EP0768834B1 - Saugdüse, verfahren zum betrieb und verwendung der düse - Google Patents
Saugdüse, verfahren zum betrieb und verwendung der düse Download PDFInfo
- Publication number
- EP0768834B1 EP0768834B1 EP95922396A EP95922396A EP0768834B1 EP 0768834 B1 EP0768834 B1 EP 0768834B1 EP 95922396 A EP95922396 A EP 95922396A EP 95922396 A EP95922396 A EP 95922396A EP 0768834 B1 EP0768834 B1 EP 0768834B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- nozzle
- flow
- opening
- pressure
- 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
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
Definitions
- the present invention relates to a suction nozzle according to the preamble of claims 1 and 3.
- Known nozzles usually work more or less orthogonally to a surface and tend if they are not on the surface are led, for gluing, i.e. the suction opening sucks gets stuck on the surface to be worked and prevented the removal of the particles and / or the fluid.
- a vacuum cleaner nozzle according to the preamble of claim 1 is known from FR -A- 779498.
- This nozzle has a relative wide base area, which is traversed by grooves is that of the periphery of the nozzle body, guided linearly what tangentially flow into the bore of the suction pipe a circular flow in the pipe causes.
- This vacuum cleaner nozzle requires good ground contact in the Area of the intake manifold; if this is not available, so there is no circular flow.
- the necessary long grooves are energetically very unfavorable and impair the suction effect of the nozzle.
- this nozzle is said to be only slight in its operation Make noise and not clog the suction opening tend.
- the nozzle should also be one for heat exchanger, chimney and Form material separator applications for favorable flow.
- the advantage of the invention can be seen in the fact that The embodiment described creates a vortex in the suction nozzle, being in the suction opening and below this one Shear force is formed, which is to be removed solid particles and / or fluid peels off and in motion puts.
- the nozzle expediently has a tubular shape; she could but, if structural dimensions require it, also as a duct be executed.
- the concentric collar mentioned in claim 2 allows the Favorable suction effect to extend beyond the suction opening.
- independent claim 3 is particularly advantageous; it could be used in practice due to its small dimensions for cleaning devices of almost any kind, as well as in particular use for street sweepers etc. That in addition pressure nozzle part provided to the suction nozzle tube acts from the edge areas with the resulting shear force to the central Suction opening and supports vortex formation.
- the tear-off edge listed in claim 4 is used for support the separation of the interface flow in the work area the nozzle.
- the method according to claim 5 brings about in a simple manner also one of the receptacles of the medium inside the suction nozzle tube serving opposite, spiral vortex formation.
- the pressure ratios can be achieved overlay the desired shear effect in the work area and adjust.
- the setting of the ratios can be done empirically Changing the geometric relationships or by a corresponding one Splitting the partial flows can be achieved.
- the development according to claim 7 uses the known Coanda effect for targeted flow control.
- Fig. 1 is a vertical sectional view of a suction nozzle tube designated 1; the suction direction 2 is with a vertical arrow indicated.
- the suction nozzle tube 1 is below provided with an outwardly curved tab 3 and on top connected to a suction line SL.
- the area around the suction opening 6 of the suction nozzle tube 1 has a concentric Collar 5 on. The resulting flows are with straight or curved arrows 12 drawn.
- FIG. 3 the tabs 4, which act analogously to FIGS. 1 and 2, are bent towards the inside of the pipe.
- the tangential to the suction direction 2 flow 12 acting through the opening 7 also results in a circular flow and is through a corresponding one labeled circular arrow.
- FIGS. 5 and 6 again shows externally curved tabs 3, only these are compared to FIG. 1 and 2 flat and thus form larger openings 7.
- FIGS. 1 to 5 While in the exemplary embodiments FIGS. 1 to 5 only one or four lobes 3 and 4 are designated, show the Representations Fig. 7 to 10 each eight inwards or towards rags curved on the outside.
- Vortex flow arises are in a box with rectangular base two nozzles 12a are provided, in which an air flow led through pressure nozzle parts 8 starts.
