CN210611348U - Dryer subassembly and hairdryer - Google Patents

Abstract

The utility model discloses a dryer subassembly and hairdryer. Wherein, the dryer subassembly includes: the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are respectively arranged at two opposite ends of the shell; the inner cylinder is arranged in the air duct and is arranged close to the air outlet, and a first buckling piece is arranged on the inner wall surface of the inner cylinder; the heating body is provided with a second clamping piece, and the second clamping piece is clamped with the first clamping piece; and the fan assembly is arranged in the air channel and is arranged close to the air inlet. The technical scheme of the utility model improve the assembly efficiency of hairdryer.

Description

Dryer subassembly and hairdryer

Technical Field

The utility model relates to the technical field of household appliances, in particular to dryer of dryer subassembly and applied this dryer subassembly.

Background

The electric hair drier is one of the essential beauty care small household appliances in life, and brings great convenience to the life of people. The structure of the existing hair dryer usually comprises an air duct component and a handle component, wherein the air duct component comprises a shell, an inner cylinder arranged in the shell, a motor, a fan and a heating element, the heating element is generally a heating wire, and the heating element is arranged in the inner cylinder through a heating wire support. When the electric hair drier works, the electrified heating wire can generate heat, the motor rotates to drive the fan to rotate so as to suck natural wind into the shell, and the natural wind is heated by the heating wire and then is output so as to blow dry hair of a user. The layout and winding method of the heating wire directly influence the heating effect, the winding process of the heating wire is complex, needs professional people to do, and has more assembly procedures, so that the assembly efficiency of the hair drier is low.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing an dryer subassembly and hairdryer aims at improving the assembly efficiency of hairdryer.

In order to achieve the above object, the utility model provides a dryer subassembly, include: the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are respectively arranged at two opposite ends of the shell; the inner cylinder is arranged in the air duct and is arranged close to the air outlet, and a first buckling piece is arranged on the inner wall surface of the inner cylinder; the heating body is provided with a second clamping piece, and the second clamping piece is clamped with the first clamping piece; and the fan assembly is arranged in the air channel and is arranged close to the air inlet.

Optionally, one of the first locking part and the second locking part is a locking groove, and the other of the first locking part and the second locking part is a locking rib, and the locking rib is locked in the locking groove.

Optionally, the first fastening member is a fastening groove, and the fastening groove extends along the axial direction of the inner cylinder and penetrates through two opposite opening ends of the inner cylinder; the heating element is in a long strip shape, the second buckling piece is a clamping rib and extends along the length direction of the heating element, and the clamping rib is clamped in the clamping groove.

Optionally, the inner wall surface of the inner cylinder is convexly provided with two clamping pieces, the two clamping pieces are arranged oppositely, the two clamping pieces surround to form the clamping groove, the clamping groove is a T-shaped groove, and the clamping rib is a T-shaped rib.

Optionally, a plurality of first buckling pieces are arranged, and the plurality of first buckling pieces are distributed at intervals along the circumferential direction of the inner cylinder; the heating body is provided with a plurality of, one the heating body is provided with one the second buckle spare, one the second buckle spare joint in one first buckle spare.

Optionally, the heating element is in a sheet shape, the heating element extends along the radial direction of the inner barrel, and the second buckle piece is arranged on one side of the heating element.

Optionally, the fan assembly comprises: the motor is arranged in the air duct, and at least part of the motor is positioned on one side of the heating body facing the air inlet; the fan is arranged in the air channel and positioned on one side of the motor facing the air inlet, and the fan is connected to an output shaft of the motor in a transmission manner; and the pressure reduction heating wire is arranged in the shell and is electrically connected with the motor.

Optionally, the fan assembly further comprises a heating wire bracket, and the step-down heating wire is mounted on the heating wire bracket; one side of the heating body, which is far away from the second buckle piece, is provided with a yielding notch, and the heating wire support is arranged in the shell and is abutted against the yielding notch of the heating body.

