US20050106046A1 - Miniature fan or micro-fan - Google Patents

Miniature fan or micro-fan Download PDF

Info

Publication number
US20050106046A1
US20050106046A1 US10500541 US50054104A US2005106046A1 US 20050106046 A1 US20050106046 A1 US 20050106046A1 US 10500541 US10500541 US 10500541 US 50054104 A US50054104 A US 50054104A US 2005106046 A1 US2005106046 A1 US 2005106046A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
region
fan
motor
circuit board
air duct
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.)
Abandoned
Application number
US10500541
Inventor
Wolfgang Winkler
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

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613Units 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
    • F04D25/0646Details of the stator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613Units 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
    • F04D25/0633Details of the magnetic circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21Devices for sensing speed or position, or actuated thereby
    • H02K11/215Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30Structural association with control circuits or drive circuits
    • H02K11/33Drive circuits, e.g. power electronics
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Abstract

A miniature fan or micro-fan (200) features a fan housing (150) through which a substantially annular air duct extends in the axial direction, there being arranged in a central region of the air duct an electronically commutated external-rotor motor (202) whose external rotor, equipped with at least one permanent magnet (86), carries an impeller wheel (204) that is arranged rotatably in the air duct. A circuit board configuration (168) has a motor region that is arranged in the central region of the air duct and carries at least one galvanomagnetic rotor position sensor that is controllable by the magnetic field of the permanent magnet (86) provided on the external rotor. The board has a component region for the reception of electronic components (170) of the external-rotor motor, which component region is arranged substantially outside the air duct, and which comprises a bridge portion, via which the motor region of the circuit board configuration is electrically connected to the component region (168).

