WO2021052313A1 - 一种带有反吹清灰功能的吹风机 - Google Patents

一种带有反吹清灰功能的吹风机 Download PDF

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Publication number
WO2021052313A1
WO2021052313A1 PCT/CN2020/115283 CN2020115283W WO2021052313A1 WO 2021052313 A1 WO2021052313 A1 WO 2021052313A1 CN 2020115283 W CN2020115283 W CN 2020115283W WO 2021052313 A1 WO2021052313 A1 WO 2021052313A1
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WIPO (PCT)
Prior art keywords
fan module
microcontroller
reverse
button
module
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Application number
PCT/CN2020/115283
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English (en)
French (fr)
Inventor
林�源
Original Assignee
深圳市物种起源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市物种起源科技有限公司 filed Critical 深圳市物种起源科技有限公司
Priority to JP2022515618A priority Critical patent/JP2022547199A/ja
Priority to EP20864340.3A priority patent/EP4014783A4/en
Publication of WO2021052313A1 publication Critical patent/WO2021052313A1/zh
Priority to US17/693,582 priority patent/US20220192340A1/en

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Classifications

    • 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
    • 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
    • A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A45D20/30—Electric circuitry specially adapted for hair drying devices
    • 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
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0853—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load specially adapted for motors rotating in both directions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/04—Arrangements for controlling or regulating the speed or torque of more than one motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/04—Arrangements for controlling or regulating the speed or torque of more than one motor
    • H02P2006/045—Control of current

Definitions

  • This application relates to the technical field of hair care equipment, in particular to a hair dryer with a back-blowing and ash cleaning function.
  • the electric hair dryer currently on the market consists of a shell, a brushed motor, a fan blade, a heating resistance wire and a switch arranged in the shell.
  • the shell has an air inlet and an air outlet, and an air inlet baffle is arranged on the air inlet. A number of air inlet holes are arranged on the air inlet baffle.
  • the air inlet of the air inlet baffle is often blocked by foreign matter such as hair and dust, resulting in a reduction in the air inlet of the housing. Therefore, the user needs to remove the hair, dust, etc. on the air inlet.
  • the foreign matter is cleaned to keep the air inlet unobstructed, but the number of air inlets is so large that users need to dredge the air inlets one by one, resulting in low dust removal efficiency, so there are certain improvements.
  • the purpose of this application is to provide a blower with a back-blowing and dust-removing function, which has the characteristics of high dust-removal efficiency.
  • a blower with a reverse blowing and dust removal function comprising a shell, a fan module, an air inlet and an air outlet, the air inlet and the air outlet are arranged on the shell, and the shell is between the air inlet and the air outlet A through air flow channel is formed, the fan module is arranged in the air flow channel of the housing, a circuit control board is arranged in the housing, the circuit control board is connected to the fan module, and the housing is provided with a circuit control board The trigger part connected to control the forward or reverse rotation of the fan module.
  • the trigger can control the forward rotation of the fan module, and the fan module introduces air from the air inlet and blows it out from the air outlet to achieve the purpose of drying the hair.
  • the trigger part can be used to control the fan module to rotate in the reverse direction, and then the fan module can introduce air from the air outlet and blow it out from the air inlet, thereby facilitating blocking
  • the hair, dust and other foreign objects on the air inlet are blown off in reverse, abandoning the traditional way of manually cleaning the air inlet by users, thereby improving the efficiency of cleaning the air inlet.
  • the circuit control board is provided with a microcontroller and a power drive module, the power drive module is connected to the fan module, the microcontroller is connected to the power drive module, and the trigger unit is connected to the microcontroller.
  • the micro-controller and the power drive module are set up, when the user triggers the trigger unit, the micro-controller can drive the fan module to rotate through the power drive module.
  • the trigger part includes a reverse button and a forward button which are provided on the housing and connected to the microcontroller;
  • the microcontroller responds to the forward rotation signal output by the forward rotation button to control the fan module to rotate forward through the power drive module, and the microcontroller responds to the reverse rotation signal output by the reverse button to control the fan module through the power drive module Reverse rotation, wherein the microcontroller only responds to the reverse rotation signal output by the reverse rotation button when the forward rotation button is not triggered.
  • the forward rotation button is triggered to make the fan module rotate in the forward direction, and the fan module introduces air from the air inlet and blows it out from the air outlet.
  • the reverse button can be triggered to control the reverse rotation of the fan module, and the fan module can introduce air from the air outlet and blow it out from the air inlet. , So that it is convenient to blow off foreign objects such as hair and dust that are blocked on the air inlet.
  • the separate setting of the forward button and the reverse button improves the user's operating convenience.
  • the fan module includes a brushless motor and a fan blade arranged on the output shaft of the brushless motor, and the brushless motor is electrically connected to the power drive module.
  • the power drive module drives the brushless motor to rotate forward or backward at a high speed, and then the air flow can be formed through the fan blades to realize the positive flow of air from the air inlet and the air outlet, and from the air outlet Into the air, the air from the air inlet flows in the reverse direction, so as to realize the use of the blower function of the air blower in the forward flow of air, and the reverse air flow of the air blower to the air inlet to use the ash removal function.
  • a mounting sleeve is provided in the air flow channel, the brushless motor is coaxially arranged in the mounting sleeve, and the mounting sleeve has a plurality of air ducts distributed circumferentially around the brushless motor, and the air ducts are connected to the fan respectively.
  • the leaf is opposite to the air inlet.
  • the air flow can be converged and guided to improve the concentration of the air volume.
  • the hair dryer blows the air, it ensures the concentration of the air volume of the air outlet.
  • the blower performs reverse blowing and cleaning, it can improve the aggregation of the amount of reverse blowing, so as to effectively blow off the dust, hair and other foreign objects at the air inlet.
