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CN101311548B - Radiator fan - Google Patents

Radiator fan Download PDF

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Publication number
CN101311548B
CN101311548B CN200710074601.7A CN200710074601A CN101311548B CN 101311548 B CN101311548 B CN 101311548B CN 200710074601 A CN200710074601 A CN 200710074601A CN 101311548 B CN101311548 B CN 101311548B
Authority
CN
China
Prior art keywords
oil
bearing
wheel hub
rotating shaft
axle bed
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.)
Expired - Fee Related
Application number
CN200710074601.7A
Other languages
Chinese (zh)
Other versions
CN101311548A (en
Inventor
林雨利
黄英敏
杨之亚
彭志坚
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.)
Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
Original Assignee
Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen 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
Application filed by Hong Jun Precision Industry Co ltd, Fuzhun Precision Industry Shenzhen Co Ltd filed Critical Hong Jun Precision Industry Co ltd
Priority to CN200710074601.7A priority Critical patent/CN101311548B/en
Priority to US11/769,663 priority patent/US20080292479A1/en
Publication of CN101311548A publication Critical patent/CN101311548A/en
Application granted granted Critical
Publication of CN101311548B publication Critical patent/CN101311548B/en
Expired - Fee Related 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
    • 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
    • F04D25/0626—Details of the lubrication
    • 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

A heat dissipation fan comprises a fan frame, a rotor component, a stator component, a ball bearing and an oil-retaining bearing. The rotor component comprises a hub and a rotating axle; two axle seats are respectively formed at the center of the bottom end and the center of the top end of the fan frame; the ball bearing is arranged in the axle seat on the top of the fan frame and the oil-retaining bearing is arranged in the axle seat at the bottom end of the fan frame; the hub is arranged between the two bearings; a rotating axle is penetrated into the hub and the two ends thereof are respectively penetrated into the axle holes of the two bearings. The heat dissipation fan is provided with the ball bearing and the oil-retaining bearing that are separately arranged in the two axle seats, thus leading the two bearings to be mutually spaced and not mutually affected, avoiding the lubricant in the oil-retaining bearing from entering the ball bearing, leading the ball bearing to run normally and reducing noises and leading both the service life of the two bearings to be relatively longer and the reliability to be higher, thereby prolonging the service life of the heat dissipation fan.