Description

  • This application is a section 371 of PCT/EP02/13822, filed 6 DEC. 2002 and published 17 Jul. 2003 as WO 03-058 796-A1.
  • FIELD OF THE INVENTION
  • The invention relates to a miniature fan or micro-fan that is driven by an electronically commutated external-rotor motor.
  • BACKGROUND
  • Miniature fans or micro-fans serve, for example, to cool processors in computer, to cool small devices, etc., and they have very small dimensions. For example:
    • fans of PAPST series 250 have dimensions of 8×25×25 mm,
    • those of PAPST series 400F, dimensions of 10×40×40 mm,
    • those of PAPST series 400, 20×40×40 mm,
    • those of PAPST series 500, 50×50×15 mm, and
    • those of PAPST series 600, 60×60×25 mm.
  • The power consumption of such fans is 0.4-0.6 W for series 250, 0.7-0.9 W for series 400F, 0.9-1.6 W for series 400, and 0.8-3.4 W for series 600. This defines the preferred field of application of the present invention.
  • In fans that are driven by an electronically commutated external-rotor motor, the motor is large in relation to the overall size of the fan, which is disadvantageous in terms of the flow rate (V/t) and pressure increase Δp of the fan.
  • SUMMARY OF THE INVENTION
  • It is therefore an object of the invention to make available a new miniature fan or micro-fan.
  • According to the invention, this object is achieved by arranging a rotor position sensor centrally but other control components outside the air duct. It is thereby possible to mount the at least one rotor position sensor in space-saving fashion on the motor region of the circuit board configuration, and to arrange other components in a component region outside the air duct, thus allowing the annular air flow cross section to be made larger than previously. This permits larger fan blades to be used, and thus a greater flow rate and/or a greater pressure increase to be achieved for the same physical size.
  • Another manner of achieving the stated object is to arrange a motor region, of the control circuit board, on an inner side of the air duct between the carrier hub and the claw-pole stator. The combination according to this claim results, even in micro-fans, in very favorable values for flow rate and pressure increase, which are increasingly in demand nowadays. A compact design with a large annular air flow cross section, and consequently a particularly large flow rate, is thus obtained, so that a configuration of this kind according to the invention represents a particularly advantageous combination for miniature fans and micro-fans.
  • These approaches to achieving the object of the present invention create the possibility of increasing the number of functions for a miniature fan or micro-fan. For example, when miniature fans or micro-fans are used in open- or closed-loop control systems or management systems, they must not generate any electromagnetic interference, i.e. their electromagnetic compatibility (EMC) must meet high standards; this requires more components and more-complex circuits, which the invention now makes possible for the first time in compact form for miniature fans and micro-fans as well.
  • With the invention, it is also possible to integrate into the circuitry of such a fan additional functions that are now increasingly in demand, e.g. PWM open- and closed-loop control systems, analog rotation speed controllers, digital rotation speed controllers, programmable rotation speed controllers, switching thresholds for analog control systems, etc. This also allows reliable control of a miniature fan or micro-fan via a data bus such as those now common, for example, in motor vehicles. Further details and advantageous refinements of the invention are evident from the exemplary embodiments, in no way to be understood as a limitation of the invention, that are described below and illustrated in the drawings.
  • BRIEF FIGURE DESCRIPTION
  • FIG. 1 is a plan view of a double fan comprising two miniature fans or micro-fans, at very greatly enlarged scale;
  • FIG. 2 is an individual depiction of a circuit board used in the double fan of FIG. 1;
  • FIG. 3 shows a first embodiment of an individual miniature fan or micro-fan in which most of the electronic components are housed in a lateral housing part, the connection from the motor to the lateral components being accomplished via a flexible conductor;
  • FIG. 4 shows a second embodiment of a miniature fan, viewed in the direction of arrow IV of FIG. 5, in which most of the electronic components are housed in a lateral housing part, the connection from the motor to the lateral components being accomplished via a rigid conductor;
  • FIG. 5 is a section viewed along line V-V of FIG. 4;
  • FIG. 6 shows a third embodiment of a miniature fan, viewed in the direction of arrow VI of FIG. 7, in which most of the electronic components are housed in a narrow lateral housing part and the connection from the motor to the lateral components is accomplished via flexible stranded conductors;
  • FIG. 7 is a section viewed along line VII-VII of FIG. 6; and
  • FIG. 8 depicts a micro-fan according to the present invention at approximately actual size.
  • DETAILED DESCRIPTION
  • FIG. 1 shows, at greatly enlarged scale, a double fan 20 comprising a housing 22 in which two miniature fans or micro-fans 24, 26, each driven by an electronically commutated external-rotor motor 28, 30, are arranged next to one another. These motors 28, 30 are rigidly connected to housing 22 by way of struts (not depicted).
  • According to the invention and as shown in FIG. 2, a circuit board 32 that has, for motor 28, a first approximately annular part 34, on which a Hall IC 36 and four attachment points 38 for the winding ends of motor 28 are provided, is used in the double fan of FIG. 1. Part 34 is connected, via a first bridge 40 comprising printed conductors (not depicted), to a second approximately annular part 42 on which are located a Hall IC 44 and four attachment points 46 for the winding ends (not depicted) of motor 30.
  • Part 42 is connected, via a second bridge 48 comprising printed conductors (not depicted), to an (in this case, rectangular) part 50 on which most of the electronic components of the two motors 28, 30 are arranged. The connection to motors 28, 30 is accomplished via printed conductors (not depicted) on parts 34, 40, 42, 48, and 50.
