CN102852844B - Electric fan - Google Patents
Electric fan Download PDFInfo
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- CN102852844B CN102852844B CN201210322494.6A CN201210322494A CN102852844B CN 102852844 B CN102852844 B CN 102852844B CN 201210322494 A CN201210322494 A CN 201210322494A CN 102852844 B CN102852844 B CN 102852844B
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims description 32
- 238000004804 winding Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses an electric fan, which comprises: the synchronous pulse generator comprises a synchronous pulse generating unit for generating a power supply synchronous pulse, a speed regulation control unit for delaying the power supply synchronous pulse according to the set rotating speed, a rotating speed driving unit containing a bidirectional thyristor and a load motor unit containing a motor, wherein the output end of the synchronous pulse generating unit is connected with the input end of the speed regulation control unit, the output end of the speed regulation control unit is connected with a control electrode of the bidirectional thyristor, a first anode of the bidirectional thyristor is connected with one outgoing line of the motor, a second anode of the bidirectional thyristor is grounded, and the other outgoing line of the motor is connected with a live wire of an alternating current power supply. The invention can solve the problems of excessive load motor control lead-out wires, complex process and high manufacturing cost.
Description
Technical field
The present invention relates to field of household appliances, particularly a kind of electric fan.
Background technique
In prior art, electric fan generally carries out speed governing by gear (3 grades/4 grades/5 grades), arranges when the rotating speed of each grade is product export, selects when user uses in fixing several grades.Alternating current fans, in order to carry out speed governing by gear, adopts tap mode to realize speed governing.
When adopting tap mode speed governing, load motor increases tap number according to the quantity of the gear arranged.Like this, add the quantity of the lighting outlet of motor, make the preparation process of motor more complicated, add manufacture cost.
Summary of the invention
The invention provides a kind of electric fan, control lighting outlet quantity too much, complex process, the problem that manufacture cost is high to solve load motor.
The invention discloses a kind of electric fan, described electric fan comprises: generate the lock-out pulse generating unit of line lock pulse, postpone the speed regulating control unit of power supply lock-out pulse according to the rotating speed arranged, comprise the rotating speed driver element of bidirectional triode thyristor and comprise the load motor unit of motor
The output terminal of lock-out pulse generating unit is connected with the input end of speed regulating control unit,
The output terminal of speed regulating control unit is connected with the control pole of bidirectional triode thyristor,
The first anode and motor lighting outlet of bidirectional triode thyristor is connected, the second plate ground connection of bidirectional triode thyristor,
Another root lighting outlet of motor is connected with the live wire of ac power supply.
Wherein, described lock-out pulse generating unit comprises four diodes, two triodes and four resistance,
The negative electrode of the first diode is together connected with one end of the first resistance with the anode of the second diode, and the other end of the first resistance is connected with the live wire of ac power supply, and the anode of the first diode is together connected with the base stage of the first triode with the anode of the 3rd diode;
The negative electrode of the second diode is together connected with the emitter of the first triode with the negative electrode of the 4th diode, the anode of the 4th diode and the negative electrode together ground connection of the 3rd diode;
The collector electrode of the first triode is connected with one end of the second resistance, the other end of the second resistance is together connected with one end of the 3rd resistance with the base stage of the second triode, and the other end of the 3rd resistance is together connected with DC electrical source low voltage terminal with the emitter of the second triode;
The collector electrode of the second triode is together connected with the input end of speed regulating control unit with one end of the 4th resistance, the other end ground connection of the 4th resistance.
Wherein, described lock-out pulse generating unit also comprises: the 5th resistance,
One end of 5th resistance is connected with the base stage of the first triode, and the other end of the 5th resistance is connected with the emitter of the first triode.
Wherein, described lock-out pulse generating unit also comprises: the first electric capacity,
One end of first electric capacity is connected with the base stage of the first triode, and the other end of the first electric capacity is connected with the emitter of the first triode.
Wherein, described rotary speed controling unit also comprises the 6th resistance, the 7th resistance, the second electric capacity and the 3rd electric capacity,
One end of 6th resistance is connected with the output terminal of described speed regulating control unit, the other end of the 6th resistance is together connected with the control pole of described bidirectional triode thyristor with one end of the second electric capacity, the other end of the second electric capacity and the second plate together ground connection of described bidirectional triode thyristor;
The first anode of described bidirectional triode thyristor is together connected with a lighting outlet of described motor with one end of the 3rd electric capacity, and the other end of the 3rd electric capacity is connected with one end of the 7th resistance, the other end ground connection of the 7th resistance.
