CN202772826U - Brushless direct-current motor type air blower control circuit - Google Patents
Brushless direct-current motor type air blower control circuit Download PDFInfo
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- CN202772826U CN202772826U CN2012204342288U CN201220434228U CN202772826U CN 202772826 U CN202772826 U CN 202772826U CN 2012204342288 U CN2012204342288 U CN 2012204342288U CN 201220434228 U CN201220434228 U CN 201220434228U CN 202772826 U CN202772826 U CN 202772826U
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- control circuit
- brushless motor
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- rectifier
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Abstract
The utility model relates to a brushless direct-current motor type air blower control circuit. The brushless direct-current motor type air blower control circuit comprises a power module, a rotating speed controller and a brushless direct-current motor. The rotating speed controller is electrically connected with the power module and the brushless direct-current motor separately, the power module is used to perform the voltage reduction operation and the rectification operation on an alternating-current power supply and then provide a direct-current voltage required by the rotating speed controller, and a stepless or multistage rotating speed control signal is sent by the rotating speed controller to control the rotating speed of the brushless direct-current motor, thereby improving and maintaining the working efficiency of the brushless direct-current motor and solving the problem that the number of the stages of the blowing rate is limited and the problem of poor motor working efficiency with existing air blowers.
Description
Technical field
The utility model is about a kind of hair-dryer, and espespecially a kind of rotational speed governor of nothing section or multistage that uses is with the hair-dryer of the rotating speed of control dc brushless motor.
Background technology
Existing hair-dryer is to be provided with a selector switch in its fuselage, and on selector switch, be connected with respectively a half-wave rectifier and a full-wave rectifier, the output of these rectifiers then is a motor that is connected in the fuselage, position by switching selection switch is with the DC power supply of output half-wave or all-wave, make motor reach Half Speed or full-speed operation, use the air quantity that changes hair-dryer; And the built-in brush direct current motor of the many employings of the motor of known hair-dryer, the sound that produces during except the fan air blast during use, the noise that also has carbon brush and commutator friction to bring, owing to carbon brush and commutator continue the shortcoming that friction has wearing and tearing and loose contact, therefore use brush direct current motor to have friction noise, the life-span shortens or reliability is not good problem.
And existing hair-dryer such as TaiWan, China new patent are weighed " dc brushless motor hair-dryer " M341435 number, it utilizes dc brushless motor to replace brush direct current motor, friction noise and the loose contact that can reduce brush direct current motor cause the not good problem of reliability, add that its power end in dc brushless motor is connected with a filter capacitor, can reduce the ripple in the DC power supply of half-wave or full-wave rectification, but it still adopts the selector switch Switching power of syllogic, make it have the limited shortcoming of selectable air quantity hop count, moreover this DC power supply is not to continue fixing direct voltage, work so that dc brushless motor is under the operating voltage of non-efficient, and then produce the not good problem of operating efficiency.
Summary of the invention
As described in front taking off, existing dc brushless motor still adopts the selector switch Switching power, so that selectable air quantity hop count is limited, moreover this DC power supply is not to continue and fixing direct voltage, making dc brushless motor often be under the operating voltage of non-efficient works, and the not good problem of operating efficiency is arranged, therefore the utility model main purpose is providing a direct current brushless electric machine hair-dryer control circuit, power end in dc brushless motor connects rotational speed governor, carry out the adjustment of rotational speed without section or multistage, solve the existing problem that hair-dryer air quantity hop count is limited and motor working efficiency is not good.
To make aforementioned dc brushless motor hair-dryer control circuit include for reaching the technical way that aforementioned purpose takes:
One power module, it includes a mains switch, a rectifier and a diminishing coil, two inputs of this rectifier are to be connected to an AC power, this mains switch is to be serially connected between the wherein input and AC power of rectifier, and this diminishing coil is to be serially connected between another input and AC power of rectifier;
One rotational speed governor, its output that is connected to rectifier to be obtaining direct voltage, and send a speed controling signal without section or multistage;
One direct current brushless electric machine, it is connected to the output of rotational speed governor, and the speed controling signal of accepting rotational speed governor drives, to produce the corresponding rotating speed without section or multistage.
The dc brushless motor hair-dryer control circuit that utilizes aforementioned components to form, when mains switch is connected, this AC power forms electric power loop through rectifier and diminishing coil, the output of rectifier provides rotational speed governor required direct voltage, and carried out controlling without the linear rotating speed of section or multistage to drive dc brushless motor according to input signal output speed control signal by rotational speed governor, improve and keep the operating efficiency of dc brushless motor, solve the existing problem that hair-dryer air quantity hop count is limited and motor working efficiency is not good.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model the first preferred embodiment.
