WO2000074213A1 - Moteur de ventilateur equipe d'un dissipateur thermique et petit moteur plat - Google Patents
Moteur de ventilateur equipe d'un dissipateur thermique et petit moteur plat Download PDFInfo
- Publication number
- WO2000074213A1 WO2000074213A1 PCT/JP2000/003369 JP0003369W WO0074213A1 WO 2000074213 A1 WO2000074213 A1 WO 2000074213A1 JP 0003369 W JP0003369 W JP 0003369W WO 0074213 A1 WO0074213 A1 WO 0074213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fan motor
- heat sink
- rotor
- bearing
- heat
- Prior art date
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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially 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
Definitions
- the present invention relates to an improvement of a fan motor with a heat sink, which is provided in various devices requiring heat radiation such as IC, and a small flat motor suitable for constituting the fan motor and the like.
- a fan motor with a heat sink has a base plate 1 that is applied to and fixed to various devices that require heat radiation.
- the motor 2 is equipped, and the heat radiation blocks 3 a, 3 b... are raised from the inner surface of the base plate 1, and the heat radiation blocks 3 a, 3 b... It is provided so as to be arranged in a concentric curb shape, one side is opened as a wind discharge port, and it is covered with a lid plate 4 that is fixed to the peripheral side wall of the base plate 1, and a heat radiation block 3 is generated by the wind generated by the fan motor 1.
- a configuration in which a, 3b ... is forcibly cooled is known.
- the side face of the housing facing the outer periphery of the impeller is provided with a radiation fin.
- the thickness of the side surface is made thicker, and the upstream end extends radially in the tangential direction to the circle of the mouth, and a radial groove having a depth corresponding to the thickness of the side surface is provided radially.
- wind generated from a fan motor is caused to flow in the concave groove to forcibly cool a side portion serving as a heat releasing fin.
- the upstream end extends tangentially to the circle of the rotor and radially forms a concave groove having a depth corresponding to the thickness of the side surface, so that it is structured as a radiation fin facing the outer periphery of the impeller. It is not desirable because it is complicated and heavy, and is expensive in terms of manufacturing.
- An object of the present invention is to provide a fan motor with a heat sink, which is excellent in heat dissipation or air cooling even in a small flat type, and can be easily assembled into a thin structure as a whole and easily constructed at a low cost. With the goal.
- an object of the present invention is to provide a small flat motor that can be configured to have a low noise and a stable rotation speed by using an inexpensive hydrodynamic fluid bearing. Disclosure of the invention
- the fan motor with a heat sink is provided with a base plate for fixing to various devices requiring heat radiation, and a fan motor including a rotor and a stator is provided substantially at the center of the base plate surface.
- the heat sink is installed around the fan motor.
- An opening for accommodating one unit rotatably is provided at the center of the plate surface, and a heat sink that conducts heat from the base plate by assembling a plurality of thin plate-shaped heat sinks parallel to each other with a predetermined gap is maintained. It is configured.
- a plurality of heat sinks provided with openings for rotatably accommodating the fan motor are stacked, and an opening having a smaller diameter than the diameter of the fan motor is provided. It is constructed by assembling a heat sink with a heat sink superimposed on the outermost part.
- the fan motor with a heat sink is constructed by assembling a heat sink from a plurality of heat radiating plates having respective plate surfaces connected and fixed by a heat transfer member near a corner while maintaining a predetermined gap.
- a fan motor with a heat sink according to the present invention includes a base plate formed of an aluminum plate or a copper plate, and a heat sink assembled from a heat sink formed of an aluminum plate or a copper plate. .
- the fan motor has a gently arcuate shape in each of the planes, and a plurality of radially protrude from the outer peripheral portion of the rotor, with each end standing inside the opening of the heat sink. It is configured by including a fan motor having a vertical impeller with a substantially L-shape on the raised side.
- the fan motor has a flat, multi-branched blade shape, and a plurality of the protrusions project from the outer peripheral portion in parallel with the outer periphery at a predetermined interval in the axial direction of the rotor. It is configured by including a fan motor having a flat impeller located in the gap.
- the thin plate-shaped heat radiating plate formed by stacking a plurality of the heat sinks in parallel with each other has a circular opening centered on the rotation axis of the fan motor.
- a stator having a core-wound coil, a rotor having a magnet, and a bearing supporting the rotor to be rotatable.
- a bearing house for fixing and supporting the stator, and for fixing the bearing of the rotor in the radial direction, and a base plate for standing and fixing the bearing house at approximately the center of the plate surface.
- a dynamic pressure fluid bearing including a resin-molded dynamic pressure sleeve provided with an overhang flange on the outer surface and a retaining ring fitted on the outer periphery of the dynamic pressure sleeve and pressing the overhang flange is used as a rotor bearing.
- the dynamic pressure fluid bearing is inserted into the diameter of the bearing house that rises approximately at the center of the base plate, and the retaining ring that presses the flange of the dynamic pressure sleeve is fitted and fixed within the diameter of the bearing house.
- the rotor is rotatably supported by a hydrodynamic fluid bearing having a resin dynamic pressure sleeve.
- At least one hydrodynamic bore provided as an oil sump is provided in a longitudinal direction parallel to the axial direction from one end face of the hydrodynamic sleeve.
- the rotor is rotatably supported by a fluid bearing.
- a hydrodynamic fluid bearing provided with a plurality of counterboring holes used as oil sumps at predetermined intervals on a concentric circle in the circumferential direction of the hydrodynamic sleeve is provided.
- the rotor is rotatably supported by a bearing.
- FIG. 1 is a side sectional view showing a fan motor with a heat sink according to the present invention.
- FIG. 2 is a plan view showing an example of an impeller assembled to the fan motor.
- FIG. 3 is a perspective view showing the impeller of FIG.
- FIG. 4 is a perspective view showing the fan motor with a heat sink of FIG. 1 with an outermost heat sink removed.
- FIG. 5 is a plan view showing another example of an impeller constituting a fan motor with a heat sink according to the present invention.
- FIG. 6 is a side cross-sectional view showing a fan motor with a heat sink that includes the impeller of FIG.
- FIG. 7 is a partial cross-sectional view showing an example of a dynamic pressure fluid bearing constituting the small flat motor according to the present invention.
- FIG. 8 is a plan view showing the hydrodynamic bearing of FIG.
- FIG. 9 is a partial cross-sectional view showing another example of the hydrodynamic bearing constituting the small flat motor according to the present invention.
- FIG. 10 is a bottom view showing the hydrodynamic bearing of FIG.
- FIG. 11 is a perspective view showing a fan motor with a heat sink according to a conventional example.
- FIGS. 1 to 4 show a fan motor with a heat sink constituted by a fan motor having a vertical impeller
- FIGS. The figure shows a fan motor with a heat sink that consists of a fan motor with a flat impeller. Except for the impeller which constitutes each fan motor with a heat sink, other components are basically common, and the components common to each other are denoted by the same reference numerals.
- the fan motor with a heat sink is composed of a small flat motor.
- This small flat motor is equipped with a dynamic pressure bearing having a unique structure as shown in Figs. 7 to 10 so that it can be used as a small flat motor to constitute another drive motor without a heat sink. Can also be applied.
- a fan motor with a heat sink is provided for various devices that require heat radiation such as ICs, and as shown in Fig. 1, is configured on a base plate 10 that is applied and fixed to various devices that require heat radiation.
- the base plate 10 functions as a heat absorbing plate, and is formed using a plate material having good heat conductivity, such as an aluminum plate or a copper plate.
- the base plate 10 serves as a base for the fan motor and a heat absorbing plate to enhance the heat absorbing effect. It is good to form with a thick thing.
- a fan motor M composed of a rotor 11 and a stator 12 is provided substantially at the center of the base plate 10 and a heat sink H is arranged around the fan motor M to provide a fan motor with a heat sink. It is configured.
- the fan motor M is provided with a bearing house 13 that stands up and fixed substantially at the center of the plate surface of the base plate 10, and the dynamic pressure fluid bearing 14 that is configured with the bearing house 13 as a base frame
- the rotor 11 is rotatably supported by a bearing
- the stator 12 is fixedly supported by a bearing house 13.
- the rotor 11 has a ring-shaped magnet 11a.
- the magnet 11a is held by a magnet yoke 11b, and the rotor 11 is applied to the inner peripheral surface of a flat disk-shaped mouthpiece 11c. It is configured by fixing.
- the rotor 11 has a rotating shaft 15 fitted and fixed to a central boss 11 d of a rotor cap 11 c, and the rotating shaft 15 is rotatably inserted and supported by a hydrodynamic bearing 14. As a result, a bearing house 13 is mounted on the surface of the base plate 10.
