EP1288504A1 - Vakuumerzeugervorrichtung - Google Patents
Vakuumerzeugervorrichtung Download PDFInfo
- Publication number
- EP1288504A1 EP1288504A1 EP01120843A EP01120843A EP1288504A1 EP 1288504 A1 EP1288504 A1 EP 1288504A1 EP 01120843 A EP01120843 A EP 01120843A EP 01120843 A EP01120843 A EP 01120843A EP 1288504 A1 EP1288504 A1 EP 1288504A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- channel
- outflow
- vacuum generator
- generator 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
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Classifications
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- 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
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- 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
- F04F5/461—Adjustable nozzles
Definitions
- the invention relates to a vacuum generator device with at least one ejector device, the one jet nozzle, one the trap nozzle downstream of the jet nozzle and one in the transition area defined between the jet nozzle and the capture nozzle Has suction zone, at the outlet end the catch nozzle a collecting space for the flowing through the catch nozzle Fluid is provided, of which an outflow channel comes off, and with means for influencing the fluid flow through the outflow channel.
- Such a vacuum generator device is known from DE 4302951 C1 in their housing following the outlet side Arranged at the end of the trap nozzle is that catches the fluid emerging from the catch nozzle and from which the fluid flows through an adjoining outflow channel can flow through to the atmospheric environment.
- the Collection chamber serves to guide a movable piston, the optionally between an open position releasing the outflow channel and one that completely closes the outflow channel The closed position can be positioned. To in the suction zone To get a vacuum, the piston takes the open position on and allows an unhindered outflow of the the fluid emerging from the catch nozzle. If the piston in the Positioned in the closed position, that flowing through the catching nozzle Fluid redirected to the suction zone, where there is negative pressure degrades.
- Vacuum generator devices are often used to handle Objects used, one in connection with the suction zone standing suction channel leads to a suction pad that can be attached to an object to be handled. Around to fix the object to the suction cup is in the suction channel generates a suitably high vacuum. For the new one The vacuum is released again when the object is released.
- this is Task solved by throttling means for variable specification of the fluid volume flow flowing out via the outflow channel to Purposes of influencing the prevailing in the reception area Pressure.
- throttling means are thus provided which are variable Allow specification of the fluid volume flow.
- Setting results in the exit end of the Collecting space associated with the catch nozzle has a different height Pressure that a more or less large back pressure of the through fluid flowing through the trap nozzle. It was recognized that by influencing the Fluid flow passing through the catch nozzle varies as required Working pressures are provided in the extraction zone can be dependent on, for example, a vacuum reduction on the type of objects to be handled or in To be able to carry out depending on the location.
- the nominal outlet diameter (d A ) measured at the point of the narrowest cross section of the outflow duct should be larger than that at the point of the narrowest cross section of the jet nozzle duct measured jet nozzle channel nominal diameter (d S ), but is smaller than the nominal nozzle nozzle diameter (d F ) measured at the point of the narrowest cross-section of the collecting nozzle channel.
- This diameter adjustment also has its advantages even if as a means of influencing the fluid flow no throttling means are provided by the outflow channel are, for example, simple shut-off devices, which, in the manner of a digital behavior, optionally a maximum Release or complete closure of the outflow channel enable.
- the throttling means can be designed that they have a gradual variation in the fluid volume flow allow.
- a design is considered to be more advantageous in which a continuous variation through the throttling means of the fluid volume flow is possible, which is an optimal Specification of the working pressure in the suction zone enables.
- the throttle means expediently contain a reference of the outflow channel can be positioned in different throttle positions Control member.
- the control element is particular associated with an outflow opening of the outflow channel at the end region of the outflow channel opposite the collecting space is located, for example outside the outflow channel.
- the control element can be the outflow opening of the outflow channel be arranged opposite one another.
- a particularly simple variation of the throttling intensity is possible if the control element depends on the selected throttle position more or less far from the outflow opening is spaced.
