EP0890654B1 - Apparatus for uniforming the gas pressure distribution at the output port of a flat-jet nozzle - Google Patents
Apparatus for uniforming the gas pressure distribution at the output port of a flat-jet nozzle Download PDFInfo
- Publication number
- EP0890654B1 EP0890654B1 EP98110783A EP98110783A EP0890654B1 EP 0890654 B1 EP0890654 B1 EP 0890654B1 EP 98110783 A EP98110783 A EP 98110783A EP 98110783 A EP98110783 A EP 98110783A EP 0890654 B1 EP0890654 B1 EP 0890654B1
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- EP
- European Patent Office
- Prior art keywords
- pipe
- gas outlet
- fact
- gas
- outlet holes
- 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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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
Definitions
- the invention relates to a device for Uniformization of the gas pressure distribution over the Outlet opening of a flat jet nozzle, in particular a flat jet nozzle for blowing off liquid applied protective metal of steel sheets.
- scraper nozzles For the production of galvanized sheet steel so-called scraper nozzles are used, the excess Zinc of the steel sheet emerging from the zinc bath by means of Blow off gas pressure. (DE 40 24 229 C1, DE-OS 20 46 441) Zur Achieving a uniformly coated steel sheet the scraper nozzles must unite over their entire length have the same gas outlet pressure as possible. This is particularly important at very low blow-off pressures.
- the invention has for its object a To create device that in front of the flat fan nozzle pending gas pressure equalized so far that the escaping gas jet over the entire length of the nozzle has extremely uniform gas outlet pressure.
- This object is achieved with a device solved the one with from the flat jet nozzle gas to be blown and an inner tube this has a flush outer tube, wherein the inner tube and the outer tube each have a large number spaced apart, in the longitudinal direction of the pipe arranged gas outlet openings and relative are mutually adjustable such that the Gas outlet openings of the inner tube with the Gas outlet openings of the outer tube depending on the degree of Adjustment partially or completely covered arrive, the gas outlet openings of the inner tube and the outer tube with partial or complete Coverage essentially symmetrical to Outlet opening of the flat jet nozzle are arranged.
- the inner tube opposite the outer tube can the openings of the outer tube and the inner tube so in overlap brought that under a higher pressure standing gas in the inner tube evenly, regulated and temporally adapted to the production process in the interior the blow-off nozzle.
- the zinc blow-off nozzle is thus over the entire nozzle length with the same pre-pressure acted upon and can in turn an even Blow-off pressure over the entire nozzle length towards the Dispense galvanized steel sheet. It is possible that required uniform blow-off pressure even at low To achieve blow-off pressures.
- a preferred embodiment of the invention Device is characterized in that either Inner tube or the outer tube fixed and the other tube is rotatably mounted. In this way the user can Outlet opening of the flat jet nozzle escaping gas pressure can be controlled very precisely and precisely.
- the inner tube can be charged with gas from two sides. This design enables the equalization further optimize the gas pressure distribution.
- the gas outlet openings preferably have in the inner tube a larger cross section than that corresponding gas outlet openings in the outer tube. This configuration also advantageously contributes Uniformization of the gas pressure distribution on the Outlet opening of the flat jet nozzle at.
- the gas outlet openings in the inner tube are preferred formed in the form of slots that run across the Longitudinal axis of the inner tube run.
- the one with the Corresponding gas outlet openings in the inner tube Gas outlet openings in the outer tube can preferably also from transverse to the pipe longitudinal axis Slots exist. This advantageous embodiment enables a stepless regulation of the Gas outlet pressure at the flat jet nozzle.
- the gas outlet openings in the outer tube can also consist of several parallel ones There are rows of holes that extend over part of the Extend pipe circumference.
- the device of the invention can be both new as well as with existing flat jet nozzles realize. If there is enough space, can the device according to the invention in an existing Flat jet nozzle within one on the flat jet nozzle attached, an opening to the interior of the Housing having a flat jet nozzle can be mounted. The device can also save space within the Flat jet nozzle can be installed. This arrangement is especially with newly manufactured flat jet nozzles expedient.
- Figure 1 shows a first embodiment of a device according to the invention.
