WO2023207061A1 - 一种直流无刷电机及应用该电机的吹风机 - Google Patents

一种直流无刷电机及应用该电机的吹风机 Download PDF

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Publication number
WO2023207061A1
WO2023207061A1 PCT/CN2022/134427 CN2022134427W WO2023207061A1 WO 2023207061 A1 WO2023207061 A1 WO 2023207061A1 CN 2022134427 W CN2022134427 W CN 2022134427W WO 2023207061 A1 WO2023207061 A1 WO 2023207061A1
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Prior art keywords
board
motor
driving
air guide
drive
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PCT/CN2022/134427
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English (en)
French (fr)
Inventor
董晓勇
黄冬青
李春晖
唐波
张志新
Original Assignee
深圳盈特创智能科技有限公司
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Application filed by 深圳盈特创智能科技有限公司 filed Critical 深圳盈特创智能科技有限公司
Priority to US18/097,560 priority Critical patent/US20230344319A1/en
Publication of WO2023207061A1 publication Critical patent/WO2023207061A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides

Definitions

  • the present application relates to the field of motors, and in particular, to a brushless DC motor and a hair dryer using the motor.
  • the brushless DC motor consists of a motor body and a driver. It is a typical mechatronics product, and brushless DC motors are increasingly used in our lives, for example, in the hair dryers we use daily.
  • this application provides a brushless DC motor and a hair dryer using the motor.
  • this application provides a brushless DC motor that adopts the following technical solution:
  • a brushless DC motor includes a main body and a driver.
  • the driver includes a drive board for integrating driving devices for driving the motor, a wiring board for wiring, and a control board for integrating control components.
  • the wiring board The stator end of the main body is disposed on the stator end of the main body.
  • the driving plate is disposed on the side of the wiring board away from the stator end of the main body. The plane where the driving plate is located and the stator end of the main body face the wiring board. The extending directions are arranged in parallel, and the driving board is electrically connected to the wiring board and the control board respectively.
  • the driving circuit can be pre-set on the driving board.
  • the drive device is separated and installed.
  • the impact of the control components is low, and the contact surface between all the driving components and the air can be increased, thereby improving the heat dissipation efficiency of the driving components on the driving board, and the plane of the driving board and the stator end of the main body are directed towards the wiring board.
  • the driving device installed on the driving board is in the direction of the blowing air of the device, and the device itself can be used to dissipate heat to the brushless motor, thereby improving the heat dissipation efficiency of the brushless motor.
  • an extended installation section is provided on the side of the drive board facing the wiring board, and a strip groove is provided on the wiring board for the extended installation section to be embedded.
  • the drive board and the main body by inserting the extended installation section of the drive board into the strip hole, on the one hand, the drive board and the main body can be fixed, and on the other hand, the location of the drive board can also be made The plane is kept parallel to the stator end of the main body in the extending direction toward the terminal board.
  • a first conductive layer is provided on the side of the extended installation section toward the inner wall in the length direction of the strip groove, and a second conductive layer is provided on the inner wall of the strip groove at a position corresponding to the first conductive layer.
  • the first conductive layer and the second conductive layer are electrically connected.
  • the first conductive layer and the first conductive layer abut each other, so that the electrical connection between the drive board and the wiring board can be realized.
  • the surface of the driving board is provided with interface terminals (10) for connecting the driving board to external circuits.
  • the interface terminal can be used to plug the control board's cable into the interface terminal, thereby realizing the connection between the drive board and the control board. electrical connection between them.
  • this application provides a hair dryer that adopts the following technical solution:
  • a hair dryer includes a casing and a brushless DC motor.
  • the casing includes an air inlet section, a heating section and an air outlet section arranged in sequence.
  • the motor is arranged between the heating section and the inlet section. between the air sections, and the drive plate is located on the side of the motor facing the heating section, the motor is provided with a fan assembly on the side facing the air inlet section, and the inner wall of the housing is provided with a
  • the air direction inside the casing is directed to the air guide assembly on the drive board.
  • the motor electric fan assembly rotates in the casing and blows the wind from the air inlet section to the blowing section.
  • the driving device on the driving board is in the process of continuous heating, Since the plane of the drive board is consistent with the wind direction inside the casing, the wind blown from the fan assembly to the air outlet section can flow through the drive components on the drive board, thereby speeding up the heat dissipation efficiency of the drive components on the drive board.
  • the air guide assembly includes air guide fins that are disposed obliquely on the inner walls of opposite sides of the housing, and the air guide fins are disposed on the side of the housing parallel to the side of the drive board where the drive device is integrated. on the inner wall.
  • a plurality of magnetic blocks are provided on the side of the air guide plate away from the drive plate, and electromagnets are provided on the inner wall of the housing corresponding to the magnetic blocks.
  • a temperature sensor is provided on it.
  • the air guide fin is arranged in an arc shape, and the air guide fin forms a concave arc toward the side of the driving plate.
  • the guide assembly includes an elastic layer disposed on the inner wall of the housing, an accommodation cavity is formed between the elastic layer and the inner wall of the housing, and a preheated and expanded rubber is disposed in the accommodation cavity. Vaporizing liquid.