  • an air inlet baffle is provided on the air inlet, a plurality of air inlet holes are provided on the air inlet baffle, and a sponge filter is provided on the inner side of the air inlet baffle.
  • the reversal button is a key button
  • the microcontroller responds to the reversal signal output by the reversal button to output a modulation control signal to the power drive module, and the power drive module controls the fan module to reverse at a preset speed. To rotate.
  • the fan module when the reversing button is triggered, the fan module can rotate in the reverse direction at a preset speed, thereby realizing back blowing and dust removal at a fixed speed, with a simple structure and convenient operation.
  • the reversal button is a stepless adjustment switch
  • the microcontroller responds to the reversal signal output by the reversal button to output a modulation control signal to the power drive module, and the fan module is controlled by the power drive module to adjust The speed rotates in the opposite direction.
  • the reversing button is a stepless adjustment switch
  • the adjustment control of the reversing speed is realized with the adjustment of the stepless adjustment switch, so as to facilitate the user to make reasonable adjustments according to the foreign body blockage.
  • Reverse wind speed adjustment to realize the adjustment of the intensity of back-blowing and cleaning, with high adaptability.
  • the forward rotation button is a stepless adjustment switch
  • the microcontroller responds to the forward rotation signal output by the forward rotation button to output a modulation control signal to the power drive module, and the fan module is controlled by the power drive module to adjust The speed rotates in the positive direction.
  • the forward rotation button is the setting of a stepless adjustment switch.
  • the adjustment control of the forward rotation speed can be realized, and the adjustment of the wind speed of the air outlet can be realized, and the adaptability is high.
  • a current detection circuit and a rotation speed detection circuit are connected to the microcontroller, the circuit detection circuit is connected to the power drive module for obtaining the current input current of the fan module, and the rotation speed detection circuit is connected to the fan module for Get the current speed of the fan module;
  • the microcontroller is used to control the hair dryer to enter the ash cleaning detection mode.
  • the microcontroller is triggered based on the forward rotation button to trigger the current rotation speed and current input current of the fan module, and change the current rotation speed to The current input current is compared with the rated input current at the rated speed to control the fan module to enter the pending cleaning state;
  • the microcontroller controls the fan module to rotate reversely for a preset time after a preset time when the forward rotation button is not triggered.
  • the current detection circuit is used to detect the current input current of the fan module in real time
  • the rotation speed detection circuit is used to detect the current rotation speed of the fan module.
  • the microcontroller controls the fan module to reversely rotate the fan module for a preset time after the blower is not blowing for a preset time, so as to blow off the hair, dust and other foreign objects on the air inlet in the reverse direction to achieve reverse blowing.
  • the purpose of ash is not limited to.
  • a selection switch connected to the microcontroller is further provided on the housing, and the selection switch is configured to have an automatic cleaning mode and a manual cleaning mode;
  • the reverse button can be manually activated
  • the microcontroller controls the blower to enter the cleaning detection mode.
  • the user can independently select the ash cleaning mode, which improves the convenience of using the blow-back ash cleaning function of the hair dryer.
  • the power drive module includes a rectifier unit, a filter unit, and an inverter unit, the inverter unit is respectively connected to the filter unit and the fan module, and the inverter unit receives the modulation control signal output by the microcontroller to control The fan module operates.
  • the microcontroller outputs a modulation control signal to the inverter unit, and the inverter unit can control the forward rotation, reverse rotation and speed adjustment of the fan module.
  • this application can trigger the reverse button to control the reverse rotation of the fan module, and then the fan module can introduce air from the air outlet from the inlet
  • the air inlet is blown out to facilitate the reverse blowing of foreign matter such as hair and dust blocked on the air inlet, which abandons the traditional way of manually cleaning the air inlet by users, thereby improving the efficiency of cleaning the air inlet.
  • Fig. 1 is a schematic diagram of a first overall structure of a hair dryer according to an embodiment of the present application
  • Fig. 2 is a schematic diagram of a second overall structure of a hair dryer according to an embodiment of the present application
  • Figure 3 is a cross-sectional view of a hair dryer according to an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a hair dryer with a selector switch according to an embodiment of the present application
  • Figure 5 is a circuit diagram of a circuit control board according to an embodiment of the present application.
  • Fig. 6 is a circuit diagram of a power drive module according to an embodiment of the present application.
  • a blower with a reverse blowing and dust removal function includes a housing 1, a fan module 2, a heating module 3, an air inlet 4 and an air outlet 5.
  • the housing 1 is cylindrical, the air inlet 4 is provided at the lower end of the housing 1, and the air outlet 5 is provided at the upper end of the housing 1.
  • the housing 1 forms a through airflow channel 6 between the air inlet 4 and the air outlet 5 for heating
  • the module 3 and the fan module 2 are arranged in the air flow channel 6 of the housing 1 in sequence, the fan module 2 is close to the air inlet 4 side, and the heating module 3 is close to the air outlet 5 side.
  • the fan module 2 includes a brushless motor 21 and a fan blade 22 arranged on the output shaft of the brushless motor 21.
  • the brushless motor 21 is a neodymium iron boron outer rotor brushless motor 21 with high energy density
  • the fan blades 22 are made of composite materials.
  • the brushless motor 21 has a stator composed of a single layer of 0.2mm ultra-thin silicon steel laminates and a motor rotor composed of multiple neodymium iron boron magnets. Compared with the carbon brush motor with ferrite magnets, the volume can be reduced under the same power Shrink more than 10 times.
  • a shock-absorbing rubber sleeve 7 is arranged in the air flow channel 6, a mounting sleeve 8 is arranged in the shock-absorbing rubber sleeve 7, and the brushless motor 21 is coaxially arranged in the mounting sleeve 8, and the mounting sleeve 8 is circumferentially spaced around the brushless motor 21.
