Hair dryer

Abstract

The application relates to an electric hair dryer, comprising: a shell assembly, the shell assembly being provided with a first mounting cavity, an air inlet and an air outlet; an air duct assembly, the air duct assembly being located in the first mounting cavity, the air duct assembly being provided with an air inlet hole, the air duct assembly being provided with a first annular air duct and a second annular air duct, the air inlet hole being located on the inner side of the first annular air duct, the second annular air duct being located on the outer side of the first annular air duct, the air inlet, the first mounting cavity, the air inlet hole, the first annular air duct, the second annular air duct and the air outlet being sequentially communicated; a heating assembly, the heating assembly being located in the second annular air duct; and a motor assembly, at least part of the motor assembly being located in the air inlet hole. The electric hair dryer disclosed in the application is characterized in that the air inlet hole of the air duct assembly is located on the inner side of the first annular air duct, the second annular air duct is located on the outer side of the first annular air duct, and the motor assembly and the heating assembly are respectively located in the air inlet hole and the second annular air duct, so that the transverse space can be fully utilized, and the length of the shell assembly is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an electric hair dryer. BACKGROUND

[0002] Electric hair dryer is one of the indispensable small household appliances for beauty care in life. Electric hair dryer is mainly used for drying and shaping hair, and can also be used for drying and beauty care in other aspects. The traditional electric hair dryer comprises a barrel and a handle. The rear end of the barrel is provided with an air inlet, and the front end of the barrel is provided with an air outlet. A channel is arranged in the barrel and communicates with the air inlet and the air outlet. A heating assembly is arranged in the channel. When the gas flows through the heating assembly, heat exchange is generated between the gas and the heating assembly, so that the electric hair dryer blows hot air.

[0003] The heating assembly, the fan assembly and the control panel of the existing electric hair dryer are mostly installed in the barrel and arranged in sequence along the length direction of the barrel, so that the volume of the barrel body is large, the use is not convenient, and the barrel body is not easy to store. At the same time, the heating assembly in the electric hair dryer is located at the front side of the barrel and has a large mass, so that the center of gravity of the electric hair dryer is forward, and when the user holds the electric hair dryer, the electric hair dryer will be inclined forward, which affects the user's use feeling. SUMMARY

[0004] Therefore, it is necessary to provide an electric hair dryer aiming at the problems that the volume of the barrel body is large, the use is not convenient, and the barrel body is not easy to store.

[0005] An electric hair dryer comprises a shell assembly, an air duct assembly, a heating assembly and a motor assembly. The shell assembly is provided with a first installation cavity, an air inlet and an air outlet. The first installation cavity communicates with the air inlet and the air outlet respectively. The air duct assembly is arranged on the shell assembly and located in the first installation cavity. The air duct assembly is provided with an air inlet hole, a first annular air duct and a second annular air duct. The air inlet hole is located at the inner side of the first annular air duct, and the second annular air duct is located at the outer side of the first annular air duct. The air inlet, the first installation cavity, the air inlet hole, the first annular air duct, the second annular air duct and the air outlet are sequentially communicated. The heating assembly is arranged on the air duct assembly and located in the second annular air duct. The motor assembly is arranged on the air duct assembly, at least part of the motor assembly is located in the air inlet hole, and the motor assembly generates negative pressure in the air duct assembly.

[0006] The application discloses an electric hair dryer, a wind channel assembly is provided with an air inlet hole, a first annular wind channel and a second annular wind channel, the air inlet hole is located at the inner side of the first annular wind channel, the second annular wind channel is located at the outer side of the first annular wind channel, the air inlet, a first installation cavity, the air inlet hole, the first annular wind channel, the second annular wind channel and an air outlet are sequentially communicated, a motor assembly and a heating assembly are respectively located in the air inlet hole and the second annular wind channel, by adopting the above structure, the fan assembly can be arranged at the inner side of the heating assembly, so that the transverse space can be fully utilized, the length of the shell assembly is reduced, and meanwhile, the second annular wind channel is arranged to form an air heat insulation layer, so that the influence of the heating assembly temperature rise on the fan assembly can be avoided.

[0007] In one of the embodiments, the wind channel assembly comprises an outer shell and an inner shell, the outer shell is provided with a first cavity, the outer shell is provided with an opening, the opening is communicated with the first cavity, the bottom wall of the outer shell is formed with an air inlet column on the side facing the opening, the air inlet column is provided with the air inlet hole, at least part of the inner shell extends into the first cavity through the opening, the inner shell is sleeved on the outer side of the air inlet column, the inner wall of the inner shell and the air inlet column form a distribution cavity and the first annular wind channel, the side wall of the inner shell and the side wall of the outer shell form the second annular wind channel, and the air inlet hole, the distribution cavity, the first annular wind channel and the second annular wind channel are sequentially communicated. By adopting the above structure, the air inlet column is formed on the bottom wall of the outer shell towards the opening, the air inlet column and the inner wall of the outer shell form the annular first cavity, the air inlet column is provided with the air inlet hole, when the inner shell is sleeved on the outer side of the air inlet column, the inner shell and the outer shell cooperate to separate the annular first cavity into the distribution cavity, the first annular wind channel and the second annular wind channel, the first annular wind channel is located at the inner side of the second annular wind channel, the air inlet hole, the distribution cavity, the first annular wind channel and the second annular wind channel are sequentially communicated, and by adopting the above structure, the multi-layer wind channel can be formed, the motor assembly and the heating assembly can be arranged at the inner side and the outer side of the wind channel respectively, and the transverse space can be fully utilized.

