EP4051907A1 - Ventilateur et pale et hélice pour ventilateur - Google Patents

Ventilateur et pale et hélice pour ventilateur

Info

Publication number
EP4051907A1
EP4051907A1 EP21731918.5A EP21731918A EP4051907A1 EP 4051907 A1 EP4051907 A1 EP 4051907A1 EP 21731918 A EP21731918 A EP 21731918A EP 4051907 A1 EP4051907 A1 EP 4051907A1
Authority
EP
European Patent Office
Prior art keywords
rotor
wing
fan
blade
hub
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.)
Pending
Application number
EP21731918.5A
Other languages
German (de)
English (en)
Inventor
Sven LOENNE
Thomas Bitz
Timo HAERPFER
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.)
Ziehl Abegg SE
Original Assignee
Ziehl Abegg SE
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 Ziehl Abegg SE filed Critical Ziehl Abegg SE
Publication of EP4051907A1 publication Critical patent/EP4051907A1/fr
Pending legal-status Critical Current

Links

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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade

Definitions

  • the invention relates to a fan, in particular an axial fan, with an electric motor comprising a rotor and blades connected to the rotor, the blades extending axially on the rotor side at least over a cylindrical area of the rotor or its hub.
  • the invention also relates to a blade for a fan, individual blades being connected to the rotor or the hub of the fan.
  • the invention also relates to an impeller for a fan, the impeller comprising a plurality of blades.
  • the invention is therefore based on the object of eliminating, or at least reducing, the acoustic disadvantages caused by the blade geometry in fans of the generic type. Measures in this regard should be neutral with regard to the degree of efficiency or at least improve it slightly.
  • Such a fan is preferably an axial fan in which the blades on the rotor side are in in the axial direction at least over a cylindrical region of the rotor or its hub, regularly in an oblique or angular alignment to the longitudinal axis.
  • a fan is preferably an axial fan in which the blades on the rotor side are in in the axial direction at least over a cylindrical region of the rotor or its hub, regularly in an oblique or angular alignment to the longitudinal axis.
  • the configuration of a bevel (winglet) facing the rotor or the hub is advantageous , wherein the fold relates to the area of the overhang of the wing.
  • the acoustic performance can be improved by implementing the winglet on the hub side at the relevant point. Tests have shown that the radiated sound power level of the fan can be reduced by up to 2 dB (A).
  • the transition between the wing and the fold has a radius.
  • the fold or the winglet extends in the inflow area of the wing up to the wing connection to the hub.
  • the fold can extend on the suction side and / or on the pressure side of the wing, preferably on the leading edge and / or on the trailing edge of the wing.
  • the bevel can at least partially encompass or encircle the inflow-side and / or outflow-side area of the blade facing the hub, so that the edge of the blade facing the inflow side, close to the rotor, is entirely different from the Winglet is surrounded. To this extent, too, a reduction in the radiated sound power is achieved.
  • the fold for connecting the wing is reduced down to the wing surface. This measure favors the avoidance of additional detachments and harmonizes the flow.
  • the fold is free of sharp edges or corners.
  • the fold in the free edge area can be rounded, i.e. have a radius that promotes the flow.
  • the fold and thus the winglet are an integral part of the wing.
  • the fold is positively and / or non-positively and / or materially connected to the wing. Any joining techniques can be used to connect the winglet to the wing. It is also conceivable to manufacture the winglet from the same material as the wing or from a different material, depending on the specific needs. Any dimensioning of the winglets, also depending on specific needs, is conceivable.
  • a wing for a fan is claimed bean, with individual wings ver with the rotor or the hub of a fan are bindable.
  • the wing is equipped with a bevel in the sense of a winglet in accordance with the above statements on the fan.
  • an impeller for a fan which has several blades with corresponding bevels in the sense of a winglet.
  • the winglet has a particularly favorable effect on the acoustics when the blades on the rotor side extend in the axial direction beyond the area of the rotor or its hub with a protrusion.
  • FIG. 1 shows a schematic side view of an axial fan in which the individual blades extend over a cylindrical area of the rotor
  • FIG. 2 shows a schematic side view of an axial fan in which the individual blades extend beyond a cylindrical area of the rotor with an overhang towards the inflow side
  • Fig. 3 in a schematic view, obliquely from the front, the fan
  • FIG. 4 shows a schematic view of a standard wing according to the prior art seen from the pressure side
  • FIG. 5 shows a schematic view of the wing from FIG. 4 from FIG.
  • FIG. 6 shows a schematic view of the wing from FIG. 4 from FIG.
  • FIG. 7 shows a schematic view of a wing according to the invention with a winglet on the hub side on the leading edge, seen from the pressure side,
  • FIG. 8 is a schematic view of the wing from FIG. 7, of which
  • FIG. 9 shows, in a schematic view, the wing from FIG. 7, of which
