EP0971792B1 - Düse, verwendung einer düse und verfahren zur eindüsung eines ersten fluids in ein zweites fluid - Google Patents
Düse, verwendung einer düse und verfahren zur eindüsung eines ersten fluids in ein zweites fluid Download PDFInfo
- Publication number
- EP0971792B1 EP0971792B1 EP98925398A EP98925398A EP0971792B1 EP 0971792 B1 EP0971792 B1 EP 0971792B1 EP 98925398 A EP98925398 A EP 98925398A EP 98925398 A EP98925398 A EP 98925398A EP 0971792 B1 EP0971792 B1 EP 0971792B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- fluid
- duct
- channel
- inlet
- 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
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
- B05B1/34—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
Definitions
- the invention relates to a nozzle for injecting a first Fluids in a second fluid, use of such Nozzle and a method for injecting a first fluid into a second fluid.
- a return injection nozzle is described in DE 32 35 080 A1, with the two opposite liquid supply lines tangential in a circular cylindrical Swirl space.
- the swirl chamber is on the one hand an injection channel and on the other hand, a return hole connected.
- the return injector is special for atomizing liquid fuel in Gas turbine combustors suitable. This will atomize achieves fuel tangentially into the swirl chamber flows in and is combined into a main stream, whereby by a circular guide in the swirl chamber the main flow a swirl is given that get in the injection channel remains so that the fuel jet exits the fuel fanned out conically from the injection channel. on the other hand fuel is returned via the return hole. While maintaining a constant fuel flow to the return injector, the amount of injected Fuel controlled by the amount of recycled Fuel is discontinued. An atomizer with backflow control also emerges from DD 22 076.
- DE 196 08 349 A1 describes a pressure atomizing nozzle, in particular for a gas turbine burner.
- This nozzle has a separate turbulence or swirl chamber.
- the Swirl chamber stands over an orifice with an outside space in connection in which the liquid to be atomized flows.
- the atomizer is to be atomized via a first feed channel Liquid can be supplied to the swirl chamber.
- the first feed channel is realized through a narrow hole that creates turbulence acts. Hence the first feed channel too referred to as turbulence atomizer stage.
- About a second Feed channel is also under liquid to be atomized Pressure and swirl can be supplied to the swirl chamber.
- the nozzle is different Customizable operating conditions. In particular is when used in a gas turbine burner to the nominal load conditions adapted nozzle pre-pressure can be generated. Depending on The load is the spray cone angle and thus the degree of atomization customizable.
- DE 44 40 681 C2 shows a spray nozzle, in particular for Spraying water in fire protection systems. Similar to in DE 196 08 349 A1 is also a vortex chamber in this document provided in which the water to be sprayed in front collecting the exit.
- U.S. Patent 5,035,364 shows a device for prevention conglomerate formation of those flowing in a fluid stream Solid particles. To do this, the fluid flow is through laterally merging injection channels fluid mixed so that a vortex formation in the main stream results.
- the object of the invention is to provide a nozzle for injection specify first fluid in a second fluid. Further tasks are to use such a nozzle as well Method for injecting a first fluid into a second Specify fluid.
- a center line of a channel is to be understood as the line resulting from the totality of the focal points of each cross-sectional area of the channel results.
- a tangent to the second center line at the mouth is the tangent to the second center line in that Point at which the second center line from the muzzle is cut.
- the mouth area is the area that through the edge of the wall of the second ending at the mouth Channel is included.
- the expression "connected in parallel in terms of flow technology" is in Analogy to see an electrical circuit.
- the first Channel corresponds to one electrical line
- the second one electrical line corresponding to the second channel up to an interconnection of the two lines connected in parallel is.
- the first and second channels serve before the Mouth of the leadership of separate partial streams of the first Fluids that are pooled at the mouth. These partial flows correspond to electrical currents through the two lines before interconnection.
- the nozzle body is preferably directed along a nozzle axis, the first channel running along the nozzle axis.
- the center line of the first channel coincides with the Nozzle axis together. So that is a flowing in the first channel Fluid flow is a straight flow with a high momentum in the direction of flow.
- the first channel further preferably has a main cross-sectional area and the second channel is a minor cross-sectional area that is smaller than the main cross-sectional area.
- a lower mass flow flows in the second channel of the first fluid than in the first channel.