[0008] In one of the embodiments, the bottom wall of the outer shell is formed with a plurality of protrusions on the side facing the inner shell, the plurality of protrusions are distributed along the circumferential direction of the outer shell, the plurality of protrusions abut against the peripheral wall of the inner shell, the peripheral wall of the inner shell and the bottom wall of the outer shell form an air passing gap, and the first annular wind channel is communicated with the second annular wind channel through the air passing gap. The protrusions are formed on the bottom wall of the outer shell and used for abutting against the peripheral wall of the inner shell, so that the air passing gap can be formed between the bottom wall of the outer shell and the peripheral wall of the inner shell, the air passing gap is located away from the distribution cavity, and the air flow can fully flow through the second annular wind channel to form the air heat insulation layer.

[0009] In one of the embodiments, the inner shell comprises an inner shell body and an end cover, the inner shell body is a hollow column, the inner shell body is sleeved outside the air inlet column, the end cover is arranged on the side of the inner shell body away from the air inlet column, the end cover and the peripheral wall of the inner shell body away from the air inlet column form the air distribution cavity, the peripheral wall of the inner shell body and the peripheral wall of the air inlet column form the first annular air duct, and the peripheral wall of the inner shell body and the peripheral wall of the outer shell form the second annular air duct. By adopting the above structure, after the air flow enters the air distribution cavity through the air inlet hole, the air flow collides with the end cover and other structures to change the flow direction and then flows into the first annular air duct and the second annular air duct in sequence.

[0010] In one of the embodiments, the peripheral wall of the inner shell abuts against the bottom wall of the outer shell, the side of the peripheral wall of the inner shell close to the bottom wall of the outer shell is provided with air passing holes, the number of the air passing holes is multiple, the multiple air passing holes are distributed along the circumferential direction of the inner shell, and the first annular air duct communicates with the second annular air duct through the multiple air passing holes.

[0011] In one of the embodiments, the side of the bottom wall of the outer shell facing the inner shell forms a limiting protrusion, and the side of the peripheral wall of the inner shell facing the bottom wall of the outer shell is formed with a first limiting groove matched with the limiting protrusion. By forming the limiting protrusion and the first limiting groove matched with each other on the outer shell and the inner shell respectively, the first limiting groove can limit and position the limiting protrusion, so that the outer shell and the inner shell can be quickly aligned when connected, the installation speed is improved, the connection is more firm, and the installation of the internal components such as the heating assembly is more stable.

[0012] In one of the embodiments, the side of the peripheral wall of the outer shell away from the second annular air duct is formed with buckles, the number of the buckles is multiple, the multiple buckles are distributed along the circumferential direction of the outer shell, and the side wall of the shell assembly facing the outer shell is formed with buckle grooves matched with the buckles. By adopting the above structure, the positioning and installation of the air duct assembly can be facilitated, the installation and dismounting of the air duct assembly can be more convenient and fast through the buckle connection mode, tools are not needed, and the assembly efficiency is improved.

[0013] In one of the embodiments, the end cover is connected with the side wall of the inner shell body through an arc surface. By adopting the arc surface connection structure, the air flow at the transition can flow smoothly, the change degree of the air flow velocity at the transition is reduced, and the noise is reduced.

[0014] In one of the embodiments, the side of the end cover facing the air distribution cavity is formed with a convex column, and the central axis of the convex column overlaps with the central axis of the air inlet hole. By adopting the above structure, the convex column meets the air flow entering the air duct assembly through the air inlet hole and makes the air flow enter the first annular air duct from different directions, so that the distribution efficiency is improved and the air flow flows uniformly.

[0015] In one of the embodiments, the heating assembly comprises a bracket and an electric heating wire, the bracket is arranged on the outer shell and / or the inner shell, the bracket is located in the second annular air duct, the bracket is annular, the bracket is provided with a second cavity, the second cavity is communicated with the second annular air duct, a plurality of limiting plates are formed on the side wall of the bracket towards the inner shell, the limiting plates are distributed on the side wall of the bracket at intervals, the number of the electric heating wires is plural, two adjacent limiting plates are connected by the electric heating wires, and the electric heating wires are located in the second cavity. By adopting the above structure, the electric heating wires can be uniformly arranged in the inside of the annular bracket, so that the air flow at each position of the second annular air duct can be fully contacted with the electric heating wires, and the heat exchange efficiency is improved.

[0016] In one of the embodiments, a plurality of first mounting grooves are formed on the side wall of the inner shell towards the second annular air duct, the first mounting grooves are distributed on the side wall of the inner shell at intervals, and the first mounting grooves are matched with the limiting plates. By adopting the above structure, a mounting space can be formed for the connection of the bracket and the inner shell, the first mounting grooves limit the limiting plates, the heating assembly can be stably arranged in the second annular air duct, the possibility of loosening and damage of the heating assembly under impact can be reduced, and the stable work of the heating assembly can be ensured.

