EP1851442A1 - Procede de fabrication d'un mini-ventilateur et mini-ventilateur fabrique selon ce procede - Google Patents

Procede de fabrication d'un mini-ventilateur et mini-ventilateur fabrique selon ce procede

Info

Publication number
EP1851442A1
EP1851442A1 EP05814941A EP05814941A EP1851442A1 EP 1851442 A1 EP1851442 A1 EP 1851442A1 EP 05814941 A EP05814941 A EP 05814941A EP 05814941 A EP05814941 A EP 05814941A EP 1851442 A1 EP1851442 A1 EP 1851442A1
Authority
EP
European Patent Office
Prior art keywords
fan
permanent magnet
plastic
support member
outer rotor
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.)
Granted
Application number
EP05814941A
Other languages
German (de)
English (en)
Other versions
EP1851442B1 (fr
Inventor
Rodica Peia
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 St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen 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 Ebm Papst St Georgen GmbH and Co KG filed Critical Ebm Papst St Georgen GmbH and Co KG
Publication of EP1851442A1 publication Critical patent/EP1851442A1/fr
Application granted granted Critical
Publication of EP1851442B1 publication Critical patent/EP1851442B1/fr
Not-in-force 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • 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
    • F04D25/062—Details of the bearings
    • 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
    • F04D25/064—Details of the rotor
    • 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
    • F04D25/0666—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump a sensor is integrated into the pump/motor design
    • 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
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/53—Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/507—Magnetic properties
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/49245—Vane type or other rotary, e.g., fan

