EP0504550B1 - Chambre de mélange - Google Patents

Chambre de mélange Download PDF

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Publication number
EP0504550B1
EP0504550B1 EP92100975A EP92100975A EP0504550B1 EP 0504550 B1 EP0504550 B1 EP 0504550B1 EP 92100975 A EP92100975 A EP 92100975A EP 92100975 A EP92100975 A EP 92100975A EP 0504550 B1 EP0504550 B1 EP 0504550B1
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
hollow bodies
chamber according
flow
main flow
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.)
Expired - Lifetime
Application number
EP92100975A
Other languages
German (de)
English (en)
Other versions
EP0504550A1 (fr
Inventor
Frank Staeckling
Joachim Griepentrog
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
H Krantz TKT GmbH
Original Assignee
Krantz TKT GmbH
H Krantz TKT 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 Krantz TKT GmbH, H Krantz TKT GmbH filed Critical Krantz TKT GmbH
Publication of EP0504550A1 publication Critical patent/EP0504550A1/fr
Application granted granted Critical
Publication of EP0504550B1 publication Critical patent/EP0504550B1/fr
Anticipated expiration legal-status Critical
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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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31323—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices used successively
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31322—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices used simultaneously

Definitions

  • the invention relates to a mixing chamber for fluidic systems with the features of the preamble of claim 1.
  • Such mixing chambers have as part z.
  • B an air conditioning system the task of mixing at least two partial flows, the outside air and the recirculating air, which generally have different temperatures, on the shortest possible route.
  • the hollow bodies In a known mixing chamber of the type mentioned at the beginning (DE-C-3 217 803), the hollow bodies have an elongated cross section. On the upstream side, the hollow bodies are closed 90 degrees to their axis of symmetry, while the outlet cross section is provided only on the side which faces the outlet for the main stream.
  • the mixing chamber known from DE-C-3 217 803 has proven itself in operation, but the degree of mixing can be improved still further.
  • the hollow bodies carrying a partial flow are specially shaped components, for which suitable tools have to be used.
  • EP-A-0 260 736 and FR-A-1 261 312 describe methods and devices for mixing two or more air or gas streams in a fluidic or a ventilation system. Shown are mixing chambers with two inlets arranged perpendicular to one another and with a common outlet located in the extension of the one inlet. At the mouth of the inlets, a plurality of parallel chambers are arranged at a distance from one another, each of which is open towards one of the inlets and separated from the other inlet by partition walls. Each of the partial streams supplied is therefore routed exclusively through a group of chambers. The walls in a group of chambers serve as deflection surfaces. The split and initially separated Part streams that are carried meet only downstream of the chambers, where the mixing of the partial streams begins.
  • a mixing device for generating a combustible gas mixture in which one of the partial streams supplied is divided by pipes into individual jets. These tubes do not protrude freely into the inlet designed as an annular chamber, but are inserted into a plate provided with holes. This plate does not allow part of the supplied partial flow to flow around the pipes, and thus prevents the partial flows from being premixed.
  • the object of the invention is to make the generic mixing chamber simpler and cheaper and to achieve a better mixing of the partial streams.
  • hollow bodies preferably round tubes
  • the mixing chamber can therefore be manufactured more cost-effectively.
  • there is a fluidic advantage due to the better mixing of the partial flows since many small partial flows in the Passage through the pipes on defined paths to the outlet are inevitably better guided and thus better mixed, the guided length of a partial stream decreasing in a targeted manner in the flow direction of the main stream or alternatively increasing or equivalent, the air outlet surfaces of the hollow bodies becoming larger in the main flow direction when the partial streams are of the same length, or alternatively, the air outlet areas of the hollow bodies become smaller in the main flow direction.
  • the mixing chambers of fluidic systems are delimited by two side walls 1, a lower and upper base plate 2 and an end wall 3.
  • the mixing chamber is usually provided with two inlets 4, 5 for two partial air flows and with a common outlet 6.
  • At the inlets 4, 5, flow channels, not shown, are connected, in which, in a manner known per se, built-in components, for. B.
  • Venetian blinds are arranged to regulate the incoming air volume flows.
  • the inflow directions of the partial flows 7, 8 from the circulating air and outside air indicated by the arrows are at an angle of approximately 90 degrees to one another. Other inflow arrangements are also possible.
  • the partial streams 7, 8 supplied are combined in the mixing chamber and leave the mixing chamber through the outlet 6 as a combined main stream 9.
  • the partial flow 7 is supplied from above, it can also be introduced into the mixing chamber laterally or from below.
  • the inlet 5 is provided here in the upper part of the end wall 3 of the mixing chamber, it can also be arranged lower or below.
  • hollow bodies 10 are arranged at a distance from one another, which are parallel to the direction of flow of the one partial flow 8 or the main flow 9. In adjacent rows, the hollow bodies 10 can be aligned in a line transversely to the flow direction of the one partial stream 8 or offset from one another.
