EP1674150A2 - Micromélangeur statique - Google Patents
Micromélangeur statique Download PDFInfo
- Publication number
- EP1674150A2 EP1674150A2 EP05027041A EP05027041A EP1674150A2 EP 1674150 A2 EP1674150 A2 EP 1674150A2 EP 05027041 A EP05027041 A EP 05027041A EP 05027041 A EP05027041 A EP 05027041A EP 1674150 A2 EP1674150 A2 EP 1674150A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing chamber
- junctions
- fluid
- static micromixer
- symmetry
- 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.)
- Granted
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 80
- 238000005496 tempering Methods 0.000 claims description 5
- 239000010408 film Substances 0.000 description 24
- 239000011888 foil Substances 0.000 description 15
- 239000013039 cover film Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
- B01F25/31425—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the axial and circumferential direction covering the whole surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/30—Micromixers
- B01F33/301—Micromixers using specific means for arranging the streams to be mixed, e.g. channel geometries or dispositions
- B01F33/3012—Interdigital streams, e.g. lamellae
Definitions
- the invention relates to a static micromixer with a mixing chamber, feeds for at least two fluid fractions to be mixed or dispersed, each having at least one confluence with the mixing chamber and at least one orifice out of the mixing chamber according to claim 1.
- a micromixer In a micromixer, the fluids to be mixed, each separately separated, are divided into a large number (often several thousand) of fluid flow filaments, all of which open into a mixing chamber via the inlets via the junctions.
- a static micromixer is characterized by the fact that there are no moving parts in it except for the fluid fractions to be mixed.
- such a micromixer with at least one mixing chamber and an upstream guide component for the separate supply of fluids to be mixed to a mixing chamber
- the guide member with dimensions in the millimeter range of several superimposed films having a respective thickness of 100 microns thickness is composed, in which the channels are incorporated as microstructures.
- the channels of a film comprise feeds for only one of the two fluid fractions.
- a similar micromixer in which, with an otherwise identical structure and functional principle, the supply channels of two fluids to be mixed or discharged in an arcuate manner run parallel to one another into the mixing chamber is described in DE 195 40 292 C1.
- the guide channels have a constant cross-section with widths less than 250 microns, the films in which the channel structures are incorporated, a thickness of about 100 microns.
- DE 101 23 093 A1 also discloses a static micromixer for mixing at least two fluids, comprising a plurality of structured films stacked on top of each other.
- the mixing chamber is formed by a circular breakthrough in a film, wherein the junctions of the two fluids on the same film incorporated in an alternating order in a plane over the entire mixing chamber height over the cylindrical wall of the mixing chamber are arranged.
- a two-dimensional spiral flow arises in the mixing chamber, which opens into a bore arranged centrally around the axis of symmetry of the mixing chamber on an end face of the mixing chamber (formed by a film surface delimiting the mixing chamber).
- a similar mixing apparatus for mixing at least two fluids with spiral flow guidance is also described in WO 02/089966 A2 .
- the fluids are additionally mixed in separate mixers in the supply lines before entering the mixing chamber.
- a spiral flow guide of the aforementioned type is naturally associated with a flow constriction, which significantly limits the possible throughput or causes an increasing flow velocity.
- centrifugal forces of the basic flow direction towards the center of the mixing chamber counteract the fluid in the flow spiral. Both influences increase a certain back pressure in the mixing chamber and thus also the probability of turbulent flow components.
- US 5,573,334 discloses a static mixer for two fluid fractions, comprising a cylindrical mixing chamber with two end portions, one per each confluence of fluid and a common orifice are positioned in each one of the end regions. Also realized here in the orifice by a concentric bore in the bottom of the cylindrical mixing chamber - in principle associated with the aforementioned effects.
- the object of the invention is to propose a static micromixer of the generic type with an improved mixing efficiency already in the laminar fluid flow, said said obstructing the flow obstructing and limiting disadvantages should be reduced.
