EP0846930B1 - Device for uniform feeding of a heat treatment gas onto the surface of a workpiece - Google Patents
Device for uniform feeding of a heat treatment gas onto the surface of a workpiece Download PDFInfo
- Publication number
- EP0846930B1 EP0846930B1 EP97121603A EP97121603A EP0846930B1 EP 0846930 B1 EP0846930 B1 EP 0846930B1 EP 97121603 A EP97121603 A EP 97121603A EP 97121603 A EP97121603 A EP 97121603A EP 0846930 B1 EP0846930 B1 EP 0846930B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- plane
- floor
- openings
- set forth
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000013021 overheating Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Images
Classifications
-
- 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
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
- F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
- F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates
Definitions
- the invention relates to a device for uniform Loading a flat surface of a workpiece, in particular the end face of a band bundle, with a heat treatment gas, which in the preamble of Claim 1 specified genus.
- Such a device as for the high temperature zone a grate cooler, especially for cement clinker, is to be used, for example, from DE-OS 24 54 202 and has a flat nozzle bottom and several punctiform openings in the bottom of the nozzle on the single, discrete gas jets on the plane Straighten the surface of the workpiece; the openings are according to a given pattern on straight lines arranged in the nozzle base, so that each row of holes a forms slit-shaped nozzle opening.
- a grate plate for a clinker cooler is known, in its surface Openings for the passage of cooling air open out.
- the surface of the grate plate is between the openings with guiding surfaces for the Bulk clinker provided, which is thereby distributed on the grate plate so that their Surface is evenly tempered.
- GB-A-12548 A.D 1911 also describes a spray device for a mixture Compressed air / paint with a spray head, which contains the features of the preamble of claim 1, and its strip-shaped outlet area through three superimposed and pressed plates is formed. In the big areas the plates have passage channels in different directions, so that from the outlet openings, which are located on the end face of the block thus formed, Exit beams in different directions.
- the new blowing system is therefore particularly suitable for convective heat transfer on the end faces of coils, their arrangement to the blowing system not from is determined in advance and from batch to batch can change. So the new blowing system has it Advantages of from German patent specification 35 03 089 known device, but without the disadvantages, namely the need for some centering of the blowing system on the coil end faces to be heated in To have to buy.
- Another extremely beneficial application for the device according to the invention is the production of a high heat transfer to small parts, such as B. ball bearing rings, that on one surface, essentially one flat layer with a fluid, e.g. B. a cooling gas, to be charged.
- a fluid e.g. B. a cooling gas
- Such a device has the Advantage of the special orientation of the ball bearing rings no requirements were placed on the nozzle system become. It is sufficient for. B., the rings on an appropriate Roll under the blowing device past move.
- the four are designed as bores circular nozzle openings 1, 2, 3, 4 combined to form a nozzle opening group 5.
- the adjacent nozzle openings 1-4 of a group 5 have one another smaller distance than from the nearest nozzle opening 1-4 one neighboring group.
- the nozzle base 6 is a flat sheet. Several such groups 5 of nozzle openings 1 up to 4 form the entirety of the nozzle openings in the nozzle base.
- the Deflection devices 7 consist of a cross section of the deflected jet considered, U-shaped sheets, i.e. channel-like guide elements, with the joining surface 10 created by the inclined section on which the nozzle openings containing planar nozzle bottom 6 are placed. Through the corresponding sloping section the desired deflection angle is between 15 ° and 45 °, as in the example illustrated case, as mentioned, 45 °.
- the projection of the deflected nozzle jets forms an example and according to the invention in case shown for two adjacent nozzle openings divided by 360 ° the number four of the nozzle openings equal 90 °.
- the devices 7 are for Jet deflection on the downstream side of the nozzle openings 1 to 4. As an alternative for this purpose, they can also be arranged on the inflow side.