  • Bridges 40, 48 are preferably arranged in such a way that they each extend under a strut that respectively connects motor 28, 30 to housing 22. For that purpose they can also, as applicable, extend obliquely.
  • FIG. 3 depicts an analogous arrangement 60 comprising a single miniature fan 62, implemented as an axial fan, that is shown greatly enlarged. This fan has a hub 64 that is connected via struts 66 to a housing 68. Mounted on this hub 64 is an external-rotor motor 70 that has an internal stator 72 having claw poles 74 and an annular winding 76. Rotating around internal stator 72 is an external rotor 80 having a rotor cup 82 made of plastic, into which is injection-embedded a magnetic yoke ring 84 on which is arranged an annular permanent magnet 86 that is radially magnetized. The blades of fan 62 are labeled 106, and are mounted on rotor cup 82. Located between internal stator 72 and hub 64 is a circuit board 90, connected to which electrically and mechanically is a flexible conductor 92 that leads to a circuit board 94 and is electrically and mechanically connected thereto. Most of the electronic components 96 of motor 70 are located on circuit board 94, with the exception of a Hall IC (not depicted) that is arranged on circuit board 90 in the region of the magnetic field of rotor 86, and is controlled by that magnetic field.
  • Circuit board 94 with its components 96 is located in a lateral housing part 98 that, after assembly, is sealed by a cover 100 on which circuit board 94 is secured by means of support members 102.
  • It is advantageous here that with this arrangement, cover 100 can be swung down to the right for assembly; and that after assembly, it can be connected in liquid-tight fashion to part 98. Flexible conductor 92 thus enables problem-free assembly.
  • FIGS. 4 and 5 show a miniature fan 110 comprising an approximately rectangular housing 112 that has an air duct 114 in which hub 118 of an external-rotor motor 120 is held by struts 116. As in FIG. 3, motor 120 has an internal stator 122 with claw poles 124 and an annular winding 126. An external rotor 128, on which five fan blades 130 of an axial fan are provided, rotates about internal stator 122.
  • A rigid circuit board 134, whose shape is indicated with dashed lines in FIG. 4, extends between hub 118 and internal stator 122. Circuit board 134 is approximately annular in the region between hub 118 and internal stator 122, and it carries there a Hall IC (not depicted) as well as connecting points for the attachment of annular winding 126. The reader is referred to the analogous depiction in FIG. 2.
  • From the annular portion of circuit board 134, a narrow bridge 136 goes to a larger, approximately rectangular part 138 on which the essential electronic components 140 of motor 120 are arranged (see FIG. 5). This part 138 is located in a space 144 that can be sealed by a cover 142.
  • As is directly apparent, circuit board 134 populated with components 140 can be very easily installed before cover 142 is put in place.
  • Housing 112 is equipped with four openings 148 for mounting it.
  • FIGS. 6 and 7 show, once again greatly enlarged, a miniature fan or micro-fan comprising a housing 150 in which is provided an air duct 152 in which hub 156 of a claw-pole external-rotor motor 158, whose external rotor 160 carries five blades 162, is mounted by means of struts 154.
  • Located between hub 156 and motor 158 is an annular circuit board 163 that, similarly to FIG. 2, carries a Hall IC (not depicted) and attachment points for stator winding 164 of motor 158.
  • Also provided, to the side of air duct 152, is a housing part 166 in which a circuit board 168 having electronic components 170 of motor 158 is mounted. Housing part 166 is closed after assembly by a cover 172.
  • The connection from circuit board 163 to circuit board 168 is accomplished here by means of flexible electrical conductors 174, called stranded conductors, that are permanently soldered onto the two circuit boards 163 and 168. Stranded conductors of this kind can be mounted particularly easily on a strut 154 of fan housing 150.
  • FIG. 8 shows a micro-fan 200 according to the invention. A one-centimeter length is indicated at the left as a scale; in other words, fan 200 is shown slightly enlarged. It has external dimensions of 35×40×8 mm, and a weight of approx. 5 g. Five fan blades 204 are arranged externally on its motor 202. The motor has a power consumption of 0.5 W and a rated rotation speed of 9000 rpm. Viewed as depicted in FIG. 8, fan 200 runs counterclockwise and blows toward the back.
  • Housing 150 of fan 200 has, on the right side as depicted, an enlargement in which circuit board 168 with (schematically indicated) electronic components 170 is located (see FIG. 7). The lateral enlargement is closed by cover 172, but in some cases can also be open. The connection from circuit board 168 to motor 202 is preferably accomplished in the manner depicted, in greatly enlarged fashion, in FIGS. 6 and 7.
  • Because components 170 are not arranged directly inside motor 202 but instead in the lateral enlargement of housing 150, the diameter of motor 202 can be correspondingly reduced, e.g. from 17.5 to 13.5 mm. With only slightly greater dimensions for housing 150, the flow rate V/t of fan 200 for a given static pressure Δpf thus rises approximately 80 to 110%, e.g. from 1.5 m3/h to 3.2 m3/h. The invention thus allows an improved flow rate, and consequently better cooling performance, to be obtained in such micro-fans with very simple means.
  • Aspects common to all the approaches depicted are that they greatly simplify, even for very small fans, assembly of the electronics for the fan's electronically commutated drive motor; that the volume and weight of the fan are not substantially increased; and that they enable new fan electronics functions for miniature fans and micro-fans of this kind.
  • Lateral installation of the motor electronics further allows the size of the motor hub to be reduced, i.e. the cross section for air passage, and therefore the fan performance and pressure increase of the fan, can be very easily increased by means of the invention.
  • Many variants and modifications are of course possible within the scope of the present invention.