[0017] In one of the embodiments, a plurality of air guide ribs are formed on the side wall of the inner shell towards the second annular air duct, the air guide ribs are arranged along the axis direction of the inner shell, the number of the air guide ribs is plural, the first mounting grooves are formed between two adjacent air guide ribs, two adjacent air guide ribs form a group, and a plurality of groups of air guide ribs are distributed on the side wall of the inner shell at intervals. By arranging the air guide ribs, the air flow can be more orderly guided to the air outlet of the air outlet cover, meanwhile, two adjacent air guide ribs can form the first mounting grooves, the limiting plates on the heating assembly are matched and arranged in the first mounting grooves, the first mounting grooves limit the limiting plates, and the air flow in the second annular air duct can be fully contacted with the heating assembly.

[0018] In one of the embodiments, the shell assembly comprises a wind tube and a handle, the wind tube is provided with the first mounting cavity, the wind tube is provided with the air outlet, the handle is arranged on the side wall of the wind tube, the handle is provided with the air inlet, and the air duct assembly is arranged on the wind tube. By adopting the above structure, the air inlet arranged on the handle can simplify the structure of the wind tube, improve the design space by reducing the volume of the wind tube, and reduce the risk of hair being sucked into the hair dryer.

[0019] In one of the embodiments, the air duct comprises an air duct body and an air outlet cover, the air duct body is provided with the first mounting cavity, the air duct body is provided with a first mounting opening, the first mounting opening is communicated with the first mounting cavity, the air outlet cover is arranged on the first mounting opening, the air outlet cover is abutted with the air duct assembly, the air outlet cover is provided with the air outlet, and the air outlet is oppositely arranged with the second annular air duct. By adopting the above structure, the air outlet cover is abutted with the air duct assembly, the air outlet end of the second annular air duct is tightly connected with the air outlet cover, so that the air flow of the second annular air duct can be fully discharged from the air outlet to the outside of the machine body without leakage.

[0020] In one of the embodiments, the number of the air outlets is multiple, and the multiple air outlets are combined to form an annular air outlet end. By arranging the annular air outlet structure, the air outlet area can be reduced to increase the air outlet speed and the air volume.

[0021] In one of the embodiments, the inner side wall of the air outlet cover extends from the air outlet to the peripheral wall of the air duct assembly, and the vertical distance between the inner side wall and the central axis of the air outlet cover is gradually increased. By adopting the above structure, when the air flow flows through the inner side wall of the air outlet cover, the air flow will naturally flow to the air outlet due to the wall attachment effect, so that the collision noise is reduced.

[0022] In one of the embodiments, the side of the air outlet cover facing the air duct assembly is provided with a first connecting hole, the air duct assembly is provided with a second connecting hole, and the second connecting hole is oppositely arranged with the first connecting hole. By arranging the connecting holes on the air outlet cover and the end cover, the air duct assembly can be stably assembled with the air outlet cover by using the screw connection mode.

[0023] In one of the embodiments, the air duct further comprises a rear cover, the air duct body is provided with a second mounting opening on the side away from the first mounting opening, and the rear cover is arranged on the second mounting opening. By arranging the detachable rear cover, the assembly of the air duct assembly and other parts of the hair dryer can be facilitated

[0024] In one of the embodiments, the inner shell body is provided with a limiting part on the side away from the air inlet column, and the limiting part is matched with the air outlet cover. By arranging the limiting part, the end cover and the air outlet cover of the hair dryer can be positioned and installed, so that the second annular air duct can be better aligned with the air outlet, and the installation efficiency is improved.

[0025] In one of the embodiments, the limiting part is formed with a second limiting groove on the side away from the air inlet column, and the second limiting groove is matched with the air outlet cover.

[0026] In one of the embodiments, the side wall of the limiting part extends away from the inner shell body from the connection position thereof with the inner shell body and the vertical distance of the side wall from the central axis of the inner shell body is gradually increased. By adopting the above structure, when the air flow flows through the side wall of the limiting part, the air flow will naturally flow to the air outlet of the hair dryer due to the wall attachment effect, and the collision noise is reduced.

[0027] In one of the embodiments, the convex column is provided with the second connecting hole.

[0028] In one of the embodiments, the handle further comprises a handle body and an air inlet cover, the handle body is provided with a second mounting cavity, the driving assembly is arranged on the handle body and at least part of the driving assembly is located in the second mounting cavity, the air inlet cover is arranged on the handle body, the air inlet cover is provided with the air inlet, and the air inlet, the second mounting cavity, the first mounting cavity and the air inlet hole are sequentially communicated. By adopting the above structure, the driving assembly is arranged in the second mounting cavity, on the one hand, the internal components of the air duct can be simplified, and the volume of the air duct can be further reduced, and on the other hand, the working heat of the driving assembly can be taken away by the air flow entering through the air inlet and flowing through the second mounting cavity, so that the heat dissipation effect is formed, and the driving assembly can work more stably.

[0029] In one of the embodiments, the handle further comprises a filter assembly, the filter assembly is arranged on the handle body or the air inlet cover, and the filter assembly is located in the second mounting cavity.

[0030] In one of the embodiments, the motor assembly comprises a motor body and a limiting cover, the limiting cover is arranged on the air duct assembly, the motor body is arranged on the limiting cover, and the motor body is matched with the air inlet hole. By arranging the limiting cover, the motor body can be stably arranged in the air inlet hole.