- the distance between the closest nozzle openings 1-4 adjacent Nozzle opening groups 5 is at least 1.5 times the smallest distance between the nearest nozzle openings 1-4 in a group 5.
- the geometrically free nozzle surface in the projection makes it flat Nozzle plate 6 or the reference plane of the nozzle plate 6 between 2% and 10% of the associated total area of the nozzle base 6 or its reference plane.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Spray Control Apparatus (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur gleichmäßigen
Beaufschlagung einer planen Oberfläche eines Werkstückes,
insbesondere der Stirnfläche eines Bandbundes, mit einem Wärmebehandlungsgas,
der im Oberbegriff des
Anspruchs 1 angegebenen Gattung.The invention relates to a device for uniform
Loading a flat surface of a workpiece,
in particular the end face of a band bundle, with a heat treatment gas,
which in the preamble of
Eine solche Vorrichtung, wie sie für die Hochtemperaturzone eines Rostkühlers, insbesondere für Zementklinker, eingesetzt werden soll, geht beispielsweise aus der DE-OS 24 54 202 hervor und weist einen ebenen Düsenboden sowie mehrere punktförmige Öffnungen in dem Düsenboden auf, die einzelne, diskrete Gasstrahlen auf die plane Oberfläche des Werkstückes richten; die Öffnungen sind entsprechend einem vorgegebenen Muster auf geraden Linien in dem Düsenboden angeordnet, so daß jede Lochreihe eine schlitzförmige Düsenöffnung bildet. Such a device as for the high temperature zone a grate cooler, especially for cement clinker, is to be used, for example, from DE-OS 24 54 202 and has a flat nozzle bottom and several punctiform openings in the bottom of the nozzle on the single, discrete gas jets on the plane Straighten the surface of the workpiece; the openings are according to a given pattern on straight lines arranged in the nozzle base, so that each row of holes a forms slit-shaped nozzle opening.
Aus der DE-A-22 35 510 ist eine Rostplatte für einen Klinkerkühler bekannt, in deren Oberfläche Öffnungen für den Durchtritt von Kühlluft münden. Die Oberfläche der Rostplatte ist zwischen den Öffnungen mit quer zum Guttransport verlaufenden Leitflächen für den schüttgutartigen Klinker versehen, der dadurch auf der Rostplatte so verteilt wird, dass ihre Oberfläche gleichmäßig temperiert ist.From DE-A-22 35 510 a grate plate for a clinker cooler is known, in its surface Openings for the passage of cooling air open out. The surface of the grate plate is between the openings with guiding surfaces for the Bulk clinker provided, which is thereby distributed on the grate plate so that their Surface is evenly tempered.
Weiterhin geht aus der GB-A-12548 A.D 1911 eine Sprühvorrichtung für ein Gemisch
Pressluft/Farbe mit einem Sprühkopf hervor, die die Merkmale des Oberbegriffes des Anspruchs 1 enthält, und dessen leistenförmiger Auslassbereich durch
drei aufeinanderliegende und zusammengepresste Platten gebildet wird. In die großen Flächen
der Platten sind Durchlasskanäle in jeweils unterschiedlichen Richtungen eingearbeitet,
so dass aus den Auslassöffnungen, die sich an der Stirnseite des so gebildeten Blocks befinden,
Strahlen in unterschiedlichen Richtungen austreten. GB-A-12548 A.D 1911 also describes a spray device for a mixture
Compressed air / paint with a spray head, which contains the features of the preamble of
Weiterhin geht aus der US-PS 41 55 701 eine für Brenner benutzte Mischeinrichtung hervor, die in einem Gasstrahl einen Drall erzeugt und dadurch die zur guten Verbrennung erforderliche Mischung von Gasströmen herbeiführt. Würde man eine solche Vorrichtung gegenüber einer Prallfläche anordnen, wie sie die zu behandelnde plane Oberfläche eines Werkstückes darstellt, so würde sich auf dieser Prallfläche eine Verteilung des Wärmeübergangskoeffizienten einstellen, wie sie sich für normale Schlitzdüsen ergibt. Der einzige Unterschied gegenüber üblichen geraden besteht darin, daß die Auftrefflinie und damit die Linien, welche die Maxima der örtlichen Wärmeübergangskoeffizienten miteinander verbinden, ebenfalls gekrümmt sind.Furthermore, from US-PS 41 55 701 one for burners used mixing device in a gas jet creates a swirl and thereby the good combustion brings about the required mixture of gas flows. Would such a device against a baffle arrange how the flat surface to be treated represents a workpiece, so would on this Baffle a distribution of the heat transfer coefficient adjust as they are for normal slot nozzles results. The only difference from usual straight is that the line of impact and thus the lines, which are the maxima of the local heat transfer coefficients connect with each other, are also curved.
