EP0504550B1 - Mixing chamber - Google Patents
Mixing chamber Download PDFInfo
- 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
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Classifications
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- 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
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- 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
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- 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.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Accessories For Mixers (AREA)
Description
Die Erfindung betrifft eine Mischkammer für strömungstechnische Anlagen mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a mixing chamber for fluidic systems with the features of the preamble of
Derartige Mischkammern haben als Teil z. B. einer lufttechnischen Anlage die Aufgabe, mindestens zwei Teilströme, die Außenluft und die Umluft, die in der Regel unterschiedliche Temperaturen aufweisen, auf einer möglichst kurzen Strecke miteinander zu vermischen. Bei einer bekannten Mischkammer der eingangs genannten Art (DE-C-3 217 803) weisen die Hohlkörper einen länglichen Querschnitt auf. Auf der Anströmseite sind die Hohlkörper 90 Grad zu ihrer Symmetrieachse geschlossen, während der Austrittsquerschnitt ausschließlich auf der Seite vorgesehen ist, die dem Auslaß für den Hauptstrom zugewandt ist. Die aus der DE-C-3 217 803 bekannte Mischkammer hat sich im Betrieb bewährt, jedoch läßt sich der Mischgrad noch weiter verbessern. Die einen Teilstrom führenden Hohlkörper sind besonders geformte Bauteile, für deren Formung geeignete Werkzeuge verwendet werden müssen.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. 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.
In der EP-A-0 260 736 und der FR-A-1 261 312 sind Verfahren und Vorrichtungen zum Mischen von zwei oder mehr Luft- oder Gasströmen in einer strömungstechnischen oder einer raumlufttechnischen Anlage beschrieben. Gezeigt sind Mischkammern mit zwei senkrecht zueinander angeordneten Einlässen und mit einem in Verlängerung des einen Einlasses liegenden gemeinsamen Auslaß. An der Einmündung der Einlässe sind mehrere parallele Kammern mit Abstand zueinander angeordnet, die jeweils zu einem der Einlässe hin offen und zu dem anderen Einlaß hin durch Trennwände abgetrennt sind. Jeder der zugeführten Teilströme wird daher ausschließlich durch eine Gruppe von Kammern geführt. Dabei dienen die in einer Gruppe von Kammern vorhandenen Wände als Umlenkflächen. Die aufgeteilten und zunächst getrennt geführten Teilströme treffen erst stromabwärts von den Kammern aufeinander, wo die Vermischung der Teilströme beginnt.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.
Aus der GB-A-23 350 ist eine Mischvorrichtung zur Erzeugung eines brennbaren Gasgemisches bekannt, bei der einer der zugeführten Teilströme durch Rohre in Einzelstrahlen aufgeteilt wird. Diese Rohre ragen nicht frei in den als Ringkammer ausgebildeten Einlaß hinein, sondern sind in eine mit Bohrungen versehene Platte eingesetzt. Diese Platte läßt nicht zu, daß ein Teil des zugeführten Teilstromes die Rohre umströmt, und verhindert so, daß eine Vormischung der Teilströme stattfinden kann.From GB-A-23 350 a mixing device for generating a combustible gas mixture is known, 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.
Der Erfindung liegt die Aufgabe zugrunde, die gattungsmäße Mischkammer einfacher und kostengünstiger zu gestalten und eine bessere Mischung der Teilströme zu erreichen.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.
Diese Aufgabe wird bei einer gatttungsgemäßen Mischkammer erfindungsgemäß durch die kennzeichnenden Merkmale der Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved in a generic mixing chamber according to the invention by the characterizing features of
Bei der erfindungsgemäßen Mischkammer kann von Hohlkörpern, vorzugsweise von Rundrohren, ausgegangen werden die als Halbzeug lieferbar sind. Die Mischkammer kann daher kostengünstiger gefertigt werden. Darüber hinaus ergibt sich ein strömungstechnischer Vorteil durch die bessere Vermischung der Teilströme, da viele kleine Teilströme beim Durchtritt durch die Rohre auf festgelegten Wegen bis zum Austritt zwangsweise besser geführt und somit besser vermischt werden, wobei die geführte Länge eines Teilstromes in Strömungsrichtung des Hauptstromes gezielt abnimmt oder alternativ zunimmt oder gleichwertig die Luftaustrittsflächen der Hohlkörper in Hauptströmungsrichtung größer werden bei gleich lang geführten Teilströmen, oder alternativ die Luftaustrittsflächen der Hohlkörper in Hauptströmungsrichtung kleiner werden.In the mixing chamber according to the invention, hollow bodies, preferably round tubes, can be used which are available as semi-finished products. The mixing chamber can therefore be manufactured more cost-effectively. In addition, 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.
Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen:
- Fig. 1
- in perspektivischer Darstellung eine Mischkammer mit einem Einbauteil,
- Fig. 1a
- eine Mischkammer mit einem alternativ um 180 Grad gedrehten Einbauteil,
- Fig. 2
- die Seitenansicht zu Fig. 1.,
- Fig. 2a
- die Seitenansicht zu Fig. 1a,
- Fig. 3
- die Seitenansicht einer anderen Mischkammer,
- Fig. 3a
- die Seitenansicht einer Mischkammer wie Fig. 3, jedoch mit einem um 180 Grad gedrehten Einbauteil,
- Fig. 4
- die Seitenansicht einer Mischkammer mit gleichlangen Hohlkörpern,
- Fig. 4a
- die Seitenansicht einer Mischkammer wie Fig. 4, jedoch mit einem um 180 Grad gedrehten Einbauteil,
- Fig. 5
- die Seitenansicht einer anderen Mischkammer mit gleichlangen Hohlkörpern,
- Fig. 5a
- die Seitenansicht einer Mischkammer wie Fig. 5, jedoch mit einem um 180 Grad gedrehten Einbauteil,
- Fig. 6
- die perspektivische Darstellung einer Mischkammer mit versetzten Reihen Hohlkörpern,
- Fig. 7
- die perspektivische Darstellung einer Mischkammer mit anderen Hohlkörpern,
- Fig. 8
- verschiedene Profile für die Hohlkörper,
- Fig. 9
- in perspektivischer Darstellung eine Mischkammer mit zwei Einbauteilen
- Fig. 10
- in perspektivischer Darstellung eine Mischkammer mit zwei Einbauteilen und einem dritten Einlaß
- Fig. 11
- eine weitere Form einer Hohlkörperreihe und
- Fig. 12
- Draufsicht von Fig. 11.
- Fig. 1
- a perspective view of a mixing chamber with an installation part,
- Fig. 1a
- a mixing chamber with an alternative part rotated by 180 degrees,
- Fig. 2
- the side view of Fig. 1.,
- Fig. 2a
- the side view of Fig. 1a,
- Fig. 3
- the side view of another mixing chamber,
- Fig. 3a
- 3 shows the side view of a mixing chamber as in FIG. 3, but with an installation part rotated by 180 degrees,
- Fig. 4
- the side view of a mixing chamber with hollow bodies of equal length,
- Fig. 4a
- 4 shows the side view of a mixing chamber as in FIG. 4, but with an installation part rotated by 180 degrees,
- Fig. 5
- the side view of another mixing chamber with hollow bodies of the same length,
- Fig. 5a
- 5 shows the side view of a mixing chamber as in FIG. 5, but with an installation part rotated by 180 degrees,
- Fig. 6
- the perspective view of a mixing chamber with staggered rows of hollow bodies,
- Fig. 7
- the perspective view of a mixing chamber with other hollow bodies,
- Fig. 8
- different profiles for the hollow bodies,
- Fig. 9
- in perspective a mixing chamber with two built-in parts
- Fig. 10
- in perspective a mixing chamber with two built-in parts and a third inlet
- Fig. 11
- another form of a row of hollow bodies and
- Fig. 12
- Top view of FIG. 11.
