EP2068003B1 - Ventilateur de refroidissement étanche, à l'épreuve de la poussière et du brouillard salin - Google Patents

Ventilateur de refroidissement étanche, à l'épreuve de la poussière et du brouillard salin Download PDF

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Publication number
EP2068003B1
EP2068003B1 EP20080164436 EP08164436A EP2068003B1 EP 2068003 B1 EP2068003 B1 EP 2068003B1 EP 20080164436 EP20080164436 EP 20080164436 EP 08164436 A EP08164436 A EP 08164436A EP 2068003 B1 EP2068003 B1 EP 2068003B1
Authority
EP
European Patent Office
Prior art keywords
foresaid
waterproof
proof
round table
sleeve
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.)
Not-in-force
Application number
EP20080164436
Other languages
German (de)
English (en)
Other versions
EP2068003A3 (fr
EP2068003A2 (fr
Inventor
Liu Ching Tang
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.)
PROTECHNIC ELECTRIC CO Ltd
Original Assignee
PROTECHNIC ELECTRIC CO Ltd
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
Priority claimed from CNU2007200609180U external-priority patent/CN201125876Y/zh
Priority claimed from CNU2008200468755U external-priority patent/CN201196160Y/zh
Priority claimed from CNU2008200468736U external-priority patent/CN201196159Y/zh
Priority claimed from TW97208258U external-priority patent/TWM343371U/zh
Priority claimed from TW97210242U external-priority patent/TWM347480U/zh
Priority claimed from TW97210243U external-priority patent/TWM349176U/zh
Application filed by PROTECHNIC ELECTRIC CO Ltd filed Critical PROTECHNIC ELECTRIC CO Ltd
Publication of EP2068003A2 publication Critical patent/EP2068003A2/fr
Publication of EP2068003A3 publication Critical patent/EP2068003A3/fr
Publication of EP2068003B1 publication Critical patent/EP2068003B1/fr
Application granted granted Critical
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F04D25/0693—Details or arrangements of the wiring
    • 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
    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans

Definitions

  • the invention relates to a cooling fan, in particular to a waterproof, dust-proof and salt fog-proof cooling fan, as disclosed for example in DE-U-20302576 .
  • the cooling fan is mainly composed of rotor, stator, rolling body and circuit board.
  • the application environment of the fan is getting worse and worse from CPU, server, power supply to communication equipment and outdoor unit.
  • rusted silicon steel sheet on the stator and damaged assembly on the circuit by short circuit easily cause fail of the fan in normal working.
  • the vacuum coating technology is to coat a film on the stator and the circuit board for waterproof effect. Because the film closely affixes on the surface of the object, the inner stress of the film during coating easily damages the electrical components on the circuit board causing fail of the fan. In addition, because the film is very thin, the film easily ionizes in salt fog environment causing damaged electrical components by short circuit and the fail of the fan.
  • Glue feed technology is to firstly equip the stator and the circuit board on to the fan frame with mould, and then to place this part into the mould, after that to inject the glue in, finally to take it out from the mould after solidification of the glue. It mainly uses glue to fill the space surrounding the stator and the circuit board and the inner space for waterproof effect.
  • the thick glue layer will encase the electrical components and causes poor heat dissipation, and that will cause burnout of the electrical components and fail of the fan.
  • inner stress will be caused during solidification of the glue causing damaged electrical components and the fail of the fan.
  • DE-U-20302576 does not suggest the features of a sealing ring arranged in an U-shaped slot, and a further sealing ring with dust removal blades as defined in claim 1 of the present invention.
  • a waterproof, dust-proof and salt fog-proof cooling fan according to claim 1.
  • a fixed round table is arranged at center part of the fan frame, a fixed sleeve is arranged at center of the round table; an annular U-shaped slot is arranged at the end surface of the round table, and a sealing ring is arranged in the U-shaped slot.
  • the cooling fan also comprises a waterproof cover body.
  • the waterproof cover body is fixedly connected on the fan frame through the sealing ring. It also comprises an axial fan hub with a reversed taper shaped fixed table stretching from the center of the inner cavity of the axial fan hub, and the fixed table connects with the main shaft.
  • the foresaid round table is a blind hole with its opening at bottom side of the fan frame, the round table, sealing ring and the foresaid cover body form a sealed cavity, and the stator and circuit board assembly are arranged in the sealed cavity.
  • a sealing ring stretches downward from the top side of the inner cavity of the foresaid axial fan hub, couples of dust removal blades at equal interval stretch from the outer profile of the sealing ring.
  • the foresaid sealing ring reversely sleeves on the fixed sleeve and forms a reverse U-shaped labyrinth channel cooperating with the foresaid fixed table.
  • slots are arranged with interval in between at the end surface of the foresaid round table, four buckles cooperating with the slots stretch from the side wall of profile of the foresaid waterproof cover body, and the buckles cooperating with the slots fix the waterproof cover body on the foresaid round table.
  • a column stretches from the center of the foresaid waterproof cover body from the same direction of buckle, and the column directly sleeves on the fixed sleeve at the center of the round table.
  • a transverse guide pipe on the side wall of the outer profile of the foresaid waterproof cover body, a sleeve is sleeved on the outer surface of the guide pipe, and the lead wire of the foresaid circuit board is led out from the foresaid guide pipe and the sleeve.
  • a waterproof head cover arranged on the other end of the sleeve to cover the gap between the guide pipe and lead wire for ensuring a secure sealing performance of the sealed cavity.
  • a shaft arranged in the fixed sleeve at the center of the foresaid round table, and the shaft connects with the main shaft at the center of the fanblade and/or the axial fan hub.
  • the invention has the following advantages that the application of the sealed cavity for sealing the stator and circuit board assembly breaks away from the traditional vacuum coating and glue feed technology featuring effective protection for the stator and circuit board assembly and achieving the goal of waterproof, dust-proof and salt fog-proof performance.
  • the application of slot and buckle benefits a secure fastening effect and simple installation.
  • the application of structure that lead wires are led out from the guide pipe and sleeve causes a convenient air-leakage test for the sealed cavity to ensure the quality of the fan.
  • a waterproof head cover is arranged at the end of the sleeve improving the air-tightness of the sealed cavity. In addition, it is with an excellent manoeuvrability and free of poor air-tightness of the cavity caused by the wires led out.
  • a waterproof, dust-proof and salt fog-proof fan comprises a fan frame 6.
  • a fixed round table 66 is arranged at center part of the fan frame 6, and a fixed sleeve 65 is arranged at center of the round table 66.
  • a blind hole 62 is equipped between the round table 66 and the sleeve 65, and the stator and circuit board assembly 5 are arranged inside the blind hole 62.
  • the invention also comprises a waterproof cover body 1, four buckles 11 cooperating with the slots stretch from the side wall of profile of the foresaid waterproof cover body 1, and the buckles 11 cooperating with the slots 63 fix the waterproof cover body 1 on the foresaid round table 66.
  • a column 13 stretches from the center of the foresaid waterproof cover body 1 from the same direction of buckle 11, and the column 13 sleeves on the fixed sleeve 65 at the center of the round table 66 at the same time cooperating with the buckle 11 and slot 63.
  • a transverse guide pipe 12 on the side wall of the profile of the foresaid waterproof cover body 1 a sleeve 2 is sleeved on the outer surface of the guide pipe 12, and the lead wire 52 of the foresaid circuit board assembly 5 is led out from the foresaid guide pipe 12 and the sleeve 2.
  • a waterproof head cover 3 arranged on the other end of the sleeve 2 to cover the gap between the guide pipe 2 and lead wire 52.
  • It also comprises an axial fan hub 8 with a reversed taper shaped fixed table 82 stretching from the center of the inner cavity of the axial fan hub 8, and the fixed table 82 connects with the main shaft 81, the main shaft 81 connects with the shaft for cooperation.
  • an annular permanent magnet arranged in the axial fan hub serving mainly to provide a permanent magnetic field.
  • the foresaid sealing ring 83 reversely sleeves on the fixed sleeve 65 and forms a reverse U-shaped labyrinth channel cooperating with the foresaid fixed table 82.
  • the design of labyrinth channel benefits an effective prevention or isolation of outside medium from coming into the fixed sleeve 65 to protect the shaft 61 achieving a normal work no matter the cooling fan runs or stops.
  • Couples of dust removal blades 84 stretch from the outer profile of the sealing ring 83 in the axial fan hub 8. When the fan runs, the effect of centrifugal force blocks off the outside medium serving as an extra protection for the shaft 61 in the fixed sleeve 65 to achieve the normal work.

