EP0793780B1 - Dispositif supersonique - Google Patents

Dispositif supersonique Download PDF

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Publication number
EP0793780B1
EP0793780B1 EP95929721A EP95929721A EP0793780B1 EP 0793780 B1 EP0793780 B1 EP 0793780B1 EP 95929721 A EP95929721 A EP 95929721A EP 95929721 A EP95929721 A EP 95929721A EP 0793780 B1 EP0793780 B1 EP 0793780B1
Authority
EP
European Patent Office
Prior art keywords
drive nozzle
supersonic device
mixer
supersonic
nozzle
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
Application number
EP95929721A
Other languages
German (de)
English (en)
Other versions
EP0793780A1 (fr
Inventor
Alfred E. Beylich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0793780A1 publication Critical patent/EP0793780A1/fr
Application granted granted Critical
Publication of EP0793780B1 publication Critical patent/EP0793780B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type

Definitions

  • the invention relates to a supersonic device with an elongate tubular Mixer and diffuser housing, in which a first axially and in series with one Displacement body provided second propelling nozzle is arranged, with both propelling nozzles in each are arranged in a cylindrical region of the mixer and diffuser housing.
  • a supersonic device of this type is known from GB-A-3025525
  • De 30 25 525 Al is an ejector device known, made of at least two of a corresponding number axially one on the other following ejectors of increasing size formed within a common elongated housing known, which according to the modular system of several in Sections adjoining one another in the longitudinal direction and combinable with one another as desired consists of at most one transverse wall.
  • This known from Scripture Ejector device is used, for example, to generate overpressure and underpressure during mechanical movement of sheets of paper used in print shops, so only for production of very low pressures, i.e. very small pressure ratios, and very small ones Flows.
  • the conversion of pressure into kninetic energy taking place in the nozzles is small and not comparable to high-performance supersonic nozzles, the big one Can generate pressure conditions.
  • a classic supersonic device with two driving nozzles is from the dissertation H.R. Solver the Technical University of Darmstadt, November 8, 1965.
  • the one from this writing resulting supersonic device has the design of a conventional two stage supersonic, which consists of two individual stages with central primary nozzles and cylindrical mixing chambers. Connects to the mixing chamber of the second stage the usual subsonic cone diffuser.
  • the delay from the first stage emerging flow of the two-stage supersonic ejector is in a subsonic double-cone diffuser made of the constructive connection of the individual stages represents.
  • the two-stage supersonic ejector is still burdened with the disadvantage that in first supersonic diffuser delayed lossy first and then in the subsequent part is accelerated again.
  • the invention has for its object to provide a supersonic device in which constructively simple means a significant increase in performance in relation to driving medium to be used is achieved.
  • Both are in the supersonic device according to the invention
  • Driving nozzles each in a cylindrical area of the mixer and diffuser housing arranged.
  • the second propellant is one conical displacement body in the form of a supersonic cone or wedge connected upstream, the tip or cutting edge in the conically tapered first mixing zone of the diffuser protrudes so far that it still part of the Core jet of the first propellant nozzle reached.
  • tandem emitter With the integrated form of the tandem emitter according to the invention with supersonic cone or Turkey diffuser works considerably less loss than the classic mixer with impact diffuser tube. Furthermore, the overall length of the integrated tandem radiator smaller than the known ones, including the two-stage Systems. They also achieve conical DC mixing chambers significantly better efficiencies than the known cylindrical ones Mixing chambers for high-performance jet pumps.
  • the dimensions are at least 0.8 times smaller second driving nozzle is in the first transonic area of the Arranged in tandem.
  • This cylindrical part extends extends beyond the nozzle end of the second drive nozzle, So far that the second mixing zone just does not touch becomes.
  • This cylindrical part of the diffuser housing closes then the conically tapering part of the mixing zone 2 followed by the second transorsal area finally the subsonic diffuser connects.
  • the second propellant nozzle is by at least three, preferably for securely fixing the spotlight with a total of six struts attached to the housing.
  • One of the struts is as Steam supply line trained.
  • the housing 20 has a first cylindrical part 21 for load current supply, on it subsequent second cylindrical part 22 in the area of trans-mixing zone, followed by a second Mixer part 24, a shock diffuser 25 and finally one Subsonic diffuser 26 follows.
  • the first driving nozzle 11 is in the first cylindrical part 21 arranged.
  • the supersonic device also has an in Series connected and inside the second cylindrical Part 22 arranged second drive nozzle 12.
  • the blowing nozzle 12 is on struts 15, 16 on the cylindrical part 21 of the housing 20 attached.
  • struts 15 arranged at the head and foot end of the driving nozzle 12, one of which is designed as a propellant supply strut 16, which is connected to the tubular propellant supply 13.
  • the second drive nozzle 12 has the drive nozzle 11 on it inclined end face a conical or wedge-shaped Displacement body 14 with a half angle ⁇ and Total length 1 on.
  • the letter A is the distance between the mouth the second drive nozzle 12 to the outlet mouth of the second Mixing part 24 denotes.
  • Fig. 2 shows in detail the attachment of the second Driving nozzle 12 in the cylindrical part 22 of the mixer and Diffuser housing.
  • the head and foot end of the propellant nozzle 12 struts 15 are arranged, of the one is designed as a propellant supply strut 16 which the tubular propellant supply 13 is connected.
  • the struts at a strut angle ⁇ arranged at right angles in the lower part of the picture.
  • Section A-A shows the cross-sectional area of a strut 15, which is designed and arranged in such a way that the flowing medium as little resistance as possible is opposed.
  • the cross-sectional area spatially formed, in the lower part the areas inclined to the flow are larger and with a more acute angles to each other than the other two Surfaces.
  • the section B-B shows that the circumference of the driving nozzle as a whole three struts are distributed, namely two struts 15 and one Propellant supply strut 16 within the second cylindrical Part 22.
  • FIG. 3 shows the structure of the mixer and diffuser housing 20 as in Fig. 1 in a perspective view.
  • Housing 20 is in the area of the first cylindrical part 21 a propellant nozzle 11 arranged which is rectangular Has outlet cross-section. It is also connected in series a second driving nozzle 12, which is also a rectangular one Has outlet cross-section and has a housing size, which on the narrow sides directly up to the housing wall of the second cylindrical part 22 protrudes.
  • a displacement body 14 On the front side of this rectangular second drive nozzle 12 is a displacement body 14 arranged in the form of a wedge 18 with an angle ⁇ is less than 5 °. The cutting edge of the wedge 18 is there perpendicular to the rectangular outlet cross section of the driving nozzle 11 arranged.
  • the propellant supply 13 is directly through the wall of the housing 20 and the drive nozzle 12 out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Nozzles (AREA)
  • Percussion Or Vibration Massage (AREA)

