CN103148008A - Temperature control fan - Google Patents
Temperature control fan Download PDFInfo
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- CN103148008A CN103148008A CN2013100776658A CN201310077665A CN103148008A CN 103148008 A CN103148008 A CN 103148008A CN 2013100776658 A CN2013100776658 A CN 2013100776658A CN 201310077665 A CN201310077665 A CN 201310077665A CN 103148008 A CN103148008 A CN 103148008A
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Abstract
The invention relates to cooling equipment, in particular to a temperature control fan. The temperature control fan comprises fan blades, wherein the fan blades are mounted on a housing; a motor for driving the fan blades is mounted on the housing; the temperature control fan is characterized in that the motor electrically connected with a control unit; the control unit comprises a speed control circuit and a change-over switch; the speed control circuit comprises a rotating speed adjustment knob, a temperature acquisition unit and a speed acquisition unit; the temperature acquisition unit comprises a thermistor arranged in the control unit; and the rotating speed acquisition unit is connected with three photoelectric devices arranged on the housing. Therefore, the fan is reasonable in design, practical and convenient.
Description
(1) technical field
The present invention relates to the equipment of enjoying the cool, particularly a kind of temperature-controlled fan.
(2) background technique
Fan is a kind of by allowing air circulation and flow to take away the cooling device of heat, is a kind of indoor electric appliance of traditional, environmental protection.In prior art, the motor that is useful in computer fan has been generally brushless motor and brshless DC motor.Reason is that direct current generator is widely applied in the place that requires speed governing for a long time owing to having good governor control characteristics, wider speed adjustable range.But the shortcomings such as brushless motor exists the contact parts such as commutator, slip ring and brush easily to wear and tear, noise is large are arranged.And brshless DC motor is keeping having the good control characteristic of brushless motor, with that brushless motor is arranged is the same, but put Permanent Magnet Steel on rotor on electromagnetic structure, armature winding is placed on stator, thereby got rid of electric sliding contact mechanism, eliminated the main contributor of fault.Owing to there is no winding on rotor, therefore just there is no the loss of electricity.Again because main field is constant, so iron loss is also minimum, thereby further increased the reliability of work.
during due to computer operating, inner (especially CPU) can produce high heat, if heat is not left in good time, can affect it and carry out efficient or its life-span, therefore, it is very important how effectively heat being left, commonly use in the radiating structure of thin computer inside, the air sucking mouth of fan is positioned at the top, when fan running, be about to the computer-internal air by fan top suction, again via the radiating fin of fan below by the left and right sides or surrounding air-out, and reach radiating effect, and heal when high in the formed air draught of fan top and casing space, its radiating effect is also better, therefore, when this mode is used for the limited computer housing of overall height, in order to strive for air draught space, top, must cut down the radiating fin height approximately more than 5mm, otherwise fan top and casing are kept off without enough air draught spaces, can inhalation cycle dispel the heat, yet, increased although cut down the height of radiating fin the air quantity that sucks, but reduced the area of heat radiation, and can't really reach good radiating effect, therefore also can't solve the problem of heat radiation.
Fan of the prior art exists that noise is large, the noise of machine own or vibration, and the characteristics of high energy consumption.These defectives are unreasonable the causing of control of Fan Motor mode of adopting due to fan electromotor.
Along with improving constantly of rare earth permanent-magnetic material and power electronic devices performance and price, the application in industry of brshless DC motor and speed control system is more and more extensive.The speed regulating control of brshless DC motor is a kind of control mode by the synchronizer frequency control of motor speed of inverter supply in essence.Frequency control of motor speed not only can stepless change, and different according to load characteristic, and suitably adjusting can make motor operate in all the time efficient district, and guarantees good roadability.
(3) summary of the invention
The present invention provides a kind of reasonable in design in order to make up the deficiencies in the prior art, and structure is temperature-controlled fan easily.