- the mouth preferably has a largest mouth diameter, the first channel being located downstream of the mouth extends at least such a length that a partial flow of the first fluid in the first channel with a partial flow the first fluid from the second channel into a single one, main stream that does not split when exiting the nozzle united, but at most over a length over which a Twist of the main stream is still preserved, especially over a length of three to four times the largest mouth diameter.
- the first channel more preferably has an approximately circular shape Cross section on, with the second channel essentially opens tangentially into the first channel.
- Tangential means that it is in one that divides the mouth, perpendicular to the first Centerline level is a common tangent to the surface of the first and second channels. A such a tangential confluence causes a particularly large one Swirl transmission to a partial flow flowing in the first channel of the first fluid.
- a third channel preferably opens into the first channel at an additional mouth, the additional mouth with respect to the Center line of the first channel opposite the mouth.
- the direction of flow is one in the third channel flowing partial flow of the first fluid of the flow direction a partial flow of the first flowing in the second channel Fluids roughly opposite.
- Another so arranged Channel increases the twist transfer to one in the first channel flowing fluid flow and leads to a more even distribution of the first fluid over the perimeter of the outlet of the first fluid from the nozzle forming spray cone.
- Each channel is further preferred as a circularly symmetrical bore executed.
- the nozzle body preferably has an outer surface on, which is at least partially designed as a thread is. A nozzle body designed in this way enables a simple one Installation of the nozzle e.g. into a burner by simple Screw in the nozzle body.
- the nozzle is preferably used to inject fuel in combustion air in a burner, especially in a Premix burner of a gas turbine used. It is first fluid fuel and the second fluid combustion air.
- a premix burner is particularly characterized by that fuel and combustion air are mixed first and only then are they incinerated. The principle of one Premix burner is described in the article "Progress in Nox and CO Emission Reduction of Gas Turbines ", H. Maghon, P. Berenbrink, H. Termühlen and G. Gartner, ASME / IEEE Power Generations Conference, Boston 1990, whereupon explicitly Reference is made.
- the first partial stream and the second are preferred Partial flow at an angle between 5 ° and 90 °, in particular between 35 ° and 55 °.
- the first fluid is preferably fuel and the second fluid Combustion air, the fuel in a nozzle of a Burner, in particular a premix burner of a gas turbine, is guided and injected into the combustion air.
- Figure 1 is a side view of a in an air duct 12 of a premix burner, not shown built-in nozzle 1 shown.
- the air duct 12 is not shown to scale.
- a nozzle body 2 is along directed an axis 2a and consists of a cylindrical Head part 2b with an end face 2e and a likewise cylindrical, screw part 2c with the same length External thread 7, with which the nozzle 1 in a wall 12b of the air duct 12 is screwed in and an end face 2d.
- the Screw part 2c has approximately 2/3 of the diameter of the Head part 2b.
- the screw part 2c connects to one Foot surface 2f of the head part 2b to the head part 2b.
- the thread 7 faces each other with respect to axis 2a Slots 7a, 7b.
- the slots 7a, 7b extend each parallel to the axis 2a from the end face 2d of the Screw part 2c up to about 4/5 of the length of the screw part 2c.
- the head part 2b has a hexagonal cross section, hereinafter referred to as hexagon socket 6 along the axis 2a with about half the diameter of the Diameter of the head part 2b.
- the hexagon socket 6 extends about 2/3 of the length of the Head part 2b and serves to engage a screw-in tool the nozzle 1 in the wall 12b of the air duct 12.
- An the hexagon socket 6 closes in a circular cross section first channel 3 along axis 2a with a diameter 3b of approximately 1/8 of the diameter of the head part 2b on.
- the first channel 3 extends with this diameter 3b into the screw part 2c and then tapers over a short distance by about 2/3 to one Diameter 3c.
- the first channel 3 leads through the screw part 2c along the axis 2a to the end face 2d of the Screw part 2c.
- the first channel 3 has a first center line 3a, which coincides with the axis 2a.
- cross-sectionally circular channel 4 extends at an angle ⁇ (see FIG.
- the second channel 4 is directed along a second center line 4a.
- the second Center line 4a has a tangent 4b at the mouth, which coincides with the second center line 4a, since the second center line 4a is a straight line.
- the tangent 4b is from the first center line 3a with the distance a (see FIG. 2) spaced.
- the third channel 4 ' is with respect to axis 2a arranged symmetrically to the second channel 4.