Die Mischkammern von strömungstechnischen Anlagen sind durch zwei Seitenwände 1, eine untere und obere Bodenplatte 2 und eine Stirnwand 3 begrenzt. Die Mischkammer ist meistens mit zwei Einlässen 4, 5 für zwei Teilluftströme und mit einem gemeinsamen Auslaß 6 versehen. An die Einlässe 4, 5 sind nicht dargestellte Strömungskanäle angeschlossen, in denen in an sich bekannter Weise mengenbeeinflussende Einbauteile, z. B. Jalousieklappen zur Regelung der zufließenden Luftvolumenströme angeordnet sind. Die durch die Pfeile angedeuteten Einströmrichtungen der Teilströme 7, 8 aus Umluft und Außenluft stehen in diesen Beispielen unter einem Winkel von etwa 90 Grad zueinander. Es sind auch andere Zuströmanordnungen möglich.The mixing chambers of fluidic systems are delimited by two
Die zugeführten Teilströme 7, 8 werden in der Mischkammer vereinigt und verlassen die Mischkammer durch den Auslaß 6 als vereinigter Hauptstrom 9. An den Auslaß 6 schließen sich die weiteren Bauteile einer Klimaanlage, z. B. Filter und Wärmetauscher an, die hier nicht dargestellt sind.The
Wenn auch in den dargestellten Beispielen nach Fig. 1 bis 7 der eine Teilstrom 7 von oben zugeführt wird, so kann er auch ebenso seitlich oder von unten in die Mischkammer eingeleitet werden. Der Einlaß 5 ist hier in dem oberen Teil der Stirnwand 3 der Mischkammer vorgesehen, er kann auch tiefer oder unten angeordnet sein.If, in the illustrated examples according to FIGS. 1 to 7, the
In den Mischkammern nach Fig. 1 bis 7 sind mehrere Reihen von Hohlkörpern 10 mit Abstand voneinander angeordnet, die parallel zur Strömungsrichtung des einen Teilstromes 8 bzw. des Hauptstromes 9 liegen. In benachbarten Reihen können die Hohlkörper 10 in einer Linie quer zur Anströmrichtung des einen Teilstromes 8 oder versetzt zueinander ausgerichtet sein. Die Hohlkörper 10 werden von dem einen Teilstrom 8 umströmt und sind von dem anderen Teilstrom 7 durch- und umströmt. Die Hohlkörper 10 ragen frei in den zugehörenden Einlaß 4 hinein, so daß der durch diesen Einlaß 4 zugeführte Teilstrom 7 zwischen den Hohlkörpern 10 und in Einzelstrahlen aufgeteilt aus den Hohlkörpern 10 in die Mischkammer eintritt und dort mit dem anderen Teilstrom 8 intensiv vermischt wird und als vereinigter Hauptstrom 9 die Mischkammer verläßt.In the mixing chambers according to FIGS. 1 to 7, several rows of
Die Hohlkörper 10 einer Reihe sind miteinander, z. B. durch Schrauben, verbunden, die jeweils im oberen Teil die Hohlkörperwände zweier benachbarter Hohlkörper 10 durchdringen. An den Enden der Reihen sind die jeweils ersten und letzten Hohlkörper 10 an einer Leiste befestigt. Die Hohlkörper 10 weisen vorzugsweise einen runden Querschnitt auf. Es können aber auch andere Profile, z. B. ovale Rohre oder wie in Fig. 7 und 8 dargestellt, Halbschalenprofile 10b verwendet werden. Diese Halbschalenprofile 10b sind so angeordnet, daß ihr geschlossenwandiger Teil der Anströmung des einen Teilstromes 8 zugewandt ist, während der offene Teil auf der Abströmseite liegt.The
Die Länge der durch die Hohlkörper 10 aus dem einen Teilstrom 7 erzeugten Einzelstrahlen soll sich in Strömungsrichtung des Hauptstromes 9 ändern. Dabei kann sich die Länge in Sprüngen oder entlang einer geraden oder gewölbten Kurve stetig oder unstetig ändern.The length of the individual jets generated by the
Gemäß den Fig. 1, 2, 3, 6 und 7 nimmt die in den Teilstrom 8 hineinragende Länge der Hohlkörper 10 in Strömungsrichtung des die Hohlkörper 10 anströmenden Teilstromes 8 bzw. des Hauptstromes 9 ab. In den Fig. 1a, 2a, 3a ist beispielsweise gezeigt, daß die Längenänderung der einzelnen Hohlkörper 10 auch umgekehrt zu den Fig. 1, 2, 3 erfolgen kann, so daß die Hohlkörper 10 in Strömungsrichtung des Hauptstromes 9 an Länge zunehmen. Dieses Prinzip gilt auch für alle nachfolgend beschriebenen Ausführungen.1, 2, 3, 6 and 7, the length of the
