Hot air comb

Abstract

The utility model discloses a hot air comb which comprises a comb body, comb teeth are arranged on the comb body, an air outlet and an air inlet are formed in the comb body, and a power input end, a main control unit, a voltage detection unit, an air blowing mechanism and a heating body are arranged on the comb body. The blowing mechanism generates airflow when driven by the main control unit, and air entering from the air inlet is heated by the heating body and then sent out from the air outlet, so that the effects of combing and blow-drying hair and the like are achieved when a user uses the product. The main control unit is electrically connected with the power supply input end, the voltage detection unit, the air blowing mechanism and the heating body respectively; according to the detection voltage fed back by the voltage detection unit, the voltage of the power input end is judged to be larger than or smaller than the first preset voltage, the corresponding AD conversion module is switched to convert the power input by the power input end into the second preset voltage accordingly, and the second preset voltage is supplied to the heating body and the blowing mechanism for use. Therefore, the device can be adapted to domestic and overseas commercial power.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hairdressing tools, particularly relates to a hot air comb. BACKGROUND

[0002] It is known that hot air comb is a kind of multifunctional hairdressing styling tool for dry hair, curling hair and other styling. And with the improvement of people's material living standards, more and more people travel abroad, and the traditional hot air comb is generally only applicable to domestic mains, cannot meet the needs of people using abroad, and has limitations.

[0003] Therefore, the market urgently needs a hot air comb suitable for global voltage use. INVENTION CONTENTS

[0004] The utility model discloses a main purpose at providing a kind of hot air comb, for solving the problem that existing hot air comb is only applicable to domestic mains and cannot meet the use of abroad.

[0005] In order to solve the above technical problems, the technical scheme provided by the utility model is:

[0006] A kind of hot air comb, including the comb main body with cavity, the comb tooth for combing hair is arranged on the comb main body, the position corresponding comb tooth or at the side of comb tooth is provided with the air outlet communicated with cavity on the comb main body, the air inlet communicated with cavity is also provided on the comb main body, the power input end, main control unit, voltage detection unit, blowing mechanism and heating body are arranged on the comb main body;

[0007] The heating body and blowing mechanism are located in cavity, the heating body generates heat when being driven by main control unit, the blowing mechanism generates airflow when being driven by main control unit and sends out hot air from air outlet after the air entering air inlet is heated by heating body;

[0008] The main control unit is electrically connected with power input end, voltage detection unit, blowing mechanism and heating body respectively, the power input end is used for external power supply, the voltage detection unit feeds back different detection voltages to main control unit according to different voltages input by power input end;The main control unit judges the voltage of power input end greater than or less than first preset voltage according to detection voltage and switches corresponding AD conversion module to convert the power input by power input end into second preset voltage, and second preset voltage is supplied to heating body and blowing mechanism for use respectively.

[0009] Further, the main control unit is single-chip microcomputer, the voltage detection unit includes first resistor and second resistor, the power input end is connected to ground in turn through first resistor and second resistor, and the main control unit is electrically connected with the output end of first resistor.

[0010] Further, the comb body further comprises a temperature detection unit, the main control unit is further electrically connected with the temperature detection unit, the temperature detection unit is used for detecting the temperature of the heating body and generating a corresponding temperature signal according to the temperature and feeding back to the main control unit, and the main control unit adjusts the voltage output to the heating body according to the temperature signal.

[0011] Further, the comb body is provided with a wind speed adjusting switch electrically connected with the main control unit, and the main control unit adjusts the power output to the blowing mechanism when the wind speed adjusting switch is operated by the user.

[0012] The comb body is provided with a temperature adjusting switch electrically connected with the main control unit, and the main control unit adjusts the power output to the heating body when the temperature adjusting switch is operated by the user.

[0013] Further, the cavity is provided with a first support, the first support is provided with a first accommodating groove and a second accommodating groove connected with the first accommodating groove, and the second accommodating groove is communicated with the cavity; the blowing mechanism comprises a motor and a fan blade, the fan blade is located at one end of the motor away from the heating body, the fan blade is at least partially arranged in the second accommodating groove, the motor is at least partially arranged in the first accommodating groove, and the rotating shaft of the motor is at least partially arranged in the second accommodating groove and connected with the fan blade.

