Hair drying device

Abstract

The utility model relates to a hair drying device which comprises a machine body which comprises a control panel, a motor and a first circuit module, the motor and the first circuit module are electrically connected with the control panel, the machine body is provided with an air inlet and an air outlet end, and the motor is used for enabling external airflow to flow into the machine body through the air inlet and flow through the air outlet end to be discharged out of the machine body; the at least one air nozzle is detachably connected to the machine body and comprises a second circuit module, and the air nozzle is used for receiving the airflow exhausted by the air outlet end, treating the received airflow and then exhausting the airflow; the first circuit module can independently form an access, and the first circuit module and the second circuit module can form an access together; the control panel can detect the access so as to judge the installation state and / or type of the tuyere. According to the hair drying device, the control panel can recognize whether the current machine body is used independently or used in cooperation with a certain air nozzle, the recognition process does not need to depend on complex structural design, the requirement for the structural design is low, and the reliability of the recognition result is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a hair drying device. BACKGROUND

[0002] A hair dryer is a common household appliance. Some hair dryers on the market are provided with multiple replaceable nozzles that can be installed on the body, so that the hair dryer can not only dry hair but also style hair. For example, a nozzle with a negative ion function can make the airflow carry negative ions, which is beneficial to keeping hair shiny and moist; a nozzle with an essential oil component can make the airflow carry atomized essential oil, so that the hair is more moisturized and emits fragrance. When the body is used alone or in combination with different types of nozzles, the motor and heating wire and other components need to match the corresponding power. Therefore, when using such a hair dryer, the control panel needs to identify the current state and control the motor and heating wire and other components based on it.

[0003] In related technologies, when the control panel identifies the current state, either a receiver is provided on the body and different sensors are provided on different nozzles to receive corresponding signals for judgment, or a push rod is provided on the body and different docking structures are provided on different nozzles to be docked by the push rod and the corresponding docking structure for judgment. However, the first method is prone to misjudgment due to sensor problems, and the second method has high requirements for structural design. Therefore, there is an urgent need for an identification method that has low requirements for structural design and high reliability of identification results. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a hair drying device, the control panel of which can identify whether the body is used alone or in combination with a certain nozzle, and the identification process does not need to rely on complex structural design, has low requirements for structural design, and has high reliability of identification results.

[0005] A hair drying device, comprising:

[0006] a body comprising a control panel, and a motor and a first circuit module electrically connected thereto, the body having an air inlet and an air outlet end, the motor being configured to cause external airflow to flow into the body through the air inlet and to flow through the air outlet end and out of the body; and

[0007] at least one nozzle detachably connected to the body and comprising a second circuit module, the nozzle being configured to receive the airflow discharged from the air outlet end and to discharge the received airflow after processing;

[0008] The first circuit module can form a path alone, and the first circuit module can form a path together with the second circuit module; the control board can detect the path to determine the installation state and / or type of the air nozzle.

[0009] In some embodiments, the control board can control the hair drying device to switch to a corresponding working mode based on the installation state and type of the air nozzle.

[0010] In some embodiments, the machine body includes a heating wire electrically connected to the control board, and the control board can control the power of the heating wire and the motor based on the installation state and type of the air nozzle.

[0011] In some embodiments, the control board can determine the installation state and type of the air nozzle by detecting the voltage of the path.

[0012] In some embodiments, the second circuit module in each air nozzle has a corresponding resistance, so that the voltage of the path detected by the control board is different.

[0013] In some embodiments, after the control board determines that the air nozzle is in the installation state, the control board can control the first circuit module to supply power to the electrical element in the air nozzle.

[0014] In some embodiments, the first circuit module is connected with a first NTC temperature detector, and the second circuit module is connected with a second NTC temperature detector.

[0015] When the control board determines that the air nozzle is in the non-installation state, the control board reads the detection value of the first NTC temperature detector.

[0016] When the control board determines that the air nozzle is in the installation state, the control board reads the detection value of the second NTC temperature detector.

[0017] In some embodiments, the air nozzle includes a first electrical connector electrically connected to the second circuit module, the machine body includes a second electrical connector, and the first circuit module is electrically connected between the second electrical connector and the control board.

[0018] When the hair drying device is in the installation state in which the air nozzle is installed to the machine body, the first electrical connector and the second electrical connector are in contact and conductive to make the first circuit module and the second circuit module form the path together.

[0019] In some embodiments, the second electrical connector is arranged at the air outlet end and is located lower than the air outlet end.

[0020] In some embodiments, the air outlet end has an inwardly recessed accessory mounting slot, the second electrical connector is located in the accessory mounting slot, and in the mounted state, the air nozzle extends into the accessory mounting slot, and the first electrical connector is in contact and conduction with the second electrical connector.

[0021] In some embodiments, the first electrical connector comprises a spring needle, and the second electrical connector comprises a conductive sheet located in the accessory mounting slot and used for elastically abutting against the spring needle.

[0022] In some embodiments, the body comprises a bracket, the motor and the control board are both mounted in the bracket, the second electrical connector comprises a wire connecting section electrically connected with the first circuit module, and a fixing sheet connected between the wire connecting section and the conductive sheet, the conductive sheet is bent relative to the fixing sheet, and the conductive sheet is inserted into the bracket, and the fixing sheet is fixed to the bracket.

[0023] In some embodiments, the conductive sheet comprises a contact portion connected to the fixing sheet, and a protruding portion protruding outward from one end of the contact portion away from the fixing sheet, and the contact portion is used for elastically abutting against the spring needle.

[0024] An outer side wall of the bracket is provided with an inwardly recessed accommodating slot, and a part of a groove bottom wall of the accessory mounting slot is recessed to form a limiting slot in communication with one end of the accommodating slot, and the bracket is further provided with an insertion slot located in the inner side of the limiting slot and in communication therewith.

[0025] The wire connecting section and the fixing sheet are accommodated in the accommodating slot, the contact portion is located in the limiting slot, and the protruding portion is inserted into the insertion slot.

[0026] In some embodiments, the fixing sheet is fixed in the accommodating slot by a threaded fastener.

[0027] In some embodiments, a surface of the threaded fastener is coated with an insulating layer.

[0028] In some embodiments, a width of the limiting slot is less than 5 mm; and / or,

[0029] A depth of the accessory mounting slot is greater than 5 mm.

[0030] In some embodiments, the body comprises a heating wire, a bracket, and a hollow protective cover, the protective cover, the motor, and the control board are all mounted in the bracket, the heating wire is located on a side of the motor away from the air inlet, the protective cover is located on a side of the heating wire away from the motor, and an annular accessory mounting slot is formed between an outer wall of the protective cover and an inner wall of the bracket.

[0031] In some embodiments, the air nozzle comprises a joint member, an end of the joint member is annular and inserted into the accessory mounting slot, the elastic needle is exposed outside the joint member, and the airflow in the machine body flows into the air nozzle through the joint member.

[0032] In some embodiments, the joint member comprises a joint side plate and a joint end plate connected to an end of the joint side plate away from the machine body, an end of the joint side plate away from the joint end plate is inserted into the accessory mounting slot for the airflow in the machine body to flow in.

[0033] In some embodiments, the joint member comprises a guard plate outwardly protruding relative to the joint side plate, the guard plate is located outside the elastic needle.

[0034] In some embodiments, the guard plate and the joint side plate are connected through a boss protruding from an end of the joint side plate, the boss has a guide wall for cooperating with a guide slope on a slot bottom wall of the accessory mounting slot.

[0035] In some embodiments, the elastic needle comprises a needle body, a needle seat, an elastic member in the needle seat and a contact ball, a part of the needle body is inserted into the needle seat and a part of the needle body is exposed outside the needle seat, the contact ball is located between the needle body and the elastic member in the needle seat, and the elastic member in the needle seat is used to apply an elastic force to the needle body through the contact ball towards the conductive sheet.

[0036] In some embodiments, the air nozzle comprises a functional assembly for processing the airflow, the needle seat and the functional assembly are electrically connected, the needle body is gap-fitted with the needle seat and electrically connected with the needle seat, and an end surface of the needle body close to the contact ball is beveled.

[0037] In some embodiments, the air nozzle has a clamping slot with an open end, the machine body has a clamping block, the clamping block can enter the clamping slot when the machine body and the air nozzle are positionally aligned, the machine body and the air nozzle are simultaneously relatively rotated and relatively moved along the axial direction of the machine body when the machine body and the air nozzle are positionally aligned, and the clamping block is clamped into the clamping slot.

[0038] In some embodiments, the machine body comprises a locking member and a locking elastic member connected to each other, the locking elastic member is used to apply an elastic force to the locking member towards the air nozzle when the clamping block is clamped into the clamping slot, so that the locking member is inserted into the clamping slot to prevent the clamping block from exiting the clamping slot.

[0039] In some embodiments, the locking member comprises a locking portion, a transmission portion, and a push button, the locking portion and the push button are both fixed to the transmission portion, and the locking portion and the locking elastic member are respectively located at both ends of the transmission portion, the locking elastic member is used to push the locking portion to be close to the tuyere through the transmission portion, and the push button is configured to be operatively moved to push the locking portion to be away from the tuyere through the transmission portion.

[0040] In some embodiments, the tuyere comprises a functional assembly for processing airflow, the first electrical connector comprises a contact sheet electrically connected to the needle, and the functional assembly comprises a circuit board and a pin, one end of the pin is electrically connected to the circuit board, and the other end of the pin is electrically connected to the contact sheet.

[0041] In some embodiments, the tuyere comprises an air outlet sleeve, the functional assembly is installed in the air outlet sleeve, the contact sheet comprises a fixed portion and a connecting portion which are connected to each other and are oppositely bent, the connecting portion is inserted into the air outlet sleeve, the fixed portion is fixed to the air outlet sleeve, and the end of the pin away from the circuit board elastically abuts against the connecting portion.

[0042] In some embodiments, the functional assembly has a pin cavity for accommodating the pin, the air outlet sleeve is provided with a contact sheet slot and a pin hole, the pin hole is communicated with the contact sheet slot and the pin cavity, the connecting portion is inserted into the contact sheet slot, and the pin passes through the pin hole and elastically abuts against the connecting portion.

[0043] In some embodiments, the tuyere comprises:

[0044] a housing assembly;

[0045] an air outlet sleeve connected to the housing assembly, the air outlet sleeve is hollow inside, and the housing assembly and the inner side of the air outlet sleeve jointly constitute an installation cavity;

[0046] a functional assembly; and

[0047] a mounting structure comprising a fixing member and a fixing slot, one of the fixing member and the fixing slot is arranged on the functional assembly, and the other is arranged in the installation cavity, the functional assembly is configured to enter the installation cavity along the air outlet sleeve in the axial direction, so that the fixing member elastically retracts in the radial direction along the air outlet sleeve until the fixing member is clamped into the fixing slot.

[0048] In some embodiments, the mounting structure comprises a mounting elastic member, the outer sidewall of the functional assembly is provided with the concave fixing slot, the air outlet sleeve has a mounting hole communicated with the mounting cavity, one end of the mounting elastic member abuts against the air outlet sleeve, and the other end abuts against the fixing member, so that the fixing member is inserted into the mounting cavity through the mounting hole.

[0049] In some embodiments, the mounting cavity comprises a first space and a second space arranged axially along the air outlet sleeve and communicated, the radial dimension of the first space is greater than that of the second space, so as to form a stepped surface therebetween, the functional assembly comprises a first part and a second part, the radial dimension of the first part is greater than that of the second part, the functional assembly is configured to enter the mounting cavity axially along the air outlet sleeve, so that the second part is inserted into the second space, and the first part is inserted into the first space, until the end surface of the first part abuts against the stepped surface, the fixing member is clamped into the fixing slot.

