TW201418580A - Cooling fan - Google Patents

Cooling fan Download PDF

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Publication number
TW201418580A
TW201418580A TW101142252A TW101142252A TW201418580A TW 201418580 A TW201418580 A TW 201418580A TW 101142252 A TW101142252 A TW 101142252A TW 101142252 A TW101142252 A TW 101142252A TW 201418580 A TW201418580 A TW 201418580A
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TW
Taiwan
Prior art keywords
fan
hub
heat dissipation
rotor
dissipation fan
Prior art date
Application number
TW101142252A
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Chinese (zh)
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TWI544155B (en
Inventor
Wen-Cheng Chen
Chien-Yao Liao
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Foxconn Tech Co Ltd
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Application filed by Foxconn Tech Co Ltd filed Critical Foxconn Tech Co Ltd
Priority to TW101142252A priority Critical patent/TWI544155B/en
Priority to US13/727,500 priority patent/US20140134011A1/en
Publication of TW201418580A publication Critical patent/TW201418580A/en
Application granted granted Critical
Publication of TWI544155B publication Critical patent/TWI544155B/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades

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

Abstract

A cooling fan includes a fan housing, a stator and a rotor received in the fan housing. The fan housing defines an inlet and an outlet opposite to the inlet. The rotor is rotatable relative to the stator. The rotor includes a hub and a plurality of blades extending outwardly from an outer periphery of the hub. A flange slantwise extends from a top end of the blade. Air flows through the housing from the inlet to the outlet and impacts the flanges and the blades.

Description

散熱風扇Cooling fan

本發明涉及一種風扇，尤其涉及一種散熱風扇。The present invention relates to a fan, and more particularly to a heat dissipation fan.

習知的散熱風扇包括一扇框及收容於扇框內的一定子及一轉子。定子包括固定於扇框的一基座及套設於基座上的一鐵心。轉子包括一筒狀的輪轂、一端固定於輪轂內的一轉軸及收容於輪轂內的一磁組。轉軸的另一端穿設鐵心並與基座固定而支撐輪轂。轉子在鐵心與磁組的磁吸力的作用下而能夠相對於定子固定。惟，定子與轉子之間的磁吸力會使定子與轉子的磁力中心的偏移，從而使風扇旋轉時因軸向的力的變化而產生軸向的振動產生噪音。A conventional cooling fan includes a frame and a stator and a rotor housed in the fan frame. The stator includes a base fixed to the fan frame and a core sleeved on the base. The rotor includes a cylindrical hub, a rotating shaft fixed at one end in the hub, and a magnetic group received in the hub. The other end of the rotating shaft is threaded and fixed to the base to support the hub. The rotor can be fixed relative to the stator under the action of the magnetic force of the core and the magnetic group. However, the magnetic attraction between the stator and the rotor shifts the center of the magnetic force between the stator and the rotor, thereby causing axial vibrations to generate noise due to changes in the axial force when the fan rotates.

有鑒於此，有必要提供一種穩定性好、噪音小的風扇的轉子。In view of this, it is necessary to provide a rotor of a fan with good stability and low noise.

一種散熱風扇，包括扇框、收容於扇框內的定子及轉子，所述扇框具有相對設置的入風口及出風口，所述轉子可相對定子旋轉，所述轉子包括輪轂及自輪轂向外延伸的扇葉，所述扇葉的一端形成有傾斜的折邊，自所述入風口進入散熱風扇內部的空氣朝向出風口方向下壓所述折邊及扇葉後自出風口流出散熱風扇。A cooling fan includes a fan frame, a stator and a rotor housed in the fan frame, the fan frame having opposite air inlets and air outlets, the rotor being rotatable relative to the stator, the rotor including the hub and the self-hub outward An extended fan blade is formed with an inclined flange at one end of the fan blade. The air entering the heat dissipation fan from the air inlet port presses the flange and the fan blade toward the air outlet port, and then flows out of the heat dissipation fan from the air outlet port.