Claims (19)

  1. 1. A miniature fan or micro-fan
    which comprises a fan housing (22; 68; 112; 150) through which a substantially annular air duct (114; 152) extends in the axial direction,
    there being arranged in a central region of the air duct (114; 152) a carrier hub (64; 118; 156) which carries the internal stator (72; 122) of an electronically commutated external-rotor motor (28, 30; 70; 158; 202) whose external rotor (80; 160), equipped with at least one permanent magnet (86), carries an impeller wheel (130; 162) that is arranged rotatably in the air duct (114),
    and comprising a circuit board configuration (32; 90, 94; 134; 163)
    which comprises a motor region (34; 42) that is arranged in the central region of the air duct between the carrier hub (64; 118) and the internal stator (122), and carries at least one galvanomagnetic rotor position sensor (36; 44) that is controllable by the magnetic field of the permanent magnet (86) provided on the external rotor,
    which comprises a component region (50; 138) for the reception of electronic components (96; 170) of the external-rotor motor, which component region is arranged substantially outside the air duct (114; 152); and
    which comprises a bridge portion (40; 48; 136; 174) by way of which the motor region (163) of the circuit board configuration is electrically connected to the component region (168).
  2. 2. The fan according to claim 1,
    wherein the motor region, bridge portion, and component region are implemented as parts of the same circuit board.
  3. 3. The fan according to claim 1 or 2,
    wherein the circuit board is implemented at least locally in flexible fashion.
  4. 4. The fan according to claim 3,
    wherein the flexible region is deflected between the motor region and component region.
  5. 5. The fan according to any of the preceding claims,
    wherein the circuit board configuration comprises flexible stranded conductors in the bridge region between the motor region and component region.
  6. 6. The fan according to any of the preceding claims,
    which is implemented as an axial fan.
  7. 7. The fan according to any of the preceding claims,
    wherein the internal stator is implemented with claw poles (74; 124) and an annular winding (76; 126; 164).
  8. 8. The fan according to claim 7,
    wherein the annular winding (76; 126; 164) is electrically connected to the motor region of the circuit board configuration.
  9. 9. The fan according to any of the preceding claims,
    wherein the component region (138; 168) is arranged substantially in a closed-off region (98; 142; 172) of the fan housing (22; 68).
  10. 10. The fan according to claim 9,
    wherein the closed-off region is sealed, preferably in liquid-tight fashion, by means of a cover (100; 172).
  11. 11. The fan according to claim 10,
    wherein the component region (94) of the circuit board configuration is mounted on the cover (100) by means of at least one support member (102).
  12. 12. The fan according to any of the preceding claims,
    which is controllable via a data bus.
  13. 13. The fan according to any of the preceding claims,
    wherein a bridge portion (40, 48; 136) of the circuit board configuration (32; 90, 94; 134; 163) extends in the region of a strut, the latter connecting the external-rotor motor (28, 30) to the fan housing (22).
  14. 14. A miniature fan or micro-fan
    which comprises a fan housing (22; 68; 112; 150) through which a substantially annular air duct (114; 152) extends in the axial direction, that housing being connected via at least one carrier member to a carrier hub (64; 118; 156)
    that is arranged in a central region of the air duct (114; 152) and carries the internal stator (72; 122), comprising an annular winding (76; 126; 164) and implemented as a claw-pole stator, of an electronically commutated external-rotor motor (28, 30; 70; 158) whose external rotor (80; 160), equipped with at least one permanent magnet (86), carries fan blades (130; 162) that are arranged in the air duct (114),
    and comprising a circuit board configuration (32; 90, 94; 134; 163)
    which comprises a motor region (34; 42) that is arranged on the radially inner side of the air duct between the carrier hub (64; 118) and the claw-pole stator (122), is adapted for electrical connection to the annular winding (76; 126; 164) of the claw-pole stator, and carries at least one galvanomagnetic rotor position sensor (36; 44) that is controllable by the magnetic field of the at least one permanent magnet (86) provided on the external rotor,
    which comprises a component region (50; 138) for the reception of electronic components (96) of the external-rotor motor, which component region is arranged substantially outside the air duct; and
    which comprises a bridge portion (40; 48; 136; 174) by way of which the motor region (163) of the circuit board configuration is electrically connected to the component region (168).
  15. 15. The fan according to claim 14,
    which is implemented as an axial fan.
  16. 16. The fan according to claim 14 or 15,
    wherein the component region (138; 168) is arranged substantially in a closed-off region (98; 142; 172) of the fan housing (22; 68).
  17. 17. The fan according to claim 16,
    wherein the closed-off region is sealed, preferably in liquid-tight fashion, by a cover (100; 172).
  18. 18. The fan according to claim 17,
    wherein the component region (94) of the circuit board configuration is mounted on the cover (100) by means of at least one support member (102).
  19. 19. The fan according to any of claims 14 through 18,
    which is controllable via a data bus.
US10500541 2002-01-11 2002-12-06 Miniature fan or micro-fan Abandoned US20050106046A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE20201272 2002-01-11
DE20201272.7 2002-01-11
PCT/EP2002/013822 WO2003058796A1 (en) 2002-01-11 2002-12-06 Miniature fan or micro-fan

