CN206850693U - AC single speed motor-drive circuit for air cleaning unit - Google Patents
AC single speed motor-drive circuit for air cleaning unit Download PDFInfo
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- CN206850693U CN206850693U CN201720584720.6U CN201720584720U CN206850693U CN 206850693 U CN206850693 U CN 206850693U CN 201720584720 U CN201720584720 U CN 201720584720U CN 206850693 U CN206850693 U CN 206850693U
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- Prior art keywords
- drive circuit
- power
- transformer
- motor
- resistance
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Abstract
The utility model discloses a kind of AC single speed motor-drive circuit for air cleaning unit, including AC power, power-switching circuit and transformer, the power-switching circuit is used to AC power being converted into direct current and to microprocessor power supply, the microprocessor is used for control relay drive circuit, the transformer is used to change the voltage of AC power and electrically connected with switching device, the switching device is controlled by relay drive circuit, and the voltage after change is delivered to motor by the switching device.The utility model circuit structure is simple, component is few, control unit, electronic switch, multi-tap transformer alignment circuit are used as by microprocessor, multigroup output of transformer is alternatively introduced into motor, solve the problems, such as electric machine speed regulation and motor safety can be ensured, thus with it is simple in construction, cost is low, steady performance.
Description
Technical field
It the utility model is related to a kind of motor-drive circuit, particularly a kind of AC single speed electricity for air cleaning unit
Drive circuit.
Background technology
Existing field of household appliances, many products such as air purifier, new blower fan, smoke exhaust ventilator all use AC single speed
Motor, electric machine speed regulation are widely used.Conventional electric machine speed regulation scheme is to use voltage zero-cross detection signal, utilizes software
Delays time to control turn on thyristors, its circuit structure are as shown in Figure 1.Although this method in the presence of certain technological deficiency, such as 1. because
It is inductive load for motor, the phase shift of different degrees of current lagging voltage phase can be produced during startup, then produces zero point
Drift, causes motor speed to drift about;2. drive circuit is complicated, circuit stability is not high, does not possess price advantage.
Fig. 2 gives the control circuit of another load motor, including:A pair of ac input ends, it is connected to list a pair
The ac output end of cross streams motor and a pair of ac bus that ac input end is connected with ac output end one-to-one corresponding,
Power supply master control switch is serially connected with the circuit of an ac bus therein, it is characterised in that described load motor
Control circuit also includes:The controllable electronic switch being serially connected on the circuit of an ac bus therein;Start triggering circuit,
It is the trigger signal for producing controllable electronic switch that it, which is acted on, so that controllable electronic switch is connected;Triggering keeps control circuit, and it is made
With holding controllable electronic switch on-state.But the program can only controlled motor start and stop, also need to add in addition for speed governing
Circuit is designed, causes type of drive complicated.
Utility model content
In view of the above-mentioned problems existing in the prior art, the purpose of this utility model is that providing a kind of purification of air that is used for fills
The AC single speed motor-drive circuit put.
The technical solution of the utility model is:A kind of AC single speed motor-drive circuit for air cleaning unit, bag
AC power, power-switching circuit and transformer are included, the power-switching circuit is used to AC power being converted into direct current simultaneously
To microprocessor power supply, the microprocessor is used for control relay drive circuit, and the transformer is used to change AC power
Voltage and electrically connected with switching device, the switching device is controlled by relay drive circuit, the switching device will change
Voltage afterwards is delivered to motor.
Preferably, the transformer is multi-tap transformer, and each output end of the multi-tap transformer is respectively connected with
Electronic switch, the electronic switch also electrically connect with motor, and the electronic switch drives its opening and closing by relay drive circuit.
Preferably, the transformer is provided with 5 road output voltages.
Preferably, base stage connection resistance RK1 of the relay drive circuit provided with triode QK1, the triode QK1
With resistance RK2 one end, the other end of the resistance RK1 and resistance RK2 connect the control terminal and ground terminal of microprocessor respectively, described
Triode QK1 grounded emitter, the colelctor electrode connection electronic switch K1 of the triode QK1 No. 2 binding posts, the electricity
The both ends of sub switch K1 No. 1 binding post and 2 binding posts distribution connection diode DK1.
Preferably, the triode QK1 uses 9013 type triodes, and the resistance of the resistance RK1 and resistance RK2 are respectively
4.7K and 10K, the diode DK1 use M7 type diodes.
In summary, the utility model has advantages below:
The utility model circuit structure is simple, component is few, is used as control unit, electronic switch, more by microprocessor
Tapped transformer alignment circuit, multigroup output of transformer are alternatively introduced into motor, are solved the problems, such as electric machine speed regulation and can be protected
Demonstrate,prove motor safety, therefore with it is simple in construction, cost is low, steady performance.
Brief description of the drawings
Fig. 1 is the circuit structure diagram of prior art;
Fig. 2 is the circuit structure diagram of another prior art;
Fig. 3 is the structured flowchart of the present embodiment;
Fig. 4 is that the motor of the present embodiment drives schematic diagram;
Fig. 5 is the drive circuit figure of relay.
Embodiment
The utility model is made further in detail, intactly to illustrate with reference to embodiment and accompanying drawing.
As in Figure 3-5, a kind of AC single speed motor-drive circuit for air cleaning unit, including AC power,
Power-switching circuit and transformer, the power-switching circuit are used to AC power being converted into direct current and supplied to microprocessor
Electricity, the microprocessor are used for control relay drive circuit, and the transformer is used to change the voltage of AC power and with cutting
Changing device is electrically connected, and the switching device is controlled by relay drive circuit, and the switching device conveys the voltage after change
To motor.
