EP1213485A2 - Vakuumerzeugervorrichtung sowie Verfahren zum Betreiben einer Vakuumerzeugervorrichtung - Google Patents
Vakuumerzeugervorrichtung sowie Verfahren zum Betreiben einer Vakuumerzeugervorrichtung Download PDFInfo
- Publication number
- EP1213485A2 EP1213485A2 EP01127994A EP01127994A EP1213485A2 EP 1213485 A2 EP1213485 A2 EP 1213485A2 EP 01127994 A EP01127994 A EP 01127994A EP 01127994 A EP01127994 A EP 01127994A EP 1213485 A2 EP1213485 A2 EP 1213485A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- suction
- ejector
- vacuum
- ejector device
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 abstract 2
- 230000004913 activation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F04F5/44—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
- F04F5/14—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
-
- 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 vacuum generator device, the has at least one ejector device with which after Jet pump principle, a negative pressure can be generated that can be tapped at a vacuum opening. Furthermore concerns the invention a method for operating such Vacuum generator device.
- a vacuum generator device known from US 4861232 contains an ejector device housed in a housing, the one with a jet nozzle and one in extension this arranged catch nozzle is equipped. Operational the ejector device is assigned to one of the jet nozzle Inlet opening with an operating pressure fluidic pressure medium, in particular compressed air, fed, which is accelerated in the jet nozzle, then enters the catch nozzle and ultimately via a the outlet opening assigned to the capture nozzle flows out to the atmosphere.
- an operating pressure fluidic pressure medium in particular compressed air
- suction flow causes the transition area between the Jet nozzle and the suction nozzle associated suction opening Suction effect, so that this suction opening as a vacuum opening Can be used, for example, with a to be evacuated Connect space, for example with the interior of the suction pad of a vacuum handling device.
- Vacuum generator devices in which several ejector devices are connected in series, that of the fed Flow medium are flowed through in succession, wherein the flow cross section of the suction flows from stage to Level increases.
- Such vacuum generators have their advantages, however, are more in one at the vacuum opening tapped higher suction volume flow than that a noticeable Increase in the achievable negative pressure would occur.
- a vacuum generator device with one that allows a negative pressure to be tapped Vacuum opening and with a first and a second Ejector device, each an inlet opening, a Have outlet opening and a suction opening and each between the inlet opening and the outlet opening of a suction effect at the associated suction opening causing first or second suction flow can flow are, the flow cross section for the first suction flow is larger than the flow cross section for the second suction flow and wherein the inlet opening of the first Ejector device forms an inlet opening leading to the Feeding in an actuating fluid that causes the first suction flow is provided, and further the suction opening the first ejector device with the outlet opening of the second ejector is connected to for generation a pressure difference causing the second suction flow to contribute, and being the vacuum opening from the suction opening of the second ejector device is formed.
- a method for Operate a vacuum generator device that includes an ejector with an inlet opening, an outlet opening and has a suction opening, wherein the ejector between the inlet opening and the outlet opening flowing through and at the suction opening Suction flow causing suction effect generated by that you connect the entrance opening with the atmosphere and applies a negative pressure to the outlet opening, wherein you create the vacuum by opening the outlet with the suction opening of another ejector device connects, whose suction flow is generated by the fact that Compressed air is fed into its inlet opening, which is under a higher operating pressure than atmospheric pressure stands.
- the vacuum generator device will operate under operating conditions used, where at the inlet opening of the second Ejector device is at atmospheric pressure, it turns out Invention as particularly advantageous. Compared to a vacuum generator device conventional construction can be found here same operating pressure and same air consumption a higher Vacuum at the suction opening used as a vacuum opening the second ejector can be achieved.
- a by-pass channel runs into which a control valve device is switched on which is either a release or interruption of the fluid connection between the two suction openings. It can then open at the beginning of an evacuation process the control valve device, the second ejector device be bridged to only towards the end of the evacuation process to close the connection and thereby the second ejector device for the purpose of obtaining the desired high Activate vacuum.
- a type with individual Actuation option may be provided, for example provide manual activation.
- the control valve device as a function of that at the vacuum opening Pressure is applied so that it is in an open position assumes as long as the negative pressure is still relatively low to only when a certain vacuum value is reached conclude.
- Each of the vacuum generator devices generally designated by reference numeral 1 contains two ejector devices that for better differentiation than first and second ejector devices 2, 2 'are designated and expediently are housed together in a housing 4.