[0050] In some embodiments, the shell assembly comprises an accessory shell and a rear cover connected together, the air outlet sleeve and the rear cover are inserted into the accessory shell and arranged axially along the air outlet sleeve, one end of the air outlet sleeve is connected to the accessory shell, and the other end is connected to the rear cover, a part of the air outlet sleeve and the inner side of the rear cover jointly enclose the second space, and the inner side of a part of the air outlet sleeve encloses the first space.

[0051] In some embodiments, the rear cover comprises a rear cover end plate and a rear cover side plate protruding outward from one end of the rear cover end plate, the rear cover end plate is clamped to the accessory shell, one end of the air outlet sleeve abuts against the rear cover side plate, and the other end abuts against the accessory shell, a part of the air outlet sleeve and the inner side of the rear cover side plate jointly enclose the second space.

[0052] In some embodiments, an annular outer air duct is formed between the air outlet sleeve, the rear cover and the accessory shell, the air outlet sleeve has an airflow hole communicated with the first space and the outer air duct, and airflow in the outer air duct through the machine body can enter the first space through the airflow hole and be discharged after flowing through the functional assembly.

[0053] In some embodiments, the functional assembly is an essential oil atomization assembly, the essential oil atomization assembly comprises an essential oil bottle for storing essential oil, and further comprises a tungsten wire heating member, a flow guide rod and a circuit board, the tungsten wire heating member is electrically connected to the circuit board, the flow guide rod is inserted into the essential oil bottle, and the tungsten wire heating member is connected to the flow guide rod, essential oil in the essential oil bottle can be guided to the tungsten wire heating member through the flow guide rod and be heated and atomized by the tungsten wire heating member.

[0054] The hair drying device, the motor makes the external airflow flow into the body through the air inlet, and is discharged from the body through the air outlet end, the airflow discharged from the body flows into the air nozzle, and is discharged after being processed, so as to perform corresponding care on the hair. The air nozzle is detachably connected to the body, so that different types of care can be performed on the hair by replacing the air nozzle. The first circuit module can form a passage alone, and the first circuit module can form a passage together with the second circuit module. Understandably, when different air nozzles are installed on the body, the passage formed by the first circuit module and the corresponding second circuit module will also be different. Therefore, only the control panel needs to detect the passage, and the installation state and / or type of the air nozzle can be judged, for example, whether the air nozzle is currently installed on the body, and the specific type of the installed air nozzle. In the above identification process, only the first circuit module and the second circuit module need to be arranged, and the type of the passage formed by the control panel is detected, without the need to arrange a complex mechanical docking structure, so that the requirement for structural design is lower, and the identification result is more reliable without the need to rely on a sensor. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 It is a schematic view of a hair drying device in an embodiment of the present application.

[0056] Figure 2 It is a schematic view of the electrical connection of the first electrical connector and the second electrical connector in an embodiment of the present application.

[0057] Figure 3 It is a sectional view of the body in an embodiment of the present application.

[0058] Figure 4 It is a schematic view of the air outlet end of the body in an embodiment of the present application.

[0059] Figure 5 It is a schematic view of the installation of the second electrical connector on the support in an embodiment of the present application.

[0060] Figure 6 It is a schematic view of the second electrical connector in an embodiment of the present application. Figure 5

[0061] Figure 7 It is a schematic view of the air nozzle in an embodiment of the present application.

[0062] Figure 8 It is a schematic view of the air nozzle in an embodiment of the present application.

[0063] Figure 9 It is a schematic view of the joint part in an embodiment of the present application.

[0064] Figure 10 It is a partial view of the needle penetrating through the joint part in an embodiment of the present application. Figure 8

[0065] ​​Figure 11 is a sectional view of a bracket, protective cover and other components in an embodiment of the present application.

[0066] Figure 12 is a schematic view of a first electrical connector in an embodiment of the present application.

[0067] Figure 13 is a sectional view of a bullet in an embodiment of the present application.

[0068] Figure 14 is a schematic view of a detachable connection structure between a machine body and a blast nozzle in an embodiment of the present application.

[0069] Figure 15 is a sectional view of a detachable connection structure between a machine body and a blast nozzle in an embodiment of the present application.

[0070] Figure 16 is a sectional view of a bracket, protective cover and other components in an embodiment of the present application.

[0071] Figure 17 is a schematic view of an air outlet sleeve in an embodiment of the present application.

[0072] Figure 18 is a schematic view of air flow holes and mounting holes on an air outlet sleeve in an embodiment of the present application.

[0073] Figure 19 is a sectional view of an air outlet sleeve in an embodiment of the present application.

[0074] Figure 20 is a sectional view of a blast nozzle in an embodiment of the present application.

[0075] Figure 21 is a sectional view of a blast nozzle in an embodiment of the present application when no functional assembly is installed in the blast nozzle.

[0076] Figure 22 is a schematic view of an accessory shell in an embodiment of the present application.

[0077] Figure 23 is a schematic view of a functional assembly in an embodiment of the present application (the functional assembly is an essential oil atomization assembly).

[0078] Figure 24 is a schematic view of a hair drying device in an embodiment of the present application. Figure 23 is a sectional view of a functional assembly in an embodiment of the present application.

[0079] Figure 25 is a control schematic of a hair drying device in an embodiment of the present application.

[0080] Reference Signs:

[0081] 10, air nozzle; 101, mounting cavity; 1011, first space; 1012, second space; 102, outer air duct; 20, machine body;

[0082] 100, accessory shell; 110, first shell part; 111, support frame; 120, second shell part; 121, guide rib;

[0083] 200, rear cover; 210, rear cover end plate; 211, hollow hole; 220, rear cover side plate;

[0084] 300, air outlet sleeve; 310, sleeve main body; 311, contact sheet slot; 312, pin hole; 313, mounting hole; 314, second guide groove; 315, step surface; 316, opening section; 317, flat section; 320, fixing seat; 321, first guide groove; 330, fixing piece; 340, mounting elastic piece; 350, flow-through piece; 351, air flow hole; 352, notch;

[0085] 400, joint piece; 410, joint side plate; 411, flow-through hole; 412, clamping groove; 413, concave area; 420, joint end plate; 430, guard plate; 440, boss; 441, guide wall;

[0086] 500, functional assembly; 501, first part; 502, second part; 510, essential oil bottle; 511, pin cavity; 512, guide plate; 513, recess; 514, partial protrusion; 520, tungsten wire heating piece; 530, flow guide rod; 540, circuit board; 541, lamp bead; 550, oil absorption cotton; 560, lampshade; 570, diffuser mesh cover; 571, fixing groove; 580, pin;

[0087] 600, first electric connection piece; 610, spring pin; 611, pin body; 612, pin seat; 613, seat inner elastic piece; 614, contact ball; 620, base plate; 630, wire; 640, contact sheet; 641, fixed part; 642, connecting part;

[0088] 700, second electric connection piece; 710, conductive sheet; 711, contact part; 712, protruding part; 720, wire connecting section; 730, fixed sheet;

[0089] 810, machine body shell; 811, air inlet; 812, air outlet end;

[0090] 820, support; 821, accessory mounting groove; 8211, guide inclined surface; 822, containing groove; 823, limiting groove; 824, insertion groove; 825, clamping block;

[0091] 831, power cord; 832, control board; 833, motor; 834, heating wire; 835, protective cover;

[0092] 841, lock; 8411, locking portion; 8412, transmission portion; 8413, push button; 842, locking elastic member;

[0093] 851, switch key; 852, speed adjustment key; 853, cold air switching key. DETAILED DESCRIPTION

[0094] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is intended that the present application cover all modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0095] In the description of the present application, it should be understood that, if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0096] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating 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 the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0097] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connection", "connection", "fixing" and the like appear, these terms should be interpreted 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 specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0098] In this application, unless otherwise explicitly specified and limited, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0099] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are used for illustrative purposes only and are not intended to be limiting.

[0100] Referring to Figures 1 to 4 An embodiment of the present application provides a hair drying device including a nozzle 10 and a body 20. The nozzle 10 includes a first electrical connector 600. The body 20 includes a control board 832, an electric motor 833 electrically connected to the control board 832, and a second electrical connector 700. The nozzle 10 is detachably mounted to the body 20. The body 20 has an air inlet 811. When the hair drying device is in a mounted state in which the nozzle 10 is mounted to the body 20, the electric motor 833 is configured to provide high-speed air. External air flows into the body 20 through the air inlet 811, is accelerated by the electric motor 833, and is discharged after flowing through the nozzle 10. An air outlet end 812 of the body 20 has an inner recessed accessory mounting groove 821. The second electrical connector 700 is located in the accessory mounting groove 821. In the mounted state, the nozzle 10 extends into the accessory mounting groove 821, and the first electrical connector 600 is in contact with the second electrical connector 700 to achieve electrical connection between the nozzle 10 and the body 20.

[0101] The hair drying device described above, the nozzle 10 is detachably mounted to the body 20. Therefore, different nozzles 10 can be mounted and dismounted to make the hair drying device have different care or styling functions. In the mounted state, the nozzle 10 extends into the accessory mounting groove 821, and the first electrical connector 600 is in contact with the second electrical connector 700 to achieve electrical connection between the nozzle 10 and the body 20. Since the second electrical connector 700 is located in the inner recessed accessory mounting groove 821, the accessory mounting groove 821 can protect the second electrical connector 700 from being touched by the user, so as not to be damaged due to accidental touch.

[0102] Specifically, the air outlet of the body 20 is located at the air outlet end 812 thereof, and the air inlet 811 is arranged on the outer side wall of the body 20 at an end away from the air outlet end 812. In the view of the drawings, the air outlet end 812 of the body 20 is the top end thereof, and the air nozzle 10 is connected to the top end of the body 20, with the axial direction of the two being perpendicular, and the radial direction of the air nozzle 10 being parallel to the axial direction of the body 20. The air inlet 811 is located at the bottom end region of the outer side wall of the body 20, and after the airflow flows in from the air inlet 811, it flows upwards through the motor 833, then flows into the air nozzle 10 from the top end of the body 20, and is discharged after being turned by 90 degrees in the air nozzle 10.

[0103] Referring to Figures 2 to 5 , and Figure 13 In some embodiments, the first electrical connecting member 600 includes the elastic pin 610, the second electrical connecting member 700 includes the conductive sheet 710 arranged in the accessory mounting groove 821 and used for elastically abutting against the elastic pin 610, and the conductive sheet 710 is electrically connected to the control panel 832.

[0104] In the view of the drawings, the accessory mounting groove 821 is recessed downward from the top end of the body 20, and the air nozzle 10 extends downward into the accessory mounting groove 821. The needle body 611 of the elastic pin 610 can be extended upward and downward to elastically abut against the conductive sheet 710, so as to realize the electrical connection between the body 20 and the air nozzle 10.

[0105] In the above-mentioned embodiments, the conductive sheet 710 is arranged in the accessory mounting groove 821, so that the conductive sheet 710 can be protected by the accessory mounting groove 821 and be located in a position that is not easy to be touched, thereby being not easy to be damaged by being mistakenly touched.

[0106] In other embodiments, the types of the first electrical connecting member 600 and the second electrical connecting member 700 can be interchanged, that is, the second electrical connecting member 700 includes the elastic pin 610, and the first electrical connecting member 600 includes the conductive sheet 710. At this time, the elastic pin 610 is arranged in the accessory mounting groove 821. In the installed state, the conductive sheet 710 extends into the accessory mounting groove 821 and is in contact with the elastic pin 610 arranged in the accessory mounting groove 821.

[0107] In the embodiments shown in the drawings, the first electrical connecting member 600 and the second electrical connecting member 700 are provided with two sets of matched structures, and the structures of each set are the same.

