EP2333350A1 - Vacuum generator operated by pressurised air - Google Patents
Vacuum generator operated by pressurised air Download PDFInfo
- Publication number
- EP2333350A1 EP2333350A1 EP10191764A EP10191764A EP2333350A1 EP 2333350 A1 EP2333350 A1 EP 2333350A1 EP 10191764 A EP10191764 A EP 10191764A EP 10191764 A EP10191764 A EP 10191764A EP 2333350 A1 EP2333350 A1 EP 2333350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum generator
- generator according
- section
- venturi nozzle
- venturi
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
- 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
-
- 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
-
- 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
-
- 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 vacuum generator with the features of the preamble of claim 1.
- Ejectors with cylindrical venturi nozzles are known (US Pat. US 2004/0052646 .
- multi-stage ejectors with cylindrical venturi nozzles are known (US Pat. DE 699 21 627 . WO 99/49216 . US Pat. No. 6,394,760 B1 . DE 44 91 977 . WO 01 21961 A1 . WO 2006/011760 ).
- cylindrical conveying ejectors according to the Coanda principle and the planar Coanda principle for gripping ( WO 2009/054732 A1 ) known.
- a disadvantage is considered that the space of the vacuum generator is relatively large.
- the invention has for its object to provide a vacuum generator with a smaller space.
- planar Venturi nozzle according to the invention in the vacuum generator requires much less space and can also be constructed in several stages.
- the advantages are seen in the fact that the flat surface construction of the components of flat Semifinished products are manufacturable, making them cheaper to produce. Due to the lower height, they require less space. In combination with surface suction cups, they can be ideally adapted to the surface.
- the vacuum control has a vacuum sensor and a non-return valve.
- multistage ejectors with multiple planar, successively connected Venturi nozzles realized.
- the closure flaps can be arranged perpendicular to the surface or in the surface, ie parallel to it.
- FIG. 1 shows a total of 10 designated Mehrgenejektor as he eg from the DE 699 21 627 T2 is known.
- This known Mehrgenejektor 10 has four suction stages 12 to 18 with cylindrical Venturi nozzles 20 to 26.
- FIGS. 1a) to 1d successive Ansaugzudes with increasing vacuum in the vacuum chamber 28 and overall decreasing Saugvolumenstrom shown.
- Compressed air is introduced in the direction of the arrow 30 into the first Venturi nozzle 20, whereby air from the vacuum chamber 28 is sucked in the direction of the arrow 32.
- the compressed air also flows through the Venturi nozzle 22, so that air is sucked in the direction of the arrow 34.
- FIG. 1b shows an operating position of the multi-stage ejector 10, in which the non-return valve 52 is closed. If a certain negative pressure in the vacuum chamber 28 is reached, then the check valve 52 closes automatically, so that only the sucked air through the suction stages 12 to 16 in the direction of arrows 32, 34 and 36 is sucked. The suction volume flow is thereby reduced, but the negative pressure in the vacuum chamber 28 increases.
- the Figure 1c shows an operating position of the multi-stage ejector 10, in which additionally the non-return valve 50 is closed.
- This check valve 50 closes when an even higher negative pressure in the vacuum chamber 28 has been reached. Now only the sucked air via the suction stages 12 and 14 in the direction of arrows 32 and 34 is sucked. The suction volume flow is thereby even lower, but the negative pressure in the vacuum chamber 28 increases further.
- the Figure 1d shows an operating position of the multi-stage ejector 10, in which all non-return valve 48 to 52 are closed.
- the non-return valve 48 closes at even higher negative pressure in the vacuum chamber 28.
- the suction volume flow is thereby even lower, which is illustrated by the small number of arrows 44, but now the maximum negative pressure in the vacuum chamber 28 can be generated.
- FIG. 2 shows a multi-stage ejector 10 with three drinking stages 12 to 16 and two non-return valves 48 and 50, which occupy their closed position.
- the compressed air is introduced via two openings 54, whereas the exhaust air from three openings 42 and 56 is discharged.
- the FIG. 3 shows a flat Coanda ejector 58, as he from the WO 2009/054732 A1 is known.
- the Coanda ejector 58 has a sandwich construction and in particular a cover plate 60, a bottom plate 62 and a function spacer 64.
- the Coanda ejector 58 is designed in one stage, whereas the Coanda ejector 58 in the FIG. 3b ) has a plurality of parallel stages.
- the compressed air enters the direction of the arrow 30 through the opening 54 in the Coanda ejector 58 and is introduced tangentially via a compressed air channel 65 into the suction channel 66.
