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DE69921627C5 - Vakuum ejektorpumpe - Google Patents

Vakuum ejektorpumpe Download PDF

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Publication number
DE69921627C5
DE69921627C5 DE69921627A DE69921627A DE69921627C5 DE 69921627 C5 DE69921627 C5 DE 69921627C5 DE 69921627 A DE69921627 A DE 69921627A DE 69921627 A DE69921627 A DE 69921627A DE 69921627 C5 DE69921627 C5 DE 69921627C5
Authority
DE
Germany
Prior art keywords
nozzles
nozzle body
valve member
ejector
flow communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69921627A
Other languages
English (en)
Other versions
DE69921627T4 (de
DE69921627T2 (de
DE69921627D1 (de
Inventor
Peter Tell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerex AB
Original Assignee
Xerex AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20410633&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69921627(C5) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Xerex AB filed Critical Xerex AB
Application granted granted Critical
Publication of DE69921627D1 publication Critical patent/DE69921627D1/de
Publication of DE69921627C5 publication Critical patent/DE69921627C5/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04F5/467—Arrangements of nozzles with a plurality of nozzles arranged in series

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

A multistage ejector (1) comprising three or more nozzles (2, 3, 4, 5) assembled in series, wherein the nozzles (2–5) comprise from the inlet end to the outlet end of the multistage ejector (1) an axial throughchannel (6) with gradually increasing cross-sectional opening area, wherein a stream of air fed through the nozzles at high velocity is used to create, in an outer, radially surrounding space (V, V') a negative pressure, the radially surrounding space being in flow communication (10) with at least two slots (7, 8, 9) located between the nozzles, characterized in that the nozzles have means to be coupled together into an integrated, rotationally symmetric nozzle body (1), and that the flow communication is provided by through openings (10) arranged in the wall of the rotationally symmetric nozzle body (1), the ejector having valve members (11) that are embodied as non- return valves and arranged to cover and...

Description

  • Tenor
  • Betreffend das europäische Patent 1 064 464 ( DE 699 21 627 )
    hat der 5. Senat (Nichtigkeitssenat) des Bundespatentgerichts aufgrund der mündlichen Verhandlung vom 20. Januar 2010 für Recht erkannt:
    • I. Das europäische Patent 1 064 464 wird mit Wirkung für das Hoheitsgebiet der Bundesrepublik Deutschland dadurch teilweise für nichtig erklärt, dass die Patentansprüche 1 bis 5 folgende Fassung erhalten:

Claims (5)

  1. A multistage ejector (1) comprising three or more nozzles (2, 3, 4, 5) assembled in series, wherein the nozzles (2–5) comprise from the inlet end to the outlet end of the multistage ejector (1) an axial throughchannel (6) with gradually increasing cross-sectional opening area, wherein a stream of air fed through the nozzles at high velocity is used to create, in an outer, radially surrounding space (V, V') a negative pressure, the radially surrounding space being in flow communication (10) with at least two slots (7, 8, 9) located between the nozzles, characterized in that the nozzles have means to be coupled together into an integrated, rotationally symmetric nozzle body (1), and that the flow communication is provided by through openings (10) arranged in the wall of the rotationally symmetric nozzle body (1), the ejector having valve members (11) that are embodied as non- return valves and arranged to cover and to open the through openings (10), the valve members embodied as non-return valves being accommodated for integration with the nozzle body (1).
  2. An ejector according to claim 1, characterized in that at least one flexible valve member (11) for covering the flow communication (10) is arranged integrally in the nozzle body so as to extend concentrically with the stream of air fed through the nozzles.
  3. An ejector according to claim 2, characterized in that the nozzles (2, 3, 4, 5) which are coupled together to form an integrated nozzle body (1) with slots (7, 8, 9) formed between the nozzles, has a substantially cylindrical, flexible valve member (11) arranged in connection with each slot, respectively, the valve member (11) being axially slotted (12) to present one or more semi-circular tongue (13) for covering the flow communications (10), respectively.
  4. An ejector according to claim 2, characterized in that the three or more nozzles are formed in opposing ends thereof to be assembled into an integrated nozzle body (1) with a through channel (6) of gradually increasing, sectional opening area, the nozzle body having at least two slots (7, 8, 9), which open into the channel and is in flow communication (10) with the surrounding space (V, V'), and at least one seat (18) for a valve member (11) covering the flow communication.
  5. An ejector according to claim 1, characterized by nozzles having a rotationally symmetric outer and inner cross sectional shape, assembled to form an integrated nozzle body (1), wherein one or more cylindrical valve members (11) are integrally received in the nozzle body in order to cover, upon a reached pressure difference between atmosphere and an outer space (V, V') surrounding the nozzle body, the flow communication (10) between the surrounding outer space and a channel (6) through the nozzles in the region of slots (7, 8, 9) formed between the assembled nozzles (2, 3, 4, 5) in the nozzle body, said valve member or valve members sealing against the inner wall of the nozzle body.
DE69921627A 1998-03-20 1999-03-12 Vakuum ejektorpumpe Expired - Lifetime DE69921627C5 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9800943A SE511716E5 (sv) 1998-03-20 1998-03-20 Ejektorpump
SE9800943 1998-03-20
PCT/SE1999/000386 WO1999049216A1 (en) 1998-03-20 1999-03-12 Vacuum ejector pump

