CN215271031U - Hair care implement of making an uproar falls - Google Patents

Abstract

The utility model provides a noise-reduction hair nursing appliance, which comprises a shell, wherein an airflow passage is formed inside the shell, a fan unit is arranged in the airflow passage, an airflow outlet for discharging airflow is arranged at the downstream of the airflow passage, an airflow inlet for airflow to enter is arranged at the upstream of the airflow passage, the fan unit enables airflow to enter the airflow passage from the airflow inlet and then to be discharged from the airflow outlet, the airflow passage comprises a noise-reduction structure for reducing airflow flowing noise, the airflow passes through the noise-reduction structure and the fan unit to flow to the airflow outlet, the distance between the end part of the fan unit and the noise-reduction structure is H, wherein, H is more than or equal to 1mm and less than or equal to 10mm, and the problem that in the existing hair nursing appliance, when the airflow with larger flow speed flows through the airflow passage, due to the turbulent flow formed in the flowing process, the air flow efficiency is very unfavorable, and the corresponding noise is generated, so that the user experience is poor.

Description

Hair care implement of making an uproar falls

Technical Field

The utility model relates to a hair care equipment field especially relates to a hair care implement of making an uproar falls.

Background

In hair care, a user generally needs to apply air flow to the hair using a hair care appliance to dry and style the hair, the rotating speed of the motor of the traditional high-speed hair care appliance can reach 8W-15W/min generally, so that the flow rate of the air flow is large generally, when the high-speed airflow flows through the airflow channel, the structural part is arranged in the airflow channel, the high-speed airflow can reflect the airflow when contacting the structural part, and the reflected airflow forms a plurality of airflow small vortexes in the airflow passage, when the high-speed airflow entering the airflow passage is contacted with the airflow small vortexes, the original flowing direction of the airflow is disturbed, so that more small airflow vortexes are formed, the airflow forms turbulence in the flowing process, the efficiency of the airflow is very unfavorable, and the noise is correspondingly generated, so that the user experiences poor feeling in use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a hair care implement of making an uproar falls mainly solves not enough among the prior art, has specifically solved among the current high-speed hair care implement, and when the great air current of velocity of flow flowed through air current path, because the air current forms the torrent at the in-process that flows, very unfavorable to the flow efficiency of air current, and still can corresponding great noise of production for user's experience feels relatively poor problem.

(II) technical scheme

The utility model provides a noise-reducing hair nursing appliance, which comprises a shell, wherein an airflow passage is formed inside the shell, a fan unit is arranged in the airflow passage, an airflow outlet for discharging airflow is arranged at the downstream of the airflow passage, an airflow inlet for airflow entering is arranged at the upstream of the airflow passage, the fan unit enables airflow to enter the airflow passage from the airflow inlet and then be discharged from the airflow outlet,

the air flow passage comprises a noise reduction structure for reducing the flowing noise of air flow, the air flow flows to an air flow outlet through the noise reduction structure and the fan unit, the distance between the end part of the fan unit and the noise reduction structure is H, and H is more than or equal to 1mm and less than or equal to 10 mm.

The noise reduction structure is arranged in the airflow passage, airflow can pass through the noise reduction structure firstly, so that the airflow uniformly flows along the appointed and approximately uniform direction, small airflow vortexes formed in the airflow passage are reduced, turbulence formed in the flowing process of the airflow is reduced, the flowing resistance of the airflow is reduced, noise is reduced, and user experience is improved; the distance is reserved between the end part of the fan unit and the noise reduction structure, so that air flow cannot enter the fan unit immediately when flowing out of the noise reduction structure, the existence of the distance can form a buffer effect on the air flow flowing out of the noise reduction structure, the flow speed of the air flow is reduced, the impact force of the air flow to the fan unit is reduced, turbulence can be reduced, and noise is reduced, but when the distance is too small, namely H is less than 1mm, the air flow blown out of the noise reduction structure cannot be effectively buffered, the impact force of the air flow on the fan unit is large, large noise can be generated, and the user experience feeling is poor; when the distance is too large, namely H is larger than 10mm, after the airflow flows out of the noise reduction structure, the airflow forms a diffusion shape, due to the fact that the distance is too large, the airflow cannot timely pass through the fan unit after the speed of the airflow is reduced, part of the airflow is retained in the distance, when new airflow enters the distance, the retained airflow is contacted, airflow in the airflow channel is enabled to be turbulent, turbulence is formed, the airflow flow efficiency is influenced, meanwhile, large noise can be generated, the user experience feeling is poor, and H is larger than or equal to 1mm and smaller than or equal to 10mm, so that the optimal distance with the minimum turbulence is formed after the airflow flows out of the noise reduction structure.

Preferably, the noise reduction structure is located upstream of the fan unit, the fan unit includes a fan blade and a housing wall surrounding the fan blade, the housing wall defines an airflow channel therein, and an airflow entering the airflow channel from the airflow inlet passes through the noise reduction structure and enters the airflow channel, the fan unit further includes a damping sleeve sleeved outside the housing wall and protruding from an end of the housing wall, and a lower end of the damping sleeve is provided with a fillet.

The damping sleeve has the advantages that the lower end of the damping sleeve is in the fillet design, so that when airflow flows to the lower end of the damping sleeve, the airflow is guided in the flowing direction, and turbulence of the airflow is reduced, so that turbulence formed by the airflow due to reflection is reduced, noise is reduced, and user experience is improved; the airflow channel is formed in the fan unit, so that when the airflow passes through the fan unit, the impact force of the airflow on the fan unit can be dispersed and weakened, the noise is reduced, meanwhile, the airflow channel does not need to be separately arranged outside the fan unit, the installation space is saved, and the structure is more compact.

Preferably, the distance between the end part of the shell wall and the noise reduction structure is H, the distance between the end part of the damping sleeve and the noise reduction structure is H, wherein H is more than or equal to 1mm and less than or equal to 6.5 mm.

The damping sleeve has the advantages that the damping sleeve protruding out of the end part of the shell wall is arranged outside the shell wall, the damping sleeve at the protruding part shields air flow, and partial air flow flowing between the fan unit and the inner wall of an air flow passage when the air flow flows to the fan unit is reduced, so that loss of the air flow is caused; meanwhile, when h is less than 1mm, the distance between the end part of the damping sleeve and the noise reduction structure is smaller, and the damping sleeve and the noise reduction structure are easily blown by air flow to be in contact friction to generate noise in use; when h is not less than 1mm and not more than 6.5mm, the distance between the damping sleeve and the noise reduction structure is in the optimal range, high-speed airflow can not blow to the fan unit immediately after flowing out of the noise reduction structure, the airflow can be decelerated through the distance, the airflow is buffered, the impact force of the airflow on the fan unit is reduced, the noise is reduced, and the user experience is better.

Preferably, the chamfer angle of the lower end of the damping sleeve is R, wherein R is more than or equal to 1 degree and less than 90 degrees.

The lower end of the damping sleeve is provided with the chamfer, so that when the air flow is blown to the fan unit from the lower end of the damping sleeve, the air flow can be guided, the reflection of the air flow is reduced, the formation of turbulence is reduced, meanwhile, the air flow is gathered and blown to the noise reduction structure, the air inlet efficiency is improved, and meanwhile, when R is less than 1 degree, the lower end of the damping sleeve forms the chamfer along the reverse air flow direction, so that the air flow cannot be guided; when R is larger than 90 degrees, the chamfer forms a roughly parabolic shape, and R =90 degrees is the highest point of the parabola at the position of the chamfer, namely when the airflow flows to the chamfer along the direction of R =90 degrees, the airflow is branched, so that partial airflow loss is caused, and the air intake efficiency is influenced; when R is more than or equal to 1 degree and less than 90 degrees, the chamfer forms a shape which is contracted towards the noise reduction structure, and further better guides the air flow.

Preferably, a central axis of the fan unit is parallel to a central axis of the noise reducing structure.

The noise reduction structure has the advantages that airflow flowing through the noise reduction structure can flow to the fan unit along the linear direction as much as possible, and a small part of airflow which cannot flow to the fan unit along the linear direction can be blown to the fan unit only by deflecting a small angle, so that the flowing direction of the airflow is approximately uniform, small airflow vortexes formed in the airflow channel are reduced, the formation of turbulence is reduced, and the noise generated by the turbulence is reduced; and the flow efficiency of the air flow can be improved; assembly of the fan unit and the noise reducing structure is also facilitated.

Preferably, the noise reduction structure has a plurality of guide holes through which the air flow passes, the guide holes having a first hole adjacent to the fan unit and a second hole adjacent to the air flow inlet, and an area of the first hole is greater than or equal to an area of the second hole.