與習知技術相比，本發明中，因扇葉的設置有傾斜的折邊，從而使轉子的受壓面積增大，使得空氣進入散熱風扇時加強了對轉子的下壓力，進而達到加強轉子軸向下壓力、減小軸向振動的作用，減小了噪音的產生。Compared with the prior art, in the present invention, since the blade is provided with a slanted hem, the pressure receiving area of the rotor is increased, so that when the air enters the heat-dissipating fan, the downward pressure on the rotor is strengthened, thereby achieving the reinforced rotor. The axial downward pressure and the reduction of axial vibration reduce the generation of noise.

請參閱圖1，散熱風扇100包括一扇框10及收容於扇框10內的一定子20及一轉子30。Referring to FIG. 1 , the cooling fan 100 includes a frame 10 and a stator 20 and a rotor 30 received in the frame 10 .

請同時參閱圖2所述轉子30包括一輪轂32、一轉軸34、一磁組36及若干扇葉38。所述輪轂32包括一圓形的頂壁322及自所述頂壁322的周緣垂直向下延伸的一筒狀側壁324。所述頂壁322的下表面的中央向下延伸形成一軸座323。所述轉軸34自所述軸座323豎直向下延伸，並於遠離所述軸座323的一端形成一自由端342。所述磁組36呈環狀，其貼設於所述輪轂32的側壁324的內表面。若干扇葉38環設於所述側壁324的週邊並自側壁324呈放射狀傾斜向外延伸且相互間隔設置。Referring to FIG. 2 at the same time, the rotor 30 includes a hub 32, a rotating shaft 34, a magnetic group 36 and a plurality of blades 38. The hub 32 includes a circular top wall 322 and a cylindrical side wall 324 extending vertically downward from the periphery of the top wall 322. The center of the lower surface of the top wall 322 extends downward to form a shaft seat 323. The rotating shaft 34 extends vertically downward from the shaft seat 323 and forms a free end 342 at an end away from the shaft seat 323. The magnetic group 36 is annular and is attached to the inner surface of the side wall 324 of the hub 32. A plurality of blades 38 are disposed around the periphery of the side wall 324 and extend radially outward from the side wall 324 and are spaced apart from each other.

每一扇葉38包括一自輪轂32向外延伸的連接段381及遠離輪轂32的一延伸段383。所述連接段381為一光滑的弧形片體，自輪轂32的側壁324向外沿順時針方向逐漸彎折且其寬度自與側壁324連接的近端朝向遠離側壁324的遠端逐漸增大。所述延伸段383為一長方形片體，自連接段381的遠端向外延伸形成，且其上、下相對兩端與遠端的最高點及最底點共面。所述延伸段383自側壁324向外延伸的長度遠小於連接段381自側壁324向外延伸的長度。所述延伸段383的上端外側傾斜延伸有一縱長折邊385。所述折邊385的外端與延伸段383的外端共面。所述折邊385的長度略小於延伸段383的長度。所述折邊385的寬度小於所述延伸段383的寬度。這些扇葉38的折邊385沿逆時針方向環繞輪轂32彎折設置。Each blade 38 includes a connecting section 381 extending outwardly from the hub 32 and an extension 383 remote from the hub 32. The connecting section 381 is a smooth curved piece which is gradually bent outward in the clockwise direction from the side wall 324 of the hub 32 and whose width gradually increases from the proximal end connected to the side wall 324 toward the distal end away from the side wall 324. . The extending portion 383 is a rectangular sheet body extending outward from the distal end of the connecting portion 381, and the upper and lower opposite ends thereof are coplanar with the highest point and the bottommost point of the distal end. The length of the extension 383 extending outward from the sidewall 324 is much smaller than the length of the connecting segment 381 extending outward from the sidewall 324. A longitudinal flange 385 is obliquely extended on the outer side of the upper end of the extending portion 383. The outer end of the flange 385 is coplanar with the outer end of the extension 383. The length of the flange 385 is slightly less than the length of the extension 383. The width of the flange 385 is smaller than the width of the extension 383. The flanges 385 of the blades 38 are bent around the hub 32 in a counterclockwise direction.

