werden. Zusätzliche aufwendige Verfahrensschritte, um den Abstand der Hohlfasern zueinander zu gewährleisten, können entfallen. Es ist insbesondere nicht notwendig, jede Hohlfaser separat mit einem Abstandshalter zu versehen. Das Ausrichten der Hohlfasern und das Aufbringen der Spuren lassen sich einfach automatisieren, so dass Hohlfaserlagen mit einer wiederholbaren hohen Qualität bei gleichzeitig geringen Herstellkosten hergestellt werden können.The object is also achieved by a method for producing a humidifier according to one of the preceding claims, comprising the following steps: arranging hollow fibers in a first layer, applying a bonding agent in a plurality of tracks, placing a further layer on the first layer, applying a Connecting means on the further layer and repetition of the steps described above until the desired number of layers are present. Due to the layered structure, the alignment and spacing of the layers can be changed in each position and can be optimally adapted to the conditions of use. Additional elaborate Process steps to ensure the distance between the hollow fibers to each other, can be omitted. In particular, it is not necessary to provide each hollow fiber separately with a spacer. The alignment of the hollow fibers and the application of the tracks can be easily automated, so that hollow fiber layers can be produced with a repeatable high quality and at the same time low production costs.
Die Spuren der einzelnen Lagen können sich zumindest teilweise überdecken und durchdringen. Dadurch verbinden sich die Spuren der einzelnen Lagen und bewirken auch eine Verbindung der Lagen untereinander und der Abstand der übereinander angeordneten Hohlfasern ist ebenfalls gewährleistet.The traces of the individual layers can at least partially overlap and penetrate. As a result, the tracks of the individual layers connect and also cause a connection of the layers with each other and the distance between the superposed hollow fibers is also ensured.
Die Lagen können mit dem Verbindungsmittel im Anschluss wärmebehandelt werden. Eine Wärmebehandlung kann, bei einer Verwendung eines elastomeren Materials, den Vernetzungsprozess des Verbindungsmittels unterstützen.The layers can subsequently be heat treated with the bonding agent. A heat treatment, when using an elastomeric material, can assist the crosslinking process of the bonding agent.
Kurzbeschreibung der ZeichnungBrief description of the drawing
Einige Ausführungsbeispiele des erfindungsgemäßen Befeuchters werden nachfolgend anhand der Figuren näher erläutert. Diese zeigen, jeweils schematisch:Some embodiments of the humidifier according to the invention are explained below with reference to the figures. These show, in each case schematically:
Fig. 1 bis 4 das Herstellverfahren eines erfindungsgemäßen Befeuchters; Fig. 5 Hohlfaserlagen mit zusätzlichen festen Verbindungsmitteln an den Stirnseiten;Fig. 1 to 4, the manufacturing method of a humidifier according to the invention; Fig. 5 hollow fiber layers with additional solid connection means at the end faces;
Fig. 6 ein Befeuchter mit integrierter Strömungsführung;6 shows a humidifier with integrated flow guide;
Fig. 7 Hohlfasern auf einem Rahmen befestigt;Fig. 7 fastens hollow fibers on a frame;
Fig. 8 die in Figur 7 gezeigte Anordnung in der Seitenansicht. Ausführung der ErfindungFig. 8 shows the arrangement shown in Figure 7 in side view. Embodiment of the invention
In den Figuren 1 bis 4 ist die Herstellung eines Befeuchters 1 gezeigt, wobei gemäß Figur 1 zunächst eine Lage 3 bestehend aus Hohlfasern 2 gebildet wird. Der Abstand und die Ausrichtung der Hohlfasern zueinander richtet sich nach den Anforderungen an den Befeuchter 1. In einem anschließenden Schritt gemäß Figur 2 werden die in der Lage 3 angeordneten Hohlfasern 2 durch ein Verbindungsmittel, hier ein Elastomer bestehend aus einem Polyolefin fixiert, wobei das Verbindungsmittel in mehreren Spuren 4, die quer zu den Hohlfasern 2 ausgerichtet sind, auf der Lage 3 angeordnet ist. Anschließend wird, wie in Figur 3 gezeigt, eine weitere Lage 3.1 auf der ersten Lage 3 angeordnet, wobei die Hohlfasern der weiteren Lage 3.1 ebenfalls durch Spuren 4 eines Verbindungsmittels fixiert werden, wie in Figur 4 gezeigt wird. Dabei überdecken sich die Spuren 4 der Lagen 3, 3.1 und durchdringen sich teilweise und bilden dadurch eine Trennschicht, die sich quer zu den Fasern erstreckt. Diese Schritte werden wiederholt, bis die gewünschte Anzahl an Lagen 3.x vorliegt. Im Anschluss werden die Lagen 3, 3.1 3.x wärmebehandelt, um die Vernetzung des Verbindungsmittels zu beschleunigen.In FIGS. 1 to 4, the production of a humidifier 1 is shown, whereby, according to FIG. 1, initially a layer 3 consisting of hollow fibers 2 is formed. The distance and the orientation of the hollow fibers to each other depends on the requirements of the humidifier 1. In a subsequent step according to Figure 2 arranged in the layer 3 hollow fibers 2 are fixed by a connecting means, here an elastomer consisting of a polyolefin, wherein the connecting means in a plurality of tracks 4, which are aligned transversely to the hollow fibers 2, is arranged on the layer 3. Subsequently, as shown in FIG. 3, a further layer 3.1 is arranged on the first layer 3, wherein the hollow fibers of the further layer 3.1 are likewise fixed by tracks 4 of a connecting means, as shown in FIG. In this case, the tracks 4 of the layers 3, 3.1 overlap and partially penetrate and thereby form a separating layer which extends transversely to the fibers. These steps are repeated until the desired number of layers 3.x is present. Thereafter, the layers 3, 3.1 3.x are heat treated to accelerate the crosslinking of the bonding agent.
