EP1081388A1 - Ventilateur - Google Patents

Ventilateur Download PDF

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Publication number
EP1081388A1
EP1081388A1 EP99117074A EP99117074A EP1081388A1 EP 1081388 A1 EP1081388 A1 EP 1081388A1 EP 99117074 A EP99117074 A EP 99117074A EP 99117074 A EP99117074 A EP 99117074A EP 1081388 A1 EP1081388 A1 EP 1081388A1
Authority
EP
European Patent Office
Prior art keywords
impeller
brush
fan
fan according
brush sections
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
Application number
EP99117074A
Other languages
German (de)
English (en)
Other versions
EP1081388B1 (fr
Inventor
Rolf Dipl.-Ing. Fichter
Ralf Dipl.-Ing. Widmann
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.)
LTG AG
Original Assignee
LTG Lufttechnische Komponenten GmbH
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
Application filed by LTG Lufttechnische Komponenten GmbH filed Critical LTG Lufttechnische Komponenten GmbH
Priority to EP99117074A priority Critical patent/EP1081388B1/fr
Priority to DE59912116T priority patent/DE59912116D1/de
Priority to JP2000004399A priority patent/JP2001082395A/ja
Priority to US09/491,412 priority patent/US6290456B1/en
Publication of EP1081388A1 publication Critical patent/EP1081388A1/fr
Application granted granted Critical
Publication of EP1081388B1 publication Critical patent/EP1081388B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/422—Discharge tongues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel

Definitions

  • the invention relates to a fan with the The preamble of claim 1 mentioned features.
  • a fan is known from DE 30 48 571 A1, which is designed as a cross-flow fan. Between its suction side and its pressure side an undeformable locking device arranged, the with the cross flow fan also as a vortex generator can serve. Between the impeller respectively the fan blades arranged on the impeller and a sealing gap is formed in the locking device. This sealing gap is in the known locking element also necessary because the impeller is always one Has residual unbalance, does not run 100 percent and / or for example with shock loads dynamic deformation occurs during operation.
  • the aerodynamic properties of the cross flow fan However, are among other things the size of the Sealing gap dependent.
  • DE 195 27 605 A1 includes one Locking device known between a stator and a rotor of a turbomachine is arranged.
  • the locking device can be designed as a brush be the gap with their bristle ends very much keeps small.
  • this variant has the disadvantage that that a clearly audible rotating sound when rotating Rotor is generated.
  • the rotating sound can be as Whistle or howl can be heard.
  • it can be annoying for the users of the fans be when this rotating sound occurs.
  • the ventilator has an impeller, which has several fan blades owns. Furthermore, between the suction side and Pressure side of the fan a locking device arranged. According to the locking device as a strip-shaped brush with several to each other spaced brush sections formed. It has surprisingly been found that with the locking device according to the invention the noise emission of the fan significantly reduced is, although now several brush sections with their ends arranged opposite the impeller are. It is also advantageous that the locking device is designed as a brush Sealing gap can be set very small what the aerodynamic properties of the fan favorably influenced.
  • the invention Locking device is not only on cross-flow fans limited of the type mentioned. Rather, the invention Locking device also for radial fans and use in so-called axial fans, the have a propeller or the like as an impeller.
  • the locking device according to the invention is also here arranged between suction and pressure side.
  • the impeller is designed as a cross-flow fan impeller is and that the brush sections in the direction of travel are spaced from each other. When rotating of the impeller - if you look at a fan blade - So this moves on two brush sections one after the other.
  • the impeller as a cross flow fan impeller trained, it is preferably provided that the Locking device on a vortex generator of the cross flow fan is arranged or the vortex former forms.
  • this is Impeller designed as an axial fan impeller and the brush sections are transverse to the direction of travel spaced from each other.
  • the Locking device all around at least in regions is arranged in a housing opening in which the Axial fan impeller is present or is stored.
  • the locking device according to the invention achieved that the pressure equalization between pressure side and suction side can be significantly reduced because of the brush-shaped design of the locking element an infinitesimally smaller, i.e. towards zero outgoing sealing gap can be realized.
  • a cross flow fan is provided that the Brush sections also transverse to the direction of the Impeller are spaced from each other. It has Surprisingly shown that with such Blocking element the noise emission even further can be reduced.
  • the brush sections also spaced apart from one another in the running direction of the impeller are arranged. This also applies to the axial fan further noise reduction possible.
  • An embodiment is particularly preferred a fan where the locking device is accurate has two brush sections. This configuration is advantageous in that at low Comparatively very good noise reduction is achieved.
  • An embodiment is also preferred in the the brush sections that are towards the Extend impeller, run parallel to each other.
  • it can be provided that the distance between the brush sections in the direction enlarged to the impeller.
  • a V-shaped arrangement of the brush sections provided his.
  • An embodiment of the locking device is preferred, has the brush sections that form continuous stripes.
  • the brush sections preferably over the entire length of the Extend impeller.
  • the brush sections revolve are arranged in the housing so that a closed Strip is formed.
  • the strip-shaped brush sections bristle-free zones on. So the brush sections are not trained throughout.
  • a bristle section can also several individual tufts of bristles can be provided, which are arranged in a row next to each other.
  • Another embodiment of a locking device is characterized in that the impeller facing ends of the bristles of the brush sections have different distances from the impeller. With this configuration can be different by means of a long bristled brush advantages mentioned above can be achieved.
  • Polyamide is preferably used as the bristle material.
  • the Bristles - especially on their impeller facing End polyamide are provided.
  • suitable others to use materials.
  • the bristle metals preferably steel, or Metal alloys, thin metal strips or -Wires, horn or composite materials are provided be, for example coated with plastic Find metal wires.
  • the bristle metals preferably steel, or Metal alloys, thin metal strips or -Wires, horn or composite materials are provided be, for example coated with plastic Find metal wires.
  • an inserted plastic film between the bristles advantageous.
  • bristles natural bristles can also be used.
  • the locking device a single-row strip brush is like, for example in the aforementioned DE 195 27 605 A1 is shown, this single-row strip brush for Formation of the brush sections, however, a brush expansion element having. This can be done if necessary subsequently on a single-row strip brush be attached.
  • the bristle spreading element introduced so that part of the bristles - figuratively seen - to the left and the other part to the right is deflected.
  • the bristle expansion element is preferred moved so far between the bristles until it almost touches the bristle holder.
  • Figure 1 shows a cross-flow fan in side view 1, which comprises a housing 2.
  • a housing 2 On the housing 2 is an air guiding device 3, which a Air baffle 4 and a so-called vortex former 5 includes.
  • the cross flow fan 1 a rotatably mounted impeller 6, which can be driven in rotation is. With the cross-flow fan it will Impeller 6 is rotated about its longitudinal axis 7.
  • the impeller 6 has fan blades 8, those between two axially spaced, not shown Support discs are held.
  • When rotating the impeller 6 forms on the cross flow fan 1 a suction side 9 and a pressure side 10 out.
  • the direction of rotation of the impeller 6 is thus in Clockwise set what is indicated by an arrow 11 is indicated.
  • the cross-flow fan 1 has a locking device 12 on that between the suction side 9 and the Print page 10 is arranged.
  • the locking device 12 at the end 13 of the vortex generator 5 on the impeller side is arranged.
  • the locking device 12 is as strip-shaped brush 14 formed, the multiple here includes two, brush sections 15 and 16.
  • the brush sections 15 and 16 extend in Direction to the outer surface of the impeller, i.e. in Direction to the fan blades 8.
  • the impeller side Have ends of the brush sections 16 and 17 seen in the direction of rotation 11 of the impeller 6 one Distance from each other.
  • the present embodiment 1 form the brush sections 15 and 16 - seen in cross section - a V.
  • FIG. 2 schematically shows an axial fan 18, which has an impeller 19 which is about an axis of rotation 20 is rotatably mounted.
  • the impeller has fan blades 21, which extends from an impeller core 22 extend radially outward.
  • the impeller 19 is in a housing 23 which has an opening 24 has. That within the breakthrough 24th arranged impeller 19 generates a during operation Suction side 25 and a pressure side 26 like this Figure 3 can be seen.
  • a locking device 27 is arranged, which is designed as a strip-shaped brush 28 is.
  • the brush 28 has two Brush sections 29 and 30, which differ from the Breakthrough 24 in the direction of the fan blades 21 extend. It can be seen that the brush sections 29 and 30 fastened in a bristle carrier 32 are arranged on the opening 24. The impeller-side ends of the brush sections 29 and 30 point across the direction of rotation 32 of the Impeller 19- a distance from each other. In the present Embodiment extend the Brush sections 29 and 30 starting from the bristle holder 31- V-shaped towards the fan blades 21.
  • the strip-shaped Brush 28 revolving within the opening 24 is trained. It can be a striped brush 28 may be provided as an elongated brush is present, but their ends are attached to each other are, so that a circular, closed contour results. In Figure 2 are only some bristles 33 of the brush 28 are shown.
  • Figure 4 shows a locking device 12 or 27, the V-shaped brush sections 15 or 29 and 16 or 30 having. From Figure 4 it can be seen that a single-row strip-shaped brush 12 respectively 27 is used, but the bristles 33 divided by means of a bristle spreading element 34 and kept apart so that the impeller side Ends of the brush sections 15, 16, 29, 30 have the above-mentioned distance from each other. It can be provided that for fixing the Bristle spreading element on the bristle holder 17 respectively 31 can be determined.
  • FIG. 6 shows a second embodiment of the Locking device 12 or 27. Same Parts like in the previous figures are with provided the same reference numerals. In this respect, is on referenced their description. The following is therefore only dealt with differences.
  • Figure 8 shows a third embodiment of a Locking device 12 or 27, in which the Brush sections 15, 29 and 16, 30 thereby are formed that bristles 33 with different Length or the Bristles 33 subsequently cut off at their ends be so they have different distances to the impeller 8, 19.
  • the one shown in Figure 8 Brush 14 or 28 can be designed in this way be that the bristle ends are generally triangular or sawtooth-shaped contour.
  • the locking device 12 or 27 the impeller 6 and 19 are assigned to the peaks 36 and 37 in succession with the rotating impeller touched by the fan blades 8 or the fan blades 8 in succession at the tips 36 and 37 walk past.
  • the brush sections 15, 29 and 16, 30 formed all round closed, so that the fan blades 21 with rotation of the impeller 19 to the Run around tips 36 and 37.
  • the tips 36, 37 are so aligned that the brush sections lie transverse to the direction of rotation 32.
  • the bristle sections 8 have bristle-free zones 35, as shown in Figure 7.
  • FIG. 9 shows a fourth exemplary embodiment a locking device 12 or 27.
  • the brush sections 15, 29 and 16, 30 a distance from each other have, but are not arranged in a V-shape, as in the previous embodiments is given, but essentially parallel to each other.
  • the brush sections are formed by individual bristle tufts 38, with a plurality of bristle tufts 38 in series with one another are arranged so that this row transversely (cross flow fan) or in the direction of rotation (axial flow fan) lies.
  • individual bristle tufts 38 of a brush section 15 or 29 are spaced apart.
  • the Tufts of bristles 38 can, however, also be so close together be arranged that quasi a continuous Brush section 15 and 29 formed is.
  • the bristle tufts 38 of the other brush section 16 and 30 are preferably like this attached to the bristle carrier 17 or 31, that they have a bristle-free zone 35 of the brush section 15 and 29 arranged opposite one another are.
  • the individual tufts of bristles 38 each Brush sections 15, 29 and 16, 30, respectively are staggered like this can be seen from Figure 10.
  • Figure 11 shows a further embodiment an axial fan, which is essentially the Embodiment of Figure 2 corresponds. Differently is just that the striped Brush 28 not on the opening 24, but on the radial ends of the fan blades 21 attached is. The free ends of the bristles 33 of the brush 28 form an infinitesimal gap for breakthrough 24. In the embodiment of Figure 11 is running thus the brush 28 with the impeller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP99117074A 1999-08-31 1999-08-31 Ventilateur Expired - Lifetime EP1081388B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP99117074A EP1081388B1 (fr) 1999-08-31 1999-08-31 Ventilateur
DE59912116T DE59912116D1 (de) 1999-08-31 1999-08-31 Ventilator
JP2000004399A JP2001082395A (ja) 1999-08-31 2000-01-13 ファン
US09/491,412 US6290456B1 (en) 1999-08-31 2000-01-26 Ventilator with brush type blocking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99117074A EP1081388B1 (fr) 1999-08-31 1999-08-31 Ventilateur

