EP3312427B2 - Ventilateur doté de la roue de ventilateur et des ailettes de diffusion - Google Patents

Ventilateur doté de la roue de ventilateur et des ailettes de diffusion

Info

Publication number
EP3312427B2
EP3312427B2 EP17189145.0A EP17189145A EP3312427B2 EP 3312427 B2 EP3312427 B2 EP 3312427B2 EP 17189145 A EP17189145 A EP 17189145A EP 3312427 B2 EP3312427 B2 EP 3312427B2
Authority
EP
European Patent Office
Prior art keywords
fan
wheel
guide wheel
flow
guide
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.)
Active
Application number
EP17189145.0A
Other languages
German (de)
English (en)
Other versions
EP3312427B1 (fr
EP3312427A1 (fr
Inventor
Daniel Gebert
Thomas Heli
Eugen Kleinhanß
Ann-Kathrin Löber
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.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=59251473&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3312427(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP3312427A1 publication Critical patent/EP3312427A1/fr
Publication of EP3312427B1 publication Critical patent/EP3312427B1/fr
Application granted granted Critical
Publication of EP3312427B2 publication Critical patent/EP3312427B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • F04D29/40—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
    • F04D29/544—Blade shapes
    • 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
    • F04D29/545—Ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • 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
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence

Definitions

  • the smaller diameter of the diffuser compared to the fan impeller makes it possible to reduce the distance between the fan impeller and the diffuser, i.e., to position the diffuser closer to the fan impeller in the direction of flow. This not only reduces the size of the fan in the axial flow direction, but also improves its noise performance. The generally known effect of equalizing the flow and preventing backflow is retained. Furthermore, due to its small installation space requirement, the diffuser can be retrofitted to existing fans.
  • Another advantageous aspect of the diffuser wheel which is smaller in diameter than the fan wheel, is that the pressure difference across the smaller cross-section of the diffuser wheel is lower, so that the risk of icing is reduced when used in refrigeration technology.
  • the fan wheel has a fan wheel hub and a flow-through blade section that adjoins the fan wheel hub in the radial direction up to the outer circumference of the fan wheel.
  • the stator wheel also comprises a stator hub and a guide section that adjoins the stator hub in the radial direction up to the outer circumference of the stator wheel. It is advantageous if the diameter ratio of the guide section to the blade section is in a range from 0.1 to 0.8, more preferably in a range from 0.2 to 0.5.
  • a separate component does not have to be provided as the stator hub; rather, the stator hub can also be formed by elements of other components, for example a motor housing.
  • the minimum distance in the axial flow direction between the fan wheel and the guide wheel is in a range of 0.01 and 0.2, more preferably in a range of 0.01 and 0.05 of the fan wheel diameter.
  • the stator has an outer peripheral ring on its radial outer circumference.
  • the outer peripheral ring is preferably thin-walled and has a radial thickness corresponding to 0.002 to 0.015 of the fan wheel diameter.
  • the outer peripheral ring is designed to completely surround the stator and has a non-angular cross-section in axial section. In addition to its aerodynamic influence, the outer peripheral ring also promotes an increase in the stiffness of the stator.
  • the outer circumferential ring extends radially outwards in the axial flow direction at an angle ⁇ of 5 - 25°, more preferably 5 - 10°, relative to the axis of rotation.
  • a further design variant of the fan is characterized in that the guide wheel hub is set at an angle ⁇ of up to 60° relative to the rotation axis and extends radially outwards in the axial flow direction, i.e. the guide wheel hub is conical in the flow direction.
  • stator As an alternative to the stator hub, an alternative solution can be provided for the stator to have an inner ring radially adjacent to the stator hub, which extends radially outward in the axial flow direction, preferably across the entire width of the stator, at an angle ⁇ of up to 60° to the rotational axis.
