EP1544472B1 - Ventilateur-canal - Google Patents

Ventilateur-canal Download PDF

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Publication number
EP1544472B1
EP1544472B1 EP04029400.1A EP04029400A EP1544472B1 EP 1544472 B1 EP1544472 B1 EP 1544472B1 EP 04029400 A EP04029400 A EP 04029400A EP 1544472 B1 EP1544472 B1 EP 1544472B1
Authority
EP
European Patent Office
Prior art keywords
fan according
impeller
tube fan
blades
guiding device
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
EP04029400.1A
Other languages
German (de)
English (en)
Other versions
EP1544472A3 (fr
EP1544472A2 (fr
Inventor
Gerhard Ruck
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.)
Ruck Ventilatoren GmbH
Original Assignee
Ruck Ventilatoren 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 Ruck Ventilatoren GmbH filed Critical Ruck Ventilatoren GmbH
Publication of EP1544472A2 publication Critical patent/EP1544472A2/fr
Publication of EP1544472A3 publication Critical patent/EP1544472A3/fr
Application granted granted Critical
Publication of EP1544472B1 publication Critical patent/EP1544472B1/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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • 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
    • F04D17/06—Helico-centrifugal pumps
    • 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
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material

Definitions

  • the invention relates to a fan with rotationally symmetrical housing for conveying air or other gases.
  • Such fans are used in particular at the beginning, inside or at the end of pipelines. They are therefore often called tube fans.
  • the field of application of the pipe ventilator according to the invention is not limited to use in piping systems.
  • tube fans There are a number of different constructions of tube fans known.
  • a first type of tube fans see, eg US 2003/0206800
  • a second type of tube fans also has a bulbous housing.
  • Diagonallaufrad a radially aligned diffuser connects.
  • a Diagonallaufrad consisting of a support plate and a number of two-dimensionally curved, non-profiled sheet metal blades, and an axially adjacent diffuser has a third type of tube fans.
  • the present invention seeks to provide a tubular fan with a very high efficiency and a high power density with a low overall noise.
  • the tube fan according to the invention is characterized in that the diaphragm fan, consisting of cover plate, support plate and a number of blades attached to these two discs in the axial direction, a nozzle is connected downstream.
  • the impeller blades and the guide vanes of the pipe ventilator according to the invention are curved in three dimensions and profiled in order to be able to take account of the different angles of incidence along the leading edges of the blades.
  • the profiling is a substantially continuous increase of the blade cross-section up to a maximum and an adjoining substantially continuous decrease of the blade cross-section.
  • the pipe ventilator according to the invention in particular does not need to have an inlet nozzle when the impeller cover plate widens like a nozzle.
  • the seal between suction and pressure chamber can be made at the impeller outlet.
  • a diffuser can be connected downstream of the distributor.
  • the housing of the tube fan can be ideally made of a one-piece cylindrical tube.
  • the tube fan 10 has an outer housing shell 12, which encloses a circular cylindrical, straight cylinder interior.
  • a left and right flange 18, 20 are fixedly mounted externally on the housing shell 12, which project beyond the housing jacket 12 in the axial direction (axis 22).
  • flanges 18, 20 can be connected at both ends of the housing shell 12 and thus on the pipe fan 10 each have a pipe 24, 26 of a pipe not shown.
  • the tube fan 10 can thus be installed between the tubes 24, 26.
  • the outer diameter 28 and 30 of the tubes 24 and 26 thus corresponds in the present example also the Außi tomesser 32 of the housing shell 12.
  • the tubes 24, 26 could each have a different diameter from the outer diameter and are connected via a corresponding pipe adapter to the pipe fan.
  • the pipe ventilator 10 has a diagonal impeller 40, which is present on the input side of this fan 10. Downstream of this Diagonallaufrades 40 is a guide 42 and then the same still formed a diffuser 44 following the diagonal impeller 40 within the tubular fan 10.
  • the gaseous flow medium forced through the tube fan 10 by means of the diagonal impeller 40 flows around a central interior of the tube ventilator 10, which is delimited outwardly by the carrier disc 50 of the tube ventilator 10 and an intermediate casing 52 which adjoins the carrier disc 50 in a streamlined manner.
  • the carrier disc 50 curves at the end in the axial direction, so that it abuts aerodynamically on the aligned in the axial direction intermediate jacket 52.
  • the flow medium thus flows radially outward on the support disk 50 and past the intermediate casing 52.
  • the Diagonallaufradrad 40 has circumferentially distributed blades 54 which are fixed with its one side to the support plate 50 and with its opposite other side to a cover plate 56.
  • the blades 54 are profiled cross-section in the present case and also wound.