所述定子20包括一定子鐵心22、一線圈24、一電路板26、一絕緣架28。所述絕緣架28將定子鐵心22包覆於其內。所述線圈24纏繞於絕緣架28上。所述電路板26設於所述絕緣架28的底端並與線圈24電性相連。所述定子鐵心22、絕緣架28及電路板26的中央分別形成相互對應的同軸孔，從而組裝後於整個定子20的中央形成上下貫穿的一安裝孔27。The stator 20 includes a stator core 22, a coil 24, a circuit board 26, and an insulating frame 28. The insulating frame 28 encloses the stator core 22 therein. The coil 24 is wound around an insulating frame 28. The circuit board 26 is disposed at a bottom end of the insulating frame 28 and electrically connected to the coil 24. The center of the stator core 22, the insulating frame 28, and the circuit board 26 respectively form coaxial holes corresponding to each other, and after assembly, a mounting hole 27 penetrating vertically is formed in the center of the entire stator 20.

所述扇框10包括一中空框體12及設於框體12底部中央的一基座14。所述框體12的頂部形成一入風口17，與所述入風口17相對的底部形成一出風口18。所述基座14設於所述出風口18的中央。所述基座14的中央設有一中柱15，所述中柱15自所述基座14的上表面向入風口17所在方向凸伸。所述中柱15為一柱狀體，其中央沿軸向形成一穿孔150，所述穿孔150內收容有一對軸承80。The fan frame 10 includes a hollow frame 12 and a base 14 disposed at the center of the bottom of the frame 12. An air inlet 17 is formed at the top of the frame 12, and an air outlet 18 is formed at a bottom opposite to the air inlet 17. The base 14 is disposed at the center of the air outlet 18 . A center pillar 15 is disposed at a center of the base 14 , and the center pillar 15 protrudes from an upper surface of the base 14 in a direction of the air inlet 17 . The center pillar 15 is a columnar body having a through hole 150 formed in the center thereof in the axial direction, and a pair of bearings 80 are accommodated in the through hole 150.

組裝所述散熱風扇100時，所述定子20套設於所述中柱15的週邊，所述中柱15的頂端自安裝孔27從下往上依次穿過定子20的電路板26、絕緣架28、定子鐵心22而收容於定子20的安裝孔內。所述轉子30的輪轂32罩覆於定子20上，轉軸34的自由端342插入至上下軸承80的軸孔中，通過軸承80支撐轉子30相對定子20旋轉。所述扇葉38的折邊385位於扇框10的頂端。When the heat dissipating fan 100 is assembled, the stator 20 is sleeved around the center pillar 15 , and the top end of the center pillar 15 passes through the mounting hole 27 from the bottom to the bottom through the circuit board 26 of the stator 20 and the insulating frame. 28. The stator core 22 is housed in a mounting hole of the stator 20. The hub 32 of the rotor 30 covers the stator 20, and the free end 342 of the rotating shaft 34 is inserted into the shaft hole of the upper and lower bearings 80, and the rotor 30 is supported by the bearing 80 to rotate relative to the stator 20. The flange 385 of the blade 38 is located at the top end of the fan frame 10.

所述散熱風扇100使用時，轉子30相對定子20旋轉而將扇葉38間的空氣甩出從而使外部的空氣自入風口17外進入散熱風扇100內部，這些空氣自入風口17朝向出風口18的方向向下按壓扇葉38及折邊385，然後自出風口18流出散熱風扇100。When the heat dissipation fan 100 is used, the rotor 30 rotates relative to the stator 20 to pull out the air between the blades 38, so that the outside air enters the interior of the heat dissipation fan 100 from outside the air inlet port 17, and the air is directed from the air inlet port 17 toward the air outlet port 18. The direction of the blade 38 and the flange 385 are pressed downward, and then the cooling fan 100 flows out of the air outlet 18.

