EP0121877B1 - Spray nozzle in the shape of a hollow cone - Google Patents

Spray nozzle in the shape of a hollow cone Download PDF

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Publication number
EP0121877B1
EP0121877B1 EP84103521A EP84103521A EP0121877B1 EP 0121877 B1 EP0121877 B1 EP 0121877B1 EP 84103521 A EP84103521 A EP 84103521A EP 84103521 A EP84103521 A EP 84103521A EP 0121877 B1 EP0121877 B1 EP 0121877B1
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EP
European Patent Office
Prior art keywords
nozzle
mixing chamber
inlet bore
inlet
liquid
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
Application number
EP84103521A
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German (de)
French (fr)
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EP0121877A2 (en
EP0121877A3 (en
Inventor
Günter Eipper
Hans Langenfelder
Hans-Jochen Beyse
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BASF SE
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BASF SE
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Publication date
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Priority to AT84103521T priority Critical patent/ATE38339T1/en
Publication of EP0121877A2 publication Critical patent/EP0121877A2/en
Publication of EP0121877A3 publication Critical patent/EP0121877A3/en
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Publication of EP0121877B1 publication Critical patent/EP0121877B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3478—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet the liquid flowing at least two different courses before reaching the swirl chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge

Definitions

  • the invention relates to a hollow cone atomizing nozzle according to the preamble of the claims, in which the spray cone of the atomized liquid is adjustable.
  • the swirl of the liquid to be atomized which is required for the formation of the spray cone, is generated by built-in parts in the nozzle housing or by eccentric introduction of the liquid into the nozzle housing.
  • the angular momentum of the liquid which is decisive for the swirl, in turn depends on its flow velocity.
  • the spray angle of the nozzle also changes due to the fixed geometry of the internals or the eccentric introduction and the subsequent chamber in the nozzle housing. If, on the other hand, the flow velocity is constant, the spray angle can only be changed by exchanging the swirl-generating internals.
  • an atomizing nozzle is known in which the liquid to be atomized is introduced into a mixing chamber of the nozzle housing in an axial partial flow and in an eccentrically guided partial flow.
  • the two partial streams which can be adjusted by valves, should unite in the mixing chamber to form a total stream emerging from the nozzle opening in a spray cone.
  • the axial partial flow largely strikes the nozzle opening directly without mixing with the eccentrically introduced partial flow.
  • little influence can be exerted on the swirl of the liquid to be atomized resulting in the nozzle opening and thus on the spray cone.
  • tests have shown that a nozzle designed in this way works irregularly and in an uncontrollable manner. Associated with this is a fluctuating large spectrum of the drops emerging from the spray cone. This is due to the fact that the axial partial flow disturbs the air base in the mixing chamber, which influences the swirl of the eccentrically introduced partial flow.
  • Hollow cone atomizing nozzles are e.g. B. used in the production of dyes for atomizing dye suspensions in atomization dryers.
  • a certain spray angle of the atomized suspension must be kept constant in a small area. If the angle is too small, the heat content of the dry air is not used optimally, so that in addition to a reduced efficiency of the system, incompletely dried product particles are the result.
  • a spray angle that is too large causes product caking on the dryer wall, which must be removed for safety and quality reasons. For this purpose, the drying process is interrupted again and again.
  • the drying process may have to be interrupted several times in order to replace by Nozzle parts to optimize the spray angle.
  • the principle of the construction of the present hollow cone atomizing nozzle is based on the measure of introducing the liquid to be atomized into the nozzle housing in two or more partial flows, of which at least one partial flow is given a swirl which builds up the spray angle of the nozzle and the further partial flow (s) can be fed without twist.
  • the partial streams are superimposed in a mixing chamber of the nozzle, so that there is a flow out of the nozzle opening escaping total flow of the liquid results in a swirl which determines the angle of the spray cone with an angular momentum resulting in accordance with the size of the partial flows.
  • the partial flows leading to the nozzle and thus the spray angle can be adjusted.
  • the nozzle housing 1 is provided with an inlet bore 3 opening eccentrically into a swirl chamber 2 and with an inlet bore 6 arranged in an insert 4 coaxial to the nozzle axis 5, which has one or more inlet bores 7 at an angle from Z. B. 450 opens into the swirl chamber to the nozzle axis.
  • the swirl chamber is followed by a rotationally symmetrical mixing chamber 8, in which the partial flows introduced via the inlet bores 3 and 6 mix, so that the angular momentum of the eccentrically introduced partial flow is distributed over the entire liquid flow to be atomized.
  • the outlet of the mixing chamber is led to the nozzle opening 9.
  • inlet bore 6 can be replaced by a bore 12 parallel to the nozzle axis 5 (FIG. 5) or else a bore opening radially into the mixing chamber 8 10 (FIG. 3).
  • the supply lines, not shown in the drawing, for the inlet bores 3 and 6 can be guided via fine control valves, so that the partial streams supplied to the bores and thus the spray angle of the entire liquid stream leaving the nozzle opening 9 can be adjusted without the nozzle having to be changed or internals having to be replaced . This also enables automatic control of the spray angle.
  • a further embodiment of the nozzle according to the invention provides that two inlet bores are guided eccentrically and in the flow direction of the partial streams of the liquid to be atomized to be introduced into the swirl chamber and the downstream mixing chamber opposite to one another.
  • swirl-generating internals can also be provided for the inlet bores.
  • the nozzle according to the invention it is now possible to readjust the spray angle with a variable total volume flow through the nozzle, with fluctuations in the viscosity of the liquid to be atomized or with fluctuations in the solids content of the liquid. Conversely, with a constant volume flow, the spray angle can be changed over a wide range.