Optionally, the fan assembly further comprises a motor mount to which the motor is mounted; an annular mounting step is formed at the opening end of the inner barrel, which deviates from the air outlet, and the motor support is mounted in the shell and is abutted against the step surface of the annular mounting step.

The utility model also provides an electric hair drier, which comprises an air duct component and a handle component, wherein the air duct component is detachably connected with the handle component; the dryer subassembly includes: the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are respectively arranged at two opposite ends of the shell; the inner cylinder is arranged in the air duct and is arranged close to the air outlet, and a first buckling piece is arranged on the inner wall surface of the inner cylinder; the heating body is provided with a second clamping piece, and the second clamping piece is clamped with the first clamping piece; and the fan assembly is arranged in the air channel and is arranged close to the air inlet.

The technical scheme of the utility model, internal face through in the inner tube sets up first buckle spare, the heat-generating body sets up second buckle spare, like this with second joint spare joint in first buckle spare alright realize the assembly of inner tube and heat-generating body, then, regard heat-generating body and inner tube as a unit mount to the wind channel of casing in, and the air outlet setting of neighbouring casing, install fan unit in the wind channel simultaneously, and the air intake setting of neighbouring casing, so alright accomplish the assembly operation of the dryer subassembly of hairdryer, this assembly operation is relatively simpler, can effectively improve its assembly efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a sectional structure of an embodiment of the hair dryer of the present invention;

FIG. 2 is a schematic view of the hair dryer from another perspective;

FIG. 3 is a schematic structural view of another view angle of the electric hair dryer after the inner barrel and the heating element are assembled;

FIG. 4 is a schematic structural view of the inner barrel of FIG. 3;

FIG. 5 is a schematic view showing the structure of the heat-generating body in FIG. 4.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The utility model provides a dryer subassembly 10 is applied to hairdryer 100.

Referring to fig. 1 to 3, in an embodiment of the present invention, the air duct assembly 10 includes: the air conditioner comprises a shell 11, wherein an air duct 111 is formed in the shell 11, and an air inlet 112 and an air outlet 113 which are communicated with the air duct 111 are respectively arranged at two opposite ends of the shell 11; the inner cylinder 13 is arranged in the air duct 111 and is adjacent to the air outlet 113, and a first buckle piece 131 is arranged on the inner wall surface of the inner cylinder 13; the heating element 15, the heating element 15 has the second buckle 151, the second buckle 151 is buckled in the first buckle 131; and the fan assembly 17, the fan assembly 17 is disposed in the air duct 111 and is adjacent to the air inlet 112.

Specifically, the housing 11 is a hollow structure, an air duct 111 is formed inside the housing 11, the housing 11 has a length direction, an air inlet 112 and an air outlet 113 are respectively formed at two ends of the housing along the length direction, and the air inlet 112 and the air outlet 113 are both communicated with the air duct 111. The inner cylinder 13 is arranged in the air duct 111 and is arranged adjacent to the air outlet 113, and the inner cylinder 13 is approximately horn-shaped, so that natural wind entering the air duct 111 is blown from the larger-diameter end of the inner cylinder 13 to the smaller-diameter end, and stronger wind force flowing out from the air outlet 113 is ensured. The inner wall surface of the inner cylinder 13 is provided with a first buckle part 131, correspondingly, the heating body 15 is provided with a second buckle part 151 matched with the first buckle part 131, when the heating body 15 is assembled, the heating body 15 and the inner cylinder 13 can be fixedly connected only by clamping the second buckle part 151 to the first buckle part 131, and the assembling operation is simple. The heating unit 15 is connected to a controller of the hair dryer 100 through a wire, and can generate heat when being electrified so as to heat natural wind. Meanwhile, a fan assembly 17 is also provided in the air duct 111. The fan assembly 17 is disposed adjacent the intake vent 112. So set up, when the user uses hairdryer 100's hot-blast when blowing hair, with hairdryer 100 circular telegram and control the controller make fan assembly 17 rotate to inhale the wind channel 111 with natural wind in by air intake 112, the controller also controls heat-generating body 15 circular telegram in order to give out heat simultaneously, and natural wind that gets into in wind channel 111 like this heats the back alright air outlet 113 output through heat-generating body 15, and the hot-blast alright of output blow-dry user's hair.