- Each ejector device 2, 2 ' contains a jet nozzle 5, 5' with a jet nozzle channel 6, 6 'and a catch nozzle 7, 7' with a collecting nozzle channel 8, 8 '.
- the ejector devices 2, 2 ' are in the exemplary embodiment cartridge-like design and each preferably in one cylindrical ejector receptacle 12, 12 'used.
- a respective catch nozzle 7, 7 ' is downstream of the respectively assigned one Jet nozzle 5, 5 'placed.
- Each ejector device 2, 2 ' has an inlet opening 14, 14 'provided that of the opposite of the trap nozzle channel 8, 8' End region of the suction nozzle channel 6, 6 'is formed is.
- each ejector device 2, 2 ' via an outlet opening 15, 15 'which from the suction nozzle channel 6, 6 'opposite end region of the capture nozzle channel 8, 8 'is formed.
- a connecting channel 17 running inside the housing 4 provides a constant connection between the suction opening 16 the first ejector device 2 and the outlet opening 15 ' the second ejector device 2 '.
- the vacuum generator devices 1 are used in particular to generate a vacuum p U at a predetermined level in a connected space 19 to be evacuated.
- the space 19 to be evacuated can be defined, in particular, by the interior of a suction gripper 18 formed, for example, by a suction cup or a suction plate, which belongs to a vacuum handling device, with the aid of which any objects can be held and / or transported due to negative pressure.
- the suction gripper 18 In the operation of such a vacuum handling device the suction gripper 18 with its open side ahead the outer surface of the object to be handled, after which the space 19 is suctioned off and evacuated, so that a Negative pressure arises, which causes the object to adhere to the Suction pad 18 causes.
- the Suction pad 18 By subsequently handling the Suction pad 18 can be the object in any way position.
- the space 19 to be evacuated is connected to one in the housing 4 running vacuum channel 22 connected with a Vacuum opening 23 is connected, which of the Suction opening 16 'of the second ejector device 2' is formed is.
- For connection to the room 19 to be evacuated also interposed a fluid line leading away from the housing 4 his.
- the inlet opening 14 of the first ejector device 2 is designed as a feed opening 24.
- An operating fluid under a certain operating pressure p B is fed in during operation of the respective vacuum generator device 1.
- compressed air is used as the actuating fluid, the actuating pressure p B being higher than the atmospheric pressure, with normal operating conditions providing an excess pressure of 6 bar.
- the compressed air is by a not shown Compressed air generator provided and in a feed channel 25 of the housing 4 fed with the feed opening 24 of the first ejector device 2 in fluid communication stands.
- the feed channel 25 is from a length section of the receiving the first ejector device 2 Ejector receptacle 12 is formed.
- the two ejector devices 2, 2 ' are designed for the second suction flow in the second ejector device 2 'provided flow cross-section is less than that of the first suction flow available in the first ejector device 2 Flow cross section, the effect surprisingly arises that at the suction port 16 'of the second ejector 2 'formed vacuum opening 23 a relative high negative pressure can be tapped, which is considerable above a value of 0.9 that is usually achievable today bar.
- the high level of negative pressure is associated with receive an air consumption that is not greater than that Air consumption more common, equipped with only one ejector device Vacuum generator devices.
- the entry opening 14 'of the second ejector device 2' additionally under to feed compressed air at a certain overpressure, but the overpressure should be as low as possible and on in any case below the operating pressure of the via the feed opening 24 fed in printing medium has to be.
- the vacuum generator device is operated with a gas other than air.
- control valve device 27 can be activated manually. It has a valve member 28 which in Fig. 2a in a closed position is shown, in which it is on a valve seat 32 is present and thereby closes the by-pass channel. This state corresponds to that state in the exemplary embodiment 1a and 1b is always present.
- valve member 28 can in a Fig. 2b indicated open position are shifted in the the fluid passage through the by-pass channel 26 is released and thus bypassing the second ejector device 2 ' a direct connection between the two suction openings 16, 16 'is present.
- control valve device 27 instead of manual switching can also be provided be to perform the control valve device 27 so that it electrical and possibly according to an electronic one Control device is activated.