The fan has the advantages that the guide holes are used for enabling the airflow to pass through the noise reduction structure, so that the guide holes have a guide effect on the airflow, the airflow can uniformly flow to the fan unit from the noise reduction structure in a small strand, turbulence formed in an airflow passage is reduced, and noise is reduced; the area in the first hole in water conservancy diversion hole is greater than or equal to the area in second hole, makes the water conservancy diversion hole be roughly the diffusion state along the air current flow direction to when the air current flows out the water conservancy diversion hole, the scope that the air current flows is wider, and the velocity of flow reduces gradually, plays the cushioning effect to the air current, has weakened the impact of air current to fan unit on the one hand, and on the other hand reduces the formation of torrent, and then the noise reduction, and user experience is better.

Preferably, the housing includes an air duct defining the air flow passage, and the noise reduction structure is integrally connected to the air duct.

The air guide duct has the advantages that the noise reduction structure is integrally connected with the air guide duct, so that a connecting gap between the noise reduction structure and the air guide duct is minimum or even disappears, when air flows through the air guide duct, the noise reduction structure can be stably kept at a specified installation position, all the air flows flowing through the air guide duct pass through the noise reduction structure, the air flow loss is reduced, meanwhile, the noise is reduced, and the user experience is better; and also facilitates assembly.

Preferably, the central axis of the noise reduction structure is parallel to the central axis of the air duct.

The air guide duct has the advantages that the air flow can flow along the direction parallel to the central axis of the air guide duct, so that most of the air flow cannot contact with the inner wall of the air guide duct when flowing in the air guide duct, the friction resistance of the air flow is reduced, the turbulence is reduced, the flow efficiency of the air flow is improved, and the noise is reduced; meanwhile, the positioning and installation of the noise reduction structure and the air duct are facilitated.

Preferably, the air duct comprises a first shell and a second shell which are separated along the axis direction of the air duct, and the noise reduction structure is integrally connected with the first shell and detachably connected with the second shell.

The air duct has the advantages that the noise reduction structure is integrally connected with the first shell of the air duct, so that a connecting gap between the noise reduction structure and the first shell is minimum or even disappears, the noise reduction structure and the first shell can be stably kept at a specified mounting position, the air duct is more convenient to assemble or disassemble, and when air flows through the noise reduction structure, the air flow can completely pass through the noise reduction structure, so that the air flow loss is reduced, the noise is reduced, and the user experience is improved; the air duct is divided into a structure formed by the first shell and the second shell in a detachable mode, other structural parts can be conveniently installed in the air duct, and the air duct is convenient and fast to assemble.

Preferably, the noise reduction structure is made of nylon materials.

The nylon material product has the advantages that the nylon material product has smooth surface and low friction coefficient, when air flows through the noise reduction structure, the friction to the air flow is low, so that the air flow flows through the noise reduction structure more smoothly, and the noise generated by the air flow due to friction is reduced; meanwhile, the nylon material is lighter in weight, so that the whole machine is lighter, and the user experience is better.

Drawings

FIG. 1 is a schematic view of a hair care appliance;

FIG. 2 is a schematic cross-sectional view of portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a flow guide hole;

FIG. 4 is an exploded view of the air duct;

FIG. 5 is a perspective view of the fan unit;

figure 6 is a schematic perspective view of the first shell and noise reduction structure,

wherein, 1, a shell; 101. an airflow outlet; 102. an airflow inlet; 2. a fan unit; 21. a motor; 22. a fan blade; 23. a housing wall; 24. a shock-absorbing sleeve; 25. an air flow channel; 3. a noise reduction structure; 31. a flow guide hole; 32. a first hole; 33. a second hole; 4. an air duct; 41. a first shell; 42. a second shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, 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 work belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model provides a hair care implement of making an uproar falls, including casing 1, casing 1 is inside to form airflow channel dispose fan unit 2 in the airflow channel the low reaches of airflow channel set up the air current outlet 101 of exhaust air current the upper reaches of airflow channel set up the air current import 102 that is used for the air current to get into, fan unit 2 makes the air current by air current import 102 gets into in the airflow channel, again by air current outlet 101 discharges, including the structure 3 of making an uproar falls that reduces the air current noise in the airflow channel, the air current warp fall make an uproar structure 3 with fan unit 2 flows to air current outlet 101, the tip of fan unit 2 with fall the interval between the structure 3 of making an uproar and be H, wherein, 1mm is less than or equal to H and is less than or equal to 10 mm.

