CN201398600Y - Electric air blower adjusting the air quantity through PWM power supply - Google Patents
Electric air blower adjusting the air quantity through PWM power supply Download PDFInfo
- Publication number
- CN201398600Y CN201398600Y CN2009201296144U CN200920129614U CN201398600Y CN 201398600 Y CN201398600 Y CN 201398600Y CN 2009201296144 U CN2009201296144 U CN 2009201296144U CN 200920129614 U CN200920129614 U CN 200920129614U CN 201398600 Y CN201398600 Y CN 201398600Y
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- air quantity
- circuit board
- power supply
- control circuit
- hair drier
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Abstract
An electric air blower adjusting the air quantity through PWM power supply comprises an outer shell (1), a heater (2), an electromotor (3), a mounting board (4) of the electromotor, a fan impeller (5), a control circuit board (6) and a switch (8), wherein the electromotor (3) is an outer rotor direct current brushless electromotor, a winding wire led out from the electromotor (3) and a rotor location sensor are connected on the control circuit board (6) through wires, a rectification filter module (61) and a pulse width adjusting module (62) are arranged on the control circuit board (6), and are used for adjusting the direct current voltage supplied to the electromotor (3) and controlling the air quantity of the electric air blower, and the pulse width adjusting module (62) further comprises a chopper (621) and a PWM control integrated circuit (622). The blower which uses the direct current brushless motor has low noise, long service life, small electromagnetic interference to environment and continuous air quality adjusting, and further has the advantages of less maintenance, high efficiency, electricity and energy saving and the like.
Description
Technical field the utility model relates to the haircut or the equipment of having a shave, and relates in particular to hair drier, particularly relates to by pulse width modulation (PWM) power supply control motor speed to regulate the hair drier of air quantity size.
Background technology
Hair-dryer is mainly used in hair drying and shaping, also is used for aspects such as experiment, industrial production, medical treatment or art designing and does local desiccation, heating and physical treatment, and its main body is motor and heater.Hair-dryer is by Motor Drive impeller of rotor rotation air blast.When impeller rotated, air sucked from air inlet, and the air-flow of Xing Chenging is blown out by mouth before the air duct more thus.When air passed through, as if the heater heating power that is contained in the tuyere, what blow out was exactly hot blast; Do not make its heating if disconnect heating unit power, what then blow out is cold wind.
Prior art hair-dryer motor comprises three types: exchange series excitation type, exchange shaded-pole and DC brush formula.Exchange series excitation type and DC brush formula motor and all adopt the mechanical switching device, the commutation noise is big, and the electromagnetic radiation that commutation spark produces has than strong jamming telecommunication apparatus, adds that carbon brush weares and teares easily, and its life-span has only more than 1,000 hour usually.And the motor noise of shaded-pole is little, the life-span is long, can not cause interference to telecommunication apparatus, but that its shortcoming is a rotating speed is low, and startability is poor, and weight is also bigger.In addition, also because there is the problem of power factor in ac motor, cause its gross efficiency low, power consumption is big.
Summary of the invention
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of hair drier by PWM power supply adjusting air quantity size is provided, and solution hair-dryer noise is big, the life-span is short, energy consumption is high reaches problems such as environment generation interference; And can regulate the air quantity size easily by pulse width modulation (PWM) stepless speed regulation.
The realization the technical solution of the utility model is: design a kind of hair drier by PWM power supply adjusting air quantity size, comprise shell, heater, motor and installing plate thereof, blast fan, and control circuit board and switch, especially described motor is the outer rotor DC Brushless Motor, the winding wire and the rotor-position sensor line of being drawn by this motor are connected on the control circuit board, rectification filtering module and pulse width modulation module are arranged on this control circuit board, be used to regulate the DC voltage of supplying with described motor, to control the air quantity of described hair drier.
Compared with prior art, the utlity model has following beneficial effect: dc brushless motor is avoided the noise and the strong electromagnetic of mechanical commutation generation by the electronic switch commutation; Described dc brushless motor can be realized infinitely variable speeds by the pulse width modulation (PWM) power supply, obtains continuously adjustable air quantity.The moment that adds outer-rotor structure is bigger, can drive heavier load.Simultaneously, dc brushless motor has the efficient height, and the life-span is long, the advantage of easy care, therefore, used the hair-dryer noise of dc brushless motor little, the life-span is long, electromagnetic interference to environment is little, and air quantity is regulated continuously, and also has advantages such as few maintenance, efficient height and power and energy saving.
Description of drawings
Fig. 1 is the hair drier orthographic projection complete section structural representation of the utility model by PWM power supply adjusting air quantity size;
Fig. 2 is the circuit connection diagram of described hair drier;
Fig. 3 is an outer rotor dc brushless motor sectional structure schematic diagram;
Fig. 4 is the control principle figure that the PWM power supply is regulated;
The specific embodiment is described in further detail below in conjunction with the preferred embodiment shown in the accompanying drawing.