[0031] In one of the embodiments, the handle further comprises a negative ion assembly, a second mounting groove is formed on the side of the air duct assembly away from the air outlet, and the negative ion assembly is matched with the second mounting groove. By arranging the second mounting groove, the mounting space is formed on the air duct assembly to stably arrange the negative ion assembly, so that the internal structure is compact and the space utilization rate can be effectively improved. By arranging the negative ion assembly, the negative ions can be continuously released during use, the positive charges on the hair are neutralized, and the effect of smoothing the hair is achieved.

[0032] In one of the embodiments, the handle further comprises a plasma assembly, a third mounting groove is formed on the side of the outer shell away from the air outlet, and the plasma assembly is matched with the third mounting groove. By arranging the third mounting groove, the mounting space is formed on the air duct assembly to stably arrange the plasma assembly, and by arranging the negative ion assembly, the air entering the hair dryer can be further purified. Attached Figure Description

[0033] Figure 1 A perspective view of a hair dryer according to one embodiment;

[0034] Figure 2 A cross-sectional view of a hair dryer according to one embodiment;

[0035] Figure 3 A first partial cross-sectional view of a hair dryer according to one embodiment;

[0036] Figure 4 A second partial cross-sectional view of a hair dryer according to one embodiment;

[0037] Figure 5 An exploded view of one embodiment of a hair dryer;

[0038] Figure 6 A perspective view of an air duct assembly according to one embodiment;

[0039] Figure 7 A first cross-sectional view of a duct assembly according to one embodiment;

[0040] Figure 8 A second cross-sectional view of a duct assembly according to one embodiment;

[0041] Figure 9 A first perspective view of the inner shell according to one embodiment;

[0042] Figure 10 A second perspective view of the inner shell according to one embodiment;

[0043] Figure 11 A first perspective view of the outer casing according to one embodiment;

[0044] Figure 12 A second perspective view of the casing according to one embodiment;

[0045] Figure 13 This is a perspective view of a motor assembly according to one embodiment.

[0046] The correspondence between the reference numerals and the component names is as follows:

[0047] 1. Housing assembly, 101. First mounting cavity, 102. Air inlet, 103. Air outlet, 104. Second mounting cavity, 11. Air duct, 111. Air duct body, 112. Air outlet cover, 113. Rear cover, 12. Handle, 121. Handle body, 122. Air inlet cover;

[0048] 2 air duct assembly, 201 air inlet hole, 202 first annular air duct, 203 second annular air duct, 204 air distribution cavity, 205 air passing gap, 206 first limiting groove, 207 second connecting hole, 208 second limiting groove, 209 first mounting slot, 2091 second mounting slot, 2092 third mounting slot, 21 outer shell, 211 air inlet column, 212 protrusion, 213 limiting protrusion, 214 buckle, 22 inner shell, 221 inner shell body, 222 end cover, 223 air guide rib, 224 limiting portion;

[0049] 3 heating assembly, 31 support, 32 electric heating wire;

[0050] 4 motor assembly, 41 motor body, 42 limiting cover;

[0051] 5 driving assembly;

[0052] 6 filtering assembly;

[0053] 7 negative ion assembly;

[0054] 8 plasma assembly. DETAILED DESCRIPTION

[0055] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0056] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other manners different from those described herein. Therefore, the scope of the present application is not limited to the specific embodiments disclosed below.

[0057] Some embodiments of the present application are described below with reference to the accompanying drawings.

[0058] As Figures 1 to 5As shown, the embodiment discloses a hair dryer, comprising: a shell assembly 1, the shell assembly 1 is provided with a first installation cavity 101, the shell assembly 1 is provided with an air inlet 102 and an air outlet 103, the first installation cavity 101 is communicated with the air inlet 102 and the air outlet 103 respectively; an air duct assembly 2, the air duct assembly 2 is arranged on the shell assembly 1, the air duct assembly 2 is located in the first installation cavity 101, the air duct assembly 2 is provided with an air inlet hole 201, the air duct assembly 2 is provided with a first annular air duct 202 and a second annular air duct 203, the air inlet hole 201 is located on the inner side of the first annular air duct 202, the second annular air duct 203 is located on the outer side of the first annular air duct 202, the air inlet 102, the first installation cavity 101, the air inlet hole 201, the first annular air duct 202, the second annular air duct 203 and the air outlet 103 are communicated in sequence; a heating assembly 3, the heating assembly 3 is arranged on the air duct assembly 2, the heating assembly 3 is located in the second annular air duct 203; a motor assembly 4, the motor assembly 4 is arranged on the air duct assembly 2, at least part of the motor assembly 4 is located in the air inlet hole 201, the motor assembly 4 generates negative pressure in the air duct assembly 2.

[0059] The application discloses a hair dryer, the air duct assembly 2 is provided with an air inlet hole 201, a first annular air duct 202 and a second annular air duct 203, the air inlet hole 201 is located on the inner side of the first annular air duct 202, the second annular air duct 203 is located on the outer side of the first annular air duct 202, the air inlet 102, the first installation cavity 101, the air inlet hole 201, the first annular air duct 202, the second annular air duct 203 and the air outlet 103 are communicated in sequence, the motor assembly 4 and the heating assembly 3 are located in the air inlet hole 201 and the second annular air duct 203 respectively, by adopting the above structure, the fan assembly can be arranged on the inner side of the heating assembly, so that the transverse space can be fully utilized, the length of the shell assembly 1 is reduced, and the air heat insulation layer can be formed by arranging the second annular air duct 203, so that the influence of the heating assembly on the fan assembly caused by heating can be avoided.