- the Control valve device 27 In order to evacuate a room of 19 large volume, the Control valve device 27 first switched to the open position, so that essentially only the first ejector device 2 is effective because of the first suction flow provided large flow cross-section is able to a high at its suction opening 16 Generate flow rate, which is a correspondingly fast Evacuation of room 19 allows. After a certain time the control valve device 27 is closed, so that automatically the second ejector device 2 'is put into operation and the remaining volume with a lower flow rate is suctioned off to a high vacuum.
- FIGS. 3a, 3b is the same as that according to Fig. 2a, 2b largely identical, with the same Components are provided with the same reference numerals. The only difference is in the way the activation of the Control valve device 27, which happens automatically here since the control valve device 27 is designed so that it as a function of that present at the vacuum opening 23 Pressure is applied.
- the valve member 28 is deactivated by a spring device 33 State of the vacuum generator device 1 in the held with the aid of FIGS. 2a, 2b.
- a fluid application surface 34 provided that constantly with the vacuum opening 23rd applied vacuum is applied, resulting in a positioning force results in the actuating force of the spring device 33 is opposite.
- the time of switching that is the negative pressure at which the Control valve device 27 from the open position in the Switched closed position
- can be variably adjustable be, for example, by using one in their Actuating force of adjustable spring device 33.
- the control valve device 27 according to FIGS. 3a, 3b comes without electrical control off. However, a design would also be possible, where the negative pressure by a pressure sensor detected and the switching of the control valve device 27 based of the sensor signal is effected.
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)
Abstract
Description
- Fig. 1a
- eine besonders einfach aufgebaute Ausführungsform der erfindungsgemäßen Vakuumerzeugervorrichtung im Längsschnitt,
- Fig. 1b
- das Schaltbild der Vakuumerzeugervorrichtung gemäß Fig. 1a,
- Fig. 2a
- eine zusätzlich mit einem manuell aktivierbaren Steuerventil ausgestattete Vakuumerzeugervorrichtung im Längsschnitt,
- Fig. 2b
- das Schaltbildung der Vakuumerzeugervorrichtung gemäß Fig. 2a,
- Fig. 3a
- eine weitere Ausführungsform der erfindungsgemäßen Vakuumerzeugervorrichtung mit einem druckabhängig aktivierbaren Steuerventil, wiederum im Längsschnitt, und
- Fig. 3b
- das Schaltbild der Vakuumerzeugervorrichtung aus Fig. 3a.
Claims (7)
- Vakuumerzeugervorrichtung, mit einer den Abgriff eines Unterdruckes ermöglichenden Unterdrucköffnung (23) und mit einer ersten und einer zweiten Ejektoreinrichtung (2, 2'), die jeweils eine Eintrittsöffnung (14, 14'), eine Austrittsöffnung (15, 15') und eine Saugöffnung (16, 16') aufweisen und die jeweils zwischen der Eintrittsöffnung (14, 14') und der Austrittsöffnung (15, 15') von einer an der zugehörigen Saugöffnung (16, 16') eine Saugwirkung hervorrufenden ersten bzw. zweiten Absaugströmung durchströmbar sind, wobei der Strömungsquerschnitt für die erste Absaugströmung größer ist als der Strömungsquerschnitt für die zweite Absaugströmung und wobei die Eintrittsöffnung (14) der ersten Ejektoreinrichtung (2) eine Einspeiseöffnung (24) bildet, die zum Einspeisen eines die erste Absaugströmung hervorrufenden Betätigungsfluides vorgesehen ist, wobei ferner die Saugöffnung (16) der ersten Ejektoreinrichtung (2) mit der Austrittsöffnung (15') der zweiten Ejektoreinrichtung (2') verbunden ist, um zur Erzeugung einer die zweite Absaugströmung bewirkenden Druckdifferenz beizutragen, und wobei die Unterdrucköffnung (23) von der Saugöffnung (16') der zweiten Ejektoreinrichtung (2') gebildet ist.
- Vakuumerzeugervorrichtung nach Anspruch 1, gekennzeichnet durch Betriebsbedingungen, bei denen der Druck des an der Eintrittsöffnung (14') der zweiten Ejektoreinrichtung (2') anstehenden Fluides geringer ist als der Druck des an der Einspeiseöffnung (24) der ersten Ejektoreinrichtung (2) eingespeisten Betätigungsfluides.