- the stator 12 is formed by winding a coil 12a around a core 12b, and the terminal of the coil 12a is connected to circuit components such as a motor rotation control element provided on a circuit board 12c. It consists of.
- the stator 12 has a core 12b, on which a coil 12a is wound, fitted and fixed to the upper end side of the bearing house 13, and a circuit board 12c is mounted on the middle part of the bearing house 13. It is assembled using the bearing house 13 as a support base by fixing it.
- the fan motor M is configured by providing a plurality of impellers 16a, 16b,... On the outer periphery of the rotor cap 11c. As shown in FIGS. 2 and 3, the impellers 16a, 16b... Have a gentle arc shape in each of the planes, and the impellers 16a, 16b. It is equipped with a vertical one that protrudes radially and has a substantially L-shaped side surface with each tip standing up. This fan motor M is an impeller 16 The rotation direction X is set so that the inner surface of the arc of a, 16 b ... faces forward.
- the whole including the central ring portion 16c is die-cast from aluminum or the like having excellent heat dissipation.
- the impellers 16a, 16b ... are formed separately from the rotor cap 11c and are fitted and fixed to the outer periphery of the rotor cap 11c at the center ring 16c. It is attached by.
- the heat sink H is mounted outside the fan motor M while maintaining a center for rotatably accommodating the fan motor M including impellers 16a, 16b...
- the heat sink H is composed of a plurality of heat radiating plates 17 having an opening 17a for rotatably receiving the fan motor M at the center of the plate surface.
- the heat radiating plates 17 are thin plates made of aluminum or copper plates with good thermal conductivity and cut into a square shape.
- the heat sinks H are assembled as a heat sink H by stacking a plurality of plates in parallel with a predetermined gap. ing.
- Each of the heat radiating plates 17 uses spacers 17 b and rivets 17 c formed of a material having good heat conductivity such as aluminum, and the spacers 17 b are connected to the base plates 10 and 10.
- the heat sinks 17 are sandwiched between the corners near each corner to maintain a predetermined gap, and the rivet 17c is inserted through each plate surface and the spacer 17b to make the base plate 10
- the heat radiating plates 17 are connected and fixed to each other so as to conduct heat from the base plate 10.
- the heat sink H is installed outside the fan motor M while maintaining the center for accommodating the fan motor M in a rotatable manner at the center. Both can be configured to be flat and thin only by the thickness of the base plate 10 and the height of the fan motor M.
- the heat sink H has an opening 17a at the center of the plate surface for rotatably accommodating the fan motor M.
- the heat sink H is a thin plate-shaped heat sink formed by cutting a rectangular shape from an aluminum plate or a copper plate. 1 7... stack several in parallel It is structurally simple and easy to assemble.
- the spacer 17b is sandwiched between the base plate 10 and each heat radiating plate 17 near each corner to maintain a predetermined gap, and the rivet 17c is fixed to each plate surface and each spacer. Since the base plate 10 and the heat radiating plates 17... Are connected and fixed by being inserted into the circuit board 17 b, heat can be transferred more quickly than the base plate 10.
- the impellers 16a, 16b ... of the fan motor M are provided with vertical L-shaped sides with their front ends raised, a large amount of airflow can be achieved.
- the heat radiation plates 17 ... can be efficiently cooled by air.
- the heat sink H has a plurality of heat sinks 17 provided with openings 17a for rotatably accommodating the fan motor M as described above. It is preferable to assemble the heat radiating plate 18 provided with the small-diameter opening 18 a so as to overlap the outermost portion. As a result, the opening 17a of the radiator plate 17 is used as an air intake hole, and the wind generated by the fan motor M is prevented from escaping. 1 7 ⁇ ⁇ ⁇ , can dissipate heat more efficiently than 18.
- the fan motor M is composed of a plurality of impellers 160 having a multi-branched wing shape as shown in FIG. 5 instead of the above-described vertical type impellers 16a, 16b. May be provided.
- the impellers 16 0... Start from the center ring 16 1, and project from the main trunks 16 2 and the main trunks 16 2 that are adjacent to the ring 16 1.
- a plurality of wings 1660a to 16-0d composed of branches 163, 164 ... are formed into a flat type by punching and molding them together.
- the impeller 160 holds the center ring portion 161 between spacers 16a to 16c and fixes it.
- each emperor 160... Is provided so that the tip side of the wings 160 a to 160 d is positioned in the gap between the base plate 10 and the heat sinks 15. ing.