- the invention comprises a rotationally symmetrical mixing chamber having an axis of symmetry and two end regions, a number of feeds for at least two fluid fractions to be mixed or dispersed, each having at least one confluence with the mixing chamber and at least one orifice from the mixing chamber. All junctions are located exclusively in one of the two end regions, while the orifices are positioned in the other end region. Preferably, the junctions of the fluid fractions are over the circumference of the shell surface of the mixing chamber, i. not arranged on the end face in alternating order in one or more planes.
- An essential feature of the invention relates to the arrangement of the junctions of the fluid fractions in the mixing chamber, in alternating order.
- the alternating sequence of the junctions and thus of the fluid flow filaments flowing into the mixing chamber thus ensures a high specific mixing surface between the fluid fractions to be mixed or dispersed in the mixing chamber.
- An essential feature of the invention comprises a non-concentric arrangement of the orifice in the mixing chamber.
- the orifices are arranged in the outer region of the mixing chamber, preferably the lateral surface.
- turbulent flow components fundamentally improve the efficiency of a mixing or dispersion of the fluid flow filaments in the mixing chamber, however, they also cause larger residence time differences of the fluid mixtures in the mixing chamber to be avoided in certain, in particular reactive mixing processes. By avoiding or reducing turbulent flow, the abovementioned residence time differences also advantageously decrease, in particular in comparison with the devices according to the prior art.
- each of the fluid flow filaments is completely adjacent, ie on all sides, to fluid flow filaments of another fluid fraction, thus providing the greatest possible mixing surface area between the fluid fractions and as a result a further improvement of the mixing efficiency can be achieved.
- mixing or dispersing two fluid fractions is ideally created an arrangement of the individual junction cross-sections similar to a checkerboard arrangement.
- junctions for generating a preferred helical fluid guide in the mixing chamber are arranged tangentially, preferably with a small pitch angle to the lateral surface of the mixing chamber serving as a wall.
- the object is achieved in that the layers are formed by stacked films with grooves as fluid guides, wherein the feeds per fluid fraction via fluid channels, comprising superimposed openings in the films, are fluidly interconnected.
- the superimposed openings form in the film stack, the fluid channels from which branch off the fluid guides to the mixing chamber.
- the fluid connections to the fluid channels are preferably placed on the respective limiting outer cover film.
- a feed can also be realized via channels on one or more foils, the preferably limiting outer cover foils sealingly covering the fluid channels.
- the aforementioned low pitch angle of the junctions can be achieved, for example, by designing the foils completely or only in the area of the junctions, ie directly in the wall of the mixing chamber as a truncated cone lateral surfaces. This can be achieved, for example, via cold forming of the individual films or of the film stack prior to the connection of the films to one another with respect to the guide component, for example via diffusion bonding.
- the fluid channels with appropriate means for measurements such as e.g. a thermocouple or for a temperature control or a pressure measurement such. equipped with a heating element or a fluidic heat exchanger and dimensioned accordingly, which can be tailored to the fluid fractions in an advantageous manner immediately before entering the fluid guides individually.
- appropriate means for measurements such as e.g. a thermocouple or for a temperature control or a pressure measurement such. equipped with a heating element or a fluidic heat exchanger and dimensioned accordingly, which can be tailored to the fluid fractions in an advantageous manner immediately before entering the fluid guides individually.
- the first embodiment acc. 1 schematically shows a micromixer of the first embodiment for the mixing of two fluid fractions A and B with a cylindrical mixing chamber 12 in the mixing chamber housing 14. Also shown is the basic arrangement of the guide member 1 with the feeders 5 and junctions 6 at the top and an orifice Feeders and junctions are arranged over the circumferential surface circumference of the one mixing chamber end in a plane, with respect to the fluids A and B in alternating sequence.
- the guide member 1 is sealingly placed on a mixing chamber housing 14, -glued or -welded.
