WO2015176900A1 - Module filtrant à fibres creuses - Google Patents

Module filtrant à fibres creuses Download PDF

Info

Publication number
WO2015176900A1
WO2015176900A1 PCT/EP2015/058635 EP2015058635W WO2015176900A1 WO 2015176900 A1 WO2015176900 A1 WO 2015176900A1 EP 2015058635 W EP2015058635 W EP 2015058635W WO 2015176900 A1 WO2015176900 A1 WO 2015176900A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
housing
compensation element
filter module
module according
Prior art date
Application number
PCT/EP2015/058635
Other languages
German (de)
English (en)
Inventor
Michael Fasold
Original Assignee
Mann+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+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Publication of WO2015176900A1 publication Critical patent/WO2015176900A1/fr

Links

Classifications

    • 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
    • B01D63/021—Manufacturing thereof
    • B01D63/022—Encapsulating hollow fibres
    • B01D63/0221—Encapsulating hollow fibres using a mould
    • 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
    • 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
    • B01D2313/04—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
    • B01D2313/04—Specific sealing means
    • B01D2313/041—Gaskets or O-rings
    • 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

Definitions

  • the invention relates to a filter module with hollow fibers, which are clamped between two Pottitch, according to the preamble of claim 1.
  • Such a filter module is known from WO 2013/100677 A1.
  • the filter module is used as a moistening device for the moisture accumulation of a dry air stream, in that water-vapor-permeable hollow fibers of the filter module, through which the dry air stream is passed, are flowed through in the radial direction by a moisture-enriched air stream.
  • the filter module has a filter unit, which is inserted into a receiving filter housing and comprises numerous hollow fibers, which are clamped between two end pottings.
  • the pottings are sealed off from the housing inner wall of the filter housing by means of sealing rings which extend on the outer circumference of the potting.
  • the sealing element can assume a compensation or compensation function in order to compensate thermal changes in length of the filter housing or pottings.
  • the outer wall of the annular potting rests against the inner wall of the housing and the circumferential sealing element is located only in the region of an axial end face of the potting; if accidentally a frictional connection between the potting and the housing inner wall occurs, no length compensation is possible.
  • the sealing element extends over the entire radial outside of the potting.
  • the sealing body of the sealing element between the Pottung and the housing inner wall is thin-walled, so that axial length changes can be performed only to a very small extent by the sealing element and there is a risk that axial forces lead to destruction of the hollow fibers. Disclosure of the invention
  • the object of the invention is to design a filter module with hollow fibers with simple structural measures in such a way that a compensation of changes in length is possible and a functional impairment of the filter module is avoided.
  • the filter module according to the invention can be used as moistening device to enrich a gas stream with moisture.
  • the filter module is used, for example, as a humidifying device for the air to be supplied to a fuel cell.
  • the filter module comprises a filter housing and a filter unit which can be inserted into the filter housing and which comprises a multiplicity of hollow fibers whose walls are permeable to water vapor and which are clamped axially between two pots.
  • the hollow fibers may optionally be combined into bundles, wherein each bundle is associated with two end-side, axially opposite pottings and the pottings of the fiber bundles are each received in a housing-side component, for example a frame with grid.
  • this is preferably supported without additional housing component on the housing inner wall.
  • a compensation element between a potting and the filter housing or the receiving housing component, which has a length compensation section.
  • the compensation element is on the one hand firmly connected to the filter housing or the female housing component and on the other hand firmly connected to the potting.
  • the compensation element is preferably of annular design and closes the space lying between the two pottings in a flow-tight manner from the space lying axially outside the compensation element.
  • the compensation element takes over in addition to the length compensation also a sealing function, so that can be dispensed with an additional sealing element.
  • the compensation element has the task of encasing and framing the potting and supporting the potting against the receiving housing component or the housing inner wall.
  • the compensation element By means of the compensation element, it is possible to compensate thermally induced changes in length.
  • the hollow fibers, but also the receiving filter housing and Pottungen stretch or contract with thermal changes, with relative, axial length changes between the recorded in the filter housing filter unit and the filter housing over the compensation element are compensated.
  • the hollow fibers are thereby relieved of axial forces, so that the risk of destruction of the hollow fibers is significantly reduced.
  • the compensation element has a length compensation section, which is located between the connection point of filter housing or receiving housing component to the compensation element on the one hand and the junction of compensation element for potting on the other. The length compensation section thus lies between the connection points and bridges the connection points.
  • the change in length is carried out by the length compensation section, so that the connection points of the compensation element to the filter housing and potting need not perform a relative movement; the relative movement is carried out primarily, preferably exclusively by the length compensation section of the compensation element. This is in particular formed integrally with the connection points of the compensation element.
  • the length compensation portion of the compensation element has, according to an advantageous embodiment, a deformable wall, which is able to perform the desired length compensation by their structural design.
  • the length compensation section is designed, for example, as a deformable wall with reduced thickness in the manner of a film hinge.
  • the compensation element may be advantageous to arrange on the housing inner wall a radially inwardly projecting stop which controls the axial adjusting movement of the compensation element limited.
  • the inwardly projecting stop for example, designed as Umlaufring- shoulder, which is introduced into the housing inner wall.
  • the compensation element preferably abuts against the stop on the inner side of the housing wall with a stop block, wherein the stop block is formed integrally with the compensation element and, in particular, is designed as connection points fixedly arranged on the potting.
  • the annular compensation element is advantageously located on the outside of the potting and encompasses these. This has the advantage that the compensation element at the same time forms a radial support and guide against the housing inner wall and direct contact between the potting and the housing inner wall is avoided.