  • the elastic layer is in an arc shape protruding from the inner wall of the housing.
  • the inner wall of the housing is provided with a limiting arc-shaped piece extending along the outside of the elastic layer, and both ends of the elastic layer are provided with limiting plates. Curved piece.
  • the convex direction of the elastic layer can be limited by the limiting arc-shaped piece, so that more of the elastic layer bulges toward the driving plate, thereby allowing more of the wind guide drive plate.
  • the wind blowing from the fan assembly to the air outlet section can flow through the driving device on the driving board, thereby speeding up the heat dissipation efficiency of the driving device on the driving board;
  • the housing can be adjusted through the air guide assembly and is located between the heating section and the motor.
  • the wind direction causes more wind to blow to the driving devices on the driving board, thereby ensuring the heat dissipation efficiency of the driving devices on the driving board.
  • Figure 1 is a schematic diagram of the overall structure of a brushless DC motor in an embodiment of the present application
  • Figure 2 is an exploded view of the wiring board and drive board in a brushless DC motor according to an embodiment of the present application
  • Figure 3 is an enlarged view of part A in Figure 2 of a brushless DC motor according to an embodiment of the present application;
  • Figure 4a1 is a structural diagram of the state of the air guide blade when the hair dryer is not in use or has just been used according to the embodiment of the present application;
  • Figure 4a2 is a structural diagram of the state of the air guide blade after the hair dryer has been used for a period of time according to the embodiment of the present application;
  • Part b1 of Figure 5 is an enlarged view of part B1 in Figure 4 of a hair dryer according to the embodiment of the present application;
  • Part b2 of Figure 5 is an enlarged view of part B2 in Figure 4 of a hair dryer according to the embodiment of the present application;
  • Part c1 of Figure 6 is a structural diagram of the state of the elastic layer when the hair dryer is not in use or has just been used according to the embodiment of the present application;
  • Part c2 of Figure 6 is a structural diagram of the state of the elastic layer after the hair dryer has been used for a period of time according to the embodiment of the present application.
  • the application provides a brushless DC motor.
  • the driver includes a driving board 2 for integrating the driving device of the driving motor.
  • a control board (not shown in the drawing) for integrating control components and a wiring board 3 for wiring.
  • the drive circuit of the brushless motor can be pre-set on the drive board 2. During the subsequent use of the motor, there is no need to provide it.
  • the drive circuit drives the motor, and the terminal board 3 is installed on the stator end of the main body 1 .
  • the stator end refers to the other end of the single-shaft motor opposite to the end with the output end.
  • a plurality of through holes 4 for welding the stator end windings of the main body 1 are penetrated through the wiring board 3.
  • the through holes 4 are in the wiring board.
  • the drive board 2 is fixed on the side of the stator end of the terminal board 3 away from the main body 1. Connect the control board and the drive board.
  • the board 2 is disassembled and assembled, and the drive board 2 is electrically connected to the wiring board 3 and the control board respectively.
  • the driving device is integrated on the driving board 2 and the control components are integrated on the control board, and the driving board 2 and the control board are assembled separately. Therefore, during the heating process of the driving device, the impact on the control components is low, and all the components can be increased.
  • the driving device itself is in contact with the air, thereby improving the heat dissipation efficiency of the driving device on the driving board 2 .
  • the blowing direction of the equipment is in the direction extending from the stator end of the brushless motor to the terminal board 3, so in order to improve the For the heat dissipation efficiency of the brushless DC motor, the plane of the drive board 2 is arranged parallel to the direction extending from the stator end of the main body 1 to the terminal board 3, so that the generated wind can dissipate heat to the components on the surface of the drive board 2, which can Further improve the heat dissipation efficiency of the motor itself.
  • a first conductive layer is provided on the side of the extended installation section 5, and at the same time, the strip groove is The inner wall of 6 is provided with a second conductive layer 7 at a position corresponding to the first conductive layer.
  • the second conductive layer 7 is made of conductive silver glue.
  • a mounting hole 8 is drilled through the extended mounting section 5, and a conductive patch 9 is welded in the mounting hole 8.
  • the first conductive layer is formed by the conductive patch 9.
  • the interface terminal 10 is welded on the surface of the drive board 2, and the interface terminal 10 is electrically connected to the drive board 2; during assembly, The cable on the control board can be plugged into the interface terminal 10, thereby ensuring the overall electrical signal transmission inside the brushless motor.
  • the implementation principle of an integrated high-speed brushless DC motor in the embodiment of the present application is: during the actual use of the brushless motor of the present application, since the driving device of the driver is integrated on the drive board 2, the control components are integrated on the control board on the drive board 2, and the plane of the drive board 2 is parallel to the extending direction from the stator end of the main body 1 to the terminal board 3.
  • the drive circuit can be pre-set on the drive board 2.
  • the drive device and the control component are installed separately. During the heating process of the drive device, the impact on the control component is low, and all the drive devices themselves can be added.