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  • Nozzles (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1. A hollow-cone atomizer nozzle, comprising a nozzle housing (1) in which is formed a rotationally symmetrical mixing chamber (8), a first and a second inlet bore for the liquid to be atomized and a nozzle orifice (9) at the outlet of the mixing chamber, the inlet bores being assigned valves which can be operated for the setting of the liquid part-streams, the first inlet bore (6) being arranged coaxial with the nozzle axis and the second inlet bore (3) opening eccentrically into the mixing chamber, wherein the first inlet bore opens into the mixing chamber at an angle to the nozzle axis via one or more feed bores (7).

Description

Die Erfindung betrifft eine Hohlkegelzerstäubungsdüse gemäß Oberbegriff der Patentansprüche, bei der der Sprühkegel der zerstäubten Flüssigkeit einstellbar ist.The invention relates to a hollow cone atomizing nozzle according to the preamble of the claims, in which the spray cone of the atomized liquid is adjustable.

Bei den bekannten Düsenkonstruktionen wird der für die Ausbildung des Sprühkegels erforderliche Drall der zu zerstäubenden Flüssigkeit durch Einbauten im Düsenghäuse oder durch exzentrisches Einleiten der Flüssigkeit in das Düsengehäuse erzeugt. Der für den Drall maßgebende Drehimpuls der Flüssigkeit hängt wiederrum von deren Strömungsgeschwindigkeit ab.In the known nozzle designs, the swirl of the liquid to be atomized, which is required for the formation of the spray cone, is generated by built-in parts in the nozzle housing or by eccentric introduction of the liquid into the nozzle housing. The angular momentum of the liquid, which is decisive for the swirl, in turn depends on its flow velocity.

Ändert sich während des Betriebs die Strömungsgeschwindigkeit, so ändert sich Infolge der festen Geometrie der Einbauten bzw. der exzentrischen Einleitung und der nachfolgenden Kammer im Düsengehäuse auch der Sprühwinkel der Düse. Ist hingegen die Strömungsgeschwindigkeit konstant, so kann der Sprühwinkel nur durch Austausch der drallerzeugenden Einbauten verändert werden.If the flow velocity changes during operation, the spray angle of the nozzle also changes due to the fixed geometry of the internals or the eccentric introduction and the subsequent chamber in the nozzle housing. If, on the other hand, the flow velocity is constant, the spray angle can only be changed by exchanging the swirl-generating internals.