- the working area of the suction opening 6 is simultaneously with the eddy current in the suction nozzle flow 1 and with the shear force resulting from the separate nozzles 12a Currents burdened, so possibly on a pad adhering particles or gases detached from high density and, since already in motion, with a very low suction power required can be removed.
- the size of the flow area 6 '' and its angle of attack ⁇ can be adjusted to those in the suction opening Adjust the pressure and swirl ratios easily, as the a Coanda effect resulting from this configuration enables optimal beam steering.
- the beam serves, in a manner known per se, a tear-off edge K.
- suction nozzle tube 1 as the suction nozzle part 9 with the unbent Surfaces 6 '' formed in one piece.
- the nozzle can also be rotationally symmetrical be designed; this will have the same effect with a achieved single nozzle 12a.
- the gases extracted from the surface M to be processed or the solids contained in the flow are in the suction direction 2 by connecting lines with connected known filters and / or separators 13 and / or Capacitors, catalysts, etc. removed in a targeted manner.
- a bypass 14 can emerge from these devices Can be recirculated, for example by a Connection to the pressure nozzle parts 8.
- a suitable compressor 15, for example a one or multi-stage axial or radial fan allows over its inlets and outlets a very energy-saving operation the nozzle with optimal effect.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
- Die Bonding (AREA)
- Supply And Installment Of Electrical Components (AREA)
- Nozzles (AREA)
- Cleaning In General (AREA)
- Threshing Machine Elements (AREA)
- External Artificial Organs (AREA)
- Telephone Function (AREA)
- Punching Or Piercing (AREA)
Description
- Fig. 1
- Eine axiale Schnittdarstellung durch eine erste Ausführungsform einer erfindungsgemässen Düse mit einem nach aussen gebogenen Lappen und mit einem Kragen,
- Fig. 2
- den Schnitt B--B aus der Fig. 1,
- Fig. 3
- eine andere Ausführungsform der Düse, in Ansicht mit vier nach innen gebogenen Lappen,
- Fig. 4
- die Draufsicht auf die Lösung gemäss Fig. 3,
- Fig. 5
- eine beispielsweise Ausführungsform einer Düse mit vier nach aussen gebogenen Lappen in Ansicht,
- Fig. 6
- die Draufsicht auf die Lösung gemäss Fig. 5,
- Fig. 7
- eine weitere Ausführungsform der Düse mit acht nach innen gebogenen Lappen in Ansicht,
- Fig. 8
- die Lösung gemäss Fig. 7 in Draufsicht,
- Fig. 9
- mit acht nach aussen gebogenen Lappen in Ansicht,
- Fig. 10
- die Draufsicht auf die Lösung gemäss Fig. 9,
- Fig. 11
- bei der zusätzlich zu dem Saugdüsenrohr auch ein Druck-Düsenteil mittels zwei Düsen verwendet wird,
- Fig. 12
- eine Teilansicht einer zu Fig. 11 analogen Anordnung in einer schematischen Draufsicht, wobei seitliche Lappen zur Erzeugung einer tangentialen, zentralen Strömung eingezeichnet sind und
- Fig. 13,
- eine Variante zu Fig. 12 mit zwei Doppelwirbeln.
Claims (9)
- Saugdüse zur gezielten Aufnahme von festen Teilchen und/oder Strömungsmitteln, wobei an deren Saugdüsenrohr (1) auf einer Endseite eine Saugleitung anschließbar ist und dessen zweite Endseite als Absaugöffnung ausgebildet ist, wobei im Saugdüsenrohr (1), im Bereich seiner Absaugöffnung (6), wenigstens eine seitliche Öffnung (7) für eine sich in tangentialer Richtung zur Saugströmung (2) erstreckende weitere Strömung vorgesehen ist, dadurch gekennzeichnet, dass die seitliche Öffnung (7) durch einen oder mehrere, aus dem Saugdüsenrohr (1), nach aussen oder innen gebogene Lappen (3) gebildet ist.