[0060] As Figure 3 , Figure 6 and Figure 7As shown, in addition to the features of the above embodiments, this embodiment further defines: the air duct assembly 2 includes an outer shell 21 and an inner shell 22. The outer shell 21 is provided with a first cavity and an opening that communicates with the first cavity. An air inlet column 211 is formed on the side of the bottom wall of the outer shell 21 facing the opening. The air inlet column 211 has an air inlet hole 201. At least a portion of the inner shell 22 extends into the first cavity through the opening. The inner shell 22 is fitted on the outside of the air inlet column 211. The inner wall of the inner shell 22 and the air inlet column 211 enclose each other to form an air distribution cavity 204 and a first annular air duct 202. The side wall of the inner shell 22 and the side wall of the outer shell 21 enclose each other to form a second annular air duct 203. The air inlet hole 201, the air distribution cavity 204, the first annular air duct 202 and the second annular air duct 203 are connected in sequence. By adopting the above structure, an air inlet column 211 is formed on the bottom wall of the outer shell 21 facing its opening direction. The air inlet column 211 and the inner wall of the outer shell 21 enclose an annular first cavity. The air inlet column 211 is provided with a through air inlet hole 201. When the inner shell 22 is fitted on the outside of the air inlet column 211, the inner shell 22 and the outer shell 21 cooperate to divide the annular first cavity into an air distribution cavity 204, a first annular air duct 202 and a second annular air duct 203. The first annular air duct 202 is located inside the second annular air duct 203. The air inlet hole 201, the air distribution cavity 204, the first annular air duct 202 and the second annular air duct 203 are connected in sequence. By adopting the above structure, a multi-layered air duct can be formed, which makes it convenient to set the motor assembly 4 and the heating assembly on the inner and outer sides of the air duct respectively, making full use of the lateral space.

[0061] like Figure 7 , Figure 8 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a protrusion 212 is formed on the side of the bottom wall of the outer shell 21 facing the inner shell 22, and the number of protrusions 212 is multiple. The multiple protrusions 212 are spaced apart along the circumferential direction of the outer shell 21, and the multiple protrusions 212 abut against the peripheral wall of the inner shell 22. An air passage gap 205 is formed between the peripheral wall of the inner shell 22 and the bottom wall of the outer shell 21. The first annular air duct 202 is connected to the second annular air duct 203 through the air passage gap 205. By forming a protrusion 212 on the bottom wall of the outer shell 21 to abut against the peripheral wall of the inner shell 22, an air passage gap 205 can be formed between the bottom wall of the outer shell 21 and the peripheral wall of the inner shell 22. The air passage gap 205 is located on the side away from the air distribution cavity 204, ensuring that the airflow can fully flow through the second annular air duct 203 to form an air insulation layer.

[0062] like Figure 7 and Figure 9As shown, in addition to the features of the above embodiments, this embodiment further defines: the inner shell 22 includes an inner shell body 221 and an end cap 222. The inner shell body 221 is a hollow column, and is sleeved on the outside of the air inlet column 211. The end cap 222 covers the side of the inner shell body 221 away from the air inlet column 211. The end cap 222 and the peripheral wall of the inner shell body 221 away from the air inlet column 211 enclose to form an air distribution cavity 204. The peripheral wall of the inner shell body 221 and the peripheral wall of the air inlet column 211 enclose to form a first annular air duct 202. A second annular air duct 203 is formed between the peripheral wall of the inner shell body 221 and the peripheral wall of the outer shell 21. By adopting the above structure, after the airflow enters the air distribution cavity 204 through the air inlet hole 201, the airflow collides with the end cap 222 and other structures, changes its flow direction, and flows into the first annular air duct 202 and the second annular air duct 203 in sequence.

[0063] In addition to the features of the above embodiments, this embodiment further specifies that: the peripheral wall of the inner shell 22 abuts against the bottom wall of the outer shell 21, and an air passage is provided on the side of the peripheral wall of the inner shell 22 near the bottom wall of the outer shell 21. There are multiple air passages, which are distributed at intervals along the circumference of the inner shell 22. The first annular air duct 202 is connected to the second annular air duct 203 through the multiple air passages.

[0064] like Figure 8 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a limiting protrusion 213 is formed on the side of the bottom wall of the outer shell 21 facing the inner shell 22, and a first limiting groove 206 adapted to the limiting protrusion 213 is formed on the side of the peripheral wall of the inner shell 22 facing the bottom wall of the outer shell 21. By forming the matching limiting protrusion 213 and the first limiting groove 206 on the outer shell 21 and the inner shell 22 respectively, the first limiting groove 206 can limit and position the limiting protrusion 213, so that the outer shell 21 and the inner shell 22 can be quickly aligned when connected, improving the installation speed and making the connection more secure, thereby making the installation of internal components such as heating components more stable.