Definitions

  • the invention relates to a method for producing a mini-fan, and it relates to a mini-fan, which is obtainable by this method.
  • Such fans are also referred to as small or micro fan.
  • sensor fans are used for air measurement. These have e.g. an outer diameter of 30 mm, i. it is according to the technical usage of mini fans.
  • Such mini fans are also used to cool processors in computers, for example
  • the fans of the ebm-papst series 250 have dimensions of 8 x 25 x 25 mm, those of the ebm-papst series 400F dimensions of 10 x 40 x 40 mm, those of the ebm-papst series 400 of 20 x 40 x 40 mm, and the fans of the ebm-papst 600 series of 25 x 60 x 60 mm.
  • the power consumption of such fans is 0.4 ... 0.6 W for the 250 series, 0.7 to 0.9 W for the 400F series and 0.9 ... 3 for the 400 and 600 series , 4 W.
  • the weight is eg 5 g in the 250 series, 17 to 27 g in the 400 / 400F series, and 85 g in the 600 series.
  • the rotor shaft has z. B. often only the thickness of a knitting needle and can therefore be easily bent when carefree handling, causing the fan is unusable.
  • this object is achieved by a method according to claim 1 and a mini fan according to claim 3.
  • a method according to claim 1 manufactures the rotor in the two-component injection molding, it is very stable, because even the injected permanent magnet contributes to the stability of the fan, so that in a surprising way, the engine is very quiet.
  • the motors are of very high, consistent quality.
  • the miniaturization of such parts is greatly facilitated by this type of manufacture.
  • Fig. 1 is a partially sectioned illustration of a space
  • FIG. 2 shows a variant of FIG. 1,
  • Fig. 3 is an illustration of a contact pin with which the mini fan can be plugged onto a circuit board, said fastening part allows both an electrical and a mechanical connection of the fan to the circuit board
  • Fig. 4 is a section, taken along the line IV - IV of Fig. 3rd
  • Fig. 1 shows a mini-fan 10, which may in practice usually have a diameter of 30 to 35 mm, but is greatly enlarged for reasons of clarity. It has an outer housing 12 made of an insulating plastic, and this housing has at the top an air inlet opening 14 and laterally air outlet openings 16, of which in Fig. 1, only the rear is visible.
  • the housing 12 widens via an annular portion 18 to a cylindrical portion 20th
  • a circuit board 22 On the annular portion 18 is a circuit board 22, and on this a sealing ring 24 is attached from sponge rubber in the manner shown.
  • the circuit board 22 is substantially round and has in its center a transverse web 26, of which in Fig. 1, only the rear half is visible and on which an NTC resistor 28 is arranged, which serves as a temperature sensor for air, which in the direction of Arrows 30, 32 flows from above through the opening 14 and flows through the lateral opening 16.
  • the NTC resistor 28 is connected by tracks 34 with contact pins 36, 38 which are arranged in the cylindrical part 20 of the outer housing 12 in the manner shown.
  • These contact pins 36, 38 each have a bottom contacting foot 36 'and 38', each of which has two resilient elements 40, 42, which are shown in Fig. 4.
  • the Kunststofftechnischsfutee 36 'and 38' are inserted as shown in FIG. 3 and 4 in an opening 44 of a printed circuit board 46.
  • This opening 44 is connected to a metal layer 47, which extends through the opening 44 and is connected to a conductor track 48 of the printed circuit board 46.
  • the Kunststoff Industriessffinie 36 ', 38' so make electrical connections from the circuit board 46 to the fan 10 and its temperature sensor 28 ago.
  • the electronics for the commutation is not in the fan 10 itself, but on the associated circuit board 46. However, it is within the scope of the invention also possible, these components in the fan 10th to arrange yourself.
  • the cylindrical part 20 of the outer housing 12 is closed at the bottom by a circuit board 50, in the middle of a metal bushing 52 is arranged. This is surrounded by a cylindrical portion 54 which is integral with the circuit board 50 and which merges at its upper end in an annular disc 56, which forms a bobbin 57 for a stator winding 58 together with the parts 50 and 54.
  • the board 50 has notches 51 at its outer edge, through which the contact pins 36 and 38 and other contact pins 53 protrude.
  • the rotor 62 has a plastic support member 64 having in its center a hub 66 into which is injected the upper end of the shaft 60 which has a knurl 68 for better anchoring.
  • the outer rotor 62 has approximately the shape of an upside-down shell and has at its periphery a rim portion 70 which extends approximately parallel to the shaft 60.
  • a permanent magnet 72 is injected directly in the two-component injection molding process.
  • the magnet 72 contains hard ferrites in a matrix of plastic, and therefore this plastic with its Hartferritteilchen 74, which can be represented naturally only schematically, e.g. be injected as a ring in the support member 64, wherein the interfaces, which is symbolized by dotted lines 76, intimately connect by melting the plastics.
  • the magnet ring 72 is radially magnetized in a suitable device, as shown symbolically in FIG. 1 by the letters N (north pole) and S (south pole) in the usual way.
  • radially extending fan blades 80 are formed, that is, it is preferably a radial fan.
  • a radial fan Integral with the support member 64 radially extending fan blades 80 are formed, that is, it is preferably a radial fan.
  • the free end 82 of the shaft 60 forms a thrust bearing with the local portion 83 of the board 50, which is opposite to this end 82.
  • the end 82 of the shaft 60 is pressed down against the portion 83, and this is done by the magnetic ring 72 is offset relative to the cylindrical portions shown in Fig. 1, 84, 86 of a Klauenpolteils 88 in the axial direction. In this way, the magnetic ring 72 is pulled by an axial force F down.
  • Fig. 2 shows a variant of the invention.
  • the support member 64 ' here has an axial projection 90, and the magnetic ring 72' is injected during injection around this projection 90 around, so that there can be an even more intimate connection of the plastics.
  • many variants are possible here, e.g. Nubs, grooves, teeth, etc., to make the connection as good as possible.
  • the variant according to FIG. 1 is preferred because there the volume of the ring magnet 72 is greater than in FIG. 2, which improves the engine performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP05814941A 2005-02-24 2005-12-10 Procede de fabrication d'un mini-ventilateur et mini-ventilateur fabrique selon ce procede Not-in-force EP1851442B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005003413U DE202005003413U1 (de) 2005-02-24 2005-02-24 Minilüfter
PCT/EP2005/013260 WO2006089577A1 (fr) 2005-02-24 2005-12-10 Procede de fabrication d'un mini-ventilateur et mini-ventilateur fabrique selon ce procede