Weiterhin sind aus der US-PS 42 61 517 und US-PS 38 87 135 Vorrichtungen bekannt, bei denen der Strahl zur Achse, um welche die Drehung erfolgt, fokussiert wird; würde man mittels einer solchen Vorrichtung die Stirnfläche eines Bandbundes beblasen, so würde sich ein Stau im Zentrum ergeben, so daß keine ungehinderte Überströmung der Stirnfläche des Bandbundes und damit keine gleichmäßige Beaufschlagung mit dem Gas mehr möglich ist.Furthermore, from US-PS 42 61 517 and US-PS 38 87 135 Devices known in which the beam to the axis to which the rotation takes place is focused; one would the end face of a Blowing the band, so there would be a traffic jam in the center result so that no unhindered overflow of the end face of the band and therefore no uniform application is more possible with the gas.
Die besonders gleichmäßige Beaufschlagung der planen Oberfläche eines Werkstückes mit einem Gas spielt überall da eine Rolle, wo mittels dieses strömenden Gases Wärme auf das Werkstück übertragen werden muß, da nur dann ein gleichmäßiger Wärmeübergang oder gegebenenfalls auch Stoffaustausch zwischen Gasstrom und Wärme gewährleistet ist, ohne daß größere Unterschiede im örtlichen Wärmeübergangskoeffizienten zu unterschiedlichen Temperaturen bzw. Unterschiedliche Aufheizung des Werkstückes führen. Dies stellt beispielsweise beim Anwärmen von Metallbandbunden ein großes Problem dar. Unter einem "Metallbandbund" versteht man zu einem Zylinder aufgewickelte Blechbänder, beispielsweise aus einer Aluminiumlegierung. The particularly even application of the flat surface a workpiece with a gas plays everywhere a role where by means of this flowing gas heat the workpiece must be transferred because only then uniform heat transfer or possibly also Mass transfer between gas flow and heat guaranteed is without major differences in the local heat transfer coefficient at different temperatures or lead to different heating of the workpiece. This is the case, for example, when heating up metal coils a big problem. Under a "metal band" one understands sheet metal strips wound into a cylinder, for example from an aluminum alloy.
Zur Abkürzung der Glühzeit solcher Metallbandbunde wird angestrebt, den Wärmeübergang in einem Kammerofen, wie er beispielsweise in der Aluminiumindustrie zum Glühen von Leichtmetallbandbunden eingesetzt wird, so hoch wie möglich zu treiben. Führt nun das verwendete Beblasungssystem zu großen örtlichen Unterschieden im Wärmeübergang, so können sich lokale Überhitzungen einstellen, die Verfärbungen der Metallbändern bewirken und außerdem die angestrebten metallurgischen Eigenschaften der Bänder beeinträchtigen können.To shorten the glow time of such metal coils aimed at heat transfer in a chamber furnace like him for example in the aluminum industry for annealing Light metal strapping is used as high as possible to drive. Now leads the blowing system used to large local differences in heat transfer, so local overheating can occur, the discoloration of the metal bands and also the desired ones impair the metallurgical properties of the strips can.