Publications (2)

Publication Number Publication Date
EP1081388A1 true EP1081388A1 (fr) 2001-03-07
EP1081388B1 EP1081388B1 (fr) 2005-06-01

Family

ID=8238894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99117074A Expired - Lifetime EP1081388B1 (fr) 1999-08-31 1999-08-31 Ventilateur

Country Status (4)

Country Link
US (1) US6290456B1 (fr)
EP (1) EP1081388B1 (fr)
JP (1) JP2001082395A (fr)
DE (1) DE59912116D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202974A1 (fr) * 2015-06-17 2016-12-22 Multi-Wing International A/S Système de refroidissement et ventilateur axial pour système de refroidissement

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50206223D1 (de) * 2001-10-22 2006-05-18 Sulzer Pumpen Ag Wellenabdichtungsanordnung für eine Pumpe zur Förderung heisser Fluide
US7044288B2 (en) * 2002-04-09 2006-05-16 K-Tron Technologies, Inc. Bulk material pump feeder with reduced disk jamming
DE102004055439A1 (de) * 2004-11-17 2006-05-24 Rolls-Royce Deutschland Ltd & Co Kg Strömungsarbeitsmaschine mit dynamischer Strömungsbeeinflussung
US20070231128A1 (en) * 2006-03-31 2007-10-04 Caterpiller Inc. Fan assembly
FR2913053B1 (fr) * 2007-02-23 2009-05-22 Snecma Sa Procede de fabrication d'un carter de turbine a gaz en materiau composite et carter ainsi obtenu
WO2014079864A1 (fr) * 2012-11-20 2014-05-30 Multi-Wing International A/S Système de refroidissement et ventilateur axial pour système de refroidissement
US20170241430A1 (en) * 2016-02-19 2017-08-24 Chaun-Choung Technology Corp. Combined fan and cooling device using the same
EP3239533A1 (fr) 2016-04-29 2017-11-01 STEINBEIS GMBH & CO. Für TECHNOLOGIETRANSFER Turbomachine axiale
US10655645B2 (en) * 2018-03-28 2020-05-19 Lenovo Enterprise Solutions (Singapore) Pte. Ltd. Fan systems including brushes and bristles for self-cleaning

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048571A1 (de) * 1980-12-22 1982-07-22 Ltg Lufttechnische Gmbh, 7000 Stuttgart Querstromventilator
US4398508A (en) * 1981-02-20 1983-08-16 Volvo White Truck Corporation Engine cooling fan construction
DE8614073U1 (de) * 1986-05-24 1988-04-07 Daimler-Benz Ag Kühleinrichtung an einer Brennkraftmaschine
US5183382A (en) * 1991-09-03 1993-02-02 Caterpillar Inc. Low noise rotating fan and shroud assembly
US5297395A (en) * 1992-02-24 1994-03-29 Kabushiki Kaisha Toshiba Air conditioner using rotary-type heat exchangers
DE19527605A1 (de) * 1995-07-28 1997-02-27 Mtu Muenchen Gmbh Bürstendichtung für Turbomaschinen
US5752802A (en) * 1996-12-19 1998-05-19 Solar Turbines Incorporated Sealing apparatus for airfoils of gas turbine engines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526509A (en) * 1983-08-26 1985-07-02 General Electric Company Rub tolerant shroud
DE4310104C2 (de) * 1993-03-27 1997-04-30 Deutsche Forsch Luft Raumfahrt Verfahren zur Reduzierung der Schallemission sowie zur Verbesserung der Luftleistung und des Wirkungsgrads bei einer axialen Strömungsmaschine und Strömungsmaschine
US5941685A (en) * 1997-10-14 1999-08-24 General Electric Company Brush seal for use on bumpy rotating surfaces

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048571A1 (de) * 1980-12-22 1982-07-22 Ltg Lufttechnische Gmbh, 7000 Stuttgart Querstromventilator
US4398508A (en) * 1981-02-20 1983-08-16 Volvo White Truck Corporation Engine cooling fan construction
DE8614073U1 (de) * 1986-05-24 1988-04-07 Daimler-Benz Ag Kühleinrichtung an einer Brennkraftmaschine
US5183382A (en) * 1991-09-03 1993-02-02 Caterpillar Inc. Low noise rotating fan and shroud assembly
US5297395A (en) * 1992-02-24 1994-03-29 Kabushiki Kaisha Toshiba Air conditioner using rotary-type heat exchangers
DE19527605A1 (de) * 1995-07-28 1997-02-27 Mtu Muenchen Gmbh Bürstendichtung für Turbomaschinen
US5752802A (en) * 1996-12-19 1998-05-19 Solar Turbines Incorporated Sealing apparatus for airfoils of gas turbine engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202974A1 (fr) * 2015-06-17 2016-12-22 Multi-Wing International A/S Système de refroidissement et ventilateur axial pour système de refroidissement
US10704561B2 (en) 2015-06-17 2020-07-07 Multi-Wing International A/S Cooling system and an axial fan for a cooling system

Also Published As

Publication number Publication date
DE59912116D1 (de) 2005-07-07
EP1081388B1 (fr) 2005-06-01
US6290456B1 (en) 2001-09-18
JP2001082395A (ja) 2001-03-27

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