Wherein, described rotary speed controling unit also comprises the first inductance,
One end of first inductance is connected with the first anode of described bidirectional triode thyristor, and the other end of the first inductance is together connected with a lighting outlet of described motor with one end of the 3rd electric capacity.
Wherein, described load motor unit also comprises: the 4th electric capacity,
4th electric capacity two ends are connected respectively with motor internal winding two ends.
Wherein, described load motor unit also comprises: the 4th electric capacity,
4th electric capacity two ends are connected respectively with motor internal winding two ends.
Wherein, described speed regulating control unit comprises: microcontroller;
The output terminal of lock-out pulse generating unit is connected with the input end of microcontroller,
The output terminal of microcontroller is connected with the control pole of bidirectional triode thyristor.
Wherein, described microcontroller and external control devices wireless connections.
The invention has the beneficial effects as follows: electric fan of the present invention comprises lock-out pulse generating unit, speed regulating control unit, rotating speed driver element and load motor unit, rotating speed driver element comprises bidirectional triode thyristor, load motor unit comprises motor, wherein, lock-out pulse generating unit generates line lock pulse, speed regulating control unit outputs to bidirectional triode thyristor after this pulse being postponed according to the rotating speed arranged, and bidirectional triode thyristor is connected with motor; Number of conductors needed for motor reduces thus, and the preparation process of motor simplifies, and saves manufacture cost; In addition, electric fan of the present invention can realize the continuous speed adjustment from minimum speed to maximum speed, and speed governing is no longer limited by gear, adds the flexibility of speed governing.
Accompanying drawing explanation
Fig. 1 is the structural drawing of electric fan in the embodiment of the present invention one;
Fig. 2 is the circuit diagram of electric fan in the embodiment of the present invention five.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
See Fig. 1, it is the structural drawing of electric fan in embodiment one provided by the invention.
Electric fan comprises: generate the lock-out pulse generating unit 100 of line lock pulse, postpone the speed regulating control unit 200 of power supply lock-out pulse according to the rotating speed arranged, comprise the rotating speed driver element 300 of bidirectional triode thyristor and comprise the load motor unit 400 of motor.
The output terminal of lock-out pulse generating unit 100 is connected with the input end of speed regulating control unit 200,
The output terminal of speed regulating control unit 200 is connected with the control pole of bidirectional triode thyristor,
The first anode and motor lighting outlet of bidirectional triode thyristor is connected, the second plate ground connection of bidirectional triode thyristor,
Another root lighting outlet of motor is connected with the live wire of ac power supply.
In two lighting outlets of motor, one is common wire, and one is high tap position lighting outlet.Do not distinguish mutually both when connecting, can be that common wire is connected with the first anode of bidirectional triode thyristor, high tap position lighting outlet is connected with the live wire of ac power supply, and also can be connected with the first anode of bidirectional triode thyristor by high tap position lighting outlet, common wire is connected with the live wire of ac power supply.
Wherein, speed regulating control unit 200 can comprise: microcontroller, and the output terminal of lock-out pulse generating unit is connected with the input end of microcontroller, and the output terminal of microcontroller is connected with the control pole of bidirectional triode thyristor.
Described microcontroller and external control devices wireless connections.By the external control devices such as remote controller or display modular, the rotating speed of setting can be informed to speed regulating control unit 200.The rotating speed of this setting can be the arbitrary rotating speed between minimum speed and maximum speed.
In the present embodiment, the working principle of electric fan is: lock-out pulse generating unit 100 produces pulse, speed regulating control unit 200 carries out the time delay corresponding to the rotating speed arranged to this pulse, pulse after time delay provides reference signal for triggering bidirectional triode thyristor, the size of the angle of flow of the corresponding bidirectional triode thyristor of length of time delay.The voltage at motor two ends is regulated by the size of the angle of flow regulating bidirectional triode thyristor, thus adjusting rotary speed.Wherein, delay time is long, and then retation speed of electric fan is little, and the short then retation speed of electric fan of delay time is large.
In the present embodiment electric fan motor needed for lighting outlet quantity be reduced to 2 by 3 to 5 of respective notch compared with prior art, the preparation process of motor obviously simplifies, thus manufacture cost is decreased, in addition, this electric fan can realize the continuous speed adjustment from minimum speed to maximum speed, speed governing is no longer limited by gear, adds the flexibility of speed governing.
Embodiment two
In the present embodiment except following characteristics with embodiment one.
Lock-out pulse generating unit 100 is by comprising the circuit realiration of diode and triode.
