• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a multi-stage ejector (1) for providing a vacuum in an industrial process, comprising at least two ejector units (2,3,4) axially arranged at predetermined distances from each other in one ejector housing (5), each of the at least two ejector units (2,3,4) comprises at least two parallel-arranged hollow bushings for compressed air (13, 17) comprising inlet (14, 18) and outlet nozzles (16, 19) and at least one hollow bush for vacuum (16,20). Characteristic of the invention is a fi: each of at least two ejector units (2,3,4), is designed as a one-piece part. Fig. 2.
    公开号:SE1400313A1
    申请号:SE1400313
    申请日:2014-06-23
    公开日:2015-12-24
    发明作者:Daniel Onishi
    申请人:Onishi Teknik Ab；
    IPC主号:
    专利说明:

    1015202530351321SE 2In GB2262135A Figs. 1 and 2,ejector housing,separatedtransversea multi-stage ejector is displayed in oneincluding axially arranged ejector unitsfrom each other via, arranged in the ejector housing,arbitration plan, whereby the arbitration plan, includescompressed air-ejector nozzles resp. non-return valves are mounted.bushings for and vacuum ducts in whichUS4696625A Fig. 2, shows a multi-stage ejector similar to that ofGB2262l35A. US4696625A Fig. 2also distinguishes onelongitudinal plane in which the vacuum bushings withThe multi-stage projectortoaccording tothrough the ejector housing includesvalves are provided.
    Variousthe implementationsfastenersmethod of mounting ejector nozzles in compressed airhas been proposed, e.g. different types ofsuch as adhesive dressings, screw dressings, threaded dressingsor shrink joints.
    A problem1 with said multi-stage ejectors is theirsdesign with many separate parts that must be assembled,horizontalwhichtransverse and planar, separate ejectornozzles, etc., entails "an increased risk ofmalfunction occurs in the ejector. Many parts also involvethat the risk of errors in the manufacture of the ejector is high, withhigh rejection as a result.
    In light of the above, there is a need for onesimple multi-stage ejector with few components, which has a highfunctional safety and which is simple and inexpensive tomanufacture.
    OBJECT OF THE INVENTION AND ITS FEATURESA main object of the present invention has been onesimplifiedfunctional safety that is simple and inexpensive to manufacture.multi-stage ejector with few components, high10152025301321SE 3An additional purpose has been a multi-stage ejector whichcan easily be miniaturized for use in e.g.microelectromechanical systems (MEMS).
    Mentioned purposes, as well as other purposes not listed here,satisfactorily, by whatare set out in the present independent claims.
    Embodiments of the invention are set forth in the dependent claimspatent claims.have you achievedoneincluding at leastThus, according to the present invention,come a multi-stage ejector for achievingvacuum flow in an industrial process,two ejector units axially arranged on predetermineddistances from each other in an ejector housing, eachthe at least two ejector units comprise at least twoparallel hole openings with inlet andoutlet nozzles for a compressed air flow and at least onehollow bushing for the vacuum flow,Characteristic of the multi-stage ejector is that each ofthe Ininst two ejector units with the hole bushings forcompressed air onecompressed air flowthe flow.with inlet and outlet nozzles forand at least one hole bushing for vacuumAccording to additional aspects of the multi-stage projector:that the ejector units are positionable in the ejector housing, vialongitudinal grooves arranged on the outside of the ejector units andvia corresponding longitudinal guide rails arranged onthe inside of the ejector housing,1015202530351321SE 4that the ejector units are lockable via the ejector housinginside, spring-loaded guide lugs and via on,the outside of the ejector units, corresponding recesses,that the ejector housing is designed as a cylinder,that the first ejector unit and the third ejector unitincludes a socket connector for connection to incomingrespective outgoing compressed air, the sleeve couplingcomprises an outer sleeve, in which an inner sleeve ismounted, including a mounting seat for possiblemounting of a non-return valve and a filter,that the sleeve coupling comprises transverse spring-loadedlocking pins for locking the sleeve coupling to the respectiveejector unit.
    ADVANTAGES AND EFFECTS OF THE INVENTIONThe invention entails a number of advantages and effects,the most important being; simple construction with few parts,with high functional safety, which is easy to manufacture andtroubleshoot.
    The invention also enables a far-reachingminiaturization, for application to e.g. MEMS.
    The invention also involves a simplified manufacturingprocedure with major cost benefits as a result.
    The invention has been defined in the following patentsrequirements and will now be described in more detail in connection withattached figures.
    Additional benefits and effects will be apparent atstudiunl and consideration of the following, detailedthe description of the invention with simultaneous referenceto the attached drawing figure there;1015202530351321SE 5Fig. 1 schematically shows an overview view of a multi-stageejector, designed as a vacuum pump, comprising threeejector units axially arranged one after the other, afirst ejector unit comprising a coupling sleevefor connection to incoming compressed air, a secondintermediate ejector unit and a thirdejector unit comprising a coupling sleeve and anon-return valve for connection to outgoing compressed air,Fig. 2according to Fig. 1,shows a longitudinal section A-A of a multi-stage ejectorwhere the design of.