Fig. 2 is the circuit diagram () without the section rotational speed governor of the utility model the first preferred embodiment.
Fig. 3 is the circuit diagram (two) without the section rotational speed governor of the utility model the first preferred embodiment.
Fig. 4 is the circuit diagram of the multistage rotational speed governor of the utility model the first preferred embodiment.
Fig. 5 is the circuit block diagram of the utility model the second preferred embodiment.
Drawing reference numeral:
10 power modules, 11 mains switches
12 rectifiers, 13 diminishing coils
14 heater switch, 15 heater coils
20 rotational speed governors, 21 voltage regulation units
22 control units, 23 switch elements
30 dc brushless motors, 40 AC power
Embodiment
About the first preferred embodiment of the present utility model, see also shown in Figure 1, include a power module 10, rotating speed device 20 processed and a direct current brushless electric machine 30, the input of this power module 10 is to be connected to an outside AC power 40, the output of this power module 10 is to be connected to rotational speed governor 20,20 of this rotational speed governors are to be electrically connected to control its rotating speed with dc brushless motor 30, wherein
This power module 10 includes a mains switch 11, a rectifier 12 and a diminishing coil 13, this rectifier 12 has two inputs and two outputs, these inputs are to be connected to respectively aforesaid AC power 40, this mains switch 11 is to be serially connected between the wherein input and AC power 40 of rectifier 12, this diminishing coil 13 is to be serially connected between another input and AC power 40 of rectifier 12, these outputs of rectifier 12 (+,-) be the direct voltage of exporting after rectification; In present embodiment, this rectifier 12 is full-wave rectifiers.
This rotational speed governor 20 has two inputs and three outputs, these inputs are to be connected to the output of rectifier 12 to obtain this direct voltage, and are speed controling signals of sending dc brushless motor 30 by these outputs, see also shown in Figure 2, when these rotational speed governor 20 wishs are exported without the speed controling signal of section, make rotational speed governor 20 include a voltage regulation unit 21, one control unit 22 and three groups of switch elements 23, this control unit 22 is respectively with voltage regulation unit 21 and respectively organize switch element 23 and be electrically connected, and voltage regulation unit 21 is obtained direct voltage V by the input of rotational speed governor 20
CC, through the direct voltage V of the required low pressure of control unit 22 is provided after step-down and the voltage stabilizing
DDWith an earth terminal (GND); Each organizes the electronic switch (MOSQ3, MOSQ4 MOSQ2, MOSQ5MOSQ1, MOSQ6) that switch element 23 includes paired serial connection, and these electronic switches (MOSQ3, MOSQ4 MOSQ2, MOSQ5 MOSQ1, MOSQ6) that are connected in series in pairs consist of respectively two node (V
CCWith GND) and one be connected in series node (MA, MB, MC), two node (V
CCWith GND) input that is connected to respectively rotational speed governor 20 is to obtain direct voltage, and each tandem node (MA, MB, MC) then is connected to respectively the output (J2) of rotational speed governor 20, to provide dc brushless motor 30 required speed controling signal; This control unit 22 includes a most pin, each pin (AT, BT, CT, AB, BB, CB) is electrically connected to control its conducting or cut-off with each electronic switch MOSQ3, MOSQ4, MOSQ2, MOSQ5, MOSQ1, MOSQ6 respectively, a wherein pin (P12) of control unit 22 is to be connected to a variable resistor (R18) again, by the characteristic of variable resistor (R18) input linear voltage, make control unit 22 exportable speed controling signals without section; See also again shown in Figure 3, the another kind of mode of connection for control unit 22, a wherein pin (P12) of control unit 22 is to be connected to three diverter switches (J13, J133, J134), each connecting valve be parallel with one another and wherein an end be connected to respectively the direct voltage V of low pressure by a resistance (R31, R32, R35)
DD, another end then is by another resistance (R36) ground connection, by switching each diverter switch, provides different input voltages, makes control unit 22 exportable speed controling signals without section.
See also shown in Figure 4, when these rotational speed governor 20 wishs are exported the speed controling signal of multistage, that wherein three pins (P14, P13, P12) with the control unit 22 in the rotational speed governor 20 are connected to respectively one and switch switch (J13, J133, J134), the another end of each diverter switch then is to be connected to earth terminal, by switching each diverter switch (J13, J133, J134), make control unit 22 export at least three sections speed controling signal (SPEED1, SPEED2, SPEED3), make the speed controling signal of control unit 22 exportable multistages.
This dc brushless motor 30 is each output that is connected to rotational speed governor 20, is subjected to driving and rotating speed corresponding to generation without section or multistage speed controling signal of rotational speed governor 20 outputs.