- An outflow nozzle can be provided to define the outflow opening be, in the case of a replaceable arrangement there is the possibility of alternatively discharge nozzles with different Use cross-sectional dimensions.
- the control element is part of a continuous mode executed, electrically operated actuator, can the desired volume flow and thus the target in the collecting room Pressure can be specified particularly easily and precisely.
- the adjusting device is expediently a proportional actuator.
- the principle of operation the actuator is based in particular on electromagnetic and / or on piezoelectric principles of action.
- the vacuum generator device for operation is equipped with compressed air as the associated fluid, it is advisable to design the outflow channel so that it to the atmospheric environment.
- the designs of the vacuum generator device according to the invention also create the possibility of the course of the outflow channel and the placement of the outflow opening without any particular constraints make. This allows the structural conditions of the vacuum generator device and especially the circumstances can be easily taken into account on site. It exists in particular the possibility to find one related to Longitudinal direction of the catching nozzle in the same direction or Realize outgoing course of the outflow channel.
- the outflow opening can be placed on the side to the length dimensions of the vacuum generator device to keep low.
- Controlled and / or regulating means can be a controlled or regulated specification of the prevailing in the extraction zone Working pressure. For example, by a corresponding regulation can be achieved that any one Desired working pressure can be specified regardless of the location of the vacuum generator device, for example regardless of the prevailing air pressure, can be provided constantly.
- the vacuum generator device It is recommended when designing the vacuum generator device also choose the dimensions of the collecting space so that one is at the exit end of the trap nozzle forming supersonic flow zone not through the boundary walls of the collecting room is hindered. This can be a very good efficiency can be guaranteed.
- the vacuum generator device designated in its entirety by reference number 1 contains at least one vacuum generator unit 2, which is equipped with at least one ejector device 3 which can create a negative pressure.
- the ejector device 3 is in one Housing 4 of the vacuum generator unit 2 housed. She contains a jet nozzle 5 and a catch nozzle arranged after it 6. Jet nozzle 5 and catch nozzle 6 are in the embodiment independent components, but also without further ado could be designed as a structural unit, for example as cartridge-like unit.
- the jet nozzle 5 is penetrated by a jet nozzle channel 7.
- a collecting nozzle channel extends through the collecting nozzle 6 8, preferably in a coaxial orientation to the jet nozzle channel 7th
- the vacuum generator device 1 In operation of the vacuum generator device 1 is in the ejector 3 through the inlet opening 12 of the jet nozzle channel 7 through a standing under a feed pressure Fluid fed.
- the feed pressure can, for example, in the Order of magnitude of 5 bar.
- the fluid is preferably a gaseous fluid and in particular to compressed air.
- the fed-in fluid flows through the jet nozzle channel 7, the cross section of which decreases in the flow direction 13 indicated by an arrow.
- the diameter of the jet nozzle channel 7 measured at the point of the narrowest cross section 14 will be referred to as the nominal nozzle nozzle diameter d S.
- the catching nozzle channel 8 After passing through the jet nozzle channel 7, the fluid flows into the catching nozzle channel 8 via an inlet opening 15, flows through it in the axial direction and exits the catching nozzle channel 8 on the opposite side via the outlet opening 16.
- the catching nozzle channel 8 has a point of the narrowest cross section 17 which is assigned to the inlet opening 15, the diameter present there being referred to as the nominal nozzle nozzle diameter d F. Starting at the point of the narrowest cross section 17, the cross section of the catch nozzle channel 8 increases up to the outlet opening 16, the diameter measured there being referred to as the catch nozzle channel exit diameter D 1 .
- the inlet opening 15 of the trap nozzle channel 8 is in the Flow direction 13 at a distance from the outlet opening 11 of the Jet nozzle channel 7 arranged. That way in the transition area between the jet nozzle 5 and the capture nozzle 6, a zone designated as a suction zone 21, which has a suction channel 22 leading out of the housing 4 in connection stands.