Claims (14)

  1. Dispositif supersonique, comportant un carter de diffusion et de mélange (20) tubulaire allongé, dans lequel il est agencé, axialement, une première tuyère (11) et, par rapport à celle-ci en série, une seconde tuyère (12) munie d'un corps de déplacement (14), les deux tuyères (11,12) étant agencées dans une zone cylindrique respective (21,22) du carter de diffusion et de mélange (20),
    caractérisé en ce qu'une partie de carter (23), entourant une première zone de mélange (32), s'amincissant de façon conique se raccorde à la partie de carter (21) englobant la première tuyère (11), et en ce que le corps de déplacement (14) relié à la seconde tuyère (12) pénètre dans cette partie de carter conique (23).
  2. Dispositif supersonique selon la revendication 1,
    caractérisé en ce que le corps de déplacement (14) présente une longueur (L) qui correspond à 0,4-0,5 fois la longueur (L) de la première partie de mélange (23).
  3. Dispositif supersonique selon la revendication 2,
    caractérisé en ce que le corps de déplacement (14) est réalisé sous forme de cône et présente un demi-angle α inférieur à 5°.
  4. Dispositif supersonique selon la revendication 2,
    caractérisé en ce que le corps de déplacement (14) est réalisé sous forme de coin (18) et présente un demi-angle a inférieur à 5°.
  5. Dispositif supersonique selon la revendication 4,
    caractérisé en ce que le coin (18) présente une largeur (B) qui correspond au diamètre (D) de la première partie de mélange (23) du carter de diffusion et de mélange (20).
  6. Dispositif supersonique selon la revendication 5,
    caractérisé en ce qu'il est prévu une amenée d'agent propulseur (13) qui peut être raccordée directement à la seconde tuyère (12).
  7. Dispositif supersonique selon une des revendications précitées,
    caractérisé en ce que la première tuyère (11) présente une section transversale de sortie rectangulaire et, de plus, est agencée de sorte que le bord long est perpendiculaire à l'arête du coin (18).
  8. Dispositif supersonique selon la revendication 1,
    caractérisé en ce que la seconde partie de carter cylindrique (22) s'étend dans la zone de la seconde tuyère (12) dans le sens d'écoulement au-delà de l'extrémité de la tuyère jusqu'à 0,4-0,6 de la distance (A) de la seconde tuyère (12) par rapport à la zone de diffusion raccordée à la seconde partie de mélange (24).
  9. Dispositif supersonique selon la revendication 3,
    caractérisé en ce que la seconde tuyère (12) est fixée à la seconde partie cylindrique (22) par au moins trois tirants (15) répartis à la périphérie, un tirant (15) étant réalisé comme tirant (16) d'amenée d'agent propulseur.
  10. Dispositif supersonique selon la revendication 9,
    caractérisé en ce que les tirants (15,16) présentent un profil gênant de façon minimale l'écoulement.
  11. Dispositif supersonique selon la revendication 10,
    caractérisé en ce que les tirants (15,16) sont réalisés, en section transversale, en ayant une forme de losange.
  12. Dispositif supersonique selon la revendication 11,
    caractérisé en ce que les surfaces orientées vers l'écoulement de la section transversale en forme de losange des tirants (15,16) présentent l'une par rapport à l'autre un angle plus petit que les surfaces éloignées de l'écoulement.
  13. Dispositif supersonique selon la revendication 10,
    caractérisé en ce que les tirants (15,16) sont agencés sur la seconde tuyère (12) dans le sens de l'écoulement sous un angle β inférieur à 70°.
  14. Dispositif supersonique selon la revendication 1,
    caractérisé en ce que la seconde tuyère (12), en section transversale, est plus petite d'au moins le facteur 0,8 que la première tuyère (11).
EP95929721A 1994-08-18 1995-08-18 Dispositif supersonique Expired - Lifetime EP0793780B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4430574A DE4430574C2 (de) 1994-08-18 1994-08-18 Strahlpumpe mit zwei Überschalldüsen
DE4430574 1994-08-18
PCT/DE1995/001160 WO1996006285A1 (fr) 1994-08-18 1995-08-18 Dispositif supersonique