Aus der FR-A-2 397 889 ist eine Zerstäubungsdüse bekannt, bei der die zu zerstäubende Flüssigkeit in einem axialen Teilstrom und in einem exzentrisch geführten Teilstrom in eine Mischkammer des Düsengehäuses eingeleitet wird. Die beiden Teilstrome, die durch Ventile einstellbar sind, sollen sich in der Mischkammer zu einem aus der Düsenöffnung in einem Sprühkegel austretenden Gesamtstrom vereinigen. Der axiale Teilstrom trifft jedoch großenteils direkt auf die Düsenöffnung, ohne sich mit dem exzentrisch eingeleiteten Teilstrom zu vermischen. Auf den in der Düsenöffnung resultierenden Drall der zu zerstäubenden Flüssigkeit und damit auf den Sprühkegel kann demzufolge wenig Einfluß genommen werden. Ferner haben Versuche gezeigt, daß eine derartig gestaltete Düse unregelmäßig und unkontrollierbar arbeitet, im Fachjargon wird von einem Pulsieren oder Stoßen der Düse gesprochen. Damit verbunden ist ein schwankendes Großenspektrum der aus dem Sprühkegel entstehenden Tropfen. Dies ist darauf zurückzuführen, daß der axiale Teilstrom die Luftbase in der Mischkammer stört, die den Drall des exzentrisch eingeleiteten Teilstroms beeinflußt.From FR-A-2 397 889 an atomizing nozzle is known in which the liquid to be atomized is introduced into a mixing chamber of the nozzle housing in an axial partial flow and in an eccentrically guided partial flow. The two partial streams, which can be adjusted by valves, should unite in the mixing chamber to form a total stream emerging from the nozzle opening in a spray cone. However, the axial partial flow largely strikes the nozzle opening directly without mixing with the eccentrically introduced partial flow. As a result, little influence can be exerted on the swirl of the liquid to be atomized resulting in the nozzle opening and thus on the spray cone. Furthermore, tests have shown that a nozzle designed in this way works irregularly and in an uncontrollable manner. Associated with this is a fluctuating large spectrum of the drops emerging from the spray cone. This is due to the fact that the axial partial flow disturbs the air base in the mixing chamber, which influences the swirl of the eccentrically introduced partial flow.

Hohlkegelzerstäubungsdüsen werden z. B. bei der Herstellung von Farbstoffen zum Zerstäuben von Farbstoffsuspensionen in Zerstäubungstrocknern eingesetzt Dabei muß ein bestimmter Sprühwinkel der zerstäubten Suspension in einem kleinen Bereich konstant gehalten werden. Bei zu kleinem Winkel wird der Wärmeinhalt der Trockenluft nicht optimal ausgenutzt, so daß neben einem verminderten Wirkungsgrad der Anlage unvollständig getrocknete Produktteilchen die Folge sind. Ein zu großer Sprühwinkel verursacht Produktanbackungen an der Trocknerwand, die aus Sicherheits und Qualitätsgründen beseitigt werden müssen. Hierzu wird der Trocknungsprozeß immer wieder unterbrochen.Hollow cone atomizing nozzles are e.g. B. used in the production of dyes for atomizing dye suspensions in atomization dryers. A certain spray angle of the atomized suspension must be kept constant in a small area. If the angle is too small, the heat content of the dry air is not used optimally, so that in addition to a reduced efficiency of the system, incompletely dried product particles are the result. A spray angle that is too large causes product caking on the dryer wall, which must be removed for safety and quality reasons. For this purpose, the drying process is interrupted again and again.

Werden hochdisperse Textil-Farbstoffzubereitungen getrocknet, ist es erforderlich, die Trocknungsbedingungen wie z. B. die Eingangs- und Ausgangstemperaturen der Trockenluft bei einzelnen Chargen neu festzulegen. Einerseits soll ein optimaler Produktfluß erhalten werden, andererseits ist ein Qualitätsabfall z. B. durch zu hohe Temperaturbelastung während der Trocknung zu verhindern. Um dies zu erreichen, ist es erforderlich, den Mengenstrom zur Düse zu variieren.If highly disperse textile-dye preparations are dried, it is necessary to change the drying conditions, e.g. B. redefine the inlet and outlet temperatures of the dry air for individual batches. On the one hand, an optimal product flow should be obtained, B. to prevent excessive temperature during drying. To achieve this, it is necessary to vary the flow rate to the nozzle.

