EP0654124B1 - Ejektorpumpe - Google Patents
Ejektorpumpe Download PDFInfo
- 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
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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
-
- 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)
- Saccharide Compounds (AREA)
Description
- Fig. 1
- eine erfindungsgemäße vierstufige Ejektorpumpe in Schnittansicht (Schnitt quer durch den Strömungskanal und entlang der Hauptströmungsrichtung im Strömungskanal);
- Fig. 2
- von der Ejektorpumpe nach Fig. 1 eine perspektivische Darstellung eines Systems von Profilen und Trennwänden;
- Fig. 3
- für eine alternative Ausführungsform einer mehrstufigen Ejektorpumpe mit kreisringförmigem, nach radial außen gerichtetem Strömungskanal ein System von Profilen und Trennwänden (in Axialrichtung gesehen);
- Fig. 4
- eine perspektivische Darstellung eines einstückig im Spritzgußverfahren herstellbaren Ejektorpumpenmoduls für eine dreistufige Flachkanalejektorpumpe;
- Fig. 5
- eine perspektivische Darstellung eines anderen Ejektorpumpenmoduls für eine vierstufige Radialejektorpumpe sowie
- Fig. 6
- eine perspektivische Darstellung eines Radialejektorpumpensegments, bei welchem aus Gründen der Übersichtlichkeit auf die Darstellung des Gehäuses verzichtet wurde.
Erstens geben sie den Profilen 1 bis 3 Halt und verhindern deren Schwingen unter dem Einfluß der sich im Strömungskanal ausbildenden Strömungswirbel.
Zweitens kann mit ihnen auch das Gehäuse 5 mechanisch stabilisiert werden.
Drittens vermindern sie die Ausbreitung der Strömungswirbel in den Mischzonen und verkürzen damit die erforderliche, in Strömungsrichtung gesehene Strömungskanallänge. Sie verbessern daher auch bereits ohne das Vorhandensein der senkrecht zu ihnen orintierten Profile 1 bis 3 die Strömungsverhältnisse im Sinne der Erfindung und sind als solche auch allein verwendbar.
- 1
- Profil
- 2
- Profil
- 3
- Profil
- 4
- Trennwand
- 5
- Ejektorgehäuse
- 5A
- Gehäuseteil
- 5B
- Gehäuseteil
- 5C
- Gehäuseteil
- 6
- Eintrittskammer
- 7
- Saugkammer
- 8
- Saugkammer
- 9
- Saugkammer
- 10
- Saugkammer
- 15
- Einlaß (Treibmedium)
- 16
- Einlaß (Stoff-Gemisch)
- 17
- Strömungskanal
- 17A
- Strömungskanalwand
- 17B
- Strömungskanalwand
- 17C
- Längsmittelebene
- 18
- Düse
- 19
- Mischzone
- 20
- Diffusor
- 21
- Durchtrittsspalt
- 22
- Auslaß
- 23
- Saugkammer
- 24
- Durchbrechungen
- 25
- Führungsbolzen
- 26
- Endwand
- 100
- Ejektorpumpe
- 50
- Ejektorpumpenmodul
- 60
- Ejektorpumpenmodul
- 70
- Ejektorpumpe
- 27
- Kammer
- A
- Hauptströmungsrichtung
- B
- Trennlinie
Claims (12)
- Ejektorpumpen zum Saugen und/oder Fördern strömungsfähiger Stoffe oder Stoffgemische mit Hilfe eines fluiden Treibmediums mit einem Gehäuse (5),mit mindestens einem Einlaß (15) für das Treibmedium,mit mindestens einem Einlaß (16,16') für den/das strömungsfähige/n Stoff oder Stoffgemisch,mit mindestens einem Strömungskanal (17) für die Mischung und gemeinsame Durchströmung von Treibmedium und strömunngsfähigem Stoff oder Stoffgemisch mit mindestens einer Düse (18), mindestens einer Mischzone (19) und mindestens einem Diffusor (20),mit mindestens einer Saugkammer (7,7',8,8',9,9',10,10'), die mit dem Einlaß (16,16') für den/das strömungsfähige/n Stoff oder Stoffgemisch einerseits und mit dem Strömungskanal (17) über einen Durchtrittsspalt (21,21') andererseits fluidisch verbunden ist, undmit mindestens einem gemeinsamen Auslaß (22) für das Treibmedium und dem/das strömungsfähige/n Stoff oder Stoff-gemisch