Publications (2)

Publication Number Publication Date
EP0793780A1 EP0793780A1 (fr) 1997-09-10
EP0793780B1 true EP0793780B1 (fr) 1999-10-20

Family

ID=6526790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95929721A Expired - Lifetime EP0793780B1 (fr) 1994-08-18 1995-08-18 Dispositif supersonique

Country Status (7)

Country Link
US (1) US5839884A (fr)
EP (1) EP0793780B1 (fr)
JP (1) JP3137986B2 (fr)
AT (1) ATE185880T1 (fr)
AU (1) AU3339895A (fr)
DE (2) DE4430574C2 (fr)
WO (1) WO1996006285A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10050697A1 (de) * 2000-10-13 2002-04-18 Alstom Switzerland Ltd Verfahren und Vorrichtung zur isothermen Kompression eines gasförmigen Mediums
KR100801658B1 (ko) 2006-09-19 2008-02-05 한국에너지기술연구원 연료전지용 양방향 가변노즐 이젝터
CA2560814C (fr) * 2006-09-25 2014-08-26 Transcanada Pipelines Limited Ejecteurs supersoniques en tandem
WO2009008776A1 (fr) * 2007-07-06 2009-01-15 Obschestvo S Ogranichennoi Otvetstvennostju 'akva-Piro-Alyans' Lance d'incendie pour produire un jet d'eau sous forme d'aérosol
RU2348871C1 (ru) * 2007-08-22 2009-03-10 Вадим Иванович Алферов Устройство для сжижения и сепарации газов

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE313020C (fr) *
DE322838C (de) * 1918-05-31 1920-07-09 Aeg Strahlpumpe
DE662250C (de) * 1936-01-21 1938-07-09 Gerhard Fehst Dipl Ing Strahlverdichter, bei welchem dem anzusaugenden Mittel vor dem Zusammentreffen mit dem Treibmittel eine gewisse Geschwindigkeit erteilt ist
US2111266A (en) * 1936-12-28 1938-03-15 Thomas S Hopkins Draft inducer
US2424722A (en) * 1944-09-16 1947-07-29 Youngstown Welding & Engineeri Jet for tanks and the like
US2602398A (en) * 1947-10-17 1952-07-08 Alfred E Nittka Jet booster pump
DE1081182B (de) * 1959-02-14 1960-05-05 Siemens Ag Aus Dampf- und Wasserstrahlsauger bestehendes Strahleraggregat
DE1268307B (de) * 1961-07-01 1968-05-16 Koerting Ag Strahlpumpe
US3371618A (en) * 1966-02-18 1968-03-05 Chambers John Pump
DE3025525A1 (de) * 1980-07-05 1982-01-28 Jürgen 4477 Welver Volkmann Ejektorvorrichtung
US4379679A (en) * 1980-12-01 1983-04-12 United Technologies Corporation Supersonic/supersonic fluid ejector
GB2100351A (en) * 1981-06-17 1982-12-22 British Nuclear Fuels Ltd Steam ejector pumping system
US4487553A (en) * 1983-01-03 1984-12-11 Fumio Nagata Jet pump
DE4400958C1 (de) * 1994-01-14 1995-04-06 Bayerische Motoren Werke Ag Saugstrahlpumpe

Also Published As

Publication number Publication date
DE59507105D1 (de) 1999-11-25
US5839884A (en) 1998-11-24
AU3339895A (en) 1996-03-14
DE4430574A1 (de) 1996-02-22
EP0793780A1 (fr) 1997-09-10
WO1996006285A1 (fr) 1996-02-29
JPH10504368A (ja) 1998-04-28
ATE185880T1 (de) 1999-11-15
DE4430574C2 (de) 1996-07-18
JP3137986B2 (ja) 2001-02-26

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