  • the hollow bodies 10 flow around one partial flow 8 and flow through and around the other partial flow 7.
  • the hollow bodies 10 protrude freely into the associated inlet 4, so that the partial stream 7 supplied through this inlet 4 enters the mixing chamber between the hollow bodies 10 and divided into individual jets from the hollow bodies 10 and is intensively mixed there with the other partial stream 8 and as combined main stream 9 leaves the mixing chamber.
  • the hollow body 10 of a row are together, for. B. connected by screws, each penetrating the hollow body walls of two adjacent hollow bodies 10 in the upper part. At the ends of the rows, the first and last hollow bodies 10 are fastened to a bar.
  • the hollow bodies 10 preferably have a round cross section. But other profiles, e.g. B. oval tubes or as shown in Fig. 7 and 8, half-shell profiles 10b can be used. These half-shell profiles 10b are arranged in such a way that their closed-walled part faces the inflow of one partial flow 8, while the open part lies on the outflow side.
  • the length of the individual jets generated by the hollow body 10 from the one partial stream 7 is to change in the flow direction of the main stream 9.
  • the length can change in steps or along a straight or curved curve, either continuously or discontinuously.
  • the length of the hollow bodies 10 protruding into the partial stream 8 decreases in the flow direction of the partial stream 8 or the main stream 9 flowing into the hollow bodies 10.
  • 1a, 2a, 3a show, for example, that the change in length of the individual hollow bodies 10 can also take place in reverse to FIGS. 1, 2, 3, so that the hollow bodies 10 increase in length in the direction of flow of the main stream 9. This principle also applies to all versions described below.
  • the hollow bodies 10 can, however, also be of the same length for constructional reasons, in which case the hollow bodies 10 are provided with air outlet surfaces 10a on the outflow side in order to generate unevenly long individual jets.
  • These air outlet surfaces 10a become larger from the inlet 5 in the flow direction of the main stream 9, as shown in FIGS. 4 and 5 for example.
  • the air outlet surfaces 10a of the hollow body 10 from the inlet 5 in the flow direction of the main stream 9 can become smaller, such as. B. in Fig. 4a and 5a.
  • the geometric shape of the air outlet surfaces 10a can be designed in different ways.
  • FIG. 9 shows a mixing chamber with two built-in parts made of hollow bodies 10, each of which protrudes into an inlet 4 and 5a.
  • two partial flows 7 and 8a are supplied, each consisting of a part flowing around the hollow body 10 and a part flowing through the hollow body 10 and divided into individual jets.
  • Both partial flows 7 and 8a flow here at an angle of 90 degrees (can also deviate from 90 degrees) to the flow direction of the main flow 9 through the inlets 4 and 5a into the mixing chamber, are deflected in the flow direction of the main flow 9, mixed with fine strands and left the mixing chamber through the outlet 6, to which other components such as air filters, preheaters, etc. are usually connected.
  • the end wall 3 is closed in FIG. 9.
  • the position of the inlets 4 and 5a, including the adjoining hollow bodies 10, can be arranged with respect to one another in the side walls 1 and / or the base plates 2 as desired and also together only in one side wall 1 or only in one base plate 2.
  • FIG. 10 shows a mixing chamber similar to that in FIG. 9 with two built-in parts made of hollow bodies 10 and an additional inlet 5.
  • This mixing chamber is able to mix the three partial streams 7, 8 and 8a with a high degree of mixing.
  • This mixing chamber is a combination of the designs according to FIGS. 1 to 8 and FIG. 9.
  • the inlets 4 and 5a can be arranged as desired, as described in FIG. 9.
  • the inlet 5 can be mounted in the end wall 3 in height and size.
  • the end wall 3 can also be omitted entirely if the inlet 5 is the same size as the end wall 3.
  • the inlets 4 and 5a are offset in FIG. 10, they can also be directly opposite.
  • the hollow bodies 10 arranged in a row are then laid at greater intervals, so that the hollow bodies 10 are toothed and alternately a row of the inlet 4 and 5a lie one above the other in a space-saving manner.
  • the hollow bodies 10 of the built-in parts according to FIGS. 9 and 10 preferably consist of round tubes, but they can also be designed as shown and described in FIGS. 1 to 8 and FIGS. 1a to 5a.
  • the individual hollow bodies 10 of a row of hollow bodies can be formed by partitions 10c within a common outer wall 10d, such as, for example, B. in Figs. 11 and 12.
  • the partial flows 7 and 8a preferably flow through and around the hollow bodies 10, that is to say that the spaces between the rows of hollow bodies are open in inlets 4 and 5a. However, these spaces can also be partially closed.
  • the inlets 4, 5 and 5a are provided with perforated plates in order to even out the inflow profiles and thus to achieve a better degree of mixing.
  • the hollow bodies 10 are perforated in the rear area to the direction of flow of the main stream 9. This ensures that the partial flows are mixed even better.
  • the exit surfaces 10a of the hollow body 10 also achieve better mixing with perforated sheet cover in certain cases.
  • the hollow bodies 10 are divided in length and telescopically displaceable. In this way, the distance between the air outlet openings 10a and the base plate 2 can be adjusted in order to vary the length of the individual jets emerging as a function of the inflow conditions.
  • An adaptation to unforeseeable inflows can also be made in that the air outlet openings 10a of individual hollow bodies 10 can be closed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)