Description

Radiation fan
Technical field
The present invention relates to a kind of radiation fan, refer to a kind of lift shaft bearing structure radiation fan in working life that has especially.
Background technique
Along with the motion speed of heat-generating electronic elements such as central processing unit (CPU) is more and more faster, the heat of its generation is also more and more many.For guaranteeing the normal operation of these electronic components, must dispel the heat fast and effectively to it.Usually; Industry is installed auxiliary its heat radiation of radiator on heat-generating electronic elements such as central processing unit (CPU), simultaneously, radiation fan is installed on radiator; Providing forced draft to impel the heat of radiator to distribute fast, thereby heat-generating electronic elements such as central processing unit (CPU) are carried out more efficiently heat radiation.At present, radiation fan is being brought into play important effect in the electronic element radiating field.The great heat radiation effect of radiation fan makes heater element have long working life, and the bearing structure that is provided with in the radiation fan is to producing material impact in working life of radiation fan.
Existing radiation fan is used more bearing structure and is mainly contained three kinds, and promptly two ball bearing structures, single oil-impregnated bearing structure and a ball bearing add the composite structure of an oil-impregnated bearing.Though adopt the radiation fan long service life of two ball bearing structures, its cost is high, and noise is also bigger; Though adopt the radiation fan cost of single oil-impregnated bearing structure lower, its life-span is shorter again.
Adopt a ball bearing to add the composite structure radiation fan of an oil-impregnated bearing structure; Its cost of material between the front between the two; But still be subject to the life-span of oil-impregnated bearing its working life; Lubricant oil in oil-impregnated bearing uses consumption (leaking and volatilization) intact, and the life-span of its bearing structure promptly can terminate, and this radiation fan life-span also will terminate.Particularly well the district is separated because the position that ball bearing and oil-impregnated bearing are laid is not done; The lubricant oil of oil-impregnated bearing end can flow in the ball bearing; Because ball bearing adopts grease lubrication,, can make ball bearing produce extra noise when the lubricant oil in the oil-impregnated bearing flows in the ball bearing; Influence the normal operation of ball bearing, and quicken the ball bearing inefficacy.
In addition, existing oil-impregnated bearing normally adopts Open architecture, causes the acceleration of the lubricant oil of oil-impregnated bearing to run off, thereby makes that the radiation fan life-span of this oil-impregnated bearing structure of employing is on the low side.
Moreover the rotating shaft in the traditional heat-dissipating fan is at axial no position structure, and in the radiation fan operation process, the rotating shaft meeting is play vertically, makes radiation fan running unstability and reliability undesirable.
Therefore, how to optimize the working life and the usability that have bearing structure now and improve radiation fan and become one of emphasis of radiation fan area research.
Summary of the invention
In view of this, be necessary to provide a kind of when adopting the bearing structure of composite type, can prevent that the lubricant oil in the oil-impregnated bearing from flowing into the radiation fan in the ball bearing.
On the other hand, also be necessary to provide a kind of have prevent the lost efficacy radiation fan of fruit of flow of lubricant, make its bearing structure transfer the structure of relative close type to by Open architecture, run off to prevent the lubricant oil in the bearing structure.
Another aspect also is necessary to provide a kind of and can prevents the rotating shaft radiation fan of play vertically, makes rotating shaft axially realize guaranteeing radiation fan stability and reliability in the running in the location.
A kind of radiation fan; Comprise fan frame, rotor component, stator component, ball bearing and oil-impregnated bearing, rotor component comprises wheel hub and rotating shaft, and the fan frame forms two axle beds respectively at the central authorities of its bottom and the central authorities on top; Said ball bearing is located at the axle bed that the fan frame is positioned at the top; Said oil-impregnated bearing is located at the axle bed that the fan frame is positioned at the bottom, and wheel hub is between this two bearings, and rotating shaft is arranged in respectively in the axis hole of this two bearings through wheel hub and its two ends.
A kind of radiation fan; Comprise wheel hub, ball bearing and oil-impregnated bearing; The outer rim of said wheel hub is provided with some flabellums, and the central authorities of said wheel hub are provided with rotating shaft, and said ball bearing is fixed in the top of wheel hub; Said oil-impregnated bearing is fixed in the below of wheel hub, and said rotating shaft runs through wheel hub and is arranged in respectively in said ball bearing and the oil-impregnated bearing up and down.