Shown in Fig. 1～4, the utility model comprises shell 1, heater 2, motor 3, installing plate 4, blast fan 5, control circuit board 6 and switch 8 by the hair drier of PWM power supply adjusting air quantity size; Described motor 3 is outer rotor DC Brushless Motor, the winding wire and the rotor-position sensor line of being drawn by this motor 3 are connected on the control circuit board 6, rectification filtering module 61 and pulse width modulation module 62 are arranged on this control circuit board 6, be used to regulate the DC voltage of supplying with described motor 3, to control the air quantity of described hair drier.Described outer rotor DC Brushless Motor comprises outer rotor 9, magnet ring 10, inner stator 11 and rotor-position sensor and circuit board 12 thereof, magnet ring 10 is bonded in the inner surface of outer rotor 9, each winding of inner stator 11 and the rotor-position sensor and the circuit board 12 thereof that are installed on the electric motor end cap are electrically connected with control circuit board 6 respectively, magnet ring 10 is permanent magnets, comprise high-carbon steel, strontium or barium ferrite, alnico alloy and Nd Fe B alloys, inner stator 11 windings adopt 4～12 extremely single-phase windings.Described pulse width modulation module 62 comprises chopper 621 and pwm control circuit 622.Described switch 8 comprises cold/hot blast selector switch 81 and air quantity setting knob 82.
The hair drier course of work is as follows: switch 8 comprises cold/hot blast selector switch 81 and air quantity setting knob 82, and cold/hot blast selector switch 81 is connected with heater 2 and is electrically connected with control circuit board 6, and control is opened/broken hair hot body 2; Air quantity setting knob 82 is electrically connected control and opens/power machine with control circuit board 6, and can regulate the speed of service of motor 3 continuously; Figure 3 shows that the structure of the external-rotor-type direct current brushless electric machine of present embodiment, the position sensor on rotor-position sensor and the circuit board 12 thereof uses hall device to detect the position signalling of magnet ring 10.Respectively should being electrically connected with control circuit board 6 by lead-in wire of position sensor and inner stator 11; When the winding of inner stator 11 is switched on, the magnetic field that produces and the magnetic field interaction of outer rotor 9 inner surface magnet rings 10 produce torque, drive outer rotor 9 rotations, convert the signal of telecommunication to and export to control circuit board 6 by being installed in position signalling that hall device on rotor-position sensor and the circuit board 12 thereof will detect magnet ring 10 again, by its control electronic switch circuit, thereby the winding that makes inner stator 11 is by a graded conducting, and phase current is along with the change in location commutation of outer rotor 9.
Power line 7 connects the 220V AC power, alternating electromotive force is transformed to direct current power through rectification filtering module 61 and sends into pulse width modulation module 62, and the air quantity setting knob 82 control impuls width adjusting modules 62 that are electrically connected with control circuit board 6 are regulated output dc voltage and carried out motor speed control.Described motor 3 drives fan wheel 5 are rotated, and wind is sucked from air inlet, and the air-flow of formation is blown out by air outlet through heater 2.Cold/hot blast selector switch 81 is selected cold or hot blast, adjusts the air quantity size by air quantity setting knob 82, and can regulate air quantity continuously.
According to different application scenarios, the winding of the inner stator 11 of dc brushless motor 3 can also adopt polyphase windings in the utility model, and simultaneously, the utility model can also be used for air pump and similar occasion.
Claims (7)
1. hair drier of regulating the air quantity size by PWM power supply, comprise shell (1), heater (2), motor (3) and installing plate (4) thereof, blast fan (5), and control circuit board (6) and switch (8), it is characterized in that: described motor (3) is the outer rotor DC Brushless Motor, the winding wire and the rotor-position sensor line of being drawn by this motor (3) are connected on the control circuit board (6), rectification filtering module (61) and pulse width modulation module (62) are arranged on this control circuit board (6), be used for regulating the DC voltage of supplying with described motor (3), to control the air quantity of described hair drier.
2. the hair drier by PWM power supply adjusting air quantity size according to claim 1, it is characterized in that: described motor (3) comprises outer rotor (9), magnet ring (10), inner stator (11) and rotor-position sensor and circuit board (12) thereof; Described magnet ring (10) is bonded in the inner surface of outer rotor (9), and each winding of inner stator (11) and the rotor-position sensor and the circuit board (12) thereof that are installed on the electric motor end cap are electrically connected with control circuit board (6) respectively.
3. the hair drier by PWM power supply adjusting air quantity size according to claim 1, it is characterized in that: described pulse width modulation module (62) comprises chopper (621) and pwm control circuit (622).
4. the hair drier by PWM power supply adjusting air quantity size according to claim 1, it is characterized in that: described switch (8) comprises cold/hot blast selector switch (81) and air quantity setting knob (82).