As shown in fig. 1 and 2, wherein the air inlet 102 is used for air flow entering the hair care appliance from the external environment, the air outlet 101 is used for air flow blowing from the hair care appliance to the hair, the housing 1 forms a housing of the hair care appliance, the fan unit 2 is used for air flow, preferably, the fan unit 2 comprises a fan and a motor 21, the motor 21 drives the fan to rotate, the air flow passage is the flowing through of the air flow flowing in the hair care appliance, the fan unit 2 and the noise reduction structure 3 are arranged in the air flow passage, so that the air flow enters the air flow passage from the air inlet 102, firstly passes through the noise reduction structure 3, then passes through the fan unit 2, and finally is discharged from the air outlet 101 to act on the hair for hair care, such as hair drying, hair styling and the like, and the preferred hair care appliance is a hair dryer, it can be understood that the hair care appliance can also be other devices for styling the hair by air flow, such as curling irons, hair straighteners, etc.; the preferable noise reduction structure 3 and the fan unit 2 are respectively provided with a channel for air flow to flow through, the noise reduction structure 3 is arranged in the air flow passage, the air flow can firstly pass through the noise reduction structure 3, so that the air flow uniformly flows along the appointed and approximately uniform direction, approximately uniform means that the air flow can have small-angle offset of partial air flow, but the final direction of all the air flow is the same, small airflow vortexes formed in the air flow passage are reduced, turbulence formed in the flowing process of the air flow is reduced, further the flowing resistance of the turbulence in the flowing process of the air flow is reduced, noise is reduced, user experience is improved, a distance is formed between the end part of the fan unit 2 and the noise reduction structure 3, so that the air flow cannot immediately enter the fan unit 2 when flowing out of the noise reduction structure 3, the existence of the distance can form a buffer effect on the air flow flowing out of the noise reduction structure 3, and the flow speed of the air flow is reduced, therefore, the impact force of the airflow to the fan unit 2 is reduced, the noise is further reduced, and meanwhile, the formation of turbulence can be reduced, but when the distance is too small, namely H is less than 1mm, the airflow blown out of the noise reduction structure 3 cannot be effectively buffered, the impact force of the airflow to the fan unit 2 is large, large noise can be generated, and the user experience feeling is poor; when the distance is too large, that is, H > 10mm, after the airflow flows out of the noise reduction structure 3, the airflow forms a diffusion shape, because the distance is too large, the airflow cannot pass through the fan unit 2 in time after the speed of the airflow is reduced, part of the airflow stays in the distance, when new airflow can enter the distance, the airflow in the airflow passage is disturbed by contacting the staying airflow, turbulence is formed, great noise is generated while the airflow flowing efficiency is influenced, the user experience is poor, and H is more than or equal to 1mm and less than or equal to 10mm is an optimal distance for forming the turbulence minimum after the airflow flows out of the noise reduction structure 3, wherein H =2mm, H =7.65mm, H =8mm, preferably, H =7.65 mm.

It will be appreciated that the air flow entering the air flow path from the air flow inlet 102 passes through the fan unit 2, then through the noise reducing structure 3 and finally out of the air flow outlet 101 to the hair for treatment thereof.

As shown in fig. 2 and 5, wherein the noise reducing structure 3 is located upstream of the fan unit 2, the fan unit 2 includes a fan blade 22 and a housing wall 23 surrounding the fan blade 22, the housing wall 23 defines an air flow channel 25 therein, and the air flow entering the air flow channel from the air flow inlet passes through the noise reducing structure 3 and enters the air flow channel 25, the fan unit 2 further includes a damping sleeve 24 covering the housing wall 23 and protruding from the end of the housing wall 23, the lower end of the damping sleeve 24 is rounded, specifically, the fan blade 22 is used for guiding the air flow, the fan blade 22 is driven by the motor 21, the housing wall 23 surrounding the fan blade 22 can enable the air flow to enter the housing wall 23, in this case, the preferred housing wall 23 is annular, the lower end of the damping sleeve 24 is rounded, so that when the air flow blows to the lower end of the damping sleeve 24, the flow direction of the air flow is guided, turbulence formed by airflow due to reflection is reduced, so that noise is reduced, and user experience is improved; the airflow channel 25 is formed in the fan unit 2, so that when the airflow passes through the fan unit 2, the impact force of the airflow on the fan unit 2 can be dispersed and weakened, the noise is reduced, meanwhile, the airflow channel 25 does not need to be separately arranged outside the fan unit 2, the installation space is saved, and the structure is more compact; preferably, the damping sleeve 24 is sleeved on the outer wall of the housing wall 23, the damping sleeve 24 plays a role in buffering the housing wall 23, the further damping sleeve 24 can play a role in damping the fan unit 2, and therefore the situation that the housing wall 23 is shaken due to the fact that air flow blows the housing wall 23 and is collided with the inner wall of an air flow passage to generate noise is avoided, and due to the fact that the lower end of the damping sleeve 24 is designed to be rounded, when the air flow blows towards the lower end of the damping sleeve 24, the flowing direction of the air flow is guided, turbulence formed by the air flow due to refraction is reduced, and user experience is improved.