As further improvement of the present invention, the top that said fan frame is positioned at the axle bed of bottom is provided with a flinger ring, has formed a reserve between said flinger ring, oil-impregnated bearing and this axle bed jointly.
As further improvement of the present invention, also be provided with elastic element between ball bearing and the wheel hub, said elastic element is in squeezed state.
Above-mentioned radiation fan separates ball bearing and oil-impregnated bearing and is arranged in two axle beds; Make two bearings keep apart each other and be independent of each other, avoided the lubricant oil in the oil-impregnated bearing to get in the ball bearing, ball bearing is run well and reduce noise to produce; The structure that is arranged so that formation relative closure in the oil-impregnated bearing of said flinger ring; Can effectively prevent the oil leak in the oil-impregnated bearing, make the life-span of two bearings and reliability all higher relatively, thereby prolong the working life of radiation fan.In addition, the elastic element that is provided with between ball bearing and the wheel hub can prevent rotating shaft play vertically, stability and reliability when guaranteeing the radiation fan running in the axial realization location of rotating shaft.
Description of drawings
Fig. 1 is the perspective exploded view of radiation fan.
Fig. 2 is the schematic representation of another angle of Fig. 1.
Fig. 3 is the solid combination schematic representation of Fig. 1 radiation fan.
Fig. 4 is the generalized section of Fig. 3 radiation fan along the IV-IV line.
Embodiment
With reference to the accompanying drawings, be described further in conjunction with embodiment.
Please consult Fig. 1 to Fig. 3 simultaneously, this radiation fan mainly comprises fan frame 10, stator component 45, rotor component 40 and clutch shaft bearing 20, second bearing 30.
Fan frame 10 comprises a loam cake 11 and a base 12.Wherein the mediad of loam cake 11 extends below to be convexly equipped with and forms one first axle bed 111, forms a columniform containing space (not label) of going up in this first axle bed 111, and the top of first axle bed 111 offers a through hole 112.The central authorities of base 12 extend upward to be convexly equipped with and form one second axle bed 121, this second axle bed, 121 bottoms sealing, and open-topped forms containing space (not label) in it.Please refer to Fig. 4; The inwall of second axle bed 121 is in forming an end difference 124,125 respectively near its bottom and top end; And the internal diameter of end difference 124 is less than the internal diameter of end difference 125; Thereby second containing spaces in the axle bed 121 be divided into three cylindrical spaces that diameter is different, and from the bottom of this containing space to the top, the diameter of these three cylindrical spaces increases successively.
Stator component 45 comprises armature 451 and circuit board 452, and wherein armature 451 is electrically connected to this circuit board 452, thereby obtains electric current to produce alternating magnetic field.
Rotor component 40 comprises a wheel hub 401, the radial prominent some flabellums 402 of establishing of these wheel hub 401 outer rims, the wheel hub 401 inner side edges magnet ring 41 that is sticked.One rotating shaft 50 runs through wheel hub 401 and the central authorities of being fixed in wheel hub 401, and stretch out downwards outside the wheel hub 401 bottom of rotating shaft 50, and its top extends upward on the top that exposes to wheel hub 401.Please consult Fig. 4 simultaneously, the top of rotating shaft 50 and bottom end position cave inward respectively and form an annular groove 501,502, rotating shaft 50 in its with the below outer surface of the binding site of wheel hub 401 on cave inward and form an annular oil-return groove 503.
In the present embodiment, clutch shaft bearing 20 is a ball bearing, and it is arranged in the containing space of first axle bed 111 of loam cake 11.This clutch shaft bearing 20 is by interior ring, outer ring and place the plurality of balls between the inside and outside ring to constitute, and it adopts grease lubrication.Second bearing 30 is columned oil-impregnated bearing, and is arranged in the containing space of second axle bed 121 of base 12.This second bearing 30 adopts oil lubrication, and its outer surface is provided with some oil return grooves.One flinger ring 70 is fixed on the end difference 125 of top end of second axle bed 121, and the external diameter of this flinger ring 70 and second axle bed, 121 top internal diameter sizes are basic identical, and fully seal this open-topped.Flinger ring 70 centers are provided with a perforation and wear extension for rotating shaft 50, thereby the somewhat larger in diameter of this perforation forms a less gap between the two in the external diameter of rotating shaft 50.During this radiation fan work, this less gap is unlikely to make outside oil leak to the flinger ring 70, can avoid producing between flinger ring 70 and the rotating shaft 50 friction again.
The wear plate 90 of a circle is arranged on the containing space bottom in second axle bed 121, the diameter of this wear plate 90 identical thereby just ccontaining this wear plate 90 of diameter bottom this containing space.During this fan work, wear plate 90 leans with the bottom of rotating shaft 50, can avoid the bottom direct friction of the rotating shaft 50 and second axle bed 121, thus the working life of improving second axle bed 121.One annular cramp 80 places under second bearing 30 and is positioned on the end difference 124 of second axle bed 121.Make and prevent in its annular groove that can be sheathed on rotating shaft 50 502 that rotating shaft 50 from coming off from second bearing 30 thereby a through hole is established at annular cramp 80 centers.Another annular cramp 81 is located at the top of first axle bed 111 and is sheathed in the annular groove 501 on rotating shaft 50 tops, thereby prevents that rotating shaft 50 breaks away from first axle bed 111.One spring 60 is resisted against between clutch shaft bearing 20 and the wheel hub 401.This spring 60 is a cup spring, and its top end diameter is less, is resisted against on the interior ring of clutch shaft bearing 20, and its bottom diameter is bigger, is resisted against on the top of wheel hub 401.
During this fan assembling; Stator component 45 is installed in second axle bed, 121 outer rims; Wear plate 90 places the bottom of the containing space in second axle bed 121; Annular cramp 80 places on the end difference 124 of the containing space in second axle bed 121, and second bearing 30 is contained in the containing space of second axle bed 121 and is positioned on the annular cramp 80, and flinger ring 70 is installed on the end difference 125 in second axle bed 121.After rotating shaft 50 is fixed together with rotor component 40 with the bottom of rotating shaft 50 successively through the axis hole and the annular cramp 80 of flinger ring 70, second bearing 30, make it be housed in second axle bed 121 and the bottom of rotating shaft 50 and wear plate 90 leant.The top of second bearing 30 is lower than the open top end of second axle bed 121, thereby the at interval certain distance in the top of the flinger ring 70 and second bearing 30, has formed a reserve jointly between second bearing 30, flinger ring 70 and second axle bed 121.Oil-return groove 503 in the rotating shaft 50 and is connected with reserve between the flinger ring 70 and second bearing 30.Spring 60 places on the wheel hub 401; After clutch shaft bearing 20 is contained in the containing space of first axle bed 111; The top of rotating shaft 50 is arranged in the axis hole of clutch shaft bearing 20 and the through hole 112 through first axle bed, 111 tops; Annular cramp 81 is sheathed in the annular groove 501 on rotating shaft 50 tops, and the loam cake 11 that will fan frame 10 and base 12 secure bond are together.Spring 60 tops of this moment and the interior ring of clutch shaft bearing 20 lean; The top of the bottom of spring 60 and wheel hub 401 leans; And be in compressive state; The precompression of applying for wheel hub 401 downwards through this spring 60 can force the bottom of rotating shaft 50 and wear plate 90 to lean, thus the axial float of rotating shaft 50 when reducing the radiation fan running, the run stability and the reliability performance of increase radiation fan.
During this fan work, the interaction effect in stator component 45 and rotor component 40 magnetic fields drives rotating shaft 50 rotations.Because the lubricant oil that centrifugal action splashes out along rotating shaft 50; Gather in second bearing 30, flinger ring 70 and second axle bed, the 121 common reserves that form; Oil-return groove 503 in the rotating shaft 50 can prevent to continue upwards to climb along rotating shaft 50 along the lubricant oil that upwards climbs in the rotating shaft 50; Thereby be collected in the reserve; Because the gap width that forms between flinger ring 70 and the rotating shaft 50 is enough little, the lubricant oil that accumulates in reserve prevents fully that through stopping of flinger ring 70 lubricant oil from leaking from second bearing 30, almost all is collected in the reserve; Oil return groove on second bearing, 30 outer walls of last edge is back to the bottom of second bearing 30, restarts circulation.What is more important; Clutch shaft bearing 20 separates fully with second bearing 30 and is arranged in two different first axle beds 111 and second axle bed 121; Wheel hub 401 is arranged on first, second bearing 20, between 30, and second bearing 30 adopts enclosed constructions, and the lubricant oil in second bearing 30 can't be flow in the clutch shaft bearing 20; Prevented that the lubricant oil in second bearing 30 runs off the working life of having improved second bearing 30 relatively; On the other hand, also avoided the lubricant oil in second bearing 30 to get in the clutch shaft bearing 20, influenced the normal operation of clutch shaft bearing 20 and produce extra noise; Simultaneously, the setting of spring 60 also forces the bottom of rotating shaft 50 to lean with wear plate 90 all the time, stability and reliability when having guaranteed the radiation fan running.

