CN101737345B - Small-sized heat radiating fan - Google Patents
Small-sized heat radiating fan Download PDFInfo
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- CN101737345B CN101737345B CN2008101723869A CN200810172386A CN101737345B CN 101737345 B CN101737345 B CN 101737345B CN 2008101723869 A CN2008101723869 A CN 2008101723869A CN 200810172386 A CN200810172386 A CN 200810172386A CN 101737345 B CN101737345 B CN 101737345B
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- heat radiating
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- radiating fan
- sized heat
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Abstract
The invention relates to a small-sized heat radiating fan which comprises a shell, a stator and a rotor, wherein the shell is provided with a bearing seat for bearing the stator and the rotor; the stator is provided with an excitation element and a circuit board; the excitation element is provided with a coil group which is electrically connected with the circuit board, the circuit board is provided with a drive circuit and a speed adjusting unit, and the drive circuit, the speed adjusting unit and the coil group are electrically connected; the rotor is provided with a rotating shaft, a fan wheel and a magnetic sensing part; one end of the rotating shaft is fixedly combined to the fan wheel, and the other end of the rotating shaft penetrates through the excitation element of the stator and is rotatably combined to the stator; and the magnetic sensing part is arranged on the inner surface of the fan wheel and faces to the excitation element of the stator. Accordingly, by just adjusting a resistance value of the speed adjusting unit, the strength of an alternating magnetic field generated by the coil group can be changed, thereby achieving the aim of changing the rated rotating speed of the small-sized heat radiating fan.
Description
Technical field
The present invention is a kind of small-sized heat radiating fan, particularly about having a speed adjustment unit to adjust the small-sized heat radiating fan of rotating speed.
Background technique
Please refer to shown in Figure 1ly, it illustrates a kind of existing small-sized heat radiating fan.This small-sized heat radiating fan comprises a housing 7, a stator 8 and a rotor 9, and wherein this housing 7 supplies to be installed with this stator 8 and rotor 9, and this housing 7 has a load bearing seat 71 for this stator 8 of carrying and rotor 9; This stator 8 is fixed in this load bearing seat 71 and has an excitation part 81 and a circuit board 82, this excitation part 81 has several coils 811 and is electrically connected with this circuit board 82, so that after a power supply produces a voltage rating via this circuit board 82, this voltage rating is put on this several coils 811, and then form electric current by these several coils 811, make these several coils 811 produce alternating magnetic field; 9 of this rotors have a rotating shaft 91, an impeller 92 and a magnet sensing part 93, one end secure bond of this rotating shaft 91 is in the middle position of this impeller 92, and the other end of this rotating shaft 91 passes excitation part 81 and rotating this stator 8 that is incorporated into of this stator 8, and this magnet sensing part 93 is arranged at the internal surface of this impeller 92, and the excitation part 81 towards this stator 8, in order to respond to the alternating magnetic field that these several coils 811 produce, and then drive this rotor 9 by this alternating magnetic field and rotate relative to this stator 8.Generally speaking, above-mentioned existing small-sized heat radiating fan is only inputted with the formed electric current of this voltage rating by this circuit board 82 and is driven this rotor 9 in this coil 811; Therefore, this rotor 9 is after starting smoothly, and the electric current that namely produces by this voltage rating is rotated with fixing rated speed.
Yet, for the existing small-sized heat radiating fan of this kind, when it must be when downgrading this rated speed according to user demand, namely need to change the number of turn of the coil 811 of this excitation part 81, perhaps this circuit board 82 is provided by another circuit board that can provide than small rated voltage.Therefore, to cause the manufacturer of this existing small-sized heat radiating fan when facing the demand, must produce several excitation parts 81 or circuit board 82 for the small-sized heat radiating fan with different rated speeds, not only can't reduce manufacture cost, even more have the unsalable risk of storing goods.For these reasons, be necessary further to improve above-mentioned existing small-sized heat radiating fan.
Summary of the invention
Main purpose of the present invention provides a small-sized heat radiating fan, and it has a speed adjustment unit of being convenient to replace or adjust, in order to change the rated speed of this small-sized heat radiating fan.