- the third center line 4a ' has a tangent 4b' at the additional mouth 5 ' on, which coincides with the third center line 4a 'and to first center line 3a spaced apart by the distance a (see FIG. 2) is.
- the nozzle 1 opens into a perpendicular to the axis 2a directional air duct 12 with an air duct width 12a.
- Burners e.g. in a premix burner of a gas turbine, flows through fuel 10 from the end face 2d of the screw part 2c the first channel 3 to the front side 2e of the Headboard 2b. There the fuel 10 emerges as a fuel jet 10d in the air duct 12, in the combustion air 11 approximately perpendicular to the direction of the fuel jet flows. Partial streams 10b of the fuel 10 are on the Slots 7a and 7b of the second channel 4 and the third channel, respectively 4 'supplied. At the mouth 5 or at the additional mouth 5 ' this partial stream 10b enters the first channel 3, in the Partial stream 10a of fuel 10 flows eccentrically. The partial streams 10b and 10a become a main stream 10c united.
- the main flow 10c imprinted a twist.
- the twisted, united Main stream 10c emerges from the nozzle as a fuel jet 10d 1 and fans out by the swirl, but still has such a large impulse in the main flow direction that the fuel jet 10d over almost the entire width 12a of the Air duct 12 extends. This results in good mixing of fuel 10 and combustion air 11 almost the entire air duct width 12a.
- the screw part 2c is opposite the air duct 12 on the foot side 2f of the head part 2b sealed.
- FIG. 2 shows a cross section through the nozzle 1 from FIG. 1 shown on a scale twice as large.
- the second channel flows tangentially into the first channel 3 Channel 4 and the third channel 4 '.
- the second center line 4a of the second channel 4 has a tangent 4b at the mouth 5 and the third center line 4a 'of the third channel 4' on the Mouth 5 'a tangent 4b', each with the center lines 4a and 4a 'coincide, since these are straight lines.
- the Tangents 4b and 4b ' are at a distance a from the center line 3a of the channel 3 spaced.
- the first channel 3 is the partial flow 10a of the fuel flowing in the first channel 3 10 through each of the second channel 4 and the third Channel 4 ′ incoming partial flows 10b of the fuel 10 a swirl issued.
- the pulse of the partial flow 10a of fuel 10 in the first channel 3 along the center line 3a essentially retained.
- the combined main stream 10c is still guided over a length 5b of the first channel 3 a split into two partial jets when the fuel emerges 10 to avoid from the first channel 3.
- the main stream 10c combined in channel 3 as a fuel jet 10d far into the combustion air 11, so that the Fuel jet 10d over almost the entire width 12a of the Air duct extends. Combustion air can therefore flow over a large distance 11 are mixed with fuel 10.
- the one Main flow 10c given swirl leads to a conical Fanning out the fuel jet emerging from the nozzle 1 10d and thus to a fine distribution of fuel 10th
- FIG. 3 shows a further exemplary embodiment of a nozzle 1 in a side view.
- the nozzle 1 is apart from another Fuel supply to the channels 4 and 4 'identical to that Nozzle 1 from FIG. 1.
- Two blind holes parallel to the first channel 3 9 and 9 'in the screw part 2c extend in each case from the end face 2d of the screw part 2c almost the entire length of the screw part 2c, the blind hole 9 the second channel 4 and the blind hole 9 ' intersects the third channel 4 '.
- the channels 4 and 4 ' Fuel 10 is supplied via the blind hole 9 or 9 '.
Landscapes
- Combustion Of Fluid Fuel (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
- Nozzles (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
- FIG 1
- eine Seitenansicht einer Düse im Luftkanal eines Vormischbrenners,
- FIG 2
- einen Querschnitt durch die Düse aus Figur 1 und
- FIG 3
- eine Seitenansicht einer weiteren Ausgestaltung einer Düse.