As shown in fig. 2, a distance between the end of the housing wall 23 and the noise reduction structure 3 is H, a distance between the end of the damping sleeve 24 and the noise reduction structure 3 is H, wherein H is greater than or equal to 1mm and less than or equal to 6.5mm, specifically, a distance is formed between the end of the housing wall 23 and the noise reduction structure 3, wherein the end of the housing wall 23 is the end of the housing wall 23 facing the noise reduction structure 3, so that the damping sleeve 24 protruding from the housing wall 23 is disposed at the end of the housing wall 23, the damping sleeve 24 at the protruding portion shields the air flow, so as to reduce the loss of the air flow caused by the partial air flow flowing between the fan unit 2 and the inner wall of the air flow passage when the air flow flows toward the fan unit 2, and when the air flow blows toward the damping sleeve 24, because the damping sleeve 24 generally has a certain toughness, the damping sleeve 24 can play a certain role of buffering the impact force of the air flow, the flow velocity of the air flow is weakened, turbulence is reduced, and meanwhile, the noise can be absorbed, so that the noise is reduced, the user experience is better, meanwhile, when h is smaller than 1mm, the distance between the end part of the damping sleeve 24 and the noise reduction structure 3 is smaller, and in use, the damping sleeve and the noise reduction structure are easily blown by the air flow to be contacted, so that noise can be generated; when h is larger than or equal to 1mm and smaller than or equal to 6.5mm, the distance between the shock absorption sleeve 24 and the noise reduction structure 3 is in the optimal range, high-speed airflow does not blow to the fan unit 2 immediately after flowing out of the noise reduction structure 3, the airflow is decelerated through the distance, the airflow is buffered, the impact force of the airflow on the fan unit 2 is reduced, noise is reduced, and user experience is better, wherein h =1mm, h =2.3mm, h =4mm, preferably, h =2.3, mm.

Due to H = H + the length of the projecting portion of the damper sleeve 24, H > H when the damper sleeve 24 projects out of the housing wall 23; it will be appreciated that H = H when the length of the projecting portion of the damping sleeve 24 is equal to zero, i.e. the end wall of the damping sleeve 24 is flush with the end wall of the housing wall 23.

As shown in fig. 2, wherein the chamfer angle of the lower end of the damping sleeve 24 is R, wherein R is greater than or equal to 1 ° and less than 90 °, specifically, the lower end of the damping sleeve 24 has a chamfer angle, the arc-shaped wall of the chamfer angle extends along the airflow flowing direction, preferably, the chamfer angle enables the airflow to form a gathering effect, when the airflow is blown to the fan unit 2 from the lower end of the damping sleeve 24, the airflow can be guided, the reflection of the airflow is reduced, the formation of turbulence is further reduced, and meanwhile, the airflow is gathered and blown to the noise reduction structure 3, the air intake efficiency is improved, and meanwhile, when R is less than 1 °, the lower end of the damping sleeve 24 forms a chamfer angle along the reverse airflow direction, so that the airflow cannot be guided; when R is larger than 90 degrees, the chamfer forms a roughly parabolic shape, and the line of R =90 degrees is the highest point of the parabola, namely when the airflow flows to the chamfer along the line of R =90 degrees, the airflow forms a branch, thereby causing partial airflow loss and influencing the air intake efficiency; when R is more than or equal to 1 degree and less than 90 degrees, the chamfer forms a shape which is contracted towards the noise reduction structure 3, and further better guides the air flow.