- the device exists from a fixed, closed at one end Outer tube 1 and an inner tube rotatably mounted therein 2.
- On the inner tube 2 is a rotary connection 3 stationary gas supply line 4 connected via which Blow-off gas 12 is supplied.
- a lever 10 attached to the not rotary actuator shown is coupled.
- the outer tube 1 is via throat-shaped bearings on the flat fan nozzle (not shown) fixed.
- the outer tube 1 and the inner tube 2 each have one A large number of parallel, transverse to the longitudinal axis of the pipe Slots for the gas outlet.
- Figures 5a and 5b is shown by a rotary movement 11 via the lever 10 formed in the inner tube 2 Slots 7 with the slots 5 in the outer tube 1 in Brought coverage.
- Fig. 5a a partial Coverage of slots 5 and 7, namely a half 5b is shown in the open position full coverage or the fully open Position.
- the degree of coverage of slots 5 and 7 depends on the pressure requirement 14, the one to galvanized steel sheet 15 should act (see FIG. 7 and 8).
- Figure 3 shows a longitudinal section through the device 1, which here in an additional housing Flat jet nozzle 8 or 13 in the interior Flat jet nozzle 9 is mounted (see FIGS. 7 and 8).
- the outer tube 1 which is closed at the end, projects through a circular opening in the wall of the flat jet nozzle in their interior 13.
- the outer tube 1 faces outside the flat jet nozzle 8 or 9 on a flange that with the flat jet nozzle is welded or screwed. It it can be seen that the gas outlet openings arranged symmetrically within the flat jet nozzle are, i.e. the distance of the far left Gas outlet opening to the left end wall of the nozzle and the Distance from the rightmost gas outlet to right nozzle end wall are the same.
- Fig. 4 shows a preferred variant of the device according to the invention.
- both ends of the Inner tube via rotary connections 3 each with a stationary gas supply line 4 connected.
- the outer tube penetrates the flat jet nozzle 8 or 9 both on their right and on their left Face.
- the assembly of the outer tube 1 and inner tube 2 existing control unit can be used as required in the interior 13 of the flat jet nozzle 9 (see FIG. 8) or in one the flat jet nozzle 8 attached housing 16, which is open to the interior 13 of the flat jet nozzle 8 (see Fig. 7).
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Nozzles (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Lasers (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Vergleichmäßigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse, insbesondere einer Flachstrahldüse zum Abblasen von flüssig aufgetragenem Schutzmetall von Stahlblechen.The invention relates to a device for Uniformization of the gas pressure distribution over the Outlet opening of a flat jet nozzle, in particular a flat jet nozzle for blowing off liquid applied protective metal of steel sheets.
Zur Produktion von verzinktem Stahlblech werden sogenannte Abstreifdüsen verwendet, die das überschüssige Zink des aus dem Zinkbad austretenden Stahlblechs mittels Gasdruck abblasen. (DE 40 24 229 C1, DE-OS 20 46 441) Zur Erzielung eines gleichmäßig beschichteten Stahlblechs müssen die Abstreifdüsen über ihre gesamte Länge einen möglichst gleichen Gasaustrittsdruck haben. Dies ist besonders wichtig bei sehr geringen Abblasdrücken.For the production of galvanized sheet steel so-called scraper nozzles are used, the excess Zinc of the steel sheet emerging from the zinc bath by means of Blow off gas pressure. (DE 40 24 229 C1, DE-OS 20 46 441) Zur Achieving a uniformly coated steel sheet the scraper nozzles must unite over their entire length have the same gas outlet pressure as possible. This is particularly important at very low blow-off pressures.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, die den vor der Flachstrahldüse anstehenden Gasdruck soweit vergleichmäßigt, daß der austretende Gasstrahl über die gesamte Düsenlänge einen außerordentlich gleichmäßigen Gasaustrittsdruck aufweist.The invention has for its object a To create device that in front of the flat fan nozzle pending gas pressure equalized so far that the escaping gas jet over the entire length of the nozzle has extremely uniform gas outlet pressure.
Diese Aufgabe wird erfindungsgemäß mit einer Vorrichtung gelöst, die ein mit aus der Flachstrahldüse auszublasenden Gas beaufschlagbares Innenrohr und ein dieses bündig umschließendes Außenrohr aufweist, wobei das Innenrohr und das Außenrohr jeweils eine Vielzahl zueinander beabstandeter, in Rohrlängsrichtung angeordneter Gasaustrittsöffnungen aufweisen und relativ zueinander derart verstellbar sind, daß die Gasaustrittsöffnungen des Innenrohrs mit den Gasaustrittsöffnungen des Außenrohrs je nach Grad der Verstellung teilweise oder vollständig in Überdeckung gelangen, wobei die Gasaustrittsöffnungen des Innenrohres und des Außenrohres bei teilweiser oder vollständiger Überdeckung im wesentlichen symmetrisch zur Austrittsöffnung der Flachstrahldüse angeordnet sind.This object is achieved with a device solved the one with from the flat jet nozzle gas to be blown and an inner tube this has a flush outer tube, wherein the inner tube and the outer tube each have a large number spaced apart, in the longitudinal direction of the pipe arranged gas outlet openings and relative are mutually adjustable such that the Gas outlet openings of the inner tube with the Gas outlet openings of the outer tube depending on the degree of Adjustment partially or completely covered arrive, the gas outlet openings of the inner tube and the outer tube with partial or complete Coverage essentially symmetrical to Outlet opening of the flat jet nozzle are arranged.
Mit der erfindungsgemäßen Vorrichtung wird eine optimale Vergleichmäßigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse erreicht, so daß mit einer solchen Düse das überschüssige Zink eines aus einem Zinkbad austretenden Stahlblechs besonders gleichmäßig abgestreift werden kann. Durch Verstellen des Innenrohres gegenüber dem Außenrohr können die Öffnungen des Außenrohres und des Innenrohres derart in Überdeckung gebracht werden, daß das unter einem höheren Druck stehende Gas im Innenrohr gleichmäßig, geregelt und zeitlich dem Produktionsprozeß angepaßt in den Innenraum der Abblasdüse gelangt. Die Zinkabblasdüse wird somit über die gesamte Düsenlänge mit dem gleichen Vordruck beaufschlagt und kann ihrerseits einen gleichmäßigen Abblasdruck über die gesamte Düsenlänge auf das zu verzinkende Stahlblech abgeben. Es ist so möglich, den geforderten gleichmäßigen Abblasdruck auch bei niedrigen Abblasdrücken zu erreichen.With the device according to the invention, an optimal Uniformization of the gas pressure distribution over the Exit opening of a flat jet nozzle reached so that with such a nozzle the excess zinc one out a steel sheet escaping zinc bath especially can be stripped evenly. By adjusting the The inner tube opposite the outer tube can the openings of the outer tube and the inner tube so in overlap brought that under a higher pressure standing gas in the inner tube evenly, regulated and temporally adapted to the production process in the interior the blow-off nozzle. The zinc blow-off nozzle is thus over the entire nozzle length with the same pre-pressure acted upon and can in turn an even Blow-off pressure over the entire nozzle length towards the Dispense galvanized steel sheet. It is possible that required uniform blow-off pressure even at low To achieve blow-off pressures.
Eine bevorzugte Ausgestaltung der erfindungsgemäßen Vorrichtung ist dadurch gekennzeichnet, daß entweder das Innenrohr oder das Außenrohr fixiert und das andere Rohr drehbar gelagert ist. Auf diese Weise kann der an der Austrittsöffnung der Flachstrahldüse austretende Gasdruck sehr genau und fein gesteuert werden. A preferred embodiment of the invention Device is characterized in that either Inner tube or the outer tube fixed and the other tube is rotatably mounted. In this way the user can Outlet opening of the flat jet nozzle escaping gas pressure can be controlled very precisely and precisely.
Eine andere vorteilhafte Ausgestaltung besteht darin, daß das Innenrohr von zwei Seiten mit Gas beaufschlagbar ist. Durch diese Ausgestaltung läßt sich die Vergleichmäßigung der Gasdruckverteilung weiter optimieren.Another advantageous embodiment is that the inner tube can be charged with gas from two sides. This design enables the equalization further optimize the gas pressure distribution.