  • its inflow-side leading edge 55 which is aligned approximately perpendicular to the flow direction (arrow 58) of the flowing flow medium, is provided with a fillet.
  • the outflow-side outlet edge 60 which is likewise oriented approximately perpendicular to the diagonal flow (arrow 62) leaving the downstream side, has the shape of a point.
  • the cross-section of the individual blades 54 is not constant in the region between the support disk 50 and the cover disk 56, but varies in size.
  • each blade 54 decreases from the region of the cover disk 56 to the region of the support disk 50, so that the blade 54 is the least curved in the region of the support disk 50 and the most curved in the region of the cover disk 56.
  • the decrease in curvature could also be opposite, with the strongest curvature in the region of the support disk. This depends on the different flow conditions along the blades 54 between their respective connection area on the cover disk 56 and on the support disk 50 off.
  • the leading edge 55 and the trailing edge 60 may be present instead of just curved.
  • the curvature of all vanes 54 of the diagonal impeller 40 may have a so-called forward curvature or reverse curvature. Which curvature is selected depends on whether or not the velocity energy present there is still to be converted into pressure downstream of the impeller. With forwardly curved blades, a greater deflection of the flow medium in the region of the blades is achieved compared to backward curved blades, which leads to a greater energy conversion with the requirement that the velocity energy is still downstream, for example by means of the diffuser 44 in pressure.
  • the cover plate 56 runs on the inflow side with a radially oriented end wall 61, which is very narrow in the present case.
  • the radially inwardly bulged starting portion 56.1 of the cover plate 56 to the end wall 61 runs relatively pointed.
  • the downstream end portion 56.2 of the cover plate 56 has a much stronger downstream tip, as it has the initial region 56.1.
  • an angled annular gap 68 is present in the present case, which can not be avoided in principle due to the stationary housing wall 12 and the rotating Diagonallaufrades 40.
  • this angled annular gap 68 is a sealing element 70, the distance in a engages in the cover plate 56 angularly shaped annular groove 72.
  • This angled annular gap 68 represents a flow labyrinth and prevents or impedes that the gas flow leaving the blades 54 flows backwards through the annular gap 68 into the intermediate space 74 which is present between the cover disk 56 and the housing jacket 12. The stronger such a return flow is formed, the lower the efficiency of the tube fan 10.
  • the flow leaving the diagonal impeller 40 then flows through the region of the guide device 42.
  • guide vanes 80 are arranged between the intermediate casing 52 and the housing wall. In the present case, these guide vanes 80 are more curved in their outer region 80.1, which faces the housing shell 12, than in its inner region 80.2, which faces the intermediate casing 52. In this way, the gas flow leaving the diagonal impeller 40 in a helical, diagonal direction is deflected in an axial flow direction (arrow 84).
  • the guide vanes 80 are wound three-dimensionally and formed profiled.
  • the outer side of the wall section 52.1 of the intermediate jacket 52 is planar in the area of the guide vanes 80. However, it is also possible to increase the distance between the intermediate jacket 52 and the housing shell 12 in the flow direction by the intermediate jacket 52 downstream has a decreasing diameter.
  • a transverse wall 86 is fixed to the intermediate casing 52, in the region of the blades 80, to which the motor 88 driving the diagonal impeller 40 is fastened.
  • the diffuser 44 is formed downstream thereof.
  • This diffuser 44 is structurally realized by a flow-ring channel which enlarges on the outflow side between the housing jacket 12 and the intermediate jacket 52.
  • the intermediate jacket 52 is inclined in the region of the diffuser 44 with an angle 90 which is greater than zero degrees and less than 30 degrees, against the axial direction 22.1.
  • this wall section 52.2 is also planar, as is the wall section 52.1 in the region of the guide device 42.
  • the wall portion 52.2 may be bent in the axial direction, so that the flow ring channel widens in cross-section reinforced in the flow direction.
  • the in Fig. 2 illustrated tube fan 10.2 differs from the tube fan 10 in principle in particular in that its housing shell 12 is surrounded by an insulating sleeve 92 performing insulating material 94.
  • This insulating sleeve 92 is annularly bordered by a respective end Z-shaped tubular frame 96.
  • This frame 96 surrounds the front edge of the housing shell 12 with a bead 98.
  • the annular shape of the housing shell 12 and thus the tube fan 10.2 - the same is true for the tube fan 10 - makes attaching an external insulation structurally very simple. Thus, no bulged wall portions of the tube fan are present, as is the case in the prior art, which can disguise only relatively complex with material outside.
  • the defined by the intermediate sheath 52 sleeve is designed to sound permeable and thereby acts sound-absorbing.
  • the intermediate jacket is formed at least in the wall portion 52.2 as a perforated plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (16)