    Fig. 3 shows a cross section of a multi-stage ejector according toFig. 1,and the vacuum channel for incoming vacuum flow is shown.where the compressed air duct for outgoing compressed airFig. 4multi-stage ejector according to Fig. 1.shows a cylindrical ejector housing intended for oneFig. 5 shows a detail view of a coupling sleeve according tofigure 1, where the position of the non-return valve in the coupling sleeveappears.
    DETAILED DESCRIPTION OF EMBODIMENTFigures 1-4 show a preferred embodiment of amulti-stage ejector according to the invention, made in the form of aejector pump. The ejector pump, Figures 1 and 2, comprises threeejector units 2,3,4, axially arranged one after the other; onefirst ejector unit 2, comprising a first compressed aircompressed air,a second intermediateconnection 9 for connection to incomingfor example, via a compressed air hose,includingtoejector unit 3 and a third ejector unit 4,a second compressed air connection 21 for connectionoutgoing compressed air, for example, via a compressed air hose.10152025301321SE 6The ejector pump has, preferably, a cylindrical shape, but canalso have another shape with, for example, square orrectangular cross section. The ejector pump is, preferably,housed in an ejector housing 5, figure 4, with a design whichcorresponds to the shape of the ejector pump, e.g. cylindrical shape.
    In an alternative embodiment, not shown, the ejector housing canalso include removable ends with bushings forcompressed air connections.
    In another special embodiment, not shown, consists ofthe ejector housing of short cylindrical sleeves, arrangedbetween and connected to the three ejector units 2,3,4.
    The length of the sleeves corresponds to the space betweenthe ejector units 2,3,4.toThe benefits. with the sleeve arrangement,is above all the multi-stage projector can be made smaller,lighter and more flexible by making an ejector unit simplecan be replaced by loosening a sleeve.
    The three ejector units 2,3,4 are, axially and radially,and lockable, relative to each other invia a plurality,positionablethe ejector housing 5, on the inside of the ejector housing 5arranged, spring-biased guide lugs and via on,the ejector units 2,3,4 are arranged, for the guide lugscorresponding recesses. The control heels can with advantagearranged on longitudinal guide rails inside the ejector housingAlternatively, the ejector units 2,3,4 may be positionable,relative to each other, i2,3,4the inner wall of the ejector housing 5,the ejector housing 5, via onthe longitudinal grooves 6 of the ejector units and via, oncorresponding guide rails 7.
    The ejector units 2-4 positionable in the ejector housing 5 arealso lockable in certain positions, via in the ejector housing 5arranged locking devices 8, which, for example, can consist ofradiallyor clamping screws.arranged locking pins or alternatively of lockingIn addition to hole penetrations for compressed air l1, l3, l7 includethe second and third ejector units 3,4 in the axial direction1015202530351321SE 7hole penetrations for vacuum, also called vacuumbushings 16,20. In the spaces between the first andthe second ejector unit 2,3 and between the second and thethe third ejector unit 3,4 (suction side of the ejector pump) occursthe vacuum flow of the ejector pump 1.
    The vacuum flow depends on factors such as the pressure of itincoming compressed air, number of ejector units, distancebetween the ejector units and the ejector nozzlesdesign; In one embodiment, the vacuum of the ejector is regulated.flow, through the distance between the ejector units 2,3,4regulated.
    As shown in Figure 2, the first and third includethe ejector unit 3, 4 also each coupling device forconnection to incoming and outgoing compressed airto the multi-stage ejector. For this purpose has a flexiblesocket coupling 21, figures 5 and 6, developed. Socket coupling21, which includes a swivel member, can be used both onand 6the sleeve coupling 21, however, is only mounted on the ejector unit 4the suction and pressure side of the ejector. Figure 5 showsfor outgoing compressed air. includes aouter sleeve 22,Socket coupling 21in which an inner sleeve 23 is mounted. INthe inner sleeve 23 is provided with a seat for mountingof a non-return valve 24 and of a filter 25. Non-return valve, orfilter functionality or both can be easily built in andreplaced if necessary.2.4 socket coupling 21support flange 25 and a bearing seat 26.
    For mounting the socket coupling 21 in aejector unit also includes aThe socket coupling is locked with transverse spring-loadedlocking pins. The swivel part can be designed in different ways,with different types of threads, plug connections or sockets.
    The entire socket coupling 21 with pressure connection can be easily replacedby removing the transverse locking pins.
    In the preferredand 2,ejector units 2,3,4 four compressed airthe embodiment of the multi-stage ejector,Figure 1 includes, each, of the three1015202530351321SE 8divided into one2,3,4 halva. INextendsbushings 19, semicircular forl onfirstcompressed air-the bushings 11 about halfway through the ejector unit 2,one of the ejector unitsthe ejector unit 2 the fourwhere it connects to the connection device 9 for connectionto incoming compressed air.