Claims (15)

  1. Chambre de mélange pour installations techniques à écoulements, pourvue d'au moins une première et une deuxième admissions (4, 5) pour un premier et un deuxième courants partiels (7, 8) et d'une évacuation (6) pour le courant principal, et dans laquelle sont disposés des corps creux (10) qui se raccordent à la première admission (4) et traversent le deuxième courant partiel (8), caractérisée en ce que les corps creux (10) sont disposés à distance les uns des autres, en plusieurs rangées les uns derrière les autres et les uns à côté des autres, et pénètrent librement dans la première admission (4), de manière que le premier courant partiel (7) amené par cette admission (4) soit subdivisé entre les corps creux (10) et en constituant des jets individuels, sortent des corps creux (10) pour entrer dans la chambre de mélange, et en ce que les jets individuels ont des longueurs différentes.
  2. Chambre de mélange selon la revendication 1, caractérisée en ce que la longueur des jets individuels dans la direction de l'écoulement du courant principal (9) varie de façon constante.
  3. Chambre de mélange selon la revendication 1, caractérisée en ce que la longueur des jets individuels dans la direction de l'écoulement du courant principal (9) varie de façon non constante.
  4. Chambre de mélange selon l'une des revendications 1 à 3, caractérisée en ce que les corps creux (10) sont à paroi fermée et présentent une ouverture de sortie d'air axiale (10a).
  5. Chambre de mélange selon l'une des revendications 1 à 3, caractérisée en ce que les corps creux (10b) sont à paroi fermée sur la longueur, dans la direction de l'arrivée de l'écoulement du deuxième courant partiel (8), et sont ouverts du côté d'évacuation de l'écoulement.
  6. Chambre de mélange selon la revendication 4 ou 5, caractérisée en ce que la longueur, pénétrant dans la chambre de mélange, des corps creux (10, 10b) d'une rangée varie dans la direction de l'écoulement du courant principal (9).
  7. Chambre de mélange selon l'une des revendications 1 à 3, caractérisée en ce que les corps creux (10) sont de même longueur et sont pourvus, du côté de l'évacuation de l'écoulement principal (9), d'ouvertures de sortie (10a) s'étendant à différents niveaux à l'intérieur d'une rangée située dans la direction de l'écoulement du courant principal (9).
  8. Chambre de mélange selon l'une des revendications 1 à 7, caractérisée en ce que les corps creux (10) sont perforés au moins partiellement du côté de l'évacuation de l'écoulement principal (9).
  9. Chambre de mélange selon l'une des revendications 1 à 7, caractérisée en ce que des ouvertures (10a) des corps creux (10) sont recouvertes par une tôle perforée.
  10. Chambre de mélange selon l'une des revendications 1 à 9, caractérisée en ce que les corps creux d'une rangée située dans la direction de l'écoulement principal (9) sont constitués d'une paroi extérieure commune (10d), et en ce que l'espace intérieur enclos par la paroi extérieure (10d) est subdivisé par les parois séparatives (10c).
  11. Chambre de mélange selon les revendications 4 et 6, caractérisée en ce que les corps creux (10) sont divisés en longueur et déplaçables les uns dans les autres télescopiquement.
  12. Chambre de mélange selon les revendications 4 et 6, caractérisée en ce que les ouvertures de sortie d'air (10a) de corps creux individuels (10) sont obturables.
  13. Chambre de mélange selon l'une des revendications 1 à 12, caractérisée en ce que des tôles perforées sont disposées dans des admissions (4, 5, 5a).
  14. Chambre de mélange selon l'une des revendications 1 à 13, caractérisée en ce que les corps creux (10, 10b) sont disposés en plusieurs groupes pénétrant chacun dans une admission (4, 5a) propre.
  15. Chambre de mélange selon l'une des revendications 1 à 14, caractérisée en ce que la chambre de mélange est pourvue de trois admissions (4, 5a) et en ce que les corps creux (10, 10b) pénètrent dans deux des admissions (4, 5a).
EP92100975A 1991-03-20 1992-03-10 Chambre de mélange Expired - Lifetime EP0504550B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109101A DE4109101A1 (de) 1991-03-20 1991-03-20 Einbau fuer mischkammern stroemungstechnischer anlagen
DE4109101 1991-03-20

