EP0768834A1 - Saugdüse, verfahren zum betrieb und verwendung der düse - Google Patents
Saugdüse, verfahren zum betrieb und verwendung der düseInfo
- Publication number
- EP0768834A1 EP0768834A1 EP95922396A EP95922396A EP0768834A1 EP 0768834 A1 EP0768834 A1 EP 0768834A1 EP 95922396 A EP95922396 A EP 95922396A EP 95922396 A EP95922396 A EP 95922396A EP 0768834 A1 EP0768834 A1 EP 0768834A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- nozzle
- suction nozzle
- flow
- opening
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims description 2
- 238000003379 elimination reaction Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 210000002105 tongue Anatomy 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 241001417527 Pempheridae Species 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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 for the targeted reception of solid particles and / or flow medium, a suction line being connected to the suction nozzle tube on one end side and the second end side of which is designed as a suction opening. A method for operating and using this nozzle is also to be described.
- Known nozzles usually work more or less orthogonally to a surface and, if they are not guided on the surface, tend to stick, i.e. the suction opening sucks on the surface to be processed and prevents the removal of the particles and / or the fluid.
- this nozzle should only cause little noise during its operation and should not tend to clog the suction opening.
- the nozzle should also form a flow which is favorable for heat exchanger, chimney and material separator applications.
- the above object is achieved by the features of claim 1.
- the advantage of the invention is to be seen in the fact that the described embodiment creates a vortex in the suction nozzle, a shear force being formed in and below the suction opening which detaches the solid particles and / or fluid to be removed and moves them puts.
- the axially parallel longitudinal vortices generated by the nozzle are favorable for improving the heat transfer in heat exchangers, chimneys, heating systems, etc. They eliminate the inlet cavitation that occurs with every liquid flow.
- the nozzle expediently has a tubular shape; however, if structural dimensions so require, it could also be designed as a channel.
- the embodiment according to claim 4 is particularly favorable if the vortex formation is to be controlled, for example, adaptively. This can be done by supplying external energy, bypass, etc.
- the concentric collar mentioned in claim 5 allows the favorable suction effect to be expanded beyond the suction opening.
- the embodiment according to claim 6 is particularly advantageous; it could be used in practice due to its small dimensions for cleaning devices of almost any type, and in particular for street sweepers etc.
- the pressure nozzle part provided in addition to the suction nozzle tube acts from the edge areas with the resulting shear force to the central suction opening and supports the formation of eddies.
- the tear-off edge listed in claim 7 serves to support the detachment of the interface flow in the working area of the nozzle.
- the method according to claim 8 causes in a simple manner also inside the suction nozzle tube an opposite, spiral vortex formation which serves to hold the medium.
- the pressure conditions can be superimposed and adjusted in order to achieve the shear effect desired in the work area.
- the setting of the relationships can be achieved empirically by changing the geometric relationships or by dividing the partial flows accordingly.
- the development according to claim 10 uses the known Coanda effect for targeted flow control.
- FIG. 1 shows an axial sectional view through a first embodiment of a nozzle according to the invention with a tab bent outwards and with a collar
- FIG. 2 shows section B - B from FIG. 1, 3 shows another embodiment of the nozzle, in view with four lobes bent inwards,
- FIG. 4 shows the top view of the solution according to FIG. 3,
- FIG. 5 shows an example of an embodiment of a nozzle with four outwardly bent tabs in view
- FIG. 6 shows the top view of the solution according to FIG. 5
- FIG. 7 shows a further embodiment of the nozzle with eight inwardly curved tabs in view
- FIG. 8 is a top view of the solution according to FIG. 7,
- Pressure nozzle part is used by means of two nozzles
- Fig. 12 is a partial view of an arrangement analogous to Fig. 11 in a schematic plan view, with lateral
- Fig. 13 a variant of Fig. 12 with two double vertebrae.
- a suction nozzle tube is designated by 1 in a vertical sectional view; the suction direction 2 is indicated by a vertical arrow.
- the suction nozzle tube 1 is provided at the bottom with an outwardly bent tab 3 and connected at the top to a suction line SL.
- the area around the suction opening 6 of the suction nozzle tube 1 has a concentric collar 5.
- the resulting flows are drawn with straight or curved arrows 12.
- FIG. 2 which corresponds to the section BB from FIG. 1, in addition to the parts described above, the opening 7 in the tube 1 which is produced by bending the tab 3 can be seen.
- FIGS. 3 to 10 variants of the object FIGS. 1 and 2 are shown, the same functional parts being provided with the same reference symbols in all the figures.