    In the second ejector unit 3 as well as in the thirdthe ejector unit 4 are the compressed air bushings 13, 17through from one end to the other end.
    The compressed air bushings l1, l3, l7 further compriseaerodynamically designed inlet and nozzles 14,18 andoutlet nozzles l2, l5, l9.
    Furthermore, the ejector units 2,3 and 4 are positioned oncertain distances from each other so that the first ejectorto itandthe outlet nozzle 12 of the unit 2 connects othersthe inlet nozzle 14 of the ejector unit 3 the otherthe outlet nozzle 15 of the ejector unit 3 connects to itinlet nozzle 18 of the third ejector unit 3.
    The ejector units 2,3,4 with hole bushings for compressed airand vacuum and associated inlet and outlet nozzles,are each designed as a single detail and manufacturedfrom a single paragraph. Manufacture of ejector units 2,3,4takes place, preferably, by means of known technology via mechanicalmachining "from a piece of metal. Alternatively, for examplefor use in MEMS applications, manufacturing canalso take place via a pressing or casting operation,whereby plastic or composite material can also be used.
    Alternative embodiments regarding the number of compressed airimplementations and their distribution are possible. Figure 5 and6 shows an alternative embodiment of an ejector unit 30,where hole penetration for the vacuum flow 33 is centrally arrangedin the ejector unit 30 and where the hole bushings 32 forcompressed air is evenly distributed around the centrally positionedthe vacuum channel 33.1015202530351321SE 9The invention is not limited to the embodiments shownbut can be varied in different ways within the scope of the claims.
    权利要求:
    Claims (1)
    [1]
    A multi-stage ejector (1) for generating a vacuum in an industrial process, comprising at least two ejector units (2,3,4) axially arranged at fixed distances from each other in an ejector housing (5), wherein each and one of the at least two ejector units (2,3,4) comprises at least two parallel hole holes for compressed air (13, 17) comprising inlet (14, 18) and outlet nozzles (15, 17) and at least one hole bushing for vacuum (16,20), characterized in that each of the at least two ejector units (2,3,4) is designed as a part made in one piece. Multi-stage ejector (1) according to claim 1, characterized in that the ejector units (2,3,4) are positionable in the ejector housing (5), via longitudinal grooves (7) arranged on the outside of the ejector units (2,3,4) and via corresponding longitudinal guide rails (7) arranged on the inside of the ejector housing (5). Multi-stage ejector (1) according to claim 2, characterized in that the ejector units are lockable via on the inside of the ejector housing 5, spring-biased guide lugs and via on the outside of the ejector units (2,3,4) , corresponding recesses. Multi-stage ejector (1) according to claims 1 to 3, characterized in that the ejector housing (5) is designed as an open cylinder. Multi-stage ejector (1) according to claim 1, characterized in that the first ejector unit 2 and the third ejector unit (4) comprise a socket coupling (21) for connection to incoming and outgoing compressed air, respectively, the sleeve coupling (21) comprising an outer sleeve (22), in which an inner sleeve (23) is mounted, comprising a mounting seat for possible mounting of a non-return valve (24) and a filter (25). Multi-stage ejector (1) according to claim 5, characterized in that the sleeve coupling (21) comprises transverse spring-loaded locking pins (10) for locking the sleeve coupling (21) to the respective ejector unit (2,4).
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    同族专利:
    公开号 | 公开日
    SE539775C2|2017-11-28|
    US20170152868A1|2017-06-01|
    WO2015199596A1|2015-12-30|
    US10408234B2|2019-09-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    IL74282D0|1985-02-08|1985-05-31|Dan Greenberg|Multishaft jet suction device|
    DE19808548A1|1998-02-28|1999-09-02|Itt Mfg Enterprises Inc|Negative pressure creating device for pneumatic brake amplifier of vehicle|
    DE29916531U1|1999-09-20|2001-02-08|Volkmann Thilo|Ejector|
    EP1452236A2|2000-07-11|2004-09-01|Nordson Corporation|Unipolarity powder coating systems including improved tribocharging and corona guns|
    US20050061378A1|2003-08-01|2005-03-24|Foret Todd L.|Multi-stage eductor apparatus|
    DE202009019074U1|2009-11-24|2016-05-23|J. Schmalz Gmbh|Compressed air operated vacuum generator|
    US20130167566A1|2011-05-23|2013-07-04|Carrier Corporation|Ejectors and Methods of Manufacture|
    KR101304123B1|2012-02-27|2013-09-05|이우승|Cylindrical vaccum ejector pump|
    DE102013107537B4|2013-07-16|2015-02-19|J. Schmalz Gmbh|Multi-stage ejector|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1400313A|SE539775C2|2014-06-23|2014-06-23|Multistage vacuum ejector|SE1400313A| SE539775C2|2014-06-23|2014-06-23|Multistage vacuum ejector|
    PCT/SE2015/000039| WO2015199596A1|2014-06-23|2015-06-22|Multi-stage vacuum ejector|
    US15/319,398| US10408234B2|2014-06-23|2015-06-22|Multi-stage vacuum ejector|
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