- a collecting space 23 for the through the catching nozzle 6th flowing fluid is located in the housing 4 of the vacuum generator unit 2 a collecting space 23 for the through the catching nozzle 6th flowing fluid.
- An outflow channel 24 extends from this from which penetrates the wall of the housing 4 and preferably to the atmospheric environment of the vacuum generator unit 2 opens.
- the suction pad 25 contains, for example, one or more Suction cups or suction plates with at least one suction opening 27, with this suction opening 27 ahead of a manageable one and, for example, an item to be lifted can be. Due to the suction effect of the ejector device 3, a vacuum is also formed in the suction pad 25 which leads to the object in question sticking and can be lifted up, for example.
- the fluid emerging from the catch nozzle channel 8 at the end can expand in the subsequent collecting space 23 and then flows through the outflow channel 24 to Atmosphere.
- Means are associated with the outflow channel 24 with which the fluid flow possible through the outflow channel 24 can be influenced.
- These in their generality in the drawing influencing means designated by reference numeral 28 are preferably designed as throttling means 29 with which a variable specification of the outflow via the outflow channel 24 Fluid volume flow is possible.
- the throttling takes place expediently at an outflow opening 32 which defines the narrowest cross section of the outflow channel 22, which is referred to as the outflow duct nominal diameter d A , and which is expediently located at the outer end region of the outflow duct 24 opposite the collecting space 23.
- the throttling intensity currently set there is a variable discharge pressure within the collecting space 23.
- the level of the discharge pressure affects the Fluid flow in the trap nozzle channel 8 by increasing with increasing Height an increasing backflow of fluid flow in the Catch nozzle channel 8 causes. This reduces the Throughput through the trap nozzle channel 8 and consequently also in the suction zone 21 currently prevailing working pressure.
- the in Suction pad 25 prevailing working pressure increased.
- This pressure increase can by appropriate actuation of the throttle means 29 are caused.
- the working pressure of maximum height arises when comparable by the throttling means 29 a shut-off valve, the outflow opening 32 and thus the Outflow channel 24 is completely closed. All over the jet nozzle 5 inflowing amount of fluid is then on the Suction zone 21 passed to the suction pad 25. It turns up there an overpressure fluid pulse, which is a shedding of the hitherto still attached object.
- variable setting of the throttle means 29 furthermore the possibility of changing the discharge pressure between the minimum pressure value prevailing with minimal throttling effect and the prevailing when the outflow channel 24 is completely closed variable maximum pressure value. This happens simply by appropriately throttling the through the outflow channel 24 flowing fluids.
- the working pressure prevailing in the suction zone 21 is variable to be specified as required and especially those for filing an object raised by the suction pad 25 Adjust pressure increase to an optimal value. In this way, for example, the size and weight the objects to be handled are taken into account. you can prevent a relatively light object, for example a printed circuit board that is ejected too strongly, and therefore gentle handling of the objects is possible.
- the throttle means 29 contain in the embodiment with respect to the outflow channel 24 in different throttle positions positionable control element 33. Due to the positionability the relative position between the control member 33 and that at the outer end of the outflow channel 24 lying discharge opening 32 vary.
- the control member 33 is expediently located in the outflow opening 32 in the outflow direction indicated by an arrow 34 directly opposite. Depending on the selected throttle position this results in a more or less large distance between the Control member 33 from the outflow opening 32.
- the control member acts as a backlog.
- the embodiment shows a construction in which the Control element 33 from the piezo bending element one on piezoelectric Operating principle based actuator 35 is formed is.
- the control member 33 preferably stepless in Can be positioned in any position between two extreme positions is.
- One extreme position comes from the drawing , here the control member 33 is at most from the outflow opening 32 spaced and influences the outflowing Fluid not or only to a small extent.
- the control member 33 is deflected so far that it completely covers the outflow opening 32, the outflow opening 32 if necessary enclosed by a valve seat can be to ensure a reliable seal.
