CN211174721U - Control circuit of constant-air-volume brushless electric hair drier - Google Patents
Control circuit of constant-air-volume brushless electric hair drier Download PDFInfo
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- CN211174721U CN211174721U CN201921553495.5U CN201921553495U CN211174721U CN 211174721 U CN211174721 U CN 211174721U CN 201921553495 U CN201921553495 U CN 201921553495U CN 211174721 U CN211174721 U CN 211174721U
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- air volume
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- wind
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Abstract
The utility model relates to a control circuit of brushless hairdryer of constant air volume, it includes motor amount of wind sampling part, motor amount of wind control output part and brushless motor body, wherein, this motor amount of wind sampling part is connected with this motor amount of wind control output part, this motor amount of wind control output part is connected with this brushless motor body, this motor amount of wind sampling part detects when the motor speed and the power variation of hairdryer lead to the amount of wind change, data transmission to this motor amount of wind control output part that detects the amount of wind, control module carries out the amount of wind calculation, the electric current that becomes vector synthesis at last is exported this brushless motor body and is carried out complete constant air volume control.
Description
Technical Field
The utility model relates to a control circuit especially indicates a control circuit who uses in brushless hairdryer.
Background
As is well known, traditional hairdryer is in the use, and the unstable change of air outlet amount of wind can be neglected, can cause uncomfortable experience to its user, and it is great to being blown the change that the object leads to the temperature because of the amount of wind inequality, the quilt that causes is blown the object injury to motor life-span output adverse effect. The common electric hair drier has no functions of air quantity detection and air quantity calculation, and can not effectively control the motor. The brushless motor can carry out vector control and is suitable for air volume control. The air quantity control needs devices such as an air quantity sensor and the like, occupies large space and is not suitable for being used in the air blower. In the prior art, a circuit which can be suitable for controlling the air volume in the brushless electric hair drier does not exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical scheme who adopts does: a control circuit of a constant-air-volume brushless electric hair drier comprises a motor air volume sampling part, a motor air volume control output part and a brushless motor body, wherein the motor air volume sampling part is connected with the motor air volume control output part, the motor air volume control output part is connected with the motor air volume control output part, and the motor air volume control output part is connected with the brushless motor body.
The motor air quantity sampling part comprises a voltage detection module, a current detection module, a speed detection module, a voltage detection filtering module, a current detection filtering module and a speed detection filtering module, wherein the voltage detection module is connected with the voltage detection filtering module, the current detection module is connected with the current detection filtering module, and the speed detection module is connected with the speed detection filtering module.
The motor air volume control output part comprises an air volume synthesis calculation module and an air volume PI control calculation module, and the air volume synthesis calculation module is connected with the air volume PI control calculation module.
The motor air quantity control output part comprises an air quantity output control module, a brushless motor vector control module and a power output module. The motor air quantity sampling part also comprises a zero-crossing signal detection module. The brushless motor body is an outer rotor 100V-310V brushless motor.
The utility model has the advantages that: the utility model discloses to prior art's not enough, provide a control circuit of brushless hairdryer of constant air volume, it can be under the operating voltage of difference and the environmental change of difference, through the application of this technique, can guarantee the temperature and the amount of wind invariant of air outlet all the time.
Drawings
Fig. 1 is a schematic block diagram of the circuit of the present invention.
Detailed Description
As shown in fig. 1, a control circuit of a constant air volume brushless electric hair drier comprises a motor air volume sampling part a, a motor air volume control output part B, a motor air volume control output part C and a brushless motor body D, wherein the motor air volume sampling part a is connected with the motor air volume control output part B, the motor air volume control output part B is connected with the motor air volume control output part C, and the motor air volume control output part C is connected with the brushless motor body D.
The motor air volume sampling part A comprises a voltage detection module 1, a current detection module 2, a speed detection module 3, a voltage detection filtering module 4, a current detection filtering module 5 and a speed detection filtering module 6, wherein the voltage detection module 1 is connected with the voltage detection filtering module 4, the current detection module 2 is connected with the current detection filtering module 5, and the speed detection module 3 is connected with the speed detection filtering module 6.
The motor air volume control output part B comprises an air volume synthesis calculation module 7 and an air volume PID control calculation module 8, wherein the air volume synthesis calculation module 7 is connected with the air volume PID control calculation module 8.
In a specific implementation, the motor air volume control output part C comprises an air volume output control module, a brushless motor vector control module and a power output module.
When the motor air volume sampling part A detects that the air volume changes caused by the change of the motor speed and the power of the electric hair drier, the data detected by the air volume is transmitted to the motor air volume control output part C, the control module carries out air volume calculation, and finally the current which becomes vector synthesis is output to the brushless motor body D for complete constant air volume control.
The utility model discloses during operation, this motor amount of wind sampling part A detects 3 through this voltage detection 1, this current detection 2, this speed, and the back filters through the filtering passageway and crosses behind the effective signal, sends this motor amount of wind control output part B to. And the air volume synthesis calculation module 7 in the motor air volume control output part B calculates the sampled signals to obtain the current air volume value. And obtaining an air volume correction vector value in an air volume PID control calculation module 8 of the motor air volume control output part B.
The motor air volume control output part C performs air volume output control on the air volume correction vector value, then synthesizes the air volume correction vector value with the brushless motor vector control, finally completes the motor air volume control output part C on the power output part by controlling a corresponding power device, and finally forms a rotating magnetic field on the brushless motor body D to drive the motor to work and output the controlled air volume.
In specific implementation, the motor air volume sampling part A further comprises a zero-crossing signal detection module.
In the specific implementation, the brushless motor body D is an outer rotor 100V-310V brushless motor.
Claims (4)
1. The utility model provides a control circuit of brushless hairdryer of constant air volume which characterized in that: comprises a motor air volume sampling part, a motor air volume control output part and a brushless motor body,
wherein the motor air volume sampling part is connected with the motor air volume control output part, the motor air volume control output part is connected with the brushless motor body,
the motor air quantity sampling part comprises a voltage detection module, a current detection module, a speed detection module, a voltage detection filtering module, a current detection filtering module and a speed detection filtering module,
wherein the voltage detection module is connected with the voltage detection filter module, the current detection module is connected with the current detection filter module, the speed detection module is connected with the speed detection filter module,
the motor air volume control output part comprises an air volume synthesis calculation module and an air volume PI control calculation module, and the air volume synthesis calculation module is connected with the air volume PI control calculation module.
2. The control circuit of a constant air volume brushless hair dryer as claimed in claim 1, wherein: the motor air quantity control output part comprises an air quantity output control module, a brushless motor vector control module and a power output module.
3. The control circuit of a constant air volume brushless hair dryer as claimed in claim 1, wherein: the motor air quantity sampling part also comprises a zero-crossing signal detection module.
4. The control circuit of a constant air volume brushless hair dryer as claimed in claim 1, wherein: the brushless motor body is an outer rotor 100V-310V brushless motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921553495.5U CN211174721U (en) | 2019-09-18 | 2019-09-18 | Control circuit of constant-air-volume brushless electric hair drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921553495.5U CN211174721U (en) | 2019-09-18 | 2019-09-18 | Control circuit of constant-air-volume brushless electric hair drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211174721U true CN211174721U (en) | 2020-08-04 |
Family
ID=71805906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921553495.5U Active CN211174721U (en) | 2019-09-18 | 2019-09-18 | Control circuit of constant-air-volume brushless electric hair drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211174721U (en) |
-
2019
- 2019-09-18 CN CN201921553495.5U patent/CN211174721U/en active Active
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