[0108] Referring to Figures 3 to 7In some embodiments, the body 20 comprises a bracket 820, the motor 833 and the control board 832 are mounted in the bracket 820, the second electrical connector 700 comprises a wire connecting segment 720 electrically connected with the control board 832, and a fixing piece 730 connected between the wire connecting segment 720 and the conductive sheet 710, the conductive sheet 710 is bent relative to the fixing piece 730, and the conductive sheet 710 is inserted into the bracket 820, and the fixing piece 730 is fixed to the bracket 820. In some embodiments, the conductive sheet 710, the wire connecting segment 720 and the wire connecting segment 720 are integrally formed by a conductive metal material to reduce assembly cost.

[0109] Referring to Figure 1 In detail, the body 20 comprises a hollow cylindrical body shell 810, and the air inlet 811 is arranged at the bottom end region of the outer side wall of the body shell 810 in the view. The bracket 820 is in the shape of a hollow cylinder, and is mounted in the body shell 810. The bracket 820 is partially hollowed out at the region corresponding to the air inlet 811, so that the airflow flowing into the air inlet 811 can flow through the hollowed-out region to the inside of the bracket 820 and flow through the motor 833.

[0110] More specifically, the fixing piece 730 extends along the axial direction of the body 20, and the conductive sheet 710 extends along the radial direction of the body 20, both in the shape of “L”, the conductive sheet 710 is inserted into the bracket 820, and the fixing piece 730 is fixed to the bracket 820, so that the accuracy of the fixing position of the fixing piece 730 can be improved by the insertion fit, thereby improving the accuracy of the installation position of the conductive sheet 710.

[0111] Referring to Figures 4 to 7 In some embodiments, the conductive sheet 710 comprises a contact portion 711 connected to the fixing piece 730, and a protruding portion 712 protruding outward from one end of the contact portion 711 away from the fixing piece 730, the contact portion 711 is used for elastically abutting against the spring needle 610. The outer side wall of the bracket 820 is provided with a recessed accommodating groove 822, and the groove bottom wall of the accessory mounting groove 821 is recessed to form a limiting groove 823 in communication with one end of the accommodating groove 822, and the bracket 820 is further provided with a insertion groove 824 located inside the limiting groove 823 and in communication therewith. The wire connecting segment 720 and the fixing piece 730 are accommodated in the accommodating groove 822, the contact portion 711 is located in the limiting groove 823, and the protruding portion 712 is inserted into the insertion groove 824.

[0112] In the perspective of the drawings, the limiting groove 823 and the insertion groove 824 extend along the radial direction of the body 20, the top end of the accommodating groove 822 and the outside of the limiting groove 823 are in communication, the outside of the insertion groove 824 and the inside of the limiting groove 823 are in communication, and the width of the protruding part 712 is less than the width of the contact part 711. By placing the contact part 711 in the limiting groove 823 and inserting the protruding part 712 into the insertion groove 824, the freedom of the conductive sheet 710 in all directions can be well limited, and the stability of the installation position can be ensured.

[0113] In some embodiments, the fixing sheet 730 is fixed in the accommodating groove 822 by a threaded fastener. Preferably, the surface of the threaded fastener is coated with an insulating layer.

[0114] Specifically, the threaded fastener is a screw. The fixing sheet 730 is provided with a through hole for the screw to pass through, and the groove wall of the accommodating groove 822 is provided with a screw hole at a corresponding position. The screw is threadedly connected to the screw hole after passing through the through hole. Since the screw is usually a metal part, in order to inhibit the contact between the screw and the metal fixing sheet 730 and accelerate the current corrosion of the fixing sheet 730, the screw can be specially treated, for example, the surface of the screw is coated with an insulating layer.

[0115] In some embodiments, the width of the limiting groove 823 is less than 5 mm; and / or, the depth of the accessory mounting groove 821 is greater than 5 mm.

[0116] By limiting the depth of the accessory mounting groove 821 and the width of the limiting groove 823, the contact part 711 of the conductive sheet 710 can be placed in a narrower and deeper position, further reducing the probability of accidental touch by the user.

[0117] Referring to Figures 3 to 5 In some embodiments, the body 20 includes a heating wire 834, a bracket 820, and a hollow protective cover 835. The protective cover 835, the motor 833, and the control panel 832 are all installed in the bracket 820, the heating wire 834 is located on the side of the motor 833 away from the air inlet 811, the protective cover 835 is located on the side of the heating wire 834 away from the motor 833, and the annular accessory mounting groove 821 is formed between the outer wall of the protective cover 835 and the inner wall of the bracket 820.

[0118] In the view of the drawings, the air inlet 811, the control panel 832, the motor 833, the heating wire 834 and the protective cover 835 are arranged from bottom to top in sequence, the heating wire 834 is electrically connected with the control panel 832, and the control panel 832 can control the heating wire 834 to heat the airflow. The protective cover 835 can isolate and protect the heating wire 834, so as to prevent the user's hand from being scalded by contacting the heating wire 834, and can also block foreign matters from the outside, so that they are not easy to enter the heating wire 834 and cause failure. Since the protective cover 835 is in a hollow shape, it will not hinder the outflow of the airflow, and the hollow of the end of the protective cover 835 forms the air outlet of the machine body 20. The airflow can flow into through the air inlet 811, and then flow through the control panel 832, the motor 833, the heating wire 834 and the protective cover 835 before flowing into the air nozzle 10.

[0119] Meanwhile, referring to Figure 1 The power line 831 is also connected to the bottom end of the support 820, one end of the power line 831 is electrically connected with the control panel 832, and the other end is used to be electrically connected with the external power supply. According to the above arrangement, the control panel 832 and the heating wire 834 are separated by the motor 833, and the distance is far, so that the high temperature at the heating wire 834 can be avoided to affect the working performance of the control panel 832.

[0120] In other embodiments, the power line 831 can also be removed, and a battery can be provided for power supply. Alternatively, the power line 831 and the battery can coexist, and the power supply can be directly supplied through the power line 831, or the battery can be charged.

[0121] Preferably, a filter screen is arranged between the air inlet 811 and the control panel 832 to filter the flowing airflow and prevent dust from polluting the electrical components.

[0122] Referring to Figure 4 , and Figures 8 to 10 In some embodiments, the air nozzle 10 includes a connector piece 400, the end of the connector piece 400 is annular and inserted into the accessory mounting groove 821, and the spring needle 610 is exposed outside the connector piece 400, and the airflow in the machine body 20 flows into the air nozzle 10 through the connector piece 400.

[0123] In some embodiments, the connector piece 400 includes a connector side plate 410 and a connector end plate 420 connected to the end of the connector side plate 410 away from the machine body 20, and the end of the connector side plate 410 away from the connector end plate 420 is inserted into the accessory mounting groove 821 for the airflow in the machine body 20 to flow in.

[0124] Specifically, the elastic pin 610 is exposed outside the joint side plate 410, and when installed, the end of the joint side plate 410 away from the joint end plate 420 is inserted into the accessory mounting groove 821, and at the same time, the elastic pin 610 exposed outside the joint side plate 410 and the conductive sheet 710 in the accessory mounting groove 821 are in contact and conduction. In this way, not only can the electrical connection between the tuyere 10 and the machine body 20 be achieved, but also the joint side plate 410 and the groove wall of the accessory mounting groove 821 can have good sealing performance, and the airflow in the machine body 20 is not easy to lose when flowing into the tuyere 10.

[0125] Meanwhile, referring to Figure 21 Further, the joint side plate 410 is generally annular, and a through flow hole 411 is arranged thereon. After the airflow in the machine body 20 flows out through the protective cover 835, it flows into the inside of the joint side plate 410, and after colliding with the joint end plate 420, it turns and flows from the inside to the outside through the flow hole 411 to the outside of the joint side plate 410, and then continues to flow through other components in the tuyere 10. The specific flow path is described in the subsequent part.

[0126] Referring to Figures 8 to 10 In some embodiments, the joint piece 400 includes a guard plate 430 which is outwardly convex relative to the joint side plate 410, and the guard plate 430 is located outside the elastic pin 610.

[0127] Specifically, the guard plate 430 and the joint side plate 410 are integrally formed as a whole, and are formed by the outward convexity of a part of the joint side plate 410. In this way, the strength of the guard plate 430 can be increased. By arranging the guard plate 430, the elastic pin 610 can be protected during the separate taking and placing of the tuyere 10, so that it is not easy to be damaged. In addition, the guard plate 430 is outwardly convex relative to the joint side plate 410, which can prevent mistakes during the installation of the tuyere 10, and facilitate the installation.

[0128] Referring to Figures 8 to 11 In some embodiments, the guard plate 430 and the joint side plate 410 are connected through a boss 440 which is convex on the end of the joint side plate 410, and the boss 440 has a guide wall 441 for cooperating with the guide slope 8211 on the groove bottom wall of the accessory mounting groove 821.

[0129] When the joint piece 400 is inserted into the accessory mounting groove 821, the inclined guide arm can be in contact and cooperation with the guide slope 8211 to guide the elastic pin 610 to accurately reach the contact position of the contact part 711 of the conductive sheet 710 and contact it.

[0130] Referring to Figures 12 to 13In some embodiments, the needle 610 comprises a needle body 611, a needle base 612, an elastic element 613 and a contact ball 614, the elastic element 613 and the contact ball 614 are both arranged in the needle base 612, the needle body 611 extends into the needle base 612 partially and extends out of the needle base 612 partially, the contact ball 614 is located between the needle body 611 and the elastic element 613, and the elastic element 613 is configured to apply an elastic force to the needle body 611 through the contact ball 614 towards the conductive sheet 710.

[0131] Specifically, the elastic element 613 is in a compressed state and has a tendency to stretch and rebound, and the rebound force of the elastic element 613 is transmitted to the needle body 611 through the contact ball 614, so that the needle body 611 has a tendency to extend out of the needle base 612, thereby enabling the needle body 611 to always elastically abut against the conductive sheet 710.

[0132] Referring to Figure 8 , Figure 12 and Figure 13 In some embodiments, the air nozzle 10 comprises a functional assembly 500 for performing a specific function, the needle base 612 and the functional assembly 500 are electrically connected, the needle body 611 and the needle base 612 are gap-fitted and electrically connected, and the end face of the needle body 611 close to the contact ball 614 is beveled.

[0133] Specifically, the functional assembly 500 can be an essential oil atomization assembly, a negative ion assembly, or other common assemblies with specific functions. Referring to Figure 2 , Figure 3 and Figure 7 As described above, the control panel 832 and the conductive sheet 710 are electrically connected, the conductive sheet 710 and the needle body 611 are electrically connected, the needle body 611 and the needle base 612 are electrically connected, and the needle base 612 and the functional assembly 500 are electrically connected, so that the control panel 832 can control the functional assembly 500 to work and perform the corresponding function.

[0134] Since the needle body 611 and the needle base 612 are gap-fitted, and the bottom end of the needle body 611 is beveled, when the needle body 611 and the conductive sheet 710 are in contact and are pressed by the conductive sheet 710 to retract into the needle base 612, the beveled shape of the bottom end of the needle body 611 will cause the force direction to deflect, thereby tilting relative to the needle base 612, so that the outer side wall of the needle body 611 and the inner side wall of the needle base 612 are directly in contact to achieve electrical connection. Compared with the mode of sequentially conducting through the contact ball 614 and the elastic element 613 between the needle body 611 and the needle base 612, the above-mentioned embodiments can reduce the resistance and the circuit loss is smaller.

[0135] Preferably, the needle body 611 and the needle base 612 are made of copper, copper-plated metal or metal containing copper to improve the electrical conductivity of the two.

