EP0499166A1 - Axiallüftereinheit - Google Patents

Axiallüftereinheit Download PDF

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Publication number
EP0499166A1
EP0499166A1 EP92102145A EP92102145A EP0499166A1 EP 0499166 A1 EP0499166 A1 EP 0499166A1 EP 92102145 A EP92102145 A EP 92102145A EP 92102145 A EP92102145 A EP 92102145A EP 0499166 A1 EP0499166 A1 EP 0499166A1
Authority
EP
European Patent Office
Prior art keywords
wheel
unit according
fan unit
fan wheel
axial fan
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.)
Ceased
Application number
EP92102145A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hannes Wolf
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.)
Aurora Konrad G Schulz GmbH and Co KG
Original Assignee
Aurora Konrad G Schulz GmbH and Co KG
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 Aurora Konrad G Schulz GmbH and Co KG filed Critical Aurora Konrad G Schulz GmbH and Co KG
Publication of EP0499166A1 publication Critical patent/EP0499166A1/de
Ceased 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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • 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

Definitions

  • the invention relates to an axial fan unit according to the preamble of claim 1.
  • the efficiency is increased in comparison with a stator-wheel-free design, an increase in efficiency by 20%, for example, being possible.
  • an object of the invention to provide an axial fan unit according to the preamble of claim 1, which has such a high air performance and such a low noise level that it is universally suitable both for free blowing out and for blowing out on an impact surface.
  • the comparatively narrow housing ring according to the invention which is suitable for receiving a flange on the downstream end face, but also on the upstream end face, is also particularly favorable.
  • the axial fan unit according to the invention can easily be used, for example, in the rear area of a bus to apply air to the oil cooler, condenser or the like, where the partition can serve as a baffle due to the limited space available, but also for ventilation of the interior when the inventive invention is installed Fan unit on the roof of the bus.
  • the developing pressure is surprisingly high.
  • the beam is expanded and noise is reduced, so that the desired low flow velocities are present in the area of the passengers.
  • each vane of the stator extends in the axial direction beyond an annular region of the housing ring, which is characterized by an internal diameter that is constant in the axial direction.
  • the housing ring ends in front of the stator end region, that is to say the end region of the stator wheel facing away from the fan wheel, and according to a further embodiment, a housing ring end region is provided which is greatly expanded compared to the region of constant inner diameter. In the latter embodiment, it is advantageous if the vanes of the stator in the stator end region extend into the radial expansion.
  • the vanes of the stator end clearly in front of the inner diameter of the housing flange, so that a Gap of, for example, 1/50 of the fan wheel diameter results.
  • the tips of each wing of the fan wheel which face the air flow, protrude clearly from the upstream end face of the housing ring, so that a considerable part of the wing of the fan wheel lies outside the ring area spanned by the housing ring.
  • the vanes of the stator are set much steeper than the vanes of the fan wheel. Furthermore, it is favorable if the curvature of the stator wheel also decreases from the inside to the outside and at the same time the angle of attack or the slope increases in the same radial direction.
  • the housing ring which essentially surrounds the fan wheel, can be kept at a short overall height, so that, on the one hand, the required use of material is limited without the strength of the axial fan unit suffering.
  • the narrow housing ring favors the universal usability of the axial fan unit according to the invention, since an on-roof installation is also possible, so that the axial fan unit according to the invention protrudes only slightly into the passenger compartment. In this case, the space under the hood required for the rain cover is advantageously used. It goes without saying that an application as a ventilator is also possible when installing the roof.
  • cover and protective grilles can be attached to the desired side of the fan unit according to the invention. Is particularly cheap a kind of dome shape for a sealing grid made of wire, so that compared to a flat spanned grid there is increased stability and security, but still can be easily attached to the relevant end face of the housing ring.
  • the dome shape offers the advantage of increased security against tampering and indentation with good air permeability.
  • the axial fan unit according to the invention is used for ventilation in the rear area of the bus, the axial protrusion of the fan wheel blades relative to the upstream end face of the housing ring can be exploited particularly favorably, since to a certain extent this also results in a radial flow against the fan wheel. Intervention from the outside is made even more difficult by the fact that the stator is arranged between the fan wheel and the grille, the depth of which is considerably greater than the depth of the fan wheel.
  • the axial fan unit 10 shown in FIG. 1 has a guide wheel 12 and a fan wheel 14, which are surrounded by a housing ring 16.
  • the housing ring 16 carries a stator core 20, in which an electric motor 22 is supported, via a plurality of vanes 18 of the stator.
  • the electric motor 22 serves as a blower motor and has a shaft 24, on which the fan wheel 14 is attached in a rotationally secure and captive manner.
  • the fan wheel 14 has a fan wheel core 26 and a plurality of blades 28, which are inclined in a manner known per se, so that they are suitable for conveying air.
  • the housing ring 16 spans an annular area 30, in each of which a part of the blades 28 of the fan wheel 14 and the blades 18 of the stator 12 are located.
