EP0654124B1 - Pompe a ejecteur - Google Patents

Pompe a ejecteur Download PDF

Info

Publication number
EP0654124B1
EP0654124B1 EP93917750A EP93917750A EP0654124B1 EP 0654124 B1 EP0654124 B1 EP 0654124B1 EP 93917750 A EP93917750 A EP 93917750A EP 93917750 A EP93917750 A EP 93917750A EP 0654124 B1 EP0654124 B1 EP 0654124B1
Authority
EP
European Patent Office
Prior art keywords
flow
substances
ejector
section
flow conduit
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
EP93917750A
Other languages
German (de)
English (en)
Other versions
EP0654124A1 (fr
Inventor
Thilo Volkmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0654124A1 publication Critical patent/EP0654124A1/fr
Application granted granted Critical
Publication of EP0654124B1 publication Critical patent/EP0654124B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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 an ejector according to the Preamble of claim 1, in particular a multi-stage Ejector.
  • Ejector pumps of this type have long been known to Example from FR-A1-2 577 284, and are used for both Establishing vacuum as well as conveying more fluid Substances or mixtures of substances used.
  • this has the advantage that the flow energy of the propellant, which is either gaseous or can be liquid as far as is used until the flow rate under one, with design effort not more economically viable value has dropped.
  • the flow channel in the Cross section is circular and in which the passage gap for the medium to be conveyed on a circumference of the Flow channel cross-section, as is the case with the FR-A1-2 577 284 is the case, the residual energy of the propellant is comparatively can be kept small, especially occurs Ejector pumps with a rectangular, compared to the width comparatively flat cross section of the flow channel, as is the case with the so-called flat channel ejector pumps, the further problem that the residual energy use of Propellant particularly difficult and also with high constructive Effort is pretty unsatisfactory.
  • Such flat channel ejector pumps are from EP-A-O 297 550 known.
  • the object of the invention is more favorable flow conditions in generic ejector pumps to reach in the flow channel.
  • profiles and / or partitions according to the invention act to such, in particular multi-stage ejector, whose Flow channel cross section comparatively flat and is wide, as is particularly the case with the so-called flat channel ejector pumps is the case, both those whose Cross-sectional areas are straight, as well as those whose cross-sectional areas are curved, in particular lie on a circular area, as in DE-A1-34 20 652 is the case.
  • the invention Form profiles or partitions and in the flow channel to arrange; in particular, it is possible in one and the same flow channel differently shaped and different arranged profiles and / or partitions to use, as well it is explained, for example, in the exemplary embodiments is.
  • Profiles are designed as an elongated profile, its cross-section is preferably wing-like is shaped (claim 2). This profile is so inside arranged the flow channel that it with his Longitudinal direction approximately perpendicular to the direction of extension of the flow channel and thus approximately perpendicular to Main flow direction of the fluid (propellant and pumped Substance) extends in the flow channel.
  • Such a profile enables To build flat channel ejector pumps with improved efficiency, which in a particularly economical manner, namely in Extrusion or continuous casting processes can be produced (see Embodiment according to Figure 1).
  • Such profiles are also advantageous for flat channel ejector pumps can be used, which has an annular, directed radially outward Have flow channel as it from the one DE-A1-34 20 652 for a single-stage ejector and from German utility model (utility model application G 92 10 496) for multi-stage ejector pumps (see embodiments according to Figure 3 and Figure 6).
  • the flow guide profiles according to the invention are symmetrical and / or have a wing-like profile and be installed in flat channel ejector pumps with respect to the longitudinal center plane of the flow channel is constructed symmetrically are on both sides of the flat channel opposite suction chambers and passage gaps are equipped for the fluid to be pumped, such as this for example according to the embodiment according to figures 1 and 2 is the case (claim 3).