Die Hohlkörper 10 können aber auch aus konstruktiven Gründen gleich lang sein, dann sind zur Erzeugung ungleich langer Einzelstrahlen die Hohlkörper 10 auf der Abströmseite mit Luftaustrittsflächen 10a versehen. Diese Luftaustrittsflächen 10a werden vom Einlaß 5 in Strömungsrichtung des Hauptstromes 9 größer, wie in Fig. 4 und 5 beispielsweise dargestellt. Alternativ können die Luftaustrittsflächen 10a der Hohlkörper 10 vom Einlaß 5 in Strömungsrichtung des Hauptstromes 9 kleiner werden, wie z. B. in Fig. 4a und 5a dargestellt. Die geometrische Form der Luftaustrittsflächen 10a kann verschieden gestaltet werden.The
In Fig. 9 ist eine Mischkammer mit zwei Einbauteilen aus Hohlkörpern 10 dargestellt, die jeweils in einen Einlaß 4 und 5a hineinragen. Auf diese Weise werden zwei Teilströme 7 und 8a zugeführt, die jeweils aus einem die Hohlkörper 10 umströmenden Teil und aus einem die Hohlkörper 10 durchströmenden und in Einzelstrahlen aufgeteilten Teil bestehen. Beide Teilströme 7 und 8a strömen hier im Winkel von 90 Grad (kann auch von 90 Grad abweichen) zur Strömungsrichtung des Hauptstromes 9 durch die Einlässe 4 und 5a in die Mischkammer ein, werden in Strömungsrichtung des Hauptstromes 9 umgelenkt, feinsträhnig vermischt und verlassen die Mischkammer durch den Auslaß 6, an dem sich gewöhnlich andere Bauteile, wie Luftfilter, Vorerhitzer usw. anschließen. Die Stirnwand 3 ist in Fig. 9 geschlossen. Die Lage der Einlässe 4 und 5a einschließlich der sich anschließenden Hohlkörper 10 können zueinander in den Seitenwänden 1 und/oder den Bodenplatten 2 beliebig und auch gemeinsam nur in einer Seitenwand 1 oder nur in einer Bodenplatte 2 angeordnet werden.9 shows a mixing chamber with two built-in parts made of
In Fig. 10 ist eine Mischkammer ähnlich wie in Fig. 9 mit zwei Einbauteilen aus Hohlkörpern 10 und einem zusätzlichen Einlaß 5 dargestellt. Diese Mischkammer ist in der Lage, die drei Teilströme 7, 8 und 8a mit hohem Mischgrad zu vermischen. Diese Mischkammer ist eine Kombination aus den Ausführungen nach Fig. 1 bis 8 und Fig. 9. Die Einlässe 4 und 5a können beliebig angeordnet werden, wie bei Fig. 9 beschrieben. Der Einlaß 5 kann in der Stirnwand 3 in der Höhe und Größe variabel angebracht werden. Die Stirnwand 3 kann auch ganz entfallen, wenn der Einlaß 5 gleich groß wie die Stirnwand 3 ist.FIG. 10 shows a mixing chamber similar to that in FIG. 9 with two built-in parts made of
Die Einlässe 4 und 5a liegen in Fig. 10 versetzt gegenüber, sie können auch direkt gegenüber liegen. Die in Reihe angeordneten Hohlkörper 10 werden dann in größeren Abständen verlegt, so daß die Hohlkörper 10 verzahnt und platzsparend abwechselnd eine Reihe des Einlasses 4 und 5a in Reihe übereinander liegen.The
Die Hohlkörper 10 der Einbauteile gemäß Fig. 9 und 10 bestehen vorzugsweise aus Rundrohren, sie können jedoch auch ausgebildet werden, wie in Fig. 1 bis 8 und Fig. 1a bis 5a dargestellt und beschrieben.The
Alternativ können die einzelnen Hohlkörper 10 einer Hohlkörperreihe durch Trennwände 10c innerhalb einer gemeinsamen Außenwand 10d gebildet werden, wie z. B. in Fig. 11 und 12 dargestellt.Alternatively, the individual
Vorzugsweise werden bei allen Mischkammerausführungen die Hohlkörper 10 von den Teilströmen 7 und 8a durch- und umströmt, das heißt, daß die Zwischenräume zwischen den Hohlkörperreihen in den Einlässen 4 und 5a offen sind. Diese Zwischenräume können jedoch auch teilweise geschlossen sein.In all mixing chamber designs, the
Bei sehr ungleichmäßigen Anströmprofilen werden die Einlässe 4, 5 bzw. 5a mit Lochblechen versehen, um die Anströmprofile zu vergleichmäßigen und um somit einen besseren Mischgrad zu erreichen.In the case of very uneven inflow profiles, the
Wird ein extrem hoher Mischgrad gefordert, werden die Hohlkörper 10 im hinteren Bereich zur Strömungsrichtung des Hauptstromes 9 perforiert. Hierdurch wird erreicht, daß die Teilströme noch besser vermischt werden. Auch die Austrittsflächen 10a der Hohlkörper 10 erreichen mit Lochblechabdeckung in bestimmten Fällen bessere Vermischungen.If an extremely high degree of mixing is required, the