Bei sich ändernden Betriebsparametern, wie Änderung des Durchsatzes und damit der Strömungsgeschwindigkeit in der Düse beim Anfahren des Trockenprozesses, Änderung der Viskosität und/oder des Feststoffgehaltes der Flüssigkeit, die den Sprühwinkel beeinflussen, muß der Trocknungsprozeß unter Umständen mehrmals unterbrochen werden, um durch Austausch von Düsenteilen den Sprühwinkel zu optimieren.With changing operating parameters, such as changing the throughput and thus the flow velocity in the nozzle when starting the drying process, changing the viscosity and / or the solids content of the liquid, which affect the spray angle, the drying process may have to be interrupted several times in order to replace by Nozzle parts to optimize the spray angle.

Es stellte sich daher die Aufgabe, eine Hohlkegelzerstäubungsdüse zu entwickeln, bei der ein axialer Teilstrom der zu zerstäubenden Flüssigkeit in einer Mischkammer auf einen exzentrisch eingeleiteten Teilstrom trifft und sich die Teilstrome dadurch so intensiv vermischen, daß der Drehimpuls des aus der Düsenöffnung austretenden Gesamtstroms der Flüssigkeit dem Teilstromverhältnis entspricht und somit der Winkel des Sprühkegels einstellbar ist.It was therefore the task of developing a hollow-cone atomizing nozzle in which an axial partial flow of the liquid to be atomized meets an eccentrically introduced partial flow in a mixing chamber and the partial flows mix so intensively that the angular momentum of the total flow of the liquid emerging from the nozzle opening corresponds to the partial flow ratio and thus the angle of the spray cone is adjustable.

Gelöst wurde die Aufgabe durch eine Hohlkegelzerstäubungsdüse mit den in den Patentansprüchen 1 bis 4 gekennzeichneten Merkmalen.The object was achieved by a hollow cone atomizing nozzle with the features characterized in claims 1 to 4.

Die erfindungsgemäße Hohlkegelzerstäubungsdüse ist anhand von in der Zeichnung schematisch dargestellter Ausführungsbeispiele nachfolgend näher erläutert.
Es zeigen

  • Figur 1 eine Hohlkegelzerstäubungsdüse mit einer exzentrisch und einer koaxial angeordneten Eintrittsbohrung im Längsschnitt
  • Figur 2 dieselbe Düse im Querschnitt gemäß der Schnittlinie I-I in Figur 1
  • Figuren 3 bis 5 schematisch verschiedene Anordnungen der in das Innere des Düsengehäuses führenden Eintrittsbohrungen.
The hollow cone atomizing nozzle according to the invention is explained in more detail below with reference to exemplary embodiments shown schematically in the drawing.
Show it
  • 1 shows a hollow cone atomizing nozzle with an eccentric and a coaxially arranged inlet bore in longitudinal section
  • FIG. 2 the same nozzle in cross section according to section line II in FIG. 1
  • Figures 3 to 5 schematically different arrangements of the inlet bores leading into the interior of the nozzle housing.