- FIG. 4 shows an exploded view of a surface suction gripper 72 according to the invention with a multi-stage ejector 10 of planar Venturi nozzles 20, 22 and 24, wherein the suction openings 46 and check valves 48, 50 and 52 are arranged parallel to the plane of the Venturi nozzles 20 to 24.
- the multi-stage ejector 10 has a sandwich construction, wherein below the cover plate 60, the nozzle plate 74 is located. This is followed by a support plate 76 with elongated openings 78 for supporting the check valves 48, 50 and 52, which lie in a plate 80.
- This plate 80 is preferably made of an elastomer and is provided by an omega-shaped ( ⁇ -shaped) cutting line with tongue-like or spoon-shaped valve tongues. Below this plate 80 there is a plate 82 having the suction openings, on the underside of which a frame 84 rests, via which a suction space 86 is formed between the plate 82 and a perforated plate 88.
- the plates 60, 74, 76, 82, 82 and 88 are preferably made of metal, wherein the frame may be made of metal or a sealing material made of plastic. All plates can be punched or laser cut.
- FIG. 5 shows an assembly view of the surface suction gripper 72 according to FIG. 4 with the multi-stage ejector 10 with the planar Venturi nozzles 20, 22 and 24, wherein the suction openings 46 and check valves 48, 50 and 52 are arranged parallel to the plane of the Venturi nozzles 20, 22 and 24. It is clearly recognizable the slim construction with low height. Due to the rectangular cross-section of the venturi 20, 22 and 24, the cover of the nozzle plate 74 is made possible with simple plates.
- FIG. 6 shows a multi-stage ejector 10 with planar venturi 20, 22 and 24 and three suction stages 12, 14 and 16, wherein the suction ports 46 and the check valves 48 and 50 are in the Venturi nozzles 20, 22 and 24 having plane of the nozzle plate 74 and the two check valves 48 and 50 are closed.
- These check valves 48 and 50 are provided on a separate plate 80 or integrated into the suction stages 14 and 16, in particular in grooves 90 (FIG. FIG. 7 ) are used and set up from a certain negative pressure and close the suction when the suction flow falls below a threshold.
- FIG. 7 the flow pattern of the compressed air and the suction air is shown when the check valves 48 and 50 are opened.
- the nozzle plate 74 may also be stamped or made by laser. The structure is even flatter in this embodiment. Due to the rectangular cross-section of the venturi 20, 22 and 24, the cover of the nozzle plate 74 is made possible with simple plates.
Abstract
Description
Die Erfindung betrifft einen Unterdruckerzeuger mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a vacuum generator with the features of the preamble of claim 1.
Es sind Ejektoren mit zylindrischen Venturi-Düsen bekannt (
Der Erfindung liegt die Aufgabe zugrunde, einen Unterdruckerzeuger mit einem kleineren Bauraum bereitzustellen.The invention has for its object to provide a vacuum generator with a smaller space.
Diese Aufgabe wird mit einem Unterdruckerzeuger gelöst, der die Merkmale des Anspruchs 1 aufweist.This object is achieved with a vacuum generator having the features of claim 1.
Die erfindungsgemäße planare Venturidüse im Unterdruckerzeuger benötigt wesentlich weniger Bauraum und kann zudem auch mehrstufig aufgebaut sein. Die Vorteile werden darin gesehen, dass durch die flächige Bauweise die Bauteile aus flächigen Halbzeugen fertigbar sind, wodurch sie preiswerter herstellbar sind. Durch die geringere Bauhöhe benötigen sie einen geringeren Bauraum. In Verbindung mit Flächensauggreifern können sie ideal an die Fläche angepasst werden.The planar Venturi nozzle according to the invention in the vacuum generator requires much less space and can also be constructed in several stages. The advantages are seen in the fact that the flat surface construction of the components of flat Semifinished products are manufacturable, making them cheaper to produce. Due to the lower height, they require less space. In combination with surface suction cups, they can be ideally adapted to the surface.
