EP1131562B1 - Mehrstufige ejektorpumpe - Google Patents
Mehrstufige ejektorpumpe Download PDFInfo
- Publication number
- EP1131562B1 EP1131562B1 EP00962511A EP00962511A EP1131562B1 EP 1131562 B1 EP1131562 B1 EP 1131562B1 EP 00962511 A EP00962511 A EP 00962511A EP 00962511 A EP00962511 A EP 00962511A EP 1131562 B1 EP1131562 B1 EP 1131562B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- bore
- pump according
- ejector pump
- nozzles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/48—Control
- F04F5/52—Control of evacuating pumps
-
- 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
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/467—Arrangements of nozzles with a plurality of nozzles arranged in series
Definitions
- the invention relates to a multi-stage ejector with the features of Preamble of claim 1.
- the housing kit-like composed of individual parts.
- Each kit carries in a transverse wall passing through a housing interior one of the nozzles. If registerede ejectors are to be realized, this wall can also several Carry nozzles in juxtaposition.
- the finished pump is created. Here is the onset of the nozzles, z. In the Ways of gluing or even the one-piece integration of the nozzle in the partition comparatively easy. However, arise between the housing parts many sealing surfaces. The possibilities for compact design are very restricted.
- Such an ejector is u. a. from DE-C1-44 91 977, Figures 7 to 9, known.
- ejector pumps in which a Stranggußprofil with inner Partitions is used and the nozzles across the profile axis through graduated Holes are used in the individual partitions.
- the predominant Part of the nozzles is located in the two sides of the partitions Cavities which serve the gas distribution. Although omitted the aforementioned many sealing surfaces, but is the fitting and sealing of the nozzles difficult. Besides, compactness of such ejectors is not essential better than the aforementioned modular pumps.
- the multistage is the one-piece, axially aligned nozzle body by sections larger Inside diameter connected to a suction port.
- This type of nozzle preparation requires on the one hand very complex forming steps in the area undercut Zones.
- only a cylindrical or conical Course of the successive nozzle cross sections feasible.
- the compressed gas supply and the suction chamber are housed in flanged components, which using a variety of filigree seals with the the one-piece nozzle housing body connected by screws become.
- the compressed gas connection and the suction gas connection are in one Side surface arranged parallel to the nozzle channel within the walls flanged housing parts. These gas connections are perpendicular to the Nozzle axis continued.
- the variety of additional sealing surfaces in the flanged area Housing parts make this ejector susceptible to leakage. This Risk is due to U-shaped running along the nozzle assembly, closed Side walls of the housing body only slightly mitigated.
- the invention is based on the problem, a generic Multi-stage ejector pump in compact design with replaceable nozzles and high efficiency.
- a multi-stage ejector with the features of claim 1.
- the ejector nozzle system of a set consists of individual nozzles and nozzle spacers, wherein the spacers leave the suction gas inlet gap between adjacent nozzles.
- the nozzles are inserted one behind the other in the nozzle receiving shaft.
- each individual nozzle has at least two axially spaced support elements to their non-tilting or tilting support against the shaft wall.
- the spacers can - in principle - z. B. in the form of stages in the nozzle receiving shaft be provided on the housing element. Preferred according to the invention, because easier to produce and easier to the desired nozzle arrangement However, they are separate or, preferably, one-piece - preferred eccentric - provided on the nozzles and in each of the two Cases inserted into the nozzle receiving shaft. A particularly high efficiency the ejector pump is reached when the spacers are only made of slender noses or similar projections on a Düsenstimende are. It is preferred to provide only a single such spacer. A preferred arrangement of the one or more nose-shaped Spacer is chosen so that between two adjacent nozzles the Spacers are arranged in flow-poorer peripheral zones of the nozzles, z. B. on the gas inlet side opposite the nozzle side.
- an ejector is a parallel to the nozzle receiving shaft for the compressed gas supply extending bore (pressure gas bore) provided.
- Their axis forms, more preferably, with the axis of the nozzle receiving shaft and the Suction gas hole - ie with the suction gas well - essentially a plane.
- a flat cubic block made of light metal can be used as the housing element or plastic can be realized by drilling both from the solid as can also be produced by injection molding.