When mains switch 11 was connected, this AC power 40 was after rectifier 12 and diminishing coil 13 form electric power loops, and the output of rectifier 12 can be exported the direct voltage through over commutation, provided rotational speed governor 20 required direct voltage (V
CC), make rotational speed governor 20 carry out controlling without the rotating speed of section linearity or multistage to dc brushless motor 30, to improve and to keep the efficient of dc brushless motor 30, solve the existing problem that hair-dryer air quantity hop count is limited and motor working efficiency is not good.
About the second preferred embodiment of the present utility model, see also shown in Figure 5, itself and the first preferred embodiment are roughly the same, different is to be provided with a heater switch 14 and a heater coil 15 in the power module 10, drive a fan (not shown) by dc brushless motor 30, the air quantity of its generation is blown over heater coil 15 so that hot blast output to be provided, as shown in the figure, a wherein end of this heater switch 14 is to be connected to mains switch 11, the another end of heater switch 14 is to join with heater coil 15, and the another end of heater coil 15 then is to be connected with AC power 40; When aforementioned mains switch 11 is connected, the wind that dc brushless motor 30 drive fans blow out is the cool breeze without heater coil 15 heating, when aforementioned mains switch 11 is connected simultaneously with heater switch 14, the wind that dc brushless motor 30 drive fans blow out can form hot blast through heater coil 15 heating, undertaken controlling its air quantity without the rotating speed of section linearity or multistage by dc brushless motor 30, the temperature of the larger hot blast that blows out of air quantity can reduce, and work as the air quantity minimizing temperature of the hot blast that blows out can be improved, improve user's convenience.
Claims (7)
1. a dc brushless motor hair-dryer control circuit is characterized in that, described dc brushless motor hair-dryer control circuit comprises:
One power module, it includes a mains switch, a rectifier and a diminishing coil, two inputs of described rectifier are to be connected to an AC power, described mains switch is to be serially connected between the wherein input and AC power of rectifier, and described diminishing coil is to be serially connected between another input and AC power of rectifier;
One rotational speed governor, the output that is connected to rectifier to be obtaining direct voltage, and send a speed controling signal without section or multistage;
One direct current brushless electric machine is connected to the output of rotational speed governor, and the speed controling signal of accepting rotational speed governor drives, to produce the corresponding rotating speed without section or multistage.
2. dc brushless motor hair-dryer control circuit as claimed in claim 1, it is characterized in that, described power module further is provided with a heater switch and a heater coil, a wherein end of described heater switch is to be connected to mains switch, the other end of described heater switch is that the end with described heater coil joins, and the other end of described heater coil then is to be connected with AC power.
3. dc brushless motor hair-dryer control circuit as claimed in claim 2 is characterized in that, described rectifier is a full-wave rectifier.
4. such as each described dc brushless motor hair-dryer control circuit in the claims 1 to 3, it is characterized in that, described rotational speed governor includes a voltage regulation unit, a control unit and three groups of switch elements, described control unit is respectively with voltage regulation unit and respectively organize switch element and be electrically connected, each organizes the electronic switch that switch element includes paired serial connection, and described electronic switch is the speed controling signal of output speed controller.
5. dc brushless motor hair-dryer control circuit as claimed in claim 4 is characterized in that, described control unit is to be electrically connected with a variable resistor, makes control unit output without the speed controling signal of section.
6. dc brushless motor hair-dryer control circuit as claimed in claim 4 is characterized in that, described control unit is to be electrically connected with three diverter switches respectively, makes the speed controling signal of control unit output multistage.
7. dc brushless motor hair-dryer control circuit as claimed in claim 4, it is characterized in that, described control unit is to be electrically connected with three diverter switches respectively, each connecting valve be parallel with one another and wherein an end be connected to direct voltage by a resistance respectively, another end then is by another grounding through resistance, makes control unit output without the speed controling signal of section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204342288U CN202772826U (en) | 2012-08-29 | 2012-08-29 | Brushless direct-current motor type air blower control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204342288U CN202772826U (en) | 2012-08-29 | 2012-08-29 | Brushless direct-current motor type air blower control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772826U true CN202772826U (en) | 2013-03-06 |
Family
ID=47779368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204342288U Expired - Fee Related CN202772826U (en) | 2012-08-29 | 2012-08-29 | Brushless direct-current motor type air blower control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939714A (en) * | 2016-10-12 | 2018-04-20 | 建准电机工业股份有限公司 | Blower and fan rotating speed control module thereof |
-
2012
- 2012-08-29 CN CN2012204342288U patent/CN202772826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939714A (en) * | 2016-10-12 | 2018-04-20 | 建准电机工业股份有限公司 | Blower and fan rotating speed control module thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20150829 |
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| EXPY | Termination of patent right or utility model |