- outflow opening 32 is from an outflow nozzle 36 is defined.
- This outflow nozzle 36 is expedient a separate with respect to the housing 4 and is in particular interchangeably attached to the housing 4.
- the vacuum generator unit 2 can optionally be equipped with outflow nozzles 36 of different nominal discharge channel diameters d A , in order to be able to make a certain adjustment to the possible vacuum output of the ejector device 3.
- the outflow channel 24 contains one the housing 4 penetrating inner channel section, the inside opens to the collecting chamber 23 and on its outer end the outflow nozzle 36 is attachable, the outer channel section including the outflow opening 32 of the outflow channel 24 defined.
- the adjusting device 35 expediently in continuous mode executed.
- it is a proportional actuator in which the Deflection of the control member 33 proportional to the applied Control voltage changes.
- the outlet channel nominal diameter d A is designed such that it is on the one hand larger than the nominal nozzle nozzle diameter d S and on the other hand smaller than the nominal nozzle channel diameter d F.
- the nominal discharge duct diameter A is expediently only slightly larger than the nominal nozzle diameter duct D S.
- the nominal discharge duct diameter d A is expediently chosen to be significantly smaller than the nominal nozzle duct diameter d F.
- the catch nozzle channel outlet diameter D 1 is expediently larger than the three nominal diameters d S , d F or d A mentioned above in all circumstances.
- the discharge channel based on the Longitudinal direction of the catch nozzle 6, for example rectified depart. If a short construction method is sought, the Outflow channel 24, for example as shown in the drawing, go to the side and especially one sideways outflow opening oriented with respect to the longitudinal axis of the catching nozzle 6 32 have.
- the vacuum generator device 1 is preferably with control and / or Control means 37 equipped with an actuation the throttling means 29 depending on that in the suction zone 21 allow prevailing working pressure.
- the control and / or regulating means 37 expediently have via a first pressure sensor 38 through which the prevailing working pressure in the suction zone 21 is detected and the pressure signals, preferably of an electrical type, as actual values to a control unit 41.
- the control unit 41 then, after comparing the actual values with a given one Setpoint, suitable electrical control signals to the Actuator 35 from.
- the transmission of the control signals is indicated in the drawing at 42.
- the setpoints can expediently be variably specified, which is illustrated at 43 is.
- control unit 41 In a possible mode of operation is sent to the control unit 41 - this can be a conventional controller - the desired one Setpoint created.
- the control unit 41 ensures then via appropriate control of the control element 33, that the fluid is available in the region of the outflow channel 24 standing outflow cross section dynamically changed is that the desired working pressure is established. This Working pressure is so high that an object is safe from the Suction pad 25 is taken.
- control and / or regulating means 37 contain a second pressure sensor 44, which in the collecting space 23 prevailing pressure recorded and corresponding Pressure signals transmitted to the control unit 41.
- the ejector 3 can either for subsonic flow or be designed for supersonic flow.
- a Design for supersonic flow it is recommended to choose the dimensions of the collecting space 23 so that a supersonic flow zone forming at the outlet end of the trap nozzle 6 45 no hindrance from the boundary walls of the collecting space 23 experiences.
- the Length measured in the longitudinal direction of the collecting nozzle channel 8 of the collecting space 23 selected so that the supersonic flow zone 45 in front of the outlet opening 16 of the trap nozzle channel 8 opposite boundary wall 46 ends.
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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)
- Motor Or Generator Cooling System (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
Claims (18)
- Vakuumerzeugervorrichtung, mit mindestens einer Ejektoreinrichtung (3), die eine Strahldüse (5), eine der Strahldüse (5) nachgeordnete Fangdüse (6) sowie eine im Übergangsbereich zwischen der Strahldüse (5) und der Fangdüse (6) definierte Absaugzone (21) aufweist, wobei am austrittsseitigen Ende der Fangdüse (6) ein Auffangraum (23) für das durch die Fangdüse (6) hindurchströmende Fluid vorgesehen ist, von dem ein Abströmkanal (24) abgeht, und mit Mitteln zur Beeinflussung der Fluidströmung durch den Abströmkanal (24), gekennzeichnet durch Drosselmittel (29) zur variablen Vorgabe des über den Abströmkanal (24) abströmenden Fluid-Volumenstromes zum Zwecke einer Beeinflussung des im Auffangraum (23) herrschenden Druckes.
- Vakuumerzeugervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Drosselmittel (29) zur stufenlosen Variation des Fluid-Volumenstromes ausgebildet sind.
- Vakuumerzeugervorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Drosselmittel (29) ein bezüglich des Absperrkanals (24) in unterschiedlichen Drosselstellungen positionierbares Steuerglied (33) enthalten.
- Vakuumerzeugervorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Steuerglied einer Abströmöffnung (32) des Abströmkanals (24) zugeordnet ist, wobei sich die Abströmöffnung (32) zweckmäßigerweise an dem dem Auffangraum (23) entgegengesetzten Endbereich des Abströmkanals (24) befindet.
- Vakuumerzeugervorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das Steuerglied (33) der Abströmöffnung (32) des Abströmkanals (24) gegenüberliegt.
- Vakuumerzeugervorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das Steuerglied (33) je nach gewählter Drosselstellung mehr oder weniger weit von der Abströmöffnung (32) beabstandet ist.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Abströmöffnung (32) von einer Abströmdüse (36) definiert ist, die zweckmäßigerweise auswechselbar ausgeführt ist.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass das Steuerglied (33) Bestandteil einer in Stetig-Betriebsweise ausgeführten, elektrisch betätigten Stellvorrichtung (35) ist, insbesondere einer Proportional-Stellvorrichtung.
- Vakuumerzeugervorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Stellvorrichtung (35) auf elektromagnetischem und/oder piezoelektrischem Funktionsprinzip basiert.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Abströmkanal (24) zur atmosphärischen Umgebung geführt ist.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Abströmkanal (24), bezogen auf die Längsrichtung der Fangdüse (6), gleichgerichtet oder zur Seite hin abgeht.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 1 bis 11, gekennzeichnet durch Steuerungs- und/oder Regelungsmittel (37) zur Betätigung der Drosselmittel (29) in Abhängigkeit von dem in der Absaugzone (21) herrschenden Druck.
- Vakuumerzeugervorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Steuerungs- und/oder Regelungsmittel (37) einen zur Erfassung des in der Absaugzone (21) herrschenden Druckes dienenden Drucksensor (38) und zweckmäßigerweise einen weiteren Drucksensor (44) zur Erfassung des in dem Auffangraum (23) herrschenden Druckes enthält.
- Vakuumerzeugervorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die Abmessungen des Auffangraumes (23) so gewählt sind, dass eine sich am austrittsseitigen Ende der Fangdüse (6) ausbildende Überschallströmungszone (45) keine Behinderung durch die Begrenzungswände (46) des Auffangraumes (23) erfährt.
- Vakuumerzeugervorrichtung, mit mindestens einer Ejektoreinrichtung (3), die eine Strahldüse (5), eine der Strahldüse (5) nachgeordnete Fangdüse (6) sowie eine im Übergangsbereich zwischen der Strahldüse (5) und der Fangdüse (6) definierte Absaugzone (21) aufweist, wobei am austrittsseitigen Ende der Fangdüse (6) ein Auffangraum (23) für das durch die Fangdüse (6) hindurchströmende Fluid vorgesehen ist, von dem ein Abströmkanal (24) abgeht, und mit Mitteln zur Beeinflussung der Fluidströmung durch den Abströmkanal (24), insbesondere nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass der an der Stelle des engsten Querschnitts des Abströmkanals (24) gemessene Abströmkanal-Nenndurchmesser (dA) größer ist als der an der Stelle des engsten Querschnitts des Strahldüsenkanals (7) gemessene Strahldüsenkanal-Nenndurchmesser (dS) und kleiner ist als der an der Stelle des engsten Querschnitts des Fangdüsenkanals (8) gemessene Fangdüsenkanal-Nenndurchmesser (dF).