Die den Stirnseiten 5 der Lagen 3, 3.1 ,... , 3.x zugeordneten Spuren 4 erstrecken sich über die gesamte Breite der Lagen 3, 3.1 3.x und ragen umfangsseitig über diese hinaus. Die zwischen diesen Spuren 4 angeordneten weiteren Spuren 4 sind quer zu den Hohlfasern 2 ausgerichtet, kürzer als die Breite der Lagen 3, 3.1 ,..., 3.x und versetzt zueinander angeordnet, wodurch sich eine labyrinthartige Strömungsführung ergibt. Dabei bilden die Spuren 4 eine Trennschicht für das die Hohlfasern 2 umströmende Medium.The end faces 5 of the layers 3, 3.1, ..., 3.x assigned tracks 4 extend over the entire width of the layers 3, 3.1 3.x and extend beyond the latter on the periphery. The arranged between these tracks 4 further tracks 4 are aligned transversely to the hollow fibers 2, shorter than the width of the layers 3, 3.1, ..., 3.x and offset from each other, resulting in a labyrinthine flow guidance. The tracks 4 form a separating layer for the medium flowing around the hollow fibers 2.
Figur 5 zeigt die Lagen 3, 3.1 , ... , 3.x eines Befeuchters 1 nach deren Herstellung und Nachbehandlung. Die Lagen 3, 3.1 , ..., 3.x können so ausgebildet sein, dass sie für einen im Querschnitt runden oder rechteckigen Befeuchter geeignet sind. Die Hohlfasern 2 sind an deren Stirnseiten 5 mit einem weiteren festen Verbindungsmittel 6 fixiert. Das feste Verbindungsmittel 6 besteht in dieser Ausführung aus einem Epoxydharz. Zum Auftragen des festen Verbindungsmittels 6 werden die Lagen 3, 3.1 , ... , 3.x in Epoxydharz getaucht, wobei die Stirnseiten der Hohlfasern 2 zuvor verschlossen wurden. Die Zwischenräume zwischen den Hohlfasern 2 werden mit dem festen Verbindungsmittel getränkt, wobei die den Stirnseiten zugeordneten durchgehenden Spuren 4 das feste Verbindungsmittel verhindern, dass auch die Zwischenräume im inneren der Lagen 3, 3.1 3.x getränkt werden.FIG. 5 shows the layers 3, 3.1,..., 3.x of a humidifier 1 after its production and after-treatment. The layers 3, 3.1, ..., 3.x can be designed so that they are round or rectangular in cross-section Humidifier are suitable. The hollow fibers 2 are fixed to the end faces 5 with a further fixed connection means 6. The solid connecting means 6 consists in this embodiment of an epoxy resin. For applying the solid bonding agent 6, the layers 3, 3.1, ..., 3.x are immersed in epoxy resin, wherein the end faces of the hollow fibers 2 were previously sealed. The spaces between the hollow fibers 2 are impregnated with the solid bonding agent, wherein the end faces associated with the continuous tracks 4 prevent the solid connection means that the interstices in the interior of the layers 3, 3.1 3.x are soaked.