  • the compensation element can in this case be dimensioned so that an annular gap remains between the outer side of the compensation element and the housing inner wall, which allows an at least largely force-free axial length compensation movement.
  • the compensation element rests against the housing inner wall, so that a backlash-free support is provided in the radial direction.
  • only one potting is connected via a compensating element to the receiving housing component or the filter housing, but not the second, axially opposite potting, which is preferably connected fixedly and without axial length compensation to the filter housing.
  • both versions come into consideration, in which the second potting in both axial directions is firmly held on the filter housing and embodiments in which only borrowed in an axial direction a firm connection to the filter housing is given, but not in the opposite axial direction.
  • This makes it possible, for example, to introduce the filter unit with hollow fibers and pottings into the receiving filter housing via an open end face and to support the potting adjacent to the bottom of the filter housing on a radially inwardly projecting shoulder on the housing inner wall.
  • the compensation element is designed for example as a plastic component, for example as a thermoplastic such as polypropylene.
  • the firm connection between the compensation element and the filter housing or the receiving housing component is preferably carried out by means of welding, for example by ultrasonic welding.
  • the firm connection with the compensation element and the potting can be made by gluing.
  • FIG. 1 shows a filter module in longitudinal section, with a filter unit, which comprises hollow fibers between end pottings, wherein the filter unit is inserted into a filter housing, with a compensation element in the region of a Pottung
  • FIG. 2 shows a filter module in a further embodiment in longitudinal section
  • Fig. 3 shows a further filter module in longitudinal section.
  • FIGS. 1 to 3 each show a filter module 1 which can be used, for example, as a humidifying device for humidifying the air to be supplied to a fuel cell.
  • the filter module 1 consists of a filter housing 2 and an insertable into the filter housing 2 filter unit 3, which comprises a plurality of hollow fibers 4 and end pottings 5 and 6, in which the hollow fibers 4 are firmly received.
  • the hollow fibers 4 are preferably made of polymer, whereby an embodiment of another material such as ceramic is also suitable.
  • the material of the hollow fibers is water vapor permeable.
  • a dry air stream is introduced according to arrow 8.
  • recesses 10 which are introduced into the wall of the filter housing 2, in the radial direction, a moist air flow according to the arrows 9 in the interior of the filter housing. 2 initiated.
  • the moisture from the moist air stream 9 can enter the hollow fibers 4 through the water vapor permeable walls, so that the moisture is absorbed by the axial air flow in the hollow fibers 4.
  • the first potting 5 is connected via a compensation element 1 1 with the wall of the filter housing 2.
  • the compensation element 1 1 consists of a plastic such as a thermoplastic and has the task of performing a length compensation between the female filter housing 2 and the filter unit 3 used.
  • the compensation element 1 1 has the task of sealing the potting 5 with respect to the filter housing 2.
  • the compensation element 1 1 also serves to guide and support the Pottung 5 in the radial direction relative to the filter housing. 2
  • the compensation element 1 1 is annular and is located on the radially outer side of the Pottung 5.
  • the compensation element 1 1 has a first connection portion 1 1 a, which is fixed to the radially outer side of Pottung 5, a second connecting portion. 1 1 c, which is fixedly connected to the front side of the filter housing 2 and an intermediate, the connecting portions 1 1 a and 1 1 c connecting, integrally with the connecting portion performed length compensation section 1 1 b.
  • the length compensation portion 1 1 b has a thinner wall, which allows a deformation of the length compensation portion 1 1 b and a relative movement between the connecting portions 1 1 a and 1 1 c.
  • the first connecting portion 1 1 a is connected, for example, by gluing with the radially outer side of Pottung 5, the second connecting portion 1 1 c, for example, by welding such as friction welding with the front side of the filter housing 2 is connected.
  • the thin-walled length compensation portion 1 1 b of the compensation element 1 1 is due to its mobility in a position to compensate for an axial relative movement between the filter housing 2 and filter unit 3 and thus between the connecting portions 1 1 a and 1 1 c.
  • thermally induced strains and contractions between the filter housing 2 and the filter unit 3 over the length compensation section 1 1 b compensated, so that the sensitive hollow fibers 4 are relieved of longitudinal forces, which on the thermal conditional contractions and strains decrease, and the risk of damage to the hollow fibers 4 is significantly reduced.
  • the interior in the filter housing 2, in which the humid air flow is introduced according to the arrows 9, sealed via the compensation element 1 1 flow-tight from the environment.
  • the potting 5 can be axially moved only so far in the direction of the opposite Pottung 6 until the block-shaped connecting portion 1 1 a comes into contact with the shoulder 12 on the housing inner wall.
  • the three embodiments according to FIGS. 1 to 3 each have an identically constructed compensation element 1 1 on the first potting 5. However, differently, the holder and receiving the second, axially opposite Pottung 6 executed in the filter housing 2.
  • the potting 6 is potted directly into the filter housing 2 and thus firmly connected to the filter housing 2.
  • the potting 6 may have on its radially outer side a radially projecting, annular circumferential projection 13 which projects into a corresponding groove on the housing inner wall.
  • a frame part 14 which is designed, for example, as a plastic component and is preferably firmly connected to the potting 6.
  • the annular peripheral frame member 14 has an angular cross-section and engages around with a leg, the axial end face of the filter housing 2.
  • the frame member 14 is also fixedly connected to the filter housing 2, for example by welding.
  • the filter unit 3 is designed as a plug-in unit and is axially in the filter housing. 2 introduced. On the filter housing 2 is another, radially inwardly projecting paragraph 15, which forms a stop for the frame part of the potting 6.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Module filtrant comportant un boîtier et une unité filtrante avec des fibres creuses disposées entre deux supports (5,6). Entre un des supports (5) et le boîtier de filtre (2) est disposé un élément de compensation (11) qui comprend un segment de compensation longitudinale pour la compensation longitudinale entre le boîtier de filtre et l'unité filtrante.
PCT/EP2015/058635 2014-05-20 2015-04-22 Module filtrant à fibres creuses WO2015176900A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014007284.3 2014-05-20
DE102014007284.3A DE102014007284A1 (de) 2014-05-20 2014-05-20 Filtermodul mit Hohlfasern