  • the positioning has proven to be particularly advantageous the profile in accordance with the characteristics of the claim 4 proved.
  • the partition according to the invention (independent claim 7) is as elongated, such as a partition parallel to the flow, which the flow channel cross section in approximately parallel flow sub-channels divided. This measure is both with straight ones as well as with circular ones Cross-sectional areas of the flow channel can be realized (see Figures 2 and 3). It has been shown that such flow guide profiles the turbulence in the mixing zone considerably to reduce. This particularly affects multi-level Ejector pumps, especially those of the flat channel type in particular advantageous.
  • the partitions may be advantageous to use the partitions to design and / or arrange such that the flow channels diverge approximately conically in the direction of flow. This can be achieved in a simple manner according to claim 8 be that the partitions extend in the direction of extension taper the flow channels.
  • An ejector according to the invention can be particularly Manufacture inexpensively if they consist of individual ejector module is constructed according to claim 9. Can too due to the modular design of ejector pumps Capacities by assembling a different number be produced by ejector module without this new tools are necessary.
  • the ejector module can be designed so that they can be used to build flat channel ejector pumps are suitable (see embodiment according to Figure 4), or that by joining several ejector modules a forming a segment of a circle or over formed a full circle extending radial ejector is (see embodiment of Figure 5).
  • the ejector 100 shown in FIG. 1 exists from a housing 5 from two identical, in the extrusion process made of metal, mirror-symmetrical arranged and connected to each other housing parts 5A and 5B.
  • This housing encloses one, itself extending perpendicular to the image plane, in cross section flat, straight and from its propellant inlet side, at nozzle 18 flared to the outlet 22 Flow channel 17.
  • the slit-shaped nozzle 18 is via an inlet chamber 6 and this in turn via a Inlet 15 is charged with a fluid propellant can be liquid, gaseous or vapor.
  • the inlets 16 or the passage gaps 21 may be provided with check valves, such as they are generally known for multi-stage ejector pumps (see FR-A1-2 577 284) and therefore no further explanation need.
  • the flow channel 17 closes (in the direction of flow) to the opposite passage gaps 22 each pump stage a mixing zone 19 and one Diffuser (diffusion zone) 20 on.
  • the mixing zone and the Diffuser zones can at least partially overlap one another.
  • Profiles 1 to 3 are located - in the direction of flow seen - each at the same level with the passage gaps 21 of the associated pump stage, that is associated suction chamber 8 or 9 or 10. The place of the narrowest Cross-section is immediately upstream of the passage gap.
  • the profile 3 acts it is an internally hollow profile
  • the cavity 23 acts as a suction chamber, which on the one hand - through side wall openings 24 with the flow channel 17 and on the other - on the end walls (end walls 26) - via one Inlet 16 with the space containing the substance to be conveyed is fluidly connected.
  • the Suction chambers only in the flow guide profiles in the way to accommodate, as explained using the profile 3 has been.
  • the suction chambers in the flow channel walls 17A and / or 17B and one or more other suction levels the at least one suction chamber in the associated at least one to accommodate a flow guide profile.
  • the flow guide profiles not only in the flow direction in a row, but instead or in addition for this purpose also to be arranged side by side and between the side by side arranged profiles the flow in the direction to let the outlet side of the flow channel pass through.
  • Profiles 1 to 3 serving as flow guide profiles can be in various ways within the ejector 100 are attached.