Vorzugsweise haben die Gasaustrittsöffnungen im Innenrohr einen größeren Querschnitt als die damit korrespondierenden Gasaustrittsöffnungen im Außenrohr. Auch diese Ausgestaltung trägt vorteilhaft zur Vergleichmäßigung der Gasdruckverteilung an der Austrittsöffnung der Flachstrahldüse bei.The gas outlet openings preferably have in the inner tube a larger cross section than that corresponding gas outlet openings in the outer tube. This configuration also advantageously contributes Uniformization of the gas pressure distribution on the Outlet opening of the flat jet nozzle at.
Die Gasaustrittsöffnungen im Innenrohr sind vorzugsweise in Form von Schlitzen ausgebildet, die quer zur Längsachse des Innenrohrs verlaufen. Die mit den Gasaustrittsöffnungen im Innenrohr korrespondierenden Gasaustrittsöffnungen im Außenrohr können vorzugsweise ebenfalls aus quer zur Rohrlängsachse verlaufenden Schlitzen bestehen. Diese vorteilhafte Ausgestaltung ermöglicht eine stufenlose Regelung des Gasaustrittsdrucks an der Flachstrahldüse.The gas outlet openings in the inner tube are preferred formed in the form of slots that run across the Longitudinal axis of the inner tube run. The one with the Corresponding gas outlet openings in the inner tube Gas outlet openings in the outer tube can preferably also from transverse to the pipe longitudinal axis Slots exist. This advantageous embodiment enables a stepless regulation of the Gas outlet pressure at the flat jet nozzle.
Sofern eine stufenweise Regelung des Gasaustrittsdrucks erwünscht ist, können die Gasaustrittsöffnungen im Außenrohr aber alternativ auch aus mehreren parallelen Lochreihen bestehen, die sich über einen Teil des Rohrumfangs erstrecken.If a gradual regulation of the gas outlet pressure is desired, the gas outlet openings in the Alternatively, the outer tube can also consist of several parallel ones There are rows of holes that extend over part of the Extend pipe circumference.
Für die Regelung des Gasaustrittsdrucks ist es ferner vorteilhaft, wenn entweder das Innenrohr oder das Außenrohr mit einem Drehantrieb gekoppelt ist.It is also used to regulate the gas outlet pressure advantageous if either the inner tube or the Outer tube is coupled to a rotary drive.
Die erfindungsgemäße Vorrichtung läßt sich sowohl bei neuen als auch bei bereits vorhandenen Flachstrahldüsen verwirklichen. Sofern genügend Platz vorhanden ist, kann die erfindungsgemäße Vorrichtung bei einer vorhandenen Flachstrahldüse innerhalb eines an der Flachstrahldüse angebrachten, eine Öffnung zum Innenraum der Flachstrahldüse aufweisenden Gehäuse montiert werden. Platzsparend kann die Vorrichtung aber auch innerhalb der Flachstrahldüse montiert werden. Diese Anordnung ist insbesondere bei neu herzustellenden Flachstrahldüsen zweckmäßig.The device of the invention can be both new as well as with existing flat jet nozzles realize. If there is enough space, can the device according to the invention in an existing Flat jet nozzle within one on the flat jet nozzle attached, an opening to the interior of the Housing having a flat jet nozzle can be mounted. The device can also save space within the Flat jet nozzle can be installed. This arrangement is especially with newly manufactured flat jet nozzles expedient.