  1. Ventilateur de conduit (10, 10.2) pour fluides gazeux,
    - avec une roue diagonale (40) présentant plusieurs pales (54) et dont les pales (54) sont fixées à un disque porteur (50) et à un disque de recouvrement (56),
    - et avec un dispositif de guidage (42) se raccordant à la roue diagonale (40) du côté du flux sortant et destiné à augmenter la pression du fluide, dispositif qui se raccorde en direction axiale (22.1) à la roue diagonale (40),
    caractérisé en ce que les pales (80) du dispositif de guidage (42) sont gauchies dans trois dimensions.
  2. Ventilateur de conduit selon la revendication précédente, caractérisé en ce qu'un canal d'écoulement s'agrandissant progressivement du côté du flux sortant se raccorde au dispositif de guidage (42).
  3. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que son boîtier cylindrique creux possède une enveloppe de boîtier (12) qui présente une dimension de section constante le long de son axe de cylindre (22).
  4. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que les pales (54) de la roue (40) sont profilées.
  5. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que les pales (80) du dispositif de guidage (42) sont profilées.
  6. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que les pales (54) de la roue (40) sont gauchies dans trois dimensions.
  7. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce qu'un passage annulaire (68) est présent entre le disque de recouvrement (56) de la roue (40) et un boîtier (12) contenant la roue (40).
  8. Ventilateur de conduit selon la revendication 7, caractérisé en ce que le passage annulaire (68) est réalisé du genre labyrinthe.
  9. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que l'extrémité côté flux sortant (56.2) du disque de recouvrement (56) de la roue (40) est orientée approximativement en direction axiale (22.1), de sorte que le disque de recouvrement (56) présente une courbure progressive en direction du dispositif de guidage (42).
  10. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que le disque de recouvrement de la roue s'élargit à la manière d'une buse à l'encontre de la direction d'écoulement.
  11. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que l'extrémité côté flux sortant du disque porteur (50) de la roue (40) est orientée approximativement en direction axiale (22.1), de sorte que le disque porteur (50) présente, à la sortie de la roue, une courbure progressive en direction du dispositif de guidage (42).
  12. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que
    - l'enveloppe de boîtier (12) est entourée d'un matériau (94) absorbant les sons,
    - l'enveloppe de boîtier (12) est perméable aux sons.
  13. Ventilateur de conduit selon la revendication 12, caractérisé en ce que le matériau (94) absorbant les sons est entouré d'une enveloppe de boîtier supplémentaire (92).
  14. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que le dispositif de guidage (42) est réalisé en matière plastique ou en aluminium.
  15. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que les pales de roue (54) sont réalisées en matière plastique ou en aluminium.
  16. Ventilateur de conduit selon l'une des revendications précédentes, caractérisé en ce que le dispositif de guidage (42) est fabriqué d'une seule pièce avec le canal d'écoulement allant en s'agrandissant qui lui fait suite (diffuseur 44) et avec la suspension pour l'entraînement motorisé (88).
EP04029400.1A 2003-12-18 2004-12-11 Ventilateur-canal Expired - Lifetime EP1544472B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20319749U DE20319749U1 (de) 2003-12-18 2003-12-18 Rohrventilator
DE20319749U 2003-12-18