- Vakuumerzeugervorrichtung nach Anspruch 15, dadurch gekennzeichnet, dass der Abströmkanal-Nenndurchmesser (dA) nur geringfügig größer ist als der Strahldüsenkanal-Nenndurchmesser (dS).
- Vakuumerzeugervorrichtung nach Anspruch 15 oder 16, dadurch gekennzeichnet, dass der Abströmkanal-Nenndurchmesser (dA) kleiner ist als der Fangdüsenkanal-Austrittsdurchmesser (D1).
- Vakuumerzeugervorrichtung nach einem der Ansprüche 15 bis 17 und in Verbindung mit einem oder mehreren Merkmalen der Ansprüche 1 bis 14.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT01120843T ATE363029T1 (de) | 2001-08-30 | 2001-08-30 | Vakuumerzeugervorrichtung |
EP01120843A EP1288504B1 (de) | 2001-08-30 | 2001-08-30 | Vakuumerzeugervorrichtung |
ES01120843T ES2283363T3 (es) | 2001-08-30 | 2001-08-30 | Dispositivo generador de vacio. |
DE50112524T DE50112524D1 (de) | 2001-08-30 | 2001-08-30 | Vakuumerzeugervorrichtung |
US10/231,406 US6851936B2 (en) | 2001-08-30 | 2002-08-29 | Vacuum producing device |
JP2002251177A JP2003083300A (ja) | 2001-08-30 | 2002-08-29 | 真空製造装置 |
CN02132122.1A CN1280549C (zh) | 2001-08-30 | 2002-08-30 | 抽真空装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01120843A EP1288504B1 (de) | 2001-08-30 | 2001-08-30 | Vakuumerzeugervorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1288504A1 true EP1288504A1 (de) | 2003-03-05 |
EP1288504B1 EP1288504B1 (de) | 2007-05-23 |
Family
ID=8178473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01120843A Expired - Lifetime EP1288504B1 (de) | 2001-08-30 | 2001-08-30 | Vakuumerzeugervorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US6851936B2 (de) |
EP (1) | EP1288504B1 (de) |
JP (1) | JP2003083300A (de) |
CN (1) | CN1280549C (de) |
AT (1) | ATE363029T1 (de) |
DE (1) | DE50112524D1 (de) |
ES (1) | ES2283363T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005025208A1 (de) * | 2005-05-25 | 2006-11-30 | Festo Ag & Co. | Vakuumerzeugervorrichtung |
DE102016215027A1 (de) * | 2016-08-11 | 2018-02-15 | Robert Bosch Gmbh | Brennstoffzellenvorrichtung |
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US6820325B2 (en) * | 2002-10-17 | 2004-11-23 | Delaware Capital Formation, Inc. | Integrated air flow control for a pick and place spindle assembly |
CN100348871C (zh) * | 2004-07-07 | 2007-11-14 | 浙江工业大学 | 组合真空发生器 |
SE530787C2 (sv) * | 2007-01-16 | 2008-09-09 | Xerex Ab | Ejektoranordning med luftningsfunktion |
CN101307783A (zh) * | 2007-05-18 | 2008-11-19 | 富葵精密组件(深圳)有限公司 | 气动液体抽取装置 |
SE535891C2 (sv) * | 2011-06-15 | 2013-02-05 | Xerex Ab | Regulatoranordning inrättad att i samverkan med en tryckluftsdriven vakuumgenerator upprätthålla ett undertryck i ett medelst vakuum aktiverat griporgan |
GB2509182A (en) | 2012-12-21 | 2014-06-25 | Xerex Ab | Vacuum ejector with multi-nozzle drive stage and booster |
JP6575013B2 (ja) * | 2012-12-21 | 2019-09-18 | ピアブ・アクチエボラグ | 楕円形の末広がりセクションを有する真空エジェクタノズル |