Landscapes

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

Claims (5)

  1. Ventilateur de refroidissement étanché à l'eau, à la poussière et au brouillard salin, comprenant :
    - un cadre de ventilateur (6), dans lequel
    - une table ronde fixe (66) est agencée sur une partie centrale du cadre de ventilateur (6),
    - un manchon fixe (65) est agencé au centre de la table ronde fixe (66),
    - une fente annulaire en forme de U (64) est agencée dans la surface terminale de la table ronde fixe (66),
    - une bague d'étanchéité (4) est agencée dans la fente en forme de U (64),
    - un corps de couverture étanche à l'eau (1), le corps de couverture étanche à l'eau (1) étant relié au cadre de ventilateur (6) par le biais de la bague d'étanchéité (4),
    - un moyeu de ventilateur axial (8) avec une table fixe en forme de cône renversé (82) s'étendant à partir du centre de la cavité intérieure du moyeu de ventilateur axial (8), et
    - la table fixe en forme de cône (82) est reliée à un arbre principal (81), ladite table ronde fixe (66) étant un trou borgne (62), avec son ouverture détournée du moyeu de ventilateur axial,
    - la table ronde fixe (66), la bague d'étanchéité (4) et ledit corps de couverture (1) forment une cavité scellée, et
    - un stator du ventilateur de refroidissement et un ensemble de circuit imprimé (5) sont agencés dans la cavité scellée, et
    - une autre bague d'étanchéité (83) s'étend vers le bas à partir de la surface intérieure de la cavité intérieure dudit moyeu de ventilateur axial (8),
    - des couples de lames d'élimination de poussière (84) à intervalles égaux s'étendent à partir du profil extérieur de l'autre bague d'étanchéité (83),
    - et ladite autre bague d'étanchéité (83) coulisse en sens inverse sur le manchon fixe (65) et forme un canal labyrinthe en forme de U renversé coopérant avec ladite table fixe (82).
  2. Ventilateur de refroidissement étanché à l'eau, à la poussière et au brouillard salin selon la revendication 1, dans lequel
    - quatre fentes (63) sont agencées par intervalles dans la surface terminale de ladite table ronde (66),
    - quatre boucles (11) coopérant avec les fentes (63) s'étendent à partir de la paroi latérale du profil dudit corps de couverture étanche à l'eau (1), et
    - les boucles (11) coopérant avec les fentes (63) fixent le corps de couverture étanche à l'eau (1) sur ladite table ronde (66).
  3. Ventilateur de refroidissement étanché à l'eau, à la poussière et au brouillard salin selon la revendication 1, dans lequel
    - un tuyau de guidage transversal (12) est agencé sur la paroi latérale du profil dudit corps de couverture étanche à l'eau (1),
    - un manchon (2) est enfoncé sur la surface extérieure du tuyau de guidage (12), et
    - le fil conducteur (52) dudit circuit imprimé (5) est guidé à l'extérieur dudit tuyau de guidage (12) et du manchon (2), et
    - un cache supérieur étanche à l'eau (3) est agencé à l'autre extrémité du manchon (2) pour couvrir l'espace entre le tuyau de guidage (2) et le fil conducteur (52), afin d'assurer une efficacité de scellage fiable pour la cavité scellée.
  4. Ventilateur de refroidissement étanché à l'eau, à la poussière et au brouillard salin selon la revendication 1, dans lequel
    - une colonne (13) s'étend depuis le centre dudit corps de couverture étanche à l'eau (1) en partant dans la même direction que la boucle (11), et
    - la colonne (13) s'enfonce directement sur le manchon fixe (65) au centre de la table ronde (66).
  5. Ventilateur de refroidissement étanché à l'eau, à la poussière et au brouillard salin selon la revendication 1, dans lequel
    - un arbre (61) est agencé dans le manchon fixe (65) au centre de ladite table ronde (66), sachant que
    - l'arbre (61) rejoint l'arbre principal (81) au centre du moyeu de ventilateur axial (8).
EP20080164436 2007-12-05 2008-09-16 Ventilateur de refroidissement étanche, à l'épreuve de la poussière et du brouillard salin Not-in-force EP2068003B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CNU2007200609180U CN201125876Y (zh) 2007-12-05 2007-12-05 一种防水防盐雾的散热风扇
CNU2008200468736U CN201196159Y (zh) 2008-04-25 2008-04-25 防水风扇的导线出线结构
CNU2008200468755U CN201196160Y (zh) 2008-04-25 2008-04-25 非接触式轴承密封结构
TW97208258U TWM343371U (en) 2008-05-13 2008-05-13 Heat dissipating fan with waterproof and salty fog prevention functions
TW97210242U TWM347480U (en) 2008-06-10 2008-06-10 Non-contact type bearing sealing structure
TW97210243U TWM349176U (en) 2008-06-10 2008-06-10 Wiring structure for water-proof fan