- the axis of symmetry is orthogonal to the planes formed by the films.
- the embodiments comprise a guide component 1, preferably consisting of a number of successively gas- and pressure-tight interconnected (eg via a diffusion welding process), alternately stacked films 2 and 3 (first film 2 and second film 3) between serving as a mixing chamber end (mixing chamber) Covering sheet 4 and a mixing chamber housing 14.
- a guide component 1 preferably consisting of a number of successively gas- and pressure-tight interconnected (eg via a diffusion welding process), alternately stacked films 2 and 3 (first film 2 and second film 3) between serving as a mixing chamber end (mixing chamber) Covering sheet 4 and a mixing chamber housing 14.
- Each plane is formed by one of the foils 2 or 3, ie the first embodiment comprises only one foil 2 or 3 (not explicitly shown in Fig.1 ).
- the feeds 5 and the junctions 6 are incorporated as channel structures (preferably, cutting, erosive or chemically corrosive).
- the cover films have connection openings 7 for the abovementioned fluid connections which are not shown in FIGS. 1 to 4 .
- the connection openings adjoin the aforementioned fluid channels in the guide component, which form in the films in the film stack by a number of apertures 8 arranged congruently one above the other.
- the fluids A and B are introduced into the fluid channels (shown in FIG. 2 by arrows on the cover film 4) and from there into the feeders 5 in order to leave the guide component via junctions 6 into the mixing chamber.
- the surface of the guide member 1 in the region of the junctions 6 forms the flat wall 9 of the mixing chamber.
- FIG. 3 shows detailed views of the films 2 and 3 with the apertures 8, as well as the channel structures, comprising the feeds 5 and the junctions 6 in the region of the wall 9.
- only one feed 5 opens out of each opening 8 per film wherein the apertures form the fluid channels for the fluid fractions A and B in an alternating sequence.
- Each foil thus forms a plane with junctions of the fluid fractions A and B in alternating sequence.
- the channel structures of film 2 and 3 are not congruent, but have mutually arranged junctions 6 and 5 feeds. If the junctions of the first foils 2 and the second foils 3 are each offset by one junction, the checkerboard pattern of the junctions 6 of the fluids A and B shown in FIG . 3 is obtained, the junctions being oriented at an angle of 90 ° to the wall 9 ( FIG . see Fig.4).
- junctions 6 of the fluid fractions A and B are oriented parallel to one another in the mixing chamber in favor of a laminar mixing of the abovementioned fluid flow filaments (see FIG. In principle, angles greater than 0 °, in particular between 45 and 90 °, are suitable.
- an unequal angle and thus a crossing of the fluid flow filaments are to be striven for in principle, if a targeted adjustment of a turbulent flow state is desired directly at the junctions.
- the angle difference is preferably above 10 °. If it is above 90 °, there will be a counterflow of the fluid flow filaments and thus in turn to an increased back pressure.
- the foils 2 and 3 and thus the junctions (see Figures 2 and 3) and the orifices 11 (see Fig.2) are located in each one of these end portions, wherein the aforementioned guide member 1, the one end of the rotationally symmetric mixing chamber 12 completely encloses.
- the feeds 5 shown on the second foil 3 have an offset to the openings 8, whereby the junctions 6 on the mixing chamber wall 9 with alternating sequence of the foils 2 and 3 and at a order each one confluence per plane (slide) staggered arrangement of the junctions according to a checkerboard pattern (see Fig.3 and 4).
- the junctions are aligned with the axis of symmetry and form a right angle with each of these.
- the junctions can be arranged askew to the axis of symmetry, whereby in a rotationally symmetrical mixing chamber, a flow direction, preferably a helical, in particular in the outer region of the mixing chamber, pretending. It makes sense to design the mixing chamber as an annular gap volume and / or to arrange the orifices in the flow direction.
- the orifices are arranged outside the axis of symmetry.