Described lock-out pulse generating unit comprises four diodes, two triodes and four resistance,
The negative electrode of the first diode is together connected with one end of the first resistance with the anode of the second diode, and the other end of the first resistance is connected with the live wire of ac power supply, and the anode of the first diode is together connected with the base stage of the first triode with the anode of the 3rd diode; The negative electrode of the second diode is together connected with the emitter of the first triode with the negative electrode of the 4th diode, the anode of the 4th diode and the negative electrode together ground connection of the 3rd diode;
The collector electrode of the first triode is connected with one end of the second resistance, the other end of the second resistance is together connected with one end of the 3rd resistance with the base stage of the second triode, and the other end of the 3rd resistance is together connected with DC electrical source low voltage terminal with the emitter of the second triode;
The collector electrode of the second triode is together connected with the input end of speed regulating control unit with one end of the 4th resistance, the other end ground connection of the 4th resistance.
Wherein, DC electrical source low voltage terminal is-5V.
In the present embodiment, the working principle of lock-out pulse generating unit 100 is: when the positive half cycle of alternating voltage, the second diode current flow, the first triode ON, the second triode ON, now to speed regulating control unit 200 input low level; When the negative half period of alternating voltage, the 4th diode current flow, the first triode ON, the second triode ON, to speed regulating control unit 200 input low level; When occurring the zero point of AC supply voltage, 4 diodes and 2 triodes all end, and to speed regulating control unit 200 input high level, produce the pulse synchronous with ac power frequency, in this, as the benchmark of the angle of flow of adjustment bidirectional triode thyristor.Adopt the circuit of the lock-out pulse generating unit 100 in the present embodiment, produce a pulse when AC supply voltage zero passage.
Further, described lock-out pulse generating unit 100 also comprises: the 5th resistance,
One end of 5th resistance is connected with the base stage of the first triode, and the other end of the 5th resistance is connected with the emitter of the first triode.
Further, described lock-out pulse generating unit 100 also comprises: the first electric capacity,
One end of first electric capacity is connected with the base stage of the first triode, and the other end of the first electric capacity is connected with the emitter of the first triode.
Coordinated with the 5th resistance by the first electric capacity, carry out filtering, the capacitive reactance of electric capacity to high frequency spurs signal that capacitance is determined is smaller, and therefore the first electric capacity is used for filtering High-frequency Interference.Thus avoid high frequency spurs interference to cause interference by triode to late-class circuit, farthest absorb these interference.
Embodiment three
In the present embodiment except following characteristics with embodiment one or embodiment two.
Described rotary speed controling unit 300 also comprises the 6th resistance, the 7th resistance, the second electric capacity and the 3rd electric capacity.
One end of 6th resistance is connected with the output terminal of described speed regulating control unit, the other end of the 6th resistance is together connected with the control pole of described bidirectional triode thyristor with one end of the second electric capacity, the other end of the second electric capacity and the second plate together ground connection of described bidirectional triode thyristor;
The first anode of described bidirectional triode thyristor is together connected with a lighting outlet of described motor with one end of the 3rd electric capacity, and the other end of the 3rd electric capacity is connected with one end of the 7th resistance, the other end ground connection of the 7th resistance.
Realize the line lock pulse after postponing to the control of bidirectional triode thyristor by foregoing circuit, and rotated by SCR control motor, realize the adjustment to retation speed of electric fan.
Further, described rotary speed controling unit also comprises the first inductance,
One end of first inductance is connected with the first anode of described bidirectional triode thyristor, and the other end of the first inductance is together connected with a lighting outlet of described motor with one end of the 3rd electric capacity.
Use inductance, restriction di/dt(transient current variance ratio), prevent the damage that big current variable quantity at short notice causes controllable silicon.
Embodiment four
In the present embodiment except following characteristics with embodiment one, embodiment two or embodiment three.
Described load motor unit 400 also comprises: the 4th electric capacity.
4th electric capacity two ends are connected respectively with motor internal winding two ends.
4th electric capacity electric capacity needed for electric motor starting, itself and motor internal winding two ends are connected in parallel.In some motors, this electric capacity as a part for motor, can not do independent fractionation yet.
Embodiment five
See Fig. 2, it is the circuit diagram of electric fan in the specific embodiment of the invention.
Electric fan comprises: lock-out pulse generating unit 100, speed regulating control unit 200, rotating speed driver element 300, load motor unit 400 and overcurrent protection unit.
By a power circuit by 220V alternating voltage through step-down, rectification, filtering, after voltage stabilizing, for microcontroller provides-5V operating voltage.Should-5v operating voltage also directly can be provided by external dc power.