  • FIG. 10 is a schematic view of the wing from FIG. 7, seen from the hub side,
  • FIG. 11 shows a schematic view of a further exemplary embodiment of a wing according to the invention with a winglet both on the leading edge and on the trailing edge, seen from the pressure side,
  • Fig. 12 is a schematic view of the wing from Fig. 11, seen from the suction side,
  • FIG. 13 is a schematic view of the wing from FIG. 11, seen from the wing tip (pressure side),
  • FIG. 14 is a schematic view of the wing from FIG. 11, seen from the wing tip (suction side),
  • FIG. 15 shows a schematic view of the wing from FIG. 11, seen from the hub side (suction side),
  • FIG. 16 shows a schematic view of a further exemplary embodiment of a wing according to the invention with a winglet that is continuous on the hub side, seen from the pressure side
  • FIG. 17 shows a schematic view of the wing from FIG. 16, seen from the suction side
  • FIG. 18 is a schematic view of the wing from FIG. 16, seen from the wing tip (pressure side),
  • FIG. 19 shows a schematic view of the wing from FIG. 16, seen from the wing tip (suction side), and FIG. 20 shows a schematic view of the wing from FIG. 16, seen from the hub side (suction side).
  • FIG. 1 shows a schematic side view of an axial fan according to the invention which has an electric motor 1 with a rotor 2 which is driven in rotation.
  • the rotor 2 or its hub carries several blades 3, with a total of five blades 3 being provided in the exemplary embodiments shown here (see FIG. 3).
  • the rotor 2 is equipped with flaps 4 protruding from the rotor 2, to which the wings 3 can be fastened. It is conceivable that the blades 3 can be attached to the rotor 2 in different angular positions.
  • each wing 3 extends obliquely or diagonally over a cylindrical region 5 of the rotor 2.
  • the wing 3 ends at the end of the cylindrical area of the rotor 2.
  • There a bevel 6 is formed in the sense of a winglet, the bevel 6 extending in the inflow area of the wing 3 up to the wing connection to the rotor 2 or the hub , and wherein the wing connection is defined by the fold 4.
  • the fold 6 or the winglet is formed both on the suction side 7 and on the pressure side 8 of the wing 3.
  • the fold 6 extends over the leading edge 9.
  • the fold 6 is an integral part of the wing 3.
  • FIG. 2 shows, in a view identical to FIG. 1, a further embodiment example of an axial fan according to the invention, the blade 3 extending there not only over the cylindrical area 5 of the rotor 2 or its hub, but also with a protrusion 11.
  • This overhang 11 leads to disadvantageous acoustics, as tests have shown. This disadvantage can at least largely be eliminated by providing a bevel 6 or a winglet, as sound level measurements have shown.
  • the fold 6 is formed, similar to the embodiment shown in FIG. 1.
  • FIG. 3 shows the embodiment from FIG. 2, with the upstream overhang 11, obliquely from the front. 3 clearly shows that the protrusion 11 of each wing 3 is equipped on the rotor side or close to the rotor with the bevel 6, which forms a type of winglet.
  • FIGS. 4, 5 and 6 show a standard blade according to the prior art, namely as seen in FIG. 4 from the pressure side 8, as seen in FIG. 5 from the suction side 7 and as seen in FIG. 6 from the hub side 13.
  • FIGS. 7 to 20 discussed below show exemplary embodiments, according to which the winglet 6 close to the rotor or on the hub side can be designed in different variants. It is basically conceivable that the winglet 6 is formed on the inflow side 9 and / or the outflow side 10 or else continuously from the inflow side 9 to the outflow side 10.
  • Each of the variants can in turn be designed in three ways, namely with a suction-side winglet 6, with a pressure-side winglet 6 or with a winglet 6 on both sides.
  • FIGS. 7 to 10 show in detail a first exemplary embodiment of a wing 3 according to the invention, in which the bevel 6 or the winglet is formed on the inflow side 9 or the inflow edge.
  • FIG. 7 shows a view from the pressure side 8 of the wing 3.
  • FIG. 8 shows the wing 3 from FIG. 7 in a view from the suction side 7 of the wing 3.
  • FIG. 9 shows the wing 3 from FIG. 7 seen from the wing tip 12.
  • FIG. 10 shows the wing 3 from FIG. 7 seen from the hub side 13.
  • FIGS. 11 to 15 show a further exemplary embodiment of a wing 3 according to the invention, with bevels 6 or winglets being provided both on the inflow edge or inflow side 9 and on the outflow edge or outflow side 10.
  • the bevels 6 are thus formed on both sides in relation to the inflow and outflow edge are thus formed on both sides.
  • FIG. 11 shows the wing 3 with bevels 6 on both sides from the pressure side 8
  • the wing 3 is shown in FIG. 12 from the suction side 7.
  • Figure 13 shows the wing 3 in a view from the wing tip 12, in a print-side view.
  • FIG. 14 shows the wing 3 in a view from the wing tip 14.
  • the wing 3 is shown from the hub side 13 on the suction side.
  • FIGS. 16 to 20 show a further exemplary embodiment of a wing 3 according to the invention, the bevel 6 or the winglet being formed continuously on both sides of the wing 3.
  • FIG. 16 shows the wing 3 seen from the pressure side 8
  • FIG. 17 shows the wing 3 from the suction side 7.
  • the wing 3 is shown from the wing tip 12 on the pressure side.
  • the wing is shown from the wing tip 12 on the suction side.
  • FIG. 20 shows a view of the wing 3 from the hub side 13, on the suction side.