- the impellers 160 can be easily formed by punching a thin flat plate, and by forming them into a multi-branched wing shape, a sufficient amount of air can be generated at each branch.
- the impellers 160 since the impellers 160 ... can locate the tip side of the wings 160a to 160d in the gaps of the base plate 10 and the heat sinks 15 ... 18, The wind generated on the tip side located in each gap between the base plate 10 and the heat radiating plates 15, 18 can efficiently act on the base plate 10 and the heat radiating plates 15.
- the multi-branched wing shape is not limited to the illustrated form, and can be changed to an appropriate multi-branched shape.
- the plurality of heat sinks 17 of the heat sink H are provided with circular openings 17a around the rotation axis of the fan motor, and there is no edge portion for blocking wind generated from the fan motor.
- it can be configured as a low noise fan motor by preventing the generation of wind noise generated from the edge.
- the rotor 11 may be rotatably supported by a hydrodynamic bearing 14 mounted on the bearing house 13 as shown in FIG.
- This hydrodynamic fluid bearing 14 is provided with spiral grooves 1 4 1 a and 1 4 1 b that are turned upside down and extend between the side surface of the rotating shaft 15 and the inner surface of the dynamic pressure sleeve 140 to circulate the oil flow.
- the dynamic pressure fluid bearing 14 includes a resin-formed dynamic pressure sleeve 140 provided with an overhang flange 142 on the outer surface thereof, and an overhang flange 1 fitted on the outer periphery of the dynamic pressure sleeve 140. 4 2 with a retaining ring 1 4 3 Insert the bearing house 13 into the diameter of the bearing house 13 that rises at the approximate center of the base plate 10 and the retaining ring 1 4 3 that presses the overhang flange 1 4 2 of the dynamic pressure sleeve 140. It is configured by fitting and fixing within the diameter of 13.
- the dynamic pressure fluid bearing 14 is provided with a resin dynamic pressure sleeve 140 and can be configured to be inexpensive. Also, by pressing the overhang flange 14 2 of the dynamic pressure sleeve 140 into the diameter of the bearing house 13 with a retaining ring 14 Since it is fixed in place, no pressure is applied in the radial direction of the dynamic pressure sleeve 140, and it does not affect the inner diameter accuracy of the bearing. This also makes it possible to construct a drive motor with low noise and stable rotation speed.
- the hydrodynamic bearing 14 is provided with arc-shaped slide drives 144 a to 144 d at predetermined intervals in the longitudinal direction of the outer periphery of the overhang flange 142.
- the dynamic pressure sleeve 140 can be easily inserted and fixed within the diameter of the bearing house 13.
- concave grooves 1450a and 1450b are provided, and projections (not shown) that fit into the concave grooves 1450a and 1450b are snapped.
- the retaining ring 14 3 is prevented from rotating by being provided on the 14 3 and fitted together, so that the retaining ring 14 3 can be securely fitted and fixed within the diameter of the bearing house 13.
- the entire rotor is attracted in the mounting direction of the stator 12 by the magnetic action of the coil 12 a of the stator 12 and the magnet 11 a of the rotor 11. It is preferable that the rotor 11 is supported so as to be rotatably and stably supported. At the same time, as shown in FIGS. 1 and 5, a thruster 19 which is in contact with the rotating shaft 15 of the rotor 11 at the shaft end face is provided at the bottom of the bearing house 13 to smoothly rotate the rotor 11. It should be assembled movably.
- At least one counterbore hole 146 used as an oil reservoir is formed in at least one longitudinal direction parallel to the axial direction from one end face of the dynamic pressure sleeve 140. It is good to provide one.
- This counterbore 1 4 6 When the oil reservoir is provided, the oil loss due to the continuous change due to the heat of the bearing generated at the time of operation at about 80 ° C can be eliminated, and the life of the bearing can be extended.
- a plurality of counterbore holes for the oil sump are provided at predetermined intervals on a concentric circle in the circumferential direction of the dynamic pressure sleeve 140 as shown in Fig. 10. Oil loss due to successive changes due to heat generation can be more effectively eliminated.
- One counterbore 1 4 6 or counterbore 1 4 6, 1 4 6 d is provided with concave grooves 1 4 7 a, 1 4
- the rotating shaft 15 is brought into contact with the thruster 19 at the shaft end face, and can be smoothly rotatably assembled.