In Fig. 2, electric capacity C4 and electric capacity C5 is to-5V operating voltage the filtering of input.DC electrical source-5V one end is held with microcontroller VSS and is connected, and GND one end is connected with microcontroller VDD
Lock-out pulse generating unit 100 comprises four diodes, is diode D1 ~ D4; Two triodes are triode Q1 ~ Q2; Five resistance are resistance R1 ~ R5; And an electric capacity, be electric capacity C1.
Diode D1(first diode) negative electrode and diode D2(second diode) anode together with resistance R1(first resistance) one end be connected, the other end of resistance R1 is connected with the live wire of ac power supply, anode and diode D3(the 3rd diode of diode D1) anode together with triode Q1(first triode) base stage be connected.
Negative electrode and diode D4(the 4th diode of diode D2) negative electrode be together connected with the emitter of triode Q1, the anode of diode D4 and the negative electrode together ground connection of diode D3.
Collector electrode and resistance R3(second resistance of triode Q1) one end be connected, the other end and triode Q2(second triode of resistance R3) base stage together with resistance R4(the 3rd resistance) one end be connected, the other end of resistance R4 is together connected with DC electrical source low voltage terminal with the emitter of triode Q2.
Collector electrode and resistance R5(the 4th resistance of triode Q2) one end be together connected with the input end of speed regulating control unit, the other end ground connection of resistance R5.
Resistance R2(the 5th resistance) with electric capacity C1(first electric capacity) one end be together connected with the base stage of triode Q1, the other end of resistance R2 is together connected with the emitter of triode Q1 with the other end of electric capacity C1.
Speed regulating control unit 200 adopts the microcontroller of stable performance in prior art, uses-5V DC electrical source to carry out work.Microcontroller I/O port number meets scheme and uses needs.Wherein, add two buttons, add the button of rotating speed and the button of turn reducing speed, this button can be touch key-press, speed governing knob or the button of other types, for user's manual tune rotating speed.Speed regulating control unit 200 also can obtain by receiving infrared remote-controlled signal the rotating speed arranged.
Rotary speed controling unit 300 comprises bidirectional triode thyristor, two resistance, is resistance R6 ~ R7; Two electric capacity are electric capacity C2 ~ C3; And an inductance, be inductance L 1.
Resistance R6(the 6th resistance) one end be connected with the output terminal of described speed regulating control unit 200, the other end and electric capacity C2(second electric capacity of resistance R6) one end be together connected with the control pole of described bidirectional triode thyristor, the other end of electric capacity C2 and the second plate of bidirectional triode thyristor together ground connection.
Inductance L 1(first inductance) one end be connected with the first anode of bidirectional triode thyristor, the other end and electric capacity C3(the 3rd electric capacity of inductance L 1) one end be together connected with a lighting outlet of motor, the other end and resistance R7(the 7th resistance of electric capacity C3) one end be connected, the other end ground connection of resistance R7.
In load motor unit 400, motor is in parallel with electric capacity C7, and electric capacity C7 is electric motor starting electric capacity.
In the present embodiment, also form overcurrent protection unit by electric capacity C8, C9 and inductance L 2, overcurrent protection is carried out to circuit.The circuit of this overcurrent protection unit is custom circuit in prior art.
Adopt foregoing circuit, number of conductors needed for motor reduces, and the preparation process of motor simplifies, and saves manufacture cost; In addition, electric fan of the present invention can realize the continuous speed adjustment from minimum speed to maximum speed, and speed governing is no longer limited by gear, adds the flexibility of speed governing.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (9)
1. an electric fan, it is characterized in that, described electric fan comprises: generate the lock-out pulse generating unit of line lock pulse, postpone the speed regulating control unit of power supply lock-out pulse according to the rotating speed arranged, comprise the rotating speed driver element of bidirectional triode thyristor and comprise the load motor unit of motor
The output terminal of lock-out pulse generating unit is connected with the input end of speed regulating control unit,
The output terminal of speed regulating control unit is connected with the control pole of bidirectional triode thyristor,
The first anode and motor lighting outlet of bidirectional triode thyristor is connected, the second plate ground connection of bidirectional triode thyristor,
Another root lighting outlet of motor is connected with the live wire of ac power supply;
Wherein, described lock-out pulse generating unit comprises four diodes, two triodes and four resistance,
The negative electrode of the first diode is together connected with one end of the first resistance with the anode of the second diode, and the other end of the first resistance is connected with the live wire of ac power supply, and the anode of the first diode is together connected with the base stage of the first triode with the anode of the 3rd diode;
The negative electrode of the second diode is together connected with the emitter of the first triode with the negative electrode of the 4th diode, the anode of the 4th diode and the negative electrode together ground connection of the 3rd diode;
The collector electrode of the first triode is connected with one end of the second resistance, the other end of the second resistance is together connected with one end of the 3rd resistance with the base stage of the second triode, and the other end of the 3rd resistance is together connected with DC electrical source low voltage terminal with the emitter of the second triode;
The collector electrode of the second triode is together connected with the input end of speed regulating control unit with one end of the 4th resistance, the other end ground connection of the 4th resistance.