[0136] Referring to Figure 4 ,Figure 14 With Figure 15 In some embodiments, the tuyere 10 has an open-ended clamping groove 412, and the body 20 has a clamping block 825, which can enter the clamping groove 412 when the body 20 and the tuyere 10 are in position. When the body 20 and the tuyere 10 are in position, they can be simultaneously rotated and moved axially towards each other, and the clamping block 825 can be clamped into the clamping groove 412.

[0137] When the body 20 and the tuyere 10 are in position, the clamping block 825 enters the clamping groove 412. Then, the body 20 and the tuyere 10 can be rotated and moved relative to each other, so that the clamping block 825 can slide into the deep part of the clamping groove 412, thereby achieving the clamping of the body 20 and the tuyere 10. Conversely, the body 20 and the tuyere 10 can be rotated and moved relative to each other in the opposite direction, so that the clamping block 825 can exit the clamping groove 412, thereby achieving the separation of the body 20 and the tuyere 10.

[0138] Specifically, the clamping block 825 protrudes from the inner side wall of the accessory mounting groove 821, and the clamping groove 412 is arranged on the outer side wall of the joint side plate 410 of the joint member 400. The end of the clamping groove 412 away from the joint end plate 420 is open, forming an entrance for the clamping block 825 to enter. When the joint member 400 is inserted into the accessory mounting groove 821 and in position, the clamping block 825 is located at the entrance of the clamping groove 412.

[0139] Referring to Figure 4 , Figure 14 With Figure 15 In some embodiments, the body 20 includes a locking member 841 and a locking elastic member 842 connected to each other. When the clamping block 825 is clamped into the clamping groove 412, the locking elastic member 842 is used to apply an elastic force to the locking member 841 towards the tuyere 10, so that the locking member 841 is inserted into the clamping groove 412, thereby preventing the clamping block 825 from exiting the clamping groove 412.

[0140] Through the cooperation of the locking member 841 and the locking elastic member 842, the position of the tuyere 10 and the body 20 can be locked after the clamping block 825 is clamped into the clamping groove 412, so that the tuyere 10 and the body 20 cannot be rotated and moved relative to each other in the opposite direction, thereby preventing the tuyere 10 from being separated from the body 20.

[0141] Referring to Figure 4 , Figure 14 With Figure 15In some embodiments, the locking member 841 comprises a locking portion 8411, a transmission portion 8412, and a push button 8413, the locking portion 8411 and the push button 8413 are both fixed to the transmission portion 8412, and the locking portion 8411 and the locking elastic member 842 are respectively located at both ends of the transmission portion 8412, the locking elastic member 842 is used to push the locking portion 8411 to be close to the air nozzle 10 through the transmission portion 8412, and the push button 8413 is configured to be operable to push the locking portion 8411 to be away from the air nozzle 10 through the transmission portion 8412.

[0142] Specifically, the locking elastic member 842 is in a compressed state, one end of which abuts against the bracket 820, and the other end of which abuts against the transmission portion 8412. The transmission portion 8412 is slidingly connected to the bracket 820, and the push button 8413 is exposed outside the machine body shell 810 for a user to push. The locking elastic member 842 can push the transmission portion 8412 through the elastic force of stretching and rebounding, and in turn push the locking portion 8411 to be close to the air nozzle 10, so that the locking portion 8411 is inserted into the entrance of the clamping groove 412 to inhibit the clamping block 825 from exiting the clamping groove 412. A user can push the push button 8413 to push the transmission portion 8412, and in turn push the locking portion 8411 to exit the clamping groove 412, so as to release the position locking of the air nozzle 10 and the machine body 20, and realize the disassembly and replacement of the air nozzle 10.

[0143] In other embodiments, the push button 8413 can be replaced by a button, and a conversion structure capable of converting the movement form can be arranged between the button and the transmission portion 8412, so as to convert the pressing of the button into the movement of the transmission portion 8412.

[0144] Referring to Figure 1 In some embodiments, the machine body shell 810 is further provided with a switch key 851, a speed adjustment key 852, and a cold air switching key 853, and the push button 8413 is located on the side of the three keys away from the air inlet 811. Between the three keys and the air inlet 811 is an area for a user to hold hands, so that the push button 8413 is closer to the air outlet end of the machine body 20, i.e. closer to the air nozzle 10, compared with the three keys, so that the transmission portion 8412 can be arranged as short as possible. At the same time, the push button 8413 is located on the opposite side of the three keys, so as to avoid the push button 8413 from being mistakenly touched when the three keys are operated, which causes the unstable connection between the machine body 20 and the air nozzle 10.

[0145] Referring to Figure 8 , Figure 12 With Figure 16 In some embodiments, the air nozzle 10 comprises a functional assembly 500 for playing a specific function, the first electric connecting member 600 comprises a contact sheet 640 electrically connected to the elastic needle 610, the functional assembly 500 comprises a circuit board 540 and a plug needle 580, one end of the plug needle 580 is electrically connected to the circuit board 540, and the other end of the plug needle 580 is electrically connected to the contact sheet 640.

[0146] Specifically, the needle seat 612 of the spring needle 610 is electrically connected with the contact sheet 640. Further, the first electrical connector 600 comprises the substrate 620 and the wire 630, the needle seat 612 and the substrate 620 are welded to achieve electrical connection, and the substrate 620 and the contact sheet 640 are electrically connected through the wire 630.

[0147] Referring to Figure 8 , Figure 12 , Figure 16 and Figure 20 , in some embodiments, the air nozzle 10 comprises the air outlet sleeve 300, the functional assembly 500 is installed in the air outlet sleeve 300, the contact sheet 640 comprises the fixed part 641 and the connecting part 642 which are connected with each other and are oppositely bent, the connecting part 642 is inserted into the air outlet sleeve 300, and the fixed part 641 is fixed to the air outlet sleeve 300. The end of the spring needle 580 away from the circuit board 540 elastically abuts against the connecting part 642.

[0148] Specifically, in the contact sheet 640, the fixed part 641 extends along the axial direction of the air nozzle 10, and the connecting part 642 extends along the radial direction of the air nozzle 10, and both are in the shape of “L”. The connecting part 642 is inserted into the air outlet sleeve 300, and the fixed part 641 is fixed to the air outlet sleeve 300, so that the accuracy of the fixed position of the fixed part 641 can be improved by the insertion fit, thereby improving the accuracy of the installation position of the contact sheet 640.

[0149] In some embodiments, the fixed part 641 is fixed to the air outlet sleeve 300 by a threaded fastener.

[0150] Referring to Figure 12 , Figure 16 and Figure 17 , in some embodiments, the functional assembly 500 has a spring needle cavity 511 for accommodating the spring needle 580, the air outlet sleeve 300 is provided with a contact sheet insertion slot 311 and a spring needle hole 312, the spring needle hole 312 is communicated with the contact sheet insertion slot 311 and the spring needle cavity 511, the connecting part 642 is inserted into the contact sheet insertion slot 311, and the spring needle 580 passes through the spring needle hole 312 and elastically abuts against the connecting part 642.

[0151] In some embodiments, the specific structure of the spring needle 580 is similar to that of the spring needle 610 in the foregoing embodiments, which will not be described here again.

[0152] Referring to Figure 8 , Figure 17 , Figures 19 to 21 , and Figure 23In some embodiments, the tuyere 10 comprises a housing assembly, an air outlet sleeve 300, a functional assembly 500 and a mounting structure. The air outlet sleeve 300 is connected to the housing assembly, and the air outlet sleeve 300 is hollow inside, and the housing assembly and the inner side of the air outlet sleeve 300 jointly form a mounting cavity 101. The mounting structure comprises a fixing piece 330 and a fixing groove 571, one of which is arranged on the functional assembly 500, and the other is arranged in the mounting cavity 101. The functional assembly 500 is configured to enter the mounting cavity 101 along the air outlet sleeve 300 (i.e. the axial direction of the tuyere 10), so that the fixing piece 330 elastically retracts radially along the air outlet sleeve 300 until the fixing piece 330 is clamped into the fixing groove 571.

[0153] The above-mentioned tuyere 10, the housing assembly and the inner side of the air outlet sleeve 300 jointly form a mounting cavity 101, which provides space for the installation of the functional assembly 500. One of the fixing piece 330 and the fixing groove 571 is arranged on the functional assembly 500, and the other is arranged in the mounting cavity 101. When the functional assembly 500 enters the mounting cavity 101 along the air outlet sleeve 300, the fixing piece 330 will be pressed, thereby elastically retracting radially along the air outlet sleeve 300 until the fixing piece 330 reaches the position of the fixing groove 571. Since the fixing groove 571 provides space for the fixing piece 330, the fixing piece 330 can elastically extend and be clamped into the fixing groove 571, thereby completing the installation of the functional assembly 500. Conversely, when the functional assembly 500 needs to be disassembled, it only needs to be axially withdrawn from the mounting cavity 101 along the air outlet sleeve 300, so that the fixing piece 330 is again pressed and elastically retracted out of the fixing groove 571, until the functional assembly 500 is disengaged from the mounting cavity 101. As can be seen, when the functional assembly 500 is disassembled, it only needs to be moved axially along the air outlet sleeve 300, and the disassembly operation is relatively simple. In addition, after the functional assembly 500 is installed, the fixing piece 330 is elastically clamped into the fixing groove 571, and the fixing groove 571 can limit the position of the fixing piece 330 so that it cannot be easily displaced and disengaged. A sufficient external force must be applied to elastically retract the fixing piece 330 and exit the fixing groove 571 in order to disassemble it. Therefore, after the functional assembly 500 is installed, it has high installation reliability and will not easily fall off.

[0154] The tuyere 10 in the above-mentioned embodiments can be detachably connected to the machine body 20 as in the above-mentioned embodiments, or can also be integrally connected with the machine body 20, and the same applies to the following embodiments.

[0155] Referring to Figure 17 , Figure 19 and Figure 23In some embodiments, the mounting structure comprises a mounting elastic member 340, the outer sidewall of the functional assembly 500 is provided with an internally recessed fixing groove 571, the air outlet sleeve 300 is provided with a mounting hole 313 communicating with the mounting cavity 101, one end of the mounting elastic member 340 abuts against the air outlet sleeve 300, and the other end abuts against the fixing member 330, so that the fixing member 330 extends into the mounting cavity 101 through the mounting hole 313.

[0156] Specifically, the mounting elastic member 340 is in a compressed state, and the tensile elastic force of the mounting elastic member 340 pushes the fixing member 330 into the mounting cavity 101 through the mounting hole 313 and protrudes from the cavity wall of the mounting cavity 101. When the functional assembly 500 enters the mounting cavity 101, the outer sidewall of the functional assembly 500 will extrude the fixing member 330, so that the fixing member 330 exits the mounting cavity 101 and retreats into the mounting hole 313. When the functional assembly 500 moves to a position where the fixing member 330 and the fixing groove 571 are aligned, the mounting elastic member 340 elastically rebounds and pushes the fixing member 330 into the mounting cavity 101 through the mounting hole 313 and is clamped into the fixing groove 571. During the mounting process, when the fixing member 330 jumps over the edge of the fixing groove 571 and is clamped into the fixing groove 571, the collision of the plastic members will make a sound to remind the user that the installation is in place.

[0157] In other embodiments, the positions of the fixing member 330 and the fixing groove 571 can also be interchanged, that is, the fixing groove 571 is arranged on the cavity wall of the mounting cavity 101, and the fixing member 330 is arranged on the functional assembly 500. Correspondingly, the mounting elastic member 340 is also arranged on the functional assembly 500.

[0158] In other embodiments, the mounting elastic member 340 can also be omitted, and the fixing member 330 is directly arranged as a component capable of stretching and retracting, which can be clamped into or exited from the fixing groove 571 by the stretching and retracting of the fixing member 330 itself.