Publications (1)

Publication Number Publication Date
WO2015176900A1 true WO2015176900A1 (fr) 2015-11-26

Family

ID=53039872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/058635 WO2015176900A1 (fr) 2014-05-20 2015-04-22 Module filtrant à fibres creuses

Country Status (2)

Country Link
DE (1) DE102014007284A1 (fr)
WO (1) WO2015176900A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020121711A1 (de) 2020-08-19 2022-02-24 Mann+Hummel Gmbh Filterelement und Filtersystem

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398787A (en) * 1966-10-11 1968-08-27 Struthers Wells Corp Expansion and contraction means for a heat exchanger
EP0360133A2 (fr) * 1988-09-19 1990-03-28 Akzo Nobel N.V. Echangeur de masse et/ou de chaleur
DE69103711T2 (de) * 1990-08-07 1995-02-02 Total Raffinage Distribution Anlage mit auf einem Kalander montiertem Rohrbündel, beide mit verschiedenen Ausdehnungskoeffizienten.
WO2001060502A1 (fr) * 2000-02-17 2001-08-23 Gambro Dialysatoren Gmbh & Co. Kg Filtre a membranes en fibres creuses
EP1275432A1 (fr) * 2001-07-10 2003-01-15 Praxair Technology, Inc. Sécheur à membranes à fibres creuses et filtres intégrés
EP1535656A1 (fr) * 2003-11-27 2005-06-01 Nissan Motor Co., Ltd. Humidificateur
WO2013100677A1 (fr) 2011-12-29 2013-07-04 Kolon Industries, Inc. Humidificateur à membrane

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716646C2 (de) * 1997-04-21 2001-01-18 Bio Lab Vertriebsgmbh Sterilisierbarer Filter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398787A (en) * 1966-10-11 1968-08-27 Struthers Wells Corp Expansion and contraction means for a heat exchanger
EP0360133A2 (fr) * 1988-09-19 1990-03-28 Akzo Nobel N.V. Echangeur de masse et/ou de chaleur
DE69103711T2 (de) * 1990-08-07 1995-02-02 Total Raffinage Distribution Anlage mit auf einem Kalander montiertem Rohrbündel, beide mit verschiedenen Ausdehnungskoeffizienten.
WO2001060502A1 (fr) * 2000-02-17 2001-08-23 Gambro Dialysatoren Gmbh & Co. Kg Filtre a membranes en fibres creuses
EP1275432A1 (fr) * 2001-07-10 2003-01-15 Praxair Technology, Inc. Sécheur à membranes à fibres creuses et filtres intégrés
EP1535656A1 (fr) * 2003-11-27 2005-06-01 Nissan Motor Co., Ltd. Humidificateur
WO2013100677A1 (fr) 2011-12-29 2013-07-04 Kolon Industries, Inc. Humidificateur à membrane

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DE102014007284A1 (de) 2015-11-26

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