  • the adjustment of the stator hub or the inner ring adjacent to the stator hub directs the air flow generated by the fan impeller in the radial inner region in a radially outward direction, away from the rotational axis of the fan.
  • stator hub or the inner ring forms a nozzle with the outer circumferential ring, with a flow cross-section that decreases in the direction of flow.
  • Figure 1 is shown in axial section through the upper half of an (axial) fan 1 with a fan wheel 2 extending radially outwards around the rotation axis RA of the fan 1 and a guide wheel 4 arranged at a very small distance A from the fan wheel 2 in the axial flow direction, wherein the distance A corresponds to a value of 0.02 of the fan wheel diameter Dv.
  • the lower half of the fan 1, not shown, is mirror-symmetrical.
  • the fan wheel 2 has a plurality of fan blades 3 arranged at a distance from one another in the circumferential direction, each of which extends radially outwards from the fan wheel hub 12 and thereby increases its axial width.
  • alternative shapes of the fan blades known from the art can also be used.
  • the radially outer free end of the fan wheel blades 3 determines the outer circumference and thus the fan wheel diameter Dv.
  • a housing part 30 forming a flow channel is indicated, into which the fan 1 is inserted with a gap 31 between the fan blades 3 and the inner wall of the housing part 30.
  • the housing part 30 can be an external component or integrated into the fan.
  • the guide wheel 4 comprises a plurality of air guide webs 5 running axially through the guide wheel and extending radially outwards from the guide wheel hub 13 to the outer peripheral ring 11.
  • the maximum guide wheel diameter DI is smaller than the fan wheel diameter Dv. Since the guide wheel 4 and the fan wheel 2 are arranged overlapping in the direction of flow, the guide wheel 4 determines a partial cross-sectional area of the fan wheel cross-sectional area through which air can flow.
  • the cross-sectional areas through which air can flow are formed by the blade section 8 extending radially outwards from the fan wheel hub 12 and the guide section 9 extending radially outwards from the guide wheel hub 13, the diameter ratio of the guide section 9 to the blade section 8 being 0.4 in the embodiment shown.
  • the radially outer part of the blade section 8 is not covered by the guide wheel 4, so that the flow generated by the fan wheel 2 partly passes first through the guide wheel 4 and partly directly to the axial outside.
  • the outer peripheral ring 11 runs parallel to the rotation axis RA essentially over the entire width B of the stator 4 and is designed as a thin-walled circumferential ring whose thickness corresponds to a value of 0.01 of the fan wheel diameter Dv.
  • the width B of the stator 4 corresponds to a value of 0.065 of the fan wheel diameter Dv.
  • the fan wheel hub 12 and the stator hub 13 have the same hub diameter Dn.
  • the idler 4 of the design according to Figure 3 additionally comprises an inner ring 7, which has a section angled ⁇ of 40° relative to the rotational axis RA and extends obliquely radially outward in the axial flow direction across the entire width B of the stator 4.
  • the inner ring 7 has a V-shaped cross-section with one leg engaging the stator hub 13 and one leg forming the angled section. The inner ring 7 effectively prevents axial backflow of air toward the fan wheel 2 in the radially inner area adjacent to the hubs 12, 13.
  • the execution according to Fig. 3 is identical to that in Figure 2 except that the outer peripheral ring 11 is modified. To avoid repetition, reference is therefore made to the disclosure of the Figures 1 and 2 Reference is made.
  • the diffuser 4 thus forms a nozzle with a flow cross-section that decreases in the flow direction through the inner ring 7 and the outer peripheral ring 11. Due to the inclined position of the outer peripheral ring 11, the maximum diffuser cross-section increases by the length of the opposite side of the angle ⁇ .
  • Figure 4 is a diagram with characteristic curves for the pressure curve psf [Pa] and the efficiency nse [%] at different volume flows qv [m 3 /h] of the fan 1 according to Fig. 1 and the same fan without guide wheel 4, where the solid characteristic curves represent the fan 1 according to Figure 1 and the dashed characteristic curves indicate the fan without a diffuser.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (11)