[0159] Referring to Figure 17 and Figure 19 In some embodiments, the end of the fixing member 330 away from the mounting elastic member 340 is tapered, and the end of the fixing member 330 away from the mounting elastic member 340 has the smallest size.

[0160] In this way, the part of the fixing member 330 extending into the mounting cavity 101 is tapered, thereby reducing the difficulty of clamping into and exiting from the fixing groove 571, and the user can disassemble more easily.

[0161] Referring to Figure 17 , Figure 19 and Figure 20 In some embodiments, the end of the fixing member 330 away from the mounting elastic member 340 is sealingly connected with the groove wall of the fixing groove 571.

[0162] Specifically, the taper surface of the fixing member 330 and the groove wall of the fixing groove 571 are completely fitted to achieve a sealed connection so as to prevent air flow from leaking through, and ensure that air flow can flow into the functional assembly 500.

[0163] Referring to Figures 17 to 19 In some embodiments, the air outlet sleeve 300 comprises a sleeve body 310 and a fixing seat 320, the mounting hole 313 is radially through the sleeve body 310, and the fixing seat 320 is fixed to the outside of the sleeve body 310 to block the mounting hole 313. One end of the mounting elastic member 340 abuts against the fixing seat 320, and the other end abuts against the fixing member 330.

[0164] Specifically, the fixing seat 320 can be fixed to the outside of the sleeve body 310 by clamping, or can be fixed by a threaded fastener, or the fixing seat 320 can be integrally formed with the sleeve body 310.

[0165] Referring to Figure 17 , Figure 19 With Figure 23 In some embodiments, the fixing groove 571 is annular, and multiple sets of the mounting elastic member 340 and the fixing member 330 are arranged in a circumferential direction of the air outlet sleeve 300.

[0166] Preferably, multiple sets of the mounting elastic member 340 and the fixing member 330 are arranged uniformly in the circumferential direction of the air outlet sleeve 300 to increase the stability of installation. For example, the mounting elastic member 340 and the fixing member 330 are provided with three sets, and each set is spaced by 120 degrees. Referring to Figure 20 , Figure 21 , Figure 23 With Figure 24 In some embodiments, the mounting cavity 101 comprises a first space 1011 and a second space 1012 arranged in an axial direction of the air outlet sleeve 300 and communicated, the radial dimension of the first space 1011 is greater than that of the second space 1012 to form a step surface 315 therebetween, the functional assembly 500 comprises a first part 501 and a second part 502, the radial dimension of the first part 501 is greater than that of the second part 502, and the functional assembly 500 is configured to enter the mounting cavity 101 in the axial direction of the air outlet sleeve 300 so that the second part 502 extends into the second space 1012 and the first part 501 extends into the first space 1011, until the end surface of the first part 501 abuts against the step surface 315, and the fixing member 330 is clamped into the fixing groove 571.

[0167] By setting the first space 1011 and the second space 1012 with different radial dimensions, and the first part 501 and the second part 502 with different radial dimensions, the functional assembly 500 can only be accessed from the side of the first space 1011, and the second part 502 must be entered first to be successfully installed, so as to prevent mistakes during installation and achieve quick and accurate installation. In addition, the stepped surface 315 between the first space 1011 and the second space 1012 can abut against the end surface of the first part 501 during installation to remind the user that the current installation is in place.

[0168] Referring to Figures 20 to 22 In some embodiments, the shell assembly includes the accessory shell 100 and the rear cover 200 connected together, the air outlet sleeve 300 and the rear cover 200 extend into the accessory shell 100, and the two are arranged axially along the air outlet sleeve 300, one end of the air outlet sleeve 300 is connected to the accessory shell 100, and the other end is connected to the rear cover 200, a part of the air outlet sleeve 300 and the inside of the rear cover 200 together enclose the second space 1012, and the inside of a part of the air outlet sleeve 300 encloses the first space 1011.

[0169] Specifically, the accessory shell 100 and the rear cover 200 are clamped and fixed, or connected and fixed by threaded fasteners. The interior of the rear cover 200 is hollow, and the inner diameter is consistent with the inner diameter of the part of the air outlet sleeve 300 close to the rear cover 200, so as to enclose the second space 1012. The inner diameter of the part of the air outlet sleeve 300 away from the rear cover 200 is larger, so as to enclose the first space 1011. The functional assembly 500 is disassembled and assembled from the end of the air outlet sleeve 300 away from the rear cover 200.

[0170] Referring to Figures 19 to 21 In some embodiments, the air outlet sleeve 300 includes the open section 316 and the straight section 317 arranged axially along itself, the open section 316 and the straight section 317 enclose the first space 1011, the open section 316 is located at the end of the straight section 317 away from the second space 1012, and the open section 316 is in the shape of a gradually expanding trumpet mouth in the direction of the air outlet sleeve 300 axially and away from the second space 1012.

[0171] Specifically, the functional assembly 500 enters the first space 1011 from the open section 316 during installation, and the aforementioned fixing member 330 is installed on the straight section 317. In the above embodiment, the trumpet mouth design of the open section 316 can facilitate the installation of the functional assembly 500.

[0172] Referring to Figure 20 With Figure 21In some embodiments, the rear cover 200 comprises a rear cover end plate 210 and a rear cover side plate 220 protruding from one end of the rear cover end plate 210, the rear cover end plate 210 is clamped to the accessory shell 100, one end of the air outlet sleeve 300 abuts against the rear cover side plate 220, and the other end abuts against the accessory shell 100, and the air outlet sleeve 300 and the rear cover side plate 220 together define the second space 1012.

[0173] Specifically, the rear cover side plate 220 protrudes from the central region of the rear cover end plate 210, and the rear cover end plate 210 is provided with a hollow hole 211 corresponding to the position of the second space 1012, so that the user can push the functional assembly 500 from the hollow hole 211 to exit the mounting cavity 101 to complete the disassembly. The clamping structure between the rear cover end plate 210 and the accessory shell 100 can be any one of the prior art, which will not be described here. In addition, the air outlet sleeve 300 can also be clamped to the accessory shell 100 on the basis of abutting against the accessory shell 100 and the rear cover 200 to enhance the installation firmness. At this time, the structure for clamping the rear cover 200 and the structure for clamping the air outlet sleeve 300 on the accessory shell 100 are arranged in a circumferential direction to avoid interference.

[0174] Referring to Figure 18 , Figure 20 and Figure 21 In some embodiments, the air outlet sleeve 300, the rear cover 200 and the accessory shell 100 form an annular outer air duct 102, the air outlet sleeve 300 has an airflow hole 351 communicating with the first space 1011 and the outer air duct 102, and the airflow entering the outer air duct 102 from the machine body 20 can enter the first space 1011 through the airflow hole 351 and then be discharged after flowing through the functional assembly 500.

[0175] Specifically, the outer air duct 102 is formed between the outer side wall of the air outlet sleeve 300, the outer side wall of the rear cover side plate 220, the inner end wall of the rear cover end plate 210, and the inner side wall of the accessory shell 100. The airflow entering the outer air duct 102 can flow from the outside to the inside through the airflow hole 351, reach the first space 1011, and then be discharged after flowing through the functional assembly 500 to blow to the hair to be dried. By providing the airflow hole 351, the annular airflow in the outer air duct 102 can be diverted through the airflow hole 351, changing from flowing around the circumference of the air outlet sleeve 300 to flowing radially inward, so as to better blow to the functional assembly 500. In addition, by forming the annular outer air duct 102 between the second shell part 120 and the sleeve body 310, the airflow can be compressed to be more concentrated to reach the first space 1011 through the airflow hole 351, while the noise can be reduced.

[0176] The air flow passes through the functional assembly 500 before being discharged, and thus, the discharged air flow can have different functions according to the different functional assembly 500. For example, if the functional assembly 500 is an essential oil atomization assembly, the discharged air flow carries atomized essential oil molecules, which can make the hair more moisturized and emit fragrance. If the functional assembly 500 is a negative ion assembly, the discharged air flow carries negative ions, which is beneficial to keep the hair shiny and moist.

[0177] In some embodiments, the outer side wall of the air outlet sleeve 300 is provided with a flow passage 350 extending outward and abutting the inner side wall of the accessory shell 100. The flow passage 350 is hollow inside to form the aforementioned air flow hole 351. The flow passage 350 is formed with a notch 352 communicating with the air flow hole 351 near the upstream area of the outer air duct 102, so as to facilitate the turning and rapid flow of the air flow in the outer air duct 102 into the air flow hole 351.

[0178] In some embodiments, the air outlet sleeve 300 is provided with a plurality of groups of flow passages 350 arranged at intervals along the circumferential direction of the air outlet sleeve 300.

[0179] Referring to Figures 19 to 21 In some embodiments, the opening section 316 and the functional assembly 500 are in clearance fit, and an annular space is formed therebetween.

[0180] In this way, after the air flow entering the outer air duct 102 flows through the air flow hole 351 to the first space 1011, most of the air flow can flow through the functional assembly 500 and be discharged, and a small part of the air flow can also flow out from the annular space between the opening section 316 and the functional assembly 500, forming annular wind. The annular wind and the wind flowing out of the functional assembly 500 blow towards the hair together, increasing the air outlet volume, and the point-like air flows at several air flow holes 351 can be connected to form more smooth annular wind, providing a better user experience.

[0181] In addition, as described above, the end of the fixing member 330 away from the elastic member 340 is sealingly connected to the groove wall of the fixing groove 571. Therefore, the air flow flowing into the first space 1011 can be prevented from leaking from the connection between the fixing member 330 and the fixing groove 571, ensuring that all the air flow can flow into the functional assembly 500.

[0182] Referring to Figures 20 to 22 In some embodiments, the air outlet nozzle 10 comprises a joint member 400 for connecting with the machine body 20. The joint member 400 is connected to the accessory shell 100, and the air flow in the machine body 20 flows into the outer air duct 102 through the joint member 400.

[0183] Specifically, the accessory shell 100 comprises a first shell portion 110 and a second shell portion 120 which are integrally formed. The first shell portion 110 is connected with the joint member 400, and the second shell portion 120 is in a hollow cylindrical shape. The air outlet sleeve 300, the rear cover 200 and the functional assembly 500 are all located in the second shell portion 120. The air flows from the first shell portion 110 into the second shell portion 120. The connection structure between the joint member 400 and the body 20 has been described in the foregoing embodiments, and will not be described here again.

[0184] Referring to Figure 9 , Figure 21 and Figure 22 , in some embodiments, the joint member 400 comprises a joint end plate 420 connected with the accessory shell 100, and a joint side plate 410 connected with the joint end plate 420 at an end thereof away from the accessory shell 100. The joint side plate 410 is used to connect with the body 20, and the joint side plate 410 is provided with a flow-through hole 411 which is in communication with the inside space of the joint side plate 410 and the outer air duct 102. The air flow discharged from the body 20 can flow into the inside of the joint side plate 410 and then flow into the outer air duct 102 through the flow-through hole 411.

[0185] Specifically, the joint end plate 420 and the first shell portion 110 of the accessory shell 100 are connected through threaded fasteners. The joint side plate 410 is generally annular and is provided with a flow-through hole 411 which penetrates through the joint side plate 410. After the air flow in the body 20 is discharged, it flows into the inside of the joint side plate 410 and is turned after colliding with the joint end plate 420. The air flow then passes through the flow-through hole 411 from the inside to the outside, reaches the outer air duct 102 outside the joint side plate 410, forms a circular air flow in the outer air duct 102, and then flows through the air flow hole 351 from the outside to the inside, reaches the first space 1011, and is discharged after flowing through the functional assembly 500, and blows to the hair to be dried. By providing the joint end plate 420, the air flow can be collided and turned, which is conducive to the turning of the air flow and better adaptation to the circular flow direction in the outer air duct 102. In addition, the joint end plate 420 can also shield other structures in the second shell portion 120 to prevent dust from entering and prevent the user from being accidentally touched, and the appearance is also more beautiful.