2. electric fan according to claim 1, is characterized in that,
Described lock-out pulse generating unit also comprises: the 5th resistance,
One end of 5th resistance is connected with the base stage of the first triode, and the other end of the 5th resistance is connected with the emitter of the first triode.
3. electric fan according to claim 2, is characterized in that,
Described lock-out pulse generating unit also comprises: the first electric capacity,
One end of first electric capacity is connected with the base stage of the first triode, and the other end of the first electric capacity is connected with the emitter of the first triode.
4. the electric fan according to claim 1,2 or 3, is characterized in that,
Described rotary speed controling unit also comprises the 6th resistance, the 7th resistance, the second electric capacity and the 3rd electric capacity,
One end of 6th resistance is connected with the output terminal of described speed regulating control unit, the other end of the 6th resistance is together connected with the control pole of described bidirectional triode thyristor with one end of the second electric capacity, the other end of the second electric capacity and the second plate together ground connection of described bidirectional triode thyristor;
The first anode of described bidirectional triode thyristor is together connected with a lighting outlet of described motor with one end of the 3rd electric capacity, and the other end of the 3rd electric capacity is connected with one end of the 7th resistance, the other end ground connection of the 7th resistance.
5. electric fan according to claim 4, is characterized in that,
Described rotary speed controling unit also comprises the first inductance,
One end of first inductance is connected with the first anode of described bidirectional triode thyristor, and the other end of the first inductance is together connected with a lighting outlet of described motor with one end of the 3rd electric capacity.
6. the electric fan according to claim 1,2 or 3, is characterized in that,
Described load motor unit also comprises: the 4th electric capacity,
4th electric capacity two ends are connected respectively with motor internal winding two ends.
7. electric fan according to claim 5, is characterized in that,
Described load motor unit also comprises: the 4th electric capacity,
4th electric capacity two ends are connected respectively with motor internal winding two ends.
8. the electric fan according to claim 1,2 or 3, is characterized in that,
Described speed regulating control unit comprises: microcontroller;
The output terminal of lock-out pulse generating unit is connected with the input end of microcontroller,
The output terminal of microcontroller is connected with the control pole of bidirectional triode thyristor.
9. electric fan according to claim 8, is characterized in that,
Described microcontroller and external control devices wireless connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322494.6A CN102852844B (en) | 2012-09-03 | 2012-09-03 | Electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322494.6A CN102852844B (en) | 2012-09-03 | 2012-09-03 | Electric fan |
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| CN102852844A CN102852844A (en) | 2013-01-02 |
| CN102852844B true CN102852844B (en) | 2015-04-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206729U (en) * | 1986-09-06 | 1987-11-07 | 陶小京 | Governor of electric fan |
| CN2093256U (en) * | 1990-12-16 | 1992-01-15 | 浙江省丽水地区计算机技术研究所 | Stepless speed regulation device for electric fan |
| CN101265916A (en) * | 2008-05-12 | 2008-09-17 | 中南大学 | Electric fan speed governing control system and method |
| US8093850B2 (en) * | 2009-09-18 | 2012-01-10 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Fan control system |
| CN202867296U (en) * | 2012-09-03 | 2013-04-10 | 格力电器（中山）小家电制造有限公司 | Electric fan |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3181554B2 (en) * | 1998-07-16 | 2001-07-03 | 三菱電機株式会社 | Air conditioner |
-
2012
- 2012-09-03 CN CN201210322494.6A patent/CN102852844B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206729U (en) * | 1986-09-06 | 1987-11-07 | 陶小京 | Governor of electric fan |
| CN2093256U (en) * | 1990-12-16 | 1992-01-15 | 浙江省丽水地区计算机技术研究所 | Stepless speed regulation device for electric fan |
| CN101265916A (en) * | 2008-05-12 | 2008-09-17 | 中南大学 | Electric fan speed governing control system and method |
| US8093850B2 (en) * | 2009-09-18 | 2012-01-10 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Fan control system |
| CN202867296U (en) * | 2012-09-03 | 2013-04-10 | 格力电器（中山）小家电制造有限公司 | Electric fan |
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