For reaching aforementioned goal of the invention, the technological means that the present invention uses and the effect that can reach by this technological means include:
A kind of small-sized heat radiating fan, it comprises: a housing, a stator and a rotor.This housing has a wind inlet, an exhaust outlet and a load bearing seat, and this wind inlet and exhaust outlet are arranged at the two side faces of this housing, and this load bearing seat is positioned at this housing.This stator is fixed in the load bearing seat of this housing, and have an excitation part and a circuit board, this excitation part is provided with a coil groups and is electrically connected with this circuit board, and this circuit board is provided with one drive circuit and a speed adjustment unit, and this drive circuit, speed adjustment unit and coil groups are electrically connected, and this circuit board has an extension part in addition, and make progress in the footpath of this stator, this extension part is formed at outside the distribution of this excitation part, and this speed adjustment unit then is arranged at the surface of this extension part.This rotor has a rotating shaft, an impeller and a magnet sensing part, one end secure bond of this rotating shaft is in this impeller, and the other end of this rotating shaft passes the excitation part of this stator and rotatingly is incorporated into this stator, and this magnet sensing part is arranged at the internal surface of this impeller and towards the excitation part of this stator.
Wherein: because this circuit board has an extension part in addition; and the footpath at this stator makes progress; this extension part is formed at outside the distribution of this excitation part; this speed adjustment unit then is arranged at the surface of this extension part; in order to can in the situation that is not subject to this excitation part obstruction fully, carry out adjustment or the replacement of this speed adjustment unit.
This drive circuit, speed adjustment unit and coil groups are connected in series.
It is a resistor that this speed adjustment unit is selected, and the resistance value of this resistor is 0 ohm or has resistance value more than 0 ohm.
It is a wafer resistor or a variable resistor that this resistor can be selected.
Whereby, the invention has the beneficial effects as follows that the resistance value that only needs to adjust this speed adjustment unit can change the intensity of the alternating magnetic field that this coil groups produces, and then reach the purpose of the rated speed that changes this small-sized heat radiating fan.
In addition, be positioned at diametrically by described speed adjustment unit outside the distribution of this excitation part, so that when adjusting or replacing this speed adjustment unit, can avoid being subject to this excitation part and stop and affect and adjust or the displacement operation.
Description of drawings
Fig. 1: the exploded perspective view of existing small-sized heat radiating fan.
Fig. 2: the exploded perspective view of the small-sized heat radiating fan of preferred embodiment of the present invention.
Fig. 3: the circuit framework schematic representation of the small-sized heat radiating fan of preferred embodiment of the present invention.
Fig. 4: the combination top view of the stator of the small-sized heat radiating fan of preferred embodiment of the present invention.
Fig. 5: the exploded perspective view of another mode of execution of the excitation part of the small-sized heat radiating fan of preferred embodiment of the present invention.
The primary component symbol description:
1 housing, 11 inlet airs, 12 exhaust outlets
13 load bearing seats, 2 stators, 21 excitation parts
211 coil groups, 212 pole pieces, 22 circuit boards
221 drive circuits, 222 speed adjustment units, 223 extension parts
3 rotors, 31 rotating shafts, 32 impellers
33 magnet sensing parts, 7 housings, 71 load bearing seats
8 stators, 81 excitation parts, 811 coils
91 rotating shafts of 82 circuit boards, 9 rotors
92 impellers, 93 magnet sensing parts
Embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, in hereinafter exemplifying preferred embodiment and cooperating accompanying drawing to elaborate:
Please refer to shown in Figure 2ly, it is the exploded perspective view of the preferred embodiment of small-sized heat radiating fan of the present invention.This small-sized heat radiating fan comprises a housing 1, a stator 2 and a rotor 3, and wherein this stator 2 and rotor 3 are located in this housing 1, and this rotor 3 can rotate with respect to this stator 2.
In more detail, this housing 1 has a wind inlet 11, an exhaust outlet 12 and a load bearing seat 13, the two side faces that this wind inlet 11 and exhaust outlet 12 can be arranged at according to the type of small-sized heat radiating fan of the present invention this housing passes through for air-flow, this load bearing seat 13 then is arranged in this housing 1, so that carrying is located in stator 2 and rotor 3 in this housing 1.Wherein, as shown in Figures 2 and 3, an axial fan is selected in preferred embodiment of the present invention, and 12 of this wind inlet 11 and exhaust outlets lay respectively at two opposite side walls of this housing 1, and this load bearing seat 13 is located at this exhaust outlet 12 places.
Referring again to shown in Figure 2, this stator 2 is fixed in this load bearing seat 13, and is provided with an excitation part 21 and a circuit board 22, and this excitation part 21 comprises a coil groups 211, and this coil groups 211 is electrically connected with this circuit board 22; This circuit board 22 has one drive circuit 221 and a speed adjustment unit 222, and the coil groups 211 of this drive circuit 221, speed adjustment unit 222 and this excitation part 21 is electrically connected, and its Placement is preferably and is connected in series as shown in Figure 3.Wherein, this speed adjustment unit 222 can be a resistor, and this resistor has the resistance value more than 0 ohm or 0 ohm, and a better wafer resistor or the variable resistor selected of this resistor.In addition, shown in the combination top view of the stator 2 that illustrates such as Fig. 4, in the footpath of this stator 2 upwards, this speed adjustment unit 222 is better to be positioned at outside the distribution of this excitation part 21; In more detail, this circuit board 22 is better to have an extension part 223 in addition, and in the footpath of this stator 2 upwards, this extension part 223 is formed at outside the distribution of this excitation part 21, and this speed adjustment unit 222 then is arranged at the surface of this extension part 223.In addition, the stator 2 of preferred embodiment of the present invention as shown in Figure 2 and rotor 3 consists of a radial motor, and this excitation part 21 radially extends a pole piece 212 that is wound in this excitation part 21 by this coil groups 211 along several of this stator 2; Yet this excitation part 21 also can be made of other existing motor stator forms.In other words, this excitation part 21 also can be finished by another kind of mode of execution as shown in Figure 5, its coil groups 211 of utilizing wire laying mode will consist of this excitation part 21 directly is formed at this circuit board 22 towards the surface of this rotor 3, consisting of an axial motor, and then can reduce the axial thickness of this stator 2.In this kind mode of execution, can select with a control IC as this drive circuit 221, and this speed adjustment unit 222 still is positioned at outside the distribution of this excitation part 21.
This rotor 3 has a rotating shaft 31, an impeller 32 and a magnet sensing part 33, one end secure bond of this rotating shaft 31 is in the middle position of this impeller 32, and the other end of this rotating shaft 31 passes the excitation part 21 of this stator 2, rotating this stator 2 that is incorporated into of while, and this magnet sensing part 33 is selected a magnet and be arranged at the internal surface of this impeller 32, and towards the excitation part 21 of this stator 2, in order to when these drive circuit 221 input currents produce alternating magnetic field to this coil groups 211, can drive this rotor 3 by this alternating magnetic field and rotate relative to this stator 2.
When operation small-sized heat radiating fan of the present invention operates, one power supply produces a voltage rating via the drive circuit 221 of this circuit board 22, and this voltage rating puts on after this speed adjustment unit 222 and the coil groups 211, namely to should speed adjustment unit 222 and the impedance of coil groups 211 and produce a stabling current, this stabling current passes through this speed adjustment unit 222 and coil groups 211, and produces alternating magnetic fields in this coil groups 211.In the time must adjusting the rated speed of this small-sized heat radiating fan, only need to change the resistance value of this speed adjustment unit 222, can reducing or raise, this voltage rating produces and the electric current by this coil groups 211, and then change the intensity of the alternating magnetic field that this coil groups 211 produces, reach the purpose of adjusting rated speed.Wherein, when this speed adjustment unit 222 is chosen as a variable resistor, can be directly according to the rated speed wanting to reach carry out adjustment; And when this speed adjustment unit 222 is chosen as the resistance with fixed resistance value, can directly replace with the resistance with other resistance values.In addition; because this speed adjustment unit 222 is positioned at outside the distribution of this excitation part 21; therefore when wish changes the rated speed of small-sized heat radiating fan of the present invention; only need this rotor 3 is separated the stator 2 of this small-sized heat radiating fan; can in the situation that is not subject to these excitation part 21 obstructions fully, carry out adjustment or the replacement of this speed adjustment unit 222.Whereby, small-sized heat radiating fan of the present invention can reach the purpose of being convenient to adjust rated speed really.
In sum, must or replace the mode such as this circuit board 82 and adjust its rated speed by the number of turn that changes this coil 811 compared to existing small-sized heat radiating fan, small-sized heat radiating fan of the present invention is because being provided with the speed adjustment unit 222 that is connected in series with this drive circuit 221 and coil groups 211 and has the resistance value more than 0 ohm or 0 ohm, so can reach rapidly by the resistance value that changes this speed adjustment unit 222 purpose of the rated speed of adjusting this small-sized heat radiating fan.And more can be arranged at outside the distribution of this excitation part 21 owing to this speed adjustment unit 222, so can change more easily the work procedure of its resistance value.