- the opening for accommodating the fan motor in a rotatable manner is provided at the center of the plate surface, and a plurality of the motors are stacked in parallel with a predetermined gap kept therebetween.
- a plurality of heatsinks provided with openings for rotatably accommodating the fan motor are stacked, and an opening having a smaller diameter than the diameter of the fan motor is provided.
- the predetermined gap is By assembling the heat sink from a plurality of heat-dissipating plates with the respective plate surfaces connected and fixed by a heat transfer member near the corners while maintaining the heat sink, the heat sink can be assembled to be able to conduct heat more quickly than the base plate.
- the fan motor has a gentle arc shape in the same direction on each plane, and a plurality of radially protrude from the outer periphery of the rotor.
- the fan motor with a heat sink which concerns on this invention, while exhibiting a flat multi-branched blade
- the plurality of heat sinks 17 of the heat sink H are provided with circular openings 17 a around the rotation axis of the fan motor. Since there is no edge portion that blocks the wind generated by the fan, it can be configured as a low-noise fan motor that does not generate wind noise.
- a dynamic pressure sleeve formed by resin-molding by providing an overhang flange on the outer surface as a rotor bearing, and a retaining ring fitted to the outer periphery of the dynamic pressure sleeve and pressing the overhang flange are provided.
- a hydrodynamic bearing having a dynamic pressure fluid bearing which is located within the diameter of a bearing house that rises substantially at the center of the base plate surface, and a stopper that presses the overhang flange of the dynamic pressure sleeve
- a dynamic pressure sleeve made of resin By inserting and fixing the ferrule within the diameter of the bearing house, it is possible to provide an inexpensive structure with a dynamic pressure sleeve made of resin, and there is no pressure applied in the radial direction of the dynamic pressure sleeve. Even if a resin-made dynamic pressure sleeve is provided, a drive motor having a stable inner diameter accuracy of the bearing can be formed.
- a hydrodynamic fluid bearing in which at least one counterbore used as an oil reservoir is provided in a longitudinal direction parallel to the axial direction from one end surface of the hydrodynamic sleeve.
- a hydrodynamic fluid bearing in which a plurality of counterboring holes used as oil reservoirs are provided at predetermined intervals on a concentric circle in the circumferential direction of the hydrodynamic sleeve.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002375129A CA2375129A1 (en) | 1999-05-26 | 2000-05-25 | Heat sink-equipped fan motor and small flat motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14634499A JP2000341902A (ja) | 1999-05-26 | 1999-05-26 | ヒートシンク付きファンモータ並びに小型扁平モータ |
JP11/146344 | 1999-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000074213A1 true WO2000074213A1 (fr) | 2000-12-07 |
Family
ID=15405591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/003369 WO2000074213A1 (fr) | 1999-05-26 | 2000-05-25 | Moteur de ventilateur equipe d'un dissipateur thermique et petit moteur plat |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2000341902A (ja) |
CN (1) | CN1354903A (ja) |
CA (1) | CA2375129A1 (ja) |
WO (1) | WO2000074213A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9039361B2 (en) | 2010-11-26 | 2015-05-26 | Minebea Co., Ltd. | Centrifugal fan |
Families Citing this family (16)
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JP3503822B2 (ja) | 2001-01-16 | 2004-03-08 | ミネベア株式会社 | 軸流ファンモータおよび冷却装置 |
JP4458800B2 (ja) | 2003-09-17 | 2010-04-28 | 日本電産株式会社 | ファン及びこれを備えた情報機器 |