As shown in fig. 2, the central axis of the fan unit 2 is parallel to the central axis of the noise reducing structure 3, and specifically, it is preferable that the central axis of the fan unit 2 is in the same horizontal line with the central axis of the noise reducing structure 3, so that the airflow flowing through the noise reducing structure 3 can flow to the fan unit 2 in a straight direction as much as possible, and a small portion of the airflow which cannot flow to the fan unit 2 in the straight direction can be blown to the fan unit 2 only by deflecting a small angle, which has a small influence on the airflow in the airflow path, reduces small vortices of the airflow formed in the airflow path, thereby reducing the formation of turbulence, and further reducing the noise generated by turbulence; and the flow efficiency of the air flow can be improved; assembly of the fan unit 2 and the noise reducing structure 3 is also facilitated.

As shown in fig. 3, the noise reducing structure 3 has a plurality of guiding holes 31 for allowing the airflow to pass through, the guiding holes 31 have a first hole 32 close to the fan unit 2 and a second hole 33 close to the airflow inlet 102, the area of the first hole 32 is greater than or equal to the area of the second hole 33, specifically, the guiding holes 31 are used for allowing the airflow to pass through the noise reducing structure 3, so that the guiding holes 31 have a guiding effect on the airflow; the preferable flow guide hole 31 is a through hole penetrating the noise reduction structure 3, the first hole 32 and the second hole 33 are respectively the connection part of the flow guide hole 31 at the two opposite side surfaces of the noise reduction structure 3, and the preferable shape of the axial section of the flow guide hole 31 is an inverted trapezoid or rectangular structure, so that when airflow flows out of the flow guide hole 31, the airflow flowing range is wider, the flow speed is gradually reduced, the airflow is buffered, on one hand, the impact of the airflow on the fan unit 2 is weakened, on the other hand, the formation of turbulence is reduced, and then the noise is reduced, the user experience is better, the preferable shape of the flow guide hole 31 is a hexagon, because the area of the hexagon in a circular or approximately circular plane is more reasonable, a plurality of hexagonal flow guide holes 31 are arranged on the surface of the whole noise reduction structure 3, and of course, the flow guide hole 31 can also be designed into a polygon such as a triangle, a rectangle, a pentagon, or a circle, or the like, Oval, etc.

As shown in fig. 6, the casing 1 includes an air duct 4 defining the airflow path, the noise reduction structure 3 is integrally connected to the air duct 4, and specifically, the air duct 4 defines a part of the airflow path, so that the air duct 4 can guide the airflow, and the noise reduction structure 3 is integrally connected to the air duct 4, in this case, the noise reduction structure 3 and the air duct 4 are preferably integrally connected, and it can be understood that the noise reduction structure 3 and the air duct 4 can be fixed by a connecting member, so that the two can be disassembled and assembled together, so that a connection gap between the noise reduction structure 3 and the air duct 4 is minimized or even eliminated, so that when the airflow flows through the air duct 4, the noise reduction structure 3 can be stably maintained at a designated installation position, and the airflow flowing through the air duct 4 all passes through the noise reduction structure 3, thereby reducing the noise while reducing the airflow loss, the user experience is better; and also facilitates assembly.

As shown in fig. 2, a central axis of the noise reduction structure 3 is parallel to a central axis of the air duct 4, specifically, the central axis of the noise reduction structure 3 is preferably coincident with the central axis of the air duct 4, so that the noise reduction structure 3 and the air duct 4 are concentrically arranged, and the airflow can flow in a direction parallel to the central axis of the air duct 4, so that most of the airflow does not contact with an inner wall of the air duct 4 when flowing in the air duct 4, thereby reducing frictional resistance of the airflow, reducing noise, reducing turbulence, improving flow efficiency of the airflow, and reducing noise generated by turbulence; meanwhile, the positioning and installation of the noise reduction structure 3 and the air duct 4 are facilitated.

As shown in fig. 4, the air duct 4 includes a first shell 41 and a second shell 42 which are separated along an axial direction thereof, the noise reduction structure 3 is integrally connected with the first shell 41 and detachably connected with the second shell 42, specifically, the noise reduction structure 3 is integrally connected with the first shell 41 of the air duct 4, the integral connection may be manufactured as an integral body, or the two are fixed by a connection structure so that the two can be detached and assembled together, so that a connection gap between the noise reduction structure 3 and the first shell 41 is minimized or even disappeared, the noise reduction structure 3 and the first shell 41 can be stably maintained at a designated installation position, the assembly or the disassembly is more convenient, when an air flow passes through the noise reduction structure 3, the air flow loss is reduced, and noise is reduced, and user experience is improved; the air duct 4 is divided into a structure formed by the first shell 41 and the second shell 42 in a detachable mode, other structural parts can be conveniently installed in the air duct 4, the assembly is more convenient, the detachable mode is the conventional detachable mode, such as a buckle, a plug, a screw and the like, the preferred second shell 42 can be formed into the shell 1 of the hair care appliance, the first shell 41 is directly detachably connected with the shell 1 in a matched mode, the connecting structure is reduced, the assembly is simpler and more convenient, and the structural stability is better.