[0014] Further, the first support is provided with a base, and the first accommodating groove is located on the base; the base is provided with a plurality of supporting columns, the supporting columns are protruded to form stop blocks on the side away from the rotating shaft of the motor, the stop blocks and the base form an avoiding opening, the distance between the fan blade and the base is less than the distance between the stop block and the base, and the fan blade is provided with an avoiding groove for avoiding the supporting column and the stop block.

[0015] Further, the fan blade comprises a middle support and a plurality of blades arranged on the outer wall of the middle support, the avoiding groove is arranged on the middle support, one end of the middle support close to the motor is an opening, and the other end of the middle support away from the motor is a closed end, and the rotating shaft of the motor is connected with the middle support.

[0016] Further, the comb body comprises a handle and a comb head connected with the handle, the handle is provided with a circuit board, and the main control unit and the voltage detection unit are integrated on the circuit board; the comb teeth and the air outlet are arranged on the comb head, the blowing mechanism, the main control unit and the heating body are arranged in the handle, the air inlet is arranged on the handle and located at one end of the blowing mechanism away from the comb head, and the heating body is located at one end of the blowing mechanism close to the comb head.

[0017] Further, the handle is internally provided with a second support, the circuit board is arranged on the outer side wall of the second support or in the handle and close to the air inlet, the second support is internally provided with a mounting cavity communicated with the air outlet, and the heating body is arranged in the mounting cavity.

[0018] Further, the comb head is hollow, the number of the air outlets is multiple, and the air outlets are arranged on the side wall of the comb head;

[0019] The first air guide member is arranged in the interior of the comb head and close to the handle, the second air guide member is arranged in the interior of the comb head and away from the handle, the air guide channel communicated with the mounting cavity is arranged on the first air guide member, the opening size of the air guide channel gradually increases in the direction away from the handle, the size of the cross section of the second air guide member at the end away from the handle is greater than that of the other end close to the handle, the length of the second air guide member is at least greater than one third of the length of the comb head, the length of the first air guide member is at least greater than one sixth of the length of the comb head, and the opening size of the air guide channel at the end away from the handle is greater than that of the second air guide member at the end close to the handle.

[0020] Compared with the prior art, the utility model discloses the following beneficial effects: the utility model discloses the comb tooth, heating body and blower mechanism are configured on the comb main part, and the airflow generated by the blower mechanism is heated through the heating body and sent out from the air outlet beside the comb tooth, so that the user uses the product to realize the hairdressing, hair drying and hair curling and other functions. In addition, the utility model also uses the voltage detection unit and the main control unit, detects the voltage of the power input end, and feeds back the detected voltage to the main control unit. The main control unit judges whether the voltage input by the power input end is greater than or less than the first preset voltage, and switches the AD conversion module adapted to the power input by the power input end for use, so as to convert the power input by the power input end into the second preset voltage, and use the second preset voltage for the heating body and the blower mechanism. When different voltages are input by the power input end, the voltage suitable for the heating body and the blower mechanism can be converted, so that the hot air comb can not only adapt to the domestic 220V voltage, but also adapt to the voltage different from that in China, improve the practicability of the hot air comb, and meet the needs of people going abroad. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings from the structures shown in the drawings without creating labor.

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a partially exploded view of the present invention;

[0024] Figure 3 This is a cross-sectional view of the present invention taken along its central axis;

[0025] Figure 4 for Figure 3 Enlarged view of region a in the middle;

[0026] Figure 5 This is an exploded view of the blower mechanism and the first support of this utility model;

[0027] Figure 6 This is an exploded view of another embodiment of the blower mechanism and the first bracket of this utility model;

[0028] Figure 7 This is a schematic diagram of the principle of this utility model;

[0029] Figure 8 This is a circuit diagram showing the electrical connection between the power input terminal, the heating element, and the voltage detection unit of this utility model.

[0030] Figure 9 This is a circuit diagram of the main control unit of this utility model;

[0031] Figure 10 This is a circuit diagram of the temperature detection unit of this utility model. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] See attached document Figures 1 to 10 A hot air comb as described in this embodiment of the present invention.

[0034] The hot air comb comprises a comb body 100 provided with cavities 30, the comb body 100 is provided with comb teeth 31 for combing hair, air outlets 32 are arranged on the comb body 100 at positions corresponding to the comb teeth 31 or beside the comb teeth 31 and are communicated with the cavities 30, air inlets 21 are also arranged on the comb body 100 and are communicated with the cavities 30, the comb body 100 is provided with a power input end 1, a main control unit 42, a voltage detection unit 41, a blowing mechanism and a heating body 9. The heating body 9 and the blowing mechanism are located in the cavities 30, the heating body 9 generates heat when being driven by the main control unit 42, the blowing mechanism generates air flow when being driven by the main control unit 42, the air entering the air inlets 21 is heated by the heating body 9 and then is sent out from the air outlets 32. The main control unit 42 is electrically connected with the power input end 1, the voltage detection unit 41, the blowing mechanism and the heating body 9, the power input end 1 is used for external power supply, the voltage detection unit 41 feeds back different detection voltages to the main control unit 42 according to different voltages input by the power input end 1. The main control unit 42 judges whether the voltage input by the power input end 1 is greater than or less than a first preset voltage according to the detection voltage and switches corresponding AD conversion modules to convert the power input by the power input end 1 into a second preset voltage, and the second preset voltage is supplied to the heating body 9 and the blowing mechanism.

[0035] The comb body 100 is provided with the comb teeth 31, the heating body 9 and the blowing mechanism, and the air flow generated by the blowing mechanism is heated by the heating body 9 and then is sent out from the air outlets 32 beside the comb teeth 31, so that the product can be used for combing hair, drying hair and styling hair when the hair is curled. In addition, the voltage detection unit 41 is used in cooperation with the main control unit 42, the voltage detection unit 41 detects the voltage of the power input end 1 and feeds back the detected detection voltage to the main control unit 42, the main control unit 42 judges whether the voltage input by the power input end 1 is greater than or less than a first preset voltage according to the detection voltage and switches the AD conversion module to adapt to the power input by the power input end 1, so as to convert the power input by the power input end 1 into a second preset voltage, and the second preset voltage is used for the heating body 9 and the blowing mechanism, so that the voltage input by the power input end 1 can be converted into the voltage suitable for the heating body 9 and the blowing mechanism when the voltage input by the power input end 1 is different, the hot air comb can be adapted to the domestic power supply voltage of 220V and can be adapted to the voltage different from that in China, the practicability of the hot air comb is improved, the demand of people going abroad is met, and the heating body 9 and the blowing mechanism are not damaged.

[0036] In an embodiment, the main control unit 42 is a single-chip microcomputer, the voltage detection unit 41 comprises a first resistor R1 and a second resistor R2, the power input end 1 is grounded in sequence through the first resistor R1 and the second resistor R2, and the main control unit 42 is electrically connected with the output end of the first resistor R1, that is, electrically connected with the input end of the second resistor R2. When different voltages are input to the power input end 1, different detection voltages can be fed back to the main control unit 42 after being divided by the first resistor R1 and the second resistor R2, and the main control unit 42 can determine whether the voltage input to the power input end 1 is greater than or less than a first preset voltage based on the detection voltage. The voltage detection unit 41 has a simple component structure, and the main control unit 42 is a single-chip microcomputer, which can effectively simplify the electronic components of the hot air comb of the utility model, effectively reduce the size of the hot air comb, miniaturize the hot air comb, and facilitate the user to carry and use it outdoors. Of course, in other embodiments, the voltage detection unit 41 can also use an integration circuit, an amplification circuit, etc., and can also achieve the feedback of the voltage input to the power input end 1 to the main control unit 42 after detection.

[0037] Specifically, the power input end 1 is a power line for external power supply in the hot air comb, the heating body 9 can be a heating wire or a ceramic heating sheet, etc., the main control unit 42 can use a chip with an 8-bit CPU kernel and a FLASH memory and / or an EEPROM memory, or can be a chip with an ARM architecture type, such as an MC32F7071, MC32F7073, etc. That is, the main control unit 42 can determine whether the voltage of the power input end 1 is lower than or greater than the first preset voltage according to the detection voltage fed back by the voltage detection unit 41 through the internal program, when it is determined that the voltage input to the power input end 1 is less than the first preset voltage, it is determined that the voltage input to the power input end 1 is 120V, the internal switching of the main control unit 42 is switched to an AD conversion circuit suitable for 120V to convert the input power into a second preset voltage and output it to the heating body 9 and the blowing mechanism for use; when the main control unit 42 determines that the voltage input to the power input end 1 is greater than the first preset voltage according to the detection voltage, it is determined that the voltage input to the power input end 1 is 220V, and the internal switching of the main control unit 42 is switched to an AD conversion module suitable for 220V to convert the input power into a second preset voltage and output it to the heating body 9 and the blowing mechanism for use. At present, the domestic power of each country is generally 220V or 120V, that is, the first preset voltage can be configured as 150V, 165V, 180V, etc., and the first preset voltage is not limited here.

[0038] In an embodiment, the comb body 100 further comprises a temperature detection unit 43, and the main control unit 42 is further electrically connected with the temperature detection unit 43, the temperature detection unit 43 is used for detecting the temperature of the heating body 9 and generating a corresponding temperature signal according to the temperature and feeding back to the main control unit 42, and the main control unit 42 adjusts the voltage output to the heating body 9 according to the temperature signal, so that the heating body 9 generates a constant temperature. Specifically, the temperature detection unit 43 can be a temperature sensor, a thermistor or the like, and the main control unit 42 can further output a second preset voltage to the temperature detection unit 43, so that the temperature detection unit 43 will not be damaged when different voltages are input at the power input end 1, and the temperature detection unit 43 can work normally.

[0039] In an embodiment, the comb body 100 is provided with a wind speed adjusting switch 23 electrically connected with the main control unit 42, and the main control unit 42 adjusts the power output to the blowing mechanism when the wind speed adjusting switch 23 is operated by the user, so as to realize that the user can adjust the size of the wind power blown out by the blowing mechanism.

[0040] In an embodiment, the comb body 100 is provided with a temperature adjusting switch 22 electrically connected with the main control unit 42, and the main control unit 42 adjusts the power output to the heating body 9 when the temperature adjusting switch 22 is operated by the user, so as to realize that the user can adjust the temperature of the wind blown out from the air outlet 32 for use.

[0041] In an embodiment, in order to improve the compactness of the structure of the utility model, a first support 7 is arranged in the cavity 30, a first accommodating groove 75 and a second accommodating groove 77 connected with the first accommodating groove 75 are formed in the first support 7, and the second accommodating groove 77 and the first accommodating groove 75 are both communicated with the cavity 30. The blowing mechanism comprises a motor 6 and a fan blade 5, the fan blade 5 is located at one end of the motor 6 away from the heating body 9, the fan blade 5 is at least partially arranged in the second accommodating groove 77, the motor 6 is at least partially arranged in the first accommodating groove 75, and the rotating shaft of the motor 6 is at least partially arranged in the second accommodating groove 77 and connected with the fan blade 5, so that the airflow generated by the blowing mechanism driven by the main control unit 42 can be heated by the heating body 9 to form hot air and then sent out from the air outlet 32.

[0042] In an embodiment, the first support 7 is provided with a base 72, and the first accommodating groove 75 is located on the base 72. The base 72 is provided with a plurality of support columns 74, the support columns 74 are protruded to form a stop block 73 on the side away from the rotating shaft of the motor 6, and the stop block 73 and the base 72 form an avoiding opening 76. The distance between the fan blade 5 and the base 72 is less than the distance between the stop block 73 and the base 72, and the fan blade 5 is provided with an avoiding groove 53 for avoiding the support column 74 and the stop block 73. Through the above structure, when the motor 6 drives the fan blade 5 to rotate to generate airflow, and the hair accidentally enters the cavity 30 from the air inlet 21 and is placed in the second accommodating groove 77, the hair can be wound on the avoiding opening 76 under the action of the baffle and the protrusion, so as to prevent the hair from winding on the rotating shaft of the motor 6, play a role in blocking the hair, prevent the hair from locking the motor 6, and effectively reduce the safety hazard problem caused by the motor 6.

[0043] Among them, the number of support columns 74 can be multiple, and are distributed at intervals on the outside of the rotating shaft of the motor 6. Alternatively, the number of support columns 74 can also be one, that is, the support column 74 is annular, which can also effectively play a role in blocking the hair.