Publications (2)

Publication Number Publication Date
EP0504550A1 EP0504550A1 (fr) 1992-09-23
EP0504550B1 true EP0504550B1 (fr) 1996-05-15

Family

ID=6427769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92100975A Expired - Lifetime EP0504550B1 (fr) 1991-03-20 1992-03-10 Chambre de mélange

Country Status (4)

Country Link
EP (1) EP0504550B1 (fr)
DE (2) DE4109101A1 (fr)
ES (1) ES2088032T3 (fr)
RU (1) RU2041455C1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2120189T3 (es) * 1994-03-25 1998-10-16 Siemens Ag Dispositivo combinado de alimentacion y mezcla.
DE202008000056U1 (de) 2008-05-15 2009-09-24 Weiss Klimatechnik Gmbh Luftmischeinrichtung
DE102012105366A1 (de) 2012-06-20 2013-12-24 Yit Germany Gmbh Vorrichtung zum Vermischen von Fluidströmen
DE102014015036A1 (de) * 2014-10-09 2016-04-28 Steinmüller Babcock Environment Gmbh Oxidationsbecken und Verfahren zum Behandeln von Ablaufwasser eines Meerwasser-Abgaswäschers

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191323350A (en) * 1913-10-15 1914-10-15 Alexander Constantine Ionides An Improved Method of and Means for Mixing the Constituents of a Combustible Gaseous Mixture.
FR1050423A (fr) * 1951-11-10 1954-01-07 Applic Ind De La Mecanique Des Méthode et appareil pour le mélange de fluides
GB766006A (en) * 1953-10-09 1957-01-16 Urquhart S 1926 Ltd Improvements relating to the mixing of gaseous streams
FR1211889A (fr) * 1957-12-21 1960-03-18 Metallgesellschaft Ag Distributeur de fluides gazeux ou liquides
FR1261312A (fr) * 1960-04-05 1961-05-19 Saint Gobain Procédé et dispositif statique de mélange de fluides
DE1692548A1 (de) * 1966-12-22 1971-08-05 Charier Vadrot Pierre Verfahren zur Herstellung von Speisegelatine aus Kollagenen animalischen Ursprungs
DE2447369A1 (de) * 1974-10-04 1976-04-22 Basf Ag Verfahren und vorrichtung zum einmischen von niedrigviskosen fluessigkeiten in hochviskose medien
DE3207334C2 (de) * 1982-03-02 1984-10-04 Turbon-Tunzini Klimatechnik GmbH, 5060 Bergisch Gladbach Mischkammer für raumlufttechnische Anlagen
DE3217803C2 (de) * 1982-05-12 1986-09-11 Turbon-Tunzini Klimatechnik GmbH, 5060 Bergisch Gladbach Einbauteil für eine Mischkammer einer raumlufttechnischen Anlage
CA1262722A (fr) * 1984-06-20 1989-11-07 Lawrence Marvin Litz Methode de dispersion d'un fluide dans un autre
DE3631311A1 (de) * 1986-09-13 1988-03-24 Blohm Voss Ag Mischvorrichtung
NL8602338A (nl) * 1986-09-16 1988-04-18 Hoogovens Groep Bv Gasmenger.
DE8708201U1 (de) * 1987-06-08 1987-11-12 Hansa Ventilatoren u. Maschinenbau Neumann GmbH & Co KG, 2915 Saterland Raumlufttechnisches Gerät
DE8711340U1 (de) * 1987-08-18 1987-10-15 Hansa Ventilatoren u. Maschinenbau Neumann GmbH & Co KG, 2915 Saterland Luftmischeinrichtung

Also Published As

Publication number Publication date
RU2041455C1 (ru) 1995-08-09
ES2088032T3 (es) 1996-08-01
EP0504550A1 (fr) 1992-09-23
DE59206269D1 (de) 1996-06-20
DE4109101A1 (de) 1992-09-24

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