It should be noted that, the heating element 15 is a structure combining a resistance wire and a heat conducting material, wherein the resistance wire is electrically connected with the controller through a wire, and after the resistance wire is electrified, the controller is controlled to electrify the resistance wire in the heating element 15 and emit heat through the heat conducting material, so as to heat natural wind.

Therefore, it can be understood that, the technical scheme of the utility model, set up first buckle spare 131 through the internal face in inner tube 13, heat-generating body 15 sets up second buckle spare 151, with second buckle spare joint like this in first buckle spare 131 alright realize the assembly of inner tube 13 and heat-generating body 15, then, as a whole assembly to casing 11 in wind channel 111 with heat-generating body 15 and inner tube 13, and the setting of the air outlet 113 of neighbouring casing 11, install fan assembly 17 in wind channel 111 simultaneously, and the setting of the air intake 112 of neighbouring casing 11, so alright accomplish the assembly operation of dryer assembly 10 of hairdryer 100, this assembly operation is comparatively simple, can effectively improve its assembly efficiency.

It should be noted that the housing 11 here includes a first housing and a second housing (not labeled) which are detachable, and the detachable manner here is generally a snap connection. The first shell and the second shell jointly enclose to form an air duct 111, an air inlet 112 and an air outlet 113, and the shell 11 is designed to be a split structure, so that the assembly operation of the air duct assembly 10 can be facilitated, and the assembly efficiency of the electric hair drier 100 can be improved.

Optionally, one of the first locking member 131 and the second locking member 151 is a slot, and the other is a rib, and the rib is locked in the slot. With such a configuration, the inner tube 13 and the heating element 15 can be detachably connected. It can be understood that, here, a clamping groove may be provided on the inner wall surface of the inner cylinder 13, the heating element 15 is correspondingly provided with a clamping rib, and the heating element 15 is installed and fixed on the inner side of the inner cylinder 13 through the matching of the clamping rib and the clamping groove; of course, the inner wall surface of the inner cylinder 13 may be provided with a clamping rib, and the heating element 15 may be correspondingly provided with a clamping groove, so that the connection and fixation between the two can also be realized.

Referring to fig. 3 to 5, the first locking member 131 is a locking groove extending along the axial direction of the inner cylinder 13 and penetrating through two opposite opening ends of the inner cylinder 13; the heating element 15 is in a long strip shape, the second buckling piece 151 is a clamping rib and extends along the length direction of the heating element 15, and the clamping rib is clamped in the clamping groove. Such setting can make things convenient for the assembly of heat-generating body 15, and can guarantee that heat-generating body 15 has better steadiness. Meanwhile, the heating element 15 is arranged along the axial extension of the inner barrel 13, so that the contact area between the heating element 15 and natural wind can be increased, the natural wind entering the air duct 111 is effectively and fully heated, the heating time for heating the natural wind is shortened, and the output hot air can be used for rapidly drying hair.

Optionally, two clamping members 135 are convexly arranged on the inner wall surface of the inner cylinder 13, the two clamping members 135 are arranged oppositely, the two clamping members 135 are enclosed to form a clamping groove, the clamping groove is a T-shaped groove, and the clamping rib is a T-shaped rib. Specifically, the holding members 135 are long and extend in the axial direction of the inner cylinder 13, and the two holding members 135 are arranged in parallel and enclose each other to form a clamping groove for matching with the clamping rib of the heating element 15. Further, the cross section of the holding member 135 is substantially L-shaped, so that the two holding members 135 form a T-shaped slot, which can enhance the mounting stability of the heating element 15. It should be noted that, here, the retaining member 135 and the inner barrel 13 are integrated and formed by injection molding, so as to further ensure the installation stability of the heating element 15, and thus ensure the reliability and stability of the hot air operation of the hair dryer 100.