  • the heat dissipation efficiency of the driving components on the driving board 2 can be improved.
  • the brushless motor is used in equipment such as fans and extensions, the wind of the equipment itself can be used to heat the components on the driving board 2 Carry out heat dissipation, thereby further improving the overall heat dissipation efficiency of the brushless motor.
  • the application provides a hair dryer.
  • a hair dryer Referring to Figures 4 and 5, it includes a housing 11 and a DC brushless motor.
  • the housing 11 includes an air inlet section 12, a heating section 13 and an air outlet section 14 arranged in sequence.
  • the motor is installed between the heating section 13 and the air inlet section 12, and the driving plate 2 is oriented from the motor to the heating section 13.
  • a fan assembly 15 is installed on the side of the motor facing the air inlet section 12.
  • the fan assembly 15 has fan blades (not shown in the figure) installed in the air inlet section 12. When the fan blades are driven by the motor to rotate, the wind can be blown from the air inlet section 12 to the air outlet section 14.
  • the length direction of the drive board 2 is consistent with the wind direction inside the casing 11, the wind blown from the fan assembly 15 to the air outlet section 14 can flow through the drive components on the drive board 2. At this time, the drive components on the drive board 2 can be controlled. The device dissipates heat, thereby accelerating the heat dissipation efficiency of the driving device on the driving board 2 .
  • a temperature sensor 16 is installed on the inner wall of the housing 11, and the temperature sensor 16 is installed between the heating section 13 and the motor. Since the hair dryer is in use, the driving device on the driving board 2 continues to generate heat, and the temperature will continue to Rise, so when it is detected that the temperature inside the housing 11 continues to rise, in order to ensure that the temperature of the driving device of the driving board 2 will not be too high, a device is installed on the inner wall of the housing 11 between the heating section 13 and the motor.
  • the casing 11 Direct the air inside the casing 11 to the air guide assembly on the drive plate 2; when it is detected that the temperature of the internal space in the casing 11 between the heating section 13 and the motor rises, the casing 11 can be adjusted through the air guide assembly Moreover, the wind direction between the heating section 13 and the motor causes more wind to blow toward the driving devices on the driving board 2 , thereby ensuring the heat dissipation efficiency of the driving devices on the driving board 2 .
  • the air guide assembly includes air guide fins 17 that are arranged obliquely on the inner walls of the opposite sides of the housing 11. There are two air guide fins 17, and the air guide fins 17 are installed
  • the inner wall of the housing 11 is parallel to the side of the driving plate 2 where the driving device is integrated; when the wind inside the housing 11 blows on the air guide 17, since the air guide 17 is tilted, the air can be blown onto the air guide 17.
  • the wind on the piece 17 blows toward the middle of the casing 11 , thereby changing the wind direction so that more wind blows toward the driving plate 2 .
  • the air guide plate 17 is set in an arc shape, and the air guide plate 17 is concave toward the drive plate 2 side. arc; at the same time, multiple magnetic suction blocks 18 are installed at intervals along the length direction of the air guide fin 17 on the side of the air guide 17 away from the drive plate 2. In this embodiment, 3 magnetic suction blocks 18 are installed. and the magnetic block 18 is a metal block.
  • electromagnets 19 are installed on the inner wall of the housing 11 at positions corresponding to the magnetic block 18. The number of the electromagnets 19 is consistent with the number of the magnetic blocks 18.
  • the electromagnet 19 farthest from the motor is energized. At this time, the electromagnet 19 attracts the magnetic block 18 farthest from the motor, so that the air guide plate 17 can be Close to the inner wall of the housing 11; when the temperature sensor 16 detects that the temperature inside the housing 11 rises to a certain level, the electromagnet 19 farthest from the motor is powered off, and the middle electromagnet 19 is energized.
  • the electromagnet 19 farthest from the motor is separated from the magnetic block 18 farthest from the motor, and the middle electromagnet 19 attracts the middle magnetic block 18, so that the air guide plate 17 can be bent toward the drive plate 2, so that the air guide plate 17 can be bent toward the drive plate 2.
  • the wind blowing on the air guide plate 17 is blown to the drive board 2 to dissipate heat from the drive components of the drive board 2; as the temperature continues to rise, when only the electromagnet 19 closest to the motor is energized, the middle electromagnet 19 Detach the middle magnetic block 18, and the electromagnet 19 closest to the motor will attract the magnetic block 18 closest to the motor.
  • the angle between the air guide 17 and the inner wall of the casing 11 is further increased, and more wind can be absorbed. guide to the driving plate 2, thereby ensuring the temperature of the driving components on the driving plate 2 when the temperature rises; finally, when all three electromagnets 19 are powered off, the angle between the air guide 17 and the inner wall of the housing 11 is the largest at this time.
  • the maximum amount of air can be directed to the driving plate 2; through the above process, when the internal temperature of the housing 11 reaches different temperature thresholds, the inclination angle of the air guide 17 can also be adjusted, thereby controlling the amount of air blown to the driving plate 2. Adjust to ensure the heat dissipation efficiency of the drive device of drive board 2.