Im folgenden wird die Erfindung anhand einer Ausführungsbeispiele darstellenden Zeichnung näher erläutert. Darin zeigen schematisch:
- Fig. 1
- eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung mit quer zur Längsachse des Außenrohrs verlaufenden Schlitzen für den Gasaustritt;
- Fig. 2
- eine perspektivische Ansicht einer zweiten Ausführungsform der erfindungsgemäßen Vorrichtung mit im Außenrohr ausgebildeten Lochreihen für den Gasaustritt;
- Fig. 3
- einen Längsschnitt durch eine innerhalb bzw. an einer Flachstrahldüse montierten erfindungsgemäßen Vorrichtung mit einseitigem Gaseintritt;
- Fig. 4
- einen Längsschnitt durch eine innerhalb bzw. an einer Flachstrahldüse montierten erfindungsgemäßen Vorrichtung mit einem von zwei Seiten mit Gas beaufschlagbaren Innenrohr;
- Fig. 5
- einen Querschnitt durch das Außenrohr und das Innenrohr der Vorrichtung gemäß Fig. 1, wobei Fig. 5a eine halb geöffnete Stellung und Fig. 5b eine voll geöffnete Stellung der Gasaustrittsöffnungen zeigen;
- Fig. 6
- einen Querschnitt durch das Außenrohr und das Innenrohr der Vorrichtung gemäß Fig. 2, wobei Fig. 6a eine halb geöffnete Stellung und Fig. 6b eine voll geöffnete Stellung der Gasaustrittsöffnungen zeigen;
- Fig. 7
- einen Querschnitt durch eine Zinkabstreifdüse, auf der eine erfindungsgemäße Vorrichtung in einem Zusatzgehäuse montiert ist; und
- Fig. 8
- einen Querschnitt durch eine Zinkabstreifdüse, in deren Innenraum eine erfindungsgemäße Vorrichtung angeordnet ist.
- Fig. 1
- a perspective view of an inventive device with transverse to the longitudinal axis of the outer tube slots for the gas outlet;
- Fig. 2
- a perspective view of a second embodiment of the device according to the invention with rows of holes formed in the outer tube for the gas outlet;
- Fig. 3
- a longitudinal section through a device according to the invention mounted inside or on a flat jet nozzle with one-sided gas inlet;
- Fig. 4
- a longitudinal section through a device according to the invention mounted inside or on a flat jet nozzle with an inner tube which can be acted upon by gas from two sides;
- Fig. 5
- 2 shows a cross section through the outer tube and the inner tube of the device according to FIG. 1, FIG. 5a showing a half-open position and FIG. 5b a fully open position of the gas outlet openings;
- Fig. 6
- 3 shows a cross section through the outer tube and the inner tube of the device according to FIG. 2, FIG. 6a showing a half-open position and FIG. 6b a fully open position of the gas outlet openings;
- Fig. 7
- a cross section through a zinc scraper nozzle on which a device according to the invention is mounted in an additional housing; and
- Fig. 8
- a cross section through a zinc scraper nozzle, in the interior of which a device according to the invention is arranged.
Figur 1 zeigt ein erstes Ausführungsbeispiel einer
erfindungsgemäßen Vorrichtung. Die Vorrichtung besteht
aus einem feststehenden, an einem Ende geschlossenen
Außenrohr 1 und einem darin drehbar gelagerten Innenrohr
2. An dem Innenrohr 2 ist über einen Drehanschluß 3 eine
stationäre Gaszuleitung 4 angeschlossen, über die das
Abblasgas 12 zugeführt wird. Ferner ist an dem Innenrohr
2 ein Hebel 10 angebracht, der mit einem nicht
dargestellten Drehantrieb gekoppelt ist. Das Außenrohr 1
ist über kehlenförmige Lager an der Flachstrahldüse
(nicht gezeigt) fixiert.Figure 1 shows a first embodiment of a
device according to the invention. The device exists
from a fixed, closed at one
Das Außenrohr 1 und das Innenrohr 2 weisen jeweils eine
Vielzahl paralleler, quer zur Rohrlängsachse verlaufende
Schlitze für den Gasaustritt auf. Wie in den Figuren 5a
und 5b gezeigt ist, werden durch eine Drehbewegung 11
über den Hebel 10 die im Innenrohr 2 ausgebildeten
Schlitze 7 mit den Schlitzen 5 im Außenrohr 1 in
Überdeckung gebracht. Während in Fig. 5a eine teilweise
Überdeckung der Schlitze 5 und 7, nämlich eine halb
geöffnete Stellung gezeigt ist, zeigt Fig. 5b eine
vollständige Überdeckung bzw. die voll geöffnete
Stellung. Der Grad der Überdeckung der Schlitze 5 und 7
richtet sich nach dem Druckbedarf 14, der auf ein zu
verzinkendes Stahlblech 15 wirken soll (vgl. Figuren 7
und 8).The
Wie aus Figur 2 in Verbindungen mit den Figuren 6a und 6b
zu erkennen ist, können im Außenrohr 1 anstelle von
Schlitzen auch parallel zueinander verlaufende Lochreihen
6 vorgesehen sein, die sich über einen Teil des
Rohrumfangs erstrecken. Durch Drehen des Innenrohres 2
können die Gasaustrittsöffnungen 6 im Außenrohr 1
stufenweise mit den zugeordneten Schlitzen 7 des
Innenrohrs 2 in Überdeckung gebracht werden.As in Figure 2 in connection with Figures 6a and 6b
can be seen in the
Figur 3 zeigt einen Längsschnitt durch die Vorrichtung
gemäß Fig. 1, die hier in einem Zusatzgehäuse einer
Flachstrahldüse 8 bzw. im Innenraum 13 einer
Flachstrahldüse 9 montiert ist (vgl. Figuren 7 und 8).
