A hair dryer

By combining a ring-shaped air outlet and a central air outlet, along with a sealed air duct design, the problems of gradually decreasing air pressure and hair tangling in the hair dryer are solved, resulting in enhanced air pressure and controllable temperature, thus improving the user experience.

CN111887569BActive Publication Date: 2025-11-25WENZHOU PRITECH TRADE
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Patent Information

Application Number
CN202010829661.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-08-17
Publication Date
2025-11-25
Estimated Expiration
2040-08-17

AI Technical Summary

Technical Problem

The air pressure of existing hair dryers gradually decreases during use, requiring higher air pressure to meet the demand. Furthermore, the traditional structure easily leads to hair tangling, making it inconvenient to use.

Method used

The combination of annular air outlet and central air outlet structure allows the airflow to mix after a certain distance to form a columnar laminar airflow with enhanced wind pressure. The rear end of the air duct is closed to prevent natural wind from entering, and the air guide and independent air duct improve the airflow guidance effect.

Benefits of technology

It improves the wind pressure utilization rate of the operating section, enhances wind pressure, avoids hair tangling, and has controllable temperature, making it safer and more reliable to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a hair dryer, which comprises a handle connected with a wind tube, a fan assembly arranged in the handle, a front end of the wind tube being an air outlet end, a rear end of the wind tube being closed, an annular air outlet being formed on the periphery of the front end of the wind tube, a central air outlet hole being formed at the center of the front end of the wind tube, high-speed airflow in the wind tube being blown out from the annular air outlet and the central air outlet hole respectively, and the airflow blown out from the annular air outlet and the airflow blown out from the central air outlet hole being mixed to form a cylindrical laminar airflow with enhanced air pressure after passing through a specific distance. The air outlet structure of the application is composed of the annular air outlet and the central air outlet hole, the blown-out airflow is mixed to form the cylindrical laminar airflow with enhanced air pressure after passing through the specific distance, and the enhanced section is just the normal use section of the hair dryer. The above structure of the application makes the airflow reach the highest air pressure in the use section, and improves the utilization rate of the air pressure.
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Description

TECHNICAL FIELD

[0001] The present application relates to a small household appliance, in particular to a hair dryer for blowing. BACKGROUND

[0002] The conventional hair dryer includes a barrel and a handle, a fan assembly is installed in the barrel, when using, hair is often sucked into the barrel and wound on the fan assembly. A scheme that the fan assembly is arranged in the handle appears in the prior art, for example, a hair dryer disclosed in Chinese patent No. 201310111469.8, published on August 3, 2016, includes a body, a fan unit and a conduit for transmitting airflow to the body, wherein the conduit includes an airflow inlet positioned at or near an end of the conduit distal from the body, and the fan unit is arranged in the conduit between the inlet and the body, wherein a portion of the conduit is lined with a material, and wherein the lined portion of the conduit is arranged between the fan assembly and the body, wherein the hair dryer includes an airflow flow path extending through the body, and a main airflow flow path extends from the airflow inlet to an airflow outlet, wherein an airflow flow path is nested or embedded in the main airflow flow path, and a heater is provided, the heater is located in the main airflow flow path in the body, and the airflow flow path is in thermal communication with the heater. In the above scheme, the middle part of the body is a hollow structure, the periphery is an air outlet, the front end of the hollow structure of the body is an air outlet end, and the rear end is an air inlet end. Natural wind is supplemented to the air outlet by utilizing the Coanda effect. The air outlet structure in the prior art gradually reduces the air pressure from the air outlet, and a large air pressure is required to meet the needs. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a hair dryer with enhanced air pressure in the use section, convenient to use and small in size.

[0004] According to the hair dryer provided by the present application, the hair dryer includes a barrel and a handle connected with the barrel, a fan assembly is arranged in the handle, the front end of the barrel is an air outlet end, the rear end of the barrel is closed, an annular air outlet is formed on the periphery of the front end of the barrel, a central air outlet hole is formed in the center of the front end of the barrel, high-speed airflow in the barrel is blown out from the annular air outlet and the central air outlet hole, respectively, and the airflow blown out from the annular air outlet and the airflow blown out from the central air outlet hole are mixed to form a cylindrical laminar airflow with enhanced air pressure after passing through a specific distance.

[0005] According to the hair dryer provided by the present application, the hair dryer further has the following technical features:

[0006] Further, the airflow blown out from the annular air outlet and the airflow blown out from the central air outlet hole are mixed to form a cylindrical laminar airflow with enhanced air pressure after passing through 14 cm.

[0007] Further comprising, the length of the columnar laminar airflow with wind pressure enhancement is 5cm-20cm.

[0008] Further comprising, the aperture of the central air outlet is 2.0mm-3.0mm.

[0009] Further comprising, the air duct is provided with an annular air channel communicated with the annular air outlet and a central air channel communicated with the central air outlet, and the high-speed airflow in the air duct enters the annular air channel and the central air channel respectively.

[0010] Further comprising, the air duct is provided with a wind guide member in the front end inner cavity, the periphery of the wind guide member is shaped as the annular air channel, the front end periphery of the wind guide member is shaped as the annular air outlet, the center of the wind guide member is shaped as the central air channel, and the front end center of the wind guide member is shaped as the central air outlet.