Um nach der Montage der Mischkammer eine Anpassung an nicht vorhersehbare Anströmungen in bestehenden raumlufttechnischen Anlagen vornehmen zu können, sind die Hohlkörper 10 in der Länge geteilt und teleskopartig ineinander verschiebbar. Auf diese Weise kann der Abstand der Luftaustrittsöffnungen 10a von der Bodenplatte 2 verstellt werden, um in Abhängigkeit von den Anströmverhältnissen die Länge der austretenden Einzelstrahlen zu variieren. Eine Anpassung an nicht vorhersehbare Anströmungen kann auch dadurch vorgenommen werden, daß die Luftaustrittsöffnungen 10a einzelner Hohlkörper 10 verschließbar sind.In order to be able to adapt to unpredictable flows in existing ventilation and air conditioning systems after assembly of the mixing chamber, the
Claims (15)
- Mixing chamber, for flow technology installations, which is provided with at least one first and one second outlet (4, 5) for a first and a second partial flow (7, 8) and an outlet (6) for a main flow (9) and in which hollow bodies (10) are arranged, which adjoin the first inlet (4) and pass through the second partial flow (8), characterised thereby, that the hollow bodies (10) are arranged at a spacing one from the other in several rows one behind and beside the other and project freely into the first inlet (4) in such a manner that the first partial flow (7) supplied through this inlet (4) enters between the hollow bodies (10) and divided up into individual jets out of the hollow bodies (10) into the mixing chamber and that the individual jets display different lengths.
- Mixing chamber according to claim 1, characterised thereby, that the length of the individual jets varies steadily in flow direction of the main flow (9).
- Mixing chamber according to claim 1, characterised thereby, that the length of the individual jets varies discontinuously in flow direction of the main flow (9).
- Mixing chamber according to one of the claims 1 to 3, characterised thereby, that the hollow bodies (10) have closed walls and display an axial air exit opening (10a).
- Mixing chamber according to one of the claims 1 to 3, characterised thereby, that the hollow bodies (10b) have closed walls over the length in the inflow direction of the second partial flow (8) and are open on the outflow side.
- Mixing chamber according to claim 4 or 5, characterised thereby, that that length of the hollow bodies (10, 10b), which reaches into the mixing chamber in one row varies in flow direction of the main flow (9).
- Mixing chamber according to one of the claims 1 to 3, characterised thereby, that the hollow bodies (10) are equally long and provided on the outflow side of the main flow (9) with exit openings (10a), which extend over different heights within a row lying in flow direction of the main flow (9).
- Mixing chamber according to one of the claims 1 to 7, characterised thereby, that the hollow bodies (10) are at least partially perforated on the outflow side of the main flow (9).
- Mixing chamber according to one of the claims 1 to 7, characterised thereby, that air exit openings (10a) of the hollow bodies (10) are covered by a perforated metal plate.
- Mixing chamber according to one of the claims 1 to 9, characterised thereby, that the hollow bodies (10) of one row lying in the direction of flow of the main flow (9) consist of a common outer wall (10d) and that the interior space enclosed by the outer wall (10d) is divided up by partitions (10c).
- Mixing chamber according to claim 4 and 6, characterised thereby, that the hollow bodies (10) are divided in the length and displaceable one into the other in the manner of a telescope.
- Mixing chamber according to claim 4 and 6, characterised thereby, that the air exit openings (10a) of individual hollow bodies (10) are closable.
- Mixing chamber according to one of the claims 1 to 12, characterised thereby, that perforated metal plates are arranged in the inlets.
- Mixing chamber according to one of the claims 1 to 13, characterised thereby, that the hollow bodies (10, 10b) are arranged in different groups which each project into a respective individual inlet (4, 5a).