  • elongated partitions 4, which are also used as flow guide profiles serve (Figure 2), and with their longitudinal direction approximately parallel to the direction of extension of the flow channel and thus approximately parallel to the main flow direction of the fluid in the flow channel and the flow channel cross section in partial flow channels 17 ', 17 ", 17 '' ', ... divide, as indicated in Figure 2 is. It is possible - if necessary - for fastening the profiles 1 to 3 partitions 4 'to use, which are in Taper flow direction.
  • partition walls 4 serving as flow guide profiles are shown in dashed lines in FIG.
  • the partition walls 4 primarily perform the following three functions: First, they give the profiles 1 to 3 support and prevent them from swinging under the influence of the flow vortices that form in the flow channel. Secondly, the housing 5 can also be mechanically stabilized with them. Thirdly, they reduce the spread of the flow vortices in the mixing zones and thus shorten the required flow channel length as seen in the flow direction. They therefore improve the flow conditions within the meaning of the invention even without the presence of the profiles 1 to 3 oriented perpendicular to them and, as such, can also be used alone.
  • the system shown in Figure 2 from transverse and longitudinal Profiles 1 that can be installed in the flow channel 17 to 3 and partitions 4 can be manufactured and assembled in a simple manner be that each have a partition on one or Provide profiles 1 to 3 on both sides, in particular is made in one piece with these, at the opposite partitions and the free ends profiles 1 to 3 corresponding guides, for example in the form of aligned holes and dowel bolts 25 are provided. It is even possible and special advantageous, complete segments or ejector modules 50, 60, consisting of the corresponding segments of the Ejector housing and the flow guide profiles, as in the Figures 4 and 5 shown as a one-piece component, for. B.
  • Figure 3 shows how that System of flow guide profiles 1 to 4 instead of Figure 2 instead straight stretched can also be circular.
  • ejector module 60 which is shown in FIG is shown in perspective, can - as already mentioned - A circular or segmental ejector by joining together a plurality of ejector module 60 build up.
  • the one-piece ejector module 60 is made from a floor plan with a segment of a circle Housing part 5C, in which the - in Figure 5 up - Connected via flow gaps 21 'to the flow channel 17' Suction chambers 7 'to 10' are integrated.
  • the end of the chambers 7 'to 10' in the axial direction - that in FIG. 5 means downwards - forms an end wall 26 ', which per suction chamber at least one inlet 16 'for the has transporting medium, which inlet in turn can be equipped with a check valve.
  • the inlets 16 ' connect the suction chambers 7 'to 10' with one arranged below the end wall 26 ' Chamber 27 ', which acts as a distribution chamber for the promoting fluid.
  • the embodiment 1 are laterally in the axial direction - that is in Figure 5 above - the second to fourth passage gap 21 'profiles 1' to 3 'provided, which on a radial Partition 4 'of the housing 5C, which at the same time Suction chambers 7 'to 10' closed on one side in the axial direction, are supported.
  • the remaining open pages of the suction chambers 7 'to 10' through the partition 4 ' next (attached) ejector module 60 closed.
  • the upper end of the ejector forms - similar to in the embodiment of Figure 1 - a not shown Upper part of the housing, which has a - not shown in the drawing - inlet nozzle for the Has propellant.
  • the upper housing part can be made from one simple, lid-like component exist; but it can also be advantageous in the upper housing part of the suction chambers 7 ' to arrange further suction chambers opposite each other up to 10 ', which also with a containing the fluid to be pumped Chamber are connected.
  • Flow channel wall 17A, 17B transverse to the main flow direction A is seen to be concave, that is, hollow - to a certain extent corresponding to those in this area convex surface of profiles 1 to 3.
  • Flow channel wall 17A, 17B transverse to the main flow direction A is seen to be concave, that is, hollow - to a certain extent corresponding to those in this area convex surface of profiles 1 to 3.