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 |
US9120232B1 (en) * | 2013-07-26 | 2015-09-01 | Western Digital Technologies, Inc. | Vacuum pick-up end effector with improved vacuum reading for small surface |
CN103644149A (zh) * | 2013-12-07 | 2014-03-19 | 四川锦宇化机有限公司 | 高压甲铵喷射器 |
CN105090133B (zh) * | 2014-05-19 | 2017-11-17 | 江阴派姆汽车部件有限公司 | 真空泵装置以及一种制造所述真空泵装置的方法 |
GB201418117D0 (en) | 2014-10-13 | 2014-11-26 | Xerex Ab | Handling device for foodstuff |
EP3192756B1 (de) * | 2016-01-15 | 2021-09-29 | Piab Ab | Steuerung einer vakuumanlage mit einem vakuumerzeuger |
EP3252317B1 (de) * | 2016-06-01 | 2020-01-29 | Piab Ab | Steuerung eines vakuumsystems mit einer vakuumerzeugeranordnung |
US10729293B2 (en) | 2017-02-15 | 2020-08-04 | The Toro Company | Debris blower incorporating flow ejector |
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US2874989A (en) * | 1955-04-27 | 1959-02-24 | Ingersoll Rand Co | Control for hoists |
US4380418A (en) * | 1981-02-25 | 1983-04-19 | General Motors Corporation | Vacuum pressure selection and generation device |
JPS614900A (ja) * | 1984-06-18 | 1986-01-10 | Shoketsu Kinzoku Kogyo Co Ltd | エゼクタ装置 |
DE3818381A1 (de) * | 1987-05-30 | 1988-12-15 | Myotoku Kk | Vorrichtung zum aufheben des unterdruckes fuer eine ejektorpumpe |
US5007803A (en) * | 1989-09-28 | 1991-04-16 | Global Pumps, Inc. | Air operated vacuum pump |
Family Cites Families (6)
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JPS59160900U (ja) * | 1983-04-15 | 1984-10-27 | 株式会社 妙徳 | 真空発生装置 |
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2001
- 2001-08-30 EP EP01120843A patent/EP1288504B1/de not_active Expired - Lifetime
- 2001-08-30 ES ES01120843T patent/ES2283363T3/es not_active Expired - Lifetime
- 2001-08-30 DE DE50112524T patent/DE50112524D1/de not_active Expired - Lifetime
- 2001-08-30 AT AT01120843T patent/ATE363029T1/de not_active IP Right Cessation
-
2002
- 2002-08-29 JP JP2002251177A patent/JP2003083300A/ja active Pending
- 2002-08-29 US US10/231,406 patent/US6851936B2/en not_active Expired - Fee Related
- 2002-08-30 CN CN02132122.1A patent/CN1280549C/zh not_active Expired - Fee Related
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005025208A1 (de) * | 2005-05-25 | 2006-11-30 | Festo Ag & Co. | Vakuumerzeugervorrichtung |
DE102005025208B4 (de) * | 2005-05-25 | 2007-07-12 | Festo Ag & Co. | Vakuumerzeugervorrichtung |
DE102016215027A1 (de) * | 2016-08-11 | 2018-02-15 | Robert Bosch Gmbh | Brennstoffzellenvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
ATE363029T1 (de) | 2007-06-15 |
CN1407246A (zh) | 2003-04-02 |
DE50112524D1 (de) | 2007-07-05 |
CN1280549C (zh) | 2006-10-18 |
US6851936B2 (en) | 2005-02-08 |
JP2003083300A (ja) | 2003-03-19 |
US20030044287A1 (en) | 2003-03-06 |
EP1288504B1 (de) | 2007-05-23 |
ES2283363T3 (es) | 2007-11-01 |
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