  1. Ventilateur comprenant une roue de ventilateur (2) comportant des pales de ventilateur (3), qui s'étend radialement vers l'extérieur autour d'un axe de rotation du ventilateur (1) et dont la circonférence extérieure radiale détermine un diamètre de roue de ventilateur (Dv), et une roue de guidage (4) disposée à une distance (A) dans le sens axial du flux par rapport à la roue de ventilateur (1) et comportant des ailettes de guidage d'air (5) qui s'étend radialement vers l'extérieur et présente un diamètre de roue de guidage (DI) inférieur au diamètre de roue de ventilateur (Dv), de sorte que la roue de guidage (4) détermine une section transversale partielle d'une section transversale de roue de ventilateur, la roue de guidage (4) présentant, dans le sens axial du flux, une largeur (B) comprise entre 0,02 et 0,1 du diamètre de roue de ventilateur (Dv), la roue de guidage (4) présente sur sa périphérie extérieure radiale une bague périphérique extérieure (11), la bague périphérique extérieure (11) étant formée de manière à entourer complètement la roue de guidage (4) et présentant une section transversale non rectangulaire en coupe axiale.
  2. Ventilateur selon la revendication 1, caractérisé en ce que la roue de ventilateur (2) comporte un moyeu de roue de ventilateur (12) et une partie de pales (8) qui se raccorde dans le sens radial au moyeu de roue de ventilateur (12) jusqu'à la périphérie extérieure de la roue de ventilateur (2), et la roue de guidage (4) comprend un moyeu de roue de guidage (13) et une partie de guidage (9) qui se raccorde dans le sens radial au moyeu de roue de guidage (13) jusqu'à la périphérie extérieure de la roue de guidage (4), le rapport entre le diamètre de la partie de guidage (9) et celui de la partie de pales (8) étant compris entre 0,1 et 0,8.
  3. Ventilateur selon la revendication 2, caractérisé en ce que le rapport des diamètres de la partie de guidage (9) et de la partie de pales (8) est compris entre 0,2 et 0,5.
  4. Ventilateur selon l'une quelconque des revendications précédentes, caractérisé en ce que la distance (A) dans le sens axial du flux entre la roue de ventilateur (2) et la roue de guidage (4) est comprise entre 0,01 et 0,2, de préférence entre 0,01 et 0,05, du diamètre (Dv) de la roue de ventilateur.
  5. Ventilateur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague périphérique extérieure (11) présente une épaisseur radiale correspondant à 0,002 à 0,015 du diamètre (Dv) de la roue de ventilateur.
  6. Ventilateur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague périphérique extérieure (11) s'étend radialement vers l'extérieur dans le sens axial du flux selon un angle β de 5 à 25° par rapport à l'axe de rotation.
  7. Ventilateur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague périphérique extérieure (11) s'étend radialement vers l'extérieur dans le sens axial du flux, selon un angle β de 5 à 10° par rapport à l'axe de rotation.
  8. Ventilateur selon l'une quelconque des revendications 2 à 7, caractérisé en ce que le moyeu de la roue de guidage (13) s'étend radialement vers l'extérieur dans le sens axial du flux, selon un angle α pouvant atteindre 60° par rapport à l'axe de rotation.
  9. Ventilateur selon l'une quelconque des revendications 2 à 7, caractérisé en ce que la roue de guidage (4) comporte une bague intérieure (7) adjacente au moyeu de la roue de guidage (13) dans le sens radial, laquelle bague intérieure est inclinée selon un angle α de 0 à 60° par rapport à l'axe de rotation et s'étend radialement vers l'extérieur dans le sens axial du flux sur toute la largeur (B) de la roue de guidage (4).
  10. Ventilateur selon l'une quelconque des revendications 6 à 9, caractérisé en ce que l'angle α est supérieur à l'angle β.
  11. Ventilateur selon l'une quelconque des revendications 2 à 10, caractérisé en ce que le moyeu de roue de guidage (13) forme avec la bague périphérique extérieure (11) une tuyère dont la section du flux diminue dans le sens du flux.
EP17189145.0A 2016-10-19 2017-09-04 Ventilateur doté de la roue de ventilateur et des ailettes de diffusion Active EP3312427B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016119916.8A DE102016119916A1 (de) 2016-10-19 2016-10-19 Ventilator mit Ventilatorrad und Leitrad