- the parallel arrangement of Nozzle receiving shaft with the suction gas shaft and / or the compressed gas bore (Gas duct) in a single housing block is - independent of the features of claim 1 - of independent inventive significance.
- control valves for switching on and off the vacuum function and / or for the active blowing off of a sucked part, d. H. for the purpose of collapsing of the vacuum are used in receiving bores, the latter can run at right angles through the pressure gas bore and into the Extend nozzle receiving shaft into it. That way, despite the Presence of such control valves a very short length of Ejektorblocks allows.
- the control valves are reciprocable within valve sleeves.
- the valve sleeves are by means of O-rings in the control valve holes used and by a bolted to the Ejektorblock valve plate in her Axial direction clamped.
- the valve plate takes in a known manner electromagnetic Pilot or servo valves on which a fluidic connection establish or interrupt between compressed gas and control valve and thereby open or close the control valves pneumatically.
- Multi-stage ejector pumps according to the invention can be used for generating vacuum z. B. for handling applications (sheet metal transport in press lines for body parts, Pick-and-place applications in plastic injection molding and the like) be used. They are extremely compact and lightweight and can easily integrate functions such as electrical control of vacuum on and off switching and / or blowing off as well Monitoring the vacuum level.
- From Figure 1 is a cuboid in its basic form, as a housing element 10th serving ejector block of drilled solid aluminum recognizable.
- a housing element 10th serving ejector block of drilled solid aluminum recognizable.
- the housing element 10 designed as a four-fold stepped bore Nozzle receiving shaft 14, which has a merely offset from axially, transverse bores 30C, 32C, 16C and 16D interrupted Has shaft wall 14A and which in the same end wall 10C of the Ejectorblocks as the pressure gas bore 12 opens and (just) just before the opposite Ejector block end wall 10D ends blind.
- a third, as a suction chamber serving suction gas bore 16 or suction gas well is simple configured and extends in the same plane as the pressure gas bore 12th and the nozzle receiving well 14, but with oppositely disposed Mouth and blind end, the mouth as Sauggaseinlrawö réelle 16 A serves.
- a three-piece ejector-nozzle system 18 used sealingly. This consists of a compressed gas nozzle 18A and a first and a second diffuser 18B and 18C. All three individual nozzles are on at least each two axially spaced apart locations against tilting Shaft wall of the nozzle receiving shaft 14 supported. This is predominantly done through O-ring seals 20 (the O-rings were for clarity omitted; only the o-ring grooves are shown) and a light one Snug fit of the compressed gas nozzle 18A at the bottom of the hole. Through multiple gradations 18D, 18E, 18F, and 18G may wear the nozzles 18A through 18C into the nozzle receiving well with low wear 14 are inserted.
- the nozzles are coaxial with each other arranged and internally biconical with optimized cross-sectional profile shaped; they therefore have cross-sectional zones at both ends.
- the diffusers 18B and 18C are integral associated with them and eccentrically arranged finger-shaped spacers 22A and 22B ( Figure 2). These form slim extensions a location of the circumference in the area of the Düsenstim preparation. They disturb the suction gas inlet at the suction gas inlet gap 24A and 24B between adjacent nozzles almost not at all, because they are in the less flowy, from the suction chambers 26AB distant zones are arranged. In the one shown in Figures 1 and 2 Use position of the individual nozzles support the spacers 22A, 22B on the adjacent Düsenstimwand 18 A 'and 18 B' from.
- the nozzles 18A to 18C are connected to the housing member 10 by a side end bolted terminal plate 28 secured and by means of the spacers 22A, 22B axially braced against each other or held in position.
- the connection plate 28 has threaded bores 28A, 28B for a compressed gas connection and an exhaust connection on.
- control valves 30, 32 are with O-rings 20 in stepped valve receiving bores 30C and 32C inserted. These valve receiving bores extend from an upper side wall 10A of the housing element 10, starting out into the nozzle receiving shaft 14 inside.
- the control valves consist of a transversely perforated Guide sleeve 30A or 32A and a valve stem 308 or 32B with actuator piston 30E or 32E.
- the valve tappets 30B, 32B and the adjusting pistons 30E, 32E (initially) separate components, so that they, their different Diameter, from opposite sides into the guide sleeve 30A, 32A can be used.