[0044] Specifically, the fan blade 5 includes a middle support 52 and a plurality of blades 51 arranged around the outer wall of the middle support 52. The avoiding groove 53 is provided on the middle support 52. The middle support 52 is open at the end close to the motor 6, the rotating shaft of the motor 6 is connected with the middle support 52, and the end of the middle support 52 away from the motor 6 is a closed end, so as to prevent the hair from entering and winding on the rotating shaft of the motor 6 from the end of the middle support 52 away from the motor 6.

[0045] In any of the above embodiments, the comb body 100 includes a handle 2 and a comb head 3 connected with the handle 2. The handle 2 is provided with a circuit board 4, and the main control unit 42 and the voltage detection unit 41 are integrated on the circuit board 4. The comb teeth 31 and the air outlet 32 are provided on the comb head 3. The blowing mechanism, the main control unit 42 and the heating body 9 are provided in the handle 2. The air inlet 21 is provided on the handle 2 and located at the end of the blowing mechanism away from the comb head 3. The heating body 9 is located at the end of the blowing mechanism close to the comb head 3. The handle 2 is used for a user to hold the product. Through the above structure, the motor 6 drives the fan blade 5 to rotate to generate airflow, and the airflow is heated by the heating body 9 and then sent out from the air outlet 32.

[0046] In an embodiment, the second support 8 is arranged in the handle 2, the circuit board 4 is arranged on the outer side wall of the second support 8, the mounting cavity 81 in communication with the air outlet 32 is arranged in the second support 8, and the heating body 9 is arranged in the mounting cavity 81. The second support 8 can isolate the temperature heated by the heating body 9, so that the circuit board 4 can be prevented from being damaged. The first support 7 can be integrated with the second support 8, or the first support 7 and the second support 8 are two parts, the first support 7 is arranged at the end of the second support 8 away from the comb 3, and the mounting cavity 81 is in communication with the first containing groove 75. In other embodiments, the circuit board 4 can also be arranged in the handle 2 and close to the air inlet 21, so that the problem that the circuit board 4 is damaged by the heating of the heating body 9 can also be prevented.

[0047] In an embodiment, the comb 3 is hollow, the cavity 30 is formed by the cavity in the comb 3 and the cavity in the handle 2. The comb 3 is connected with the second support 8, the number of the air outlets 32 is multiple, and the air outlets 32 are arranged on the side wall of the comb 3. The first air guide 36 is arranged in the comb 3 and close to the handle 2, the first air guide 36 is connected with the second support 8, the second air guide 34 is arranged in the comb 3 and away from the handle 2, the air guide channel 33 in communication with the mounting cavity 81 is arranged on the first air guide 36, the opening size of the air guide channel 33 gradually increases in the direction away from the handle 2, that is, the air guide channel 33 is in a trumpet shape, so that the hot air formed can be diffused into the cavity in the comb 3 as much as possible. The size of the cross section of the second air guide 34 away from the handle 2 is greater than the size of the cross section of the second air guide 34 close to the handle 2, the length of the second air guide 34 is at least greater than one third of the length of the comb 3, the length of the first air guide 36 is at least greater than one sixth of the length of the comb 3, and the opening size of the air guide channel 33 away from the handle 2 is greater than the size of the second air guide 34 close to the handle 2. The hot air can be effectively blown out from the air outlets 32 in a shorter distance by the first air guide 36 and the second air guide 34, the hot air can be more uniformly distributed on the surface of the comb 3, and the hot air can be more smoothly blown out from the air outlets 32.

[0048] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0049] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" throughout the text includes three schemes, taking A and / or B as an example, including A technical solution, B technical solution, and A and B technical solution that meet at the same time; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0050] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A hot air comb, characterized in that, The utility model provides a hairdressing comb, comprising a comb body with a cavity, wherein the comb body is provided with comb teeth for combing hair, and the comb body is provided with an air outlet communicating with the cavity at the position of the comb teeth or beside the comb teeth, and the comb body is also provided with an air inlet communicating with the cavity; the comb body is provided with a power input end, a main control unit, a voltage detection unit, a blowing mechanism and a heating body; the heating body and the blowing mechanism are located in the cavity, the heating body generates heat when driven by the main control unit, and the blowing mechanism generates airflow when driven by the main control unit and sends out hot air from the air outlet after the air entering the air inlet is heated by the heating body; the main control unit is electrically connected with the power input end, the voltage detection unit, the blowing mechanism and the heating body, the power input end is used for external power supply, the voltage detection unit feeds back different detection voltages to the main control unit according to different voltages input by the power input end, the main control unit judges whether the voltage of the power input end is greater than or less than a first preset voltage according to the detection voltage and switches the corresponding AD conversion module to convert the power input by the power input end into a second preset voltage, and the second preset voltage is supplied to the heating body and the blowing mechanism.