本申請中，因扇葉38的上端設置有傾斜的折邊385，相對習知的扇葉而言，轉子30的受壓面積增大，使得空氣進入散熱風扇100時加強了對轉子30的下壓力，進而達到加強轉子30軸向下壓力、減小軸向振動的作用，如此減小了噪音的產生。In the present application, since the upper end of the blade 38 is provided with an inclined flange 385, the pressure-receiving area of the rotor 30 is increased relative to the conventional blade, so that the air is forced into the cooling fan 100 to strengthen the lower portion of the rotor 30. The pressure, in turn, enhances the axial downward pressure of the rotor 30 and reduces the axial vibration, thus reducing noise generation.

可以理解地，在其他實施例中，所述折邊385也可設置在延伸段383下端或其他部位並且結構也不局限於縱長的片體，只要其能夠起到增加轉子30的受壓面積即可。It can be understood that in other embodiments, the flange 385 can also be disposed at the lower end or other portion of the extension 383 and the structure is not limited to the elongated sheet as long as it can increase the pressure receiving area of the rotor 30. Just fine.

另外，本領域技術人員還可在本發明精神內做其他變化，當然，這些依據本發明精神所做之變化，都應包含在本發明所要求保護之範圍之內。In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

10．．．扇框10. . . Fan frame

12．．．中空框體12. . . Hollow frame

14．．．基座14. . . Pedestal

15．．．中柱15. . . Middle column

17．．．入風口17. . . Air inlet

18．．．出風口18. . . Air outlet

20．．．定子20. . . stator

22．．．定子鐵心twenty two. . . Stator core

24．．．線圈twenty four. . . Coil

26．．．電路板26. . . Circuit board

27．．．安裝孔27. . . Mounting holes

28．．．絕緣架28. . . Insulation frame

30．．．轉子30. . . Rotor

32．．．輪轂32. . . Wheel hub

34．．．轉軸34. . . Rotating shaft

36．．．磁組36. . . Magnetic group

38．．．扇葉38. . . Fan blade

80．．．軸承80. . . Bearing

100．．．散熱風扇100. . . Cooling fan

150．．．穿孔150. . . perforation

322．．．頂壁322. . . Top wall

323．．．軸座323. . . Shaft seat

324．．．側壁324. . . Side wall

342．．．自由端342. . . Free end

381．．．連接段381. . . Connection segment

383．．．延伸段383. . . Extension

385．．．折邊385. . . Folding

圖1係本發明一實施例的風扇的剖視圖。1 is a cross-sectional view of a fan in accordance with an embodiment of the present invention.

圖2係圖1所示風扇的轉子的立體圖。Figure 2 is a perspective view of the rotor of the fan shown in Figure 1.

10．．．扇框10. . . Fan frame

12．．．中空框體12. . . Hollow frame

14．．．基座14. . . Pedestal

15．．．中柱15. . . Middle column

17．．．入風口17. . . Air inlet

18．．．出風口18. . . Air outlet

20．．．定子20. . . stator

22．．．定子鐵心twenty two. . . Stator core

24．．．線圈twenty four. . . Coil

26．．．電路板26. . . Circuit board

27．．．安裝孔27. . . Mounting holes

28．．．絕緣架28. . . Insulation frame

30．．．轉子30. . . Rotor

32．．．輪轂32. . . Wheel hub

34．．．轉軸34. . . Rotating shaft

36．．．磁組36. . . Magnetic group

38．．．扇葉38. . . Fan blade

80．．．軸承80. . . Bearing

100．．．散熱風扇100. . . Cooling fan

150．．．穿孔150. . . perforation

322．．．頂壁322. . . Top wall

323．．．軸座323. . . Shaft seat

324．．．側壁324. . . Side wall

342．．．自由端342. . . Free end

385．．．折邊385. . . Folding

Claims (10)