  • Several air ducts 9 are opposite to the fan blade 22 and the air inlet 4 respectively.
  • the air inlet 4 is provided with an air inlet baffle 10 through screws, a plurality of air inlet holes 11 are provided on the air inlet baffle 10, and a sponge filter is arranged on the inner side of the air inlet baffle 10, and the air inlet baffle
  • the plate 10 can block large particles of foreign matter, and the sponge filter can block fine and small particles of foreign matter such as dust and hair.
  • a circuit control board 12 is fixed in the housing 1.
  • the circuit control board 12 is located between the air inlet 4 and the fan module 2. When air flows in from the air inlet 4, it passes through the circuit control board. 12.
  • the circuit control board 12 can be cooled down.
  • the circuit control board 12 is connected to the fan module 2, and the casing 1 is provided with a trigger part connected to the circuit control board 12 for controlling the forward or reverse rotation of the fan module 2.
  • the trigger unit can control the forward or reverse rotation of the fan module 2.
  • the triggering unit controls the fan module 2 to rotate forward or reverse in any form.
  • the triggering part may adopt a physical button, by pressing the triggering part once to control the forward rotation of the fan module, and quickly pressing the triggering part twice to control the reverse rotation of the fan module 2.
  • the trigger unit can adopt a touch button, and the logic for controlling the forward or reverse rotation of the fan module 2 can be customized according to the needs of the user.
  • the circuit control board 12 is provided with a microcontroller 121 and a power drive module 122.
  • the power drive module 122 is connected to the fan module 2, and the power drive module 122 is electrically connected to the brushless motor 21 of the fan module 2.
  • the microcontroller 121 is connected to the power driving module 122. 1 and 2, when the trigger part is a physical button, the trigger part may include a reverse button 13 and a forward button 14 that are provided on the housing 1 and connected to the microcontroller 121. Thus, when the forward rotation button 14 is triggered, the microcontroller 121 responds to the forward rotation signal output by the forward rotation button 14 to output a modulation control signal to the power drive module 122 to control the fan module 2 to rotate forward through the power drive module 122.
  • the microcontroller 121 When the reversal button 13 is triggered, the microcontroller 121 responds to the reversal signal output by the reversal button 13 to output a modulation control signal to the power driving module 122 to control the fan module 2 to rotate in reverse through the power driving module 122.
  • the microcontroller 121 responds to the reverse signal output by the reverse button 13 only when the forward button 14 is not triggered, that is, the user presses the forward button 14 to control the fan module 2 to rotate forward, even if the user triggers
  • the reversal button 13, and the microcontroller 121 also does not respond to the reversal signal output by the reversal button 13 to control the fan module 2 to perform actions. In other words, the microcontroller 121 has a higher priority for the forward rotation signal than for the reverse rotation signal.
  • the power driving module 122 is used to provide power to the fan module 2 and drive the fan to rotate in response to the modulation control signal (PWM signal) output by the microcontroller 121.
  • the power driving module 122 includes a rectifier unit, a filter unit, and an inverter unit.
  • the rectifier unit has an input terminal and an output terminal. The input terminal of the rectifier unit is connected to a 220V AC mains through a plug, and the output terminal of the rectifier unit is coupled to the filter unit.
  • the inverter unit is composed of 6 power transistors (Q1 ⁇ Q6).
  • the inverter unit has an input terminal, an output terminal and a control terminal.
  • the input terminal of the inverter unit is coupled to the filter unit.
  • the output terminal is coupled to the brushless motor 21 of the fan module 2, and the control terminal of the inverter unit is coupled to the microcontroller 121 to receive the modulation control signal to control the action of the fan module 2.
  • the brushless motor 21 is provided with a Hall sensor for sensing the position of the rotor.
  • the microcontroller 121 In order to make the brushless motor 21 rotate, the microcontroller 121 detects the position of the rotor according to the Hall sensor, and then determines the order of turning on (or turning off) the power transistors in the inverter unit according to the stator winding, so that the current flows through the motor coils in sequence A forward (or reverse) rotating magnetic field is generated and interacts with the magnet of the rotor, so that the brushless motor 21 can rotate clockwise/counterclockwise (forward/reverse). At the same time, the microcontroller 121 modulates its output modulation control signal, which can change the frequency of the stator rotating magnetic field, and can change the rotation speed of the rotor to realize the control of the rotation speed of the fan module 2.
  • the inverter unit can invert the DC power converted by the rectifier unit and the filter unit into AC power for use by the brushless motor 21, and realize the forward and reverse rotation of the fan module 2 based on the modulation control signal output by the microcontroller 121.
  • Directional rotation and speed control can be used to control the fan module 2 based on the modulation control signal output by the microcontroller 121.
  • the forward rotation button 14 is a stepless adjustment switch, and the microcontroller 121 responds to the forward rotation signal output by the forward rotation button 14 to output a modulation control signal to the power drive module 122, and controls the fan through the power drive module 122 Module 2 rotates forward at the adjusted speed.
  • the forward rotation button 14 is a multi-position switch, and the microcontroller 121 responds to the forward rotation signal output by the forward rotation button 14 to output a modulation control signal to the power drive module 122, and is controlled by the power drive module 122 The fan module 2 rotates in the positive direction at each gear.
  • the reversal button 13 is a button button, and the microcontroller 121 responds to the reversal signal output by the reversal button 13 to output a modulation control signal to the power drive module 122, and the fan module 2 is controlled by the power drive module 122 Reverse rotation at the preset speed.
  • the reversal button 13 is a stepless adjustment switch, and the microcontroller 121 responds to the reversal signal output by the reversal button 13 to output a modulation control signal to the power drive module 122, which is controlled by the power drive module 122 The fan module 2 rotates in reverse at a regulated speed.
  • the fan module 2 can be controlled to rotate at a high speed and reverse at a high speed by triggering the reversal button 13, so that the fan module 2 can remove the air from the air.
  • the air inlet 5 is introduced and blown out from the air inlet 4 to blow off the hair, dust and other foreign objects blocked on the air inlet 4 in reverse, abandoning the traditional way of manually cleaning the air inlet 4 by the user, thereby increasing the air inlet 4 The efficiency of cleaning dust.
  • the housing 1 is also provided with a selector switch 15 connected to the microcontroller 121, and the selector switch 15 is configured to have an automatic cleaning mode and a manual cleaning mode.
  • the reverse button 13 can be manually activated, and the user can control the fan module 2 to reverse rotation by manually triggering the reverse button 13.
  • the microcontroller 121 controls the blower to enter the cleaning detection mode.
  • the cleaning detection mode in the automatic cleaning mode will be described in detail below.
  • a current detection circuit and a rotation speed detection circuit are connected to the microcontroller 121.
  • the circuit detection circuit is connected to the power drive module 122 for obtaining the current input current of the fan module 2
  • the rotation speed detection circuit is connected to the fan module 2 for obtaining the current input of the fan module 2.
  • the Hall sensor can detect the rotation position of the rotor of the brushless motor 21 in the fan module 2, and the rotation speed detection circuit can obtain the current rotation speed of the fan module 2 based on the Hall sensor.
  • the microcontroller 121 controls the blower to enter the cleaning detection mode, and in the cleaning detection mode, the microcontroller 121 will calculate and judge the current speed and the current input current.
  • the microcontroller 121 compares the current input current at the current speed with the rated input current at the rated speed based on the current rotation speed and the current input current of the fan module 2 triggered by the forward rotation button 14 to control the fan module 2 to enter pending Clean state.
  • the fan module 2 After the user triggers the forward rotation button 14, the fan module 2 is controlled to rotate, and the rotation speed of the fan module 2 is the rotation speed adjusted by the forward rotation button 14.
  • the following description takes the forward rotation button 14 in one of the adjustment gears as an example, where the forward rotation button 14 has a rated speed and a rated input current in the adjustment gear.
  • the microcontroller 121 will increase the current input current of the fan module 2 to increase the power of the fan module 2 to maintain the current speed of the fan module 2 at the rated speed. This compares the current input current with the rated input current. When the current input current exceeds the error range of the rated input current, it indicates that the air inlet 4 is blocked by foreign objects such as dust and hair, and the microcontroller 121 will control the blower to enter the pending cleaning status.
  • the microcontroller 121 controls the fan module 2 to rotate reversely for a preset time after the preset time when the forward rotation button 14 is not triggered.
  • the preset time when the forward rotation button 14 is not triggered is 5 minutes
  • the preset time for the fan module 2 to rotate in the reverse direction is 5 seconds.
  • the setting of the selector switch 15 enables the user to choose independently.
  • the microcontroller 121 controls the blower to automatically perform the reverse blowing and cleaning function, without the user separately triggering the reverse button 13, which improves the back blowing and cleaning function Ease of use.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cleaning And Drying Hair (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本申请公开了一种带有反吹清灰功能的吹风机，包括壳体、风机模块、进风口和出风口，壳体在进风口和出风口之间形成贯通的气流通道，风机模块设置在壳体的气流通道中，壳体内设置有线路控制板，线路控制板上设置有微控制器和电源驱动模块，电源驱动模块与风机模块相连，微控制器与电源驱动模块相连，壳体上设置有与微控制器相连的反转按钮和正转按钮；微控制器响应于正转按钮输出的正转信号以通过电源驱动模块控制风机模块正向转动，微控制器响应于反转按钮输出的反转信号以通过电源驱动模块控制风机模块反向转动；微控制器仅在正转按钮未被触发时响应于反转按钮输出的反转信号。本申请具有清灰效率高的特点。

Description

一种带有反吹清灰功能的吹风机 技术领域
本申请涉及头发护理设备的技术领域，特别涉及一种带有反吹清灰功能的吹风机。
背景技术
在头发护理干发和头发造型时，一般采用电吹风的头发护理器具。现在市面上使用的电吹风包括壳体、设置在壳体内的有刷电机、扇叶、加热电阻丝以及开关构成，壳体上具有进风口和出风口，进风口上设置有进风档板，进风档板上设置有若干进风孔。在电吹风接入市电电源后，闭合开关，有刷电机带动扇叶旋转推进空气，空气经过通电的加热电阻丝被加热，最终从出风口吹出以达到干发、头发造型等目的。
但电吹风在长期使用之下，常常会因为毛发、灰尘等异物堵塞住进风档板的进风孔，导致壳体的进风量减少，因此，需要用户将进风孔上的毛发、灰尘等异物进行清理，来保持进风口的通畅，但进风孔数量繁多，需要用户逐一对进风孔进行疏通，致使清灰效率较低，因此存在一定的改进之处。
发明内容
针对现有技术存在的不足，本申请的目的在于提供一种带有反吹清灰功能的吹风机，具有清灰效率高的特点。
本申请的上述技术目的是通过以下技术方案得以实现的：
一种带有反吹清灰功能的吹风机，包括壳体、风机模块、进风口和出风口，所述进风口和出风口设置在壳体上，所述壳体在进风口和出风口之间形成贯通的气流通道，所述风机模块设置在壳体的气流通道中，所述壳体内设置有线路控制板，所述线路控制板与风机模块相连，所述壳体上设置有与线路控制板相连以用于控制风机模块正转或反转的触发部。
通过上述技术方案，触发能够控制风机模块正向转动，风机模块将空气从进风口引入从出风口吹出达到吹干头发的目的。当毛发、灰尘等异物堵塞在进风口上导致出风口的风量较小时，能够通过触发部控制风机模块反向转动，进而风机模块能够将空气从出风口引入从进风口吹出，从而方便将被阻挡在进风口上的毛发、灰尘等异物反向吹落，摒弃了传统用户手动对进风口进行清理的方式，由此提高了进风口的清灰效率。
优选地，所述线路控制板上设置有微控制器和电源驱动模块，所述电源驱动模块与风机模块相连，所述微控制器与电源驱动模块相连，所述触发部与微控制器相连。
通过上述技术方案，微控制器和电源驱动模块的设置，在用户触发触发部时，微控 制器能够通过电源驱动模块驱使风机模块转动。
优选地，所述触发部包括设置在壳体上与微控制器相连的反转按钮和正转按钮；
所述微控制器响应于正转按钮输出的正转信号以通过电源驱动模块控制风机模块正向转动，所述微控制器响应于反转按钮输出的反转信号以通过电源驱动模块控制风机模块反向转动，其中所述微控制器仅在正转按钮未被触发时响应于反转按钮输出的反转信号。
通过上述技术方案，正转按钮被触发以使风机模块正向转动，风机模块将空气从进风口引入从出风口吹出。当毛发、灰尘等异物堵塞在进风口上导致出风口的风量较小时，能够通过触发反转按钮，反转按钮控制风机模块反向转动，进而风机模块能够将空气从出风口引入从进风口吹出，从而方便将被阻挡在进风口上的毛发、灰尘等异物反向吹落。正转按钮和反转按钮的分开设置提高了用户的操作便利性。
优选地，所述风机模块包括无刷电机以及设置在无刷电机输出轴上的扇叶，所述无刷电机电连接于电源驱动模块。
通过上述技术方案，电源驱动模块驱使无刷电机高速正向转动或反向转动，进而通过扇叶能够形成空气流动，实现从进风口进风出风口出风的空气正向流动，以及从出风口进风，进风口出风的空气反向流动，从而实现空气正向流动中，吹风机吹风功能的使用，空气反向流动，吹风机对进风口反吹清灰功能的使用。
优选地，所述气流通道中设置有安装套，所述无刷电机同轴设置在安装套中，所述安装套围绕无刷电机周向间隔分布有若干风道，所述风道分别与扇叶和进风口相对。
通过上述技术方案，扇叶通过无刷电机驱动正向转动和反向转动时，空气都流进风道，通过风道的设置，能够对空气流动进行汇聚与引导，提高风量的集中性，在吹风机进行吹风时，保证了出风口风量的聚集性。在吹风机进行反吹清灰时，能够提高反吹风量的聚集性，以有效将进风口的灰尘、毛发等异物吹落。
优选地，所述进风口上设置有进风档板，所述进风档板上设置有若干进风孔，所述进风档板的内侧设置有海绵滤网。
通过上述技术方案，风机模块正向转动时，空气从进风口进入，大颗粒的异物被进风孔阻挡在外，灰尘、毛发等细软异物被海绵滤网阻挡在外，由此，当风机模块反向转动时，空气从进风口吹出，从而方便被阻挡的异物从海绵滤网、以及进风孔上被吹落。
优选地，所述反转按钮为按键按钮，所述微控制器响应于反转按钮输出的反转信号以输出调制控制信号至电源驱动模块，并通过电源驱动模块控制风机模块以预设转速反向转动。
通过上述技术方案，反转按钮被触发时，风机模块能够以预设转速反向转动，从而以一个固定的转速实现反吹清灰，结构简单，操作方便。
优选地，所述反转按钮为无级调节开关，所述微控制器响应于反转按钮输出的反转信号以输出调制控制信号至电源驱动模块，并通过电源驱动模块控制风机模块以调节的转速反向转动。
通过上述技术方案，反转按钮为无级调节开关时，从而使得风机模块在反转时，随着无级调节开关的调节实现反转转速的调节控制，从而方便用户根据异物堵塞的情况进行合理反转风速调节，实现反吹清灰强度的调节，适应性高。
优选地，所述正转按钮为无级调节开关，所述微控制器响应于正转按钮输出的正转信号以输出调制控制信号至电源驱动模块，并通过电源驱动模块控制风机模块以调节的转速正向转动。
通过上述技术方案，正转按钮为无级调节开关的设置，通过正转按钮的设置，能够实现正转转速的调节控制，实现出风口风速的调节，适应性高。
优选地，所述微控制器上连接有电流检测电路和转速检测电路，所述电路检测电路连接于电源驱动模块用于获取风机模块的当前输入电流，所述转速检测电路连接于风机模块用于获取风机模块的当前转速；
所述微控制器用于控制该吹风机进入清灰检测模式，在清灰检测模式中，所述微控制器基于正转按钮被触发下风机模块的当前转速和当前输入电流，并将当前转速下的当前输入电流与额定转速下的额定输入电流进行比较，以控制风机模块进入待定清灰状态；
在待定清灰状态中，所述微控制器在正转按钮未被触发的预设时间后控制风机模块反向转动预设时间。
通过上述技术方案，电流检测电路用于实时检测风机模块的当前输入电流，转速检测电路用于检测风机模块的当前转速。在微控制器控制该吹风机进入清灰检测模式中时，微控制器能够将当前转速和当前输入电流与额定转速和额定输入电流进行比较。由于风机模块以恒定转速转动，因此当气流通道中风阻提高时，将导致风机模块的当前转速下降，微控制器将当前转速保持在额定转速之下，将使得风机模块的当前输入电流提高。此时将当前输入电流与额定输入电流进行比较，在当前输入电流超过额定输入电流的误差范围时，表明进风口被灰尘、毛发等异物堵塞，导致气流通道内的风阻提高。
在待定清灰状态中时，微控制器将吹风机没有进行吹风预设时间后控制风机模块反向转动预设时间，以将进风口上的毛发、灰尘等异物反向吹落，达到反吹清灰的目的。
优选地，所述壳体上还设置有与微控制器相连的选择开关，所述选择开关被配置具有自动清灰模式和手动清灰模式；
在手动清灰模式中，反转按钮能被手动启动；
在自动清灰模式中，所述微控制器控制该吹风机进入所述清灰检测模式。
通过上述技术方案，用户能够自主选择清灰模式，提高吹风机反吹清灰功能使用的便利性。
优选地，所述电源驱动模块包括整流单元、滤波单元和逆变单元，所述逆变单元分别连接于滤波单元和风机模块，所述逆变单元接收微控制器所输出的调制控制信号以控制风机模块动作。
通过上述技术方案，微控制器输出调制控制信号至逆变单元，通过逆变单元能够控制风机模块正转、反转以及转速的调节。
综上所述，本申请对比于现有技术的有益效果为：
当毛发、灰尘等异物堵塞在进风口上导致出风口的风量较小时，本申请能够通过触发反转按钮，反转按钮控制风机模块反向转动，进而风机模块能够将空气从出风口引入从进风口吹出，从而方便将被阻挡在进风口上的毛发、灰尘等异物反向吹落，摒弃了传统用户手动对进风口进行清理的方式，由此提高了进风口的清灰效率。
附图说明
图1为根据本申请一个实施方案的吹风机的第一整体结构示意图；
图2为根据本申请一个实施方案的吹风机的第二整体结构示意图；
图3为根据本申请一个实施方案的吹风机的剖视图；
图4为根据本申请一个实施方案的带有选择开关的吹风机的结构示意图；
图5为根据本申请一个实施方案的线路控制板电路图；
图6为根据本申请一个实施方案的电源驱动模块的电路图。
附图标记：1、壳体；2、风机模块；21、无刷电机；22、扇叶；3、加热模块；4、进风口；5、出风口；6、气流通道；7、减震橡胶套；8、安装套；9、风道；10、进风档板；11、进风孔；12、线路控制板；121、微控制器；122、电源驱动模块；13、反转按钮；14、正转按钮；15、选择开关。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本 申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
结合图1和图3所示，一种带有反吹清灰功能的吹风机，包括壳体1、风机模块2、加热模块3、进风口4和出风口5。壳体1呈圆柱体状，进风口4设置在壳体1的下端，出风口5设置壳体1的上端，壳体1在进风口4和出风口5之间形成贯通的气流通道6，加热模块3和风机模块2依次设置在壳体1的气流通道6中，风机模块2靠近进风口4一侧，加热模块3靠近出风口5一侧。
风机模块2包括无刷电机21以及设置在无刷电机21输出轴上的扇叶22。在一个实施方案中，无刷电机21为高能量密度的钕铁硼外转子无刷电机21，扇叶22采用复合材料制成。无刷电机21具有单层0.2mm的超薄硅钢片叠片组成的定子以及多片钕铁硼磁铁组成的电机转子，相比于铁氧体磁铁的碳刷电机，同功率情况下可以将体积缩小10倍以上。
气流通道6中设置有减震橡胶套7，减震橡胶套7中设置有安装套8，无刷电机21同轴设置在安装套8中，安装套8围绕无刷电机21周向间隔分布有若干风道9，风道9分别与扇叶22和进风口4相对。在一个实施方案中，进风口4上通过螺丝设置有进风档板10，进风档板10上设置有若干进风孔11，进风档板10的内侧设置有海绵滤网，进风档板10能够将大颗粒的异物阻挡在外，海绵滤网能够将灰尘、毛发等细软小颗粒异物阻挡在外。
因此，在吹风机长期使用之后，海绵滤网的外侧将粘附有较多的灰尘、毛发等小颗粒异物，从而造成进风口4的进风量降低，影响出风口5的出风量。由于灰尘毛发等小颗粒异物粘附在海绵滤网的外侧表面，如果逐一伸入到进风孔11将毛发夹取出来会费时费力。为此，本申请提出下述具有反吹清灰功能的吹风机来解决该问题。
具体地，结合图3和图5所示，壳体1内固定设置有线路控制板12，线路控制板12位于进风口4和风机模块2之间，空气从进风口4流入时经过线路控制板12，能够对线路控制板12进行降温。其中，线路控制板12与风机模块2相连，壳体1上设置有与线路控制板12相连以用于控制风机模块2正转或反转的触发部。
触发部能够控制风机模块2正转或反转，风机模块2正转时，空气从进风口引入从出风口吹出；反之，风机模块2反转时，空气从出风口引入从进风口吹出。触发部控制风机模块2正转或反转的形式不限。在一个实施方案中，触发部可采用实体按键，通过按压一次触发部控制风机模块正转，快速按压两次触发部控制风机模块2反转。在另一实施方案中，触发部可采用触摸按键，控制风机模块2正转或反转的逻辑可根据用户的需求自定义设置。
具体地，线路控制板12上设置有微控制器121和电源驱动模块122，电源驱动模块122与风机模块2相连，电源驱动模块122电连接于风机模块2的无刷电机21。
微控制器121与电源驱动模块122相连。参照图1和图2，在触发部为实体按键的情况下，触发部可以包括设置在壳体1上与微控制器121相连的反转按钮13和正转按钮14。由此，在触发正转按钮14时，微控制器121响应于正转按钮14输出的正转信号输出调制控制信号至电源驱动模块122，以通过电源驱动模块122控制风机模块2正向转动。在触发反转按钮13时，微控制器121响应于反转按钮13输出的反转信号输出调制控制信号至电源驱动模块122，以通过电源驱动模块122控制风机模块2反向转动。特别地，微控制器121仅在正转按钮14未被触发时才响应于反转按钮13输出的反转信号，即用户按下正转按钮14控制风机模块2正转，此时即使用户触发反转按钮13，微控制器121也不响应反转按钮13输出的反转信号来控制风机模块2进行动作。也就是说，微控制器121对于正转信号的优先级高于反转信号。
值得说明的是，风机模块2正向转动时，空气将从进风口4流入，从出风口5流出，空气在气流通道6中形成正向流动的气流，从而达到吹风机吹风功能的使用。反之，风机模块2反向转动时，空气将从出风口5流入，从进风口4流出，空气在气流通道6中形成反向流动的气流，该气流能够冲击在海绵滤网、以及进风档板10上，进而将海绵滤网和进风档板10外侧的灰尘、毛发等异物吹落，达到反向清灰的功能。
以下将对风机模块2正向转动、反向转动做详细说明。
结合图5和图6所示，电源驱动模块122用于为风机模块2提供电能并响应于微控制器121输出的调制控制信号(PWM信号)驱动风机转动。电源驱动模块122包括整流单元、滤波单元和逆变单元，整流单元具有输入端和输出端，整流单元的输入端通过插头连接在220V交流市电上，整流单元的输出端耦接于滤波单元。
在一个实施方案中，逆变单元由6个功率晶体管(Q1～Q6)组成，逆变单元具有输入端、输出端和控制端，逆变单元的输入端耦接于滤波单元，逆变单元的输出端耦接于风机模块2的无刷电机21，逆变单元的控制端耦接于微控制器121以接收调制控制信号以控制风机模块2动作。值得说明的是，无刷电机21上设置用于感应转子所在位置的霍尔传感器。为了使无刷电机21转动，微控制器121根据霍尔传感器感应到转子所在位置，进而依据定子绕线决定开启(或关闭)逆变单元中功率晶体管的顺序，使电流依序流经电机线圈产生顺向(或逆向)旋转磁场，并与转子的磁铁相互作用，如此实现无刷电机21的顺时/逆时(正向/反向)转动。同时微控制器121对其输出的调制控制信号的进行调制，即可改变定子旋 转磁场的频率，就可以改变转子的转速，实现风机模块2转速的控制。
因此，逆变单元能够通过将整流单元、滤波单元转换后的直流电逆变成交流电以供无刷电机21使用，并基于微控制器121输出的调制控制信号实现对风机模块2正向转动、反向转动以及转速的控制。
在一个实施方案中，正转按钮14为无级调节开关，微控制器121响应于正转按钮14输出的正转信号以输出调制控制信号至电源驱动模块122，并通过电源驱动模块122控制风机模块2以调节的转速正向转动。在另一个实施方案中，正转按钮14为多档位开关，微控制器121响应于正转按钮14输出的正转信号以输出调制控制信号至电源驱动模块122，并通过电源驱动模块122控制风机模块2以各个档位下转速正向转动。
在一个实施方案中，反转按钮13为按键按钮，微控制器121响应于反转按钮13输出的反转信号以输出调制控制信号至电源驱动模块122，并通过电源驱动模块122控制风机模块2以预设转速反向转动。在另一个实施方案中，反转按钮13为无级调节开关，微控制器121响应于反转按钮13输出的反转信号以输出调制控制信号至电源驱动模块122，并通过电源驱动模块122控制风机模块2以调节的转速反向转动。
由此，当毛发、灰尘等异物堵塞在进风口4上导致出风口5的风量较小时，能够通过触发反转按钮13来控制风机模块2高速反向转动，进而风机模块2能够将空气从出风口5引入从进风口4吹出，以将被阻挡在进风口4上的毛发、灰尘等异物反向吹落，摒弃了传统用户手动对进风口4进行清理的方式，由此提高了进风口4的清灰效率。
结合图4和图5所示，在一个实施方案中，壳体1上还设置有与微控制器121相连的选择开关15，选择开关15被配置具有自动清灰模式和手动清灰模式。在手动清灰模式中，反转按钮13能被手动启动，用户通过手动触发反转按钮13即可控制风机模块2进行反向转动。
在自动清灰模式中，微控制器121控制该吹风机进入清灰检测模式，以下对自动清灰模式中清灰检测模式进行详细说明。