- FIG. 5 shows a sectional view of a further embodiment with annular gap volume as a rotationally symmetrical mixing chamber 12. It differs from the second embodiment illustrated in FIGS. 2 to 4 by the core 15 arranged around the axis of symmetry 13. If the junctions are skewed in the above-mentioned sense to the symmetry axis 13 and also aligned identically with this, the annular gap volume builds around the Core 15 in the direction of the outlet 11 a flow spiral on. 5 also shows, by way of example, the course of the fluid channels 16 formed by the openings of the foils 2 and 3.
- FIG. 6 shows the embodiment according to FIG. 5, but with a tempering device in the mixing chamber housing-side mixing chamber wall.
- the temperature device comprises a microfluidic heat exchanger having a microchannel structure and a flowing tempering medium, i. with two ports 1 and two distribution channels 18, between which a plurality of parallel individual channels 19 penetrates the mixing chamber housing 14.
- other components of the static micromixer can also be tempered, i. heat or cool, such as in the region of the core, selectively the feeds and Einmündugen for a fluid fraction or the orifice.
- tempered i. heat or cool, such as in the region of the core, selectively the feeds and Einmündugen for a fluid fraction or the orifice.
- a temperature of the junctions can be undesirable effects of larger temperature and pressure gradients, such as cavitation or changes in the state of matter, reduce upon entry of fluid flow filaments of a fluid fraction from the junctions into the mixing chamber.
- Fig. 7 shows a core 15 (see Fig. 5 and 6), which is divided as a double tube in two sub-volumes.
- the annealing medium is guided axially in one direction to one end of the core in order to return it axially between the inner and outer tubes, with heat being released into the surrounding region of the mixing chamber 12.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004062076A DE102004062076A1 (de) | 2004-12-23 | 2004-12-23 | Statischer Mikrovermischer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1674150A2 true EP1674150A2 (fr) | 2006-06-28 |
EP1674150A3 EP1674150A3 (fr) | 2006-07-05 |
EP1674150B1 EP1674150B1 (fr) | 2007-06-13 |
Family
ID=35986618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05027041A Active EP1674150B1 (fr) | 2004-12-23 | 2005-12-10 | Micromélangeur statique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1674150B1 (fr) |
AT (1) | ATE364438T1 (fr) |
DE (2) | DE102004062076A1 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009124531A2 (fr) * | 2008-04-11 | 2009-10-15 | Fa. Jarus Gmbh | Tête de mélange pour composants liquides et pâteux |
FR2936959A3 (fr) * | 2008-10-14 | 2010-04-16 | Renault Sas | Dispositif de melange de gaz. |
WO2011091962A1 (fr) | 2010-01-28 | 2011-08-04 | Cargill, Incorporated | Microtraitement servant à la préparation d'un polycondensat |
EP2433970A1 (fr) | 2010-09-28 | 2012-03-28 | Cargill, Incorporated | Procédé en microfluidique pour préparer un polycondensat |
WO2021195534A1 (fr) | 2020-03-26 | 2021-09-30 | Cargill, Incorporated | Microtraitement pour la préparation d'une protéine modifiée |
WO2023159172A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
WO2023159175A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
WO2023159173A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
WO2023159171A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008009199A1 (de) | 2008-02-15 | 2009-08-27 | Forschungszentrum Karlsruhe Gmbh | Reaktionsmischersystem zur Vermischung und chemischer Reaktion von mindestens zwei Fluiden |