It can be understood that, when the second shell 42 and the housing 1 are not the same structural member, the second shell 42 and the housing 1 may be integrally connected after being fixed, or both may be integrally formed, so as to achieve the above advantages.

It is understood that the second shell 42 may be a separate structural member, such that the housing 1 is disposed outside the integral member formed by the first shell 41 and the second shell 42 after the second shell 42 is connected with the first shell 41.

The noise reduction structure 3 is made of a nylon material, and particularly, due to the excellent physical characteristics of the nylon material, such as smooth surface and low friction coefficient of a nylon product, when an airflow flows through the noise reduction structure 3, the friction to the airflow is low, so that the airflow flows through the noise reduction structure 3 more smoothly, and the noise generated by the airflow due to friction is reduced; meanwhile, the nylon material is lighter in weight, so that the whole machine is lighter, user experience is better, and certainly, considering that the noise reduction structure 3 needs to be frequently penetrated by air flow, the noise reduction structure 3 needs to have specific performance, some additives can be added into the nylon material to form the material of the noise reduction structure 3, so that the noise reduction structure 3 can obtain certain performance, such as heat resistance, rigidity increase and the like.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, and improvements made within the technical scope of the present invention are included in the protection scope of the present invention.

Claims (10)

1. A noise reducing hair care appliance comprising a housing defining an airflow path therein, a fan unit disposed in the airflow path, an airflow outlet arranged downstream of the airflow path for discharging an airflow, an airflow inlet arranged upstream of the airflow path for entry of an airflow, the fan unit causing an airflow to enter the airflow path from the airflow inlet and to be discharged from the airflow outlet,

the fan unit is characterized in that the airflow passage comprises a noise reduction structure for reducing airflow flowing noise, airflow flows to the airflow outlet through the noise reduction structure and the fan unit, the distance between the end part of the fan unit and the noise reduction structure is H, and H is larger than or equal to 1mm and smaller than or equal to 10 mm.

2. The noise reducing hair care appliance of claim 1, wherein the noise reducing structure is located upstream of the fan unit, the fan unit includes fan blades and a housing wall surrounding the fan blades, the housing wall defines an airflow passage therein, airflow entering the airflow passage from the airflow inlet passes through the noise reducing structure and enters the airflow passage, the fan unit further includes a damping sleeve disposed outside the housing wall and protruding from an end of the housing wall, and a lower end of the damping sleeve is provided with a rounded corner.

3. A noise reducing hair care appliance as claimed in claim 2, wherein the spacing between the end of the housing wall and the noise reducing structure is H and the spacing between the end of the damping sleeve and the noise reducing structure is H, wherein H is 1mm ≦ 6.5 mm.

4. A noise reducing hair care appliance as claimed in claim 2, wherein the chamfer of the lower end of the damping sleeve is R, wherein R is 1 ° or more and 90 ° or less.

5. A noise reducing hair care appliance as claimed in claim 1, wherein the central axis of the fan unit is parallel to the central axis of the noise reducing structure.

6. A noise reducing hair care appliance as claimed in claim 1, wherein the noise reducing structure has a plurality of flow directing holes for air flow therethrough, the flow directing holes having a first hole adjacent the fan unit and a second hole adjacent the air flow inlet, the area of the first hole being greater than or equal to the area of the second hole.

7. The noise reducing hair care appliance of claim 1, wherein the housing includes an air duct defining the air flow passage, the noise reducing structure being integrally connected to the air duct.

8. The noise reducing hair care appliance of claim 7, wherein the central axis of the noise reducing structure is parallel to the central axis of the air duct.

9. The noise reducing hair care appliance of claim 7, wherein the air duct includes a first shell and a second shell that are separated along an axial direction thereof, and the noise reducing structure is integrally connected to the first shell and detachably connected to the second shell.

10. A noise reducing hair care appliance as claimed in any one of claims 1 to 9, wherein the noise reducing structure is of nylon material.

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