  • the vanes 18 of the stator 12 extend considerably beyond the ring area, so that more than half of the wing area lies outside the ring area 30.
  • the blades 28 of the fan wheel 14 also extend in the other direction beyond the ring region 30.
  • the air flow 32 is provided in the direction of the arrow, that is to say from right to left, so that an end face 34 of the housing ring 16 facing the air flow points to the right.
  • the housing ring 16 has in the area the end face 34 on a mounting flange 36 with which the axial fan unit according to the invention can be attached in a wall, for example of a bus.
  • the dimensions are chosen so that the outer front ends 38 of the wings 28 still project beyond the wall (not shown).
  • each axis 40 of a wing 28 points slightly upstream from the wing root, so that - although the center of gravity of the wing 28 is clearly within the ring area - each end 38 of a wing the air in the immediate vicinity can take away.
  • a gap 44 is provided between the radially outer end 38 of the wing 28 and an inner ring surface 42 of the housing ring 16, which gap can be 5 mm wide, for example, with a diameter of 300 mm.
  • Another, significantly larger gap 45 is provided between the vanes 28 of the fan wheel 14 and the vanes 18 of the stator 12. In the described embodiment, this gap 45 is approximately 15 mm.
  • the wings 28 are - especially in comparison with the wings 18 - large in the radial area and kept with a slight slope, which also benefits the low noise.
  • FIG. 2 A modification of the configuration according to FIG. 1 is shown in FIG. 2. 1 is radially open, it is provided in the configuration of the axial fan unit according to the invention according to FIG. 2 that the mounting flange 36 is attached to the stator-side end face of the housing ring 16.
  • an end region 46 of the housing ring 16 extends beyond the ring region 30 shown in FIG. 1 and extends there considerably in relation to the diameter of the housing ring 16.
  • the end region 46 has a radius 48 which leads from the ring surface 42 to an end face 50 on the stator side.
  • a fastening flange 52 is also provided, which corresponds to the fastening flange 36 from FIG. 1.
  • FIG. 3 shows a further modification of the embodiment shown in FIG. 1, in which the stator-side region, that is to say the outlet region, of the axial fan 10 according to the invention is covered with a cover grille 54.
  • the axial fan unit is provided as a vent for the rear area of a bus, wherein a space 56 between a rear wall 58 and a partition wall 60 is to be vented. Since the space available there is generally quite small, the partial radial flow against the fan unit 10 according to the invention is advantageously noticeable.
  • cover grid 54 which - as can also be seen from FIG. 4 - is constructed in the manner of a spider web, but forms a vault, so that there is particularly good security against being pressed in.
  • cover grid 54 completely covers the exposed end regions of the wings 18, so that there is also security against engagement from the side.
  • the engagement is secured at a considerable distance from the rotating vanes 28 of the fan wheel, and finally the vanes 18 of the stator 12 also prevent interference.
  • the cover grid 54 with struts 62 and the evenly spaced ring wires 64 welded thereon can be seen in the left part.
  • An end plate 66 is provided in the center, which at the same time provides fastening means for the support 5 and can also be welded to these struts 62.
  • any other suitable type of grille is contemplated; for example a spiral wire instead of the ring wires 64 or another type of support on the struts 62.
  • FIG. 4 shows the view of the axial fan unit according to the invention, viewed from the stator side, with the cover grille removed. It can be seen that the vanes 18 of the stator appear considerably narrower in plan view than the vanes 28 of the fan wheel, eight vanes 18 of the stator 12 and five vanes 28 of the fan wheel 14 being provided in the exemplary embodiment shown. As can be seen from the comparison of FIGS. 1 and 4, the pitch of the blades 28 of the fan wheel is considerably less than the pitch of the blades 18 of the stator.
  • the fastening flange 36 has a plurality of fastening recesses 68 distributed uniformly around the circumference and is additionally stabilized with radially extending support ribs 70.
  • FIG. 5 Another embodiment of the axial fan unit 10 according to the invention can be seen in FIG. 5.
  • the axial fan unit 10 is provided for installation in the roof of a bus, in the exemplary embodiment shown as an aerator unit for the interior of the bus.
  • a fastening flange 72 is provided on the stator-wheel-side end of the housing ring 16, the end region 74 of the vanes 28 remaining free in the radial direction.
  • the mounting flange 72 is connected to the roof of the bus and at the same time carries a splash water protection ring 76.
  • the axial fan unit 10 is covered with a hood 78 which prevents the entry of Prevents rain in the interior of the bus.
  • the cover grille 54 is additionally provided on the suction side of the axial fan unit, the cover grille 54 also carrying the hood 78 over the end plate 66. Due to the stable, vault-like design of the cover grille 54, it can be used universally and, in the exemplary embodiment shown, securely supports the hood 78 without appreciably impairing the air access.
  • the unit can also be used without further ado as a vent in the roof of a bus, or as an aerator to apply air to an oil cooler, a condenser or the like in the rear area of a bus.
  • the number of blades of both the guide wheel 12 and the fan wheel 14 can also be changed as desired, the selection of non-prime wing numbers being favorable and an odd number should preferably be selected for the fan wheel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP92102145A 1991-02-14 1992-02-08 Axiallüftereinheit Ceased EP0499166A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9101715U 1991-02-14
DE9101715U DE9101715U1 (de) 1991-02-14 1991-02-14 Axiallüftereinheit