The present invention is achieved through the following technical solutions:
A kind of temperature-controlled fan, comprise fan page, fan page is arranged on housing, the motor that drives fan page is installed on housing, it is characterized in that: described motor is electrically connected with control unit, control unit comprises rotating-speed control circuit and throw over switch, and rotating-speed control circuit comprises adjustment of rotational speed button, temperature collecting cell and speed acquisition unit; Described temperature collecting cell comprises the thermistor that is arranged at control unit inside; Described rotating speed collecting unit is connected with three optoelectronic devices that are arranged on housing.
Described throw over switch comprises the first firing point, the second firing point and the 3rd firing point that is arranged on housing; Described rotating-speed control circuit also comprises the constant current feeder loop, input, the output terminal of the acquisition elements cross-over connection constant current feeder loop of temperature collecting cell.
The invention has the beneficial effects as follows: the temperature-controlled fan of this invention is simple in structure, adopt the fan electromotor circuit of good control performance, can the high-speed driving fan electromotor, in the situation that the radiating fin height reduces, reach good radiating effect, solve the problem of computer to dissipate heat; The present invention is based on monolithic brush-less Dc motor and integrated manipulator and drive the computer fan motor, realize electronic, braking and speed governing etc., can realize the stepless speed regulation of computer fan motor speed by sort circuit, allow the air-out even regulation of computer fan, control circuit mainly is comprised of drive circuit and main circuit, is suitable for wide popularization and application.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present invention;
Fig. 2 is overall structure schematic diagram of the present invention;
Fig. 3 is brshless DC motor principle schematic of the present invention;
Fig. 4 is the circuit theory diagrams of the embodiment of the present invention;
In figure, 1 fan, 2 control units, 3 housings, 11 housings, 20 power supplys, 21 rotating-speed control circuits, 22 throw over switches, 23 adjustment of rotational speed buttons, 24 temperature collecting cells, 221 first firing points, 222 second firing points, 223 the 3rd firing points.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises fan page, fan page is arranged on housing 3, the motor that drives fan page is installed on housing 3, it is characterized in that: described motor is electrically connected with control unit 2, control unit 2 comprises rotating-speed control circuit 21 and throw over switch 22, and rotating-speed control circuit 21 comprises adjustment of rotational speed button 23, temperature collecting cell 24 and speed acquisition unit; Described temperature collecting cell 24 comprises the thermistor that is arranged at control unit 2 inside; Described rotating speed collecting unit is connected with three optoelectronic devices that are arranged on housing 3; Described throw over switch 22 comprises the first firing point 221, the second firing point 222 and the 3rd firing point 223 that is arranged on housing 3; Described rotating-speed control circuit 21 also comprises the constant current feeder loop, input, the output terminal of the acquisition elements cross-over connection constant current feeder loop of temperature collecting cell 24.
Adopt temperature-controlled fan of the present invention, fan 1 of the present invention comprises, fan blade B, skeleton frame body C, blade driving unit and control unit etc.Consult improved cooling fan shown in Figure 11, rotating by fan blade B the air-flow that produces is to flow according to the route shown by arrows direction, can know the wind inlet position of finding out that whole cooling fan 1 flows to for air, oneself prolongs by the perforate cross section expansion that previous cooling fan 1 is installed with the peripheral lateral margin section parts that comprises this fan blade B, thereby the water conservancy diversion effect of this fan blade B can be improved because of the air stream input of wind inlet enlarged-area increase unit time rotating speed.It is inner that fan blade is arranged on the skeleton frame body, and blade driving unit is arranged on and is used for the drive fan blade rotation on the skeleton frame body; The driver element of blade comprises motor and linkage structure.Motor can be brushless direct current motor.