Das Prinzip der Konstruktion vorliegender Hohlkegelzerstäubungsdüse, nachfolgend Düse genannt, beruht auf der Masßnahme, die zu zerstäubende Flüssigkeit in zwei oder mehreren Teilströmen in das Düsengehäuse einzuleiten, wovon mindestens einem Teilstrom ein den Sprühwinkel der Düse aufbauender Drall erteilt wird und der bzw. die weiteren Teilströme ohne Drall zugeführt werden. In einer Mischkammer der Düse werden die Teilströme überlagert, so daß sich für den aus der Düsenöffnung austretenden Gesamtstrom der Flüssigkeit ein den Winkel des Sprühkegels bestimmender Drall mit einem entsprechend der Größe der Teilströme resultierenden Drehimpuls ergibt. Mit Hilfe betätigbarer Ventile können die der Düse zuführenden Teilströme und somit der Sprühwinkel eingestellt werden.The principle of the construction of the present hollow cone atomizing nozzle, hereinafter referred to as the nozzle, is based on the measure of introducing the liquid to be atomized into the nozzle housing in two or more partial flows, of which at least one partial flow is given a swirl which builds up the spray angle of the nozzle and the further partial flow (s) can be fed without twist. The partial streams are superimposed in a mixing chamber of the nozzle, so that there is a flow out of the nozzle opening escaping total flow of the liquid results in a swirl which determines the angle of the spray cone with an angular momentum resulting in accordance with the size of the partial flows. With the help of actuatable valves, the partial flows leading to the nozzle and thus the spray angle can be adjusted.

Hierzu ist das Düsengehäuse 1 nach der in Figur 1 und 2 gezeigten Ausführungsform mit einer exzentrisch in einen Drallraum 2 mündenden Eintrittsbohrung 3 und mit einer in einem Einsatz 4 koaxial zur Düsenachse 5 angeordneten Eintrittsbohrung 6 versehen, die über eine oder mehrere Zulaufbohrungen 7 unter einem Winkel von z. B. 450 zur Düsenachse in den Drallraum mündet. An den Drallraum schließt sich eine rotationssymmetrische Mischkammer 8 an, in der sich die über die Eintrittsbohrungen 3 und 6 eingeleiteten Teilströme vermischen, so daß sich der Drehimpuls des exzentrisch eingeleiteten Teilstroms auf den gesamten zu zerstäubenden Flüssigkeitsstrom verteilt. Der Ausgang der Mischkammer ist auf die Düsenöffnung 9 geführt.For this purpose, the nozzle housing 1 according to the embodiment shown in FIGS. 1 and 2 is provided with an inlet bore 3 opening eccentrically into a swirl chamber 2 and with an inlet bore 6 arranged in an insert 4 coaxial to the nozzle axis 5, which has one or more inlet bores 7 at an angle from Z. B. 450 opens into the swirl chamber to the nozzle axis. The swirl chamber is followed by a rotationally symmetrical mixing chamber 8, in which the partial flows introduced via the inlet bores 3 and 6 mix, so that the angular momentum of the eccentrically introduced partial flow is distributed over the entire liquid flow to be atomized. The outlet of the mixing chamber is led to the nozzle opening 9.

Anstelle einer exzentzisch angeordneten Eintrittsbohrung kann auch eine zum Drallraum radial 11 oder parallel zur Düsenachse geführte Bohrung mit sich anschließenden Drall erzeugenden Einbauten, wie Drallkammerplatten oder drallerzeugenden Kanälen, vorgesehen werden. Ebenso kann die Eintrittsbohrung 6 durch eine zur Düsenachse 5 parallele 12 (Figur 5) oder aber auch eine in die Mischkammer 8 radial 10 (Figur 3) mündende Bohrung ersetzt sein.Instead of an eccentrically arranged inlet bore, it is also possible to provide a bore guided radially to the swirl chamber 11 or parallel to the nozzle axis with adjoining swirl-producing internals, such as swirl chamber plates or swirl-generating channels. Likewise, the inlet bore 6 can be replaced by a bore 12 parallel to the nozzle axis 5 (FIG. 5) or else a bore opening radially into the mixing chamber 8 10 (FIG. 3).

Die in der Zeichnung nicht dargestellten Zuleitungen für die Eintrittsbohrungen 3 und 6 können über Feinregelventile geführt sein, so daß die den Bohrungen zugeführten Teilströme und damit der Sprühwinkel der gesamten die Düsenöffnung 9 verlassenden Flüssigkeitsstromes einstellbar ist, ohne daß die Düse verändert oder Einbauten ausgetauscht werden müssen. Ferner ist dadurch eine automatische Regelung des Sprühwinkels möglich.The supply lines, not shown in the drawing, for the inlet bores 3 and 6 can be guided via fine control valves, so that the partial streams supplied to the bores and thus the spray angle of the entire liquid stream leaving the nozzle opening 9 can be adjusted without the nozzle having to be changed or internals having to be replaced . This also enables automatic control of the spray angle.