Claims (13)
- Düse (1) zur Eindüsung eines ersten Fluids (10) in ein zweites Fluid (11), mit einem Düsenkörper (2), in dem das erste Fluid (10) führbar ist,
dadurch gekennzeichnet, daß in dem Düsenkörper (2) ein entlang einer ersten Mittellinie (3a) gerichteter erster Kanal (3) vorgesehen ist, in den ein entlang einer zweiten Mittellinie (4a) gerichteter zweiter Kanal (4) an einer Mündung (5) mündet, wobeider erste Kanal (3) und der zweite Kanal (4) vor der Mündung (5) strömungstechnisch parallel geschaltet sind;die zweite Mittellinie (4a) an der Mündung (5) eine Tangente (4b) aufweist, die von der ersten Mittellinie (3a) beabstandet ist;der erste Kanal (3) so ausgebildet ist, daß ein entlang der ersten Mittellinie (3a) gerichteter Impuls des im ersten Kanal (3) führbaren ersten Fluides (10) bis zu einem Austritt aus dem Düsenkörper (2) im wesentlichen erhalten bleibt. - Düse (1) nach Anspruch 1,
dadurch gekennzeichnet, daß der Düsenkörper (2) entlang einer Düsenachse (2a) gerichtet ist, wobei der erste Kanal (3) entlang der Düsenachse (2a) führt. - Düse (1) nach Anspruch 2,
dadurch gekennzeichnet, daß der erste Kanal (3) an der Mündung (5) eine Hauptquerschnittsfläche und der zweite Kanal (4) an der Mündung (5) eine Nebenquerschnittsfläche aufweist, die kleiner als die Hauptquerschnittsfläche ist. - Düse (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Mündung (5) einen größten Mündungsdurchmesser (5a) aufweist, wobei sich der erste Kanal (3) stromab der Mündung (5) über mindestens eine solche Länge (5b) erstreckt, daß sich ein Teilstrom (10a) des ersten Fluids (10) im ersten Kanal (3) mit einem Teilstrom (10b) des ersten Fluids (10) aus dem zweiten Kanal (4) zu einem einzigen, sich beim Austritt aus der Düse nicht aufspaltenden, Hauptstrom (10c) vereinigt, höchstens aber über eine Länge (5b), über die ein Drall des Hauptstromes (10c) noch erhalten bleibt, insbesondere über eine Länge (5b) von dem drei- bis vierfachen des größten Mündungsdurchmessers (5a). - Düse (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der mit dem zweiten Kanal (4) parallel geschaltete erste Kanal (3) an der Mündung (5) einen Winkel (α) zwischen 5 und 90°, insbesondere zwischen 35° und 55°, mit dem zweiten Kanal (4) einschließt. - Düse (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der erste Kanal (3) einen ungefähr kreisförmigen Querschnitt aufweist, wobei der zweite Kanal (4) im wesentlichen tangential in den ersten Kanal (3) mündet. - Düse (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß ein dritter Kanal (4') in den ersten Kanal (3) an einer Zusatzmündung (5') mündet, wobei die Zusatzmündung (5') bezüglich der Mittellinie (3a) des ersten Kanals (3) der Mündung (5) gegenüberliegt. - Düse (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß jeder Kanal (3, 4, 4') als kreissymmetrische Bohrung ausgeführt ist. - Düse (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Düsenkörper (2) eine Außenfläche aufweist, die zumindest teilweise als ein Gewinde (7) ausgebildet ist. - Verwendung einer Düse (1) nach einem der vorhergehenden Ansprüche zur Eindüsung von Brennstoff (10) in Verbrennungsluft (11) in einem Brenner, insbesondere in einem Vormischbrenner einer Gasturbine.