Further, a plurality of first fasteners 131 are provided, and the plurality of first fasteners 131 are distributed at intervals along the circumferential direction of the inner cylinder 13; the heating element 15 is provided with a plurality of heating elements, the heating element 15 is provided with a second buckling piece 151, and the second buckling piece 151 is buckled with a first buckling piece 131. Here heat-generating body 15 is equipped with a plurality ofly, and a plurality of heat-generating bodies 15 are along the circumference interval distribution of inner tube 13, and so, a plurality of heat-generating bodies 15 can be followed all directions and heated the natural wind that gets into in wind channel 111, further increase the heating surface, can improve hairdryer 100's heating power like this, improve the hot-blast temperature in heating back, shorten the heating time of heating natural wind to make the hot-blast hair that can be more quick of output, improve user experience.

Alternatively, the heating element 15 is in the form of a sheet, the heating element 15 extends in the radial direction of the inner tube 13, and the second locking member 151 is provided on one side of the heating element 15. Like this heat-generating body 15 is along radially heating from hot-blast heating, increases its heating surface, shortens the heating time of heating natural wind to make the hot-blast hair that can weather more fast of output, improve user experience. When heat-generating body 15 sets up a plurality ofly, and during a plurality of heat-generating bodies 15 along inner tube 13's circumference interval distribution, can separate into a plurality of little wind channels 111 with wind channel 111, can carry out the reposition of redundant personnel heating to the natural wind that gets into in the wind channel 111 like this, so can shorten the heating time of heating natural wind more effectively, and simultaneously, also can effectively improve its heating power, further improve the hot-blast temperature after the heating, thereby make the hot-blast hair that can be more quick of output, improve user experience.

Referring again to fig. 1 and 2, the fan assembly 17 includes: the motor 171 is arranged in the air duct 111, and at least part of the motor 171 is positioned on one side of the heating body 15 facing the air inlet 112; the fan 172 is arranged in the air duct 111 and located on one side of the motor 171 facing the air inlet 112, and the fan 172 is in transmission connection with an output shaft of the motor 171; and a step-down heating wire 173, the step-down heating wire 173 being installed in the case 11 and electrically connected to the motor 171. Here, the motor 171 mainly provides a power source, and is electrically powered to rotate and drive the fan 172 to rotate, so as to draw natural wind into the wind channel 111 from the wind inlet 112. Since the voltage of the motor 171 is low and cannot be directly connected to an ac power source, a step-down heating wire 173 is generally provided, and the step-down heating wire 173 steps down the power voltage to make the voltage value meet the voltage range of the motor 171. It can be understood that, here, the motor 171 and the step-down heating wire 173 are both electrically connected to the controller of the electric hair dryer 100, when the user uses the electric hair dryer 100, if the user needs to dry hair by using natural wind, the controller only needs to control the motor 171 to rotate to drive the fan 172 to rotate, so that the natural wind is sucked into the air duct 111 from the air inlet 112 and is output through the air outlet 113. If the hair needs to be dried by hot air, the controller simultaneously controls the heating element 15 to be electrified, so that the heating element 15 can heat the natural air entering the air duct 111, and the heated hot air is output from the air outlet 113 and can be used for drying the hair of the user.