Die bisher üblichen Beblasungssysteme, mit denen ein höherer Wärmeübergang angestrebt wird, weisen Loch- oder Schlitzdüsen auf, die senkrechte auf die Oberfläche des Metallbundes auftreffende Prallstrahlen erzeugen; werden nun lokale Überhitzungen festgestellt, so bleibt vielfach keine andere Wahl als den Gesamt-Volumenstrom zu reduzieren und dadurch die hohen örtlichen Wärmeübergangskoeffizienten zu vermeiden.The usual blowing systems with which a higher one Heat transfer is aimed for, perforated or Slot nozzles on, the vertical on the surface of the Generate collision impinging metal bundle; become local overheating has now been determined, so remains in many cases no choice but to reduce the total volume flow and thereby the high local heat transfer coefficients to avoid.
Die Lösung dieser Aufgabe wird in der Deutschen Patentschrift 35 03 089 für den Sonderfall beschrieben, daß eine gleichmäßige Beaufschlagung mit einer rotationssymmetrischen, durch mehrere, schlitzartige Öffnungen in einem Düsenboden angeordnete Vorrichtung erzielt wird, wobei die Düsenstrahlen gleichsinnig gegen die Beaufschlagungfläche geneigt sind. Dieser Sonderfall trifft dann zu, wenn die rotationssymmetrische Vorrichtung genau oder zumindest hinreichend genau auf die ebenfalls rotationssymmetrische Stirnfläche eines Bandbundes zentriert werden kann. In der Praxis ist dies jedoch kaum der Fall, so daß dann, wenn eine nicht rotationssymmetrische Beaufschlagungssituation vorliegt, wesentliche Nachteile in Kauf zu nehmen sind, insbesondere durch starke Anströmung der Ränder der Bandbundstirnflächen, wo dann trotz des hohen Aufwandes mit der vorbeschriebenen Vorrichtung unzulässige Überhitzungen auftreten. The solution to this problem is in the German patent 35 03 089 for the special case that a uniform application of a rotationally symmetrical, through several, slot-like openings in a device arranged in a nozzle bottom is achieved, the nozzle jets being directed in the same direction against the surface of action are inclined. This special case applies if the rotationally symmetrical device exactly or at least with sufficient accuracy to the also rotationally symmetrical Be centered on the end face of a band can. In practice, however, this is hardly the case, so that then when a non-rotationally symmetrical loading situation there are significant disadvantages to buying are taking, especially by strong inflow of Edges of the band collar end faces, where then despite the high Expenses impermissible with the device described above Overheating occurs.
Diese Nachteile werden mit der Vorrichtung nach der Erfindung vermieden, weil nunmehr die Düsenöffnungen für sich in Gruppen angeordnet sind und innerhalb dieser Gruppen, deren Beaufschlagungsfläche gegenüber der üblichen Gesamtbeaufschlagungsfläche klein ist, bereits eine hinreichende Verwirbelung und sowie eine Drehbewegung in der Strömung auftritt, so daß punktweise Überhitzungen in der Nähe diskreter Stauzonen vermieden werden.These disadvantages are overcome with the device according to the invention avoided because now the nozzle openings for themselves are arranged in groups and within these groups, their application area compared to the usual total application area is small, already sufficient Swirling and as well as a rotational movement in the flow occurs, so that point overheating in the vicinity discrete congestion zones can be avoided.
Das neue Beblasungssystem eignet sich also besonders für die konvektive Wärmeübertragung an Stirnflächen von Bandbunden, deren Anordnung zum Beblasungssystem nicht von vornherein festliegt und von Chargierung zu Chargierung wechseln kann. Das neue Beblasungssystem besitzt also die Vorteile der aus der Deutschen Patentschrift 35 03 089 bekannten Vorrichtung, ohne jedoch die Nachteile, nämlich die Notwendigkeit einer gewissen Zentrierung des Beblasungssystems auf die zu erwärmenden Coilstirnflächen in Kauf nehmen zu müssen.The new blowing system is therefore particularly suitable for convective heat transfer on the end faces of coils, their arrangement to the blowing system not from is determined in advance and from batch to batch can change. So the new blowing system has it Advantages of from German patent specification 35 03 089 known device, but without the disadvantages, namely the need for some centering of the blowing system on the coil end faces to be heated in To have to buy.