  • the air guide assembly is installed on the elastic layer 20 on the inner wall of the housing 11 parallel to the side of the driving plate 2 integrated with the driving device, and between the elastic layer 20 and the inner wall of the housing 11 A receiving cavity is formed, and a preheated and expanded vaporized liquid is contained in the receiving cavity.
  • the vaporized liquid is perfluorohexanone commonly used in firefighting.
  • the elastic layer 20 is in an arc protruding from the inner wall of the housing 11 Shape, the inner wall of the housing 11 extends along the outside of the elastic layer 20 to form a limiting arc-shaped piece 21, and there are limiting arc-shaped pieces 21 at both ends of the elastic layer 20; when the vaporized liquid is heated and vaporized, the limiting arc-shaped piece 21 can be elastic
  • the convex direction of the layer 20 is limited so that the elastic layer 20 bulges more toward the driving board 2 , so that more wind can be directed to the driving board 2 , thereby improving the heat dissipation efficiency of the driving devices on the driving board 2 .
  • the implementation principle of a hair dryer in the embodiment of the present application is: during the use of the hair dryer, the motor electric fan assembly 15 rotates in the casing 11 to blow the wind from the air inlet section 12 to the blowing section.
  • the driving device is in the process of continuously generating heat.
  • the wind blowing from the fan assembly 15 to the air outlet section 14 can flow through the driving device on the driving plate 2.
  • This can speed up the heat dissipation efficiency of the driving components on the driving board 2; when it is detected that the temperature of the internal space in the housing 11 and between the heating section 13 and the motor increases, the air guide assembly can be used to adjust the housing 11 and is located between the heating section and the motor.
  • the wind direction between the section 13 and the motor causes more wind to blow toward the driving devices on the driving board 2 , thereby ensuring the heat dissipation efficiency of the driving devices on the driving board 2 .