Publications (2)

Publication Number Publication Date
DE69921627D1 DE69921627D1 (de) 2004-12-09
DE69921627C5 true DE69921627C5 (de) 2010-12-16

Family

ID=20410633

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69921627T Expired - Lifetime DE69921627T4 (de) 1998-03-20 1999-03-12 Vakuum ejektorpumpe
DE69921627A Expired - Lifetime DE69921627C5 (de) 1998-03-20 1999-03-12 Vakuum ejektorpumpe

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69921627T Expired - Lifetime DE69921627T4 (de) 1998-03-20 1999-03-12 Vakuum ejektorpumpe

Country Status (9)

Country Link
US (1) US6394760B1 (de)
EP (1) EP1064464B3 (de)
JP (1) JP4146086B2 (de)
KR (1) KR100393434B1 (de)
BR (1) BR9908210A (de)
DE (2) DE69921627T4 (de)
ES (1) ES2233029T7 (de)
SE (1) SE511716E5 (de)
WO (1) WO1999049216A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009019074U1 (de) 2009-11-24 2016-05-23 J. Schmalz Gmbh Druckluftbetriebener Unterdruckerzeuger

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Publication number Priority date Publication date Assignee Title
DE202009019074U1 (de) 2009-11-24 2016-05-23 J. Schmalz Gmbh Druckluftbetriebener Unterdruckerzeuger

Also Published As

Publication number Publication date
JP2002507698A (ja) 2002-03-12
BR9908210A (pt) 2000-11-28
KR20010040883A (ko) 2001-05-15
SE9800943D0 (sv) 1998-03-20
WO1999049216A1 (en) 1999-09-30
KR100393434B1 (ko) 2003-08-02
EP1064464B3 (de) 2008-11-05
US6394760B1 (en) 2002-05-28
ES2233029T7 (es) 2009-06-18
SE9800943L (sv) 1999-09-21
SE511716E5 (sv) 2009-01-28
JP4146086B2 (ja) 2008-09-03
DE69921627T4 (de) 2009-06-10
WO1999049216A8 (en) 1999-11-11
ES2233029T3 (es) 2005-06-01
SE511716C2 (sv) 1999-11-15
EP1064464B1 (de) 2004-11-03
EP1064464A2 (de) 2001-01-03
DE69921627T2 (de) 2005-10-27
DE69921627D1 (de) 2004-12-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8310 Action for declaration of annulment
8328 Change in the person/name/address of the agent

Representative=s name: HOFFMANN & EITLE, 81925 MUENCHEN

8312 Partial invalidation
8394 Patent changed during the nullification procedure (changed patent specification reprinted)
8310 Action for declaration of annulment