[0065] like Figure 11 and Figure 12 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a buckle 214 is formed on the side of the peripheral wall of the outer shell 21 away from the second annular air duct 203, and there are multiple buckles 214, which are spaced apart along the circumference of the outer shell 21. A groove adapted to the buckle 214 is formed on the side wall of the shell assembly 1 facing the outer shell 21. By adopting the above structure, the positioning and installation of the air duct assembly 2 can be facilitated. At the same time, the buckle 214 connection method makes the installation and disassembly of the air duct assembly 2 more convenient and quick, without the need for tools, thus improving assembly efficiency.

[0066] like Figure 7As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced.

[0067] As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced. Figure 7 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced.

[0068] As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced. Figure 4 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced.

[0069] As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced. Figure 4 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced. Figure 10 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced.

[0070] As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced. Figure 4 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: the end cover 222 is connected to the side wall of the inner shell body 221 through an arc surface. By using the arc surface connection structure, the airflow at the transition can flow smoothly, the degree of airflow velocity change at the transition is slowed down, and the noise is reduced. Figure 10As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a guide rib 223 is formed on the side of the inner shell 22 facing the second annular air duct 203. The guide rib 223 is arranged along the axial direction of the inner shell 22, and there are multiple guide ribs 223. A first mounting groove 209 is formed between two adjacent guide ribs 223. Two adjacent guide ribs 223 form a group, and multiple groups of guide ribs 223 are distributed at intervals on the peripheral wall of the inner shell 22. With the arrangement of the guide ribs 223, the airflow can flow more orderly to the air outlet 103 of the air outlet cover 112 under the guidance of the guide ribs 223. At the same time, two adjacent guide ribs 223 can form the first mounting groove 209. The limiting plate on the heating element 3 is adapted to be inserted into the first mounting groove 209. The first mounting groove 209 has a limiting effect on the limiting plate, ensuring that the airflow in the second annular air duct 203 can fully contact the heating element 3.

[0071] like Figure 2 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the housing assembly 1 includes a blower 11 and a handle 12. The blower 11 has a first mounting cavity 101 and an air outlet 103. The handle 12 is disposed on the side wall of the blower 11 and has an air inlet 102. The air duct assembly 2 is disposed on the blower 11. By adopting the above structure, placing the air inlet 102 on the handle 12 simplifies the structure of the blower 11, increases design space for reducing the volume of the blower 11, and also reduces the risk of hair being sucked into the hair dryer by providing the air inlet 102 on the handle 12.

[0072] like Figure 1 , Figure 2 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the air duct 11 includes an air duct body 111 and an air outlet cover 112. The air duct body 111 is provided with a first mounting cavity 101 and a first mounting opening, which communicates with the first mounting cavity 101. The air outlet cover 112 covers the first mounting opening and abuts against the air duct assembly 2. The air outlet cover 112 is provided with an air outlet 103, which is disposed opposite to the second annular air duct 203. By adopting the above structure, the air outlet cover 112 abuts against the air duct assembly 2, and the air outlet end of the second annular air duct 203 is tightly connected to the air outlet cover 112, thereby ensuring that the airflow of the second annular air duct 203 will fully flow out of the air outlet 103 and blow out of the machine body without leakage.

[0073] like Figure 1 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of air outlets 103 is multiple, and the multiple air outlets 103 are combined to form an annular air outlet end. By setting an annular air outlet structure, the air outlet area can be reduced, thereby increasing the air outlet speed and the air volume.

[0074] As shown in Figure 3 addition to the features of the above embodiments, the present embodiment is further defined as: the inner side wall of the air outlet cover 112 extends from the air outlet 103 to the peripheral wall of the air duct assembly 2, and the vertical distance between the inner side wall and the central axis of the air outlet cover 112 becomes larger and larger. By adopting the above structure, when the airflow flows through the inner side wall of the air outlet cover 112, the airflow will naturally flow to the air outlet 103 due to the wall attachment effect, reducing the collision noise.

[0075] As shown in Figure 7 addition to the features of the above embodiments, the present embodiment is further defined as: the air outlet cover 112 is provided with a first connecting hole on the side facing the air duct assembly 2, and the air duct assembly 2 is provided with a second connecting hole 207, which is arranged opposite to the first connecting hole. By providing connecting holes on the air outlet cover 112 and the end cover 222, the air duct assembly 2 can be stably assembled with the air outlet cover 112 by screw connection.

[0076] As shown in Figure 5 addition to the features of the above embodiments, the present embodiment is further defined as: the air duct 11 further comprises a rear cover 113, and the air duct body 111 is provided with a second mounting hole on the side away from the first mounting hole, and the rear cover 113 covers the second mounting hole. By providing a detachable rear cover 113, the assembly of the air duct assembly 2 and other parts of the hair dryer is facilitated

[0077] As shown in Figure 3 and Figure 7 addition to the features of the above embodiments, the present embodiment is further defined as: the inner shell body 221 is provided with a limiting portion 224 on the side away from the air inlet column 211, and the limiting portion 224 is matched with the air outlet cover 112. By providing the limiting portion 224, the end cover 222 and the air outlet cover 112 of the hair dryer can be positioned and installed, so that the second annular air duct 203 can be better aligned with the air outlet 103, improving the installation efficiency.

[0078] As shown in Figure 3 and Figure 7 addition to the features of the above embodiments, the present embodiment is further defined as: the limiting portion 224 is formed with a second limiting groove 208 on the side away from the air inlet column 211, and the second limiting groove 208 is matched with the air outlet cover 112.

