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WO2017002039A1 - Ventilateur et groupe de ventilation comprenant le ventilateur - Google Patents

Ventilateur et groupe de ventilation comprenant le ventilateur Download PDF

Info

Publication number
WO2017002039A1
WO2017002039A1 PCT/IB2016/053893 IB2016053893W WO2017002039A1 WO 2017002039 A1 WO2017002039 A1 WO 2017002039A1 IB 2016053893 W IB2016053893 W IB 2016053893W WO 2017002039 A1 WO2017002039 A1 WO 2017002039A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
hub
axis
rotation
wall
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
PCT/IB2016/053893
Other languages
English (en)
Inventor
Pietro De Filippis
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.)
SPAL Automotive SRL
Original Assignee
SPAL Automotive SRL
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 SPAL Automotive SRL filed Critical SPAL Automotive SRL
Priority to US15/739,511 priority Critical patent/US20180187688A1/en
Priority to CN201680037080.5A priority patent/CN107709791B/zh
Priority to KR1020177037620A priority patent/KR102560506B1/ko
Priority to BR112017028106A priority patent/BR112017028106A2/pt
Priority to JP2017568287A priority patent/JP2018519471A/ja
Priority to EP16745173.1A priority patent/EP3314128B1/fr
Publication of WO2017002039A1 publication Critical patent/WO2017002039A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface

Definitions

  • This invention relates to a fan and a ventilation unit comprising a fan and a corresponding shroud.
  • the ventilation groups referred to in this specification are those generally formed by a fan and a support shroud of the fan, for cooling radiators in automotive applications.
  • the fan is usually constituted by an electric motor, preferably of the closed type, for actuating a corresponding fan, of the axial type in the present case.
  • the electric motor has a casing, a cap for closing the casing and an outlet shaft which is solidly constrained to the fan by means of a cup-shaped hub which at least partly houses the motor itself and from which a plurality of blades project.
  • the shroud is provided for supporting the motor by means of a corresponding support ring and for at least partly housing the fan in such a way as to optimise heat removal from the radiator.
  • the shrouds in particular, generally comprise an external tubular member, having a substantially cylindrical end wall, to which the support ring is connected by means of a plurality of arms or spokes which project from the cylindrical wall internally of the tubular element.
  • the support ring is coaxial with the cylindrical wall and the motor is mounted coaxially with the support ring.
  • the positioning and fixing of the fan in the shroud do not enable effective removal and evacuation of the heat generated by the electric motor in operation, i.e. an adequate cooling of the cap and the casing is not enabled.
  • the ring of the shroud for supporting the motor surrounds the motor itself and does not allow the circulation of an air flow suitable carrying of the heat generated in use.
  • the hub of the fan is in general very closed on the motor and also prevents a circulation of air which cools down the casing and the cap of the electric motor by convection.
  • the main aim of this invention is to obviate the above- mentioned drawbacks.
  • the aim of the present invention is to provide a fan which contributes to generating a flow of air for cooling the electric motor, in particular both the cap and the casing.
  • Another aim of the invention is to disclose a ventilation group which allows a better passage of air around the cap and the casing of the electric motor than the prior art solutions.
  • figure 1 is a ventilation group according to the invention, in a schematic perspective view;
  • figure 2 is the ventilation group of figure 1 in a second schematic perspective view
  • FIG. 3 illustrates the ventilation group of the preceding figures in a schematic perspective partly exploded view, with some parts removed for greater clarity;
  • figure 4 is the ventilation group of the present invention in a schematic section view with some parts removed for better clarity.
  • reference numeral 1 denotes a ventilation group according to the present invention.
  • the ventilation group 1 is preferably destined for automotive applications in the sector of radiator cooling.
  • the ventilation group 1 comprises a fan 2 having an axis R of rotation and a support shroud 3 of the fan 2.
  • the fan 2 comprises an electric motor 4 and a fan 5 having axial flow, or simply an axial fan, actuated by the motor 2, rotatable about the axis R of rotation.
  • the motor 4 preferably of the closed and sealed type, substantially of known type and described only regarding the parts necessary for understanding the present invention, comprises an external casing 6, a cap 7 for closing the casing and a shaft 8, coaxial with the axis R, to which the fan 5 is connected.
  • the shaft 8 comprises an end portion 9 protruding from the casing 6 on the opposite side with respect to the cap 7 to which the fan 5 is connected, for example by interference fitting.
  • the shroud 3 comprises a ring 10 for supporting the motor 4, to which the motor 4 is fixed in the substantially known way, for example, by means of screws in suitable protrusions extending from the ring 10.
  • the motor 4 is inserted internally of the fixed ring 10 and is supported thereby.
  • the ring 10 has a external annular wall 11 from which project, on the side opposite the motor, a plurality of arms or spokes 12 of substantially known type.
  • the wall annular 11 advantageously projects axially up to the cap 7 on the opposite side to the fan 5.
  • the wall 11 preferably, has radial dimensions equal to the radial dimensions of the hub 14.
  • the shroud 3 comprises a tubular element 13 external of the ring 10 and to which the arms 12 are connected.
  • the ventilation group 1 is installed in a generic application, which is not illustrated, by means of the element tubular 13 which in turn, by means of the arms 12 and the ring 10, supports the fan 2.
  • the fan 5 comprises a cup-shaped hub 14 and a plurality of blades 15 extending from the hub 14 and preferably made in a single body with the hub by moulding using a plastic material.
  • the motor 4 is housed at least partly internally of the hub 14.
  • the hub 14 comprises an end wall 16 by means of which the fan 5 is connected to the shaft 8.
  • the hub 14 comprises a lateral wall 17 extending from the end wall 16 and having a peripheral edge 18, substantially circular in shape, on the side opposite the end wall 16 along the axis R of rotation.
  • the end wall 16 and the lateral wall 17 define a cup-shaped structure for the hub 14.
  • the blades 15 extend preferably from the lateral wall 17 of the hub 14 towards the outside thereof, externally of the cup-shaped structure.
  • the fan 5 comprises a plurality of fins 19, preferably made in a single body with the hub 14, internal of the cup-shaped structure for generating, in use, a descending flow of tangential air internally of the hub 14 for removing heat from the motor 4.
  • the fins 19 are angularly equi- spaced internally of the hub 14 and are for example seven in number. Each fin 19 comprises a portion 20 projecting beyond the peripheral edge 18 of the lateral wall 17, externally of the cup-shaped structure, i.e. outside the hub 14.
  • each appendage 19 has a first portion 21 extending from lateral wall 17 internally of the hub 14, preferably radially.
  • the first portion 21 has main extension direction that is parallel to the axis R of rotation of the fan 5 and preferably extends along the entire axial dimension of the hub 14 towards the inside of the hub 14.
  • the end portions 20 are preferably defined by an at least partial extension of the first portion 21 beyond the edge 18.
  • each fin 19 comprises a second portion 22 extending from the end wall 16 towards the inside of the hub 14.
  • Each second portion 22 is connected and extends into a corresponding first portion 21.
  • Each second portion 22 preferably has a main extension direction that is substantially radial and extends towards the inside of the hub 14.
  • the fins 19 are substantially L-shaped, with the second radial portion 22 and the first axial portion 21 located inside the hub 14 and the end portion 20 exiting therefrom.
  • Each end portion 20 has an internal edge 23 facing internally of the hub 14, i.e., towards the electric motor 4, and an external edge 24 facing externally of the hub 14, i.e. towards the blades 15.
  • the external edge 24 is at a radial distance from the axis R of rotation that is less than a radial distance of the lateral wall 17 from the axis R of rotation.
  • each portion 20 is slimmed in a radial direction relative to the corresponding first portion 21 of the respective fin 19.
  • the hub 14 has a plurality of through-holes 25 at a connecting zone 26 of the end wall 16 and the lateral wall 17.
  • the connecting zone 26 preferably has a curved extension and the holes 25 preferably have rounded edges.
  • annular wall 11 delimits, with the external surface of the electric motor 4, an annular channel 27.
  • the end portions 20 of the fins 19 are preferably at least partly inserted internally of the channel 27.
  • the portions 20 are slimmed as described in the foregoing so as to be inserted internally of the channel 27.
  • the lateral wall 11 of the ring 10 preferably has a radial dimension substantially corresponding to the radial dimension of the hub 14 and in particular of the lateral wall 17 thereof. More precisely, a substantially cylindrical internal surface of the wall 1 has the same internal diameter as the lateral wall 17 of the hub 14.
  • a component of the tangential flow for cooling the cap is determined by the portions 20 of the fins which extend outside the hub internally of the annular channel 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un ventilateur axial (5) qui possède un axe (R) de rotation et qui comprend un moyeu qui comprend une paroi inférieure (16) et une paroi latérale (17) qui s'étend depuis la paroi inférieure (16) et qui possède un bord périphérique (18) sur un côté opposé par rapport à la paroi inférieure (16) le long de l'axe (R) de rotation ; le ventilateur comprenant une pluralité de pales (15) qui s'étendent depuis la paroi latérale (17) à l'extérieur du moyeu (14), et au moins une ailette (19) située à l'intérieur du moyeu (14) et comprenant une partie d'extrémité (20) qui se projette axialement au-delà de la paroi inférieure (16) et de la paroi latérale (17) en formant une structure cupuliforme du moyeu (14), le ventilateur comprenant une partie d'extrémité (20) qui se projette axialement au-delà du bord périphérique (18) à l'extérieur du moyeu (14).
PCT/IB2016/053893 2015-06-29 2016-06-29 Ventilateur et groupe de ventilation comprenant le ventilateur Ceased WO2017002039A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US15/739,511 US20180187688A1 (en) 2015-06-29 2016-06-29 A fan and a ventilation group comprising the fan
CN201680037080.5A CN107709791B (zh) 2015-06-29 2016-06-29 风扇和包括该风扇的通风组件
KR1020177037620A KR102560506B1 (ko) 2015-06-29 2016-06-29 팬 및 상기 팬을 포함하는 벤틸레이션 그룹
BR112017028106A BR112017028106A2 (pt) 2015-06-29 2016-06-29 ventilador axial e grupo de ventilação
JP2017568287A JP2018519471A (ja) 2015-06-29 2016-06-29 ファン及びファンを備える換気ユニット
EP16745173.1A EP3314128B1 (fr) 2015-06-29 2016-06-29 Ventilateur et groupe de ventilation comprenant le ventilateur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB20151741 2015-06-29
IT102015000028547 2015-06-29