Ein weiteres, äußerst vorteilhaftes Anwendungsgebiet für die Vorrichtung nach der Erfindung ist die Erzeugung eines hohen Wärmeübergangs an Kleinteilen, wie z. B. Kugellagerringen, die auf einer Fläche, also in einer im wesentlichen ebenen Lage mit einem Fluid, z. B. einem Abkühlgas, zu beaufschlagen sind. Bei den erwähnten Kugellagerringen ergibt sich durch die in ihrer Richtung ständig wechselnden Schrägstrahlen eine äußerst gleichmäßige Beaufschlagung sowohl der inneren als auch der äußeren Ringmantelflächen, so daß sich eine Beblasungseinrichtung nach der Erfindung durchaus auch zum Gasstrahlhärten von Kugellagerringen anbietet. Eine derartige Vorrichtung hat den Vorteil, daß an die besondere Orientierung der Kugellagerringe zum Düsensystem keinerlei Anforderungen gestellt werden. Es genügt z. B., die Ringe auf einen entsprechenden Rollengang unter der Beblasungseinrichtung vorbei zu bewegen. Another extremely beneficial application for the device according to the invention is the production of a high heat transfer to small parts, such as B. ball bearing rings, that on one surface, essentially one flat layer with a fluid, e.g. B. a cooling gas, to be charged. With the mentioned bearing rings arises from the constantly changing direction Oblique blasting an extremely even exposure both the inner and the outer ring surface, so that a blowing device after the Invention for gas jet hardening of ball bearing rings offering. Such a device has the Advantage of the special orientation of the ball bearing rings no requirements were placed on the nozzle system become. It is sufficient for. B., the rings on an appropriate Roll under the blowing device past move.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispieles unter Bezugnahme auf schematische Zeichnungen näher erläutert. Es zeigt
-
Figur 1 - eine Draufsicht auf den Düsenboden mit Blickrichtung von der zu beaufschlagenden Fläche,
-
Figur 2 - einen Schnitt durch den Düsenboden und die zugehörigen Strömungsleiteinrichtungen in einer Ebene senkrecht zum Düsenboden.
- Figure 1
- a plan view of the nozzle bottom with a view from the surface to be acted upon,
- Figure 2
- a section through the nozzle bottom and the associated flow control devices in a plane perpendicular to the nozzle bottom.
In der beispielhaft dargestellten Ausführung sind die als Bohrungen ausgeführten vier
kreisrunden Düsenöffnungen 1, 2, 3, 4 zu einer Düsenöffnungsgruppe 5 zusammengefasst.