[0079] As shown in Figure 3 and Figure 7As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the sidewall of the limiting part 224 extends away from the inner shell body 221 from its connection point with the inner shell body 221, and its vertical distance from the central axis of the inner shell body 221 increases. By adopting the above structure, when the airflow flows through the sidewall of the limiting part 224, due to the wall adhesion effect, the airflow will naturally flow towards the air outlet 103 of the hair dryer, reducing collision noise.

[0080] like Figure 7 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the protruding post has a second connecting hole 207.

[0081] like Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further includes a drive assembly 5. The handle 12 includes a handle body 121 and an air inlet cover 122. The handle body 121 has a second mounting cavity 104. The drive assembly 5 is disposed on the handle body 121, with at least a portion of the drive assembly 5 located within the second mounting cavity 104. The air inlet cover 122 covers the handle body 121 and has an air inlet 102. The air inlet 102, the second mounting cavity 104, the first mounting cavity 101, and the air inlet hole 201 are sequentially connected. By adopting the above structure, the drive assembly 5 is disposed within the second mounting cavity 104. On the one hand, this simplifies the internal components of the air duct 11 and further reduces the volume of the air duct 11. On the other hand, the airflow entering through the air inlet 102 and flowing through the second mounting cavity 104 can carry away the working heat of the drive assembly 5, forming a heat dissipation effect, which can make the operation of the drive assembly 5 more stable.

[0082] like Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further includes a filter assembly 6, which is disposed on the handle 121 or the air inlet cover 122, and is located in the second mounting.

[0083] like Figure 3 and Figure 13 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the motor assembly 4 includes a motor body 41 and a limiting cover 42. The limiting cover 42 is disposed on the air duct assembly 2, and the motor body 41 is disposed on the limiting cover 42. The motor body 41 is adapted to the air inlet 201. By providing the limiting cover 42, the motor body 41 can be stably disposed within the air inlet 201.

[0084] like Figure 5 and Figure 12As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: further comprising a negative ion assembly 7, the air duct assembly 2 is formed with a second mounting groove 2091 on the side away from the air outlet 103, and the negative ion assembly 7 is adapted to the second mounting groove 2091. The second mounting groove 2091 can form a mounting space on the air duct assembly 2 to stably set the negative ion assembly 7, so that the internal structure is compact and the space utilization can be effectively improved. By installing the negative ion assembly 7, negative ions are continuously released during use, neutralizing the positive charge on the hair, and achieving the effect of smoothing and softening the hair.

[0085] As shown in the drawings, Figure 5 and Figure 12 As shown in the drawings, in addition to the features of the above embodiments, the present embodiment is further defined as: further comprising a negative ion assembly 7, the air duct assembly 2 is formed with a second mounting groove 2091 on the side away from the air outlet 103, and the negative ion assembly 7 is adapted to the second mounting groove 2091. The second mounting groove 2091 can form a mounting space on the air duct assembly 2 to stably set the negative ion assembly 7, so that the internal structure is compact and the space utilization can be effectively improved. By installing the negative ion assembly 7, negative ions are continuously released during use, neutralizing the positive charge on the hair, and achieving the effect of smoothing and softening the hair.

[0086] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0087] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. An electric hair dryer, characterized by comprising: The utility model relates to a kind of electric hair dryer, including: Shell assembly (1), the shell assembly (1) is equipped with first installation cavity (101), the shell assembly (1) is equipped with air inlet (102) and air outlet (103), the first installation cavity (101) is communicated with air inlet (102) and air outlet (103) respectively; Air duct assembly (2), the air duct assembly (2) is arranged on the shell assembly (1), and the air duct assembly (2) is located in the first installation cavity (101), and the air duct assembly (2) is equipped with air inlet hole (201), and the air duct assembly (2) is equipped with first annular air duct (202) and second annular air duct (203), the air inlet hole (201) is located in the inner side of the first annular air duct (202), the second annular air duct (203) is located in the outer side of the first annular air duct (202), air inlet (102), the first installation cavity (101), the air inlet hole (201), the first annular air duct (202), the second annular air duct (203) and air outlet (103) are sequentially communicated; Heating assembly (3), the heating assembly (3) is arranged on the air duct assembly (2), and the heating assembly (3) is located in the second annular air duct (203); Motor assembly (4), the motor assembly (4) is arranged on the air duct assembly (2), and at least part of the motor assembly (4) is located in the air inlet hole (201), and the motor assembly (4) generates negative pressure in the air duct assembly (2); The air duct assembly (2) includes shell (21) and inner shell (22), the shell (21) is equipped with first cavity, the shell (21) is equipped with opening, the opening is communicated with the first cavity, the bottom wall of the shell (21) is formed with air inlet column (211) to the side of opening, the air inlet column (211) is equipped with air inlet hole (201), at least part of the inner shell (22) passes through the opening and extends into the first cavity, the inner shell (22) is sleeved on the outer side of the air inlet column (211), the inner wall of the inner shell (22) and the air inlet column (211) form air distribution cavity (204) and the first annular air duct (202) by surrounding, the side wall of the inner shell (22) and the side wall of the shell (21) form the second annular air duct (203) by surrounding, the air inlet hole (201), air distribution cavity (204), the first annular air duct (202) and the second annular air duct (203) are sequentially communicated.