[0186] Preferably, the joint side plate 410 is arranged to be inclined relative to the axial direction of the body 20. In this way, the flow path of the air flow can be lengthened, and the air flow is more easily turned.

[0187] Referring to Figure 9 , Figure 10 , Figure 12 , Figure 16 and Figure 21In some embodiments, the nozzle 10 includes a first electrical connector 600, which includes a spring pin 610 and a base plate 620. The base plate 620 is electrically connected to the functional component 500. A portion of the connector side plate 410 is recessed. The base plate 620 is accommodated between the recessed area 413 of the connector side plate 410 and the accessory housing 100. The spring pin 610 passes through the connector 400 and is used for electrical connection with the body 20.

[0188] By recessing a portion of the connector side plate 410, the substrate 620 can be avoided, providing more space for its installation. Additionally, as previously described, the first electrical connector 600 includes the substrate 620 and wires 630. The pin seat 612 of the spring pin 610 passes through the connector 400, with its lower end exposed and its upper end extending into the accessory housing 100. The lower end of the pin body 611 of the spring pin 610 is used for electrical connection with the body 20. The upper end of the pin seat 612 is soldered to the substrate 620 to achieve electrical connection. The substrate 620 and the contact piece 640 are electrically connected via wires 630, and the contact piece 640 and the circuit board 540 of the functional component 500 are electrically connected via pins 580. More specific electrical connection structures can be found in the aforementioned embodiments and will not be repeated here.

[0189] See Figure 9 and Figure 21 Preferably, the flow hole 411 is located on the opposite side of the concave region 413. This provides more space for the flow hole 411.

[0190] See Figure 1 , Figure 9 and Figure 21 Preferably, the sidewall of the concave region 413 is inclined relative to the axis of the body 20, and the size of the concave region 413 gradually increases radially away from the body 20 in the direction gradually moving away from the body 20. That is, in Figure 21 From the shown perspective, the sidewall of the concave region 413 is sloping, with the left side higher than the right, and the concave region 413 gradually increases in size from left to right. This arrangement facilitates the installation of components such as the substrate 620 and the wire 630 in the concave region 413, and also guides the airflow flowing into the inner side of the connector side plate 410 towards the flow hole 411 on the opposite side, making it easier for the airflow to flow into the external air duct 102 through the flow hole 411.

[0191] See Figure 9 , Figure 16 , Figure 20 and Figure 21 Preferably, the first electrical connector 600 and the pin 580 are both located at one end of the nozzle 10 along its own radial direction, and the flow hole 411 is located at the other end of the nozzle 10 along its own radial direction.

[0192] Specifically, the first electrical connector 600 and the pin 580 are located at the front of the air nozzle 10, and the flow-through hole 411 is located at the rear of the air nozzle 10 (the front and the rear are located on two sides of a plane that passes through the axis of the machine body 20 and is parallel to the end surface of the air nozzle 10). Such an arrangement can save space and shorten the circuit connection path. In addition, the design of the front wire and the rear air flow makes the air flow more smooth. The air flows into the air nozzle 10 from the rear and flows out of the air nozzle 10 from the front. The flow-through hole 411 is located at the rear and is far away from the air outlet position, which can provide a long enough air duct for air deflection.

[0193] Referring to Figure 21 and Figure 22 Preferably, the accessory shell 100 is provided with a support frame 111 for supporting the base plate 620, so that the position of the base plate 620 is more stable. Specifically, the support frame 111 is arranged in the first shell part 110.

[0194] Referring to Figure 17 and Figure 22 In some embodiments, one of the outer side wall of the air outlet sleeve 300 and the inner side wall of the accessory shell 100 is provided with a guide rib 121 extending in the axial direction of the air outlet sleeve 300, and the other is provided with a first guide groove 321 extending in the axial direction of the air outlet sleeve 300. When the air outlet sleeve 300 is installed into the accessory shell 100, the guide rib 121 slides along the first guide groove 321.

[0195] Specifically, the first guide groove 321 is recessed in the outer side wall of the air outlet sleeve 300, and the guide rib 121 is protruded from the inner side wall of the accessory shell 100. More specifically, the first guide groove 321 is arranged on the outer side wall of the fixed seat 320, and the guide rib 121 is arranged on the inner side wall of the second shell part 120. By arranging the first guide groove 321 and the guide rib 121 that cooperate with each other, the air outlet sleeve 300 can be guided and limited when it is installed into the accessory shell 100, so as to ensure the axial alignment accuracy of the air outlet sleeve 300 and the accessory shell 100. In other embodiments, the positions of the first guide groove 321 and the guide rib 121 can be interchanged.

[0196] Referring to Figure 17 and Figure 23 In some embodiments, one of the inner side wall of the air outlet sleeve 300 and the outer side wall of the functional assembly 500 is provided with a second guide groove 314 extending in the axial direction of the air outlet sleeve 300, and the other is provided with a guide plate 512 extending in the axial direction of the air outlet sleeve 300. When the functional assembly 500 is axially inserted into the installation cavity 101 of the air outlet sleeve 300, the guide plate 512 is inserted into the second guide groove 314.

[0197] Specifically, the second guide groove 314 is arranged on the inner side wall of the air outlet sleeve 300, and the guide plate 512 is arranged on the outer side wall of the functional assembly 500. By arranging the second guide groove 314 and the guide plate 512 that cooperate with each other, the functional assembly 500 can be guided and limited when it is installed, so that it can be accurately installed in place. In other embodiments, the positions of the second guide groove 314 and the guide plate 512 can be interchanged.

[0198] Referring to Figure 12 , Figure 16 , Figure 17 and Figure 23 , in some embodiments, the air nozzle 10 includes a first electrical connector 600 for electrical connection with the machine body 20, the functional assembly 500 includes a circuit board 540 and a pin 580, one end of the pin 580 is electrically connected to the circuit board 540, the other end of the pin 580 passes through the air outlet sleeve 300 and is electrically connected to the first electrical connector 600, the guide plate 512 and the second guide groove 314 are provided with two sets of matched guide plates 512, and the pin 580 is located between the two sets of guide plates 512.

[0199] In this way, the guide plate 512 can guide and protect the pin 580 at the same time, so that the pin 580 is not easily damaged. The structure of the pin 580, the structure of the first electrical connector 600, and the connection mode therebetween are described in the foregoing embodiments, and will not be described again here. It only needs to be supplemented that the contact sheet slot 311 mentioned in the foregoing embodiments does not pass through in the radial direction of the air outlet sleeve 300, so as to prevent the airflow in the outer air duct 102 from leaking through it.

[0200] Referring to Figure 21 , Figure 23 and Figure 24 , in some embodiments, the functional assembly 500 is an essential oil atomization assembly, which includes an essential oil bottle 510 for storing essential oil, and a tungsten wire heating element 520, a flow guide rod 530, and a circuit board 540. The tungsten wire heating element 520 is electrically connected to the circuit board 540, the flow guide rod 530 extends into the essential oil bottle 510, the tungsten wire heating element 520 is connected to the flow guide rod 530, and the essential oil in the essential oil bottle 510 can be guided to the tungsten wire heating element 520 through the flow guide rod 530 and atomized by the tungsten wire heating element 520.

[0201] Specifically, the tungsten wire heating element 520 is connected to the top end of the flow guide rod 530. In the tungsten wire heating element 520, the tungsten wire is embedded in the microporous ceramic, and the tungsten wire is electrically connected to the circuit board 540, which can control the power-on operation of the tungsten wire. When the tungsten wire is powered on, it will heat and atomize the essential oil attached to the microporous ceramic, making it into small particles that can be carried by the airflow and blown out. The atomized essential oil is more easily attached to the surface of the hair, and the care effect is better. In addition, it should be noted that the atomization here is not vaporization. By controlling the temperature of the tungsten wire, the essential oil is just atomized and not vaporized. In the prior art, the essential oil is directly volatilized through the opening. As long as the essential oil is opened, it will begin to volatilize and cannot be controlled artificially. In the above embodiment, the tungsten wire can be controlled to be powered on and off by the circuit board 540, so that the atomization of the essential oil can be performed according to the needs, reducing the waste of essential oil.

[0202] In some embodiments, the circuit board 540 is also provided with a lamp bead 541 electrically connected thereto, and a semi-transparent lamp shade 560 is provided on the lamp bead 541. When the lamp bead 541 emits light, the light is diffused and transmitted through the lamp shade 560, which can make the light appear as a uniform and diffuse white light, which is softer, and only a small number of lamp beads 541 are needed to achieve the effect of the light ring.

[0203] The essential oil atomization assembly also includes a diffuser mesh cover 570, an oil absorbing cotton 550, and other components. The diffuser mesh cover 570 is connected to the essential oil bottle 510 and has a grid shape. The aforementioned fixing groove 571 is provided on the outer side wall of the diffuser mesh cover 570. The annular oil absorbing cotton 550 is arranged inside the diffuser mesh cover 570 and is located on the side of the circuit board 540 away from the tungsten wire heating element 520, and is used to absorb essential oil that is not successfully atomized by the tungsten wire heating element 520. The annular lamp shade 560 is arranged inside the diffuser mesh cover 570 and is located on the side of the oil absorbing cotton 550 away from the circuit board 540. The atomized essential oil passes through the inner holes of the annular oil absorbing cotton 550 and the lamp shade 560 in sequence, and the airflow in the first space 1011 passes through the side grids of the diffuser mesh cover 570 from the outside to the inside, reaches between the diffuser mesh cover 570 and the lamp shade 560, wraps the atomized essential oil particles, and blows out through the end grids of the diffuser mesh cover 570. Among them, the essential oil that is not atomized will be absorbed by the inner side wall of the oil absorbing cotton 550 when passing through the inner hole of the oil absorbing cotton 550.

[0204] Preferably, the inner side wall of the lamp shade 560 is arc-shaped to facilitate the flow of atomized essential oil particles out of the lamp shade 560.

[0205] Preferably, the distance between the end face of the lamp shade 560 and the inner end face of the diffuser mesh cover 570 is less than 5 mm, so that the airflow reaching the first space 1011 can flow at high speed between the end face of the lamp shade 560 and the inner end face of the diffuser mesh cover 570, and wrap the atomized essential oil particles to blow out.

[0206] When the essential oil atomization assembly is in the uninstalled state, the hair drying device can be used as a non-specific function hair dryer. Conversely, when the essential oil atomization assembly is in the installed state, the control board 832 in the machine body 20 detects that the circuit board 540 of the essential oil atomization assembly is in the on state, the tungsten wire heating element 520 heats the essential oil to atomize it, the lamp bead 541 emits light, and the heating wire 834 in the machine body 20 does not heat to prevent the temperature from being too high to vaporize the essential oil.

[0207] Referring to Figure 23 With Figure 24 In some embodiments, the bottom wall of the essential oil bottle 510 is inwardly recessed to form a recess 513.

[0208] Specifically, when the essential oil bottle 510 is molded, glue will enter through its bottom wall, so after molding, the bottom wall will have a local outward protrusion. By inwardly recessing the bottom wall, the user can avoid being poked by the local outward protrusion on the bottom wall during disassembly. In addition, the rear cover end plate 210 mentioned above is also inwardly inclined and recessed, which can prevent the user from accidentally touching the bottom wall of the essential oil bottle 510 and pushing the entire assembly out of the installation cavity 101.

[0209] Further, in some embodiments, the inside of the bottom wall of the essential oil bottle 510 is provided with a local protrusion 514 that protrudes towards the flow guide rod 530. During use, the local protrusion 514 can make it easier for the essential oil to contact the flow guide rod 530.