- valve stem 30B, 32B is in a central bore 30E ', 32E' of the actuating piston 30E, 32E for connecting the two parts, z. B. by screwing, insertable.
- One on the side wall 10A of the housing member 10 sealingly under sufficient pressure applied valve plate 34 has two pairs of through holes 36A, 36B and 38A, 38B showing the interior of the pressurized gas bore 12 on the one hand and the valve tappets 30B and 32B on the other hand with electromagnetic Connect switching valves 36 and 38, respectively. These switching valves 36, 38 are electrically driven and give the fluid path in which they are installed are free or block it off.
- the float of the valve lifters 30B and 32B thus takes place pneumatically according to the pending on the valve tappets Gas pressures with open or closed switching valve 36 or 38th Dies happens taking into account different piston surfaces on the top and the plunger side of the adjusting pistons 30E, 32E.
- the control valve 30 is shown in its open position in FIG the compressed gas path, as indicated by flow arrows, the nozzles 18A, 18B and 18C flows through.
- the control valve 32 is closed during this time, because a vacuum should be built up and held. Once sufficient vacuum is reached, the control valve 30 can be closed to save energy become.
- the control valve 32 are opened.
- there pressurized gas flows over within the housing member 10 extending, in the Drawing dashed lines channels 32D compressed gas to the suction port 40A a vacuum port block 40. This is on the end wall 10D of the housing member 10 tightly bolted and houses a vacuum monitoring switch 40B.
- This space-saving arrangement of the control valves 30 and 32 is defined by through holes 30A ', 32A' of the guide sleeves 30A, 32A in the area the pressure gas bore 12 allows.
- Saugkammem 26A and 26B are sealed by the in the suction gas inserted check valves 26 B and 26 C separated from each other and have the well-known effect of faster achievement of the desired vacuum and the higher effectiveness of compressed air or energy use.
- the suction chambers 26A and 26B are with annular clearance in the region of the Sauggasseintrittsspalte 24A and 24B through transverse to the suction gas bore 16 extending Connecting openings 16 C and 16 D connected to the nozzle receiving shaft 14.
- the switch valves 36 and 38 opposite Side wall 10B of the housing member 10 through a blind plug 16E and 16D lockable cross bore on.
- a multi-stage ejector according to the invention thus consists of a core serving as Ejektorblock flat cuboid housing element 10 with three substantially mutually parallel bores 12, 14, 16 in the a direction of the housing element and at right angles in a second Direction of the housing member 10 extending connecting holes 30 C, 32C, 10C, 16D, wherein the bore mouths receiving forehead and Side walls 10A to 10D with connecting plates 28, 34, 40 sealing screwed or sealed with blind plugs 16D, 16E.
- the switching valve 38 is closed and vented on the outlet side, so that the valve tappet 30B moves back to the closed position. If the reduction of the vacuum is actively supported be, so now the switching valve 36 is electromagnetic and thereby the control valve 32 is pneumatically opened so that compressed air to the vacuum port 40A arrives.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Description
- Fig. 1
- eine Ejektorpumpe in Axialschnitt-Ansicht;
- Fig. 2
- von der selben Ejektorpumpe das Düsensystem in perspektivischer Darstellung sowie
- Fig. 3
- von der selben Ejektorpumpe eines der Steuerventile in perspektivischer, längsgeschnittener Darstellung in geöffnetem Ventilzustand.