Fig. 2 is the overall structure schematic diagram, it is a kind of radiation fan with adjustment of rotational speed mode, it comprises: fan 1 and control unit 2, wherein this control unit 2 is by power supply 20 power supplies, comprise a rotating-speed control circuit 21 and a throw over switch 22, when this throw over switch 22 switches to the first firing point 221, this rotating-speed control circuit 21 can with adjustment of rotational speed button 23 electrical connections that are arranged on the housing 11 of fan 1 of this heat radiation, the rotating speed of the fan 1 of this heat radiation is adjusted by the adjustment of rotational speed button 23 that is arranged on this radiation fan 1, and when this throw over switch 22 switches to the second firing point 222, this rotating-speed control circuit 21 can with temperature collecting cell 24 electrical connections that are arranged at the near-thermal source, make the rotating speed of fan 1 of this heat radiation by the temperature of 24 sensings of this temperature collecting cell, automatically adjust the rotating speed on the fan 1 of this heat radiation, and order is when this throw over switch 22 switches to the 3rd firing point 223, this rotating-speed control circuit 21 can with one be arranged at as the electrical connection of the adjustment of rotational speed button 23 on the exterior case such as computer host casing 11, the user just can directly carry out adjustment of rotational speed by the adjustment of rotational speed button 23 that is arranged on external casing 3.Above-mentioned throw over switch 22, can be arranged on the housing 3 of this radiation fan 1, or ornamental being arranged at as on the exterior case such as computer host box 11, the user can directly cut this throw over switch 22 in 11 groups of exterior case, in order to select to adjust the pattern of radiating fan rotation speed.
when throw over switch 22 switches to the first firing point 221, this rotating-speed control circuit 221 can with adjustment of rotational speed button 23 electrical connections that are arranged on the housing 11 of this radiation fan 1, the rotating speed of this radiation fan 1 is adjusted by the adjustment of rotational speed button 23 that is arranged on this radiation fan 1, this main purpose is the requirement according to the client, after demand rotating speed by these adjustment of rotational speed button 23 adjustment, just be arranged in the exterior case 11 such as computer host box, after computer activates, this radiation fan 1 just rotates with certain speed, because this adjustment of rotational speed button 23 is to be hidden in this exterior case 11, therefore generally speaking, after computer dispatches from the factory, just do not adjust for the user.When this rate conversion switch 22 switches to the second firing point 222, this rotating-speed control circuit 21 and one is arranged at temperature collecting cell 24 electrical connections in near-thermal source, make the rotating speed of this radiation fan 1 by the temperature of 24 sensings of this temperature collecting cell, automatically adjust the rotating speed on this radiation fan 1, at this moment, the rotating speed of radiation fan just is an automatic adjustment state, and the user just can't be at computer host box footpath self-regulating radiating fan rotation speed.when computer dispatches from the factory, when this throw over switch 22 is switched to the 3rd firing point 223, because this rotating-speed control circuit 21 and one is arranged at as adjustment of rotational speed button 25 electrical connections on the exterior case such as computer host casing 3, therefore the user just can directly carry out adjustment of rotational speed in the adjustment of rotational speed button 25 that installs on housing 3 externally, and must not take exterior case as computer host box apart, this mainly is to provide generally must control user's use of adjusting temperature in computer host box at any time, when the user raises via the assembly temperature in the computer main of the temp control indicator discovery keyholed back plate of device, adjustment of rotational speed button on switch exterior case 11 25 promotes the rotating speed of this radiation fan 1 in good time, improve radiating efficiency in good time, when if the user finds that the assembly temperature of institute's keyholed back plate is positioned at a low-temperature condition certainly, just but the adjustment of rotational speed button on switch exterior case 11 25 reduces the rotating speed of this radiation fan 1, to save the use of the energy.
Fig. 3 is brshless DC motor principle schematic of the present invention, and it has provided the required links of brshless DC motor work.In the motor body that provides in Fig. 3, rotor is a pair of utmost point, and stator is the winding of the star-like connection of three-phase.As position transducer, the light-transmitting portion of light barrier occupies 120 degree with optoelectronic device, and three optoelectronic devices differ 120 degree and place, thereby its angle of flow is also 120 degree, and but differs each other 120 degree.Rotor-position shown in Figure 2 is corresponding with the position shown in figure.Optoelectronic device VP1 is irradiated by light due to this moment, thereby makes transistor V1 conducting, and electric current flows into winding A, and this winding current and rotor magnetic pole effect produce electromagnetic torque counterclockwise rotates rotor.When rotor magnetic pole forwards position shown in figure to, directly load also and then synchronous rotation of rotating sector on rotor shaft, and cover VP1, thereby make VP2 be subjected to irradiation, so V1 cut-off, V2 conducting.Electric current disconnects and flows into winding B ' from winding A, is that rotor continues the counter clockwise direction rotation, and drives light barrier counterclockwise rotation simultaneously.When rotor magnetic pole forwarded position shown in figure to, this moment, light barrier covered VP2, made VP3 illuminated, caused the V2 cut-off, the V3 conducting, thereby electric current flows into winding C-C ', continues rotation in the counterclockwise direction so drive rotor, and comes back to the position of figure.
Like this, along with the rotation of rotor, staor winding is under the control of position transducer, and just the feed successively of phase one phase, realize the commutation of each phase winding electric current.When figure has provided the different rotor position, the waveform of position sensor signal, winding electric kinetic potential, each winding current and electromagnetic torque.In the electromotive force oscillogram, the electromotive force dash area is the moment of this winding current flowing.The waveform of electromotive force has represented the waveform in magnetic field, and in order to obtain peak torque, the winding energising constantly must be when air gap flux density be maximum.Like this, in motor in the middle of the air-gap field waveform maximum magnetic flux compact part divide and should be wider than 120 degree, and straight, can produce larger torque when making the winding conducting, and torque ripple is little; Strict position corresponding relation is arranged between position transducer and each winding, so that the appropriate signal that provides switching transistor, make the winding conducting corresponding to the winding electric kinetic potential is maximum, air gap flux density is the highest position.
Fig. 4 is concrete circuit theory diagrams.As shown in Figure 4, the temperature acquisition element is a high precision thermosensitive resistor TR2, the output terminal of this resistance access constant current feeder loop operational amplifier IC7.Capacitor C is connected across output and the reverse input end A2 of operational amplifier IC7, utilizes the characteristic of capacitor charge and discharge maintenance pressure drop balance, the variation of thermistor TR2 is fed back to the reverse input end 2 of operational amplifier IC7.
The characteristic that has " empty disconnected " due to operational amplifier makes the resistance R 93 that flows through the positive and negative input end of concatenation operation amplifier IC7, the electric current of R95 can be approximated to be zero; And utilize the characteristic of operational amplifier " empty short " to make the low level of thermistor TR3 remain the dividing potential drop of R88, R90, adding the electric current that flows through capacitor C and go to zero because of charging, is exactly the electric current sum that flows through resistance R 94, R96 so flow through the electric current of thermistor TR3.This constant current feeder loop is automatically adjusted and remained to thermistor TR2 provides steady current.
Therefore, when the resistance of thermistor TR2 varied with temperature and changes, the output end voltage of operational amplifier IC7 will change thereupon and automatically be delivered in the next stage amplification circuit.In amplification circuit, the voltage on R86 is constant, is made as U5, and the voltage on the prime thermistor is made as U1, and the output voltage of this amplification circuit is made as U0, makes amplifier be operated in linear magnifying state.When linear change occurs in sampled voltage (being U1), drive the transistor amplifier of rear end by amplification, transistor amplifier drives and changes the rotating speed of fan FAN, makes the rotating speed of fan FAN obtain good linearity control.
Claims (3)
1. temperature-controlled fan, comprise fan page, fan page is arranged on housing (3), the motor that drives fan page is installed on housing (3), it is characterized in that: described motor is electrically connected with control unit (2), control unit (2) comprises rotating-speed control circuit (21) and throw over switch (22), and rotating-speed control circuit (21) comprises adjustment of rotational speed button (23), temperature collecting cell (24) and speed acquisition unit; Described temperature collecting cell (24) comprises the thermistor that is arranged at control unit (2) inside; Described rotating speed collecting unit is connected with three optoelectronic devices that are arranged on housing (3).