Publications (3)

Publication Number Publication Date
EP2068003A2 EP2068003A2 (fr) 2009-06-10
EP2068003A3 EP2068003A3 (fr) 2010-06-23
EP2068003B1 true EP2068003B1 (fr) 2015-03-18

Family

ID=40394453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080164436 Not-in-force EP2068003B1 (fr) 2007-12-05 2008-09-16 Ventilateur de refroidissement étanche, à l'épreuve de la poussière et du brouillard salin

Country Status (1)

Country Link
EP (1) EP2068003B1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022350B (zh) * 2009-09-09 2012-05-30 建准电机工业股份有限公司 鼓风扇
DE102010012392A1 (de) 2010-03-22 2011-09-22 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilator
US20120032542A1 (en) * 2010-08-05 2012-02-09 Rotechnic Company Limited Water-proof dust-proof and salty-mist-proof cooling fan
CN102080665A (zh) * 2010-10-18 2011-06-01 苏州顶裕节能设备有限公司 拼接式固定架
US9249788B2 (en) * 2011-01-11 2016-02-02 Mitsuba Corporation Electric fan
US8742637B2 (en) * 2011-06-08 2014-06-03 Asia Vital Components Co., Ltd. Waterproof and salt spray-resistant fan motor structure
CN103452913B (zh) * 2012-06-01 2018-04-03 浙江三花制冷集团有限公司 循环泵中转子结构的装配方法
CN103438019A (zh) * 2013-08-14 2013-12-11 甘凤香 风扇定子防水结构及其制造方法、辅助盖和环氧树脂ab胶
WO2015067105A1 (fr) * 2013-11-06 2015-05-14 中山大洋电机股份有限公司 Ventilateur et système d'échange de chaleur et système d'échange de froid d'unité intérieure de climatiseur l'utilisant
JP6126984B2 (ja) * 2013-12-18 2017-05-10 山洋電気株式会社 防水型軸流ファン
CN114607637A (zh) * 2022-03-28 2022-06-10 株洲亿杰电子科技有限公司 散热风扇的灌胶防水方法
DE102022205348A1 (de) 2022-05-30 2023-11-30 Robert Bosch Gesellschaft mit beschränkter Haftung Motorkühlvorrichtung
EP4293234A1 (fr) * 2022-06-17 2023-12-20 FRONIUS INTERNATIONAL GmbH Ventilateur, dispositif de refroidissement doté d'un tel ventilateur et boitier doté d'un tel dispositif de refroidissement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3226853B2 (ja) * 1997-09-30 2001-11-05 株式会社荏原製作所 ポンプの配管接続部構造
US6572346B2 (en) * 2001-09-24 2003-06-03 Hsieh Hsin-Mao Cooling fan
US6585497B2 (en) * 2001-10-05 2003-07-01 Adda Corporation Cooling fan dust seal
DE50300874D1 (de) * 2002-03-02 2005-09-01 Ebm Papst St Georgen Gmbh & Co Lüfter mit integriertem ip-schutz
JP4108488B2 (ja) * 2003-01-17 2008-06-25 山洋電気株式会社 防水型ブラシレスファンモータ
DE202006018454U1 (de) * 2005-12-09 2007-04-19 Ebm-Papst St. Georgen Gmbh & Co. Kg Elektronisch kommutierter Außenläufermotor

Also Published As

Publication number Publication date
EP2068003A3 (fr) 2010-06-23
EP2068003A2 (fr) 2009-06-10

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