Publications (1)

Publication Number Publication Date
WO2017002039A1 true WO2017002039A1 (fr) 2017-01-05

Family

ID=54011840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/053893 Ceased WO2017002039A1 (fr) 2015-06-29 2016-06-29 Ventilateur et groupe de ventilation comprenant le ventilateur

Country Status (7)

Country Link
US (1) US20180187688A1 (fr)
EP (1) EP3314128B1 (fr)
JP (1) JP2018519471A (fr)
KR (1) KR102560506B1 (fr)
CN (1) CN107709791B (fr)
BR (1) BR112017028106A2 (fr)
WO (1) WO2017002039A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12258971B1 (en) 2023-09-13 2025-03-25 Honda Motor Co., Ltd. Fan assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050682A2 (fr) * 1999-05-07 2000-11-08 GATE S.p.A. Motoventilateur, notamment pour l' échancheur de chaleur pour véhicule automobile
EP1621773A1 (fr) * 2004-07-30 2006-02-01 Siemens Aktiengesellschaft Ventilateur de refroidissement avec moteur électrique
US20060251509A1 (en) * 2004-02-03 2006-11-09 Alessandro Spaggiari Axial fan

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161367A1 (de) * 2001-12-14 2003-07-03 Conti Temic Microelectronic Elektrische Antriebseinheit
EP1622243B1 (fr) * 2004-07-30 2009-12-16 Brose Fahrzeugteile GmbH & Co. KG, Würzburg Moteur électrique
TWI300284B (en) * 2005-04-18 2008-08-21 Delta Electronics Inc Heat-dissipation structure of motor
TWI327457B (en) * 2006-03-03 2010-07-11 Delta Electronics Inc Fan, motor and impeller thereof
DE102010001354A1 (de) * 2009-08-26 2011-03-03 Robert Bosch Gmbh Gebläse
IT1404254B1 (it) * 2011-01-25 2013-11-15 Gate Srl Ventola, particolarmente per un gruppo di ventilazione per uno scambiatore di calore di un autoveicolo
ITTO20120765A1 (it) * 2012-09-05 2014-03-06 Johnson Electric Asti S R L Gruppo di ventilazione, particolarmente per uno scambiatore di calore di un veicolo

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050682A2 (fr) * 1999-05-07 2000-11-08 GATE S.p.A. Motoventilateur, notamment pour l' échancheur de chaleur pour véhicule automobile
US20060251509A1 (en) * 2004-02-03 2006-11-09 Alessandro Spaggiari Axial fan
EP1621773A1 (fr) * 2004-07-30 2006-02-01 Siemens Aktiengesellschaft Ventilateur de refroidissement avec moteur électrique

Also Published As

Publication number Publication date
US20180187688A1 (en) 2018-07-05
CN107709791B (zh) 2020-09-15
EP3314128A1 (fr) 2018-05-02
BR112017028106A2 (pt) 2018-08-28
JP2018519471A (ja) 2018-07-19
EP3314128B1 (fr) 2020-10-21
KR20180019615A (ko) 2018-02-26
CN107709791A (zh) 2018-02-16
KR102560506B1 (ko) 2023-07-28

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