- Fig. 3 the tabs 4, which act analogously to FIGS. 1 and 2, are bent toward the inside of the tube.
- the flow 12 acting tangentially to the suction direction 2 through the opening 7 also results in a circular flow and is indicated by a corresponding circular arrow.
- FIGS. 5 and 6 shows tabs 3 bent outwards, only these are flat compared to FIGS. 1 and 2 and thus form larger openings 7.
- FIGS. 7 to 10 While only one or four tabs 3 or 4 are designated in the exemplary embodiments in FIGS. 1 to 6, the illustrations in FIGS. 7 to 10 each show eight tabs bent inwards or outwards.
- a suction pipe 1 according to the invention is suitable for any flowable medium and can therefore be connected to any suction devices.
- a particular advantage can be seen in the fact that the vertical suction opening can practically not become blocked because of the vortex formation - Spirally acting in the suction direction - Solid particles also separate from one another, the suction effect being effectively maintained. The same can be observed if the intake pipe lies flat on a flat surface; it can be lifted off the surface and / or moved on the surface without extreme force.
- FIG. 11 shows a variant of a nozzle that is particularly suitable for cleaning walkways, streets and squares:
- two nozzles 12a are provided in a box with a rectangular base area, in which an air flow led through pressure nozzle parts 8 begins.
- the working area of the suction opening 6 is loaded simultaneously with the eddy current in the suction nozzle flow 1 and with the shear force of the flows resulting from the separate nozzles 12a, so that any particles or gases of high density adhering to a base are removed and, since it is already in motion, can be removed with a very low suction power.
- the size of the flow area 6 "and its angle of attack ⁇ can easily be matched to the pressure and swirl conditions to be set in the suction opening, since the Coanda effect resulting from this configuration enables optimal beam guidance.
- the necessary change in direction of the beam serves, in a manner known per se, a tear-off edge K.
- the suction nozzle tube .1 is designed in one piece as a suction nozzle part 9 with the unbent surfaces 6 ".
- the nozzle can also be configured to be rotationally symmetrical; the same effect is thereby achieved with a single nozzle 12a.
- the gases extracted from the surface M to be machined or the solids contained in the flow are specifically removed in the suction direction 2 by connecting lines with associated, known filters and / or separators 13 and / or capacitors, catalysts, etc.
- the flow emerging from these devices can be recirculated by a bypass 14, for example by a connection to the pressure nozzle parts 8.
- a suitable compressor 15 for example a single-stage or multi-stage axial or radial fan, permits very energy-saving operation of the nozzle with optimum effect via its inlets and outlets.
- This variant is among others intended for installation in existing mobile street sweeping machines and, in addition to the advantage of a low energy requirement, in particular a very low level of dust and noise; the fan 15 used can work in an almost closed air circuit and can be installed in the vehicles in a space-saving manner and can be optimally silenced acoustically.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
- Die Bonding (AREA)
- Punching Or Piercing (AREA)
- Telephone Function (AREA)
- Threshing Machine Elements (AREA)
- External Artificial Organs (AREA)
- Nozzles (AREA)
- Cleaning In General (AREA)
- Supply And Installment Of Electrical Components (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH216594 | 1994-07-05 | ||
CH2165/94 | 1994-07-05 | ||
CH216594 | 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 true EP0768834A1 (de) | 1997-04-23 |
EP0768834B1 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) |
Families Citing this family (10)
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 |
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 |
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 EP EP95922396A patent/EP0768834B1/de not_active Expired - Lifetime
- 1995-07-04 JP JP8503597A patent/JPH10502275A/ja active Pending
- 1995-07-04 AT AT95922396T patent/ATE188105T1/de not_active IP Right Cessation
- 1995-07-04 AU AU27310/95A patent/AU2731095A/en not_active Abandoned
- 1995-07-04 WO PCT/CH1995/000153 patent/WO1996001071A1/de active IP Right Grant
- 1995-07-04 US US08/765,211 patent/US5924823A/en not_active Expired - Fee Related
- 1995-07-04 DE DE59507533T patent/DE59507533D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9601071A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2731095A (en) | 1996-01-25 |
DE59507533D1 (de) | 2000-02-03 |
WO1996001071A1 (de) | 1996-01-18 |
US5924823A (en) | 1999-07-20 |
JPH10502275A (ja) | 1998-03-03 |
ATE188105T1 (de) | 2000-01-15 |
EP0768834B1 (de) | 1999-12-29 |
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