Publications (1)

Publication Number Publication Date
US20050106046A1 true true US20050106046A1 (en) 2005-05-19

Family

ID=7967071

Family Applications (1)

Application Number Title Priority Date Filing Date
US10500541 Abandoned US20050106046A1 (en) 2002-01-11 2002-12-06 Miniature fan or micro-fan

Country Status (4)

Country Link
US (1) US20050106046A1 (en)
EP (1) EP1464106A1 (en)
DE (1) DE20219409U1 (en)
WO (1) WO2003058796A1 (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070010187A1 (en) * 2002-12-19 2007-01-11 Frank Hondmann Ventilator housing
WO2007054676A1 (en) * 2005-11-08 2007-05-18 Denis Ferranti Meters Limited Brushless electric motors
US20070134109A1 (en) * 2005-02-24 2007-06-14 Rodica Peia Mini-fan
US20080074009A1 (en) * 2006-09-25 2008-03-27 Yuji Enomoto Fan system, electric motor, and claw-pole motor
US20080219841A1 (en) * 2007-03-05 2008-09-11 Xcelaero Corporation Fan with strut-mounted electrical components
US20090010787A1 (en) * 2007-07-05 2009-01-08 Koito Manufacturing Co., Ltd. Motor pump for headlamp cleaner
US20090155097A1 (en) * 2007-12-17 2009-06-18 Wolfgang Arno Winkler Miniature fan
US20090232677A1 (en) * 2005-02-24 2009-09-17 Ebm-Papst St. Georgen Gmbh & Co. Kg Method of producing a mini fan and a mini fan produced according to said method
US20090263242A1 (en) * 2008-04-21 2009-10-22 Wolfgang Arno Winkler Fan arrangement
US20100128435A1 (en) * 2008-11-27 2010-05-27 Compal Electronics, Inc. Fan module for electronic device
US20100316508A1 (en) * 2009-06-15 2010-12-16 Alex Horng Heat-Dissipating Fan
US20100316514A1 (en) * 2009-06-15 2010-12-16 Alex Horng Heat-Dissipating Fan
WO2011138626A1 (en) * 2010-05-03 2011-11-10 Haiku Design SDN. BHD. A ceiling fan
US20110290456A1 (en) * 2010-05-28 2011-12-01 Industrial Technology Research Institute Micro cooling fan
CN102287384A (en) * 2010-06-17 2011-12-21 财团法人工业技术研究院 Miniature fan
US20120013209A1 (en) * 2010-07-19 2012-01-19 Maxon Motor Ag Small electric motor and method for producing a small electric motor
US20120163973A1 (en) * 2010-12-22 2012-06-28 Delta Electronics, Inc Fan device
CN102536858A (en) * 2010-12-22 2012-07-04 台达电子工业股份有限公司 Fan
WO2012161643A1 (en) * 2011-05-22 2012-11-29 Johan Linder Motor assembly comprising a brushless dc motor with control electronics
CN103153022A (en) * 2011-12-07 2013-06-12 台达电子工业股份有限公司 Air exhaust type cooling device
US20140341760A1 (en) * 2013-05-14 2014-11-20 Asia Vital Components (China) Co., Ltd. Fan structure with externally connected circuit
US20150104311A1 (en) * 2013-10-10 2015-04-16 Gentherm Automotive Systems (China) Ltd. Externally programmable fan
US20150124390A1 (en) * 2013-11-06 2015-05-07 Symbol Technologies, Inc. Environmental controls for mobile electronic devices
US20150152873A1 (en) * 2013-12-02 2015-06-04 Cooler Master (Kunshan) Co., Ltd. Fan structure
USD812006S1 (en) 2015-10-09 2018-03-06 Delta T Corporation Fan motor
US10036396B2 (en) 2013-03-08 2018-07-31 Coriant Operations, Inc. Field configurable fan operational profiles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204984999U (en) 2014-10-07 2016-01-20 日本电产株式会社 Fan