Eine weitere Ausführungsform der Düse nach der Erfindung sieht, wie in Figur 4 im Schema gezeigt, vor, daß zwei Eintrittsbohrungen exzentrisch und in Strömungsrichtung der durch sie einzuleitenden Teilströme der zu zerstäubenden Flüssigkeit zueinander entgegengesetzt in den Drallraum und die nachgeordnete Mischkammer geführt sind. Dabei können anstelle der exzentrischen Anordnung auch Drall erzeugende Einbauten für die Eintrittsbohrungen vorgesehen werden.A further embodiment of the nozzle according to the invention, as shown in the diagram in FIG. 4, provides that two inlet bores are guided eccentrically and in the flow direction of the partial streams of the liquid to be atomized to be introduced into the swirl chamber and the downstream mixing chamber opposite to one another. Instead of the eccentric arrangement, swirl-generating internals can also be provided for the inlet bores.

Mit der erfindungsgemäßen Düse ist es nun möglich, bei variablem Gesamtvolumenstrom durch die Düse, bei Schwankungen der Viskosität der zu zerstäubenden Flüssigkeit oder bei Schwankungen des Feststoffgehaltes der Flüssigkeit den Sprühwinkel nachzuregeln. Umgekehrt kann bei konstantem Volumenstrom der Sprühwinkel in weitem Bereich verändert werden.With the nozzle according to the invention it is now possible to readjust the spray angle with a variable total volume flow through the nozzle, with fluctuations in the viscosity of the liquid to be atomized or with fluctuations in the solids content of the liquid. Conversely, with a constant volume flow, the spray angle can be changed over a wide range.

Claims (4)

1. A hollow-cone atomizer nozzle, comprising a nozzle housing (1) in which is formed a rotationally symmetrical mixing chamber (8), a first and a second inlet bore for the liquid to be atomized and a nozzle orifice (9) at the outlet of the mixing chamber, the inlet bores being assigned valves which can be operated for the setting of the liquid part-streams, the first inlet bore (6) being arranged coaxial with the nozzle axis and the second inlet bore (3) opening eccentrically into the mixing chamber, wherein the first inlet bore opens into the mixing chamber at an angle to the nozzle axis via one or more feed bores (7).
2. A hollow-cone atomizer nozzle, comprising a nozzle housing (1) in which is formed a rotationally symmetrical mixing chamber (8), a first and a second inlet bore for the liquid to be atomized and a nozzle orifice (9) at the outlet of the mixing chamber, the inlet bores being assigned valves which can be operated for the setting of the liquid part-streams, the first inlet bore (6) being arranged coaxial with the nozzle axis (5), wherein the first inlet bore opens into the mixing chamber at an angle to the nozzle axis via one or more feed bores (7) and the second inlet bore opens into the mixing chamber radially or parallel to the nozzle axis, with following vortex-producing internal fitments.
3. A hollow-cone atomizer nozzle, comprising a nozzle housing (1) in which is formed a rotationally symmetrical mixing chamber (8), a first and a second inlet bore for the liquid to be atomized and a nozzle orifice (9) at the outlet of the mixing chamber, the inlet bores being assigned valves which can be operated for the setting of the liquid part-streams, wherein the first inlet bore (10) opens into the mixing chamber radially to the nozzle axis (5) and the second inlet bore (3) opens into the mixing chamber eccentrically.
4. A hollow-cone atomizer nozzle, comprising a nozzle housing (1) in which is formed a rotationally symmetrical mixing chamber (8), a first and a second inlet bore for the liquid to be atomized and a nozzle orifice (9) at the outlet of the mixing chamber, the inlet bores being assigned valves which can be operated for the setting of the liquid part-streams, wherein the first inlet bore (11) opens into the mixing chamber radially to the nozzle axis (5) and the second inlet bore (12) opens into the mixing chamber radially or parallel to the nozzle axis, with following vortex-producing internal fitments.
EP84103521A 1983-04-06 1984-03-30 Spray nozzle in the shape of a hollow cone Expired EP0121877B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103521T ATE38339T1 (en) 1983-04-06 1984-03-30 HOLLOW CONE ATOMIZATION NOZZLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833312301 DE3312301A1 (en) 1983-04-06 1983-04-06 HOLLOW CONE SPRAYING NOZZLE
DE3312301 1983-04-06