Publications (2)

Publication Number Publication Date
EP1851442A1 true EP1851442A1 (fr) 2007-11-07
EP1851442B1 EP1851442B1 (fr) 2009-04-15

Family

ID=35722388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05814941A Not-in-force EP1851442B1 (fr) 2005-02-24 2005-12-10 Procede de fabrication d'un mini-ventilateur et mini-ventilateur fabrique selon ce procede

Country Status (6)

Country Link
US (1) US8727746B2 (fr)
EP (1) EP1851442B1 (fr)
JP (1) JP4866865B2 (fr)
AT (1) ATE428859T1 (fr)
DE (2) DE202005003413U1 (fr)
WO (1) WO2006089577A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2132861B1 (fr) * 2007-02-28 2018-11-21 SEW-EURODRIVE GmbH & Co. KG Moteur électrique
JP2012241601A (ja) * 2011-05-18 2012-12-10 Asmo Co Ltd ファンモータ
CN107165843A (zh) * 2017-07-10 2017-09-15 叶露微 一种永磁同步电动机直接驱动的小功率换气扇
DE102018108861A1 (de) * 2018-04-13 2019-10-17 Ebm-Papst St. Georgen Gmbh & Co. Kg Verfahren zur Herstellung eines gewuchteten Rotationskörpers

Family Cites Families (23)

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DE2818255A1 (de) * 1978-04-26 1979-11-08 Teldix Gmbh Magnetische lageranordnung
JPS60191509A (ja) * 1984-03-12 1985-09-30 Fujitsu Ltd 低雑音増幅回路装置
GB2185074B (en) 1985-11-08 1990-12-19 Papst Motoren Gmbh & Co Kg Fan
GB2227793B (en) 1985-11-08 1990-10-31 Papst Motoren Gmbh & Co Kg Miniature axial fan
JPS6310760A (ja) * 1986-07-01 1988-01-18 Sumitomo Pharmaceut Co Ltd イミド誘導体の新規製造法
JPH01275113A (ja) * 1988-04-28 1989-11-02 Yazaki Corp 回転プラスチックマグネットの製造装置
JPH0434873U (fr) * 1990-07-16 1992-03-24
JPH07203645A (ja) * 1993-12-30 1995-08-04 Mabuchi Motor Co Ltd 小型モータ及びその回転子の製造方法
ATE190775T1 (de) * 1995-09-29 2000-04-15 Papst Motoren Gmbh & Co Kg Elektronisch kommutierter aussenläufermotor
DE29718082U1 (de) * 1997-10-11 1999-02-11 Papst Motoren Gmbh & Co Kg Kleinlüftereinheit, insbesondere zur Verwendung als Leiterplattenlüfter
DE19800570B4 (de) * 1998-01-09 2004-09-02 Bayerische Motoren Werke Ag Gebläse mit einem Lüfterrad
DE19930912A1 (de) 1998-01-09 2001-02-01 Bayerische Motoren Werke Ag Gebläse mit einem Lüfterrad und und einem zugehörigen Antriebsmotor
JP2001178087A (ja) * 1999-12-03 2001-06-29 Jianzhun Electric Mach Ind Co Ltd 電動機のローターとその製造方法
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AU2002361020A1 (en) * 2002-01-11 2003-07-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Miniature fan or micro-fan
JP2003348795A (ja) * 2002-05-23 2003-12-05 Nidec Shibaura Corp アウターローター送風機
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Also Published As

Publication number Publication date
ATE428859T1 (de) 2009-05-15
WO2006089577A1 (fr) 2006-08-31
DE202005003413U1 (de) 2006-07-13
JP2008531905A (ja) 2008-08-14
DE502005007113D1 (de) 2009-05-28
EP1851442B1 (fr) 2009-04-15
US8727746B2 (en) 2014-05-20
US20090232677A1 (en) 2009-09-17
JP4866865B2 (ja) 2012-02-01

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