- Vakuumerzeugervorrichtung nach Anspruch 1 oder 2, gekennzeichnet durch Betriebsbedingungen, bei denen an der Einspeiseöffnung (24) als Betätigungsfluid Druckluft eingespeist wird, die unter einem im Vergleich zum Atmosphärendruck höheren Betriebsdruck steht, wobei an der Eintrittsöffnung (14') der zweiten Ejektoreinrichtung (2') unter Atmosphärendruck stehende Luft ansteht.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 1 bis 3, gekennzeichnet durch einen die beiden Saugöffnungen (16, 16') verbindenden By-pass-Kanal (26), dem eine Steuerventileinrichtung (27) zur wahlweisen Freigabe oder Unterbrechung der Verbindung zwischen den Saugöffnungen (16, 16') zugeordnet ist.
- Vakuumerzeugervorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Steuerventileinrichtung (27) als in Abhängigkeit von dem an der Unterdrucköffnung (23) anstehenden Unterdruck betätigbare Steuerventileinrichtung (27) ausgebildet ist, derart, dass sie die bei geringeren Unterdrücken offene Verbindung bei Erreichen eines vorgegebenen Unterdruckes unterbricht.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass beide Ejektoreinrichtungen (2, 2') in einem gemeinsamen Gehäuse (4) angeordnet sind.
- Verfahren zum Betreiben einer Vakuumerzeugervorrichtung, die eine Ejektoreinrichtung (2') mit einer Eintrittsöffnung (14'), einer Austrittsöffnung (15') und einer Saugöffnung (16') aufweist, wobei man die die Ejektoreinrichtung (2') zwischen der Eintrittsöffnung (14') und der Austrittsöffnung (15') durchströmende und dabei an der Saugöffnung (16') eine Saugwirkung hervorrufende Absaugströmung dadurch erzeugt, dass man die Eintrittsöffnung (14') mit der Atmosphäre verbindet und an der Austrittsöffnung (15') einen Unterdruck anlegt, wobei man den Unterdruck erzeugt, indem man die Austrittsöffnung (15') mit der Saugöffnung (16) einer weiteren Ejektoreinrichtung (2) verbindet, deren Absaugströmung man dadurch erzeugt, dass man an ihrer Eintrittsöffnung (14) Druckluft einspeist, die unter einem im Vergleich zum Atmosphärendruck höheren Betriebsdruck steht.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000161384 DE10061384B4 (de) | 2000-12-09 | 2000-12-09 | Strahlpumpenanordnung zur Erzeugung von Vakuum sowie Verfahren zum Betreiben einer solchen Strahlpumpenanordnung |
| DE10061384 | 2000-12-09 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1213485A2 true EP1213485A2 (de) | 2002-06-12 |
| EP1213485A3 EP1213485A3 (de) | 2005-10-12 |
| EP1213485B1 EP1213485B1 (de) | 2008-03-05 |
Family
ID=7666488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01127994A Expired - Lifetime EP1213485B1 (de) | 2000-12-09 | 2001-11-24 | Vakuumerzeugervorrichtung sowie Verfahren zum Betreiben einer Vakuumerzeugervorrichtung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1213485B1 (de) |
| DE (2) | DE10061384B4 (de) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2929663A1 (fr) * | 2008-04-03 | 2009-10-09 | Coval Soc Par Actions Simplifi | Generateur de vide autoregule. |
| CN103357616A (zh) * | 2013-07-04 | 2013-10-23 | 上海大学 | 一种用于收集冷镦机高温油雾霾的方法 |
| CN104438217A (zh) * | 2014-11-18 | 2015-03-25 | 玮锋电子材料(昆山)有限公司 | 除尘系统 |
| US20150308461A1 (en) * | 2012-12-21 | 2015-10-29 | Xerex Ab | Vacuum Ejector With Multi-Nozzle Drive Stage And Booster |
| CN108644157A (zh) * | 2018-07-19 | 2018-10-12 | 北京孤岛科技有限公司 | 一种负压发生器 |
| EP3056745B1 (de) * | 2015-02-12 | 2019-07-10 | J. Schmalz GmbH | Unterdruckerzeugervorrichtung und schlauchheber mit einer unterdruckerzeugervorrichtung |
| US10457499B2 (en) | 2014-10-13 | 2019-10-29 | Piab Aktiebolag | Handling device with suction cup for foodstuff |