2. The electric hair dryer according to claim 1, wherein The bottom wall of the outer shell (21) is formed with a plurality of protrusions (212) on the side facing the inner shell (22), the plurality of protrusions (212) are distributed along the circumferential direction of the outer shell (21), the plurality of protrusions (212) abut against the peripheral wall of the inner shell (22), the peripheral wall of the inner shell (22) and the bottom wall of the outer shell (21) form an air gap (205), and the first annular air duct (202) communicates with the second annular air duct (203) through the air gap (205); and / or The inner shell (22) comprises an inner shell body (221) and an end cover (222), the inner shell body (221) is a hollow column, the inner shell body (221) is sleeved on the outer side of the air inlet column (211), the end cover (222) is arranged on the side of the inner shell body (221) away from the air inlet column (211), the end cover (222) and the peripheral wall of the inner shell body (221) away from the air inlet column (211) form the air distribution cavity (204), the peripheral wall of the inner shell body (221) and the peripheral wall of the air inlet column (211) form the first annular air duct (202), and the peripheral wall of the inner shell body (221) and the peripheral wall of the outer shell (21) form the second annular air duct (203).

3. The hair dryer according to claim 1, characterized in that The heating assembly (3) comprises a support (31) and an electric heating wire (32), the support (31) is arranged on the outer shell (21) and / or the inner shell (22), the support (31) is located in the second annular air duct (203), the support (31) is annular, the support (31) is provided with a second cavity, the second cavity communicates with the second annular air duct (203), a plurality of limiting plates are formed on the side wall of the support (31) on the side facing the inner shell (22), the plurality of limiting plates are distributed on the side wall of the support (31) at intervals, the number of the electric heating wires (32) is plural, two adjacent limiting plates are connected by the plurality of electric heating wires (32), and the plurality of electric heating wires (32) are located in the second cavity.

4. The hair dryer according to claim 3, characterized in that The peripheral wall of the inner shell (22) is formed with a plurality of first mounting grooves (209) on the side facing the second annular air duct (203), the plurality of first mounting grooves (209) are distributed on the peripheral wall of the inner shell (22) at intervals, and the plurality of first mounting grooves (209) are matched with the plurality of limiting plates.

5. The hair dryer of claim 1, wherein The shell assembly (1) comprises a wind pipe (11) and a handle (12), the wind pipe (11) is provided with the first mounting cavity (101), the wind pipe (11) is provided with the air outlet (103), the handle (12) is arranged on the side wall of the wind pipe (11), the handle (12) is provided with the air inlet (102), and the air duct assembly (2) is arranged on the wind pipe (11).

6. The hair dryer of claim 5, wherein The air duct (11) comprises an air duct body (111) and an air outlet cover (112), the air duct body (111) is provided with the first mounting cavity (101), the air duct body (111) is provided with a first mounting opening, the first mounting opening is communicated with the first mounting cavity (101), the air outlet cover (112) is arranged on the first mounting opening, the air outlet cover (112) is abutted with the air duct assembly (2), the air outlet cover (112) is provided with the air outlet (103), and the air outlet (103) is arranged opposite to the second annular air duct (203).

7. The hair dryer according to claim 6, wherein, the number of the air outlets (103) is multiple, and the multiple air outlets (103) are combined to form an annular air outlet end; and / or an inner side wall of the air outlet cover (112) extends from the air outlet (103) to the peripheral wall of the air duct assembly (2), and the vertical distance between the inner side wall and the central axis of the air outlet cover (112) gradually increases; and / or the air outlet cover (112) is provided with a first connecting hole on one side facing the air duct assembly (2), the air duct assembly (2) is provided with a second connecting hole (207), and the second connecting hole (207) is arranged opposite to the first connecting hole; and / or the air duct (11) further comprises a rear cover (113), and the air duct body (111) is provided with a second mounting opening on a side away from the first mounting opening, and the rear cover (113) is arranged on the second mounting opening.

8. The hair dryer of claim 5, wherein, Further comprising a driving assembly (5), the handle (12) comprises a handle body (121) and an air inlet cover (122), the handle body (121) is provided with a second mounting cavity (104), the driving assembly (5) is arranged on the handle body (121), at least part of the driving assembly (5) is located in the second mounting cavity (104), the air inlet cover (122) is arranged on the handle body (121), the air inlet cover (122) is provided with the air inlet (102), and the air inlet (102), the second mounting cavity (104), the first mounting cavity (101) and the air inlet hole (201) are sequentially communicated.

9. The hair dryer according to claim 1, wherein, the motor assembly (4) comprises a motor body (41) and a limiting cover (42), the limiting cover (42) is arranged on the air duct assembly (2), the motor body (41) is arranged on the limiting cover (42), and the motor body (41) is matched with the air inlet hole (201); and / or further comprising a negative ion assembly (7), one side of the air duct assembly (2) away from the air outlet (103) is formed with a second mounting groove (2091), and the negative ion assembly (7) is matched with the second mounting groove (2091); and / or further comprising a plasma assembly (8), one side of the shell (21) away from the air outlet (103) is formed with a third mounting groove (2092), and the plasma assembly (8) is matched with the third mounting groove (2092).

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