JP2010000428A (ja) * | 2008-06-19 | 2010-01-07 | Hitachi Plant Technologies Ltd | マイクロリアクタ |
DE102010051225A1 (de) | 2010-11-12 | 2012-05-16 | Dental Care Innovation Gmbh | Ausspülkammer für Reinigungstabletten |
USD825741S1 (en) | 2016-12-15 | 2018-08-14 | Water Pik, Inc. | Oral irrigator handle |
US11179231B2 (en) | 2017-03-16 | 2021-11-23 | Water Pik, Inc. | Oral irrigator handle for use with oral agent |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002089966A2 (fr) * | 2001-05-07 | 2002-11-14 | Uop Llc | Appareil destine a melanger et a faire reagir au moins deux fluides |
US20030039169A1 (en) * | 1999-12-18 | 2003-02-27 | Wolfgang Ehrfeld | Micromixer |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5523063A (en) * | 1992-12-02 | 1996-06-04 | Applied Materials, Inc. | Apparatus for the turbulent mixing of gases |
DE4416343C2 (de) * | 1994-05-09 | 1996-10-17 | Karlsruhe Forschzent | Statischer Mikro-Vermischer |
DE19540292C1 (de) * | 1995-10-28 | 1997-01-30 | Karlsruhe Forschzent | Statischer Mikrovermischer |
DE10041823C2 (de) * | 2000-08-25 | 2002-12-19 | Inst Mikrotechnik Mainz Gmbh | Verfahren und statischer Mikrovermischer zum Mischen mindestens zweier Fluide |
DE10123093A1 (de) * | 2001-05-07 | 2002-11-21 | Inst Mikrotechnik Mainz Gmbh | Verfahren und statischer Mikrovermischer zum Mischen mindestens zweier Fluide |
DE10123092B4 (de) * | 2001-05-07 | 2005-02-10 | INSTITUT FüR MIKROTECHNIK MAINZ GMBH | Verfahren und statischer Mischer zum Mischen mindestens zweier Fluide |
JP4431857B2 (ja) * | 2003-05-30 | 2010-03-17 | 富士フイルム株式会社 | マイクロデバイス |
-
2004
- 2004-12-23 DE DE102004062076A patent/DE102004062076A1/de not_active Withdrawn
-
2005
- 2005-12-10 EP EP05027041A patent/EP1674150B1/fr active Active
- 2005-12-10 AT AT05027041T patent/ATE364438T1/de active
- 2005-12-10 DE DE502005000859T patent/DE502005000859D1/de active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030039169A1 (en) * | 1999-12-18 | 2003-02-27 | Wolfgang Ehrfeld | Micromixer |
WO2002089966A2 (fr) * | 2001-05-07 | 2002-11-14 | Uop Llc | Appareil destine a melanger et a faire reagir au moins deux fluides |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009124531A2 (fr) * | 2008-04-11 | 2009-10-15 | Fa. Jarus Gmbh | Tête de mélange pour composants liquides et pâteux |
WO2009124531A3 (fr) * | 2008-04-11 | 2010-01-28 | Fa. Jarus Gmbh | Tête de mélange pour composants liquides et pâteux |
FR2936959A3 (fr) * | 2008-10-14 | 2010-04-16 | Renault Sas | Dispositif de melange de gaz. |
WO2011091962A1 (fr) | 2010-01-28 | 2011-08-04 | Cargill, Incorporated | Microtraitement servant à la préparation d'un polycondensat |
EP2433970A1 (fr) | 2010-09-28 | 2012-03-28 | Cargill, Incorporated | Procédé en microfluidique pour préparer un polycondensat |
WO2021195534A1 (fr) | 2020-03-26 | 2021-09-30 | Cargill, Incorporated | Microtraitement pour la préparation d'une protéine modifiée |
WO2023159172A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
WO2023159175A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
WO2023159173A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
WO2023159171A1 (fr) | 2022-02-17 | 2023-08-24 | Cargill, Incorporated | Dextrines résistantes et procédés de fabrication de dextrines résistantes |
Also Published As
Publication number | Publication date |
---|---|
DE502005000859D1 (de) | 2007-07-26 |
DE102004062076A1 (de) | 2006-07-06 |
EP1674150B1 (fr) | 2007-06-13 |
EP1674150A3 (fr) | 2006-07-05 |
ATE364438T1 (de) | 2007-07-15 |
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