Das stirnseitig geschlossene Außenrohr 1 ragt durch eine
kreisförmige Öffnung in der Wandung der Flachstrahldüse
in deren Innenraum 13. Das Außenrohr 1 weist außerhalb
der Flachstrahldüse 8 bzw. 9 einen Flansch auf, der mit
der Flachstrahldüse verschweißt oder verschraubt ist. Es
ist zu erkennen, daß die Gasaustrittsöffnungen
symmetrisch innerhalb der Flachstrahldüse angeordnet
sind, d.h. der Abstand der äußersten linken
Gasaustrittsöffnung zur linken Düsenstirnwand und der
Abstand der äußersten rechten Gasaustrittsöffnung zur
rechten Düsenstirnwand sind gleich.Figure 3 shows a longitudinal section through the
Auch ist deutlich zu erkennen, daß die
Gasaustrittsöffnungen im Innenrohr 2 einen größeren
Querschnitt aufweisen als die ihnen zugeordneten
Gasaustrittsöffnungen im Außenrohr 1, und zwar sowohl in
bezug auf die Schlitzbreite als auch in bezug auf die
Schlitzlänge (vgl. Figur 5b).It can also be clearly seen that the
Gas outlet openings in the inner tube 2 a larger
Have cross-section than that assigned to them
Gas outlet openings in the
Fig. 4 zeigt eine bevorzugte Variante der
erfindungsgemäßen Vorrichtung. Hier sind beide Enden des
Innenrohres über Drehanschlüsse 3 jeweils mit einer
stationären Gaszuleitung 4 verbunden. Dementsprechend
durchdringt das Außenrohr die Flachstrahldüse 8 bzw. 9
sowohl an deren rechten als auch an deren linken
Stirnseite.Fig. 4 shows a preferred variant of the
device according to the invention. Here are both ends of the
Inner tube via
Die Montage der aus Außenrohr 1 und Innenrohr 2
bestehenden Regeleinheit kann je nach Bedarf im Innenraum
13 der Flachstrahldüse 9 (vgl. Fig. 8) oder in einem auf
der Flachstrahldüse 8 angebrachten Gehäuse 16 erfolgen,
das zum Innenraum 13 der Flachstrahldüse 8 hin offen ist
(vgl. Fig. 7).The assembly of the
Claims (10)
- A device for balancing out the gas pressure distribution over the outlet hole (14) of a fan nozzle (9), characterized by an internal pipe (2), which can be charged with the gas to be purged from the fan nozzle (8, 9), and is snugly enveloped by an external pipe (1), wherein the internal pipe (2) and external pipe (1) each have numerous gas outlet holes (5, 6, 7) spaced apart over the length of the pipes, and can be adjusted relative to each other in such a way that the gas outlet holes (7) of the internal pipe (2) partially or completely cover the gas outlet holes (5, 6) of the external pipe (1), depending on the degree of adjustment, wherein the gas outlet holes (5, 6, 7) of the internal pipe (2) and external pipe (1) while partially or completely covering each other are arranged essentially symmetrically to the outlet hole (14) of the fan nozzle (8, 9).
- A device according to claim 1, characterized by the fact that the internal pipe (2) or external pipe (1) is fixed, and the other pipe (internal pipe (2) or external pipe (1)) is pivoted.
- A device according to claim 1 or 2, characterized by the fact that the internal pipe (2) can be charged with gas from two sides.
- A device according to one of the preceding claims, characterized by the fact that the gas outlet holes (7) in the internal pipe (2) corresponding to the gas inlet holes (5, 6) in the external pipe (1) have a relatively larger cross section.
- A device according to one of the preceding claims, characterized by the fact that the gas outlet holes (7) in the internal pipe (2) consist of slits running transverse to its longitudinal axis.
- A device according to claim 5, characterized by the fact that the gas outlet holes in the external pipe (1) consist of slits (5) running transverse to its longitudinal axis.
- A device according to claim 5, characterized by the fact that the gas outlet holes in the external pipe (1) consist of series of holes (6) that run transverse to its longitudinal axis over a portion of its periphery.
- A device according to one of the preceding claims, characterized by the fact that the internal pipe (2) or external pipe (1) is coupled with a rotary operating mechanism.
- A device according to one of the preceding claims, characterized by the fact that said device is mounted inside a casing that is attached to the fan nozzle (8) and has a hole to the interior of the fan nozzle (8).
- A device according to one of claims 1 to 8, characterized by the fact that said device is mounted inside the fan nozzle (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19729232A DE19729232C1 (en) | 1997-07-09 | 1997-07-09 | Device for equalizing the gas pressure distribution through the outlet opening of a flat jet nozzle |
| DE19729232 | 1997-07-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0890654A1 EP0890654A1 (en) | 1999-01-13 |
| EP0890654B1 true EP0890654B1 (en) | 2001-08-29 |
Family
ID=7835067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98110783A Expired - Lifetime EP0890654B1 (en) | 1997-07-09 | 1998-06-12 | Apparatus for uniforming the gas pressure distribution at the output port of a flat-jet nozzle |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0890654B1 (en) |
| AT (1) | ATE204925T1 (en) |
| DE (2) | DE19729232C1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19954231C1 (en) * | 1999-11-04 | 2000-12-28 | Duma Masch Anlagenbau | Device for averaging the gas pressure distribution over the outlet opening of a flat beam nozzle has a stacking-up batten between the inner wall of the housing and the outer wall of the distribution pipe |
| ITMI20111131A1 (en) * | 2011-06-21 | 2012-12-22 | Danieli Off Mecc | GENERATOR FOR GAS JET GENERATION FOR METAL TAPE COATING PROCESSES |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938468A (en) * | 1970-04-29 | 1976-02-17 | Wheeling-Pittsburgh Steel Corporation | Apparatus for wiping liquid from a strip |
| JPS6058785B2 (en) * | 1981-09-16 | 1985-12-21 | 日新製鋼株式会社 | Nozzle header of continuous melt plating equipment |
| JPS6082652A (en) * | 1983-10-07 | 1985-05-10 | Nisshin Steel Co Ltd | Gas throttling device |
| US4499853A (en) * | 1983-12-09 | 1985-02-19 | Rca Corporation | Distributor tube for CVD reactor |
| DE4024229C1 (en) | 1990-07-31 | 1991-07-18 | Heinrich 4100 Duisburg De Pannenbecker | |
| JPH04285147A (en) * | 1991-03-14 | 1992-10-09 | Kawasaki Steel Corp | Gas wiping nozzle |
-
1997
- 1997-07-09 DE DE19729232A patent/DE19729232C1/en not_active Expired - Lifetime
-
1998
- 1998-06-12 EP EP98110783A patent/EP0890654B1/en not_active Expired - Lifetime
- 1998-06-12 DE DE59801291T patent/DE59801291D1/en not_active Expired - Lifetime
- 1998-06-12 AT AT98110783T patent/ATE204925T1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ATE204925T1 (en) | 2001-09-15 |
| EP0890654A1 (en) | 1999-01-13 |
| DE19729232C1 (en) | 1999-04-08 |
| DE59801291D1 (en) | 2001-10-04 |
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