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  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
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Abstract

提供了一种直流无刷电机及应用电机的吹风机。包括主体（1）以及驱动器, 驱动器包括用于集成驱动电机的驱动器件的驱动板（2）、用于接线的接线板（3）、用于集成控制元器件的控制板,接线板（3）设置于主体（1）的定子端, 驱动板（2）设置于接线板（3）远离主体（1）的定子端一侧上, 驱动板（2）所在平面与主体（1）的定子端朝向接线板（3）的延伸方向平行设置, 驱动板（2）分别电连接于接线板（3）、控制板。具有提高对于吹风机内电机驱动器件的散热效率的效果。

Description

一种直流无刷电机及应用该电机的吹风机 技术领域
本申请涉及电机的领域，尤其是涉及一种直流无刷电机及应用该电机的吹风机。
背景技术
直流无刷电机由电动机主体和驱动器组成，是一种典型的机电一体化产品，并且无刷直流电机在我们的生活中应用也日益增加，例如，我们日常使用的吹风机。
但是在吹风机的使用过程中，电机上的驱动器件会持续发热，并且吹风机在吹出热风时，吹风机内部的空间温度上升，从而进一步导致电机驱动器件的温度上升，可能会导致驱动器件损坏，但是吹风机内部对于电机驱动器件的散热效率较低，所以对此情况有待进一步改善。
发明内容
为了提高对于吹风机内电机驱动器件的散热效率，本申请提供一种直流无刷电机及应用该电机的吹风机。
第一方面，本申请提供的一种直流无刷电机，采用如下的技术方案：
一种直流无刷电机，包括主体以及驱动器，所述驱动器包括用于集成驱动所述电机的驱动器件的驱动板、用于接线的接线板用于集成控制元器件的控制板，所述接线板设置于所述主体的定子端，所述驱动板设置于所述接线板远离所以及述主体的定子端一侧上，所述驱动板所在平面与所述主体的定子端朝向所述接线板的延伸方向平行设置，所述驱动板分别电连接于所述接线板以及所述控制板。
通过采用上述技术方案，本申请的无刷电机在实际使用过程中，通过将驱动器的驱动器件集成在驱动板上、将控制元器件集成在控制板上，一方面驱动板可以预先设置好驱动电路，相比于现在的高速直流无刷电机，无需再提供驱动电路对电机进行驱动，可以电连接控制板进行使用较为方便；另一方面将驱动器件拆分安装，在驱动器件发热过程中，对于控制元器件的影响较低，还可以增加全部驱动器件自身与空气接触面，从而可以提高对于驱动板上驱动器件的散热效率，并且将驱动板的所在平面与主体的定子端往朝向接线板的延伸方向平行设置上，此时设置在驱动板的驱动器件便在设备的吹风风向上，便可以利用设备自身对无刷电机进行散热，从而提高无刷电机的散热效率。
可选的，所述驱动板朝向所述接线板的一侧上设置有延伸安装段，所述接线板上设置有供所述延伸安装段嵌入的条形槽。
通过采用上述技术方案，为了将驱动板与主体进行组装，通过将驱动板上的延伸安装段插入条形孔内，一方面可以实现驱动板与主体固定，另一方面还可以使得驱动板的所在平面与主体的定子端往朝向接线板的延伸方向保持平行。
可选的，所述延伸安装段朝向所述条形槽长度方向内壁的侧面设置有第一导电层，所述条形槽内壁对应第一导电层的位置设置有第二导电层，在所述延伸安装段嵌入所述条形槽时，所述第一导电层与第二导电层电连接。
通过采用上述技术方案，在延伸安装段嵌入条形孔之后，通过第一导电层与第一导电层相互抵接，从而便可以实现驱动板以及接线板之间的电连接。
可选的，所述驱动板表面设置有用于将所述驱动板连接外部电路的接口端子(10)。
通过采用上述技术方案，在整个无刷电机进行组装的过程中，通过焊接在驱动板上的接口端子，可以利用接口端子将控制板的排线插到接口端子上，从而实现驱动板与控制板之间的电连接。
第二方面，本申请提供的一种吹风机，采用如下的技术方案：
一种吹风机，包括壳体以及一种所述的直流无刷电机，所述壳体包括依次设置的入风段、发热段以及出风段，所述电机设置于所述发热段与所述入风段之间，且所述驱动板位于所述电机朝向所述发热段一侧上，所述电机朝向所述入风段一侧设置有风扇组件，所述壳体的内壁上设置有用于将壳体内部的风向导向至驱动板上的导风组件。
通过采用上述技术方案，在吹风机的使用过程中，电机电动风扇组件在壳体内转动，将风从入风段吹向吹风段过程中，虽然驱动板上的驱动器件处于持续发热的过程中，但是由于驱动板的所在平面与壳体内部风向一致，所以从风扇组件吹向出风段的风可以流经驱动板上的驱动器件，从而可以加快驱动板上驱动器件的散热效率。
可选的，所述导风组件包括倾斜设置于壳体相对两侧内壁上的导风片，且所述导风片设置于所述壳体平行于所述驱动板集成有驱动器件的侧面的内壁上。
通过采用上述技术方案，通过设置的导向风，当壳体内部的风吹向导风片上，由于导风片是倾斜设置的，便可以使得吹到导风片上的风吹向壳体中间，从而实现改变风向，使得更多的风吹向驱动板。
可选的，所述导风片远离所述驱动板的一侧设置有多个磁吸块，所述壳体内壁上对应所述磁吸块的位置均设置有电磁铁，所述壳体内壁上设置有温度传感器。
通过采用上述技术方案，当温度传感器检测壳体内部的温度上升并且达到预设的阈值时，可以通过控制不同的电磁铁通电，在电磁铁通电之后，可以将导风片上对应的磁吸块 吸附，从而便可以改变导风片的倾斜角度，导风片与壳体内壁之间的夹角越大，便可以将更多的风导向驱动板上，所以通过设置的多个电磁铁以及多个磁吸块，在达到不同温度阈值时，还可以调整导风片的倾斜角度，从而实现对吹到驱动板上风量的调节。
可选的，所述导风片设置为弧形，且所述导风片朝向所述驱动板一侧呈凹弧。
通过采用上述技术方案，在风吹到导风片上时，通过将导风片设置为弧形，可以吹到导风片上的风更加顺畅导向驱动板上。
可选的，所述导向组件包括设置于所述壳体的内壁上的弹性层，所述弹性层与所述壳体内壁之间形成有容纳腔，所述容纳腔内设置有预热膨胀的汽化液。
通过采用上述技术方案，在壳体的内部温度升高，由于容纳腔内部的汽化液遇热慢慢汽化，从而使得容纳腔内部的气压大于壳体内部的气压，弹性层便朝向驱动板的方向凸起，在壳体内部的风吹向出风段时，由于风受到凸起的弹性层导向，从而往壳体内部的驱动板流动，从而便可以增加吹向驱动板上的风量。
可选的，所述弹性层呈凸出所述壳体内壁的弧形，所述壳体内壁沿所述弹性层外侧延伸设置有限位弧形片，且所述弹性层两端均设置有限位弧形片。
通过采用上述技术方案，在汽化液受热汽化时，通过设置的限位弧形片，可以弹性层的凸起方向进行限制，使得弹性层更多的往驱动板方向凸起，从而可以将更多的风导向驱动板。
综上所述，本申请包括以下至少一种有益技术效果：
相比于现在的高速直流无刷电机，无需再提供驱动电路对电机进行驱动，可以电连接控制板进行使用较为方便；可以增加全部驱动器件自身与空气接触面，从而可以提高对于驱动板上驱动器件的散热效率；便可以利用设备自身对无刷电机进行散热，从而提高无刷电机的散热效率。
所以从风扇组件吹向出风段的风可以流经驱动板上的驱动器件，从而可以加快驱动板上驱动器件的散热效率；可以通过导风组件进行调整壳体且位于发热段与电机之间的风向，使得更多的风吹向驱动板上的驱动器件，从而可以确保对于驱动板的驱动器件的散热效率。
附图说明
图1是本申请实施例中一种直流无刷电机的整体结构示意图；
图2是本申请实施例一种直流无刷电机中接线板与驱动板的爆炸图；
图3是本申请实施例一种直流无刷电机图2中A部分的放大图；
图4a1部分是本申请实施例一种吹风机未使用或者刚使用时导风片的状态结构图；
图4a2部分是本申请实施例一种吹风机使用一段时间后导风片的状态结构图；
图5b1部分是本申请实施例一种吹风机图4中B1部分的放大图；
图5b2部分是本申请实施例一种吹风机图4中B2部分的放大图；
图6c1部分是本申请实施例一种吹风机未使用或者刚使用时弹性层的状态结构图；
图6c2部分是本申请实施例一种吹风机使用一段时间后弹性层的状态结构图。
附图标记说明：
1、主体；2、驱动板；3、接线板；4、通孔；5、延伸安装段；6、条形槽；7、第二导电层；8、安装孔；9、导电贴片；10、接口端子；11、壳体；12、入风段；13、发热段；14、出风段；15、风扇组件；16、温度传感器；17、导风片；18、磁吸块；19、电磁铁；20、弹性层；21、限位弧形片。
具体实施方式
以下为对本申请作进一步详细说明。
第一方面，本申请提供的一种直流无刷电机，参照图1和图2，包括主体1以及驱动器，在本申请实施例中，驱动器包括用于集成驱动电机的驱动器件的驱动板2、用于集成控制元器件的控制板(图纸未示出)以及用于接线的接线板3，驱动板2上可以预先设置无刷电机的驱动电路，在电机的后续的使用过程中，无需再提供驱动电路对电机进行驱动，接线板3安装在于主体1的定子端上。在常规的单轴电机中，电机只有一端具有与动子连接的输出轴，本申请中，定子端指单轴电机上与具有输出端的一端相反的另一端。
参照图2和图3，为了将接线板3进行固定，在接线板3上贯穿开设有多个用于焊接主体1的定子端绕组的通孔4，在本申请中，通孔4在接线板3上设置有6个，将绕组在接线板3进行焊接，便可以将接线板3与定子进行固定；驱动板2固定在接线板3远离主体1的定子端一侧上，将控制板与驱动板2拆分组装，并且驱动板2分别电连接于接线板3、控制板。
将驱动器件集成在驱动板2上、控制元器件集成在控制板，并且驱动板2与控制板拆分组装，所以在驱动器件发热过程中，对于控制元器件的影响较低，还可以增加全部驱动器件自身与空气接触面，从而可以提高对于驱动板2上驱动器件的散热效率。
另外，参照图2和图3，在直流无刷电机应用在风扇以及分机等设备上时，设备的吹风风向是在由无刷电机定子端向接线板3的延伸方向上的，所以为了提高对直流无刷电机使用的散热效率，将驱动板2的所在平面与由主体1的定子端向接线板3的延伸方向平行设置，使得产生的风可以对驱动板2表面的元器件进行散热，可以进一步提高电机自身的散热效率。
在组装过程中，参照图2和图3，为了保持驱动板2的所在平面与由主体1的定子端向接线板3的延伸方向保持平行，在驱动板2朝向接线板3一侧上一体形成有延伸安装段5，接线板3上贯穿开设有供延伸安装段5嵌入的条形槽6；通过将驱动板2上的延伸安装段5插入条形槽6中，便可以在将驱动板2在由主体1的定子端向接线板3的延伸方向上将驱动板2固定。
参照图2和图3，在驱动板2固定之后，还需确保驱动板2与接线板3之间的电连接，所以在延伸安装段5的侧面设有第一导电层，同时在条形槽6内壁对应第一导电层的位置设有第二导电层7，在本实施例中，第二导电层7采用导电银胶，在延伸安装段5嵌入条形槽6且驱动板2固定之后，第一导电层与第二导电层7抵接，从而现在驱动板2与接线板3之间的电连接。
其中，在延伸安装段5上贯穿开设有安装孔8，在安装孔8内焊接有导电贴片9，在申请实施例中，第一导电层由导电贴片9形成。
在无刷电机的使用过程中，需要确保控制板与驱动板2之间的电连接，所以在驱动板2表面焊接有接口端子10，并且接口端子10与驱动板2电连接；在组装时，便可以将控制板上的排线插到接口端子10上，从而便可以保证无刷电机内部整体的电信号传输。
本申请实施例一种集成的高速直流无刷电机的实施原理为：本申请的无刷电机在实际使用过程中，由于驱动器的驱动器件集成在驱动板2上、将控制元器件集成在控制板上，并且驱动板2的所在平面与由主体1的定子端向接线板3的延伸方向在平行设置，一方面在驱动板2上可以预先设置好驱动电路，相比于现在的高速直流无刷电机，无需再提供驱动电路对电机进行驱动；另一方面将驱动器件与控制元器件进行拆分安装，在驱动器件发热过程中，对于控制元器件的影响较低，还可以增加全部驱动器件自身与空气接触面，从而可以提高对于驱动板2上驱动器件的散热效率，另一方面，在无刷电机应用在风扇以及分机等设备上时，可以利用设备自身的风对驱动板2上元器件进行散热，从而进一步提高无刷电机的整体的散热效率。
第二方面，本申请提供的一种吹风机，参照图4和图5，包括壳体11以及直流无刷电机，壳体11包括依次设置的入风段12、发热段13以及出风段14，电机安装于发热段13与入风段12之间，并且驱动板2的朝向为从电机至发热段13的方向，在电机朝向入风段12的一侧安装有风扇组件15，在本申请实施例中，风扇组件15具有安装在入风段12内的扇叶(图中未示出)，在扇叶由电机带动转动时，可以将风从入风段12吹向出风段14，但是由于驱动板2的长度方向与壳体11内部风向一致，所以从风扇组件15吹向出风段14的 风可以流经驱动板2上的驱动器件，此时便可以对驱动板2上的驱动器件进行散热，从而加快驱动板2上驱动器件的散热效率。
另外，在壳体11内壁上安装有温度传感器16，并且温度传感器16安装在发热段13与电机之间，由于吹风机在使用过程中，驱动板2上的驱动器件是持续发热，并且温度会持续上升，所以在检测到壳体11内部的温度持续上升时，为了确保驱动板2的驱动器件温度不会过高，所以在壳体11且位于发热段13与电机之间的内壁上安装有用于将壳体11内部风向导向驱动板2上的导风组件；当检测到壳体11内且位于发热段13与电机之间的内部空间温度升高时，可以通过导风组件进行调整壳体11且位于发热段13与电机之间的风向，使得更多的风吹向驱动板2上的驱动器件，从而可以确保对于驱动板2的驱动器件的散热效率。
在本申请实施例中，参照图4和图5，导风组件包括倾斜设置于壳体11相对两侧内壁上的导风片17，导风片17设置有2个，并且导风片17安装在壳体11平行于驱动板2集成有驱动器件的侧面的内壁上；当壳体11内部的风吹向导风片17上，由于导风片17是倾斜设置的，便可以使得吹到导风片17上的风吹向壳体11中间，从而实现改变风向，使得更多的风吹向驱动板2。
参照图4和图5，为了使得吹到导风片17上的风可以更加顺畅导向驱动板2上，将导风片17设置为弧形，并且导风片17朝向驱动板2一侧呈凹弧；同时，在导风片17远离驱动板2一侧侧面上且沿着导风片17的长度方向依次间隔安装有多个磁吸块18，在本实施例中磁吸块18安装有3个，并且磁吸块18采用金属块，相应的，在壳体11内壁上且对应磁吸块18的位置均安装有电磁铁19，电磁铁19的数量与磁吸块18的数量一致。
在吹风机的使用过程中，当吹风机开始使用时，此时距离电机距离最远的电磁铁19通电，此时电磁铁19将距离电机最远的磁吸块18吸附，便可以使得导风片17紧贴壳体11内壁；当温度传感器16检测到壳体11内部的温度上升一定时，此时距离电机距离最远的电磁铁19断电，并且将中间的电磁铁19进行通电，此时距离电机距离最远的电磁铁19与距离电机最远的磁吸块18脱离，中间的电磁铁19将中间的磁吸块18吸附，从而便可以导风片17朝向驱动板2弯曲，从而可以将使得吹到导风片17上的风吹向驱动板2上，对驱动板2的驱动器件进行散热；随着温度持续升高，只有最靠近电机的电磁铁19通电时，中间的电磁铁19将中间的磁吸块18脱离，最靠近电机的电磁铁19将最靠近电机的磁吸块18吸附，此时导风片17与壳体11内壁的夹角进一步增加，可以将更多的风导向驱动板2上，从而在温度上升时确保驱动板2上驱动器件的温度；最后，当三个电磁铁19都断电时，此时导风片17与壳体11内壁的夹角最大，此时能够将导向驱动板2的风量最多；通过上述过程，在 壳体11内部温度达到不同温度阈值时，还可以调整导风片17的倾斜角度，从而实现对吹到驱动板2上风量的调节，确保对于驱动板2的驱动器件的散热效率。
在本申请其他实施例中，参照图6，导风组件安装于壳体11平行于驱动板2集成有驱动器件侧面的内壁上的弹性层20，并且在弹性层20与壳体11内壁之间形成有容纳腔，容纳腔内装有有预热膨胀的汽化液，在本实施例中，汽化液采用消防常用到的全氟己酮。
参照图6，在壳体11的内部温度升高，由于容纳腔内部的汽化液遇热慢慢汽化，从而使得容纳腔内部的气压大于壳体11内部的气压，弹性层20便朝向驱动板2的方向凸起，在壳体11内部的风吹向出风段14时，由于风受到凸起的弹性层20导向，从而往壳体11内部的驱动板2流动，从而便可以增加吹向驱动板2上的风量；另外为了在汽化液受热汽化时可以对弹性层20的凸起方向进行限制，使得可以将更多的风导向驱动板2，弹性层20呈凸出壳体11内壁的弧形，在壳体11内壁沿弹性层20外侧延伸形成有限位弧形片21，并且弹性层20两端均有限位弧形片21；在汽化液受热汽化时，限位弧形片21可以弹性层20的凸起方向进行限制，使得弹性层20更多的往驱动板2方向凸起，从而可以将更多的风导向驱动板2，从而可以提高驱动板2上驱动器件的散热效率。
本申请实施例一种吹风机的实施原理为：在吹风机的使用过程中，电机电动风扇组件15在壳体11内转动，将风从入风段12吹向吹风段过程中，虽然驱动板2上的驱动器件处于持续发热的过程中，但是由于驱动板2的长度方向与壳体11内部风向一致，所以从风扇组件15吹向出风段14的风可以流经驱动板2上的驱动器件，从而可以加快驱动板2上驱动器件的散热效率；当检测到壳体11内且位于发热段13与电机之间的内部空间温度升高时，可以通过导风组件进行调整壳体11且位于发热段13与电机之间的风向，使得更多的风吹向驱动板2上的驱动器件，从而可以确保对于驱动板2的驱动器件的散热效率。
以上均为本申请的较佳实施例，并非依此限制本申请的保护范围，故：凡依本申请的结构、形状、原理所做的等效变化，均应涵盖于本申请的保护范围之内。

Claims (10)

  1. 一种直流无刷电机，包括主体(1)以及驱动器，其特征在于，所述驱动器包括用于集成驱动器件的驱动板(2)、用于接线的接线板(3)以及用于集成控制元器件的控制板，所述接线板(3)设置于所述主体(1)的定子端，所述驱动板(2)设置于所述接线板(3)远离所述主体(1)的一侧上，所述驱动板(2)所在平面与所述主体(1)的定子端朝向所述接线板(3)的延伸方向平行设置，所述驱动板(2)分别电连接于所述接线板(3)以及所述控制板。
  2. 根据权利要求1所述的一种直流无刷电机，其特征在于，所述驱动板(2)朝向所述接线板(3)的一侧上设置有延伸安装段(5)，所述接线板(3)上设置有供所述延伸安装段(5)嵌入的条形槽(6)。
  3. 根据权利要求2所述的一种直流无刷电机，其特征在于，所述延伸安装段(5)设置有第一导电层，所述条形槽(6)内壁对应第一导电层的位置设置有第二导电层(7)，在所述延伸安装段(5)嵌入所述条形槽(6)时，所述第一导电层与第二导电层(7)电连接。
  4. 根据权利要求1所述的一种直流无刷电机，其特征在于，所述驱动板(2)表面设置有用于将所述驱动板(2)连接外部电路的接口端子(10)。
  5. 一种吹风机，包括壳体(11)以及权利要求1-4任一项所述的直流无刷电机，其特征在于，所述壳体(11)包括依次设置的入风段(12)、发热段(13)以及出风段(14)，所述电机设置于所述发热段(13)与所述入风段(12)之间，且所述驱动板(2)位于所述电机朝向所述发热段(13)一侧上，所述电机朝向所述入风段(12)一侧设置有风扇组件(15)，所述壳体(11)的内壁上设置有用于将壳体(11)内部的风导向至驱动板(2)的导风组件。
  6. 根据权利要求5所述的一种吹风机，其特征在于，所述导风组件包括倾斜设置于壳体(11)相对两侧内壁上的导风片(17)。
  7. 根据权利要求6所述的一种吹风机，其特征在于，所述导风片(17)远离所述驱动板(2)的一侧设置有多个磁吸块(18)，所述壳体(11)内壁上对应所述磁吸块(18)的位置均设置有电磁铁(19)，所述壳体(11)内壁上设置有温度传感器(16)。
  8. 根据权利要求7所述的一种吹风机，其特征在于，所述导风片(17)设置为弧形，且所述导风片(17)朝向所述驱动板(2)一侧呈凹弧。
  9. 根据权利要求5所述的一种吹风机，其特征在于，所述导向组件包括设置于所述壳体(11)的内壁上的弹性层(20)，所述弹性层(20)与所述壳体(11)内壁之间形成有容纳腔，所述容纳腔内设置有预热膨胀的汽化液。
  10. 根据权利要求9所述的一种吹风机，其特征在于，所述弹性层(20)呈凸出所述壳体 (11)内壁的弧形，所述壳体(11)内壁沿所述弹性层(20)外侧延伸设置有限位弧形片(21)，且所述弹性层(20)两端均设置有所述限位弧形片(21)。
PCT/CN2022/134427 2022-04-25 2022-11-25 一种直流无刷电机及应用该电机的吹风机 WO2023207061A1 (zh)

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CN219086955U (zh) * 2022-04-25 2023-05-26 深圳盈特创智能科技有限公司 一种集成的高速直流无刷电机
CN114977673A (zh) * 2022-04-25 2022-08-30 深圳盈特创智能科技有限公司 一种直流无刷电机及应用该电机的吹风机
CN116733784B (zh) * 2023-06-15 2024-02-23 东莞市乐美智能科技有限公司 一种电吹风直流风机调转速控制器及控制系统

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