CN215521347U - Stepless speed regulator for ceiling fan - Google Patents
Stepless speed regulator for ceiling fan Download PDFInfo
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- CN215521347U CN215521347U CN202120111859.5U CN202120111859U CN215521347U CN 215521347 U CN215521347 U CN 215521347U CN 202120111859 U CN202120111859 U CN 202120111859U CN 215521347 U CN215521347 U CN 215521347U
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- resistor
- capacitor
- bidirectional
- stepless speed
- potentiometer
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 42
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a stepless speed regulation device for a ceiling fan, which comprises a fan motor, a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a potentiometer, a bidirectional trigger diode, a bidirectional thyristor and an inductor, wherein the first capacitor, the first resistor and the inductor are connected in series to form a compensation circuit, the output ends of the inductor and the first resistor are connected with the bidirectional thyristor, the bidirectional thyristor is connected with the bidirectional trigger diode, the second resistor, the potentiometer, the third resistor and the second capacitor, and the output end of the first resistor is connected with the second capacitor. The stepless speed regulating device of the ceiling fan adjusts the resistance value in the circuit by rotating the potentiometer in the speed regulating circuit, changes the resistance value, namely changes the size of the trigger angle of the bidirectional thyristor, so that the working voltage at two ends of the motor winding is changed, thereby achieving the aims of stepless speed regulation and air quantity regulation.
Description
Technical Field
The utility model relates to the technical field of ceiling fans, in particular to a stepless speed regulating device of a ceiling fan.
Background
The stepless speed regulation of the existing ceiling fan is generally as follows: the 'potentiometer' with variable resistance value adjusts the resistance value in the circuit, changes the size of the trigger angle of the bidirectional thyristor, and changes the working voltage at two ends of the motor winding, thereby changing the wind speed and achieving the purpose of adjusting the wind quantity. The stepless speed regulation in the form of wave interruption causes serious change of sinusoidal waveform of current due to the wave interruption, causes serious electromagnetic noise of the fan, and simultaneously generates impact on parts of the fan, particularly starting capacitance of a motor, causes capacitance damage, thereby reducing the service life of the fan.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a ceiling fan stepless speed regulation device, which adjusts the resistance value in a circuit by rotating a potentiometer in a speed regulation circuit, changes the resistance value, namely changes the size of a trigger angle of a bidirectional thyristor, so that the working voltage at two ends of a motor winding is changed along with the change of the resistance value, and the aims of stepless speed regulation and air volume regulation are fulfilled.
In order to achieve the purpose, the utility model provides the following technical scheme: a stepless speed regulation device for a ceiling fan comprises a fan motor, a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a potentiometer, a bidirectional trigger diode, bidirectional thyristors and an inductor, wherein the first capacitor, the first resistor and the inductor are connected in series to form a compensation circuit, the output ends of the inductor and the first resistor are connected with the bidirectional thyristors, the bidirectional thyristors are connected with the bidirectional trigger diode, the second resistor, the potentiometer, the third resistor and the second capacitor, and the output end of the first resistor is connected with the second capacitor;
the bidirectional trigger diode is connected with the fan motor through a second resistor, a potentiometer, a third resistor, a second capacitor and a first resistor.
Furthermore, the input end of the compensation circuit is connected with a power supply, and a switch is arranged between the power supply and the compensation circuit.
Further, the potentiometer is connected with a third resistor.
Further, the second capacitor is connected with the bidirectional controllable silicon through a second resistor and a bidirectional trigger diode.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model forms a compensating circuit by adding the first capacitor, the first resistor and the inductor, the compensating circuit can provide a weak compensating current instantly, continues the waveform, greatly reduces the pause, pause and stop phenomena, enables the silicon controlled rectifier to play a role of buffering the impact of the chopped wave on the parts of the fan (particularly the starting capacitor of the motor), protects the parts from being damaged, and ensures the normal service life of the fan; and under the state that the silicon controlled rectifier blocks the waveform, a weak current is provided instantly to play the role of continuing the compensating current, so that the original waveform which has become the interrupted wave can be continued, and the noise is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: m, a fan motor; c1, a first capacitor; c2, a capacitor II; r1, resistance one; r2 and a second resistor; r3 and a resistor III; RP, a potentiometer; VD, a bidirectional trigger diode; VTH, bidirectional thyristor; l, an inductor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a ceiling fan stepless speed regulation device comprises a fan motor M, a first capacitor C1, a second capacitor C2, a first resistor R1, a second resistor R2, a third resistor R3, a potentiometer RP, a diac VD, a triac VTH and an inductor L, wherein the first capacitor C1, the first resistor R1 and the inductor L are connected in series to form a compensation circuit, the output end of the inductor L and the first resistor R1 is connected with the triac VTH, the triac VTH is connected with the diac VD, the second resistor R2, the potentiometer RP, the third resistor R3 and the second capacitor C2, and the output end of the first resistor R1 is connected with the second capacitor C2;
the bidirectional trigger diode VD is connected with the fan motor M through a second resistor R2, a potentiometer RP, a third resistor R3, a second capacitor C2 and a first resistor R1.