Claims (11)

1. radiation fan; Comprise fan frame, rotor component, stator component, ball bearing and oil-impregnated bearing, rotor component comprises wheel hub and rotating shaft, it is characterized in that: the fan frame forms two axle beds respectively at the central authorities of its bottom and the central authorities on top; Said ball bearing is located at the axle bed that the fan frame is positioned at the top; Said oil-impregnated bearing is located at the axle bed that the fan frame is positioned at the bottom, and wheel hub is between this two bearings, and rotating shaft is arranged in respectively in the axis hole of this two bearings through wheel hub and its two ends.
2. radiation fan as claimed in claim 1 is characterized in that: said fan frame comprises base and loam cake, two axle beds be formed at respectively base and on cover.
3. radiation fan as claimed in claim 2 is characterized in that: the top end of said rotating shaft is provided with a groove with a ccontaining cramp, and this cramp is used for the axle bed of rotating shaft snap fit at loam cake.
4. radiation fan as claimed in claim 2 is characterized in that: the bottom that is provided with wear plate and rotating shaft in the axle bed of said base leans.
5. radiation fan as claimed in claim 1 is characterized in that: be provided with elastic element between the top of said ball bearing and wheel hub.
6. radiation fan as claimed in claim 5 is characterized in that: said elastic element is a spring, and an end of spring is resisted against the interior ring of ball bearing, and the other end of spring is resisted against the top of wheel hub.
7. radiation fan as claimed in claim 1 is characterized in that: the top that said fan frame is positioned at the axle bed of bottom is provided with a flinger ring, has formed a reserve between said flinger ring, oil-impregnated bearing and this axle bed jointly.
8. radiation fan; Comprise wheel hub, ball bearing and oil-impregnated bearing; The outer rim of said wheel hub is provided with some flabellums, and the central authorities of said wheel hub are provided with rotating shaft, it is characterized in that: said ball bearing is fixed in the top of wheel hub; Said oil-impregnated bearing is fixed in the below of wheel hub, and said rotating shaft runs through wheel hub and is arranged in respectively in said ball bearing and the oil-impregnated bearing up and down.
9. radiation fan as claimed in claim 8 is characterized in that: also be provided with elastic element between said ball bearing and the wheel hub, said elastic element is in squeezed state.
10. radiation fan as claimed in claim 8 is characterized in that: said oil-impregnated bearing is fixed in the axle bed, and the top of said axle bed is provided with a flinger ring, has formed a reserve between said flinger ring, oil-impregnated bearing and this axle bed jointly.
11. radiation fan as claimed in claim 10 is characterized in that: caving inward on the corresponding outer surface of said rotating shaft and reserve forms the oil-return groove of an annular.
CN200710074601.7A 2007-05-25 2007-05-25 Radiator fan Expired - Fee Related CN101311548B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200710074601.7A CN101311548B (en) 2007-05-25 2007-05-25 Radiator fan
US11/769,663 US20080292479A1 (en) 2007-05-25 2007-06-27 Cooling fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200710074601.7A CN101311548B (en) 2007-05-25 2007-05-25 Radiator fan

Publications (2)

Publication Number Publication Date
CN101311548A CN101311548A (en) 2008-11-26
CN101311548B true CN101311548B (en) 2012-02-01

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CN (1) CN101311548B (en)

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CN201461555U (en) * 2009-04-24 2010-05-12 东莞动利电子有限公司 Dustproof and oil leakage-proof structure of fan
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US10576227B2 (en) * 2011-04-18 2020-03-03 Resmed Motor Technologies Inc PAP system blower
US20130039757A1 (en) * 2011-08-11 2013-02-14 Yen Sun Technology Corp. Heat dissipating fan having a porous sintered bushing for an impeller shaft and method of making the bushing
US20140099200A1 (en) * 2012-10-04 2014-04-10 Adda Corp. Fan structure
CN103835961A (en) 2012-11-23 2014-06-04 富瑞精密组件（昆山）有限公司 Cooling fan
CN103867461A (en) * 2012-12-12 2014-06-18 富瑞精密组件（昆山）有限公司 Cooling fan
US9103320B1 (en) * 2013-08-15 2015-08-11 Ryan Potts Energy recovery cooling unit
CN104074794A (en) * 2014-06-30 2014-10-01 黄星云 A fan rear-mounted shaft center buckle sealing sleeve
CN108427491B (en) * 2017-02-13 2019-12-10 全亿大科技（佛山）有限公司 Heat radiation fan and electronic device with same
US20190353177A1 (en) * 2018-05-21 2019-11-21 Asia Vital Components Co., Ltd. Fan frame seat and fan thereof
CN109209937A (en) * 2018-08-30 2019-01-15 东莞市银海塑胶电子有限公司 A kind of fan
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Granted publication date: 20120201

Termination date: 20140525