Publications (3)

Publication Number Publication Date
EP3312427A1 EP3312427A1 (fr) 2018-04-25
EP3312427B1 EP3312427B1 (fr) 2022-08-17
EP3312427B2 true EP3312427B2 (fr) 2025-10-01

Family

ID=59251473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17189145.0A Active EP3312427B2 (fr) 2016-10-19 2017-09-04 Ventilateur doté de la roue de ventilateur et des ailettes de diffusion

Country Status (4)

Country Link
US (1) US10428829B2 (fr)
EP (1) EP3312427B2 (fr)
CN (1) CN206309653U (fr)
DE (1) DE102016119916A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015205424A1 (de) * 2015-03-25 2016-09-29 Ebm-Papst Mulfingen Gmbh & Co. Kg Nachleitrad
WO2017192647A1 (fr) 2016-05-03 2017-11-09 Carrier Corporation Entrée pour ventilateur axial
DE102018211808A1 (de) * 2018-07-16 2020-01-16 Ziehl-Abegg Se Ventilator und Leiteinrichtung für einen Ventilator

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CH219997A (de) 1941-02-17 1942-03-15 Ventilator A G Ventilator.
GB766216A (en) 1954-03-05 1957-01-16 Stork Koninklijke Maschf Improvements in and relating to pumps or fans provided with an axial flow impeller
US3536414A (en) 1968-03-06 1970-10-27 Gen Electric Vanes for turning fluid flow in an annular duct
DK345883D0 (da) * 1983-07-28 1983-07-28 Nordisk Ventilator Aksialventilator
DE4404262A1 (de) 1994-02-10 1995-08-17 Guentner Gmbh Hans Schutzgittervorrichtung für Ventilatoren, insbesondere von Luftkühlern
US6514052B2 (en) * 2001-03-30 2003-02-04 Emerson Electric Co. Two sided radial fan for motor cooling
US6599088B2 (en) * 2001-09-27 2003-07-29 Borgwarner, Inc. Dynamically sealing ring fan shroud assembly
DE10330088A1 (de) * 2003-07-03 2005-02-03 Asia Vital Components Co., Ltd. Luftumlenkung bzw. Führung zur Beeinflussung der Windrichtung einer Wärmeabführung
US20050186070A1 (en) 2004-02-23 2005-08-25 Ling-Zhong Zeng Fan assembly and method
US7381129B2 (en) 2004-03-15 2008-06-03 Airius, Llc. Columnar air moving devices, systems and methods
US20060067816A1 (en) * 2004-09-24 2006-03-30 Bor-Haw Chang Cooling fan with fluid control device
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DE102005046180B3 (de) 2005-09-27 2007-03-22 Siemens Ag Lüftermodul
US7478993B2 (en) 2006-03-27 2009-01-20 Valeo, Inc. Cooling fan using Coanda effect to reduce recirculation
JP5199849B2 (ja) * 2008-12-05 2013-05-15 三菱重工業株式会社 車両用熱交換モジュールおよびこれを備えた車両
US9291177B2 (en) * 2010-06-01 2016-03-22 Esg Mbh Duct having flow conducting surfaces
DE202011004708U1 (de) 2010-08-12 2011-07-14 Ziehl-Abegg Ag Ventilator
ES2598229T3 (es) 2011-06-29 2017-01-26 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilador axial con cuerpo de orientación de flujo
CN103696987B (zh) 2012-09-27 2016-05-11 台达电子工业股份有限公司 风扇及其增压扇叶组
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Also Published As

Publication number Publication date
EP3312427B1 (fr) 2022-08-17
US20180106267A1 (en) 2018-04-19
CN206309653U (zh) 2017-07-07
DE102016119916A1 (de) 2018-04-19
US10428829B2 (en) 2019-10-01
EP3312427A1 (fr) 2018-04-25

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