CN202959231U - Electric blower with sensor-free direct current brushless motor - Google Patents
Electric blower with sensor-free direct current brushless motor Download PDFInfo
- Publication number
- CN202959231U CN202959231U CN 201220223193 CN201220223193U CN202959231U CN 202959231 U CN202959231 U CN 202959231U CN 201220223193 CN201220223193 CN 201220223193 CN 201220223193 U CN201220223193 U CN 201220223193U CN 202959231 U CN202959231 U CN 202959231U
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- Prior art keywords
- motor
- sensor
- brushless motor
- direct current
- circuit board
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Abstract
The utility model provides an electric blower with a sensor-free direct current brushless motor. The electric blower comprises a housing, a motor fixing stand, a fan impeller, a motor and a control circuit board. The motor belongs to a sensor-free outer rotor three-phase direct current brushless motor. Three phase lines of the motor are in drive connection with the motor. The control circuit board is provided with a rectifier, a filter and an inverter. An alternating current is converted by the rectifier and the filter into a direct current voltage, and the motor is driven by the direct current voltage to run via the inverter. The direct current brushless motor is utilized to serve as power of blowing for the electric blower. Electronic commutation is adopted so as to avoid wearing between a carbon brush and a commutator of mechanical commutation. Moreover, the advantages are that the electric blower with the sensor-free direct current brushless motor is spark-free, is small in size, long in service life, low in electromagnetic interference, high in rotating speed and low in fluctuation of rotating speed, is easy to adjust, and enables the stepless speed control efficiency within a wide scope to be high.
Description
Technical field
The utility model relates to the hair drier technical field, particularly, relates to a kind of hair drier that has without the sensor dc brushless motor.
Background technology
The blowing power that like product adopts at present is DC electromotor with brush, AC series excited machine, interchange motor with cup rotor, all has inefficient shortcoming.In addition all have carbon brush and commutator on its frame for movement of DC electromotor with brush and AC series excited machine, there is mechanical commutation, noise is large, due to mechanical wear, the life-span of motor is short, and the spark that produces when commutation will produce electromagnetic radiation, to electric equipment products, as television set, mobile phone etc., will produce great interference.And motor with cup rotor determines that due to the principle of its work its rotating speed is low, the shortcoming such as volume is large, and efficient is low.
The utility model content
For this reason, the utility model provides a kind of hair drier that has without the sensor dc brushless motor.Utilize dc brushless motor as the power of hair drier blowing, it is little that dc brushless motor has a volume, what commutation was adopted is electronic commutation, the carbon brush when not having mechanical commutation and the wearing and tearing between commutator, no-spark, it is long to have a life-span, electromagnetic interference is little, and rotating speed is high, and the fluctuation of speed is little, easily regulate, can realize the high advantage of stepless speed regulation efficient of wide region.
The technical solution of the utility model is as follows: a kind of hair drier that has without the sensor dc brushless motor, comprise housing, be fixed in the motor fixing frame in housing, be fixed in respectively blast fan and the motor of motor fixing frame both sides, motor is provided with control circuit board, and control circuit board is electrically connected to is located at speed-regulating switch on described housing; Described control circuit board also is electrically connected to a power circuit plate, and the switch of this electric connection of power supply wiring board also is located on housing, and the power circuit plate is electrically connected to a heater and external power supply; It is characterized in that, described motor is without sensor outer rotor three-phase direct-current brushless motor, three phase lines and the motor-driven of motor link, described control circuit board is provided with rectifier, wave filter, inverter, wherein rectifier and wave filter are with alternating current (voltage AC80-240V, frequency 50 is to 60Hz) be converted to DC voltage, DC voltage turns round by inverter AC motor, and described control circuit board is also controlled the rotary speed of motor by the dutycycle of the ON time of each power switch pipe on the controller control inverter.
Described motor comprises casing, and forward and backward bearing passes the axle of forward and backward bearing and casing, coats bearing holder (housing, cover), rotor rim, magnetite and the stator module of rear bearing; Described magnetite be 2-8 to magnet ring or the sheet magnetite of the utmost point, be bonded in the inner surface of described rotor rim; It is an integer groove of 3 that described stator module contains cored.
Described magnetite is Agglutinate neodymium-iron-boron, sintered NdFeB, strontium or barium ferrite, aluminium nickel cobalt or SmCo magnetic.
The beneficial effects of the utility model are: the hair drier that has without the sensor dc brushless motor described in the utility model, utilize dc brushless motor as the power of hair drier blowing, volume is little, adopts electronic commutation, carbon brush when not having mechanical commutation and the wearing and tearing between commutator, no-spark has a life-span long, and electromagnetic interference is little, rotating speed is high, the fluctuation of speed is little, easily regulates, and can realize the high advantage of stepless speed regulation efficient of wide region.
Description of drawings:
Fig. 1 is the hair drier cross-sectional view that has without the sensor dc brushless motor described in the utility model;
Fig. 2 is the hair drier electrical module connection diagram that has without the sensor dc brushless motor described in the utility model;
Fig. 3 is the wiring schematic diagram that has without the hair drier of sensor dc brushless motor described in the utility model;
Fig. 4 hair drier electric machine structure schematic diagram that has without the sensor dc brushless motor described in the utility model.
Specific embodiment
Below in conjunction with preferred embodiment, the hair drier that has without the sensor dc brushless motor described in the utility model is described further.
With reference to Fig. 1-4, a kind of hair drier that has without the sensor dc brushless motor, comprise housing 1, be fixed in the motor fixing frame 6 in housing, be fixed in respectively blast fan 5 and the motor 7 of motor fixing frame both sides, motor 7 is provided with control circuit board 8, and control circuit board 8 is electrically connected to is located at speed-regulating switch 2 on described housing; Described control circuit board 8 also is electrically connected to a power circuit plate 4, and the switch 3 of this power circuit plate 4 also is located on housing 1, and power circuit plate 3 is electrically connected to heater 9 and an external power supply.Described motor is without sensor outer rotor three-phase direct-current brushless motor, three phase lines and the motor-driven of motor link, described control circuit board 8 is provided with rectifier, wave filter, inverter, wherein rectifier and wave filter are with alternating current (voltage AC80-240V, frequency 50 is to 60Hz) be converted to DC voltage, DC voltage is by inverter AC motor 8 runnings, and described control circuit board is also controlled the rotary speed of motor by the dutycycle of the ON time of each power switch pipe on the controller control inverter.
With reference to Fig. 4, described motor 7 comprises casing 71, and forward and backward bearing 73 and 78 passes forward and backward bearing 78 and 73 and the axle 79 of casing 71, coats bearing holder (housing, cover) 72, rotor rim 75, magnetite 76 and the stator module 77 of rear bearing 73; Described magnetite 76 be 2-8 to magnet ring or the sheet magnetite of the utmost point, be bonded in the inner surface of described rotor rim 75; It is an integer groove of 3 that described stator module 77 contains cored.
Described magnetite 76 is Agglutinate neodymium-iron-boron, sintered NdFeB, strontium or barium ferrite, aluminium nickel cobalt or SmCo magnetic.
The hair drier that has without the sensor dc brushless motor described in the utility model, the course of work is as follows: speed-regulating switch or or speed governing knob 2 be electrically connected to control circuit board 8, thereby control circuit board 8 is electrically connected to the speed of service of controlling motor with motor 3; Power control switch 3 is connected and is connected with power circuit plate 4 with heater 9, controls and opens/broken hair hot body 9, and control and open/power machine 3.After power control switch 3 is opened, the rectifier of control circuit board 8 and wave filter are converted to direct current with alternating current (voltage AC80-240V, frequency 50 is to 60Hz) and send into motor, and drives fan wheel 5 is rotated, wind is sucked from air inlet, and the air-flow of formation is blown out by air outlet through heater 9.Control the speed of service of motor and then control blast fan 5 velocities of rotation by speed governing knob 2, thereby controlling air force.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, its framework form can be flexible and changeable, can the subseries product.Just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of submitting to.
Claims (5)
1. a hair drier that has without the sensor dc brushless motor, comprise housing, motor fixing frame, blast fan, and motor and control circuit board, control circuit board are electrically connected to is located at speed-regulating switch on described housing; Described control circuit board also is electrically connected to a power circuit plate, and the switch of this electric connection of power supply wiring board also is located on housing, and the power circuit plate is electrically connected to a heater and external power supply; It is characterized in that, described motor is without sensor outer rotor three-phase direct-current brushless motor, three phase lines and the motor-driven of motor link, described control circuit board is provided with rectifier, wave filter, inverter, wherein rectifier and wave filter are converted to DC voltage with alternating current, DC voltage turns round by inverter AC motor, and described control circuit board is also controlled the rotary speed of motor by the dutycycle of the ON time of each power switch pipe on the controller control inverter.
2. the hair drier that has without the sensor dc brushless motor as claimed in claim 1, it is characterized in that, described motor comprises casing, forward and backward bearing, pass the axle of forward and backward bearing and casing, coat bearing holder (housing, cover), rotor rim, magnetite and the stator module of rear bearing; Described magnetite is bonded in the inner surface of described rotor rim.
3. the hair drier that has without the sensor dc brushless motor as claimed in claim 2, is characterized in that, described magnetite is that 2-8 is to magnet ring or the sheet magnetite of the utmost point.
4. the hair drier that has without the sensor dc brushless motor as claimed in claim 2, is characterized in that, it is an integer groove of 3 that described stator module contains cored.
5. the hair drier that has without the sensor dc brushless motor as claimed in claim 2, is characterized in that, described magnetite is Agglutinate neodymium-iron-boron, sintered NdFeB, strontium or barium ferrite, aluminium nickel cobalt or SmCo magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220223193 CN202959231U (en) | 2012-05-15 | 2012-05-15 | Electric blower with sensor-free direct current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220223193 CN202959231U (en) | 2012-05-15 | 2012-05-15 | Electric blower with sensor-free direct current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202959231U true CN202959231U (en) | 2013-06-05 |
Family
ID=48500387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220223193 Expired - Fee Related CN202959231U (en) | 2012-05-15 | 2012-05-15 | Electric blower with sensor-free direct current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202959231U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20132143A1 (en) * | 2013-12-19 | 2015-06-20 | Ga Ma S R L | ELECTRIC MANIFOLD WITH COLLECTOR |
| CN109171159A (en) * | 2018-11-14 | 2019-01-11 | 宁波高立电子科技有限公司 | Idler wheel mechanism and hair dryer on hair dryer |
| US10299560B1 (en) | 2017-11-10 | 2019-05-28 | Follicle, LLC | Battery operated hair dryer |
-
2012
- 2012-05-15 CN CN 201220223193 patent/CN202959231U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20132143A1 (en) * | 2013-12-19 | 2015-06-20 | Ga Ma S R L | ELECTRIC MANIFOLD WITH COLLECTOR |
| US10299560B1 (en) | 2017-11-10 | 2019-05-28 | Follicle, LLC | Battery operated hair dryer |
| US11064783B2 (en) | 2017-11-10 | 2021-07-20 | Follicle, Inc. | Battery operated hair dryer |
| CN109171159A (en) * | 2018-11-14 | 2019-01-11 | 宁波高立电子科技有限公司 | Idler wheel mechanism and hair dryer on hair dryer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20140515 |