Dabei haben die benachbarten Düsenöffnungen 1-4 einer Gruppe 5 voneinander einen
geringeren Abstand als von der jeweils nächstliegenden Düsenöffnung 1-4 einer
benachbarten Gruppe.In the exemplary embodiment shown, the four are designed as bores
Der Düsenboden 6 ist ein planes Blech. Mehrere solcher Gruppen 5 von Düsenöffnungen 1
bis 4 bilden die Gesamtheit der Düsenöffnungen im Düsenboden. Auf der Abströmseite sind
Einrichtungen 7 zur Ablenkung des Düsenstrahls 8 angeordnet, mit welchen der Düsenstrahl
im beispielhaft dargestellten Fall um 45° aus der Vertikalen 9 abgelenkt wird. Die
Ablenkeinrichtungen 7 bestehen aus, im Querschnitt des abgelenkten Düsenstrahls
betrachtet, U-förmig gebogenen Blechen, d.h. kanalartig ausgeführten Führungselementen,
die mit der durch Schrägabschnitt entstandenen Fügefläche 10 auf den die Düsenöffnungen
enthaltenden planen Düsenboden 6 aufgesetzt sind. Durch entsprechenden Schrägabschnitt
entsteht der gewünschte Ablenkwinkel zwischen 15° und 45°, wie im beispielhaft
dargestellten Fall, wie erwähnt, 45°.The
Die Projektion der abgelenkten Düsenstrahlen bildet beispielhaft und erfindungsgemäß im dargestellten Fall für zwei benachbarte Düsenöffnungen den Winkel 360°, dividiert durch die Anzahl vier der Düsenöffnungen gleich 90°. The projection of the deflected nozzle jets forms an example and according to the invention in case shown for two adjacent nozzle openings divided by 360 ° the number four of the nozzle openings equal 90 °.
Bei der dargestellten Ausführungsform befinden sich die Einrichtungen 7 zur
Düsenstrahlablenkung auf der Abströmseite der Düsenöffnungen 1 bis 4. Als Alternative
hierzu können sie auch auf der Zuströmseite angeordnet sein.In the illustrated embodiment, the
Der Abstand zwischen den einander nächstliegenden Düsenöffnungen 1-4 benachbarter
Düsenöffnungsgruppen 5 beträgt mindestens das 1,5-fache des geringsten Abstandes
zwischen den nächstliegenden Düsenöffnungen 1-4 in einer Gruppe 5.The distance between the closest nozzle openings 1-4 adjacent
Schließlich macht die geometrisch freie Düsenfläche in der Projektion auf den ebenen
Düsenboden 6 oder die Bezugsebene des Düsenbodens 6 zwischen 2 % und 10 % der
zugehörigen Gesamtfläche des Düsenbodens 6 oder dessen Bezugsebene aus.Finally, the geometrically free nozzle surface in the projection makes it
Claims (9)
- A device for the uniform feeding or application of a heat treatment gas onto a plane surface of a workpiece, in particular the facing side of a web coil, comprising a plane nozzle floor provided with nozzle openings, wherein:characterised in that the projection of the diverted nozzle jet onto the plane of the nozzle floor (6) forms an angle (11) with the adjacent nozzle opening (1-4) in the same group (5) of nozzle openings, said angles (11) for all the nozzle openings (1-4) of one group (5) adding up to 360° in total.a) the nozzle openings (1-4) in the substantially plane nozzle floor (6) are combined to form groups;b) adjacent nozzle openings (1-4) of a group (5) have a smaller distance from each other than from the nearest respective nozzle opening (1-4) of an adjacent group (5);c) a device (7) for diverting the nozzle jets (8) in one direction is provided at each nozzle opening (1-4) of a group (5), said direction forming an angle with the perpendicular on the plane nozzle floor (6), or in the case of a substantially plane nozzle floor (6), with its plane reference surface,
- The device as set forth in claim 1, characterised in that the arrangement of the nozzle openings (1-4) in the groups (5) is point-symmetrical with respect to the mid-point of the group.
- The device as set forth in at least one of claims 1 to 2, characterised in that the nozzle jets (8) are diverted from the direction perpendicular to the nozzle floor (6) by appropriately inclining channel-like guiding elements (metal sheets 7).
- The device as set forth in at least one of claims 1 to 3, characterised in that the devices (7) for diverting the nozzle jet are arranged on the outflow side of the nozzle openings (1-4) introduced into the plane nozzle floor (6).
- The device as set forth in at least one of claims 1 to 4, characterised in that the devices (7) for diverting the nozzle jet are arranged on the inflow side of the nozzle openings (1-4) introduced into the plane nozzle floor (6).
- The device as set forth in at least one of claims 1 to 5, characterised in that the diverting angle of the nozzle jets (8) is between 15° and 45° from the vertical on the plane nozzle floor (6).
- The device as set forth in at least one of claims 1 to 6, characterised in that the nozzle openings (1-4) are embodied having a circular cross-section.
- The device as set forth in at least one of claims 1 to 7, characterised in that the distance between the nearest nozzle openings (1-4) of adjacent groups (5) of nozzle openings is at least one and a half times the smallest distance between the nearest nozzle openings (1-4) in one group (5).
- The device as set forth in at least one of claims 1 to 8, characterised in that the geometrically free nozzle surface, in its projection onto the plane nozzle floor (6) or the reference plane of the nozzle floor (6), constitutes between 2% and 10% of the corresponding overall surface of the nozzle floor (6) or its reference plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19650965 | 1996-12-07 | ||
| DE19650965A DE19650965C1 (en) | 1996-12-07 | 1996-12-07 | Device for uniformly applying a fluid to a flat surface of a workpiece |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0846930A2 EP0846930A2 (en) | 1998-06-10 |
| EP0846930A3 EP0846930A3 (en) | 1999-04-14 |
| EP0846930B1 true EP0846930B1 (en) | 2003-03-19 |
Family
ID=7814028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97121603A Expired - Lifetime EP0846930B1 (en) | 1996-12-07 | 1997-12-08 | Device for uniform feeding of a heat treatment gas onto the surface of a workpiece |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0846930B1 (en) |
| AT (1) | ATE235035T1 (en) |
| DE (2) | DE19650965C1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1490524B2 (en) † | 2002-03-15 | 2009-01-21 | Schwartz, Eva | Method and device for convective heat transfer between a heat transfer medium and the surface of a workpiece |
| DE10212234A1 (en) * | 2002-03-19 | 2003-10-09 | Junker Gmbh O | Device for uniformly loading a flat surface of a workpiece with a heated gas |
| PL242460B1 (en) * | 2020-12-31 | 2023-02-27 | Seco/Warwick Spolka Akcyjna | Modular device for blowing gas onto the surface of heat-treated charge |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE254236C (en) * | 1910-05-24 | |||
| DE2235510C2 (en) * | 1972-07-20 | 1982-12-23 | Wedag Westfalia Dinnendahl Gröppel AG, 4630 Bochum | Grate plate for clinker cooler |
| US3887135A (en) * | 1973-11-15 | 1975-06-03 | Shigetake Tamai | Gas-atomizing nozzle by spirally rotating gas stream |
| DE2454202A1 (en) * | 1974-11-15 | 1976-05-26 | Kloeckner Humboldt Deutz Ag | Cooler grate plate, esp. for cooling cement clinker - made of metal box-frame contg. refractory layer and air holes |
| US4155701A (en) * | 1977-09-26 | 1979-05-22 | The Trane Company | Variable capacity burner assembly |
| US4261517A (en) * | 1979-11-23 | 1981-04-14 | General Electric Company | Atomizing air metering nozzle |
| DE3503089A1 (en) * | 1985-01-30 | 1986-07-31 | Carl Prof. Dr.-Ing. 5100 Aachen Kramer | DEVICE FOR EVENLY APPLYING A TARGET SURFACE WITH A GAS |
-
1996
- 1996-12-07 DE DE19650965A patent/DE19650965C1/en not_active Expired - Fee Related
-
1997
- 1997-12-08 AT AT97121603T patent/ATE235035T1/en active
- 1997-12-08 DE DE59709558T patent/DE59709558D1/en not_active Expired - Lifetime
- 1997-12-08 EP EP97121603A patent/EP0846930B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59709558D1 (en) | 2003-04-24 |
| ATE235035T1 (en) | 2003-04-15 |
| EP0846930A3 (en) | 1999-04-14 |
| EP0846930A2 (en) | 1998-06-10 |
| DE19650965C1 (en) | 1998-08-13 |
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