- 10
- Gehäuseelement
- 10A
- Seitenwand
- 10B
- Seitenwand
- 10C
- Stirnwand
- 10D
- Stirnwand
- 12
- Druckgasbohrung
- 12A
- Druckgaseinlaßöffnung
- 14
- Düsenaufnahmeschacht
- 14A
- Abgasauslaßöffnung
- 16
- Sauggasbohrung
- 16A
- Sauggaseinlaßöffnung
- 16C
- Verbindungsöffnung
- 16D
- Verbindungsöffnung
- 16G
- Blindstopfen
- 16F
- Blindstopfen
- 18
- Ejektor-Düsen-System
- 18A
- Druckgasdüse
- 18A'
- Düsenstirnwand
- 18B
- Diffusor
- 18B'
- Düsenstirnwand
- 18C
- Diffusor
- 18D
- Abstufung
- 18E
- Abstufung
- 18F
- Abstufung
- 18G
- Abstufung
- 20
- O-Ring-Dichtungen
- 22A
- Abstandshalter
- 22B
- Abstandshalter
- 24A
- Sauggaseintrittsspalt
- 24B
- Sauggaseintrittsspalt
- 24C
- Druckgaseintrittsöffnung
- 26A
- Saugkammer
- 26B
- Saugkammer
- 26C
- Rückschlagventil
- 26D
- Rückschlagventil
- 28
- Anschlußplatte
- 28A
- Gewindebohrung
- 28B
- Gewindebohrung
- 30
- Steuerventil
- 30A
- Führungshülse
- 30A'
- Durchbohrung
- 30B
- Ventilstößel
- 30C
- Ventilaufnahmebohrung
- 30E
- Stellkolben
- 30E'
- Bohrung
- 32
- Steuerventil
- 32A
- Führungshülse
- 32A'
- Durchbohrung
- 32B
- Ventilstößel
- 32C
- Ventilaufnahmebohrung
- 32D
- Kanal
- 32E
- Stellkolben
- 32E'
- Bohrung
- 34
- Ventilplatte
- 36
- Schaltventil
- 36A
- Durchgangsbohrung
- 36B
- Durchgangsbohrung
- 38
- Schaltventil
- 38A
- Durchgangsbohrung
- 38B
- Durchgangsbohrung
- 40
- Vakuumanschlußblock
- 40A
- Sauganschluß
- 40B
- Vakuumüberwachungsschalter
Claims (15)
- Mehrstufige Ejektorpumpe, bestehend
aus mindestens einem Gehäuseelement (10) mit mindestens einer Druckgaseinlaßöffnung (12A) und mit mindestens einer Sauggaseinlaßöffnung (16A) und mit mindestens einer Abgasauslaßöffnung (14A) sowie
aus mindestens einer Düsenanordnung (Ejektor-Düsen-System 18) mit mindestens zwei, innerhalb des Gehäuseelementes (10) koaxial hintereinander angeordneten und axial voneinander beabstandeten Düsen (Druckgasdüse 18A und Diffusoren 18B, 18C) mit mindestens einer Druckgaseintrittsöffnung (24C), mit mindestens einem Sauggaseintrittsspalt (24A, 24B) zwischen benachbarten Düsen und einer Abgasaustrittsöffnung, wobei
das Gehäuseelement einen, z. B. als Bohrung ausgebildeten, Düsenaufnahmeschacht (14) mit im wesentlichen durchlaufender Schachtwandung und mindestens je einer Wanddurchbrechung (Verbindungsöffnungen 16C, 16D) je Ejektorstufe für den Sauggaseintritt in den Sauggaseintrittsspalt (24A, 24B) aufweist und
die Düsen (18A, 18B, 18C) auf ihrem Außenumfang mit mindestens einer umlaufenden Dichtung (20) versehen sind, wobei das Ejektor-DüsenSystem (18) in den Düsenaufnahmeschacht (14) axial eingeschoben wird,
dadurch gekennzeichnet,daß das Ejektor-Düsen-System (18) aus einem Satz von einzelnen Düsen (18A, 18B, 18C) und Düsen-Abstandshaltem besteht;daß die Düsen (18A, 18B, 18C) auf ihrem Außenumfang jeweils axial beabstandete Abstützelemente zur kippfreien oder kipparmen Abstützung gegenüber der Schachtwandung versehen und in den Düsenaufnahmeschacht (14) einschiebbar sind, unddaß mindestens ein Einspannmittel, wie eine Anschlußplatte (28), zum axialen Verspannen oder In-Position-Halten der einzelnen Düsen (18A, 18B, 18C) und der Düsen-Abstandshalter vorgesehen ist. - Ejektorpumpe nach Anspruch 1, dadurch gekennzeichnet, daß Düsen-Abstandshalter (22A, 22B) unter Freilassen der Sauggaseintrittsspalte (24A, 24B) zwischen den Düsenstimenden zwischen benachbarten Düsen (18A, 18B; 18B, 18C) eingefügt und in den Düsenaufnahmeschacht einschiebbar sind.
- Ejektorpumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Abstandshalter (22A, 22B) als schlanke Nasen oder ähnliche Vorsprünge an einem Düsenstirnende ausgestaltet sind.
- Ejektorpumpe nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß ein einziger Abstandshalter (22A, 22B) in einem strömungsarmen Bereich der Umfangszone der Düsen, also exzentrisch, angeordnet ist.
- Ejektorpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Saugkammem (26A, 26B) in einer im wesentlichen parallel zum Düsenaufnahmeschacht (14) angeordneten Sauggasbohrung (16) vorgesehen sind.
- Ejektorpumpe nach Anspruch 5, gekennzeichnet durch in die Sauggasbohrung (16) dichtend einschiebbare Rückschlagventile (26C, 26D).
- Ejektorpumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Düsenaufnahmeschacht (14) und/oder die Sauggasbohrung (16) als im Durchmesser abgestufte Bohrungen ausgeführt sind.
- Ejektorpumpe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Düsen (18A, 18B, 18C) und/oder die Rückschlagventile (26C, 26D) von einer einzigen Seite her in eine tot endende Bohrung (Düsenaufnahmeschacht 14 und/oder Sauggasbohrung 16) einschiebbar sind.
- Ejektorpumpe nach einem der Ansprüche 1 bis 8, gekennzeichnet durch eine sich im wesentlichen parallel zum Düsenaufnahmeschacht (14) erstreckende Druckgasbohrung (12).
- Ejektorpumpe nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Gehäuseelement (10) als flacher kubischer Block aus Leichtmetall oder Kunststoff gestaltet ist.
- Ejektorpumpe nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß etwa rechtwinklig zum Düsenaufnahmeschacht (14) mindestens eine Verbindungsbohrung zu der Druckgasbohrung (12) und/oder zu der Sauggasbohrung (16) vorgesehen ist.
- Ejektorpumpe nach Anspruch 11, dadurch gekennzeichnet, daß mindestens ein Steuerventil (30, 32) in einer die Druckgasbohrung (12) und den Düsenaufnahmeschacht (14) verbindenden Ventilaufnahmebohrung (30C) angeordnet ist und die Druckgasströmung durch die Verbindungsöffnung beherrscht.
- Ejektorpumpe nach Anspruch 12, dadurch gekennzeichnet, daß das Steuerventil (30; 32) eine im Bereich der Druckgasbohrung (12) durchbrochene Ventil-Führungshülse (30A; 32A) aufweist.
- Ejektorpumpe nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß die Druckgasbohrung mindestens eine durch ein Schaltventil (36; 38) beherrschte Bypass-Leitung zwischen dem Bohrungsinneren und dem Steuerventil (30; 32) für dessen pneumatische Betätigung aufweist.
- Ejektorpumpe nach Anspruch 14, dadurch gekennzeichnet, daß das Steuerventil (30; 32) einen doppelt wirksamen Stellkolben (30E; 32E) mit beidseitig unterschiedlichen Kolbenflächen aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29916531U | 1999-09-20 | ||
DE29916531U DE29916531U1 (de) | 1999-09-20 | 1999-09-20 | Ejektorpumpe |
PCT/EP2000/009208 WO2001021961A1 (de) | 1999-09-20 | 2000-09-20 | Mehrstufige ejektorpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1131562A1 EP1131562A1 (de) | 2001-09-12 |
EP1131562B1 true EP1131562B1 (de) | 2005-06-08 |
Family
ID=8079167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00962511A Expired - Lifetime EP1131562B1 (de) | 1999-09-20 | 2000-09-20 | Mehrstufige ejektorpumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US6582199B1 (de) |
EP (1) | EP1131562B1 (de) |
DE (2) | DE29916531U1 (de) |
WO (1) | WO2001021961A1 (de) |
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JP4132897B2 (ja) * | 2002-03-19 | 2008-08-13 | 株式会社日本ピスコ | 真空発生装置 |
DE10308420A1 (de) * | 2003-02-27 | 2004-09-09 | Leybold Vakuum Gmbh | Testgaslecksuchgerät |
FR2852364B1 (fr) * | 2003-03-11 | 2006-07-21 | Dispositif d'aspiration pneumatique | |
KR100629994B1 (ko) * | 2005-12-30 | 2006-10-02 | 한국뉴매틱(주) | 진공 이젝터 펌프 |
DE102008024434A1 (de) * | 2008-05-20 | 2009-11-26 | Fleissner Gmbh | Vorrichtung zur Beaufschlagung von flächigem Material mittels unter Druck stehenden Medien |
US8672644B2 (en) * | 2008-09-09 | 2014-03-18 | Dresser-Rand Company | Supersonic ejector package |
DE202009019074U1 (de) | 2009-11-24 | 2016-05-23 | J. Schmalz Gmbh | Druckluftbetriebener Unterdruckerzeuger |
GB2509182A (en) | 2012-12-21 | 2014-06-25 | Xerex Ab | Vacuum ejector with multi-nozzle drive stage and booster |
GB2509184A (en) | 2012-12-21 | 2014-06-25 | Xerex Ab | Multi-stage vacuum ejector with moulded nozzle having integral valve elements |
EP2935899B1 (de) | 2012-12-21 | 2021-12-08 | Piab Aktiebolag | Vakuumejektordüse mit divergierendem elliptischem querschnitt |
GB2509183A (en) | 2012-12-21 | 2014-06-25 | Xerex Ab | Vacuum ejector with tripped diverging exit flow nozzle |
US9328702B2 (en) | 2013-10-24 | 2016-05-03 | Ford Global Technologies, Llc | Multiple tap aspirator |
US9297341B2 (en) | 2014-01-20 | 2016-03-29 | Ford Global Technologies, Llc | Multiple tap aspirator with leak passage |
KR101424959B1 (ko) | 2014-04-08 | 2014-08-01 | 한국뉴매틱(주) | 진공펌프 |
DE102014209427B4 (de) * | 2014-05-19 | 2016-12-22 | Aft Automotive Gmbh & Co. Kg | Unterdruckpumpenanordnung sowie Verfahren zum Herstellen einer Unterdruckpumpenanordnung |
DE102014008226A1 (de) * | 2014-06-11 | 2015-12-17 | Bilsing Automation Gmbh | Vakuumerzeuger nach dem Ejektorprinzip |
SE539775C2 (sv) * | 2014-06-23 | 2017-11-28 | Onishi Teknik Ab | Flerstegs vakuumejektor |
GB201418117D0 (en) | 2014-10-13 | 2014-11-26 | Xerex Ab | Handling device for foodstuff |
US10794402B2 (en) | 2017-10-31 | 2020-10-06 | General Electric Company | Ejector and a turbo-machine having an ejector |
PL426033A1 (pl) | 2018-06-22 | 2020-01-02 | General Electric Company | Płynowe pompy strumieniowe parowe, a także układy i sposoby porywania płynu przy użyciu płynowych pomp strumieniowych parowych |
US11560905B2 (en) * | 2019-12-13 | 2023-01-24 | Goodrich Corporation | Multistage aspirator for inflatable assemblies |
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US5683227A (en) * | 1993-03-31 | 1997-11-04 | Smc Corporation | Multistage ejector assembly |
US5556259A (en) * | 1995-06-06 | 1996-09-17 | Fleck Controls, Inc. | Vortex generating fluid injector assembly |
DE19727158C2 (de) * | 1997-06-26 | 2001-01-25 | Festo Ag & Co | Steuervorrichtung |
-
1999
- 1999-09-20 DE DE29916531U patent/DE29916531U1/de not_active Expired - Lifetime
-
2000
- 2000-09-20 WO PCT/EP2000/009208 patent/WO2001021961A1/de active IP Right Grant
- 2000-09-20 EP EP00962511A patent/EP1131562B1/de not_active Expired - Lifetime
- 2000-09-20 US US09/856,111 patent/US6582199B1/en not_active Expired - Fee Related
- 2000-09-20 DE DE50010514T patent/DE50010514D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1131562A1 (de) | 2001-09-12 |
US6582199B1 (en) | 2003-06-24 |
DE29916531U1 (de) | 2001-02-08 |
WO2001021961A1 (de) | 2001-03-29 |
DE50010514D1 (de) | 2005-07-14 |
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