IE20060839A1 (en) | 2005-11-17 | 2007-07-11 | Univ Limerick | A cooling device |
DE102006015064B4 (de) * | 2006-03-31 | 2008-05-29 | Siemens Ag | Elektrische Maschine |
FR2920491B1 (fr) * | 2007-09-03 | 2013-07-19 | Siemens Vdo Automotive | Groupe moto-ventilateur avec carte electronique de commande refroidie par air pulse |
US8228675B2 (en) * | 2007-12-18 | 2012-07-24 | Sandia Corporation | Heat exchanger device and method for heat removal or transfer |
US8988881B2 (en) | 2007-12-18 | 2015-03-24 | Sandia Corporation | Heat exchanger device and method for heat removal or transfer |
JP5267343B2 (ja) * | 2008-06-14 | 2013-08-21 | 日本電産株式会社 | インペラおよび遠心ファン |
US20120125572A1 (en) * | 2009-05-28 | 2012-05-24 | University Of Limerick | Cooling device |
DE102009050369A1 (de) * | 2009-10-22 | 2011-04-28 | Magna Electronics Europe Gmbh & Co.Kg | Axiallüfter |
US9795961B1 (en) | 2010-07-08 | 2017-10-24 | National Technology & Engineering Solutions Of Sandia, Llc | Devices, systems, and methods for detecting nucleic acids using sedimentation |
US8945914B1 (en) | 2010-07-08 | 2015-02-03 | Sandia Corporation | Devices, systems, and methods for conducting sandwich assays using sedimentation |
US8962346B2 (en) | 2010-07-08 | 2015-02-24 | Sandia Corporation | Devices, systems, and methods for conducting assays with improved sensitivity using sedimentation |
US9244065B1 (en) | 2012-03-16 | 2016-01-26 | Sandia Corporation | Systems, devices, and methods for agglutination assays using sedimentation |
CN103997160A (zh) * | 2013-02-15 | 2014-08-20 | 三星电机日本高科技株式会社 | 风扇电机 |
JP6294910B2 (ja) * | 2016-05-18 | 2018-03-14 | ミネベアミツミ株式会社 | 遠心式ファン |
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JPS6455321U (ja) * | 1987-09-30 | 1989-04-05 | ||
JPH0652648U (ja) * | 1992-12-25 | 1994-07-19 | 富士紡績株式会社 | 防汚染敷物 |
JPH06339244A (ja) * | 1993-05-27 | 1994-12-06 | Nippon Densan Corp | フアンモータケーシング |
JPH0794644A (ja) * | 1993-06-29 | 1995-04-07 | Nisshin Seiki Kk | ヒートシンク |
JPH0937516A (ja) * | 1995-07-20 | 1997-02-07 | Matsushita Electric Ind Co Ltd | 冷却用ファンモータ |
JPH09149598A (ja) * | 1995-11-20 | 1997-06-06 | Seiko Epson Corp | 冷却ファンおよび冷却ファン組立体 |
JPH10200020A (ja) * | 1997-01-13 | 1998-07-31 | Mitsui High Tec Inc | 冷却ファン付きicパッケージ |
JPH1131770A (ja) * | 1997-07-14 | 1999-02-02 | Mitsubishi Electric Corp | 発熱体冷却装置 |
JPH1155897A (ja) * | 1997-07-28 | 1999-02-26 | Tokyo Parts Ind Co Ltd | 動圧軸受型モータ |
-
1999
- 1999-05-26 JP JP14634499A patent/JP2000341902A/ja not_active Withdrawn
-
2000
- 2000-05-25 CA CA002375129A patent/CA2375129A1/en not_active Abandoned
- 2000-05-25 CN CN 00808026 patent/CN1354903A/zh active Pending
- 2000-05-25 WO PCT/JP2000/003369 patent/WO2000074213A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6455321U (ja) * | 1987-09-30 | 1989-04-05 | ||
JPH0652648U (ja) * | 1992-12-25 | 1994-07-19 | 富士紡績株式会社 | 防汚染敷物 |
JPH06339244A (ja) * | 1993-05-27 | 1994-12-06 | Nippon Densan Corp | フアンモータケーシング |
JPH0794644A (ja) * | 1993-06-29 | 1995-04-07 | Nisshin Seiki Kk | ヒートシンク |
JPH0937516A (ja) * | 1995-07-20 | 1997-02-07 | Matsushita Electric Ind Co Ltd | 冷却用ファンモータ |
JPH09149598A (ja) * | 1995-11-20 | 1997-06-06 | Seiko Epson Corp | 冷却ファンおよび冷却ファン組立体 |
JPH10200020A (ja) * | 1997-01-13 | 1998-07-31 | Mitsui High Tec Inc | 冷却ファン付きicパッケージ |
JPH1131770A (ja) * | 1997-07-14 | 1999-02-02 | Mitsubishi Electric Corp | 発熱体冷却装置 |
JPH1155897A (ja) * | 1997-07-28 | 1999-02-26 | Tokyo Parts Ind Co Ltd | 動圧軸受型モータ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9039361B2 (en) | 2010-11-26 | 2015-05-26 | Minebea Co., Ltd. | Centrifugal fan |
Also Published As
Publication number | Publication date |
---|---|
CN1354903A (zh) | 2002-06-19 |
CA2375129A1 (en) | 2000-12-07 |
JP2000341902A (ja) | 2000-12-08 |
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