2. temperature-controlled fan according to claim 1, it is characterized in that: described throw over switch (22) comprises the first firing point (221), the second firing point (222) and the 3rd firing point (223) that is arranged on housing (3).
3. temperature-controlled fan according to claim 1, it is characterized in that: described rotating-speed control circuit (21) also comprises the constant current feeder loop, input, the output terminal of the acquisition elements cross-over connection constant current feeder loop of temperature collecting cell (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100776658A CN103148008A (en) | 2013-03-12 | 2013-03-12 | Temperature control fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100776658A CN103148008A (en) | 2013-03-12 | 2013-03-12 | Temperature control fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103148008A true CN103148008A (en) | 2013-06-12 |
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ID=48546266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100776658A Pending CN103148008A (en) | 2013-03-12 | 2013-03-12 | Temperature control fan |
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| Country | Link |
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| CN (1) | CN103148008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901603A (en) * | 2015-05-05 | 2015-09-09 | 安徽江淮汽车股份有限公司 | Speed adjusting brush motor, fan, radiator and automobile |
| CN107131133A (en) * | 2017-06-22 | 2017-09-05 | 河北纳州机械制造有限公司 | A kind of fast quick change wind direction again can with temperature automatic adjustment fan blade angles fan |
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| DE10004473C2 (en) * | 2000-02-02 | 2002-07-18 | Rittal Gmbh & Co Kg | Fan with a device for detecting a flow |
| CN2612982Y (en) * | 2002-10-22 | 2004-04-21 | 联想(北京)有限公司 | Linear controller for controlling rotation speed of system fan based on ambient temperature |
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| US20130049667A1 (en) * | 2011-08-24 | 2013-02-28 | Hon Hai Precision Industry Co., Ltd. | Adjustable speed fan |
-
2013
- 2013-03-12 CN CN2013100776658A patent/CN103148008A/en active Pending
Patent Citations (9)
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| DE10004473C2 (en) * | 2000-02-02 | 2002-07-18 | Rittal Gmbh & Co Kg | Fan with a device for detecting a flow |
| CN2612982Y (en) * | 2002-10-22 | 2004-04-21 | 联想(北京)有限公司 | Linear controller for controlling rotation speed of system fan based on ambient temperature |
| CN2645122Y (en) * | 2003-06-26 | 2004-09-29 | 曜越科技股份有限公司 | Thermal fan with switching rotary speed regulation mode |
| CN101006638A (en) * | 2004-09-24 | 2007-07-25 | 罗姆股份有限公司 | Fan motor drive device and cooler |
| CN2859024Y (en) * | 2005-12-01 | 2007-01-17 | 七盟电子工业股份有限公司 | Fan rotary speed controller structure |
| CN1979432A (en) * | 2005-12-01 | 2007-06-13 | 新巨企业股份有限公司 | Fan rotation-speed control method and its frame |
| CN1963530A (en) * | 2006-11-15 | 2007-05-16 | 台达电子电源(东莞)有限公司 | Apparatus and method for testing rotate speed of fan |
| CN201461478U (en) * | 2009-06-10 | 2010-05-12 | 英业达科技有限公司 | Fan device |
| US20130049667A1 (en) * | 2011-08-24 | 2013-02-28 | Hon Hai Precision Industry Co., Ltd. | Adjustable speed fan |
Non-Patent Citations (1)
| Title |
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| 常晓玲: "《电工技术》", 28 February 2004, 西安电子科技大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901603A (en) * | 2015-05-05 | 2015-09-09 | 安徽江淮汽车股份有限公司 | Speed adjusting brush motor, fan, radiator and automobile |
| CN107131133A (en) * | 2017-06-22 | 2017-09-05 | 河北纳州机械制造有限公司 | A kind of fast quick change wind direction again can with temperature automatic adjustment fan blade angles fan |
| CN107131133B (en) * | 2017-06-22 | 2023-06-13 | 河北纳州机械制造有限公司 | Fan capable of changing wind direction rapidly |
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Application publication date: 20130612 |