Claims (7)
1. small-sized heat radiating fan is characterized in that it comprises:
A housing, it has a wind inlet, an exhaust outlet and a load bearing seat, and this wind inlet and exhaust outlet are arranged at two sides of this housing, and this load bearing seat is positioned at this housing;
A stator, it is fixed in the load bearing seat of this housing, and have an excitation part and a circuit board, this excitation part is provided with a coil groups and is electrically connected with this circuit board, and this circuit board is provided with a drive circuit and a speed adjustment unit, and this drive circuit, speed adjustment unit and coil groups are electrically connected, this circuit board has an extension part in addition, and the footpath at this stator makes progress, and this extension part is formed at outside the distribution of this excitation part, and this speed adjustment unit then is arranged at the surface of this extension part; And
A rotor, it has a rotating shaft, an impeller and a magnet sensing part, one end secure bond of this rotating shaft is in this impeller, and the other end of this rotating shaft pass the excitation part of this stator and rotate be incorporated into this stator, and this magnet sensing part is arranged at the internal surface of this impeller and towards the excitation part of this stator.
2. according to small-sized heat radiating fan claimed in claim 1, it is characterized in that this drive circuit, speed adjustment unit and coil groups are connected in series.
3. according to small-sized heat radiating fan claimed in claim 2, it is characterized in that this speed adjustment unit is a resistor.
4. according to small-sized heat radiating fan claimed in claim 3, it is characterized in that the resistance value of this resistor is 0 ohm.
5. according to small-sized heat radiating fan claimed in claim 3, it is characterized in that this resistor has the resistance value more than 0 ohm.
6. according to small-sized heat radiating fan claimed in claim 3, it is characterized in that this resistor is a variable resistor.
7. according to small-sized heat radiating fan claimed in claim 6, it is characterized in that this resistor is a wafer resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101723869A CN101737345B (en) | 2008-11-04 | 2008-11-04 | Small-sized heat radiating fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101723869A CN101737345B (en) | 2008-11-04 | 2008-11-04 | Small-sized heat radiating fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101737345A CN101737345A (en) | 2010-06-16 |
| CN101737345B true CN101737345B (en) | 2013-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101723869A Active CN101737345B (en) | 2008-11-04 | 2008-11-04 | Small-sized heat radiating fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737345B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111278264B (en) * | 2020-03-24 | 2022-05-13 | Oppo广东移动通信有限公司 | Heat dissipation assembly of electronic equipment and electronic equipment |
| CN111386018B (en) * | 2020-03-24 | 2022-05-20 | Oppo广东移动通信有限公司 | Heat dissipation assembly of electronic equipment and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200806U (en) * | 1987-01-23 | 1987-10-21 | 胡超凡 | Automatic speed-regulating device for electric fan |
| CN2328820Y (en) * | 1997-10-14 | 1999-07-14 | 洪庆升 | Positioning device for small heat radiation fan stator inductive element |
| CN2648126Y (en) * | 2003-09-22 | 2004-10-13 | 保锐科技股份有限公司 | Radiating fan with adjustable rotating speed |
| CN2809282Y (en) * | 2005-05-12 | 2006-08-23 | 陈正钢 | Heat radiation fan with rotation speed regulating element on fan circuit board |
| CN201318305Y (en) * | 2008-11-04 | 2009-09-30 | 建准电机工业股份有限公司 | Small-sized radiating fan |
-
2008
- 2008-11-04 CN CN2008101723869A patent/CN101737345B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200806U (en) * | 1987-01-23 | 1987-10-21 | 胡超凡 | Automatic speed-regulating device for electric fan |
| CN2328820Y (en) * | 1997-10-14 | 1999-07-14 | 洪庆升 | Positioning device for small heat radiation fan stator inductive element |
| CN2648126Y (en) * | 2003-09-22 | 2004-10-13 | 保锐科技股份有限公司 | Radiating fan with adjustable rotating speed |
| CN2809282Y (en) * | 2005-05-12 | 2006-08-23 | 陈正钢 | Heat radiation fan with rotation speed regulating element on fan circuit board |
| CN201318305Y (en) * | 2008-11-04 | 2009-09-30 | 建准电机工业股份有限公司 | Small-sized radiating fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101737345A (en) | 2010-06-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: The new Taiwan China Ya Lu Kaohsiung City No. 30 Lane 296 Patentee after: Jianzhun Electric Motor Industry Co., Ltd. Address before: Are China Taiwan Lingya Kaohsiung No. 120 12 floor 1 Patentee before: Jianzhun Electric Motor Industry Co., Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100616 Assignee: Kunshan Guangxing Electronics Co., Ltd. Assignor: Jianzhun Electric Motor Industry Co., Ltd. Contract record no.: 2018990000122 Denomination of invention: Small-sized heat radiating fan Granted publication date: 20130529 License type: Common License Record date: 20180508 |