Especially as shown in figure 3, the transformer is multi-tap transformer, each output end of the multi-tap transformer is equal
Electronic switch is connected with, the electronic switch also electrically connects with motor, and the electronic switch drives it by relay drive circuit
Opening and closing.The transformer is provided with 5 road output voltages.
Base stage connection resistance RK1 and resistance of the relay drive circuit provided with triode QK1, the triode QK1
RK2 one end, the other end of the resistance RK1 and resistance RK2 connect the control terminal and ground terminal of microprocessor, the triode respectively
QK1 grounded emitter, the colelctor electrode connection electronic switch K1 of the triode QK1 No. 2 binding posts, the electronic switch
The both ends of K1 No. 1 binding post and 2 binding posts distribution connection diode DK1.
The triode QK1 uses 9013 type triodes, the resistance of the resistance RK1 and resistance RK2 be respectively 4.7K and
10K, the diode DK1 use M7 type diodes.
The operation principle of AC single speed unit is exactly to use the power on stator winding to produce magnetic field, and acts on rotor and formed and turned
Square, mechanical energy is converted electrical energy into, allow rotor to rotate.The control mode of switching device can be used and combine tap transformation
Device is by different control sources to motor internal, it is achieved thereby that the speed governing of motor.Specifically, transformer control single-speed motor master
Will use N number of gear control, N number of tap is drawn by Circuit Fault on Secondary Transformer, out voltage be respectively AV, BV,
CV....220V.It is also different according to the rotating speed of the different motors of output of voltage.Maximum voltage is the rated voltage of motor, is exported
Power reaches maximum, and wind speed is also maximum.As Fig. 3 illustrates a kind of motor-drive circuit figure of 5 gear, K1~K10 in figure
For electronic switch, it is controlled by microcontroller.K1~K5 difference controlled motors M1 5 grades of wind speed;K6~K10 distinguishes controlled motor
M2 5 grades of wind speed.The output example of multi-tap transformer is 40VAC, 63VAC, 110VAC, 180VAC, 220VAC in example.
The utility model above-described embodiment is only to illustrate that technical solutions of the utility model are used simultaneously, only the utility model
Technical scheme is enumerated, and is not limited to the technical solution of the utility model and its protection domain.Using equivalent technologies mean,
The improvement to the technical scheme disclosed in the utility model claims book and specification such as equivalent apparatus, which is considered to be, not to be had
Beyond the scope disclosed in the utility model claims book and specification.
Claims (5)
1. the AC single speed motor-drive circuit for air cleaning unit, it is characterised in that including AC power, Power convert
Circuit and transformer, the power-switching circuit is used to AC power being converted into direct current and to microprocessor power supply, described
Microprocessor is used for control relay drive circuit, the transformer be used for the voltage for changing AC power and with switching device electricity
Connection, the switching device are controlled by relay drive circuit, and the voltage after change is delivered to motor by the switching device.
2. it is used for the AC single speed motor-drive circuit of air cleaning unit as claimed in claim 1, it is characterised in that described
Transformer is multi-tap transformer, and each output end of the multi-tap transformer is respectively connected with electronic switch, the electronic cutting
Pass also electrically connects with motor, and the electronic switch drives its opening and closing by relay drive circuit.
3. it is used for the AC single speed motor-drive circuit of air cleaning unit as claimed in claim 2, it is characterised in that described
Transformer is provided with 5 road output voltages.
4. it is used for the AC single speed motor-drive circuit of air cleaning unit as claimed in claim 2, it is characterised in that described
Base stage connection resistance RK1 and resistance RK2 of the relay drive circuit provided with triode QK1, triode QK1 one end, institute
The other end for stating resistance RK1 and resistance RK2 connects the control terminal and ground terminal of microprocessor, the emitter stage of the triode QK1 respectively
Ground connection, the colelctor electrode connection electronic switch K1 of the triode QK1 No. 2 binding posts, No. 1 wiring of the electronic switch K1
The both ends of terminal and 2 binding posts distribution connection diode DK1.
5. it is used for the AC single speed motor-drive circuit of air cleaning unit as claimed in claim 4, it is characterised in that described
Triode QK1 uses 9013 type triodes, and the resistance of the resistance RK1 and resistance RK2 is respectively 4.7K and 10K, two pole
Pipe DK1 uses M7 type diodes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720584720.6U CN206850693U (en) | 2017-05-24 | 2017-05-24 | AC single speed motor-drive circuit for air cleaning unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720584720.6U CN206850693U (en) | 2017-05-24 | 2017-05-24 | AC single speed motor-drive circuit for air cleaning unit |
Publications (1)
Publication Number | Publication Date |
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CN206850693U true CN206850693U (en) | 2018-01-05 |
Family
ID=60795385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201720584720.6U Expired - Fee Related CN206850693U (en) | 2017-05-24 | 2017-05-24 | AC single speed motor-drive circuit for air cleaning unit |
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CN (1) | CN206850693U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109870954A (en) * | 2019-02-26 | 2019-06-11 | 南京工业职业技术学院 | A kind of fence sender unit |
-
2017
- 2017-05-24 CN CN201720584720.6U patent/CN206850693U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109870954A (en) * | 2019-02-26 | 2019-06-11 | 南京工业职业技术学院 | A kind of fence sender unit |
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Legal Events
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180524 |