| US10753373B2 (en) | 2012-12-21 | 2020-08-25 | Piab Aktiebolag | Vacuum ejector nozzle with elliptical diverging section |
| US10767663B2 (en) | 2012-12-21 | 2020-09-08 | Piab Aktiebolag | Vacuum ejector with tripped diverging exit flow |
| US10767662B2 (en) | 2012-12-21 | 2020-09-08 | Piab Aktiebolag | Multi-stage vacuum ejector with molded nozzle having integral valve elements |
| CN114658698A (zh) * | 2022-03-29 | 2022-06-24 | 青岛北冰洋冷暖能源科技有限公司 | 一种组合式液体引射抽真空系统及抽真空方法 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009047082A1 (de) * | 2009-11-24 | 2011-05-26 | J. Schmalz Gmbh | Druckluftbetriebener Unterdruckerzeuger |
| DE102009047089B4 (de) * | 2009-11-24 | 2012-01-26 | J. Schmalz Gmbh | Druckluftbetriebener Unterdruckerzeuger |
| DE102009047083C5 (de) * | 2009-11-24 | 2013-09-12 | J. Schmalz Gmbh | Druckluftbetriebener Unterdruckerzeuger oder Unterdruckgreifer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861232A (en) | 1987-05-30 | 1989-08-29 | Myotoku Ltd. | Vacuum generating device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB450209A (en) * | 1936-01-21 | 1936-07-13 | Alfred Reinhold Jahn | Improvements in and relating to vacuum-producing apparatus |
| US4158528A (en) * | 1973-09-12 | 1979-06-19 | Air-Vac Engineering Co., Inc. | Gas-operated vacuum transducer |
| IL59439A (en) * | 1980-02-21 | 1983-05-15 | Bron Dan | Two stage jet pump |
| JPS6155400A (ja) * | 1984-08-27 | 1986-03-19 | Shoketsu Kinzoku Kogyo Co Ltd | 真空発生装置 |
| DE19538617C2 (de) * | 1995-10-17 | 1998-03-19 | Judo Wasseraufbereitung | Doppelinjektor |
| DE19808548A1 (de) * | 1998-02-28 | 1999-09-02 | Itt Mfg Enterprises Inc | Vorrichtung zur Unterdruck-Erzeugung |
-
2000
- 2000-12-09 DE DE2000161384 patent/DE10061384B4/de not_active Expired - Fee Related
-
2001
- 2001-11-24 DE DE50113688T patent/DE50113688D1/de not_active Expired - Lifetime
- 2001-11-24 EP EP01127994A patent/EP1213485B1/de not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861232A (en) | 1987-05-30 | 1989-08-29 | Myotoku Ltd. | Vacuum generating device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2929663A1 (fr) * | 2008-04-03 | 2009-10-09 | Coval Soc Par Actions Simplifi | Generateur de vide autoregule. |
| US10767663B2 (en) | 2012-12-21 | 2020-09-08 | Piab Aktiebolag | Vacuum ejector with tripped diverging exit flow |
| US20150308461A1 (en) * | 2012-12-21 | 2015-10-29 | Xerex Ab | Vacuum Ejector With Multi-Nozzle Drive Stage And Booster |
| US10202984B2 (en) * | 2012-12-21 | 2019-02-12 | Xerex Ab | Vacuum ejector with multi-nozzle drive stage and booster |
| US10753373B2 (en) | 2012-12-21 | 2020-08-25 | Piab Aktiebolag | Vacuum ejector nozzle with elliptical diverging section |
| US10767662B2 (en) | 2012-12-21 | 2020-09-08 | Piab Aktiebolag | Multi-stage vacuum ejector with molded nozzle having integral valve elements |
| CN103357616A (zh) * | 2013-07-04 | 2013-10-23 | 上海大学 | 一种用于收集冷镦机高温油雾霾的方法 |
| US10457499B2 (en) | 2014-10-13 | 2019-10-29 | Piab Aktiebolag | Handling device with suction cup for foodstuff |
| CN104438217A (zh) * | 2014-11-18 | 2015-03-25 | 玮锋电子材料(昆山)有限公司 | 除尘系统 |
| EP3056745B1 (de) * | 2015-02-12 | 2019-07-10 | J. Schmalz GmbH | Unterdruckerzeugervorrichtung und schlauchheber mit einer unterdruckerzeugervorrichtung |
| CN108644157A (zh) * | 2018-07-19 | 2018-10-12 | 北京孤岛科技有限公司 | 一种负压发生器 |
| CN114658698A (zh) * | 2022-03-29 | 2022-06-24 | 青岛北冰洋冷暖能源科技有限公司 | 一种组合式液体引射抽真空系统及抽真空方法 |
| CN114658698B (zh) * | 2022-03-29 | 2024-04-26 | 青岛北冰洋冷暖能源科技有限公司 | 一种组合式液体引射抽真空系统及抽真空方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1213485B1 (de) | 2008-03-05 |
| DE10061384B4 (de) | 2007-01-18 |
| EP1213485A3 (de) | 2005-10-12 |
| DE50113688D1 (de) | 2008-04-17 |
| DE10061384A1 (de) | 2002-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE10019472B4 (de) | Reinigungsvorrichtung | |
| EP1213485B1 (de) | Vakuumerzeugervorrichtung sowie Verfahren zum Betreiben einer Vakuumerzeugervorrichtung | |
| DE102007059530B4 (de) | Vakuumsaugvorrichtung | |
| EP1299649B1 (de) | Vakuumerzeugervorrichtung | |
| DE2339127C3 (de) | Vorrichtung zum Sprühbeschichten | |
| EP0043566A1 (de) | Ejektorvorrichtung | |
| EP1288504B1 (de) | Vakuumerzeugervorrichtung | |
| DE102009007800A1 (de) | Aerosol-Drucker, dessen Verwendung und Verfahren zur Herstellung von Linienunterbrechungen bei kontinuierlichen Aerosol-Druckverfahren | |
| WO2003015929A1 (de) | Dralldruck-düse | |
| DE10250532B3 (de) | Treibgas betriebene Ejektoranordnung | |
| DE10036045C1 (de) | Vakuumerzeugervorrichtung | |
| DE10394269T5 (de) | Schaltventilanordnung | |
| DE2829783A1 (de) | Einrichtung zum unterteilen eines fluessigkeitsstromes durch gasblasen | |
| DE10009167B4 (de) | Luftspareinrichtung für eine Saugvorrichtung | |
| DE10341046B4 (de) | Vakuumsaugvorrichtung und Betriebsverfahren hierfür | |
| DE3313645C1 (de) | Den Betriebsunterdruck fuer Melkanlagen automatisch regelendes Ventil | |
| DE19935810A1 (de) | Drucklufterzeuger | |
| DE3933254A1 (de) | Pneumatisches, mit unterdruck arbeitendes system | |
| DE3127775A1 (de) | "betriebsbremsbeschleuniger fuer schienenfahrzeug-druckluftbremsanlagen" | |
| DE4335076C2 (de) | Druckregelvorrichtung für ein blockiergeschütztes und antriebsschlupfgeregeltes Fahrzeugbremssystem | |
| EP0894753A1 (de) | Vakuumsystem für ein Transfersystem | |
| DE3147030C2 (de) | Magnetventileinheit | |
| DE3120535A1 (de) | Vorrichtung zu steuern des antriebs und der wasserzufuhr fuer ein dental-luftturbinenhandstuecks | |
| DE1673609A1 (de) | Einrichtung zur Druck-und Leistungsverstaerkung von als Luft-oder Gasdruck vorliegenden pneumatischen Signalen | |
| EP1512920B1 (de) | Luftbefeuchtungsvorrichtung |
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 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7F 04F 5/20 B Ipc: 7F 04F 5/22 B Ipc: 7F 04F 5/52 A |
|
| 17P | Request for examination filed |
Effective date: 20060105 |
|
| AKX | Designation fees paid |
Designated state(s): DE FR GB IT SE |
|
| 17Q | First examination report despatched |
Effective date: 20060714 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| 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 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 50113688 Country of ref document: DE Date of ref document: 20080417 Kind code of ref document: P |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20080417 |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080605 |
|
| 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 |
Effective date: 20081208 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20101123 Year of fee payment: 10 Ref country code: GB Payment date: 20101105 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20111125 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20121012 Year of fee payment: 12 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20121124 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20130731 |
|
| 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 Effective date: 20121124 |
|
| 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: 20121130 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121124 |
|
| 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 NON-PAYMENT OF DUE FEES Effective date: 20140603 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50113688 Country of ref document: DE Effective date: 20140603 |