Further, the fan assembly 17 further includes a heater bracket 174, and the step-down heater 173 is mounted to the heater bracket 174; one side of the heating element 15 departing from the second fastener 151 is provided with a relief notch 153, and the heating wire support 174 is installed in the casing 11 and abuts against the relief notch 153 of the heating element 15. Here, the heater bracket 174 is fixedly installed in the air duct 111 for installing and fixing the step-down heater 173, a yielding notch 153 is formed in one side of the heating element 15 facing the air inlet 112, the yielding notch 153 penetrates through one side of the heating element 15 facing away from the second fastening member 151, and after the heater bracket 174 is assembled, one side of the heater bracket 174 facing away from the air inlet 112 is just abutted to the yielding notch 153 of the heating element 15. Therefore, the installation stability of the heating element 15 and the heating wire support 174 can be ensured, and the stability and the reliability of the normal operation of the hair drier 100 can be ensured. Meanwhile, the arrangement of all parts in the air duct 111 can be ensured to be compact, and the reduction of the whole size of the air duct assembly 10 is facilitated.

Further, the fan assembly 17 further includes a motor bracket 175, and the motor 171 is mounted to the motor bracket 175; an opening end of the inner cylinder 13 facing away from the air outlet 113 is formed with an annular mounting step 133, and the motor holder 175 is mounted in the housing 11 and abuts against a step surface of the annular mounting step 133. Here, the motor bracket 175 is installed in the air duct 111 and located on one side of the inner cylinder 13 facing the air inlet 112, an opening end of the inner cylinder 13 facing the air inlet 112 is formed with an annular installation step 133, and the motor bracket 175 is just abutted against a step surface of the annular installation step 133 after being assembled, so that the installation stability of the inner cylinder 13 and the motor bracket 175 can be ensured, thereby ensuring the stability and reliability of the normal operation of the hair dryer 100. Meanwhile, the arrangement of parts in the air duct 111 can be more compact, which is beneficial to reducing the overall size of the air duct assembly 10, and further reducing the overall size of the electric hair drier 100.

Further, referring to fig. 1 again, the housing 11 is provided with an air inlet net 114 at the air inlet 112, and the air inlet net 114 is arranged to effectively prevent particle impurities in the natural wind from entering the air duct 111 along with the natural wind to damage internal components, thereby playing a role of protection. Here the grill 114 is typically mounted to the intake end of the housing 11 by grill brackets 116.

Further, please refer to fig. 1 again, the housing 11 is provided with an air outlet net 115 at the air outlet 113, and the arrangement of the air outlet net 115 mainly plays a role of shunting the output air, so that the output air is more moderate, and the user experience is improved.

Further, the air duct assembly 10 further includes an air nozzle 19, and the air nozzle 19 corresponds to the air outlet 113 and is detachably mounted to the housing 11. The air nozzle 19 is in a shape of a horn, and one end with a smaller diameter is connected to the shell 11, so that air output from the air outlet 113 enters the air nozzle 19 and is output from the end with a larger diameter of the air nozzle 19 to dry hair of a user, and therefore, the contact area between the air and the hair can be increased, and the hair drying process is accelerated. Meanwhile, the air nozzle 19 can effectively prevent the phenomenon that the hot air output from the air outlet 113 directly contacts the hair to damage the hair quality.

The utility model discloses still provide a hairdryer 100, hairdryer 100 includes as before dryer subassembly 10, and the concrete structure of this dryer subassembly 10 refers to aforementioned embodiment. Since the electric hair dryer 100 adopts all technical solutions of all the aforementioned embodiments, at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments are achieved, and no further description is given here.

Referring again to fig. 1 and 2, hair dryer 100 further includes a handle assembly 30, and the air duct assembly 10 is detachably connected to the handle assembly 30.