- Saugdüse nach Anspruch 1, dadurch gekennzeichnet, dass das Saugdüsenrohr (1) um seine Absaugöffnung (6) mit einem konzentrischen Kragen (5) versehen ist.
- Saugdüse zur gezielten Aufnahme von festen Teilchen und/oder Strömungsmittel mit einem Sangdüsenrohr (1), wobei an deren Saugdüsenrohr (1) auf einer Endseite eine Saugleitung anschließbar ist und dessen zweite Endseite als Absaugöffnung ausgebildet ist, dadurch gekennzeichnet, dass sich das Saugdüsenrohr (1) in kastenförmig angeordnete äussere Führungswände (11) erstreckt wobei gegenüber der Absaugöffnung (6) eine Öffnung (6') in der gegenüberliegenden äusseren Führungswand (11) zur Ableitung der Saugströmung vorgesehen ist, dass im Bereich der Absaugöffnung (6) mehrere Lappen (4) aus der äusseren Führungswand (11) gebogen sind, dass in das innere der kastenförmig angeordneten äusseren Führungswände (11) zusätzlich zum Saugdüsenrohr (1) ein Druck-Düsenteil (8) führt, dass sich dieses Druck-Düsenteil (8) in zwei gegenüberliegende, sich in den Arbeitsbereich der Absaugöffnung (6) erstreckende getrennte Düsen (12a) teilt.
- Saugdüse nach Anspruch 1, dadurch gekennzeichnet, dass das Saugdüsenrohr (1) in seiner Absaugöffnung (6) mit einer Abrisskante (K) versehen ist.
- Verfahren zum Betrieb der Düse nach wenigstens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass zusätzlich zur Saugströmung (2) im Saugdüsenrohr (1) durch gegenläufige Biegung der Lappen (3, 4) tangentiale Teilströmungen mit gegenläufig rotierenden Bewegungskomponenten der Wirbelbewegung in Saugrichtung (2) erzeugt werden.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass zusätzlich zur Wirbelströmung, durch im Druck-Düsenteil (8) in zwei getrennte Düsen (12a) gepresste Strömungen (12'), eine Scherkraft im Arbeitsbereich der Absaugöffnung (6) mit der Wirbelströmungskomponente überlagert wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass im Strömungsbereich des Druck-Düsenteils (8) ein flächiger Körper (6'') angeströmt wird, welcher die Druckströmung (12') tangential in die Saugströmung leitet und die Wirbelbildung aktiviert.
- Verwendung der Düse nach den Ansprüchen 1 bis 4 zur Verbesserung des Wärmeübergangs in Wärmetauschern und des Zugs in Kaminen.
- Verwendung der Düse nach den Ansprüchen 1 bis 4 zur Elimination der Kavitation in Rohrbündel, Stoffseparatoren und Wärmetauschern.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH216594 | 1994-07-05 | ||
CH216594 | 1994-07-05 | ||
CH2165/94 | 1994-07-05 | ||
PCT/CH1995/000153 WO1996001071A1 (de) | 1994-07-05 | 1995-07-04 | Saugdüse, verfahren zum betrieb und verwendung der düse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0768834A1 EP0768834A1 (de) | 1997-04-23 |
EP0768834B1 true EP0768834B1 (de) | 1999-12-29 |
Family
ID=4227406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95922396A Expired - Lifetime EP0768834B1 (de) | 1994-07-05 | 1995-07-04 | Saugdüse, verfahren zum betrieb und verwendung der düse |
Country Status (7)
Country | Link |
---|---|
US (1) | US5924823A (de) |
EP (1) | EP0768834B1 (de) |
JP (1) | JPH10502275A (de) |
AT (1) | ATE188105T1 (de) |
AU (1) | AU2731095A (de) |
DE (1) | DE59507533D1 (de) |