Publications (3)

Publication Number Publication Date
EP0121877A2 EP0121877A2 (en) 1984-10-17
EP0121877A3 EP0121877A3 (en) 1985-11-13
EP0121877B1 true EP0121877B1 (en) 1988-11-02

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ID=6195545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103521A Expired EP0121877B1 (en) 1983-04-06 1984-03-30 Spray nozzle in the shape of a hollow cone

Country Status (5)

Country Link
EP (1) EP0121877B1 (en)
JP (1) JPS59213462A (en)
AT (1) ATE38339T1 (en)
DE (2) DE3312301A1 (en)
DK (1) DK161947C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4197643A1 (en) 2021-12-17 2023-06-21 Technische Universität Dresden Nozzle with adjustable beam geometry, nozzle assembly and method for operating a nozzle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5013877A (en) * 1988-02-08 1991-05-07 Raychem Corporation Devices for electrical connection
DE3819745A1 (en) * 1988-06-10 1989-12-14 Basf Ag METHOD FOR THE PRODUCTION OF RIBOFLAVIN PRODUCED ON A MICROBIAL LEAD IN THE FORM OF SPRAY OR MICROGRANULATES
DE9318544U1 (en) * 1993-12-03 1994-01-27 Rubenberger, Karl, 85435 Erding Vortex chamber atomizer
DE19608349A1 (en) * 1996-03-05 1997-09-11 Abb Research Ltd Pressure atomizer nozzle
GB0426429D0 (en) * 2004-12-01 2005-01-05 Incro Ltd Nozzle arrangement and dispenser incorporating nozzle arrangement
US9745936B2 (en) * 2012-02-16 2017-08-29 Delavan Inc Variable angle multi-point injection
US11326775B2 (en) 2013-02-28 2022-05-10 Raytheon Technologies Corporation Variable swirl fuel nozzle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE222120C (en) *
US2484577A (en) * 1945-03-29 1949-10-11 Monarch Mfg Works Inc Double orifice solid cone spray nozzle
JPS525365B2 (en) * 1973-01-31 1977-02-12
CH568781A5 (en) * 1973-08-17 1975-11-14 Kurylec Michael Spray nozzle for removing dust from gases esp. smoke - whirl chamber in housing extends into dirt trap
US3908903A (en) * 1974-02-11 1975-09-30 Jr Samuel L Burns Snow making apparatus and method
US3920187A (en) * 1974-05-24 1975-11-18 Porta Test Mfg Spray head
DE2542240C3 (en) * 1975-09-23 1981-07-30 Lechler Gmbh & Co Kg, 7012 Fellbach Hollow cone nozzle for atomizing liquid
DE2733102A1 (en) * 1977-07-22 1979-02-01 Bayer Ag METHOD AND DEVICE FOR ATOMIZING LIQUIDS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4197643A1 (en) 2021-12-17 2023-06-21 Technische Universität Dresden Nozzle with adjustable beam geometry, nozzle assembly and method for operating a nozzle
DE102021133674A1 (en) 2021-12-17 2023-06-22 Technische Universität Dresden Nozzle with adjustable jet geometry, nozzle arrangement and method for operating a nozzle

Also Published As

Publication number Publication date
DK161947C (en) 1992-02-03
JPH0448502B2 (en) 1992-08-06
EP0121877A2 (en) 1984-10-17
DE3312301A1 (en) 1984-10-11
DK179584A (en) 1984-10-07
ATE38339T1 (en) 1988-11-15
DE3474917D1 (en) 1988-12-08
DK161947B (en) 1991-09-02
JPS59213462A (en) 1984-12-03
EP0121877A3 (en) 1985-11-13
DK179584D0 (en) 1984-04-05

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