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)

Claims (12)

  1. Pompe à éjecteur pour aspirer et/ou convoyer des matières ou mélanges de matières aptes à s'écouler à l'aide d'un milieu de propulsion fluide avec un boítier (5),
    avec au moins une entrée (15) pour le milieu de propulsion,
    avec au moins une entrée (16, 16') pour la matière ou le mélange de matières apte à s'écouler,
    avec au moins un canal d'écoulement (17) pour le mélange et le passage en commun du milieu de propulsion et de la matière ou du mélange de matières apte à s'écouler avec au moins une buse (18), au moins une zone de mélange (19) et au moins un diffuseur (20),
    avec au moins une enceinte d'aspiration (7, 7', 8, 8', 9, 9', 10, 10'), qui est reliée fluidiquement à l'entrée (16, 16') pour la matière ou le mélange de matières apte à s'écouler d'une part et avec le canal d'écoulement (17) par une fente de passage (21, 21') d'autre part et
    avec au moins une sortie commune (22) pour le milieu de propulsion et/ou la matière ou le mélange de matières apte à s'écouler,
       caractérisée par
    au moins un profilé (1, 1', 2, 2', 3, 3') disposé dans le canal d'écoulement (17), présentant une zone de surface avec une composante de surface orientée vers le trajet d'écoulement initial, qui refoule le fluide s'écoulant vers le profil (1, 1', 2, 2', 3, 3') lui-même et le fait sortir avec une composante de direction latérale du trajet d'écoulement initial de telle sorte que le fluide dans le milieu arrive plus près d'une paroi de canal d'écoulement (17a, 17b) délimitant latéralement le canal d'écoulement (17).
  2. Pompe à éjecteur selon la revendication 1, caractérisée en ce que le profil de guidage d'écoulement précité, dont au moins un est prévu, est un profil longitudinal (1, 1', 2, 2', 3, 3') et s'étendant avec sa direction d'extension longitudinale à peu près perpendiculairement à la direction d'extension du canal d'écoulement (17) et par conséquent à peu près perpendiculairement à la direction d'écoulement principale du fluide dans le canal d'écoulement.
  3. Pompe à éjecteur selon la revendication 2, caractérisée en ce que les profilés (1, 1', 2, 2', 3, 3') sont symétriques en section transversale.
  4. Pompe à éjecteur selon la revendication 2 ou 3, caractérisée en ce que l'endroit de la section transversale la plus étroite, résultant du profilé (1, 1', 2, 2', 3, 3'), du canal d'écoulement (17) se situe au voisinage de la, au moins une, fente de passage (21 ; 24) pour la matière ou le mélange de matières apte à s'écouler, notamment directement en amont de la fente traversante.
  5. Pompe à éjecteur selon l'une des revendications 2 à 4, caractérisée en ce que dans les profilés (1, 1', 2, 2', 3, 3') disposés les uns derrière les autres dans la direction d'écoulement, la section transversale des profilés augmente dans la direction d'écoulement de profilé en profilé.
  6. Pompe à éjecteur selon l'une des revendications 2 à 5, caractérisée en ce qu'au moins l'un des profilés (1, 1', 2, 2', 3, 3') est creux à l'intérieur et est relié fluidiquement d'une part au canal d'écoulement (17) et d'autre part à une entrée (16) pour la matière ou le mélange de matières apte à s'écouler.
  7. Pompe à éjecteur pour aspirer et/ou convoyer des matières ou des mélanges de matières aptes à s'écouler à l'aide d'un milieu de propulsion fluide avec un boítier (5),
    avec au moins une entrée ( 15) pour l'agent de propulsion,
    avec au moins une entrée (16, 16') pour la matière ou le mélange de matières apte à s'écouler,
    avec au moins un canal d'écoulement (17) pour le mélange et le passage en commun de l'agent de propulsion et de la matière ou du mélange de matières apte à s'écouler avec au moins une buse (18), au moins une zone de mélange (19) et au moins un diffuseur (20),
    avec au moins une enceinte d'aspiration (7, 7',8, 8', 9, 9', 10, 10') qui est reliée fluidiquement à l'entrée (16, 16') pour la matière ou le mélange de matières apte à s'écouler d'une part et au canal d'écoulement (17) par une fente traversante (21, 21') d'autre part, et
    avec au moins une sortie commune (22) pour l'agent de propulsion et la matière ou le mélange de matières apte à s'écouler,
       caractérisée par
       au moins une paroi de séparation oblongue (4) disposée dans le canal d'écoulement (17) qui s'étend avec sa direction d'extension longitudinale à peu près parallèlement à la direction d'extension du canal d'écoulement (17) et par conséquent à peu près parallèlement à la direction d'écoulement principale du fluide dans le canal d'écoulement (17) et qui divise la section transversale du canal d'écoulement en des canaux partiels d'écoulement (17', 17", 17''', ...).
  8. Pompe à éjecteur selon la revendication 7, caractérisée en ce que l'épaisseur de la paroi de séparation (4) diminue dans la direction d'extension du canal d'écoulement (17).
  9. Pompe à éjecteur selon l'une des revendications 1 à 8, caractérisée en ce qu'un boítier d'éjecteur comportant un canal d'écoulement (17), une enceinte d'entrée (6), au moins une enceinte d'aspiration (7, 8, 9, 10, 23), une paroi de séparation (4) et le cas échéant des profilés (1, 1', 2, 2', 3, 3') est réalisé sous forme de module de pompe à éjecteur.
  10. Pompe à éjecteur selon la revendication 9, caractérisée en ce que les modules de pompe à éjecteur sont réalisés en une pièce.
  11. Pompe à éjecteur selon l'une des revendications 1 à 10, caractérisée en ce qu'elle est fabriquée par un assemblage de modules de pompe à éjecteur.
  12. Pompe à éjecteur selon l'une des revendications 1 à 11, caractérisée en ce que respectivement une paroi de séparation (4) est pourvue sur une ou les deux surfaces latérales de profilés (1, 1', 2, 2', 3, 3').
EP93917750A 1992-08-06 1993-08-05 Pompe a ejecteur Expired - Lifetime EP0654124B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9210497U DE9210497U1 (de) 1992-08-06 1992-08-06 Ejektorpumpe
DE9210497U 1992-08-06
PCT/EP1993/002084 WO1994003732A1 (fr) 1992-08-06 1993-08-05 Pompe a ejecteur

Publications (2)

Publication Number Publication Date
EP0654124A1 EP0654124A1 (fr) 1995-05-24
EP0654124B1 true EP0654124B1 (fr) 1998-01-21

Family

ID=6882380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93917750A Expired - Lifetime EP0654124B1 (fr) 1992-08-06 1993-08-05 Pompe a ejecteur

Country Status (6)

Country Link
US (2) US5593284A (fr)
EP (1) EP0654124B1 (fr)
JP (1) JP2920421B2 (fr)
DE (2) DE9210497U1 (fr)
TW (1) TW245758B (fr)
WO (1) WO1994003732A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2810080B1 (fr) * 2000-06-09 2002-09-06 Applic Procedes Electronique Procede pour le reglage du debit aspire dans un generateur de vide et generateur de vide a debit ajustable
US7901191B1 (en) 2005-04-07 2011-03-08 Parker Hannifan Corporation Enclosure with fluid inducement chamber
GB2455351B (en) * 2007-12-07 2012-04-11 Microsaic Systems Plc Air amplifier
DE102008024434A1 (de) * 2008-05-20 2009-11-26 Fleissner Gmbh Vorrichtung zur Beaufschlagung von flächigem Material mittels unter Druck stehenden Medien
CN105736482B (zh) * 2010-06-21 2018-04-10 靳北彪 高效射流泵
GB2509182A (en) 2012-12-21 2014-06-25 Xerex Ab Vacuum ejector with multi-nozzle drive stage and booster
EP2935899B1 (fr) * 2012-12-21 2021-12-08 Piab Aktiebolag Éjecteur à succion avec section elliptique divergente
GB2509184A (en) 2012-12-21 2014-06-25 Xerex Ab Multi-stage vacuum ejector with moulded nozzle having integral valve elements
GB2509183A (en) * 2012-12-21 2014-06-25 Xerex Ab Vacuum ejector with tripped diverging exit flow nozzle
GB201418117D0 (en) 2014-10-13 2014-11-26 Xerex Ab Handling device for foodstuff
US9828953B2 (en) * 2014-12-01 2017-11-28 Dayco Ip Holdings, Llc Evacuator system having multi-port evacuator
DE102015200341A1 (de) * 2015-01-13 2016-07-14 Polytec Plastics Germany Gmbh & Co. Kg Mehrstufige Saugstrahlpumpe