Erfindungsgemäß werden die folgenden Ausführungsbeispiele bevorzugt. Ein Unterdruckerzeuger mit einer planaren Venturi-Düse, oder mit einer planaren Venturi-Düse mit Vakuumregelung, wobei die Vakuumregelung einen Vakuum-Sensor und eine Rückschlagklappe aufweist. Es sind auch Mehrstufenejektoren mit mehreren planaren, hintereinander geschalteten Venturi-Düsen realisierbar. Dabei können die Verschlussklappen senkrecht zur Fläche oder in der Fläche, also parallel zu dieser, angeordnet sein.According to the invention, the following embodiments are preferred. A vacuum generator with a planar Venturi nozzle or with a planar Venturi nozzle with vacuum control, wherein the vacuum control has a vacuum sensor and a non-return valve. There are also multistage ejectors with multiple planar, successively connected Venturi nozzles realized. In this case, the closure flaps can be arranged perpendicular to the surface or in the surface, ie parallel to it.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die beigefügte Zeichnung zwei besonders bevorzugte Ausführungsbeispiele beschrieben sind. Dabei können die in der Zeichnung dargestellten sowie in der Beschreibung und in den Ansprüchen erwähnten Merkmale jeweils im Einzelnen als auch in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which two particularly preferred embodiments are described with reference to the accompanying drawings. The features shown in the drawing and mentioned in the description and in the claims may be essential to the invention in each case as well as in any combination.
In der Zeichnung zeigen:
- Figur 1
- einen bekannten Mehrstufenejektor mit zylindrischen Venturi-Düsen und vier Saugstufen Darstellung
- Figur 2
- aufeinanderfolgender Ansaugzustände mit steigendem Vakuum in der Vakuumkammer und insgesamt abnehmendem Saugvolumenstrom dargestellt gemäß der
DE 699 21 627 T2 - Figur 3
- einen bekannten flächigen Coanda-Ejektor gemäß der
WO 2009/054732 A1 - Figur 4
- eine Explosionsdarstellung eines erfindungsgemäßen Flächensauggreifers mit einem Mehrstufenejektor aus planaren Venturi-Düsen, wobei die Saugöffnungen und Rückschlagklappen parallel zur Ebene der VenturiDüsen angeordnet sind;
- Figur 5
- eine Zusammenbau-Ansicht des Flächensauggreifers gemäß
Figur 4 mit einem Mehrstufenejektor aus planaren Venturi-Düsen, wobei die Saugöffnungen und Rückschlagklappen parallel zur Ebene der VenturiDüsen angeordnet sind; - Figur 6
- einen Mehrstufenejektor mit planaren Venturidüsen und drei Saugstufen, wobei die Saugöffnungen und die Rückschlagklappen senkrecht zur Ebene der Venturi- Düsen liegen und die beiden Rückschlagklappen geschlossen sind; und
- Figur 7
- den Mehrstufenejektor mit planaren Venturidüsen und drei Saugstufen sowie mit aufgrund einer Strömungssimulation berechneten Strömungslinien.
- FIG. 1
- a well-known multi-stage ejector with cylindrical Venturi nozzles and four suction stages representation
- FIG. 2
- successive Ansaugzustände with increasing vacuum in the vacuum chamber and overall decreasing suction flow shown according to the
DE 699 21 627 T2 - FIG. 3
- a known planar Coanda ejector according to the
WO 2009/054732 A1 - FIG. 4
- an exploded view of a surface suction gripper according to the invention with a multi-stage ejector from planar Venturi nozzles, wherein the suction openings and check valves are arranged parallel to the plane of the Venturi nozzles;
- FIG. 5
- an assembly view of the surface suction according to
FIG. 4 with a multi-stage ejector of planar venturi nozzles, with the suction ports and check valves arranged parallel to the plane of the venturi nozzles; - FIG. 6
- a multi-stage ejector with planar venturi nozzles and three suction stages, the suction openings and the non-return valves being perpendicular to the venturi plane Nozzles are located and the two check valves are closed; and
- FIG. 7
- the multi-stage ejector with planar venturi nozzles and three suction stages as well as flow lines calculated on the basis of a flow simulation.
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Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009047085A DE102009047085A1 (en) | 2009-11-24 | 2009-11-24 | Compressed air operated vacuum generator |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2333350A1 true EP2333350A1 (en) | 2011-06-15 |
Family
ID=43602844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10191764A Withdrawn EP2333350A1 (en) | 2009-11-24 | 2010-11-18 | Vacuum generator operated by pressurised air |
Country Status (4)
Country | Link |
---|---|
US (1) | US8596990B2 (en) |
EP (1) | EP2333350A1 (en) |
CN (1) | CN102072209A (en) |
DE (2) | DE102009047085A1 (en) |
Cited By (5)
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WO2014096022A1 (en) * | 2012-12-21 | 2014-06-26 | Xerex Ab | Multi-stage vacuum ejector with moulded nozzle having integral valve elements |
US10202984B2 (en) | 2012-12-21 | 2019-02-12 | Xerex Ab | Vacuum ejector with multi-nozzle drive stage and booster |
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 |
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JP2013512120A (en) * | 2009-11-25 | 2013-04-11 | オセ−テクノロジーズ・ベー・ヴエー | Sheet processing device |
US9451810B2 (en) | 2011-11-18 | 2016-09-27 | Nike, Inc. | Automated identification of shoe parts |
US8755925B2 (en) | 2011-11-18 | 2014-06-17 | Nike, Inc. | Automated identification and assembly of shoe parts |
US8696043B2 (en) * | 2011-11-18 | 2014-04-15 | Nike, Inc. | Hybrid pickup tool |
US9010827B2 (en) | 2011-11-18 | 2015-04-21 | Nike, Inc. | Switchable plate manufacturing vacuum tool |
US10552551B2 (en) | 2011-11-18 | 2020-02-04 | Nike, Inc. | Generation of tool paths for shore assembly |
US8960745B2 (en) | 2011-11-18 | 2015-02-24 | Nike, Inc | Zoned activation manufacturing vacuum tool |
US8849620B2 (en) | 2011-11-18 | 2014-09-30 | Nike, Inc. | Automated 3-D modeling of shoe parts |
US8958901B2 (en) | 2011-11-18 | 2015-02-17 | Nike, Inc. | Automated manufacturing of shoe parts |
US8858744B2 (en) | 2011-11-18 | 2014-10-14 | Nike, Inc. | Multi-functional manufacturing tool |
US9328702B2 (en) | 2013-10-24 | 2016-05-03 | Ford Global Technologies, Llc | Multiple tap aspirator |
SE539775C2 (en) * | 2014-06-23 | 2017-11-28 | Onishi Teknik Ab | Multistage vacuum ejector |
WO2016007861A1 (en) * | 2014-07-10 | 2016-01-14 | Dayco Ip Holdings, Llc | Dual venturi device |
US9657748B2 (en) * | 2014-08-06 | 2017-05-23 | Dayco Ip Holdings, Llc | Pneumatically actuated vacuum pump having multiple venturi gaps and check valves |
EP3209346B1 (en) | 2014-10-24 | 2021-02-24 | Integrated Surgical LLC | Suction device for surgical instruments |
US9828953B2 (en) * | 2014-12-01 | 2017-11-28 | Dayco Ip Holdings, Llc | Evacuator system having multi-port evacuator |
EP3109568B1 (en) * | 2015-06-24 | 2017-11-01 | Danfoss A/S | Ejector arrangement |
CN114225125A (en) | 2015-07-13 | 2022-03-25 | 康曼德公司 | Surgical suction device using positive pressure gas |
US10926007B2 (en) | 2015-07-13 | 2021-02-23 | Conmed Corporation | Surgical suction device that uses positive pressure gas |
KR101685998B1 (en) | 2016-09-21 | 2016-12-13 | (주)브이텍 | Vacuum pump using profile |
DE102017202761A1 (en) * | 2017-02-21 | 2018-08-23 | Homag Gmbh | Device for receiving an adhesive application unit and method |
WO2019030724A1 (en) * | 2017-08-10 | 2019-02-14 | Colin Maxwell Wade | Vacuum lifter |
IT201800006994A1 (en) * | 2018-07-06 | 2020-01-06 | SUCTION DEVICE FOR THE HOLDING AND / OR TRANSPORT OF OBJECTS OF DIFFERENT FORMATS | |
US20230304510A1 (en) * | 2022-03-25 | 2023-09-28 | Guardair Corp. | Multistage vacuum |
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- 2009-11-24 DE DE202009019074.9U patent/DE202009019074U1/en not_active Expired - Lifetime
-
2010
- 2010-11-18 EP EP10191764A patent/EP2333350A1/en not_active Withdrawn
- 2010-11-23 CN CN2010105548531A patent/CN102072209A/en active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014096022A1 (en) * | 2012-12-21 | 2014-06-26 | Xerex Ab | Multi-stage vacuum ejector with moulded nozzle having integral valve elements |
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 |
US10767663B2 (en) | 2012-12-21 | 2020-09-08 | Piab Aktiebolag | Vacuum ejector with tripped diverging exit flow |
US10457499B2 (en) | 2014-10-13 | 2019-10-29 | Piab Aktiebolag | Handling device with suction cup for foodstuff |
Also Published As
Publication number | Publication date |
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CN102072209A (en) | 2011-05-25 |
US8596990B2 (en) | 2013-12-03 |
DE102009047085A1 (en) | 2011-06-01 |
DE202009019074U1 (en) | 2016-05-23 |
US20110123359A1 (en) | 2011-05-26 |
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