Specifically, the input end of the compensation circuit is connected with a power supply, and a switch is arranged between the power supply and the compensation circuit.
Specifically, the potentiometer RP is connected to a resistor tri R3.
Specifically, the capacitor two C2 is connected with the bidirectional thyristor VTH through the resistor two R2 and the bidirectional trigger diode VD.
When the bidirectional thyristor VTH is in a blocking state, and a current sine wave appears in a wave-breaking state, a capacitor C1, a resistor R1 and an inductor L in a compensation circuit work immediately to provide a weak compensation current instantly, so that a continuous sine wave waveform is maintained, the impact of the bidirectional thyristor VTH on electric parts of the fan due to wave breaking is relieved, the electric parts are protected from being damaged, noise generated due to wave breaking is eliminated, and the fan is ensured to work stably and normally for a long time.
The compensation circuit consisting of a capacitor C1, a resistor R1 and an inductor L is added on the basis of the original stepless speed regulation circuit, the bidirectional thyristor VTH is used as a switch of the fan, the controllable characteristic of the bidirectional thyristor VTH is utilized, and the control angle of the bidirectional thyristor VTH is changed to change the output voltage of the bidirectional thyristor VTH, so that the aim of stepless regulation of the rotating speed and the air volume of the fan is fulfilled;
at the initial part of each half cycle of the power supply voltage, the bidirectional thyristor VTH is in a blocking state, the power supply voltage charges the capacitor II C2 through the potentiometer RP and the resistor I R1, when the charging voltage on the capacitor II C2 reaches the trigger voltage of the bidirectional trigger diode VD, the bidirectional trigger diode VD is conducted, the capacitor II C2 discharges to the gate pole of the bidirectional thyristor VTH through the bidirectional trigger diode VD, so that the bidirectional thyristor VTH is conducted, current flows through a motor winding, the charging time constant of the capacitor II C2 can be adjusted by adjusting the resistance value of the potentiometer RP, the control angle of the bidirectional thyristor VTH is also adjusted, the larger the potentiometer RP is, the larger the control angle of the bidirectional thyristor VTH is, the smaller the voltage on the load fan motor M is, the rotating speed is reduced, and the stepless speed regulation of the electric fan is realized through the adjustable potentiometer RP.
Claims (4)
1. The utility model provides a ceiling fan stepless speed regulation device, includes fan motor (M), electric capacity one (C1), electric capacity two (C2), resistance one (R1), resistance two (R2), resistance three (R3), potentiometre (RP), diac (VD), bidirectional thyristor (VTH) and inductor (L), its characterized in that: the capacitor I (C1), the resistor I (R1) and the inductor L are connected in series to form a compensation circuit, the output ends of the inductor L and the resistor I (R1) are connected with a bidirectional thyristor (VTH), the bidirectional thyristor (VTH) is connected with a bidirectional trigger diode (VD), a resistor II (R2), a potentiometer (RP), a resistor III (R3) and a capacitor II (C2), and the output end of the resistor I (R1) is connected with the capacitor II (C2);
the bidirectional trigger diode (VD) is connected with the fan motor (M) through a second resistor (R2), a potentiometer (RP), a third resistor (R3), a second capacitor (C2) and a first resistor (R1).
2. The stepless speed regulating device for ceiling fans of claim 1, wherein: the input end of the compensation circuit is connected with a power supply, and a switch is arranged between the power supply and the compensation circuit.
3. The stepless speed regulating device for ceiling fans of claim 1, wherein: the potentiometer (RP) is connected with a resistor III (R3).
4. The stepless speed regulating device for ceiling fans of claim 1, wherein: and the capacitor II (C2) is connected with the bidirectional thyristor (VTH) through a resistor II (R2) and a bidirectional trigger diode (VD).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120111859.5U CN215521347U (en) | 2021-01-15 | 2021-01-15 | Stepless speed regulator for ceiling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120111859.5U CN215521347U (en) | 2021-01-15 | 2021-01-15 | Stepless speed regulator for ceiling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215521347U true CN215521347U (en) | 2022-01-14 |
Family
ID=79786981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120111859.5U Active CN215521347U (en) | 2021-01-15 | 2021-01-15 | Stepless speed regulator for ceiling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215521347U (en) |
-
2021
- 2021-01-15 CN CN202120111859.5U patent/CN215521347U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Ceiling fan stepless speed control device Effective date of registration: 20231011 Granted publication date: 20220114 Pledgee: Jiangmen Rural Commercial Bank Co.,Ltd. Huancheng Sub branch Pledgor: JIANGMEN WEILING ELECTRICAL Co.,Ltd. Registration number: Y2023980060660 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |