CN219762700U

CN219762700U - Air duct component and hair dryer

Info

Publication number: CN219762700U
Application number: CN202321218598.2U
Authority: CN
Inventors: 别正业; 黄远辉
Original assignee: Guangdong Jinye Meijian Technology Co ltd
Current assignee: Guangdong Jinye Meijian Technology Co ltd
Priority date: 2023-05-19
Filing date: 2023-05-19
Publication date: 2023-09-29
Anticipated expiration: 2033-05-19

Abstract

The utility model relates to an air duct component and an electric hair drier, wherein the air duct component comprises: the shell is provided with a first cavity and an opening, an air inlet column is formed on one side of the bottom wall of the shell facing the opening, and an air inlet hole is formed in the air inlet column; 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 enclose to form a wind distribution cavity and a first annular air channel, the side wall of the inner shell and the side wall of the outer shell enclose to form a second annular air channel, the air inlet hole, the wind distribution cavity, the first annular air channel and the second annular air channel are sequentially communicated, and the second annular air channel is used for installing a heating component. The air duct component disclosed by the utility model is provided with the air inlet hole, the air inlet cavity, the first annular air duct and the second annular air duct are formed by matching the inner shell and the outer shell, and the air inlet hole, the air distribution cavity, the first annular air duct and the second annular air duct are sequentially communicated.

Description

Air duct component and hair dryer

Technical Field

The utility model relates to the technical field of household appliances, in particular to an air duct component and an electric hair drier.

Background

The hair drier is one of the indispensable small household appliances for beauty and care in life, is mainly used for drying and shaping hair, and can also be used for drying and art designing in other aspects. The traditional hairdryer includes organism and handle, and the rear end of organism is provided with the air intake, and the front end of organism is provided with the air outlet, is provided with the passageway of intercommunication air intake and air outlet in the organism, and heating element sets up in the passageway, and when gas flow through heating element, with heating element production heat exchange to can make the hairdryer blow out hot-blast. However, in the existing electric hair drier on the market, the contact time of the air flow and the heating component is short, so that the heat exchange efficiency is low, and the heating power and the structure of the heating component are correspondingly higher to achieve the air outlet temperature, so that the production cost is increased to a certain extent.

Disclosure of Invention

Based on the above, it is necessary to provide an air duct member and an electric hair dryer for solving the problem that the contact time between the air flow and the heating component is short, resulting in low heat exchange efficiency.

An air duct member comprising: the shell is provided with a first cavity, the shell is provided with an opening, the opening is communicated with the first cavity, the bottom wall of the shell extends towards one side of the opening to form an air inlet column, the air inlet column is provided with an air inlet hole, and the air inlet hole is communicated with the first cavity; the inner shell, at least part of inner shell passes the opening stretches into in the first cavity, the inner shell cover is established the outside of air inlet post, the inner wall of inner shell with the air inlet post encloses and closes and form branch wind chamber and first annular wind channel, the lateral wall of inner shell with the lateral wall of shell encloses and closes and form second annular wind channel, the fresh air inlet divide wind chamber first annular wind channel with second annular wind channel communicates in proper order, second annular wind channel is used for the air outlet of intercommunication hairdryer, second annular wind channel is used for installing heating element.

The utility model discloses an air duct member, wherein an air inlet column is formed on the bottom wall of an outer shell towards the opening direction of the air duct member, an annular cavity is formed by enclosing the air inlet column and the inner wall of the outer shell, a through air inlet hole is formed in the air inlet column, when the inner shell is sleeved on the outer side of the air inlet column, the annular cavity is separated into an air cavity, a first annular air duct and a second annular air duct by the cooperation of the inner shell and the outer shell, the first annular air duct is positioned on the inner side of the second annular air duct, the air inlet hole, the air cavity, the first annular air duct and the second annular air duct are sequentially communicated, the air passing duct can be prolonged, and meanwhile, when air enters the air duct member through the air inlet hole and collides with the air duct member for multiple times to change the flowing direction, the flow speed of the air is reduced, so that the contact time of the air and a heating component positioned in the second annular air duct is increased, the heat exchange efficiency of the air flow and the heating component is improved, and the energy-saving effect is achieved.

In one embodiment, a plurality of protrusions are formed on one side of the bottom wall of the outer shell, facing the inner shell, the protrusions are distributed at intervals along the circumferential direction of the outer shell, the protrusions are abutted to the peripheral wall of the inner shell, an air passing gap is formed between the peripheral wall of the inner shell and the bottom wall of the outer shell, and the first annular air channel is communicated with the second annular air channel through the air passing gap. The bulge is formed on the bottom wall of the outer shell and is used for propping against the peripheral wall of the inner shell, so that an 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 positioned at one side far away from the air dividing cavity, airflow enters the second annular air channel from the first annular air channel through collision with the bottom wall of the outer shell to change the flowing direction, the airflow speed can be further reduced, and the time for the airflow to flow through the second annular air channel is prolonged.

In one embodiment, the peripheral wall of the inner shell abuts against the bottom wall of the outer shell, a plurality of air passing holes are formed in one side, close to the bottom wall of the outer shell, of the peripheral wall of the inner shell, the air passing holes are distributed at intervals along the circumferential direction of the inner shell, and the first annular air channel is communicated with the second annular air channel through the air passing holes.

In one embodiment, a limiting protrusion is formed on a side of the bottom wall of the outer shell, which faces the inner shell, and a first limiting groove adapted to the limiting protrusion is formed on a side of the Zhou Bichao of the inner shell, which faces the bottom wall of the outer shell. Through the spacing protruding and first spacing groove structure that forms looks adaptation at shell and inner shell respectively, first spacing recess can be to spacing protruding formation spacing positioning action for quick alignment when shell and inner shell are connected improves installation rate, makes its connection more firm simultaneously, thereby makes the installation of internal components such as heating element of hairdryer more stable.

In one embodiment, a plurality of buckles are formed on one side, far away from the second annular air duct, of the peripheral wall of the shell, the buckles are distributed at intervals along the circumferential direction of the shell, and the buckles are used for being connected with the electric hair drier shell assembly in an adaptive mode. Through adopting above-mentioned structure, can make things convenient for the location installation of wind channel component, simultaneously through buckle connected mode, can make the installation of wind channel component dismantle convenient and fast more, need not to borrow the instrument, improve assembly efficiency.

In one embodiment, 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 on the outer side of the air inlet column, the end cover is arranged on one side, far away from the air inlet column, of the inner shell body, the end cover and the inner shell body are arranged on the periphery wall of the air inlet column in a surrounding mode to form the air distribution cavity, the periphery wall of the inner shell body and the periphery wall of the air inlet column in a surrounding mode to form the first annular air channel, and the second annular air channel is formed between the periphery wall of the inner shell body and the periphery wall of the outer shell. Through adopting above-mentioned structure, after the air current gets into the branch wind chamber through the fresh air inlet, the air current collides with structures such as end cover and changes flow direction and flow into first annular wind channel and second annular wind channel in proper order, and the gas is through reducing rather than collision velocity of flow to make the time that the gas flowed through the wind channel increase, the air current can abundant heat exchange with the heating element who is located the second annular wind channel.

In one embodiment, a convex column is formed on one side of the end cover facing the wind distributing cavity, and the central axis of the convex column is overlapped with the central axis of the air inlet hole. By adopting the structure, the convex column is opposite to the air flow entering the air duct component through the air inlet hole and makes the air flow split into the first annular channel from different directions, thereby improving the split efficiency and enabling the air flow to flow uniformly.

In one embodiment, the connection between the end cover and the inner shell body is in an arc-shaped structure. By adopting the cambered surface connection structure, the airflow at the transition part can flow stably, the change degree of the airflow velocity at the transition part is slowed down, and the noise is reduced.

In one embodiment, the end cover is provided with a connecting hole, and the connecting hole is used for connecting an air outlet shell piece of the electric hair drier. Through set up the connecting hole on the end cover, adopt screw connection mode make wind channel component can stably assemble with the air-out shell piece.

In one embodiment, the connection hole is formed in the protruding column.

In one embodiment, a limiting part is arranged on one side of the inner shell body away from the air inlet column, and the limiting part is used for being installed in an adapting way with an air outlet shell piece of the electric hair drier. The setting through spacing portion can be convenient for through the air-out shell piece location installation of end cover and hairdryer for the air outlet of hairdryer can be better aimed at in the annular wind channel of second, improves installation effectiveness.

In one embodiment, a second limiting groove is formed on one side, far away from the air inlet column, of the limiting portion, and the second limiting groove is used for being installed in an adaptive mode with an air outlet shell piece of the electric hair drier. Through the protruding part adaptation installation on second spacing recess and the hair-dryer air-out shell spare, can make wind channel component and air-out shell spare more stable the connection, be convenient for simultaneously aim at the location, improve installation effectiveness.

In one embodiment, the side wall of the limiting portion extends from the connection position of the limiting portion and the inner shell body to a direction away from the inner shell body, and the vertical distance between the limiting portion and the central axis of the inner shell body is larger. By adopting the structure, when the air flow flows through the side wall of the limiting part, the air flow naturally flows to the air outlet of the electric hair drier due to the wall attaching effect, so that collision noise is reduced.

In one embodiment, the inner housing Zhou Bichao is formed with a plurality of mounting slots on one side of the second annular air duct, the plurality of mounting slots are distributed on the peripheral wall of the inner housing at intervals, and the plurality of mounting slots are used for mounting the heating components of the electric hair dryer. Through adopting above-mentioned structure, can form the installation space and be used for the connection of heating element and wind channel component, the heating element of being convenient for sets up in the annular wind channel of second steadily, can reduce its possibility that takes place to loosen when receiving the impact and take place to take off the damage, ensures that it can last effectively steady operation.

In one embodiment, the inner casing Zhou Bichao is formed with air guide ribs on one side of the second annular air duct, the air guide ribs are arranged along the axial direction of the inner casing, the number of the air guide ribs is multiple, the mounting grooves are formed between two adjacent air guide ribs, the two adjacent air guide ribs are in a group, and multiple groups of air guide ribs are distributed on the peripheral wall of the inner casing at intervals. Through the setting of wind-guiding muscle, the air current can flow to the air outlet of air-out shell spare more orderly under the guide of wind-guiding muscle, and two adjacent wind-guiding muscle can form the mounting groove simultaneously, and the conducting strip on the heating element inserts with the adaptation and establishes in the mounting groove, and the mounting groove forms spacing effect to the conducting strip, ensures that the air current in the second annular wind channel can fully contact with the heating element.

A second aspect of the present utility model discloses a hair dryer.

An electric hair dryer, comprising: the shell assembly is provided with a mounting cavity, the shell assembly is provided with an air inlet and an air outlet, and the mounting cavity is respectively communicated with the air inlet and the air outlet; the air duct component is arranged on the shell component, the air duct component is positioned in the installation cavity, and the air inlet, the air inlet hole, the air distribution cavity, the first annular air duct, the second annular air duct and the air outlet are sequentially communicated; the heating component is arranged on the air duct member and is positioned in the second annular air duct; and the motor assembly is arranged on the air channel member, at least part of the motor assembly is positioned in the mounting cavity, and the motor assembly is used for generating air flow flowing from the air inlet to the air outlet. According to the electric hair drier disclosed by the second aspect of the utility model, through arranging the air duct component of any one of the above, the air duct is separated into the air cavity, the first annular air duct and the second annular air duct through the cooperation of the outer shell and the inner shell, the first annular air duct is positioned on the inner side of the second annular air duct, the air inlet hole of the outer shell is positioned on the inner side of the first annular air duct, the air inlet hole, the air cavity, the first annular air duct and the second annular air duct are sequentially communicated, by adopting the structure, the air passing duct can be prolonged, and meanwhile, when air enters the air duct component through the air inlet hole and collides with the air duct component for multiple times to change the flowing direction, the flow speed of the air is reduced, so that the contact time of the air and a heating component positioned in the second annular air duct is increased, the heat exchange efficiency of the air flow and the heating component is improved, and the energy-saving effect is achieved.

Drawings

FIG. 1 is a perspective view of an air duct member of an embodiment;

FIG. 2 is a first exploded view of an embodiment of an air duct member;

FIG. 3 is a first cross-sectional view of an embodiment of an air duct member;

FIG. 4 is a second exploded view of an embodiment of an air duct member;

FIG. 5 is a second cross-sectional view of an embodiment of an air duct member;

fig. 6 is a cross-sectional view of an electric hair dryer according to an embodiment.

Wherein, the correspondence between the reference numerals and the component names is:

100 air duct components;

1 a shell, 101 an air inlet hole, 11 an air inlet column, 12 a bulge, 13 a limiting bulge and 14 a buckle;

the air guide device comprises a 2 inner shell, a 201 split air cavity, a 202 first annular air channel, a 203 second annular air channel, a 204 wind passing gap, a 205 first limit groove, a 206 connecting hole, a 207 second limit groove, a 208 mounting groove, a 21 inner shell body, a 22 end cover, a 23 limit part and a 24 air guide rib;

200 a housing assembly;

300 a heating assembly;

400 motor assembly.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

The air duct member according to some embodiments of the present utility model is described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 3, the present embodiment discloses an air duct member including: the shell 1, the shell 1 is provided with a first cavity, the shell 1 is provided with an opening, the opening is communicated with the first cavity, the bottom wall of the shell 1 extends towards one side of the opening to form an air inlet column 11, the air inlet column 11 is provided with an air inlet hole 101, and the air inlet hole 101 is communicated with the first cavity; the inner shell 2, at least part of the inner shell 2 passes through the opening and stretches into the first cavity, the outside at the air inlet post 11 is established to the cover of inner shell 2, the inner wall of inner shell 2 encloses with the air inlet post 11 and closes and form branch wind chamber 201 and first annular wind channel 202, the lateral wall of inner shell 2 encloses with the lateral wall of shell 1 and closes and form second annular wind channel 203, the fresh air inlet 101, divide wind chamber 201, first annular wind channel 202 and second annular wind channel 203 communicate in proper order, second annular wind channel 203 is used for the air outlet of intercommunication hairdryer, second annular wind channel 203 is used for installing heating element.

The utility model discloses an air channel member, wherein an air inlet column 11 is formed on the bottom wall of an outer shell 1 towards the opening direction of the air channel member, the air inlet column 11 and the inner wall of the outer shell 1 are enclosed to form an annular cavity, the air inlet column 11 is provided with a through air inlet hole 101, when an inner shell 2 is sleeved outside the air inlet column 11, the inner shell 2 and the outer shell 1 are matched to separate the annular cavity to form an air cavity 201, a first annular air channel 202 and a second annular air channel 203, the first annular air channel 202 is positioned on the inner side of the second annular air channel 203, the air inlet hole 101, the air cavity 201, the first annular air channel 202 and the second annular air channel 203 are sequentially communicated, by adopting the structure, the air channel can be prolonged, and meanwhile, when air enters the air channel member through the air inlet hole 101 and collides with the air channel member for multiple times to change the flowing direction, the flow speed of the air is reduced, so that the contact time of the air and a heating component in the second annular air channel 203 is prolonged, and the heat exchange efficiency of the air and the heating component is improved, and energy-saving effect is achieved.

As shown in fig. 2 and 3, this embodiment further defines, in addition to the features of the above-described embodiment: the bottom wall of the outer shell 1 is provided with a plurality of protrusions 12 towards one side of the inner shell 2, the protrusions 12 are distributed at intervals along the circumferential direction of the outer shell 1, the protrusions 12 are propped against the circumferential wall of the inner shell 2, an air passing gap 204 is formed between the circumferential wall of the inner shell 2 and the bottom wall of the outer shell 1, and the first annular air channel 202 is communicated with the second annular air channel 203 through the air passing gap 204. By forming the protrusion 12 on the bottom wall of the outer casing 1 for abutting against the peripheral wall of the inner casing 2, thereby forming the air passing gap 204 between the bottom wall of the outer casing 1 and the peripheral wall of the inner casing 2, the air passing gap 204 is located at one side far away from the air dividing cavity 201, and the air flow collides with the bottom wall of the outer casing 1 to change the flow direction and enter the second annular air channel 203 from the first annular air channel 202, so that the air flow speed can be further reduced, and the time for the air flow to flow through the second annular air channel 203 can be prolonged.

In addition to the features of the above embodiments, the present embodiment further defines: the perisporium of inner shell 2 offsets with shell 1 diapire, and the wind hole has been seted up to one side that the inner shell 2 perisporium is close to shell 1 diapire, and the quantity of wind hole is a plurality of, and a plurality of wind holes are along the circumferencial direction interval distribution of inner shell 2, and first annular wind channel 202 communicates with second annular wind channel 203 through a plurality of wind holes.

As shown in fig. 2, 4 and 5, this embodiment further defines, in addition to the features of the above-described embodiment: a limiting protrusion 13 is formed on one side of the bottom wall of the outer shell 1 facing the inner shell 2, and a first limiting groove 205 matched with the limiting protrusion 13 is formed on one side of the peripheral wall of the inner shell 2 facing the bottom wall of the outer shell 1. Through the spacing protruding 13 and the first spacing recess 205 structure that form looks adaptation respectively at shell 1 and inner shell 2, first spacing recess 205 can form spacing locate action to spacing protruding 13 for quick alignment when shell 1 is connected with inner shell 2 improves the installation rate, makes its connection more firm simultaneously, thereby makes the installation of internal components such as heating element of hairdryer more stable.

As shown in fig. 2, this embodiment further defines, in addition to the features of the above-described embodiment: the peripheral wall of shell 1 is kept away from one side of second annular wind channel 203 and is formed with buckle 14, and the quantity of buckle 14 is a plurality of, and a plurality of buckles 14 are along the circumferencial direction interval distribution of shell 1, and buckle 14 is used for being connected with hairdryer casing subassembly adaptation. Through adopting above-mentioned structure, can make things convenient for the location installation of wind channel component, simultaneously through buckle 14 connected mode, can make the installation of wind channel component dismantle convenient and fast more, need not to borrow the instrument, improve assembly efficiency.

As shown in fig. 2 and 3, this embodiment further defines, in addition to the features of the above-described embodiment: the inner shell 2 comprises an inner shell body 21 and an end cover 22, wherein the inner shell body 21 is a hollow column, the inner shell body 21 is sleeved on the outer side of the air inlet column 11, the end cover 22 is covered on one side, far away from the air inlet column 11, of the inner shell body 21, the end cover 22 and the inner shell body 21 are far away from the peripheral wall of the air inlet column 11 to form an air distribution cavity 201, the peripheral wall of the inner shell body 21 and the peripheral wall of the air inlet column 11 are surrounded to form a first annular air channel 202, and a second annular air channel 203 is formed between the peripheral wall of the inner shell body 21 and the peripheral wall of the outer shell 1. By adopting the above structure, after the air flow enters the air distribution cavity 201 through the air inlet 101, the air flow collides with the structures such as the end cover 22, changes the flowing direction and sequentially flows into the first annular air channel 202 and the second annular air channel 203, and the flow speed of the air is reduced through the collision with the air flow, so that the time of the air flowing through the air channels is prolonged, and the air flow and the heating component positioned in the second annular air channel 203 can fully exchange heat.

As shown in fig. 3, this embodiment further defines, in addition to the features of the above-described embodiment: the end cover 22 is formed with a boss on a side facing the air dividing chamber 201, and a central axis of the boss overlaps with a central axis of the air inlet 101. By adopting the above structure, the convex column is opposite to the air flow entering the air duct member through the air inlet 101 and makes the air flow split into the first annular channel from different directions, thereby improving the split efficiency and making the air flow uniformly flow.

As shown in fig. 3, this embodiment further defines, in addition to the features of the above-described embodiment: the joint of the end cover 22 and the inner shell body 21 is in an arc structure. By adopting the cambered surface connection structure, the airflow at the transition part can flow stably, the change degree of the airflow velocity at the transition part is slowed down, and the noise is reduced.

As shown in fig. 2 and 3, this embodiment further defines, in addition to the features of the above-described embodiment: the end cover 22 is provided with a connecting hole 206, and the connecting hole 206 is used for connecting with an air outlet shell of the electric hair drier. By providing the connection holes 206 in the end cover 22, the air duct member can be stably assembled with the air outlet casing member by screw connection.

As shown in fig. 3, this embodiment further defines, in addition to the features of the above-described embodiment: the posts are provided with connection holes 206.

As shown in fig. 2 and 3, this embodiment further defines, in addition to the features of the above-described embodiment: one side of the inner shell body 21 far away from the air inlet column 11 is provided with a limiting part 23, and the limiting part 23 is used for being installed in an adapting way with an air outlet shell piece of the electric hair drier. The setting through spacing portion 23 can be convenient for fix a position the installation through the air-out shell spare of end cover 22 and hairdryer for second annular wind channel 203 can better aim at the air outlet of hairdryer, improves installation effectiveness.

As shown in fig. 2, this embodiment further defines, in addition to the features of the above-described embodiment: a second limiting groove 207 is formed on one side of the limiting part 23 away from the air inlet column 11, and the second limiting groove 207 is used for being installed in a matched mode with an air outlet shell piece of the electric hair drier. Through the second limit groove 207 and the protruding 12 part on the hair-dryer air-out shell part are installed in an adaptive mode, the air duct component and the air-out shell part can be connected more stably, alignment and positioning are facilitated, and installation efficiency is improved.

As shown in fig. 1 and 3, this embodiment further defines, in addition to the features of the above-described embodiment: the side wall of the limiting portion 23 extends from the connection portion of the limiting portion and the inner shell body 21 to a direction away from the inner shell body 21, and the vertical distance between the limiting portion and the central axis of the inner shell body 21 is larger and larger. By adopting the structure, when the air flow flows through the side wall of the limiting part 23, the air flow naturally flows to the air outlet of the electric hair drier due to the wall attaching effect, so that collision noise is reduced.

As shown in fig. 4, this embodiment further defines, in addition to the features of the above-described embodiment: a plurality of mounting grooves 208 are formed on one side of the peripheral wall of the inner shell 2 facing the second annular air duct 203, the plurality of mounting grooves 208 are distributed on the peripheral wall of the inner shell 2 at intervals, and the plurality of mounting grooves 208 are used for mounting heating components of the electric hair drier. Through adopting above-mentioned structure, can form the installation space and be used for the connection of heating element and wind channel component, the heating element of being convenient for sets up in second annular wind channel 203 steadily, can reduce its possibility that takes place the pine when receiving the impact and take place to loosen the damage, ensures that it can last effective steady operation.

As shown in fig. 4, this embodiment further defines, in addition to the features of the above-described embodiment: the side of the peripheral wall of the inner shell 2 facing the second annular air duct 203 is provided with air guide ribs 24, the air guide ribs 24 are arranged along the axial direction of the inner shell 2, the number of the air guide ribs 24 is multiple, mounting grooves 208 are formed between two adjacent air guide ribs 24, two adjacent air guide ribs 24 are in a group, and multiple groups of air guide ribs 24 are distributed on the peripheral wall of the inner shell 2 at intervals. Through the setting of wind-guiding muscle 24, the air current can flow to the air outlet of air-out shell spare more orderly under the guide of wind-guiding muscle 24, and two adjacent wind-guiding muscle 24 can form mounting groove 208 simultaneously, and the conducting strip on the heating element inserts in mounting groove 208 with the adaptation, and mounting groove 208 forms spacing effect to the conducting strip, ensures that the air current in the second annular wind channel 203 can fully contact with the heating element.

Example 2

As shown in fig. 6, a second embodiment of the present utility model discloses an electric hair dryer, comprising: the shell assembly 200 is provided with a mounting cavity, the shell assembly 200 is provided with an air inlet and an air outlet, and the mounting cavity is respectively communicated with the air inlet and the air outlet; the air duct component 100 is arranged on the shell component 200, the air duct component 100 is positioned in the installation cavity, and the air inlet, the air inlet hole 101, the air distribution cavity 201, the first annular air duct 202, the second annular air duct 203 and the air outlet are sequentially communicated; the heating component 300, the heating component 300 is disposed on the air duct member 100, the heating component 300 is located in the second annular air duct 203; the motor assembly 400, the motor assembly 400 is disposed on the air duct member 100, at least part of the motor assembly 400 is located in the mounting cavity, and the motor assembly 400 is used for generating airflow from the air inlet to the air outlet. According to the electric hair dryer disclosed in the second aspect of the utility model, through arranging the air duct member 100 of any one of the above-mentioned aspects, the air duct is divided into the air chamber 201, the first annular air duct 202 and the second annular air duct 203 through the cooperation of the outer shell 1 and the inner shell 2, the first annular air duct 202 is positioned at the inner side of the second annular air duct 203, the air inlet 101 of the outer shell 1 is positioned at the inner side of the first annular air duct 202, the air inlet 101, the air chamber 201, the first annular air duct 202 and the second annular air duct 203 are sequentially communicated, and by adopting the structure, the air passing duct can be prolonged, and meanwhile, when air enters the air duct member 100 through the air inlet 101 and collides with the air duct member 100 for multiple times to change the flowing direction, the flow speed of the air is reduced, so that the contact time of the air and the heating component 300 positioned in the second annular air duct 203 is increased, and the heat exchange efficiency of the air flow and the heating component 300 is improved, and the energy saving effect is achieved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An air duct member, comprising:

the air inlet device comprises a shell (1), wherein the shell (1) is provided with a first cavity, the shell (1) is provided with an opening, the opening is communicated with the first cavity, an air inlet column (11) is formed by extending the bottom wall of the shell (1) towards one side of the opening, the air inlet column (11) is provided with an air inlet hole (101), and the air inlet hole (101) is communicated with the first cavity;

the inner shell (2), at least part of inner shell (2) passes the opening stretches into in the first cavity, inner shell (2) cover is established the outside of air inlet post (11), inner wall of inner shell (2) with air inlet post (11) enclose and form branch wind chamber (201) and first annular wind channel (202), the lateral wall of inner shell (2) with the lateral wall of shell (1) encloses and forms second annular wind channel (203), fresh air inlet (101 branch wind chamber (201) first annular wind channel (202) with second annular wind channel (203) communicate in proper order, second annular wind channel (203) are used for the air outlet of intercommunication hairdryer, second annular wind channel (203) are used for installing heating element.

2. The air duct member of claim 1, wherein,

a plurality of protrusions (12) are formed on one side, facing the inner shell (2), of the bottom wall of the outer shell (1), the protrusions (12) are distributed at intervals along the circumferential direction of the outer shell (1), the protrusions (12) are propped against the peripheral wall of the inner shell (2), an air passing gap (204) is formed between the peripheral wall of the inner shell (2) and the bottom wall of the outer shell (1), and the first annular air channel (202) is communicated with the second annular air channel (203) through the air passing gap (204); or (b)

The peripheral wall of inner shell (2) offsets with shell (1) diapire, the wind hole has been seted up to one side that inner shell (2) peripheral wall is close to shell (1) diapire, the quantity of wind hole is a plurality of, a plurality of wind hole is followed the circumferencial direction interval distribution of inner shell (2), first annular wind channel (202) are through a plurality of wind hole with second annular wind channel (203) intercommunication.

3. The air duct member of claim 1, wherein,

a limit protrusion (13) is formed on one side of the bottom wall of the outer shell (1) facing the inner shell (2), and a first limit groove (205) matched with the limit protrusion (13) is formed on one side of the Zhou Bichao of the inner shell (2) facing the bottom wall of the outer shell (1); and/or

The peripheral wall of shell (1) is kept away from one side of second annular wind channel (203) is formed with buckle (14), the quantity of buckle (14) is a plurality of, and is a plurality of buckle (14) are followed the circumferencial direction interval distribution of shell (1), buckle (14) are used for with hairdryer casing subassembly adaptation connection.

4. The air duct member according to claim 1, wherein the inner casing (2) comprises an inner casing body (21) and an end cover (22), the inner casing body (21) is a hollow column, the inner casing body (21) is sleeved on the outer side of the air inlet column (11), the end cover (22) is covered on one side, far away from the air inlet column (11), of the inner casing body (21), the end cover (22) and the peripheral wall, far away from the air inlet column (11), of the inner casing body (21) are enclosed to form the air separating cavity (201), the peripheral wall of the inner casing body (21) is enclosed to form the first annular air duct (202), and the second annular air duct (203) is formed between the peripheral wall of the inner casing body (21) and the peripheral wall of the outer casing (1).

5. The air duct member of claim 4, wherein,

a convex column is formed on one side of the end cover (22) facing the wind distributing cavity (201), and the central axis of the convex column is overlapped with the central axis of the air inlet hole (101); and/or

The joint of the end cover (22) and the inner shell body (21) is in an arc structure; and/or

The end cover (22) is provided with a connecting hole (206), and the connecting hole (206) is used for being connected with an air outlet shell piece of the electric hair drier.

6. The air duct member according to claim 4, wherein a limit part (23) is arranged on one side of the inner shell body (21) away from the air inlet column (11), and the limit part (23) is used for being installed in a matching manner with an air outlet shell piece of the electric hair dryer.

7. The air duct member of claim 6, wherein,

a second limiting groove (207) is formed on one side, far away from the air inlet column (11), of the limiting part (23), and the second limiting groove (207) is used for being installed in an adaptive manner with an air outlet shell piece of the electric hair drier; and/or

The side wall of the limiting part (23) extends from the joint of the limiting part and the inner shell body (21) to the direction away from the inner shell body (21), and the vertical distance between the limiting part and the central axis of the inner shell body (21) is larger and larger.

8. The air duct member according to claim 1, wherein a plurality of mounting grooves (208) are formed in the inner housing (2) Zhou Bichao toward one side of the second annular air duct (203), the plurality of mounting grooves (208) are distributed on the peripheral wall of the inner housing (2) at intervals, and the plurality of mounting grooves (208) are used for mounting heating components of the hair dryer.

9. The air duct member according to claim 8, wherein an air guide rib (24) is formed on one side of the inner casing (2) Zhou Bichao toward the second annular air duct (203), the air guide ribs (24) are disposed along the axial direction of the inner casing (2), the number of the air guide ribs (24) is plural, the mounting groove (208) is formed between two adjacent air guide ribs (24), two adjacent air guide ribs (24) are a group, and multiple groups of air guide ribs (24) are distributed on the peripheral wall of the inner casing (2) at intervals.

10. An electric hair dryer, comprising:

the shell assembly (200), the shell assembly (200) is provided with a mounting cavity, the shell assembly (200) is provided with an air inlet and an air outlet, and the mounting cavity is respectively communicated with the air inlet and the air outlet;

the air duct member (100) according to any one of claims 1 to 9, wherein the air duct member (100) is disposed on the housing assembly (200), the air duct member (100) is disposed in the mounting cavity, and the air inlet, the air inlet hole (101), the air dividing cavity (201), the first annular air duct (202), the second annular air duct (203) and the air outlet are sequentially communicated;

-a heat generating component (300), the heat generating component (300) being arranged on the air duct member (100), the heat generating component (300) being located within the second annular air duct (203);

-a motor assembly (400), the motor assembly (400) being arranged on the air duct member (100), at least part of the motor assembly (400) being located in the mounting cavity, the motor assembly (400) being arranged to generate an air flow from the air inlet to the air outlet.