Figur 6 zeigt eine Ausgestaltung eines Befeuchters 1 bei dem die Strömungsführung eines ersten Medienstroms 7 durch Umlenkeinrichtungen 10, die im Gehäusedeckel 9 des Befeuchters 1 angeordnet sind, erfolgt. Die Umlenkeinrichtungen 10, beispielsweise Bleche, trennen den Gehäusedeckel 9 in mehrere Medienräume und erzwingen so eine bestimmte Strömungsführung des ersten Medienstroms 7. In dieser Ausgestaltung ergibt sich ein Kreuz- Gegenstrom des ersten Medienstroms 7 in Bezug zu dem zweiten Medienstrom 8. Dabei kann der erste Medienstrom 7 der feuchte Luftstrom sein und der zweite Medienstrom kann der zu befeuchtende Luftstrom, also die Brennstoffzellenzuluft sein. Die Hohlfasern 2 können gemäß den zuvor beschriebenen Ausführungsbeispielen in Lagen 3 angeordnet sein. Bei dieser Ausgestaltung ist insbesondere vorteilhaft, dass die Lenkung des Luftstroms außerhalb der Hohlfasern 2 oder des Hohlfaserbündels erfolgt und so besonders einfach und kostengünstig und besonders variabel hergestellt werden kann. Mit verhältnismäßig wenig Aufwand können in dieFIG. 6 shows an embodiment of a humidifier 1 in which the flow guidance of a first medium flow 7 takes place by means of deflection devices 10 which are arranged in the housing cover 9 of the humidifier 1. The deflecting devices 10, for example metal sheets, separate the housing cover 9 into a plurality of media spaces and thus force a specific flow guide of the first media stream 7. In this embodiment, a cross-countercurrent of the first media stream 7 with respect to the second media stream 8 results Media stream 7 be the humid air flow and the second media stream may be the air flow to be humidified, ie the fuel cell supply. The hollow fibers 2 may be arranged in layers 3 according to the embodiments described above. In this embodiment, it is particularly advantageous that the steering of the air flow outside of the hollow fibers 2 or the hollow fiber bundle takes place and can be made particularly simple and inexpensive and particularly variable. With relatively little effort can in the
Gehäusedeckel 9 Trennwände, die als Umlenkeinrichtungen 10 fungieren, integriert werden.Housing cover 9 partitions that act as deflectors 10 are integrated.
Figur 7 zeigt eine Lage 3 mit Hohlfasern 2 eines Befeuchters 1. Die Hohlfasern 2 sind auf einem Rahmen 11 angeordnet. Dieser kann aus Kunststoff oder einem metallischen Material bestehen. Der Rahmen 11 umfasst eine umlaufende Kante und in dieser Ausgestaltung zusätzlich durch Vorsprünge gebildete Umlenkeinrichtungen 10. Die Hohlfasern 2 sind auf dem Rahmen, insbesondere im Bereich der Kante fixiert. Die Fixierung kann formschlüssig, beispielsweise durch ein kammartige Struktur oder stoffschlüssig durch ein Klebemittel erfolgen. Gemäß Figur 8, die die Seitenansicht der Figur 7 darstellt, sind die Hohlfasern 2 in dieser Ausgestaltung in Spuren 4, bestehend aus einem elastomeren Material, beispielsweise einem Polyolefin, eingebettet, welches wiederum mit dem Rahmen 11 stoffschlüssig verbunden ist. Die Spuren 4 sind auf der Kante und dem Umlenkeinrichtungen 10 angeordnet, so dass die Hohlfasern 2 in diesen Bereich äußerlich abgedichtet sind. Es ist auch denkbar, die Hohlfasern 2 zunächst nur form- oder kraftschlüssig auf dem Rahmen zu fixieren und das abdichtende Material, beispielsweise das Polyolefin erst unmittelbar vor der Montage auf den Rahmen 11 aufzubringen. Mehrere Rahmen 11 werden zu Befeuchtermodulen übereinander geschichtet, wobei die Anordnung und Ausgestaltung der Hohlfasern 2 je Rahmen 11 variieren kann. Es ist auch möglich, mehrere Rahmen 11 durch das abdichtende Material zu verbinden. FIG. 7 shows a layer 3 with hollow fibers 2 of a humidifier 1. The hollow fibers 2 are arranged on a frame 11. This can be made of plastic or a metallic material. The frame 11 comprises a peripheral edge and in this embodiment additionally formed by projections deflecting devices 10. The hollow fibers 2 are fixed on the frame, in particular in the region of the edge. The fixation may be positive, for example, by a comb-like structure or cohesively by an adhesive. According to FIG. 8, which represents the side view of FIG. 7, the hollow fibers 2 in this embodiment are embedded in tracks 4 consisting of an elastomeric material, for example a polyolefin, which in turn is firmly bonded to the frame 11. The tracks 4 are arranged on the edge and the deflection devices 10, so that the hollow fibers 2 are externally sealed in this area. It is also conceivable to fix the hollow fibers 2 initially only positively or non-positively on the frame and apply the sealing material, such as the polyolefin only immediately prior to assembly on the frame 11. Several frames 11 are stacked to humidifier modules, wherein the arrangement and configuration of the hollow fibers 2 per frame 11 may vary. It is also possible to connect several frames 11 by the sealing material.