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700358A (en) * 1969-12-24 1972-10-24 Papst Motoren Kg Fan assembly for a ventilator
US4174563A (en) * 1977-12-12 1979-11-20 Raychem Corporation Wire wrap post terminator for stranded wire
US4823034A (en) * 1985-04-30 1989-04-18 Papst-Motoren Gmbh And Company Brushless DC motor with tolerance compensation spring
US5343104A (en) * 1992-05-27 1994-08-30 Nippon Densan Corporation Fan motor
US5532533A (en) * 1993-04-02 1996-07-02 Mitsubishi Denki Kabushiki Kaisha Servo motor integral with control apparatus
US5698919A (en) * 1992-11-09 1997-12-16 Minebea Kabushiki-Kaisha Integral bearing type electric motor
US5788467A (en) * 1996-06-10 1998-08-04 Fujitsu Limited Fan unit structure for an electronic device adapted to be inserted and mounted in a cabinet
US6013966A (en) * 1997-10-11 2000-01-11 Papst-Motoren Gmbh & Co. Kg Mini-fan unit especially for use as a fun printed circuit boards
US6132170A (en) * 1998-12-14 2000-10-17 Sunonwealth Electric Machine Industry Co., Ltd. Miniature heat dissipating fans with minimized thickness
US6281616B1 (en) * 1997-07-24 2001-08-28 Papst-Motoren Gmbh & Co. Kg Claw pole motor
US6509704B1 (en) * 1998-01-23 2003-01-21 Comair Rotron, Inc. Low profile motor

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700358A (en) * 1969-12-24 1972-10-24 Papst Motoren Kg Fan assembly for a ventilator
US4174563A (en) * 1977-12-12 1979-11-20 Raychem Corporation Wire wrap post terminator for stranded wire
US4823034A (en) * 1985-04-30 1989-04-18 Papst-Motoren Gmbh And Company Brushless DC motor with tolerance compensation spring
US5343104A (en) * 1992-05-27 1994-08-30 Nippon Densan Corporation Fan motor
US5698919A (en) * 1992-11-09 1997-12-16 Minebea Kabushiki-Kaisha Integral bearing type electric motor
US5532533A (en) * 1993-04-02 1996-07-02 Mitsubishi Denki Kabushiki Kaisha Servo motor integral with control apparatus
US5788467A (en) * 1996-06-10 1998-08-04 Fujitsu Limited Fan unit structure for an electronic device adapted to be inserted and mounted in a cabinet
US6281616B1 (en) * 1997-07-24 2001-08-28 Papst-Motoren Gmbh & Co. Kg Claw pole motor
US6013966A (en) * 1997-10-11 2000-01-11 Papst-Motoren Gmbh & Co. Kg Mini-fan unit especially for use as a fun printed circuit boards
US6509704B1 (en) * 1998-01-23 2003-01-21 Comair Rotron, Inc. Low profile motor
US6132170A (en) * 1998-12-14 2000-10-17 Sunonwealth Electric Machine Industry Co., Ltd. Miniature heat dissipating fans with minimized thickness