[0210] Referring to Figure 12 , Figure 16 , Figure 23 With Figure 24 In some embodiments, the essential oil atomization assembly includes a storage portion for storing essential oil and a volatilization portion for atomizing essential oil. The volatilization portion constitutes the first portion 501, and the storage portion constitutes the second portion 502. The circuit board 540 and the pin 580 are both arranged in the volatilization portion, and the volatilization portion and the first electrical connector 600 are both located at the same end of the air nozzle 10 along its radial direction.

[0211] Since the circuit board 540 and the pin 580 are both arranged in the volatilization portion, and the volatilization portion and the first electrical connector 600 are both located at the same end of the air nozzle 10 along its radial direction, the circuit connection path is shorter when the pin 580 and the contact piece 640 in the first electrical connector 600 are in contact and conductive. In addition, the storage portion is designed in an elongated shape, which can increase the space for storing essential oil and facilitate the flow guide rod 530 to dip essential oil.

[0212] Referring to Figure 1 , Figure 3 and Figure 25In some embodiments, the hair drying device provided by an embodiment of the present application comprises a body 20 and at least one nozzle 10. The body 20 comprises a control panel 832, a motor 833 and a first circuit module electrically connected to the control panel 832. The body 20 has an air inlet 811 and an air outlet 812. The motor 833 is configured to cause external air to flow into the body 20 through the air inlet 811 and to flow out of the body 20 through the air outlet 812. The nozzle 10 is detachably connected to the body 20 and comprises a second circuit module. The nozzle 10 is configured to receive the air flowing out of the air outlet 812 and to discharge the received air after processing. The first circuit module is capable of forming a path alone, and the first circuit module is capable of forming a path together with the second circuit module. The control panel 832 is capable of detecting the path to determine the installation state and / or type of the nozzle 10.

[0213] In the above embodiment, the motor 833 causes external air to flow into the body 20 through the air inlet 811 and to flow out of the body 20 through the air outlet 812. The air flowing out of the body 20 flows into the nozzle 10 and is discharged after processing, thereby performing corresponding care for the hair. The nozzle 10 is detachably connected to the body 20, so that different types of care for the hair can be performed by replacing the nozzle 10. The first circuit module is capable of forming a path alone, and the first circuit module is capable of forming a path together with the second circuit module. Understandably, when different nozzles 10 are installed on the body 20, the paths formed by the first circuit module and the corresponding second circuit module will also be different. Therefore, only the control panel 832 needs to detect the path to determine the installation state and / or type of the nozzle 10, for example, to determine whether a nozzle 10 is currently installed on the body 20 and the specific type of the installed nozzle 10. In the above identification process, only the first circuit module and the second circuit module need to be set, and the type of the path formed is detected by the control panel 832, so that a complex mechanical docking structure does not need to be set, the requirement for structural design is lower, and the identification result is more reliable because it does not depend on a sensor.

[0214] As described above, the nozzle 10 comprises a functional assembly 500. When the air flows through the nozzle 10, the functional assembly 500 performs corresponding processing on the air. When different nozzles 10 are installed, the functional assemblies 500 therein are different, so that various different processing can be performed on the air. For example, the blown air carries atomized essential oils or negative ions, water ions, etc.

[0215] Referring to Figure 1 , Figure 3 and Figure 25 In some embodiments, the control panel 832 is capable of controlling the hair drying device to switch to a corresponding working mode based on the installation state and type of the nozzle 10.

[0216] Specifically, the hair drying device can be set with corresponding working modes based on the type of the functional assembly 500 in each air nozzle 10. For example, an essential oil mode, a negative ion mode, a water ion mode, etc. Each mode is customized for the characteristics of the corresponding functional assembly 500, with optimal wind speed and wind temperature, etc., so that the functional assembly 500 in the mode can play the best effect and the hair care effect is better. For example, in the essential oil mode, the wind temperature cannot be too high to avoid the essential oil vaporization.

[0217] Referring to Figure 1 , Figure 3 and Figure 25 , further, in some embodiments, the body 20 includes a heating wire 834 electrically connected to the control board 832, and the control board 832 can control the power of the heating wire 834 and the motor 833 based on the installation state and type of the air nozzle 10.

[0218] Specifically, when the air nozzle 10 is not installed or a different air nozzle 10 is installed, the control board 832 can control the power of the motor 833 and the heating wire 834 in the body 20 to switch to the corresponding working mode.

[0219] As mentioned above, each mode is customized for the characteristics of the corresponding functional assembly 500, with optimal wind speed and wind temperature. The wind speed thereof can be achieved by controlling the power of the motor 833, and the wind temperature thereof can be achieved by controlling the power of the heating wire 834. For example, increasing the power of the motor 833 to increase the wind speed; adjusting the heating power of the heating wire 834 to blow cold wind, warm wind or hot wind, or cold and hot alternating wind.

[0220] In a specific embodiment, when the functional assembly 500 in the air nozzle 10 is an essential oil atomization assembly, the power of the heating wire 834 is 0, i.e. the heating wire 834 does not work, so as to avoid the temperature being too high to vaporize the essential oil.

[0221] Referring to Figure 1 , Figure 3 and Figure 25 , in some embodiments, the control board 832 judges the installation state and type of the air nozzle 10 by detecting the voltage of the passage.

[0222] Specifically, when the first circuit module alone forms the passage, and when the first circuit module and a different second circuit module form the passage, the voltage of each passage is different. Therefore, the control board 832 can reversely judge whether the current air nozzle 10 is installed and the specific type of the air nozzle 10 based on the measured passage voltage, so as to control the hair drying device to switch to the corresponding working mode based thereon.

[0223] Referring to Figure 1 , Figure 3 and Figure 25Further, in some embodiments, the second circuit module in each air nozzle 10 has a corresponding resistance, so that the voltage of the passage detected by the control board 832 is different.

[0224] Because the resistance of the second circuit module in each air nozzle 10 is different, the voltage of the passage formed by the first circuit module and the second circuit module will also be different, so that whether the air nozzle 10 is installed and the type of the air nozzle 10 can be determined by detecting the voltage.

[0225] Specifically, a resistance element with a corresponding resistance value can be connected in series in the second circuit module of each air nozzle 10, so that the second circuit module has different resistances.

[0226] Referring to Figure 1 , Figure 3 and Figure 25 , in some embodiments, after the control board 832 determines that the air nozzle 10 is in the installed state, the control board 832 can control the first circuit module to supply power to the electrical element in the air nozzle 10. In this way, it is not necessary to separately provide a power supply component such as a battery in the air nozzle 10.

[0227] Specifically, the electrical element in the air nozzle 10 can be an NTC temperature detector, a negative ion generator, a water ion generator, an essential oil atomizer, etc.

[0228] Referring to Figure 1 , Figure 3 and Figure 25 , in some embodiments, a first NTC temperature detector is connected in the first circuit module, and a second NTC temperature detector is connected in the second circuit module. When the control board 832 determines that the air nozzle 10 is in the non-installed state, the control board 832 reads the detection value of the first NTC temperature detector; when the control board 832 determines that the air nozzle 10 is in the installed state, the control board 832 reads the detection value of the second NTC temperature detector.

[0229] Specifically, the NTC temperature detector is used to detect the temperature of the airflow, so as to prevent the airflow from being too hot to cause damage to the hair, or the temperature being too low to cause low dry efficiency. Each working mode has an optimal wind temperature range, and under the corresponding working mode, the control board 832 can perform negative feedback adjustment on the power of the heating wire 834 based on the temperature measured by the NTC temperature detector, so as to make the wind temperature more stably in the optimal range, and improve the accuracy of wind temperature control.

[0230] When the air nozzle 10 is in the non-installed state, the machine body 20 is used alone, and the air flow directly blows to the hair after flowing out of the machine body 20. Therefore, the air flow temperature detected by the first NTC temperature detector in the first circuit module is very close to the actual air flow temperature blowing to the hair, and the detection value of the first NTC temperature detector can be directly read at this time. When the air nozzle 10 is in the installed state, the machine body 20 and the air nozzle 10 are used in cooperation, and the air nozzle 10 introduces ambient air to increase the air volume. At this time, there is a large difference between the fluid temperature detected by the first NTC temperature detector and the actual air flow temperature blowing to the hair. Therefore, the detection value of the second NTC temperature detector closer to the end of the air outlet path is read to improve the reading accuracy.

[0231] Referring to Figure 1 , Figure 3 and Figure 25 , in some embodiments, the air nozzle 10 includes a first electrical connector 600 electrically connected to the second circuit module, and the machine body 20 includes a second electrical connector 700, and the first circuit module is electrically connected between the second electrical connector 700 and the control panel 832. When the hair drying device is in the installed state that the air nozzle 10 is installed to the machine body 20, the first electrical connector 600 and the second electrical connector 700 are in contact and conductive to enable the first circuit module and the second circuit module to form a path together.

[0232] Referring to Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 Figure 1 Figure 3 Figure 25 , the second electrical connector 700 is arranged at the air outlet end 812 and is located lower than the air outlet end 812. In this way, the second electrical connector 700 can be protected and is not easy to be damaged by accidental touch.

[0233] The specific structure and installation position of the first electrical connector 600 and the second electrical connector 700 can refer to the foregoing embodiments. On this basis, it needs to be supplemented that in the foregoing embodiments, it is mentioned that the wire connection section 720 and the control panel 832 are electrically connected, and specifically, the first circuit module and the control panel 832 are electrically connected.

[0234] 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, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0235] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A hair drying device, characterized in that, The hair drying device comprises: a body (20) comprising a control board (832), a motor (833) and a first circuit module electrically connected to the control board (832), the body (20) having an air inlet (811) and an air outlet end (812), the motor (833) being configured to cause external air flow to flow into the body (20) through the air inlet (811) and to flow out of the body (20) through the air outlet end (812); and at least one air nozzle (10) detachably connected to the body (20) and comprising a second circuit module, the air nozzle (10) being configured to receive the air flow discharged from the air outlet end (812) and to discharge the received air flow after processing. The first circuit module is capable of forming a path alone, and the first circuit module is capable of forming the path together with the second circuit module; and the control board (832) is capable of detecting the path to determine the installation state and / or type of the air nozzle (10).

2. The hair drying device of claim 1, wherein The control board (832) is capable of controlling the hair drying device to switch to a corresponding working mode based on the installation state and type of the air nozzle (10).

3. The hair drying device of claim 2, wherein, The body (20) comprises a heating wire (834) electrically connected to the control board (832), and the control board (832) is capable of controlling the power of the heating wire (834) and the motor (833).

4. The hair drying device of claim 1, wherein, The control board (832) determines the installation state and type of the air nozzle (10) by detecting the voltage of the path.

5. The hair drying device of claim 4, wherein, In each of the air nozzles (10), the second circuit module has a corresponding resistance, so that the voltage of the path detected by the control board (832) is different.

6. The hair drying device of claim 1, wherein, After determining that the air nozzle (10) is in the installation state, the control board (832) is capable of controlling the first circuit module to supply power to the electrical elements in the air nozzle (10).

7. The hair drying device of claim 1, wherein The first circuit module is connected with a first NTC temperature detector, and the second circuit module is connected with a second NTC temperature detector. When the control board (832) determines that the air nozzle (10) is in the non-installation state, the control board (832) reads the detection value of the first NTC temperature detector. When the control board (832) determines that the air nozzle (10) is in the installation state, the control board (832) reads the detection value of the second NTC temperature detector.