- Mixing chamber according to one of the claims 1 to 14, characterised thereby, that the mixing chamber is provided with three inlets (4, 5, 5a) and that the hollow bodies (10, 10b) project into two of the inlets (4, 5a).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4109101 | 1991-03-20 | ||
DE4109101A DE4109101A1 (en) | 1991-03-20 | 1991-03-20 | INSTALLATION FOR MIXING CHAMBERS OF FLOW TECHNICAL PLANTS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0504550A1 EP0504550A1 (en) | 1992-09-23 |
EP0504550B1 true EP0504550B1 (en) | 1996-05-15 |
Family
ID=6427769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92100975A Expired - Lifetime EP0504550B1 (en) | 1991-03-20 | 1992-03-10 | Mixing chamber |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0504550B1 (en) |
DE (2) | DE4109101A1 (en) |
ES (1) | ES2088032T3 (en) |
RU (1) | RU2041455C1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1043612C (en) * | 1994-03-25 | 1999-06-16 | 西门子公司 | Combined feed and mixing installation |
DE202008000056U1 (en) | 2008-05-15 | 2009-09-24 | Weiss Klimatechnik Gmbh | Air mixing device |
DE102012105366A1 (en) | 2012-06-20 | 2013-12-24 | Yit Germany Gmbh | Device for mixing fluid streams |
DE102014015036A1 (en) * | 2014-10-09 | 2016-04-28 | Steinmüller Babcock Environment Gmbh | Oxidation tank and method for treating effluent water of a seawater scrubber |
Family Cites Families (14)
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 (en) * | 1951-11-10 | 1954-01-07 | Applic Ind De La Mecanique Des | Method and apparatus for mixing fluids |
GB766006A (en) * | 1953-10-09 | 1957-01-16 | Urquhart S 1926 Ltd | Improvements relating to the mixing of gaseous streams |
FR1211889A (en) * | 1957-12-21 | 1960-03-18 | Metallgesellschaft Ag | Distributor of gaseous or liquid fluids |
FR1261312A (en) * | 1960-04-05 | 1961-05-19 | Saint Gobain | Method and static device for mixing fluids |
DE1692548A1 (en) * | 1966-12-22 | 1971-08-05 | Charier Vadrot Pierre | Process for the production of edible gelatine from collagens of animal origin |
DE2447369A1 (en) * | 1974-10-04 | 1976-04-22 | Basf Ag | METHOD AND DEVICE FOR MIXING LOW-VISCOSE LIQUIDS IN HIGH-VISCOSE MEDIA |
DE3207334C2 (en) * | 1982-03-02 | 1984-10-04 | Turbon-Tunzini Klimatechnik GmbH, 5060 Bergisch Gladbach | Mixing chamber for air conditioning systems |
DE3217803C2 (en) * | 1982-05-12 | 1986-09-11 | Turbon-Tunzini Klimatechnik GmbH, 5060 Bergisch Gladbach | Installation part for a mixing chamber of a ventilation and air conditioning system |
CA1262722A (en) * | 1984-06-20 | 1989-11-07 | Lawrence Marvin Litz | Process for dispersing one fluid in another |
DE3631311A1 (en) * | 1986-09-13 | 1988-03-24 | Blohm Voss Ag | Mixing apparatus |
NL8602338A (en) * | 1986-09-16 | 1988-04-18 | Hoogovens Groep Bv | GAS MIXER. |
DE8708201U1 (en) * | 1987-06-08 | 1987-11-12 | Hansa Ventilatoren u. Maschinenbau Neumann GmbH & Co KG, 2915 Saterland | Air conditioning device |
DE8711340U1 (en) * | 1987-08-18 | 1987-10-15 | Hansa Ventilatoren u. Maschinenbau Neumann GmbH & Co KG, 2915 Saterland | Air mixing device |
-
1991
- 1991-03-20 DE DE4109101A patent/DE4109101A1/en not_active Withdrawn
-
1992
- 1992-03-10 EP EP92100975A patent/EP0504550B1/en not_active Expired - Lifetime
- 1992-03-10 DE DE59206269T patent/DE59206269D1/en not_active Expired - Fee Related
- 1992-03-10 ES ES92100975T patent/ES2088032T3/en not_active Expired - Lifetime
- 1992-03-19 RU SU925011357A patent/RU2041455C1/en active
Also Published As
Publication number | Publication date |
---|---|
DE4109101A1 (en) | 1992-09-24 |
DE59206269D1 (en) | 1996-06-20 |
RU2041455C1 (en) | 1995-08-09 |
ES2088032T3 (en) | 1996-08-01 |
EP0504550A1 (en) | 1992-09-23 |
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