微控制器121上连接有电流检测电路和转速检测电路，电路检测电路连接于电源驱动模块122用于获取风机模块2的当前输入电流，转速检测电路连接于风机模块2用于获取风机模块2的当前转速，霍尔传感器能够检测风机模块2中无刷电机21转子转动位置，进而转速检测电路能够基于霍尔传感器获取风机模块2的当前转速。
在自动清灰模式中，微控制器121控制该吹风机进入清灰检测模式，而在清灰检测模式中，微控制器121将对当前转速和当前输入电流进行计算判断。微控制器121基于正转 按钮14被触发下风机模块2的当前转速和当前输入电流，并将当前转速下的当前输入电流与额定转速下的额定输入电流进行比较，以控制风机模块2进入待定清灰状态。
具体地，无刷电机21的功率和转速的关系：P＝T*n/9550，其中，P是额定功率，n是额定转速(分/转)、T是额定转矩，额定功率＝额定电压*额定电流。由此，在控制无刷电机21转速恒定的情况下，若无刷电机21的转速下降，将会提高无刷电机21的功率以保持无刷电机21的转速。
用户触发正转按钮14后控制风机模块2转动，风机模块2的转速为正转按钮14调节的转速。以下以正转按钮14位于其中一个调节档位为例进行说明，其中正转按钮14在该调节档位下具有额定转速和额定输入电流。
若进风口4被灰尘、毛发等异物堵塞，导致气流通道6内的风阻提高时，将导致风机模块2转动困难，进而使得风机模块2的当前转速下降。为了将当前转速保持在额定转速，微控制器121将会提高风机模块2的当前输入电流，以提高风机模块2的功率来将风机模块2当前转速保持在额定转速。由此将当前输入电流与额定输入电流进行比较，在当前输入电流超过额定输入电流的误差范围时，表明进风口4被灰尘、毛发等异物堵塞，微控制器121将控制该吹风机进入待定清灰状态。
在待定清灰状态中，微控制器121在正转按钮14未被触发的预设时间后控制风机模块2反向转动预设时间。在一个实施方案中，正转按钮14未被触发的预设时间为5分钟，风机模块2反向转动预设时间为5秒。
选择开关15的设置，使得用户能够自主选择，在自动清灰模式中，微控制器121控制该吹风机自动进行反吹清灰功能，无需用户单独触发反转按钮13，提高了反吹清灰功能使用的便利性。
以上所述仅是本申请的示范性实施方式，而非用于限制本申请的保护范围，本申请的保护范围由所附的权利要求确定。

Claims (10)

  1. 一种带有反吹清灰功能的吹风机，包括壳体(1)、风机模块(2)、进风口(4)和出风口(5)，所述进风口(4)和出风口(5)设置在壳体(1)上，所述壳体(1)在进风口(4)和出风口(5)之间形成贯通的气流通道(6)，所述风机模块(2)设置在壳体(1)的气流通道(6)中，其特征在于，
    所述壳体(1)内设置有线路控制板(12)，所述线路控制板(12)与风机模块(2)相连，所述壳体(1)上设置有与线路控制板(12)相连以用于控制风机模块(2)正转或反转的触发部。
  2. 根据权利要求1所述的一种带有反吹清灰功能的吹风机，其特征在于，所述线路控制板(12)上设置有微控制器(121)和电源驱动模块(122)，所述电源驱动模块(122)与风机模块(2)相连，所述微控制器(121)与电源驱动模块(122)相连，所述触发部与微控制器(121)相连。
  3. 根据权利要求2所述的一种带有反吹清灰功能的吹风机，其特征在于，所述触发部包括设置在壳体上与微控制器(121)相连的反转按钮(13)和正转按钮(14)；
    所述微控制器(121)响应于正转按钮(14)输出的正转信号以通过电源驱动模块(122)控制风机模块(2)正向转动，所述微控制器(121)响应于反转按钮(13)输出的反转信号以通过电源驱动模块(122)控制风机模块(2)反向转动，其中所述微控制器(121)仅在正转按钮(14)未被触发时响应于反转按钮(13)输出的反转信号。
  4. 根据权利要求1所述的一种带有反吹清灰功能的吹风机，其特征在于，所述风机模块(2)包括无刷电机(21)以及设置在无刷电机(21)输出轴上的扇叶(22)，所述无刷电机(21)电连接于电源驱动模块(122)。
  5. 根据权利要求4所述的一种带有反吹清灰功能的吹风机，其特征在于，所述气流通道(6)中设置有安装套(8)，所述无刷电机(21)同轴设置在安装套(8)中，所述安装套(8)围绕无刷电机(21)周向间隔分布有若干风道(9)，所述风道(9)分别与扇叶(22)和进风口(4)相对。
  6. 根据权利要求1所述的一种带有反吹清灰功能的吹风机，其特征在于，所述进风口(4)上设置有进风档板(10)，所述进风档板(10)上设置有若干进风孔(11)，所述进风档板(10)的内侧设置有海绵滤网。
  7. 根据权利要求1所述的一种带有反吹清灰功能的吹风机，其特征在于，所述反转按钮(13)为按键按钮，所述微控制器(121)响应于反转按钮(13)输出的反转信号以输出调制控制信号至电源驱动模块(122)，并通过电源驱动模块(122)控制风机模块(2)以预设转速反向转动。
  8. 根据权利要求1所述的一种带有反吹清灰功能的吹风机，其特征在于，所述正转按钮(14)为无级调节开关，所述微控制器(121)响应于正转按钮(14)输出的正转信号以输出调制控制信号至电源驱动模块(122)，并通过电源驱动模块(122)控制风机模块(2)以调节的转速正向转动。
  9. 根据权利要求1所述的一种带有反吹清灰功能的吹风机，其特征在于，所述微控制器(121)上连接有电流检测电路和转速检测电路，所述电路检测电路连接于电源驱动模块(122)用于获取风机模块(2)的当前输入电流，所述转速检测电路连接于风机模块(2)用于获取风机模块(2)的当前转速；
    所述微控制器(121)用于控制该吹风机进入清灰检测模式，在清灰检测模式中，所述微控制器(121)基于正转按钮(14)被触发下风机模块(2)的当前转速和当前输入电流，并将当前转速下的当前输入电流与额定转速下的额定输入电流进行比较，以控制风机模块(2)进入待定清灰状态；
    在待定清灰状态中，所述微控制器(121)在正转按钮(14)未被触发的预设时间后控制风机模块(2)反向转动预设时间。
  10. 根据权利要求9所述的一种带有反吹清灰功能的吹风机，其特征在于，所述壳体(1)上还设置有与微控制器(121)相连的选择开关(15)，所述选择开关(15)被配置具有自动清灰模式和手动清灰模式；
    在手动清灰模式中，反转按钮(13)能被手动启动；
    在自动清灰模式中，所述微控制器(121)控制该吹风机进入所述清灰检测模式。
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