Publications (1)

Publication Number Publication Date
EP0499166A1 true EP0499166A1 (de) 1992-08-19

Family

ID=6864283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102145A Ceased EP0499166A1 (de) 1991-02-14 1992-02-08 Axiallüftereinheit

Country Status (2)

Country Link
EP (1) EP0499166A1 (xx)
DE (1) DE9101715U1 (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324572A (en) * 1996-12-10 1998-10-28 Papst Motoren Gmbh & Co Kg Axial fan housing
GB2344855A (en) * 1998-12-14 2000-06-21 Sunonwealth Electr Mach Ind Co Heat dissipating fan having fan wheel extending beyond lid
EP1152153A1 (fr) * 2000-05-05 2001-11-07 Valeo Thermique Habitacle Ventilateur pour véhicule automobile muni d'aubes directrices
US20100291851A1 (en) * 2007-11-23 2010-11-18 Spal Automotive S.R.L ventilating unit, especially for motor vehicles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240776C1 (de) * 1992-12-04 1994-03-17 Daimler Benz Ag Befestigungsvorrichtung für einen Gebläsemotor
DE102017209291A1 (de) 2017-06-01 2018-12-06 Ziehl-Abegg Se Ventilator und Vorleitgitter für einen Ventilator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557223A (en) * 1948-06-17 1951-06-19 Edmund E Hans Means for supporting a fan in a housing opening
DE1268797B (de) * 1959-04-27 1968-05-22 Electrolux Ab Vorrichtung zur Aufhaengung einer zylindrischen Motorgeblaeseeinheit in einem zylindrischen Gehaeuse
DE3316823A1 (de) * 1983-05-07 1984-11-08 Karl 8630 Coburg Kressel Luefter fuer ein kraftfahrzeug zur entlueftung des fahrzeug-innenraums

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557223A (en) * 1948-06-17 1951-06-19 Edmund E Hans Means for supporting a fan in a housing opening
DE1268797B (de) * 1959-04-27 1968-05-22 Electrolux Ab Vorrichtung zur Aufhaengung einer zylindrischen Motorgeblaeseeinheit in einem zylindrischen Gehaeuse
DE3316823A1 (de) * 1983-05-07 1984-11-08 Karl 8630 Coburg Kressel Luefter fuer ein kraftfahrzeug zur entlueftung des fahrzeug-innenraums

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324572A (en) * 1996-12-10 1998-10-28 Papst Motoren Gmbh & Co Kg Axial fan housing
US6017191A (en) * 1996-12-10 2000-01-25 Papst-Motoren Gmbh & Co. Kg Axial ventilator housing
GB2324572B (en) * 1996-12-10 2000-10-11 Papst Motoren Gmbh & Co Kg Axial fan housing
GB2344855A (en) * 1998-12-14 2000-06-21 Sunonwealth Electr Mach Ind Co Heat dissipating fan having fan wheel extending beyond lid
GB2344855B (en) * 1998-12-14 2002-10-09 Sunonwealth Electr Mach Ind Co Miniature heat dissipating fans with minimized thickness
EP1152153A1 (fr) * 2000-05-05 2001-11-07 Valeo Thermique Habitacle Ventilateur pour véhicule automobile muni d'aubes directrices
FR2808568A1 (fr) * 2000-05-05 2001-11-09 Valeo Thermique Moteur Sa Ventilateur pour vehicule automobile muni d'aubes directrices
US6609887B2 (en) 2000-05-05 2003-08-26 Valeo Thermique Moteur Fan for a motor vehicle, equipped with guide vanes
US20100291851A1 (en) * 2007-11-23 2010-11-18 Spal Automotive S.R.L ventilating unit, especially for motor vehicles
US9994085B2 (en) * 2007-11-23 2018-06-12 Spal Automotive S.R.L Ventilating unit, especially for motor vehicles

Also Published As

Publication number Publication date
DE9101715U1 (de) 1991-05-02

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