WO (1) | WO1996001071A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012223337A1 (de) * | 2012-12-17 | 2014-06-18 | BSH Bosch und Siemens Hausgeräte GmbH | Trichterförmige Bodendüse mit Zyklon-Saugmund |
WO2018036603A1 (de) | 2016-08-22 | 2018-03-01 | Alfred Kärcher Gmbh & Co. Kg | Bodendüse für einen staubsauger, verfahren zum absaugen von textilflächen und staubsauger |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2795939B1 (fr) * | 1999-07-06 | 2001-09-28 | Claude Brenot | Nettoyeur de sol |
US6461086B1 (en) * | 2000-11-28 | 2002-10-08 | Kimberly-Clark Worldwide, Inc. | Method and apparatus for delivering particulate material to an air stream |
KR20040050617A (ko) * | 2002-12-10 | 2004-06-16 | 엘지전자 주식회사 | 진공청소기 |
CA2433702A1 (en) * | 2003-06-27 | 2004-12-27 | Cameron Dwight Bodie | Intake nozzle for vacuum particulate conveyor |
CN100382737C (zh) * | 2003-10-30 | 2008-04-23 | 乐金电子(天津)电器有限公司 | 吸尘器的吸嘴结构 |
US7111521B1 (en) | 2005-05-19 | 2006-09-26 | The United States Of America As Represented By The Secretary Of The Navy | Sampling system for moving fluid |
US9357892B2 (en) * | 2006-05-18 | 2016-06-07 | Seagate Technology Llc | Vortex-flow vacuum suction nozzle |
CN101427895B (zh) * | 2007-11-07 | 2012-01-11 | 乐金电子(天津)电器有限公司 | 吸尘器吸嘴转换装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1468467A (en) * | 1921-10-31 | 1923-09-18 | William W Farnsworth | Cleaning apparatus |
US1985849A (en) * | 1931-06-19 | 1934-12-25 | B F Sturtevant Co | Vacuum cleaner |
US2027543A (en) * | 1933-10-07 | 1936-01-14 | Electrolux Corp | Suction nozzle |
US2785432A (en) * | 1953-06-09 | 1957-03-19 | Chauncey L Rockwell | Vacuum cleaning head utilizing multiple suction cavities |
US3238557A (en) * | 1963-11-12 | 1966-03-08 | Berry W Foster | Vortex pickup device |
DE8902313U1 (de) * | 1989-02-27 | 1990-06-28 | Siemens AG, 1000 Berlin und 8000 München | Staubsaugermundstück |
-
1995
- 1995-07-04 WO PCT/CH1995/000153 patent/WO1996001071A1/de active IP Right Grant
- 1995-07-04 AU AU27310/95A patent/AU2731095A/en not_active Abandoned
- 1995-07-04 AT AT95922396T patent/ATE188105T1/de not_active IP Right Cessation
- 1995-07-04 DE DE59507533T patent/DE59507533D1/de not_active Expired - Lifetime
- 1995-07-04 US US08/765,211 patent/US5924823A/en not_active Expired - Fee Related
- 1995-07-04 EP EP95922396A patent/EP0768834B1/de not_active Expired - Lifetime
- 1995-07-04 JP JP8503597A patent/JPH10502275A/ja active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012223337A1 (de) * | 2012-12-17 | 2014-06-18 | BSH Bosch und Siemens Hausgeräte GmbH | Trichterförmige Bodendüse mit Zyklon-Saugmund |
DE102012223337B4 (de) * | 2012-12-17 | 2021-05-06 | BSH Hausgeräte GmbH | Trichterförmige Bodendüse mit Zyklon-Saugmund |
WO2018036603A1 (de) | 2016-08-22 | 2018-03-01 | Alfred Kärcher Gmbh & Co. Kg | Bodendüse für einen staubsauger, verfahren zum absaugen von textilflächen und staubsauger |
Also Published As
Publication number | Publication date |
---|---|
US5924823A (en) | 1999-07-20 |
EP0768834A1 (de) | 1997-04-23 |
ATE188105T1 (de) | 2000-01-15 |
WO1996001071A1 (de) | 1996-01-18 |
AU2731095A (en) | 1996-01-25 |
JPH10502275A (ja) | 1998-03-03 |
DE59507533D1 (de) | 2000-02-03 |
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