8. The hair drying device of claim 1, wherein, The air nozzle (10) comprises a first electrical connector (600) electrically connected to the second circuit module, the body (20) comprises a second electrical connector (700), and the first circuit module is electrically connected between the second electrical connector (700) and the control board (832). When the hair drying device is in the installation state that the air nozzle (10) is installed to the body (20), the first electrical connector (600) is in contact with the second electrical connector (700) to form the path together with the second circuit module.

9. The hair drying device of claim 8, wherein, The second electrical connector (700) is arranged at the air outlet end (812) and is located lower than the air outlet end (812).

10. The hair drying device of claim 9, wherein, The air outlet end (812) has an inwardly recessed accessory mounting groove (821), the second electrical connector (700) is located in the accessory mounting groove (821), and in the mounting state, the air nozzle (10) extends into the accessory mounting groove (821), and the first electrical connector (600) is in contact and conduction with the second electrical connector (700).

11. The hair drying device of claim 10, wherein, The first electrical connector (600) includes a spring needle (610), and the second electrical connector (700) includes a conductive sheet (710) located in the accessory mounting groove (821) and used for elastically abutting against the spring needle (610).

12. The hair drying device of claim 11, wherein, The machine body (20) includes a bracket (820), the motor (833) and the control board (832) are both mounted in the bracket (820), the second electrical connector (700) includes a wire connecting section (720) electrically connected with the first circuit module, and a fixing sheet (730) connected between the wire connecting section (720) and the conductive sheet (710), the conductive sheet (710) is bent relative to the fixing sheet (730), and the conductive sheet (710) is inserted into the bracket (820), and the fixing sheet (730) is fixed to the bracket (820).

13. The hair drying device of claim 12, wherein, The conductive sheet (710) includes a contact portion (711) connected to the fixing sheet (730), and a protruding portion (712) protruding outward from one end of the contact portion (711) away from the fixing sheet (730), and the contact portion (711) is used for elastically abutting against the spring needle (610). An outer side wall of the bracket (820) is provided with an inwardly recessed containing groove (822), a part of a groove bottom wall of the accessory mounting groove (821) is recessed to form a limiting groove (823) in communication with one end of the containing groove (822), and the bracket (820) is further provided with an insertion groove (824) located in an inner side of the limiting groove (823) and in communication therewith. The wire connecting section (720) and the fixing sheet (730) are contained in the containing groove (822), the contact portion (711) is located in the limiting groove (823), and the protruding portion (712) is inserted into the insertion groove (824).

14. The hair drying device of claim 13, wherein, The fixing sheet (730) is fixed in the containing groove (822) by a threaded fastener.

15. The hair drying device of claim 14, wherein, A surface of the threaded fastener is coated with an insulating layer.

16. The hair drying device of claim 13, wherein, A width of the limiting groove (823) is less than 5 mm; and / or A depth of the accessory mounting groove (821) is greater than 5 mm.

17. The hair drying device of claim 11, wherein, The machine body (20) comprises a heating wire (834), a bracket (820) and a hollow protective cover (835), the protective cover (835), the motor (833) and the control board (832) are all installed in the bracket (820), the heating wire (834) is located on the side of the motor (833) away from the air inlet (811), the protective cover (835) is located on the side of the heating wire (834) away from the motor (833), and the annular accessory mounting groove (821) is surrounded between the outer wall of the protective cover (835) and the inner wall of the bracket (820).

18. The hair drying device of claim 17, wherein, The tuyere (10) comprises a connector (400), the end of the connector (400) is annular and is inserted into the accessory mounting groove (821), and the elastic needle (610) is exposed through the connector (400), and the airflow in the machine body (20) flows into the tuyere (10) through the connector (400).

19. The hair drying device of claim 18, wherein, The connector (400) comprises a connector side plate (410) and a connector end plate (420) connected to the end of the connector side plate (410) away from the machine body (20), and the end of the connector side plate (410) away from the connector end plate (420) is inserted into the accessory mounting groove (821) to allow the airflow in the machine body (20) to flow in.

20. The hair drying device of claim 19, wherein, The connector (400) comprises a guard plate (430) protruding outward relative to the connector side plate (410), and the guard plate (430) is located on the outside of the elastic needle (610).

21. The hair drying device of claim 20, wherein, The guard plate (430) and the connector side plate (410) are connected through a boss (440) protruding from the end of the connector side plate (410), and the boss (440) has a guide wall (441) for cooperating with a guide slope (8211) on the groove bottom wall of the accessory mounting groove (821).

22. The hair drying device of claim 11, wherein, The elastic needle (610) comprises a needle body (611), a needle seat (612), an in-seat elastic member (613) and a contact ball (614), the in-seat elastic member (613) and the contact ball (614) are both built in the needle seat (612), part of the needle body (611) is inserted into the needle seat (612) and part of the needle body (611) is exposed outside the needle seat (612), the contact ball (614) is located between the needle body (611) and the in-seat elastic member (613), and the in-seat elastic member (613) is used for applying an elastic force to the needle body (611) toward the conductive sheet (710) through the contact ball (614).

23. The hair drying device of claim 22, wherein, The tuyere (10) comprises a functional assembly (500) for processing airflow, the needle seat (612) and the functional assembly (500) are electrically connected, the needle body (611) is gap-connected with the needle seat (612) and electrically connected with the needle seat (612), and the end face of the needle body (611) close to the contact ball (614) is an inclined face.

24. The hair drying device of claim 10, wherein, The tuyere (10) has an open-end clamping groove (412), the machine body (20) has a clamping block (825), when the machine body (20) and the tuyere (10) are in position alignment, the clamping block (825) can enter the clamping groove (412), when the machine body (20) and the tuyere (10) in position alignment are relatively rotated and moved axially close to each other, the clamping block (825) is clamped into the clamping groove (412).

25. The hair drying device of claim 24, wherein, The machine body (20) comprises a locking member (841) and a locking elastic member (842) connected with each other, when the clamping block (825) is clamped into the clamping groove (412), the locking elastic member (842) is used to apply an elastic force to the locking member (841) towards the tuyere (10), so that the locking member (841) is inserted into the clamping groove (412) to prevent the clamping block (825) from exiting the clamping groove (412).

26. The hair drying device of claim 25, wherein, The locking member (841) comprises a locking portion (8411), a transmission portion (8412) and a push button (8413), the locking portion (8411) and the push button (8413) are both fixed to the transmission portion (8412), and the locking portion (8411) and the locking elastic member (842) are respectively located at both ends of the transmission portion (8412), the locking elastic member (842) is used to push the locking portion (8411) close to the tuyere (10) through the transmission portion (8412), and the push button (8413) is configured to be operatively moved to push the locking portion (8411) away from the tuyere (10) through the transmission portion (8412).

27. The hair drying device of claim 11, wherein, The tuyere (10) comprises a functional assembly (500) for processing airflow, the first electrical connector (600) comprises a contact sheet (640) electrically connected to the elastic needle (610), and the functional assembly (500) comprises a circuit board (540) and a plug needle (580), one end of the plug needle (580) is electrically connected to the circuit board (540), and the other end is electrically connected to the contact sheet (640).

28. The hair drying device of claim 27, wherein, The tuyere (10) comprises an air outlet sleeve (300), the functional assembly (500) is installed in the air outlet sleeve (300), the contact sheet (640) comprises a fixed portion (641) and a connecting portion (642) connected with each other and relatively bent, the connecting portion (642) is inserted into the air outlet sleeve (300), the fixed portion (641) is fixed to the air outlet sleeve (300), and one end of the plug needle (580) away from the circuit board (540) elastically abuts against the connecting portion (642).

29. The hair drying device of claim 28, wherein, The functional assembly (500) has a pin cavity (511) for accommodating the pin (580), the air outlet sleeve (300) is provided with a contact sheet slot (311) and a pin hole (312), the pin hole (312) is communicated with the contact sheet slot (311) and the pin cavity (511), the connecting part (642) is inserted into the contact sheet slot (311), and the pin (580) passes through the pin hole (312) and elastically abuts against the connecting part (642).

30. The hair drying device of any one of claims 1 to 29, wherein, The air nozzle (10) comprises: a housing assembly; an air outlet sleeve (300) connected to the housing assembly, the air outlet sleeve (300) being hollow inside, and the housing assembly and the inside of the air outlet sleeve (300) jointly forming a mounting cavity (101); a functional assembly (500); and a mounting structure comprising a fixing member (330) and a fixing slot (571), one of the fixing member (330) and the fixing slot (571) being arranged on the functional assembly (500), and the other being arranged on the mounting cavity (101), the functional assembly (500) being configured to axially enter the mounting cavity (101) along the air outlet sleeve (300) so that the fixing member (330) elastically retracts radially along the air outlet sleeve (300) until the fixing member (330) is clamped into the fixing slot (571).

31. The hair drying device of claim 30, wherein, The mounting structure comprises a mounting elastic member (340), the outside wall of the functional assembly (500) is provided with the concave fixing slot (571), the air outlet sleeve (300) has a mounting hole (313) communicated with the mounting cavity (101), one end of the mounting elastic member (340) abuts against the air outlet sleeve (300), and the other end abuts against the fixing member (330), so that the fixing member (330) extends into the mounting cavity (101) after passing through the mounting hole (313).

32. The hair drying device of claim 30, wherein, The mounting cavity (101) comprises a first space (1011) and a second space (1012) arranged axially along the air outlet sleeve (300) and communicated, the radial dimension of the first space (1011) is greater than that of the second space (1012), so as to form a stepped surface therebetween, the functional assembly (500) comprises a first part (501) and a second part (502), the radial dimension of the first part (501) is greater than that of the second part (502), the functional assembly (500) is configured to axially enter the mounting cavity (101) along the air outlet sleeve (300), so that the second part (502) extends into the second space (1012), the first part (501) extends into the first space (1011), and when the end surface of the first part (501) abuts against the stepped surface, the fixing member (330) is clamped into the fixing slot (571).

33. The hair drying device of claim 32, wherein, The shell assembly comprises a connected accessory shell (100) and a back cover (200), the air outlet sleeve (300) and the back cover (200) extend into the accessory shell (100), and both are arranged axially along the air outlet sleeve (300), one end of the air outlet sleeve (300) is connected to the accessory shell (100), the other end is connected to the back cover (200), part of the air outlet sleeve (300) and the inside of the back cover (200) together enclose the second space (1012), and the inside of part of the air outlet sleeve (300) encloses the first space (1011).

34. The hair drying device of claim 33, wherein, The back cover (200) comprises a back cover end plate (210) and a back cover side plate (220) protruding from one end of the back cover end plate (210), the back cover end plate (210) is clamped to the accessory shell (100), one end of the air outlet sleeve (300) abuts against the back cover side plate (220), the other end abuts against the accessory shell (100), and part of the air outlet sleeve (300) and the inside of the back cover side plate (220) together enclose the second space (1012).

35. The hair drying device of claim 34, wherein, The air outlet sleeve (300), the back cover (200) and the accessory shell (100) form an annular outer air duct (102), the air outlet sleeve (300) has an airflow hole (351) communicating with the first space (1011) and the outer air duct (102), airflow flowing into the outer air duct (102) through the machine body (20) can enter the first space (1011) through the airflow hole (351) and be discharged after flowing through the functional assembly (500).

36. The hair drying device of claim 30, wherein, The functional assembly (500) is an essential oil atomization assembly, which comprises an essential oil bottle (510) for storing essential oil, a tungsten wire heating element (520), a flow guide rod (530) and a circuit board (540), the tungsten wire heating element (520) is electrically connected to the circuit board (540), the flow guide rod (530) extends into the essential oil bottle (510), the tungsten wire heating element (520) is connected to the flow guide rod (530), and the essential oil in the essential oil bottle (510) can be guided to the tungsten wire heating element (520) through the flow guide rod (530) and atomized by the tungsten wire heating element (520).

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