- Verfahren zur Eindüsung eines ersten Fluids (10) in ein zweites Fluid (11),
dadurch gekennzeichnet, daß das erste Fluid (10) in einem ersten Teilstrom (10a) entlang einer ersten Mittellinie (3a) und in einem zweiten Teilstrom (10b) entlang einer zweiten Mittellinie (4a) geführt wird, wobei der zweite Teilstrom (10b) mit dem ersten Teilstrom (10a) zu einem Hauptstrom (10c) so vereinigt wird, daß dem ersten Teilstrom (10a) durch die Vereinigung ein Drall aufgeprägt wird und wobei ein Impuls des ersten Teilstroms (10a) entlang der ersten Mittellinie bis zur Eindüsung in das zweite Fluid (11) im wesentlichen beibehalten wird. - Verfahren nach Anspruch 11,
dadurch gekennzeichnet, daß der zweite Teilstrom (10b) und der erste Teilstrom (10a) unter einem Winkel (α) zwischen 5° und 90°, insbesondere zwischen 35° und 55°, zusammengeführt werden. - Verfahren nach Anspruch 11 oder 12,
dadurch gekennzeichnet, daß das erste Fluid (10) Brennstoff (10) und das zweite Fluid (11) Verbrennungsluft (11) ist, wobei der Brennstoff (10) in einer Düse (1) eines Brenners, insbesondere eines Vormischbrenners einer Gasturbine, geführt und in die Verbrennungsluft (11) eingedüst wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19713377A DE19713377A1 (de) | 1997-04-01 | 1997-04-01 | Düse, Verwendung einer Düse und Verfahren zur Eindüsung eines ersten Fluids in ein zweites Fluid |
DE19713377 | 1997-04-01 | ||
PCT/DE1998/000778 WO1998043743A2 (de) | 1997-04-01 | 1998-03-16 | Düse, verwendung einer düse und verfahren zur eindüsung eines ersten fluids in ein zweites fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0971792A2 EP0971792A2 (de) | 2000-01-19 |
EP0971792B1 true EP0971792B1 (de) | 2002-11-06 |
Family
ID=7825106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98925398A Expired - Lifetime EP0971792B1 (de) | 1997-04-01 | 1998-03-16 | Düse, verwendung einer düse und verfahren zur eindüsung eines ersten fluids in ein zweites fluid |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0971792B1 (de) |
JP (1) | JP2001521438A (de) |
DE (2) | DE19713377A1 (de) |
WO (1) | WO1998043743A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020002684A1 (de) | 2020-05-05 | 2021-11-11 | Felix Schiefer | Einspritzdüse und Vorrichtung zur Beladung eines Kraftstoffes mit Gas |
DE202020001914U1 (de) | 2020-05-05 | 2020-06-15 | Hartmut Schiefer | Einspritzdüse und Vorrichtung zur Beladung eines Kraftstoffes mit Gas |
DE102020004130A1 (de) | 2020-07-09 | 2022-01-13 | Felix Schiefer | Kraftstoffeinspritzung im Verbrennungsmotor |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR808111A (fr) * | 1936-07-15 | 1937-01-29 | Phillips & Pain Ets | Jet pulvérisateur |
US2110409A (en) * | 1937-05-19 | 1938-03-08 | George W Veach | Spray nozzle |
US2428748A (en) * | 1944-06-22 | 1947-10-07 | Star Sprinkler Corp | Nozzle |
GB858948A (en) * | 1957-09-17 | 1961-01-18 | Dowty Fuel Syst Ltd | Improvements in liquid spray nozzles |
DE7112090U (de) * | 1971-03-30 | 1971-07-15 | Rost G & Soehne | Brausekopf |
DE2733102A1 (de) * | 1977-07-22 | 1979-02-01 | Bayer Ag | Verfahren und vorrichtung zum zerstaeuben von fluessigkeiten |
DE3235080A1 (de) * | 1982-09-22 | 1984-03-22 | Kraftwerk Union AG, 4330 Mülheim | Ruecklaufeinspritzduese fuer die zerstaeubung von fluessigkeiten |
US5035364A (en) * | 1989-10-10 | 1991-07-30 | Terronics Development Corporation | Deagglomerator and method for deagglomerating particulate material |
DE4440681C2 (de) * | 1994-11-15 | 1996-10-17 | Awab Umformtechn Gmbh & Co Kg | Sprühdüse, insbesondere zum Versprühen von Wasser in Brandschutzanlagen |
US5590837A (en) * | 1995-02-28 | 1997-01-07 | Calmar Inc. | Sprayer having variable spray pattern |
DE19608349A1 (de) * | 1996-03-05 | 1997-09-11 | Abb Research Ltd | Druckzerstäuberdüse |
-
1997
- 1997-04-01 DE DE19713377A patent/DE19713377A1/de not_active Withdrawn
-
1998
- 1998-03-16 JP JP54105598A patent/JP2001521438A/ja not_active Abandoned
- 1998-03-16 EP EP98925398A patent/EP0971792B1/de not_active Expired - Lifetime
- 1998-03-16 DE DE59806190T patent/DE59806190D1/de not_active Expired - Fee Related
- 1998-03-16 WO PCT/DE1998/000778 patent/WO1998043743A2/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO1998043743A3 (de) | 1998-12-30 |
EP0971792A2 (de) | 2000-01-19 |
DE59806190D1 (de) | 2002-12-12 |
JP2001521438A (ja) | 2001-11-06 |
DE19713377A1 (de) | 1998-10-15 |
WO1998043743A2 (de) | 1998-10-08 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
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