5. the hair drier by PWM power supply adjusting air quantity size according to claim 2, it is characterized in that: described magnet ring (10) is a permanent magnet.
6. the hair drier by PWM power supply adjusting air quantity size according to claim 5, it is characterized in that: described permanent magnet is high-carbon steel, strontium or barium ferrite, alnico alloy or Nd Fe B alloys.
7. the hair drier by PWM power supply adjusting air quantity size according to claim 2, it is characterized in that: described inner stator (11) winding adopts 4～12 extremely single-phase winding or polyphase windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201296144U CN201398600Y (en) | 2009-01-19 | 2009-01-19 | Electric air blower adjusting the air quantity through PWM power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201296144U CN201398600Y (en) | 2009-01-19 | 2009-01-19 | Electric air blower adjusting the air quantity through PWM power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201398600Y true CN201398600Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201296144U Expired - Fee Related CN201398600Y (en) | 2009-01-19 | 2009-01-19 | Electric air blower adjusting the air quantity through PWM power supply |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761499A (en) * | 2010-03-02 | 2010-06-30 | 美的集团有限公司 | Brushless direct current fan and control method thereof |
| WO2012059699A1 (en) * | 2010-11-05 | 2012-05-10 | Velecta Paramount Sa | Light, efficient hair dryer |
| CN102577042A (en) * | 2010-03-11 | 2012-07-11 | Jmw有限公司 | BLDC motor for a hairdryer |
| CN104273917A (en) * | 2013-07-05 | 2015-01-14 | 戴森技术有限公司 | Hand held appliance |
| CN108851462A (en) * | 2017-05-09 | 2018-11-23 | 深圳市物种起源科技有限公司 | Hand-held hair dryer |
| CN109870962A (en) * | 2019-04-08 | 2019-06-11 | 深圳市搏世通用科技开发有限公司 | A kind of control system and its control method of hair dryer |
| CN113286407A (en) * | 2021-04-02 | 2021-08-20 | 格力电器(南京)有限公司 | Ion fan control device and ion fan |
| CN113357179A (en) * | 2020-05-28 | 2021-09-07 | 株洲中车时代电气股份有限公司 | Draught fan stepless speed regulation circuit based on RC, draught fan and speed regulation method |
-
2009
- 2009-01-19 CN CN2009201296144U patent/CN201398600Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761499A (en) * | 2010-03-02 | 2010-06-30 | 美的集团有限公司 | Brushless direct current fan and control method thereof |
| CN102577042A (en) * | 2010-03-11 | 2012-07-11 | Jmw有限公司 | BLDC motor for a hairdryer |
| WO2012059699A1 (en) * | 2010-11-05 | 2012-05-10 | Velecta Paramount Sa | Light, efficient hair dryer |
| CN103228171A (en) * | 2010-11-05 | 2013-07-31 | 威莱克塔派拉蒙公司 | Light, efficient hair dryer |
| CN103228171B (en) * | 2010-11-05 | 2016-11-09 | 威莱克塔派拉蒙公司 | The hair-dryer of efficient and light weight |
| KR101899872B1 (en) | 2010-11-05 | 2018-11-05 | 벨렉타 패러마운트 에스아에스 | Light, efficient hair dryer |
| CN104273917A (en) * | 2013-07-05 | 2015-01-14 | 戴森技术有限公司 | Hand held appliance |
| CN104273917B (en) * | 2013-07-05 | 2018-10-09 | 戴森技术有限公司 | Hand-held instruments |
| CN108851462A (en) * | 2017-05-09 | 2018-11-23 | 深圳市物种起源科技有限公司 | Hand-held hair dryer |
| CN109870962A (en) * | 2019-04-08 | 2019-06-11 | 深圳市搏世通用科技开发有限公司 | A kind of control system and its control method of hair dryer |
| CN113357179A (en) * | 2020-05-28 | 2021-09-07 | 株洲中车时代电气股份有限公司 | Draught fan stepless speed regulation circuit based on RC, draught fan and speed regulation method |
| CN113286407A (en) * | 2021-04-02 | 2021-08-20 | 格力电器(南京)有限公司 | Ion fan control device and ion fan |
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| CP03 | Change of name, title or address |
Address after: 518104 Guangdong city of Shenzhen province Baoan District manhole Street manhole West Maan Shan Industrial Park, Tai Tong Industrial Zone No. 1, No. 2, No. 3 Patentee after: Dongming Shenzhen electromechanical Limited by Share Ltd Address before: 518104 Guangdong city of Shenzhen Province in Western Baoan District manhole Maan Shan Industrial Park Ditang Industrial Zone No. 2 Patentee before: Dongming Mechanical and Electrical (Shenzhen) Co., Ltd. |
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Effective date of registration: 20180613 Granted publication date: 20100210 |
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Date of cancellation: 20190119 Granted publication date: 20100210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20180119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |