Hair care appliance and method of controlling the same

Abstract

The application relates to the technical field of nursing tools, and particularly discloses a hair care device and a control method thereof. The hair care device comprises a machine body, an air inlet and an air outlet arranged on the machine body, a motor arranged in the machine body and used for accelerating airflow, a temperature monitoring assembly used for monitoring the temperature of the motor, and an air speed gear adjusting assembly arranged on the machine body; and the control method of the hair care device comprises the following steps: determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly; and when the current temperature of the motor exceeds a first preset value, controlling the motor to reduce the speed by a first preset step. Therefore, the temperature of the motor can be monitored through the temperature monitoring assembly, and when it is determined that the temperature of the motor exceeds the first preset value, the motor can be controlled to reduce the speed by the first preset step, that is, the speed of the motor can be automatically adjusted through temperature monitoring, so that the problem that the motor is damaged and the life of the hair dryer is short due to the excessively high temperature of the motor can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nursing tools, in particular to a hair care device and a control method thereof. BACKGROUND

[0002] A hair dryer is a common household appliance, which mainly drives the rotor to rotate the fan blade by the motor to generate airflow, and sucks the airflow from the air inlet to the air outlet to realize blowing, which is mainly used for drying and shaping hair.

[0003] The mainstream hair dryer on the market usually does not consider the problem of dust accumulation in the air inlet after long-term use. When the air inlet is blocked, the airflow of the hair dryer will be significantly reduced, and it may even be only half of the original. At this time, if the motor is still working at the original set speed, the heat cannot be effectively taken away due to the reduction of fluid in the air duct, which easily causes the temperature of the motor to rise. When the temperature of the motor is too high, it will cause irreversible damage to the enameled wire, thereby affecting the service life of the hair dryer. SUMMARY

[0004] Therefore, it is necessary to provide a hair care device and a control method thereof in view of the above problems.

[0005] According to a first aspect of the embodiments of the present application, a control method of a hair care device is provided, the hair care device comprising a machine body, an air inlet and an air outlet arranged on the machine body, a motor arranged in the machine body for accelerating airflow, a temperature monitoring assembly for monitoring the temperature of the motor, and a wind speed gear adjusting assembly arranged on the machine body, the wind speed gear adjusting assembly comprising a gear icon.

[0006] The hair care device comprises a preset gear and a temporary gear, the preset gear being a gear set by the user through the wind speed gear adjusting assembly, the gear icon corresponding to the preset gear being displayed, and the temporary gear being a gear corresponding to the actual speed of the motor. The control method of the hair care device comprises:

[0007] determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly;

[0008] controlling the motor to reduce speed according to a first preset step when the current temperature of the motor exceeds a first preset value;

[0009] determining whether the speed of the motor after speed reduction drops a gear according to the speed of the motor after speed reduction and the current set temporary gear;

[0010] If the gear is dropped, the temporary gear is lowered, and a prompt information is output through the flashing gear icon;

[0011] When the user resets the preset gear based on the prompt information, it is determined whether the rotating speed corresponding to the new preset gear is greater than the rotating speed corresponding to the temporary gear after the gear is downshifted. If yes, the new preset gear is invalid, the gear icon remains unchanged and continues to flash. If not, the new preset gear is valid. When the new preset gear is valid, the gear icon is adjusted corresponding to the preset gear, the flashing of the gear icon is cancelled, and the motor is speed-adjusted by a third preset step, the third preset step being greater than a fourth preset step, and the fourth preset step being a speed-adjusting step when the preset gear is adjusted without receiving the prompt information.

[0012] In one of the embodiments, the wind speed gear adjusting assembly comprises a gear button.

[0013] When different wind speed gears correspond to different gear buttons and the same gear icon, if the new preset gear is valid, the gear icon is on; if not, the gear icon flashes.

[0014] When different wind speed gears correspond to the same gear button and different gear icons, the preset gear is determined according to the number of times of pressing the gear button. If the preset gear reset according to the number of times of pressing the gear button is valid, the corresponding gear icon is on; if not, the gear icon flashes.

[0015] In one of the embodiments, the motor comprises a plurality of stator windings, and the temperature monitoring assembly is inserted between two of the stator windings.

[0016] In one of the embodiments, the temperature monitoring assembly is fixed between the two stator windings by a glue with heat conductivity.

[0017] In one of the embodiments, the temperature monitoring assembly comprises a thermistor.

[0018] In one of the embodiments, the step of determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly comprises determining the current temperature of the motor according to the correspondence between the resistance value of the thermistor and the temperature of the motor and the current resistance value of the thermistor.

[0019] In one of the embodiments, the first preset step is K1*(T1-T2), wherein K1 is a preset coefficient, T1 is the current temperature of the motor, and T2 is the first preset value.

[0020] In one of the embodiments, the first preset value is between 130℃ and 140℃.

[0021] In one of the embodiments, the gears of the hair care device comprise a high gear, a middle gear and a low gear, the high gear corresponds to the first rotating speed of the motor, the middle gear corresponds to the second rotating speed of the motor, and the low gear corresponds to the third rotating speed of the motor.

[0022] The step of determining whether the motor speed after the speed reduction drops a gear according to the motor speed after the speed reduction and the current set temporary gear includes: if the current set temporary gear is a high gear, and the maximum motor speed after the speed reduction is lower than the first speed and higher than the second speed, it is determined that the motor speed after the speed reduction drops a gear.

[0023] The step of reducing the temporary gear and outputting prompt information through a flashing gear icon includes: reducing the temporary gear from a high gear to a middle gear, and outputting prompt information through a flashing gear icon.

[0024] And / or,

[0025] The step of determining whether the motor speed after the speed reduction drops a gear according to the current set temporary gear and the motor speed after the speed reduction includes: if the current set temporary gear is a middle gear, and the maximum motor speed after the speed reduction is lower than the second speed and higher than the third speed, it is determined that the motor speed after the speed reduction drops a gear.

[0026] The step of reducing the temporary gear and outputting prompt information through a flashing gear icon includes: reducing the temporary gear from a middle gear to a low gear, and outputting prompt information through a flashing gear icon.

[0027] And / or,

[0028] The step of determining whether the motor speed after the speed reduction drops a gear according to the current set temporary gear and the motor speed after the speed reduction includes: if the current set temporary gear is a low gear, and the maximum motor speed after the speed reduction is lower than the third speed, it is determined that the motor speed after the speed reduction drops a gear.

[0029] The step of reducing the temporary gear and outputting prompt information through a flashing gear icon includes: outputting prompt information that the maximum motor speed after the speed reduction is lower than the third speed corresponding to the low gear.

[0030] In one of the embodiments, the hair care device further includes a display screen arranged on the body, and the prompt information includes alarm prompt information and display information of the temporary gear after the gear reduction on the display screen.

[0031] In one of the embodiments, the hair care device further includes a human-computer interaction area, and the human-computer interaction area includes the wind speed gear adjusting assembly; the human-computer interaction area is arranged in another area of the hair care device independently of the display screen, or the human-computer interaction area and the display screen share the same area on the hair care device.

[0032] In one of the embodiments, the control method of the hair care device further includes:

[0033] determining whether the current temperature of the motor is lower than a second preset value, when the current temperature of the motor does not exceed the first preset value;

[0034] if yes, determining whether the motor has undergone speed reduction processing;

[0035] if yes, controlling the motor to increase speed according to a second preset step size.

[0036] In one embodiment, the second preset step size is K2*(T3-T1), where K2 is a preset coefficient, K2

[0037] In one embodiment, K1 / K2>1.5.

[0038] In one embodiment, after the step of controlling the motor to increase speed according to a second preset step size, the control method of the hair care device further comprises:

[0039] adjusting the temporary gear according to the speed of the motor after speed increase, the currently set temporary gear, and a preset gear.

[0040] In one embodiment, the step of adjusting the temporary gear according to the speed of the motor after speed increase, the currently set temporary gear, and a preset gear comprises:

[0041] if the currently set temporary gear is middle gear, the preset gear is high gear, and the maximum speed of the motor after speed increase is greater than the second speed, then the temporary gear is restored to high gear;

[0042] if the currently set temporary gear is low gear, the preset gear is middle gear, and the maximum speed of the motor after speed increase is greater than the third speed, then the temporary gear is restored to middle gear.

[0043] According to a second aspect of the embodiments of the present application, a control method of a hair care device is provided, the hair care device comprising a body, an air inlet and an air outlet arranged on the body, a motor arranged in the body for accelerating airflow, and a temperature monitoring assembly for monitoring the temperature of the motor; the control method of the hair care device comprising:

[0044] setting a plurality of temperature intervals;

[0045] determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly;

[0046] determining the temperature interval into which the current temperature of the motor falls in combination with the plurality of temperature intervals;

[0047] According to the temperature interval in which the current temperature of the motor falls, the motor is controlled to reduce speed by a corresponding speed reduction amount, and different temperature intervals correspond to different speed reduction amounts.

[0048] In one of the embodiments, for different temperature intervals, the higher the temperature value of each temperature interval, the greater the corresponding speed reduction amount.

[0049] In one of the embodiments, the plurality of temperature intervals at least includes 135℃-140℃, 140℃-145℃, and above 145℃; the step of controlling the motor to reduce speed by a corresponding speed reduction amount according to the temperature interval in which the current temperature of the motor falls includes:

[0050] When it is determined that the current temperature of the motor is located at 135℃-140℃, the motor is controlled to reduce speed by 40 revolutions;

[0051] When it is determined that the current temperature of the motor is located at 140℃-145℃, the motor is controlled to reduce speed by 200 revolutions;

[0052] When it is determined that the current temperature of the motor is located at above 145℃, the motor is controlled to reduce speed by 400 revolutions.

[0053] In one of the embodiments, the hair care device includes a wind speed gear adjusting assembly arranged on the body, and the hair care device includes a preset gear and a temporary gear, the preset gear is a gear set by the user through the wind speed gear adjusting assembly, and the temporary gear is a gear corresponding to the actual speed of the motor;

[0054] After the step of controlling the motor to reduce speed by a corresponding speed reduction amount, the control method of the hair care device further includes:

[0055] Determining whether the speed of the motor after speed reduction is less than the speed corresponding to the currently set temporary gear;

[0056] If it is less, determining whether the speed of the motor after speed reduction is less than a third preset value;

[0057] If it is less, confirming that the motor has a fault.

[0058] According to a third aspect of the embodiments of the present application, a control method of a hair care device is provided, the hair care device includes a body, an air inlet and an air outlet arranged on the body, a motor arranged in the body for accelerating airflow, a temperature monitoring assembly for monitoring the temperature of the motor, a heating assembly for heating airflow, and a wind speed gear adjusting assembly arranged on the body;

[0059] The hair care device comprises preset gears and temporary gears, the preset gears are gears set by the user through the wind speed gear adjusting assembly, and the temporary gears are gears corresponding to the actual rotating speed of the motor; the control method of the hair care device comprises:

[0060] According to the monitoring value of the temperature monitoring assembly, the current temperature of the motor is determined;

[0061] When the current temperature of the motor exceeds a first preset value, the motor is controlled to reduce the rotating speed by a first preset step, and the heating power of the heating assembly is reduced;

[0062] According to the rotating speed of the motor after the rotating speed is reduced and the currently set temporary gear, it is determined whether the rotating speed of the motor after the rotating speed is reduced drops a gear;

[0063] If the rotating speed drops a gear, the temporary gear is downshifted, prompt information is output, the heating power of the heating assembly is restored, and the heating power of the heating assembly is increased.

[0064] In one embodiment, after the temporary gear is downshifted, the heating power of the heating assembly is restored to the heating power set before the heating power of the heating assembly is reduced.

[0065] According to a fourth aspect of the embodiments of the present application, a hair care device is provided, comprising a machine body, an air inlet and an air outlet arranged on the machine body, a motor arranged in the machine body for accelerating airflow, and a temperature monitoring assembly for monitoring the temperature of the motor;

[0066] The hair care device further comprises a main control module, the main control module is electrically connected to the motor and the temperature monitoring assembly respectively, and is configured to execute the control method of the hair care device described above.

[0067] The hair care device and the control method thereof provided by the embodiments of the present application can monitor the temperature of the motor through the temperature monitoring assembly, and when it is determined that the temperature of the motor exceeds the first preset value, the motor can be controlled to reduce the speed by the first preset step, so that the speed of the motor can be automatically adjusted in a temperature monitoring manner, and the problem of damage to the motor and short service life of the hair dryer caused by excessively high temperature of the motor can be avoided. Meanwhile, whether the speed of the motor after speed reduction drops a gear can be determined according to the speed of the motor after speed reduction and the current set temporary gear, and if the speed drops a gear, the temporary gear is downshifted, and a prompt information is output through the flashing gear icon. When the preset gear set by the user based on the prompt information is received, whether the speed corresponding to the new preset gear is greater than the speed corresponding to the temporary gear after downshifting is judged, and if yes, the new preset gear is determined to be invalid, the gear icon remains unchanged and continues to flash, and otherwise, the new preset gear is valid. When the new preset gear is valid, the gear icon is adjusted corresponding to the preset gear again, the flashing of the gear icon is cancelled, and the motor is speed-adjusted by the third preset step, so that the intelligent control of the gear and the gear icon of the hair care device can be further realized, and the user experience can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0068] Figure 1 A structural schematic diagram of a hair care device provided by an embodiment of the present application is shown in the figure.

[0069] Figure 2 A transverse sectional view of the hair care device shown in the figure is shown in the figure. Figure 1

[0070] Figure 3 A structural schematic diagram of a motor in the hair care device provided by an embodiment of the present application is shown in the figure.

[0071] Figure 4 A longitudinal sectional view of the motor shown in the figure is shown in the figure. Figure 3

[0072] A structural schematic diagram of the bottom of the motor shown in the figure is shown in the figure. Figure 5 Figure 3 A partial structural schematic diagram of the motor shown in the figure is shown in the figure.

[0073] Figure 6 Figure 3 A flowchart of a control method of the hair care device provided by an embodiment of the present application is shown in the figure.

[0074] Figure 7 A flowchart of a control method of the hair care device provided by another embodiment of the present application is shown in the figure.

[0075] Figure 8 A flowchart of a control method of the hair care device provided by another embodiment of the present application is shown in the figure.

[0076] Figure 9 A flowchart of a control method of the hair care device provided by another embodiment of the present application is shown in the figure. ​​​

[0077] Figure 10 A flow chart of a control method of a hair care device according to another embodiment of the present application is provided.

[0078] Figure 11 A flow chart of a control method of a hair care device according to another embodiment of the present application is provided.

[0079] Figure 12 A flow chart of a control method of a hair care device according to another embodiment of the present application is provided.

[0080] Figure 13 A flow chart of a control method of a hair care device according to another embodiment of the present application is provided.

[0081] Figure 14 A flow chart of a control method of a hair care device according to another embodiment of the present application is provided.

[0082] Explanation of reference signs:

[0083] 100, body; 200, air inlet; 300, air outlet; 400, air supply channel; 500, heating assembly; 600, motor; 610, casing; 620, stator assembly; 621, stator winding; 630, rotor assembly; 640, wiring board; 650, heat dissipation air duct; 660, impeller; 700, temperature monitoring assembly. DETAILED DESCRIPTION

[0084] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0085] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0086] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or an ordering between the indicated technical features. Thus, a feature defined with "first", "second", etc. can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically defined.

[0087] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0088] As described in the background, the current hair dryer usually has the problem of dust accumulation in the air inlet after long time use. The dust accumulation in the air inlet will cause the air inlet to be blocked, and then the air flow of the hair dryer will be significantly reduced, and even it can be only half of the original. If the motor still operates at the original speed at this time, the heat cannot be effectively taken away due to the reduction of the fluid in the air duct, which will easily cause the temperature of the motor to rise. When the temperature of the motor is too high, it will cause irreversible damage to the enameled wire, and then affect the service life of the motor and the hair dryer.

[0089] In the prior art, only motor stall protection is usually provided, that is, foreign matter enters the inside of the motor to wind the impeller or rotor, so that the motor speed is reduced. At this time, the power supply to the motor and the heating wire can be cancelled or the whole machine can be directly powered off for protection, but this will seriously affect the user's experience, and also cannot solve the problem of dust accumulation in the air inlet.

[0090] Therefore, the embodiments of the present application provide a hair care device and a control method thereof.

[0091] In one embodiment, a control method of a hair care device is provided. Through the control method of the hair care device, the damage to the motor caused by the high temperature of the motor can be avoided without affecting the user's experience, and the service life of the hair dryer is prolonged.

[0092] Reference Figures 1-6 In the embodiment, the hair care device includes a body 100, an air inlet 200 and an air outlet 300 arranged on the body 100, a motor 600 arranged in the body 100 for accelerating airflow, a temperature monitoring assembly 700 for monitoring the temperature of the motor 600, and a wind speed gear adjusting assembly arranged on the body 100.

[0093] Specifically, reference Figure 1 and Figure 2The body 100 comprises an air supply channel 400 which is communicated with the air inlet 200 and the air outlet 300. When the control motor 600 is operated, the airflow in the external environment can enter the air supply channel 400 from the air inlet 200 under the air suction power, and then be sent out through the air outlet 300 for drying hair. In this process, the airflow in the external environment can be converted into high-speed airflow through the air supply channel 400 under the driving of the motor 600.

[0094] Further, referring to Figure 2 The hair care device can further be provided with a heating assembly 500. When the heating assembly 500 is turned on, the heating assembly 500 can heat the airflow in the air supply channel 400, so that the airflow output from the air outlet 300 has a certain temperature, achieving the effect of fast drying. The heating assembly 500 can comprise a heating wire. The air outlet 300 is provided with a temperature detection member for detecting the ambient temperature at the air outlet 300, so as to dynamically maintain the ambient temperature at the air outlet 300 within a certain temperature range.

[0095] Referring to Figures 3-6 In this embodiment, the motor 600 comprises a motor housing 610, a stator assembly 620 which is detachably installed on the motor housing 610, and a rotor assembly 630 which is arranged in the motor housing 610 and the stator assembly 620. The stator assembly 620 comprises a stator core, a plurality of skeletons which are detachably installed in the stator core, and a plurality of stator windings 621 which are arranged on the skeletons. The temperature monitoring assembly 700 can be inserted between two stator windings 621 for monitoring the temperature.

[0096] Preferably, referring to Figure 5 The temperature monitoring assembly 700 can be fixed between the two stator windings 621 by means of glue with heat conductivity, so that the fixing of the temperature monitoring assembly 700 can be achieved without adding other structures. Specifically, the distance between the two adjacent stator windings 621 is about 2mm, and the diameter of the temperature monitoring assembly 700 is about 1.5mm. The temperature monitoring assembly 700 can comprise an NTC temperature sensor, which is a kind of thermistor whose resistance value decreases rapidly with the increase of temperature, so that the temperature monitored by the NTC temperature sensor can be determined according to the current resistance value of the NTC temperature sensor.

[0097] Referring to Figures 3-6In the embodiment, the motor 600 further comprises a wiring board 640, a projection of the wiring board 640 in the axial direction of the motor 600 covers the stator assembly 620, the temperature monitoring assembly 700 is led out from one side of the wiring board 640 to between two adjacent stator windings 621, and the other side of the wiring board 640 is provided with a wiring terminal which can be connected to a control circuit board of the hair care device through a wire, that is, the signal of the temperature monitoring assembly 700 can be transmitted to the control circuit board through the wiring board 640, so that the control circuit board analyzes and processes the monitoring signal of the temperature monitoring assembly 700, and at the same time, the running signal of the motor 600 itself is also connected to the control circuit board through the wiring board 640, so that the control circuit board monitors the motor 600. By integrating the temperature monitoring assembly 700 into the wiring board 640, the footprint of the temperature monitoring assembly 700 can be reduced, and the temperature monitoring assembly 700 and the corresponding wire can be prevented from affecting the air outlet effect of the motor 600.

[0098] In addition, the stator assembly 620 and the metal shell 610 are connected in heat conduction, the shell 610 is provided with a heat dissipation air duct 650, and when the impeller 660 in the shell 610 rotates, the airflow entering from the air inlet 200 can be accelerated and discharged through the air supply passage 400, so that the arrangement of the temperature monitoring assembly 700 does not affect the heat dissipation of the stator assembly 620.

[0099] In the embodiment, the machine body 100 is further provided with a wind speed gear adjusting assembly, and a user can adjust the rotation speed of the motor 600, that is, the wind speed, through the wind speed gear adjusting assembly. The wind speed gear adjusting assembly can adopt a key switch form. The wind speed gears can include a high gear, a middle gear and a low gear, the high gear corresponds to a first rotation speed of the motor 600, the middle gear corresponds to a second rotation speed of the motor 600, and the low gear corresponds to a third rotation speed of the motor 600, the first rotation speed is greater than the second rotation speed, and the second rotation speed is greater than the third rotation speed. In a specific example, the first rotation speed is 100000 RPM, the second rotation speed is 88000 RPM, and the third rotation speed is 82000 RPM.

[0100] In the embodiment, the hair care device can further comprise a display screen arranged on the machine body 100, and the display screen can be used to display data such as wind speed, wind temperature and gear. The hair care device can further comprise a man-machine interaction area, and the man-machine interaction area comprises the wind speed gear adjusting assembly. The man-machine interaction area can be arranged in other areas of the hair care device independently of the display screen, that is, the man-machine interaction area and the display screen are arranged separately, thereby preventing user misoperation. The man-machine interaction area and the display screen can also share the same area on the hair care device, thereby saving the total space occupied by the man-machine interaction area and the display screen.

[0101] In addition, in the human-computer interaction area, in addition to the wind speed level adjusting assembly, a wind temperature adjusting assembly and a mode adjusting assembly can be further included, and the user can adjust the heating parameter of the heating assembly 500 and the preset working mode in the hair care device through the wind temperature adjusting assembly and the mode adjusting assembly. The wind temperature adjusting assembly and the mode adjusting assembly can both be in the form of a key switch.

[0102] With reference to Figure 7 The control method of the hair care device provided in the embodiment can include the following steps:

[0103] Step S200: determining the current temperature of the motor 600 according to the monitoring value of the temperature monitoring assembly 700.

[0104] When the hair care device is working, the monitoring value of the temperature monitoring assembly 700 can be acquired in real time, and the temperature value can be determined according to the monitoring value, which is the current temperature of the motor 600.

[0105] In one of the embodiments, the temperature monitoring assembly 700 is a thermistor, and its working principle is that the resistance value will rapidly decrease with the increase of temperature, that is, the resistance value is related to the temperature. Based on this, step S200 can include: determining the current temperature of the motor 600 according to the corresponding relationship between the resistance value of the thermistor and the temperature of the motor 600 and the current resistance value of the thermistor. That is, the corresponding relationship between the resistance value of the thermistor and the temperature of the motor 600 can be acquired in advance, and when the current resistance value of the thermistor is acquired, the current temperature of the motor 600 can be determined from the corresponding relationship acquired in advance.

[0106] Step S400: when the current temperature of the motor 600 exceeds a first preset value, controlling the motor 600 to slow down at a first preset step.

[0107] After the current temperature of the motor 600 is determined, the current temperature of the motor 600 can be analyzed and processed, and then the operation of the motor 600 can be controlled. Specifically, a temperature value, defined as a first preset value here, can be preset, and when it is judged that the current temperature of the motor 600 exceeds the first preset value, the motor 600 can be controlled to slow down at a first preset step.

[0108] In the embodiment, the temperature monitoring assembly 700 for monitoring the temperature of the motor 600 is arranged in the hair care device, and the main control module (i.e., the control circuit board) can obtain the monitoring value of the temperature monitoring assembly 700 and determine the temperature of the motor 600 according to the monitoring value. When it is determined that the current temperature of the motor 600 exceeds the first preset value, it indicates that the heat generated by the operation of the motor 600 cannot be effectively released, and the current temperature of the motor 600 is too high. At this time, the main control module can control the motor 600 to slow down according to the first preset step, so as to avoid the situation that the motor 600 continues to operate at the original speed and causes overheating and damage to the motor 600. Compared with the method of directly performing power-off protection on the whole machine or canceling the power supply of the motor 600 and the heating wire in the prior art, the above-mentioned method of the embodiment is more intelligent, which can avoid the damage to the motor 600 caused by the high temperature of the motor 600 without affecting the user experience, thereby prolonging the service life of the hair dryer.

[0109] In one of the embodiments, the first preset step is K1*(T1-T2), wherein K1 is a preset coefficient, T1 is the current temperature of the motor 600, and T2 is the first preset value.

[0110] In a specific example, K1 is 8, and T2 is 135°C. Assuming that the current temperature T1 of the motor 600 monitored is 140°C, the first preset step is 40, i.e., the motor 600 slows down by 40 revolutions. Assuming that the current temperature T1 of the motor 600 monitored is 145°C, the first preset step is 80, i.e., the motor 600 slows down by 80 revolutions. That is, the higher the temperature of the motor 600, the more the motor 600 slows down. The value of K1 can be set according to actual needs, for example, K1 can be 5 or 6 or 7 or 8 or 9, etc., which will not be listed one by one here.

[0111] In one of the embodiments, the first preset value can be between 130°C and 140°C. Specifically, the first preset value can be 130°C, 132°C, 135°C, 138°C, 140°C, etc. Preferably, the first preset value is 135°C, i.e., when the temperature of the motor 600 is below 135°C, it indicates that the motor 600 is operating normally, and when the temperature of the motor 600 exceeds 135°C, it indicates that the heat generated by the operation of the motor 600 has not been released in time, and the motor 600 needs to be slowed down according to the first preset step.

[0112] In one of the embodiments, the hair care device provided by the embodiment includes a preset gear and a temporary gear. The preset gear is a gear set by the user through the wind speed gear adjustment assembly, i.e., a gear desired by the user. The temporary gear is a gear corresponding to the actual rotating speed of the motor 600, i.e., when the motor 600 is actually running, due to various factors, the rotating speed of the motor 600 may not reach the preset gear set by the user. In the embodiment, the gear corresponding to the actual rotating speed of the motor 600 is defined as the temporary gear, which is also the gear actually reached by the motor 600. When the motor 600 is normally working (without problems such as temperature being too high), the temporary gear is usually the same as the preset gear. When the motor 600 is abnormally working (for example, the temperature is too high and needs to be reduced), the rotating speed of the motor 600 will be adjusted, so the temporary gear is not the same as the preset gear. When the motor 600 returns to normal, the main control module can control the temporary gear to be the same as the preset gear. In addition, the wind speed gear adjustment assembly also includes a gear icon, and the gear icon displays the preset gear.

[0113] In the embodiment, the preset gear and the temporary gear can be stored in the corresponding storage module of the hair care device, and the main control module can obtain the preset gear and the temporary gear stored in the storage module and perform subsequent analysis.

[0114] Referring to Figure 8 After step S400, i.e., the step of controlling the motor 600 to reduce the rotating speed by the first preset step size, the control method of the hair care device provided by the embodiment further includes:

[0115] In step S500, the rotating speed of the motor 600 after the reduction and the current temporary gear are determined to determine whether the rotating speed of the motor 600 after the reduction drops a gear.

[0116] In step S600, if the gear drops, the temporary gear is reduced, and prompt information is output by flashing the gear icon.

[0117] When the motor 600 is normally working, the temporary gear is usually the same as the preset gear. After the motor 600 is reduced by the foregoing method due to the temperature being too high, the rotating speed of the motor 600 after the reduction may not correspond to the preset gear or the temporary gear set by the user. Therefore, the rotating speed of the motor 600 after the reduction can be obtained to determine the gear corresponding to the rotating speed of the motor 600 after the reduction, and the gear is compared with the current temporary gear to determine whether the motor 600 drops a gear after the reduction. If it is determined that the gear drops, the temporary gear is reduced, and prompt information is output, which can be in the form of flashing the gear icon to prompt the user.

[0118] In addition, based on the prompt information, the user can reset the preset gear. When the preset gear reset by the user based on the prompt information is received, it is determined whether the speed corresponding to the new preset gear is greater than the speed corresponding to the temporary gear after the gear is downshifted. If yes, the new preset gear is determined to be invalid, the gear icon remains unchanged and continues to flash, otherwise it is valid. When the new preset gear is valid, the gear icon is adjusted corresponding to the preset gear, the flashing of the gear icon is cancelled, and the motor is speed-adjusted by a third preset step, which is greater than a fourth preset step, and the fourth preset step is the speed-adjusting step when the preset gear is adjusted without receiving the prompt information. Thus, the intelligent control of the gear and the gear icon of the hair care device can be further realized, and the user experience can be improved.

[0119] The wind speed gear assembly further comprises a gear button. When different wind speed gears correspond to different gear buttons and correspond to the same gear icon, if the new preset gear is valid, the gear icon is on, otherwise the gear icon flashes. When different wind speed gears correspond to the same gear button and correspond to different gear icons, the preset gear can be determined according to the number of presses on the gear button; if the preset gear reset according to the number of presses on the gear button is valid, the corresponding gear icon is on, otherwise the gear icon flashes.

[0120] As described above, the gears of the hair care device can include high, medium and low gears, the high gear corresponds to the first speed of the motor 600, the medium gear corresponds to the second speed of the motor 600, and the low gear corresponds to the third speed of the motor 600. In one specific example, the first speed is 100,000 RPM, the second speed is 88,000 RPM, and the third speed is 82,000 RPM.

[0121] In one embodiment, step S500, i.e., the step of determining whether the speed of the motor 600 after speed reduction is out of gear according to the speed of the motor 600 after speed reduction and the currently set temporary gear, can include: if the currently set temporary gear is high, and the maximum speed of the motor 600 after speed reduction is lower than the first speed and higher than the second speed, it is determined that the speed of the motor 600 after speed reduction is out of gear.

[0122] Correspondingly, the step S600 of downshifting the temporary gear and outputting prompt information by flashing the gear icon includes: reducing the temporary gear from high to medium, and outputting prompt information.

[0123] That is, if the current set temporary gear is high gear, but the maximum speed of the motor 600 after speed reduction is lower than the first speed corresponding to the high gear and higher than the second speed corresponding to the middle gear, that is, the speed of the motor 600 actually cannot reach the speed corresponding to the high gear, therefore the temporary gear can be lowered from the high gear to the middle gear, and the prompt information can be output by flashing the gear icon, for example, the prompt information that the temporary gear is the middle gear can be output on the display screen.

[0124] In one of the embodiments, the step S500, that is, the step of determining whether the speed of the motor 600 after speed reduction drops according to the current set temporary gear and the speed of the motor 600 after speed reduction includes: if the current set temporary gear is the middle gear, and the maximum speed of the motor 600 after speed reduction is lower than the second speed and higher than the third speed, it is determined that the speed of the motor 600 after speed reduction drops.

[0125] Correspondingly, the step S600, that is, the step of lowering the temporary gear and outputting the prompt information by flashing the gear icon includes: lowering the temporary gear from the middle gear to the low gear, and outputting the prompt information by flashing the gear icon.

[0126] That is, if the current set temporary gear is the middle gear, but the maximum speed of the motor 600 after speed reduction is lower than the second speed corresponding to the middle gear and higher than the third speed corresponding to the low gear, that is, the speed of the motor 600 actually cannot reach the speed corresponding to the middle gear, therefore the temporary gear can be lowered from the middle gear to the low gear, and the prompt information can be output by flashing the gear icon, for example, the prompt information that the temporary gear is the low gear can be output on the display screen.

[0127] In one of the embodiments, the step S500, that is, the step of determining whether the speed of the motor 600 after speed reduction drops according to the current set temporary gear and the speed of the motor 600 after speed reduction includes: if the current set temporary gear is the low gear, and the maximum speed of the motor 600 after speed reduction is lower than the third speed, it is determined that the speed of the motor 600 after speed reduction drops.

[0128] Correspondingly, the step S600, that is, the step of lowering the temporary gear and outputting the prompt information by flashing the gear icon includes: outputting the prompt information that the maximum speed of the motor 600 after speed reduction is lower than the third speed corresponding to the low gear.

[0129] That is, if the current set temporary gear is the low gear, but the maximum speed of the motor 600 after speed reduction is lower than the third speed corresponding to the low gear, that is, the speed of the motor 600 actually cannot reach the speed corresponding to the low gear, therefore the prompt information that the maximum speed of the motor 600 after speed reduction is lower than the third speed corresponding to the low gear can be output, for example, the flashing prompt information that the temporary gear is the low gear can be output on the display screen to remind the user to check.

[0130] Through the above manner, the gear actually reached in the working process of the motor 600 (i.e., the temporary gear) can be monitored and displayed, so that the user knows, and the user experience is effectively improved.

[0131] In one of the embodiments, the prompt information can include alarm prompt information and display information of the temporary gear after the gear reduction on the display screen.

[0132] In the embodiment, in addition to being able to reduce the speed of the motor 600 when the temperature of the motor 600 is too high, the speed of the motor 600 can also be restored when the temperature of the motor 600 returns to normal.

[0133] Specifically, with reference to Figure 9 The control method of the hair care device provided in the embodiment can further include the following steps:

[0134] Step S700, when the current temperature of the motor 600 does not exceed the first preset value, determining whether the current temperature of the motor 600 is lower than a second preset value;

[0135] Step S800, if yes, determining whether the motor 600 has been subjected to speed reduction processing;

[0136] Step S900, if yes, controlling the motor 600 to increase the speed by a second preset step.

[0137] When it is determined that the current temperature of the motor 600 does not exceed the first preset value, it can be further determined whether the current temperature of the motor 600 is lower than the second preset value. In the embodiment, the first preset value is usually higher than the second preset value, that is, when it is determined that the current temperature of the motor 600 does not exceed the first preset value, it means that the current temperature of the motor 600 is not too high, and at this time, it can be further determined whether the temperature of the motor 600 is lower than the second preset value. When it is lower than the second preset value, it can be considered that the motor 600 is running normally. When it is determined that the motor 600 is running normally, it can be further considered whether the motor 600 has been subjected to the foregoing speed reduction processing. If the motor 600 has been subjected to the speed reduction processing, the motor 600 can be controlled to increase the speed by the second preset step, so as to gradually increase the speed of the motor 600 to the preset gear set by the user. In this way, the speed of the motor 600 can be increased after the temperature returns to normal, so as to meet the original gear set by the user. Moreover, the motor 600 is controlled to increase the speed by the second preset step, which is more intelligent than directly increasing the speed of the motor 600 to a specific value, and improves the user experience.

[0138] In one of the embodiments, the second preset step is K2*(T3-T1), wherein K2 is a preset coefficient, K2

[0139] In one specific example, K2 is 4 and T3 is 130℃. Assuming that the monitored current temperature T1 of the motor 600 is 125℃, the second preset step is 20, i.e. the motor 600 is accelerated by 20 rotations; assuming that the monitored current temperature T1 of the motor 600 is 120℃, the second preset step is 40, i.e. the motor 600 is accelerated by 40 rotations. That is, the lower the temperature of the motor 600, the more the motor 600 is accelerated. In this embodiment, K2 is set to be less than K1, i.e. the motor 600 is accelerated slowly and decelerated quickly, which is to prevent the temperature from rising too fast due to the motor 600 being accelerated too fast. The value of K2 can be set according to actual needs, for example, K2 can be 2 or 3 or 4 or 5, etc., which are not listed one by one here.

[0140] In one of the embodiments, K1 / K2>1.5. For example, K1 is 8 and K2 is 4; or K1 is 9 and K2 is 5. The value combinations of K1 and K2 are not listed one by one here.

[0141] Referring to Figure 10 In one of the embodiments, after the step S900, i.e. the step of controlling the motor 600 to accelerate at the second preset step, the control method of the hair care device provided in this embodiment can further include:

[0142] Step S1000, adjusting the temporary gear according to the rotation speed of the motor 600 after acceleration, the currently set temporary gear and the preset gear.

[0143] That is, the temporary gear of the motor 600 can change after the motor 600 is accelerated, so after the motor 600 is accelerated, the current temporary gear can be adjusted according to the rotation speed of the motor 600 after acceleration, in combination with the preset gear and the temporary gear, so as to make the temporary gear consistent with the actual rotation speed of the motor 600.

[0144] Specifically, referring to Figure 11 , the step S1000, i.e. the step of adjusting the temporary gear according to the rotation speed of the motor 600 after acceleration, the currently set temporary gear and the preset gear, can further include the following steps:

[0145] Step S1100, if the currently set temporary gear is the middle gear, the preset gear is the high gear, and the maximum rotation speed of the motor 600 after acceleration is greater than the second rotation speed, the temporary gear is restored to the high gear.

[0146] Step S1200, if the currently set temporary gear is the low gear, the preset gear is the middle gear, and the maximum rotation speed of the motor 600 after acceleration is greater than the third rotation speed, the temporary gear is restored to the middle gear.

[0147] That is, if the current temporary gear is medium, the preset gear is high, and the maximum speed of the motor 600 after speed increase is greater than the second speed corresponding to the medium gear, the temporary gear can be restored to high, and the previous alarm prompt information can be canceled. If the current temporary gear is low, the preset gear is medium, and the maximum speed of the motor 600 after speed increase is greater than the third speed corresponding to the low gear, the temporary gear can be restored to medium, and the previous alarm prompt information can be canceled.

[0148] In another embodiment, a control method of a hair care device is also provided. The hair care device includes a body 100, an air inlet 200 and an air outlet 300 arranged on the body 100, a motor 600 arranged in the body 100 for accelerating airflow, and a temperature monitoring assembly 700 for monitoring the temperature of the motor 600. The specific structure of the hair care device can refer to the specific description in the foregoing, and will not be described here.

[0149] With reference to Figure 12 The control method of the hair care device provided in the embodiment can include the following steps:

[0150] Step S200', setting a plurality of temperature intervals.

[0151] Specifically, a plurality of temperature intervals can be set in advance for subsequent comparison and analysis of the temperature. For example, the plurality of temperature intervals can include three temperature intervals of 135°C-140°C, 140°C-145°C, and 145°C or above, and the specific temperature interval can be set according to actual needs.

[0152] Step S400', determining the current temperature of the motor 600 according to the monitoring value of the temperature monitoring assembly 700.

[0153] That is, the monitoring value of the temperature monitoring assembly 700 is obtained, and the current temperature of the motor 600 is determined according to the monitoring value. The temperature monitoring assembly 700 can refer to the specific description in the foregoing, and will not be described here.

[0154] Step S600', determining the temperature interval into which the current temperature of the motor 600 falls in combination with the plurality of temperature intervals.

[0155] When the current temperature of the motor 600 and the plurality of temperature intervals are determined, it can be determined into which temperature interval the current temperature of the motor 600 falls, and subsequent speed reduction processing is performed.

[0156] Step S800', controlling the motor 600 to reduce speed according to the corresponding speed reduction amount according to the temperature interval into which the current temperature of the motor 600 falls, and different temperature intervals correspond to different speed reduction amounts.

[0157] In this embodiment, different temperature intervals correspond to different speed reduction amounts, that is, when the current temperature of the motor 600 falls into different temperature intervals, the motor 600 needs different speed reduction amounts. Therefore, when the temperature interval to which the current temperature of the motor 600 falls is determined, the motor 600 can be speeded down according to the speed reduction amount corresponding to the temperature interval.

[0158] In one of the embodiments, for different temperature intervals, the higher the temperature value of each temperature interval, the greater the corresponding speed reduction amount. That is, in actual application, the higher the temperature of the motor 600, the greater the speed reduction amount it needs, so the speed reduction amount corresponding to the temperature interval with a higher temperature value is set to be greater than the speed reduction amount corresponding to the temperature interval with a lower temperature value, thereby further improving the intelligent degree of the control method.

[0159] For example, the speed reduction amount corresponding to the temperature interval 135℃-140℃ is less than the speed reduction amount corresponding to the temperature interval 140℃-145℃.

[0160] In one of the embodiments, step S800', that is, the step of controlling the motor 600 to speed down according to the corresponding speed reduction amount according to the temperature interval to which the current temperature of the motor 600 falls, comprises:

[0161] When it is determined that the current temperature of the motor 600 is located in 135℃-140℃, the motor 600 is controlled to speed down by 40 revolutions;

[0162] When it is determined that the current temperature of the motor 600 is located in 140℃-145℃, the motor 600 is controlled to speed down by 200 revolutions;

[0163] When it is determined that the current temperature of the motor 600 is located above 145℃, the motor 600 is controlled to speed down by 400 revolutions.

[0164] As can be seen, the higher the temperature of the motor 600, the greater the speed reduction amount of the motor 600, which helps to determine a reasonable speed reduction amount according to the current temperature of the motor 600 and improves the intelligent degree.

[0165] Reference Figure 13 In one of the embodiments, after step S800', that is, the step of controlling the motor 600 to speed down according to the corresponding speed reduction amount, the control method of the hair care device provided in this embodiment can further comprise the following steps:

[0166] Step S910', determining whether the speed of the motor 600 after speed reduction is less than the speed corresponding to the current temporary gear;

[0167] Step S920', if less, determining whether the speed of the motor 600 after speed reduction is less than a third preset value.

[0168] Step S930', if less, confirming that the motor 600 is malfunctioning.

[0169] After the motor 600 is reduced in speed, the speed of the motor 600 after being reduced in speed can be analyzed to avoid malfunction of the motor 600 after being reduced in speed. Specifically, it can be first determined whether the speed of the motor 600 after being reduced in speed is less than the speed corresponding to the current set temporary gear, for example, the current set temporary gear is the middle gear, and it is determined whether the speed of the motor 600 after being reduced in speed is less than the second speed. If it is determined that the speed of the motor 600 after being reduced in speed is less than the speed corresponding to the current set temporary gear, it is further determined whether the speed of the motor 600 after being reduced in speed is less than a third preset value, which can be set in advance, for example, the third preset value can be 20000 revolutions. If it is determined that the speed of the motor 600 after being reduced in speed is less than the third preset value, it can be determined that the motor 600 is currently in an over-low-speed running state, at which time it can be confirmed that the motor 600 is malfunctioning, for example, the impeller 660 of the motor 600 can be stuck by foreign matter or other reasons causing the motor 600 to run at an over-low speed.

[0170] In another embodiment, a control method of a hair care device is also provided. The hair care device includes a body 100, an air inlet 200 and an air outlet 300 arranged on the body 100, a motor 600 arranged in the body 100 for accelerating airflow, a temperature monitoring assembly 700 for monitoring the temperature of the motor 600, a heating assembly 500 for heating airflow, and a wind speed gear adjusting assembly arranged on the body 100.

[0171] In this embodiment, the hair care device includes a preset gear and a temporary gear, the preset gear being a gear set by the user through the wind speed gear adjusting assembly, and the temporary gear being a gear corresponding to the actual speed of the motor.

[0172] Referring to Figure 14 The control method of the hair care device provided in this embodiment includes the following steps:

[0173] Step S2000, determining the current temperature of the motor 600 according to the monitoring value of the temperature monitoring assembly 700.

[0174] Step S3000, when the current temperature of the motor 600 exceeds a first preset value, controlling the motor 600 to reduce in speed according to a first preset step length, and simultaneously reducing the heating power of the heating assembly 500.

[0175] Step S4000, determining whether the speed of the motor 600 after being reduced in speed drops a gear according to the speed of the motor 600 after being reduced in speed and the current set temporary gear.

[0176] If the gear is dropped, the temporary gear is downshifted, a prompt information is outputted, and the heating component 500 is recovered and the heating power of the heating component 500 is increased.

[0177] When the motor is controlled to reduce the speed according to the first preset step, the heating power of the heating component is reduced synchronously, so that the problem that the user feels hot due to the sudden accumulation of heat caused by the reduction of the wind speed can be solved. When the temporary gear is downshifted, the heating power of the component can be recovered and the heating power of the heating component can be increased synchronously, so that the wind speed reduction can be compensated by increasing the heating power, and enough energy and heat can be ensured to blow dry the hair.

[0178] In one of the embodiments, after the step S5000, i.e., after the downshifting of the temporary gear is completed, the heating power of the heating component is recovered to the heating power set before the heating power of the heating component is reduced.

[0179] The following table is a specific example of the display status of the gear icon and the power change of the heating component under different conditions:

[0180]

[0181] Reference Figures 1-6 In one of the embodiments, a hair care device is provided, which includes a machine body 100, an air inlet 200 and an air outlet 300 arranged on the machine body 100, a motor 600 arranged in the machine body 100 for accelerating airflow, and a temperature monitoring component 700 for monitoring the temperature of the motor 600.

[0182] The hair care device further includes a master control module electrically connected to the motor 600 and the temperature monitoring component 700, and configured to execute the control method of the hair care device described above.

[0183] Among them, the specific structure of the hair care device can be referred to the specific description of the hair care device in the foregoing, and will not be described here.

[0184] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present disclosure.

[0185] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A control method of a hair care device, characterized by, The hair care device comprises a body, an air inlet and an air outlet arranged on the body, a motor arranged in the body for accelerating airflow, a temperature monitoring assembly for monitoring the temperature of the motor, and a wind speed gear adjusting assembly arranged on the body, the wind speed gear adjusting assembly comprising a gear icon; The hair care device comprises a preset gear and a temporary gear, the preset gear being a gear set by the user through the wind speed gear adjusting assembly, the gear icon corresponding to the preset gear being displayed, and the temporary gear being a gear corresponding to the actual rotating speed of the motor; The control method of the hair care device comprises: determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly; controlling the motor to reduce speed according to a first preset step length when the current temperature of the motor exceeds a first preset value; determining whether the rotating speed of the motor after speed reduction drops a gear according to the rotating speed of the motor after speed reduction and the current set temporary gear; if the rotating speed drops a gear, reducing the temporary gear and outputting prompt information through the flashing gear icon; when receiving the preset gear set by the user based on the prompt information, determining whether the rotating speed corresponding to the new preset gear is greater than the rotating speed corresponding to the temporary gear after gear reduction, if yes, determining that the new preset gear is invalid, the gear icon remains flashing, otherwise, the new preset gear is valid; when the new preset gear is valid, the gear icon is adjusted corresponding to the preset gear, the flashing of the gear icon is cancelled, and the motor is adjusted in speed with a third preset step length, the third preset step length being greater than a fourth preset step length, the fourth preset step length being a speed adjustment step length when the preset gear is adjusted without receiving the prompt information.

2. The control method of the hair care apparatus according to claim 1, wherein The wind speed gear adjusting assembly comprises a gear button; when different wind speed gears correspond to different gear buttons and the same gear icon, if the new preset gear is valid, the gear icon is on, otherwise, the gear icon is flashing; when different wind speed gears correspond to the same gear button and different gear icons, the preset gear is determined according to the number of times of pressing the gear button; if the preset gear set according to the number of times of pressing the gear button is valid, the corresponding gear icon is on, otherwise, the gear icon is flashing.