mindestens ein im Strömungskanal (17) angeordnetes, einen Oberflächenbereich mit einer auf den ursprünglichen Strömungsweg hin gerichteten Oberflächen komponente aufweisendes Profil (1,1',2,2',3,3'), welches das auf das Profil (1,1',2,2',3,3') selbst zuströmende Fluid verdrängt und es mit einer seitlichen Richtungskomponente aus dem ursprünglichen Strömungsweg herausleitet, so daß das Fluid im Mittel näher an eine den Strömungskanal (17) seitlich begrenzende Strömungskanalwand (17a, 17b) herangelangt. - Ejektorpumpe nach Anspruch 1, dadurch gekennzeichnet, daß das mindestens eine Strömungsleitprofil ein längliches Profil (1,1',2,2',3,3') ist und sich mit seiner Längserstreckungsrichtung etwa senkrecht zur Erstreckungsrichtung des Strömungskanals (17) und damit etwa senkrecht zur Hauptströmungsrichtung des Fluides im Strömungskanal erstreckt.
- Ejektorpumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Profile (1,1',2,2',3,3') im Querschnitt symmetrisch sind.
- Ejektorpumpe nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Stelle des durch das Profil (1,1',2,2',3,3') bedingten engsten Querschnitts des Strömungskanals (17) im Bereich des mindestens einen Durchtrittsspaltes (21; 24) für den/das strömungsfähige/n Stoff oder Stoffgemisch, insbesondere unmittelbar stromauf des Durchtrittsspaltes liegt.
- Ejektorpumpe nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß bei in Strömungsrichtung hintereinander angeordneten Profilen (1,1',2,2',3,3') der Profilquerschnitt in Strömungsrichtung von Profil zu Profil zunimmt.
- Ejektorpumpe nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß zumindest eines der Profile (1,1',2,2',3,3') innen hohl und einerseits mit dem Strömungskanal (17) und andererseits mit einem Einlaß (16) für den/das strömungsfähige/n Stoff oder Stoffgemisch fluidisch verbunden ist.
- Ejektorpumpe zum Saugen und/oder Fördern strömungsfähiger Stoffe oder Stoffgemische mit Hilfe eines fluiden Treibmediums mit einem Gehäuse (5),mit mindestens einem Einlaß (15) für das Treibmedium,mit mindestens einem Einlaß (16,16') für den/das strömungsfähige/n Stoff oder Stoffgemisch,mit mindestens einem Strömungskanal (17) für die Mischung und gemeinsame Durchströmung von Treibmedium und strömungsfähigem Stoff oder Stoffgemisch mit mindestens einer Düse (18), mindestens einer Mischzone (19) und mindestens einem Diffusor (20),mit mindestens einer Saugkammer (7,7',8,8',9,9',10,10'), die mit dem Einlaß (16,16') für den/das strömungsfähige/n Stoff oder Stoffgemisch einerseits und mit dem Strömungskanal (17) über einen Durchtrittsspalt (21,21') andererseits fluidisch verbunden ist, undmit mindestens einem gemeinsamen Auslaß (22) für das Treibmedium und dem/das strömungsfähige/n Stoff oder Stoff-gemisch
mindestens eine im Strömungskanal (17) angeordnete, längliche Trennwand (4), die sich mit ihrer Längserstreckungsrichtung etwa parallel zur Erstreckungsrichtung des Strömungskanals (17) und damit etwa parallel zur Hauptströmungsrichtung des Fluides im Strömungskanal (17) erstreckt und den Strömungskanalquerschnitt in Strömungsteilkanäle (17', 17'', 17''', ...) unterteilt. - Ejektorpumpe nach Anspruch 7, dadurch gekennzeichnet, daß sich die Dicke der Trennwand (4) in Erstreckungsrichtung des Strömungskanals (17) verjüngt.
- Ejektorpumpe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet daß ein einen Strömungskanal (17), eine Eintrittskammer (6), mindestens eine Saugkammer (7, 8, 9, 10, 23), eine Trennwand (4) und gegebenenfalls Profile (1,1',2,2',3,3') umfassendes Ejektorgehäuse als Ejektorpumpenmodul hergestellt ist.
- Ejektorpumpe nach Anspruch 9, dadurch gekennzeichnet, daß die Ejektorpumpenmodule einstückig sind.
- Ejektorpumpe nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß sie durch Zusammenfügen von Ejektorpumpenmodulen hergestellt ist.
- Ejektorpumpe nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß jeweils eine Trennwand (4) auf einer oder beiden Seitenflächen mit Profilen (1,1',2,2',3,3') versehen ist.
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 (de) | 1992-08-06 | 1993-08-05 | Ejektorpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0654124A1 EP0654124A1 (de) | 1995-05-24 |
EP0654124B1 true EP0654124B1 (de) | 1998-01-21 |
Family
ID=6882380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93917750A Expired - Lifetime EP0654124B1 (de) | 1992-08-06 | 1993-08-05 | Ejektorpumpe |
Country Status (6)
Country | Link |
---|---|
US (2) | US5593284A (de) |
EP (1) | EP0654124B1 (de) |
JP (1) | JP2920421B2 (de) |
DE (2) | DE9210497U1 (de) |
TW (1) | TW245758B (de) |
WO (1) | WO1994003732A1 (de) |
Families Citing this family (12)
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 |
GB2509183A (en) * | 2012-12-21 | 2014-06-25 | Xerex Ab | Vacuum ejector with tripped diverging exit flow nozzle |
GB2509184A (en) | 2012-12-21 | 2014-06-25 | Xerex Ab | Multi-stage vacuum ejector with moulded nozzle having integral valve elements |
WO2014094890A1 (en) * | 2012-12-21 | 2014-06-26 | Xerex Ab | Vacuum ejector nozzle with elliptical diverging section |
GB2509182A (en) | 2012-12-21 | 2014-06-25 | Xerex Ab | Vacuum ejector with multi-nozzle drive stage and booster |
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)
Publication number | Priority date | Publication date | Assignee | Title |
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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, 59514 Welver | Mehrstufige Ejektorpumpe |
DE4225956A1 (de) * | 1992-08-06 | 1994-02-17 | Thilo Volkmann | Mehrstufige Ejektorpumpe sowie Verfahren und Werkzeug zu ihrer Herstellung |
-
1992
- 1992-08-06 DE DE9210497U patent/DE9210497U1/de not_active Expired - Lifetime
-
1993
- 1993-08-05 WO PCT/EP1993/002084 patent/WO1994003732A1/de active IP Right Grant
- 1993-08-05 EP EP93917750A patent/EP0654124B1/de not_active Expired - Lifetime
- 1993-08-05 DE DE59308050T patent/DE59308050D1/de not_active Expired - Lifetime
- 1993-08-05 JP JP6507558A patent/JP2920421B2/ja not_active Expired - Fee Related
- 1993-08-11 TW TW082106444A patent/TW245758B/zh active
-
1996
- 1996-02-23 US US08/605,704 patent/US5593284A/en not_active Expired - Fee Related
- 1996-07-19 US US08/684,181 patent/US5810563A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59308050D1 (de) | 1998-02-26 |
JP2920421B2 (ja) | 1999-07-19 |
DE9210497U1 (de) | 1993-12-09 |
US5593284A (en) | 1997-01-14 |
EP0654124A1 (de) | 1995-05-24 |
US5810563A (en) | 1998-09-22 |
TW245758B (de) | 1995-04-21 |
WO1994003732A1 (de) | 1994-02-17 |
JPH08507345A (ja) | 1996-08-06 |
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