Publications (3)

Publication Number Publication Date
EP1544472A2 EP1544472A2 (fr) 2005-06-22
EP1544472A3 EP1544472A3 (fr) 2006-09-13
EP1544472B1 true EP1544472B1 (fr) 2014-01-22

Family

ID=33441949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04029400.1A Expired - Lifetime EP1544472B1 (fr) 2003-12-18 2004-12-11 Ventilateur-canal

Country Status (2)

Country Link
EP (1) EP1544472B1 (fr)
DE (1) DE20319749U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3821132A1 (fr) * 2018-11-16 2021-05-19 ebm-papst Mulfingen GmbH & Co. KG Ventilateur diagonal équipé d'un rotor diagonal optimisé
US11473594B2 (en) 2018-05-18 2022-10-18 Dyson Technology Limited Compressor
EP4375514A1 (fr) 2022-11-25 2024-05-29 ebm-papst Mulfingen GmbH & Co. KG Ventilateur

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015104A1 (de) * 2009-03-31 2010-10-14 Behr Gmbh & Co. Kg Axiallüfter, insbesondere für ein Kraftfahrzeug
DE102010032168A1 (de) 2010-07-23 2012-01-26 Ruck Ventilatoren Gmbh Diagonal-Ventilator
DE102010047489A1 (de) 2010-10-06 2012-04-12 Ruck Ventilatoren Gmbh Wandeinbaugebläse
US20140023491A1 (en) 2012-07-17 2014-01-23 Ruck Ventilatoren Gmbh Diagonal fan
DE102012019419A1 (de) 2012-10-04 2014-04-10 Ruck Ventilatoren Gmbh Diagonal-Ventilator
CN105402165A (zh) * 2014-09-09 2016-03-16 苏州金莱克精密机械有限公司 吹风机
DE102016215738A1 (de) 2016-08-23 2018-03-01 Siemens Aktiengesellschaft Laufrad, Verfahren zur Fertigung
DE102018128792A1 (de) 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Kompakter Diagonalventilator mit Nachleiteinrichtung
DE102018128791A1 (de) * 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit Nachleiteinrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059833A (en) * 1956-10-17 1962-10-23 Remi A Benoit Fans
GB849744A (en) * 1958-01-30 1960-09-28 Blackman Keith Ltd Improvements in fans
US3191364A (en) * 1962-05-28 1965-06-29 American Air Filter Co Centrifugal dust separator
DE4020236A1 (de) * 1990-06-26 1992-01-02 Keller Lufttechnik Gmbh & Co Kg Innerhalb eines luftansaugkanals angeordnete radialventilatoreinheit
CA2412773C (fr) * 2000-06-15 2009-09-15 Greenheck Fan Corporation Ventilateur centrifuge en ligne

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11473594B2 (en) 2018-05-18 2022-10-18 Dyson Technology Limited Compressor
EP3821132A1 (fr) * 2018-11-16 2021-05-19 ebm-papst Mulfingen GmbH & Co. KG Ventilateur diagonal équipé d'un rotor diagonal optimisé
EP4375514A1 (fr) 2022-11-25 2024-05-29 ebm-papst Mulfingen GmbH & Co. KG Ventilateur
DE102022131246A1 (de) 2022-11-25 2024-05-29 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfter

Also Published As

Publication number Publication date
EP1544472A3 (fr) 2006-09-13
EP1544472A2 (fr) 2005-06-22
DE20319749U1 (de) 2004-11-04

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