Specifically, the handle assembly 30 includes a handle housing 31, the handle housing 31 is a hollow structure, an accommodating cavity is formed inside the handle housing 31, the handle housing 31 has a length direction, opposite ends along the length direction are mutually communicated, one end of the handle housing 31 is detachably connected to one side of the casing 11 of the air duct assembly 10, and the detachable connection mode is generally a snap connection or a screw connection. The accommodating cavity is internally provided with a controller, the controller penetrates through the joint of the shell 11 and the handle shell 31 through a wire and is electrically connected with the heating body 15, the motor 171 and the pressure-reducing heating wire 173, and the handle shell 31 is provided with a mounting hole communicated with the accommodating cavity for mounting the button 33. It should be noted that there are a plurality of mounting holes, and accordingly, the handle assembly 30 includes a plurality of buttons 33, one button 33 is mounted in one mounting hole and electrically connected to the controller, where the plurality of buttons 33 are respectively a switch button, a wind speed adjusting button and a heating button, and different buttons 33 can be selected according to the user's needs when the user uses the hair dryer 100. The controller is further connected with a power cord 35, the power cord 35 penetrates through one end of the handle shell 31, which is far away from the air duct assembly 10, and is exposed out of the handle shell 31, and an electric plug is arranged at the exposed end of the power cord 35 and is used for being connected with a socket, so that when the electric hair dryer 100 is used, the electric plug is firstly inserted into the socket, the electric plug is electrically communicated with the socket, then a user holds the handle shell 31, the switch button 33 is turned on, and different buttons are selected according to the self needs of the user, such as a heating button and a wind speed adjusting button, and.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. The utility model provides a dryer subassembly, is applied to the hairdryer, its characterized in that, the dryer subassembly includes:

the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are respectively arranged at two opposite ends of the shell;

the inner cylinder is arranged in the air duct and is arranged close to the air outlet, and a first buckling piece is arranged on the inner wall surface of the inner cylinder;

the heating body is provided with a second clamping piece, and the second clamping piece is clamped with the first clamping piece; and

and the fan assembly is arranged in the air channel and is arranged close to the air inlet.

2. The air duct assembly according to claim 1, wherein one of the first and second locking members is a locking groove, and the other one of the first and second locking members is a locking rib, and the locking rib is locked in the locking groove.

3. The air duct assembly according to claim 2, wherein the first locking member is a locking groove extending along an axial direction of the inner cylinder and penetrating through two opposite opening ends of the inner cylinder;

the heating element is in a long strip shape, the second buckling piece is a clamping rib and extends along the length direction of the heating element, and the clamping rib is clamped in the clamping groove.

4. The air duct assembly as claimed in claim 3, wherein two retaining members are protruded from an inner wall surface of the inner cylinder, the two retaining members are disposed opposite to each other, the two retaining members surround to form the slot, the slot is a T-shaped slot, and the retaining rib is a T-shaped rib.

5. The air duct assembly according to any one of claims 1 to 4, wherein a plurality of first fasteners are provided, and the plurality of first fasteners are distributed at intervals along the circumferential direction of the inner cylinder;

the heating body is provided with a plurality of, one the heating body is provided with one the second buckle spare, one the second buckle spare joint in one first buckle spare.

6. The air duct assembly of claim 5, wherein the heating element is in a shape of a sheet, the heating element extends along a radial direction of the inner barrel, and the second fastener is disposed on one side of the heating element.

7. The air duct assembly of claim 6, wherein the fan assembly comprises:

the motor is arranged in the air duct, and at least part of the motor is positioned on one side of the heating body facing the air inlet;

the fan is arranged in the air channel and positioned on one side of the motor facing the air inlet, and the fan is connected to an output shaft of the motor in a transmission manner; and

the pressure reduction heating wire is arranged in the shell and is electrically connected with the motor.

8. The air duct assembly of claim 7, wherein the fan assembly further comprises a heater bracket, the step-down heater being mounted to the heater bracket;

one side of the heating body, which is far away from the second buckle piece, is provided with a yielding notch, and the heating wire support is arranged in the shell and is abutted against the yielding notch of the heating body.

9. The air duct assembly of claim 7, wherein the fan assembly further comprises a motor bracket, the motor being mounted to the motor bracket;

an annular mounting step is formed at the opening end of the inner barrel, which deviates from the air outlet, and the motor support is mounted in the shell and is abutted against the step surface of the annular mounting step.

10. A hair dryer comprising a dryer assembly as claimed in any one of claims 1 to 9 and a handle assembly, said dryer assembly being removably connected to said handle assembly.

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