Landscapes

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

Abstract

La présente invention concerne un ventilateur et plus particulièrement un ventilateur axial comprenant : - un moteur électrique (1) comprenant un rotor (2); et - des pales (3) qui sont reliées au rotor (2); les pales (3) s'étendant, côté rotor, au moins sur une zone cylindrique (5) du rotor (2) ou sur son moyeu dans la direction axiale, l'extrémité du bord d'attaque de la pale (3) à proximité du rotor et/ou l'extrémité du bord de fuite (10) de la pale (3) à proximité du rotor ayant, dans une région située directement au niveau du rotor (2) ou à proximité du rotor (2), un coude (6) dans le sens d'une ailette. La présente invention concerne également une hélice pour un ventilateur ainsi qu'une pale destinée à une hélice de ce type.
EP21731918.5A 2020-06-25 2021-05-12 Ventilateur et pale et hélice pour ventilateur Pending EP4051907A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020207914.5A DE102020207914A1 (de) 2020-06-25 2020-06-25 Ventilator sowie Flügel und Flügelrad für einen Ventilator
PCT/DE2021/200067 WO2021259429A1 (fr) 2020-06-25 2021-05-12 Ventilateur et pale et hélice pour ventilateur

Publications (1)

Publication Number Publication Date
EP4051907A1 true EP4051907A1 (fr) 2022-09-07

Family

ID=76421897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21731918.5A Pending EP4051907A1 (fr) 2020-06-25 2021-05-12 Ventilateur et pale et hélice pour ventilateur

Country Status (3)

Country Link
EP (1) EP4051907A1 (fr)
DE (1) DE102020207914A1 (fr)
WO (1) WO2021259429A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12473926B1 (en) 2024-08-14 2025-11-18 Morrison Products, Inc. Impellers and manufacturing methods thereof
CN120592908B (zh) * 2025-08-11 2025-10-21 珠海格力电器股份有限公司 一种风叶结构及风扇

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10036392B2 (en) * 2013-05-14 2018-07-31 Cofimco S.R.L. Axial fan for industrial use

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912197A (ja) * 1982-07-12 1984-01-21 Mitsubishi Heavy Ind Ltd 送風機の翼等の共振回避方法
EP0114023A3 (fr) * 1982-11-18 1985-05-15 Fischbach GmbH & Co.KG Montage des pales d'un ventilateur axial entraíné par un moteur de type plat
DE10100064A1 (de) * 1999-06-30 2002-07-04 Behr Gmbh & Co Lüfter mit Axialschaufeln
DE50110684D1 (de) 2001-01-02 2006-09-21 Behr Gmbh & Co Kg Lüfter mit Axialschlaufen
CN203685682U (zh) * 2013-11-01 2014-07-02 广东泛仕达机电有限公司 一种新型的轴流风轮
CN203516198U (zh) * 2013-11-20 2014-04-02 梁国雄 一种新型风扇的风叶
JP6405529B2 (ja) * 2014-03-25 2018-10-17 パナソニックＩｐマネジメント株式会社 送風装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10036392B2 (en) * 2013-05-14 2018-07-31 Cofimco S.R.L. Axial fan for industrial use

Also Published As

Publication number Publication date
DE102020207914A1 (de) 2021-12-30
WO2021259429A1 (fr) 2021-12-30

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