3. The control method of the hair care apparatus according to claim 1, wherein The motor comprises a plurality of stator windings, and the temperature monitoring assembly is inserted between two of the stator windings; The temperature monitoring assembly is fixed between the two stator windings by means of glue with heat conductivity; The temperature monitoring assembly comprises a thermistor; The step of determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly comprises determining the current temperature of the motor according to the corresponding relationship between the resistance value of the thermistor and the temperature of the motor and the current resistance value of the thermistor.

4. The control method of the hair care apparatus according to claim 1, wherein The first preset step length is K1*(T1-T2), wherein K1 is a preset coefficient, T1 is the current temperature of the motor, and T2 is the first preset value; The first preset value is between 130°C and 140°C; The gears of the hair care device comprise a high gear, a middle gear and a low gear, the high gear corresponding to a first rotating speed of the motor, the middle gear corresponding to a second rotating speed of the motor, and the low gear corresponding to a third rotating speed of the motor. The step of determining whether the motor speed after the speed reduction drops a gear according to the motor speed after the speed reduction and the current temporary gear setting comprises: if the current temporary gear setting is high gear, and the maximum motor speed after the speed reduction is lower than the first speed and higher than the second speed, it is determined that the motor speed after the speed reduction drops a gear. The step of reducing the temporary gear and outputting prompt information through a flashing gear icon comprises: reducing the temporary gear from high gear to medium gear, and outputting prompt information through a flashing gear icon. And / or, The step of determining whether the motor speed after the speed reduction drops a gear according to the motor speed after the speed reduction and the current temporary gear setting comprises: if the current temporary gear setting is medium gear, and the maximum motor speed after the speed reduction is lower than the second speed and higher than the third speed, it is determined that the motor speed after the speed reduction drops a gear. The step of reducing the temporary gear and outputting prompt information through a flashing gear icon comprises: reducing the temporary gear from medium gear to low gear, and outputting prompt information through a flashing gear icon. And / or, The step of determining whether the motor speed after the speed reduction drops a gear according to the motor speed after the speed reduction and the current temporary gear setting comprises: if the current temporary gear setting is low gear, and the maximum motor speed after the speed reduction is lower than the third speed, it is determined that the motor speed after the speed reduction drops a gear. The step of reducing the temporary gear and outputting prompt information through a flashing gear icon comprises: outputting prompt information that the maximum motor speed after the speed reduction is lower than the third speed corresponding to low gear. The hair care device further comprises a display screen arranged on the body, and the prompt information comprises alarm prompt information and display information of the temporary gear after the reduction on the display screen. The hair care device further comprises a human-computer interaction area, and the human-computer interaction area comprises the wind speed gear adjusting assembly; the human-computer interaction area is arranged in another area of the hair care device independently of the display screen, or the human-computer interaction area and the display screen share the same area on the hair care device. The control method of the hair care device further comprises: determining whether the current temperature of the motor is lower than a second preset value when the current temperature of the motor does not exceed the first preset value; if yes, determining whether the motor has been subjected to speed reduction processing; if yes, controlling the motor to increase speed at a second preset step length; the second preset step length is K2*(T3-T1), wherein K2 is a preset coefficient, K2 K1 / K2>1.5; After the step of controlling the motor to increase speed at a second preset step length, the control method of the hair care device further comprises: adjusting the temporary gear according to the motor speed after the speed increase, the current temporary gear setting, and a preset gear; The step of adjusting the temporary gear according to the motor speed after the speed increase, the current temporary gear setting, and a preset gear comprises: If the current set temporary gear is middle gear, the preset gear is high gear, and the maximum rotating speed of the motor after speed-up is greater than the second rotating speed, the temporary gear is restored to high gear. If the current set temporary gear is low gear, the preset gear is middle gear, and the maximum rotating speed of the motor after speed-up is greater than the third rotating speed, the temporary gear is restored to middle gear.

5. The control method of the hair care apparatus according to claim 1, wherein, The control method of the hair care device further comprises: setting a plurality of temperature intervals; determining the temperature interval in which the current temperature of the motor falls in combination with the plurality of temperature intervals; controlling the motor to reduce speed according to the corresponding speed reduction amount according to the temperature interval in which the current temperature of the motor falls, different temperature intervals corresponding to different speed reduction amounts.

6. The control method of a hair care apparatus according to claim 5, wherein For different temperature intervals, the higher the temperature value of each temperature interval, the greater the corresponding speed reduction amount; The plurality of temperature intervals at least include 135℃-140℃, 140℃-145℃ and above 145℃. The step of controlling the motor to reduce speed according to the corresponding speed reduction amount according to the temperature interval in which the current temperature of the motor falls comprises: When it is determined that the current temperature of the motor is located in 135℃-140℃, the motor is controlled to reduce speed by 40 revolutions; When it is determined that the current temperature of the motor is located in 140℃-145℃, the motor is controlled to reduce speed by 200 revolutions; When it is determined that the current temperature of the motor is located above 145℃, the motor is controlled to reduce speed by 400 revolutions.

7. The control method of the hair care apparatus according to claim 5, wherein After the step of controlling the motor to reduce speed according to the corresponding speed reduction amount, the control method of the hair care device further comprises: determining whether the rotating speed of the motor after speed reduction is less than the rotating speed corresponding to the current set temporary gear; If it is less, determining whether the rotating speed of the motor after speed reduction is less than a third preset value; If it is less, confirming that the motor has failed.

8. A control method of a hair care device, characterized by, The hair care device comprises a machine body, an air inlet and an air outlet arranged on the machine body, a motor arranged in the machine body for accelerating airflow, a temperature monitoring assembly for monitoring the temperature of the motor, a heating assembly for heating airflow, and a wind speed gear adjusting assembly arranged on the machine body; The hair care device comprises a preset gear and a temporary gear, the preset gear being the gear set by the user through the wind speed gear adjusting assembly, and the temporary gear being the gear corresponding to the actual rotating speed of the motor; The control method of the hair care device comprises: determining the current temperature of the motor according to the monitoring value of the temperature monitoring assembly; controlling the motor to reduce speed according to a first preset step length when the current temperature of the motor exceeds a first preset value, and simultaneously reducing the heating power of the heating assembly; determining whether the rotating speed of the motor after speed reduction drops a gear according to the rotating speed of the motor after speed reduction and the current set temporary gear; If it drops a gear, reducing the temporary gear and outputting a prompt information, and simultaneously restoring and increasing the heating power of the heating assembly.

9. The control method of the hair care apparatus according to claim 8, characterized by, After the temporary gear is reduced, the heating power of the heating assembly is restored to the heating power set before the heating power of the heating assembly is reduced.

10. A hair care device, characterized in that The hair care device comprises a body, an air inlet and an air outlet arranged on the body, a motor arranged in the body for accelerating airflow, and a temperature monitoring assembly for monitoring the temperature of the motor; The hair care device further comprises a master control module electrically connected to the motor and the temperature monitoring assembly respectively, and configured to execute the control method of the hair care device according to any one of claims 1-7, or execute the control method of the hair care device according to any one of claims 8-9.

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