2. The hot air comb of claim 1, wherein, the main control unit is a single-chip microcomputer, the voltage detection unit comprises a first resistor and a second resistor, the power input end is connected to the ground through the first resistor and the second resistor in sequence, and the main control unit is electrically connected with the output end of the first resistor.

3. The hot air comb of claim 1, wherein, the comb body is also provided with a temperature detection unit, the main control unit is also electrically connected with the temperature detection unit, the temperature detection unit is used for detecting the temperature of the heating body, generating a corresponding temperature signal according to the temperature and feeding back the temperature signal to the main control unit, and the main control unit adjusts the voltage output to the heating body according to the temperature signal.

4. The hot air comb of claim 3, wherein, the comb body is provided with a wind speed adjusting switch electrically connected with the main control unit, and the main control unit adjusts the power output to the blowing mechanism when the wind speed adjusting switch is operated by a user; the comb body is provided with a temperature adjusting switch electrically connected with the main control unit, and the main control unit adjusts the power output to the heating body when the temperature adjusting switch is operated by a user.

5. The hot air comb of claim 1, wherein, a first support is arranged in the cavity, the first support is provided with a first accommodating groove and a second accommodating groove connected with the first accommodating groove, and the second accommodating groove communicates with the cavity; the blowing mechanism comprises a motor and a fan blade, the fan blade is located at one end of the motor away from the heating body, the fan blade is at least partially arranged in the second accommodating groove, the motor is at least partially arranged in the first accommodating groove, and the rotating shaft of the motor is at least partially arranged in the second accommodating groove and connected with the fan blade.

6. The hot air comb of claim 5, wherein, a base is arranged in the first support, and the first accommodating groove is located on the base; a plurality of supporting columns are arranged on the base, the supporting columns are protruded to form stop blocks on the side away from the rotating shaft of the motor, an avoiding opening is formed between the stop blocks and the base, the distance between the fan blade and the base is less than the distance between the stop blocks and the base, and an avoiding groove is formed in the fan blade for avoiding the supporting columns and the stop blocks.

7. The hot air comb of claim 6, wherein, The fan blade comprises a middle support and a plurality of blades arranged around the outer wall of the middle support, the avoiding groove is arranged on the middle support, the middle support is open at the end close to the motor, and the end away from the motor is closed, and the rotating shaft of the motor is connected with the middle support.

8. The hot air comb of claim 1, wherein, The comb body comprises a handle and a comb head connected with the handle, the handle is provided with a circuit board, and the main control unit and the voltage detection unit are integrated on the circuit board; the comb teeth and the air outlet are arranged on the comb head, the blowing mechanism, the main control unit and the heating body are arranged in the handle, the air inlet is arranged on the handle and located at the end of the blowing mechanism away from the comb head, and the heating body is located at the end of the blowing mechanism close to the comb head.

9. The hot air comb of claim 8, wherein, The handle is provided with a second support, the circuit board is arranged on the outer wall of the second support or in the handle close to the air inlet, the second support is provided with an installation cavity communicated with the air outlet, and the heating body is arranged in the installation cavity.

10. The hot air comb of claim 9, wherein, The comb head is hollow, the number of the air outlets is multiple, and the air outlets are arranged around the side wall of the comb head; The first air guide member is arranged in the comb head close to the handle, the second air guide member is arranged in the comb head away from the handle, the air guide channel communicated with the installation cavity is arranged on the first air guide member, the opening size of the air guide channel gradually increases in the direction away from the handle, the size of the cross section of the second air guide member at the end away from the handle is larger than that of the second air guide member at the end close to the handle, the length of the second air guide member is at least greater than one third of the length of the comb head, the length of the first air guide member is at least greater than one sixth of the length of the comb head, and the opening size of the air guide channel at the end away from the handle is greater than that of the second air guide member at the end close to the handle.

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