一種散熱風扇，包括扇框、收容於扇框內的定子及轉子，所述扇框具有相對設置的入風口及出風口，所述轉子可相對定子旋轉，其改良在於：所述轉子包括輪轂及自輪轂向外延伸的扇葉，所述扇葉的一端形成有傾斜的折邊，自所述入風口進入散熱風扇內部的空氣朝向出風口方向下壓所述折邊及扇葉後自出風口流出散熱風扇。A cooling fan includes a fan frame, a stator and a rotor housed in the fan frame, the fan frame has opposite air inlets and air outlets, and the rotor is rotatable relative to the stator. The improvement is that the rotor includes a hub and a blade extending outward from the hub, one end of the blade is formed with a slanted hem, and the air entering the heat-dissipating fan from the air inlet is pressed against the hem and the fan blade from the air outlet. Flow out of the cooling fan. 如申請專利範圍第1項所述的散熱風扇，其中，所述折邊沿逆時針方向環繞輪轂設置。The heat dissipation fan of claim 1, wherein the flange is disposed around the hub in a counterclockwise direction. 如申請專利範圍第1項所述的散熱風扇，其中，所述每一扇葉包括自輪轂向外延伸的連接段及自連接段向外延伸的延伸段，所述折邊設置於所述延伸段的上端。The heat dissipation fan of claim 1, wherein each of the blades includes a connecting portion extending outward from the hub and an extending portion extending outward from the connecting portion, the folded edge being disposed at the extending The upper end of the segment. 如申請專利範圍第3項所述的散熱風扇，其中，所述連接段自輪轂沿順時針方向彎折。The heat dissipation fan of claim 3, wherein the connecting section is bent in a clockwise direction from the hub. 如申請專利範圍第4項所述的散熱風扇，其中，所述連接段為光滑的弧形片體，寬度自與輪轂連接的近端朝向遠離輪轂的遠端逐漸增大。The heat dissipation fan of claim 4, wherein the connecting section is a smooth curved piece, and the width gradually increases from a proximal end connected to the hub toward a distal end away from the hub. 如申請專利範圍第5項所述的散熱風扇，其中，所述延伸段為長方形片體，所述延伸段自連接段的遠端向外延伸形成且其上、下相對兩端與遠端的最高點及最底點共面。The heat dissipation fan of claim 5, wherein the extension is a rectangular piece, and the extension extends outward from the distal end of the connecting section and the upper and lower ends thereof are opposite to the distal end. The highest point and the bottom point are coplanar. 如申請專利範圍第5項所述的散熱風扇，其中，所述延伸段自輪轂向外延伸的長度小於所述連接段自輪轂延伸的長度。The heat dissipation fan of claim 5, wherein the length of the extension extending outward from the hub is less than the length of the connection section extending from the hub. 如申請專利範圍第1項所述的散熱風扇，其中，所述折邊為縱長片體。The heat dissipation fan according to claim 1, wherein the folded edge is a vertically long piece. 如申請專利範圍第8項所述的散熱風扇，其中，所述折邊的長度小於所述延伸段的長度。The heat dissipation fan of claim 8, wherein the length of the flange is smaller than the length of the extension. 如申請專利範圍第8項所述的散熱風扇，其中，所述扇葉呈放射狀間隔設置。The heat dissipation fan of claim 8, wherein the fan blades are radially spaced apart.
TW101142252A 2012-11-13 2012-11-13 Cooling fan TWI544155B (en)

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USD860956S1 (en) * 2017-03-31 2019-09-24 Delta Electronics, Inc. Impeller
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JP6950422B2 (en) * 2017-09-29 2021-10-13 日本電産株式会社 Centrifugal fan

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JP3954821B2 (en) * 2001-09-03 2007-08-08 建準電機工業股▲分▼有限公司 Structure of radiator
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US10808715B2 (en) 2017-10-26 2020-10-20 Acer Incorporated Heat dissipation fan

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