Claims

Patentansprüche claims
1. Befeuchter (1), umfassend Hohlfasern (2), die in Lagen (3) angeordnet sind und durch ein Verbindungsmittel fixiert sind, wobei das Verbindungsmittel in mehreren Spuren (4) auf den Lagen (3) angeordnet ist.A humidifier (1) comprising hollow fibers (2) arranged in layers (3) and fixed by a connecting means, the connecting means being arranged in a plurality of tracks (4) on the layers (3).
2. Befeuchter nach Anspruch 1 , dadurch gekennzeichnet, dass die Spuren (4) Trennschichten bilden.2. Humidifier according to claim 1, characterized in that the tracks (4) form separating layers.
3. Befeuchter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Spuren (4) quer zu den Hohlfasern (2) ausgerichtet sind.3. Humidifier according to claim 1 or 2, characterized in that the tracks (4) are aligned transversely to the hollow fibers (2).
4. Befeuchter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Teil der Spuren (4) kürzer ist als die Breite der Lagen (3).4. Humidifier according to one of claims 1 to 3, characterized in that a part of the tracks (4) is shorter than the width of the layers (3).
5. Befeuchter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sich die den Stirnseiten (5) zugeordneten Spuren (4) über die gesamte Breite der Lagen (3) erstrecken.5. Humidifier according to one of claims 1 to 4, characterized in that the end faces (5) associated tracks (4) over the entire width of the layers (3) extend.
6. Befeuchter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Verbindungsmittel ein Elastomer ist.6. Humidifier according to one of claims 1 to 5, characterized in that the connecting means is an elastomer.
7. Befeuchter nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Spuren (4) eine Strömungsführung bilden.7. Humidifier according to one of claims 1 to 6, characterized in that the tracks (4) form a flow guide.
8. Befeuchter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Hohlfasern (2) an deren Stirnseiten (5) mit einem weiteren festen Verbindungsmittel (6) fixiert sind. 8. humidifier according to one of claims 1 to 7, characterized in that the hollow fibers (2) are fixed to the end faces (5) with a further fixed connection means (6).
9. Befeuchter nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Hohlfasern (2) in Lagen (3) auf einem Rahmen (1 1) angeordnet sind.9. humidifier according to one of claims 1 to 8, characterized in that the hollow fibers (2) in layers (3) on a frame (1 1) are arranged.
10. Verfahren zur Herstellung eines Befeuchters (1) nach einem der vorherigen Ansprüche, umfassen die folgenden Schritte:10. A method for producing a humidifier (1) according to one of the preceding claims, comprising the following steps:
- Anordnen von Hohlfasern (2) in einer ersten Lage (3)Arranging hollow fibers (2) in a first layer (3)
- Aufbringen eines Verbindungsmittels in mehreren Spuren (4)Application of a bonding agent in several tracks (4)
- Anordnen einer weiteren Lage (3.1) auf die erste Lage (3) - Aufbringen eines Verbindungsmittels auf die weitere Lage (3.1)- placing a further layer (3.1) on the first layer (3) - applying a bonding agent to the further layer (3.1)
- Wiederholung der zuvor beschriebenen Schritte bis die gewünschte Anzahl von Lagen (3.x) vorliegen.Repeat the steps described above until the desired number of layers (3.x) are present.
11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass sich die Spuren (4) der einzelnen Lagen (3) zumindest teilweise überdecken und durchdringen.11. The method according to claim 10, characterized in that the tracks (4) of the individual layers (3) at least partially overlap and penetrate.
12. Verfahren nach Anspruch 10 oder 11 , dadurch gekennzeichnet, dass die Lagen (3) mit dem Verbindungsmittel im Anschluss wärmebehandelt werden. 12. The method according to claim 10 or 11, characterized in that the layers (3) are subsequently heat treated with the connecting means.
PCT/EP2009/002244 2008-06-19 2009-03-27 Humidifier WO2009152887A1 (en)

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