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US597212A (en) * 1898-01-11 Ludwig ahebeckee
US636333A (en) * 1899-06-14 1899-11-07 William Guethler Boiler-tube cleaner.
US3101169A (en) * 1959-11-09 1963-08-20 Stauffer Chemical Co High vacuum chamber
US3255708A (en) * 1964-01-02 1966-06-14 Boeing Co Ejector pump
US3371618A (en) * 1966-02-18 1968-03-05 Chambers John Pump
US3442086A (en) * 1967-10-19 1969-05-06 Hilbert W Nieman Jet type air motor
US3460746A (en) * 1967-10-27 1969-08-12 Rocket Research Corp Two-stage inflation aspirator
US3640645A (en) * 1969-08-28 1972-02-08 Rocket Research Corp Method and apparatus for aspirating fluids
DE2058392A1 (de) * 1970-11-27 1972-05-31 Messerschmitt Boelkow Blohm Wasserstrahltriebwerk
US3768394A (en) * 1971-06-18 1973-10-30 Powlesland Eng Ltd Device for producing dynamic flow in fluids to form curtains of the fluid
FR2397870A1 (fr) * 1977-07-18 1979-02-16 Coorens Antoine Appareils a jet pour l'aspiration, la compression et le melange de fluides
SE455220B (sv) * 1983-06-03 1988-06-27 Svenska Rotor Maskiner Ab Ejektorpump med ett ringformat vesentligen radiellt utat riktat munstycke
JPS614900A (ja) * 1984-06-18 1986-01-10 Shoketsu Kinzoku Kogyo Co Ltd エゼクタ装置
IL74282A0 (en) * 1985-02-08 1985-05-31 Dan Greenberg Multishaft jet suction device
DE3851481D1 (de) * 1987-06-29 1994-10-20 Volkmann Thilo Strahlpumpe.
US4917152A (en) * 1989-08-14 1990-04-17 Decker William T Fluid injector
SU1675588A1 (ru) * 1989-10-03 1991-09-07 Институт машиноведения и металлургии Дальневосточного отделения АН СССР Вихревой эжектор
DE4011218A1 (de) * 1990-04-06 1991-10-10 Kruse Franz Josef Ejektorvorrichtung
DE9210496U1 (de) * 1992-08-06 1993-12-02 Volkmann Thilo Mehrstufige Ejektorpumpe
DE4225956A1 (de) * 1992-08-06 1994-02-17 Thilo Volkmann Mehrstufige Ejektorpumpe sowie Verfahren und Werkzeug zu ihrer Herstellung

Also Published As

Publication number Publication date
US5593284A (en) 1997-01-14
EP0654124A1 (fr) 1995-05-24
DE59308050D1 (de) 1998-02-26
WO1994003732A1 (fr) 1994-02-17
US5810563A (en) 1998-09-22
DE9210497U1 (de) 1993-12-09
JP2920421B2 (ja) 1999-07-19
TW245758B (fr) 1995-04-21
JPH08507345A (ja) 1996-08-06

Similar Documents

Publication Publication Date Title
EP0654124B1 (fr) Pompe a ejecteur
DE2262883C2 (de) Zentrifugalpumpe
DE1817430A1 (de) Regenerativkompressor
EP0109097B2 (fr) Echangeur de chaleur à plaques
WO2011151323A2 (fr) Canal à surface de guidage d'écoulement
DE2331614A1 (de) Seitenkanal-geblaese
DE2658323A1 (de) Vorrichtung zur kuehlung durch zerstaeubung
EP0654125B1 (fr) Pompe a ejecteur a plusieurs etages
DE1194116B (de) Vorrichtung zum Einfuehren eines Luftstroms durch Ejektorwirkung in einen anderen Luftstrom
WO2016062610A1 (fr) Pompe à jet
DE1653553C3 (fr)
EP0504740B1 (fr) Ventilateur disperseur
AT404287B (de) Saugrohr einer brennkraftmaschine
DE3333172A1 (de) Vorrichtung zum abscheiden von fluessigkeitstropfen oder feinkoernigen feststoffen aus einem gasstrom
DE1279538B (de) Zentrifugalabscheider
DE2431370C2 (de) Vergaser für eine Brennkraftmaschine
DE4340011A1 (de) Peripheralpumpe, insbesondere zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
DE3920123C1 (fr)
DE1428249A1 (de) Strahlpumpe zweidimensionaler Bauart mit einem konvergentdivergenten Mischdiffusor
DE1523469C3 (de) Fluidbetriebene Vorrichtung, insbesondere Strömungsverstärker
DE102018105828A1 (de) Vorrichtung zur Aufweitung eines Luftvolumenstroms
DE968101C (de) Einrichtung an radialen Kreiselverdichtern und -pumpen zur Umsetzung von kinetischer Energie des Stroemungsmittels in Druckenergie
DE916748C (de) Strahlpumpe
DE2014524C3 (de) Vorrichtung zum Abscheiden von festen Teilchen aus Gasen
DE4405945C2 (de) Taumelscheibenpumpe mit durchströmten Seitenräumen

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 19950303

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

17Q First examination report despatched

Effective date: 19960313

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 59308050

Country of ref document: DE

Date of ref document: 19980226

ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980424

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030825

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040806

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050805

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070828

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070821

Year of fee payment: 15

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080805

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080805

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121023

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59308050

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130806