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070010187A1 (en) * 2002-12-19 2007-01-11 Frank Hondmann Ventilator housing
US20090232677A1 (en) * 2005-02-24 2009-09-17 Ebm-Papst St. Georgen Gmbh & Co. Kg Method of producing a mini fan and a mini fan produced according to said method
US20070134109A1 (en) * 2005-02-24 2007-06-14 Rodica Peia Mini-fan
US8727746B2 (en) * 2005-02-24 2014-05-20 Ebm-Papst St. Georgen Gmbh & Co. Kg Method of producing a mini fan and a mini fan produced according to said method
WO2007054676A1 (en) * 2005-11-08 2007-05-18 Denis Ferranti Meters Limited Brushless electric motors
US20080074009A1 (en) * 2006-09-25 2008-03-27 Yuji Enomoto Fan system, electric motor, and claw-pole motor
WO2008123909A2 (en) * 2007-03-05 2008-10-16 Xcelaero Corporation Fan with strut-mounted electronic components
WO2008123909A3 (en) * 2007-03-05 2008-12-11 Xcelaero Corp Fan with strut-mounted electronic components
US8282348B2 (en) 2007-03-05 2012-10-09 Xcelaero Corporation Fan with strut-mounted electrical components
US20080219841A1 (en) * 2007-03-05 2008-09-11 Xcelaero Corporation Fan with strut-mounted electrical components
US20090010787A1 (en) * 2007-07-05 2009-01-08 Koito Manufacturing Co., Ltd. Motor pump for headlamp cleaner
US8262374B2 (en) * 2007-07-05 2012-09-11 Koito Manufacturing Co., Ltd. Motor pump for headlamp cleaner
US8303274B2 (en) * 2007-12-17 2012-11-06 Ebm-Papst St. Georgen Gmbh & Co, Kg Miniature fan
US20090155097A1 (en) * 2007-12-17 2009-06-18 Wolfgang Arno Winkler Miniature fan
US8371830B2 (en) * 2008-04-21 2013-02-12 Ebm-Papst St. Georgen Gmbh & Co. Kg Fan arrangement
US20090263242A1 (en) * 2008-04-21 2009-10-22 Wolfgang Arno Winkler Fan arrangement
US8014149B2 (en) * 2008-11-27 2011-09-06 Compal Electronics, Inc. Fan module for electronic device
US20100128435A1 (en) * 2008-11-27 2010-05-27 Compal Electronics, Inc. Fan module for electronic device
US20100316508A1 (en) * 2009-06-15 2010-12-16 Alex Horng Heat-Dissipating Fan
US8696332B2 (en) * 2009-06-15 2014-04-15 Sunonwealth Electric Machine Industry Co., Ltd Heat-dissipating fan
US20100316514A1 (en) * 2009-06-15 2010-12-16 Alex Horng Heat-Dissipating Fan
US8419385B2 (en) * 2009-06-15 2013-04-16 Sunonwealth Electric Machine Industry Co., Ltd. Heat-dissipating fan
WO2011138626A1 (en) * 2010-05-03 2011-11-10 Haiku Design SDN. BHD. A ceiling fan
US8684709B2 (en) * 2010-05-28 2014-04-01 Industrial Technology Research Institute Micro cooling fan
US20110290456A1 (en) * 2010-05-28 2011-12-01 Industrial Technology Research Institute Micro cooling fan
US8608463B2 (en) 2010-05-28 2013-12-17 Industrial Technology Research Institute Micro cooling fan
CN102287384A (en) * 2010-06-17 2011-12-21 财团法人工业技术研究院 Miniature fan
US20120013209A1 (en) * 2010-07-19 2012-01-19 Maxon Motor Ag Small electric motor and method for producing a small electric motor
US8648508B2 (en) * 2010-07-19 2014-02-11 Maxon Motor Ag Small electric motor and method for producing a small electric motor
US20120163973A1 (en) * 2010-12-22 2012-06-28 Delta Electronics, Inc Fan device
CN102536858A (en) * 2010-12-22 2012-07-04 台达电子工业股份有限公司 Fan
US9103347B2 (en) * 2010-12-22 2015-08-11 Delta Electronics, Inc. Fan device
CN103609005A (en) * 2011-05-22 2014-02-26 约翰·林德 Motor assembly comprising a brushless DC motor with electronic control elements
WO2012161643A1 (en) * 2011-05-22 2012-11-29 Johan Linder Motor assembly comprising a brushless dc motor with control electronics
US20140203746A1 (en) * 2011-05-22 2014-07-24 Johan Linder Motor assembly comprising a brushless dc motor with control electronics
JP2014519305A (en) * 2011-05-22 2014-08-07 リンダー、ヨハンLINDER, Johan Motor assembly having a brushless dc motor having an electronic control device
US9410550B2 (en) 2011-12-07 2016-08-09 Delta Electronics, Inc. Air-extracting type heat dissipating apparatus
CN103153022A (en) * 2011-12-07 2013-06-12 台达电子工业股份有限公司 Air exhaust type cooling device
US10036396B2 (en) 2013-03-08 2018-07-31 Coriant Operations, Inc. Field configurable fan operational profiles
US20140341760A1 (en) * 2013-05-14 2014-11-20 Asia Vital Components (China) Co., Ltd. Fan structure with externally connected circuit
US20150104311A1 (en) * 2013-10-10 2015-04-16 Gentherm Automotive Systems (China) Ltd. Externally programmable fan
US9982681B2 (en) * 2013-10-10 2018-05-29 Gentherm Automotive Systems (China) Ltd. Externally programmable fan
US9152178B2 (en) * 2013-11-06 2015-10-06 Symbol Technologies, Llc Environmental controls for mobile electronic devices
US20150124390A1 (en) * 2013-11-06 2015-05-07 Symbol Technologies, Inc. Environmental controls for mobile electronic devices
US20150152873A1 (en) * 2013-12-02 2015-06-04 Cooler Master (Kunshan) Co., Ltd. Fan structure
USD812006S1 (en) 2015-10-09 2018-03-06 Delta T Corporation Fan motor

Also Published As

Publication number Publication date Type
EP1464106A1 (en) 2004-10-06 application
DE20219409U1 (en) 2003-03-27 grant
WO2003058796A1 (en) 2003-07-17 application

Similar Documents

Publication Publication Date Title
US7042121B2 (en) Cooling fan with electric motor
US6141217A (en) Enclosed control device
US4626727A (en) Flat, permanent magnet electric motor
US5616974A (en) Fan motor
US20020093259A1 (en) Brushless motor
US5637945A (en) Brushless motor
US4891537A (en) 1-Phase energized disk-type brushless motor
US5893705A (en) Integrated motor and blower apparatus having two back-to-back coupled rotors
US20070273221A1 (en) Brushless motor
US20030173924A1 (en) Brushless D.C. motor
US4883982A (en) Electronically commutated motor, blower integral therewith, and stationary and rotatable assemblies therefor
US6462443B2 (en) Brushless D.C. motors structure
US20080042499A1 (en) Molded motor
US20120039729A1 (en) Motor and Cooling Fan utilizing the same
US6368081B1 (en) Blower
US4885488A (en) Miniaturized fan for printed circuit boards
US6895176B2 (en) Method and apparatus for controlling electronically commutated motor operating characteristics
US6013966A (en) Mini-fan unit especially for use as a fun printed circuit boards
US20100254826A1 (en) Radial Blower
US5028216A (en) Miniaturized direct current fan
US6773239B2 (en) Fan with improved self-cooling capability
US6608411B2 (en) Direct current brushless motor
US20080193275A1 (en) Electric Machine
US5925948A (en) Axial flow fan motor
JP2005102370A (en) Self-cooling motor

Legal Events

Date Code Title Description
AS Assignment

Owner name: EBM-PAPST ST. GEORGEN GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WINKLER, WOLFGANG ARNO;REEL/FRAME:015022/0760

Effective date: 20040630