[0011] Further comprising, the wind guide member comprises an outer wall and an inner wall, the annular air channel is formed between the outer wall and the inner wall, the front end of the outer wall is shaped as an inward arc-shaped part, the front end of the inner wall is shaped as an outward arc-shaped part, and the two arc-shaped parts are oppositely arranged to form the annular air outlet, and the annular air outlet is in a ring-shaped gap structure.

[0012] Further comprising, the arc-shaped part is a flow guide surface composed of multiple arc surfaces.

[0013] Further comprising, the middle part of the wind guide member is shaped as an inner cavity, the rear end of the inner cavity of the wind guide member is provided with an air inlet, and the front end of the inner cavity of the wind guide member is provided with the central air outlet.

[0014] Further comprising, the front end middle part of the wind guide member is shaped as a horn mouth, and the central air outlet is located at the center of the horn mouth.

[0015] Compared with the prior art, the hair dryer provided by the present application has the following advantages: first, the air outlet structure of the present application is composed of an annular air outlet and a central air outlet, and the airflow after blowing mixes to form a columnar laminar airflow with wind pressure enhancement after a certain distance, and the enhancement section is just the normal use section of the hair dryer. The above structure of the present application makes the airflow reach the highest wind pressure in the use section, thereby improving the utilization rate of wind pressure. Second, the present application provides a brand-new structure of hair dryer, the rear end of the air duct of the hair dryer is closed, and the natural wind and hot wind are not mixed by using the Coanda effect, so that the temperature of the blown hot wind can be set at will and easily controlled, which is safe and reliable and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the present application.

[0017] Figure 2 is a sectional view of the air duct in the present application.

[0018] Figure 3 is a front view of the air guide in the present application.

[0019] Figure 4 is a sectional view of the air guide in the present application.

[0020] Figure 5 is a rear view of the present application.

[0021] Figure 6 is Figure 1 is an enlarged view of A in

[0022] Figure 7 is an exploded perspective view of the air guide in the present application.

[0023] Figure 8 is a schematic view of the blowing in the present application.

[0024] Figure 9 is a front view of the handle in the present application.

[0025] Figure 10 is a perspective view of the lower cover of the handle in the present application.

[0026] Figure 11 is a partial perspective view of the lower cover of the handle and the upper cover of the handle in the present application.

[0027] Figure 12 is a partial perspective view of the handle and the air duct in the present application.

[0028] Figure 13 is a perspective view of the upper cover of the handle and the lower cover of the handle in the present application.

[0029] Figure 14 is a perspective view of the upper cover of the handle, the lower cover of the handle and the fixing base in the present application.

[0030] Figure 15 is a sectional view of the cover in the present application. DETAILED DESCRIPTION

[0031] For the purpose of clarity of the scheme in the present application, the preferred embodiments are given below and are explained in detail in connection with the drawings. The following explanation is merely exemplary in nature and is not intended to limit the application or use of the present disclosure. It should be understood that in all the drawings, the corresponding reference numerals represent the same or corresponding parts and features.

[0032] As Figures 1 to 15As shown, the hair dryer provided by the present application comprises a wind barrel 1 and a handle 2 connected with the wind barrel 1, a fan assembly 3 is arranged in the handle 2, the front end of the wind barrel 1 is an air outlet end, the rear end of the wind barrel 1 is closed, an annular air outlet 10 is formed on the periphery of the front end of the wind barrel 1, a central air outlet hole 20 is formed in the center of the front end of the wind barrel 1, high-speed airflow in the wind barrel 1 is blown out from the annular air outlet 10 and the central air outlet hole 20 respectively, and the airflow blown out from the annular air outlet 10 and the airflow blown out from the central air outlet hole 20 are mixed to form a cylindrical laminar airflow with enhanced wind pressure after passing through a specific distance. The specific distance in the embodiment refers to the shortest distance between the air outlet of the hair dryer and the hair during the normal use of the user. The air outlet of the prior art hair dryer usually has the highest wind pressure at the air outlet, and then gradually decreases, and the wind pressure of the use section is less than that at the air outlet. In order to improve the wind pressure of the use section, it is necessary to improve the wind pressure of the air outlet. The increase of the wind pressure not only requires a motor with higher speed, but also requires to improve the structure of the entire air duct. The high wind pressure also means that the noise of the hair dryer is increased. The present application utilizes the combined structure of the annular air outlet and the central air outlet to mix the air outlet in the use section, so that the wind pressure of the use section reaches the highest, and the airflow is fully utilized.

[0033] The specific test data can be seen in the following table. From the table, it can be seen that the wind pressure of the prior art gradually decreases, while the wind pressure of the present application is enhanced after 14 cm and starts to decrease after 28 cm. Figure 8 From the given air outlet schematic diagram, it can also be seen that the wind pressure of the present application reaches the highest in the use section.

[0034] Blowing distance Prior art wind pressure Inventive wind pressure 10 cm 145 132 12 cm 143 135 14 cm 142 137 16 cm 142 140 18 cm 141 137 20 cm 140 138 22 cm 140 137 24 cm 139 136 26 cm 139 135 28 cm 139 136 30 cm 139 134 32 cm 139 133 34 cm 139 133 36 cm 139 134

[0035] The rear end of the wind barrel 1 in the present application is closed, and the natural wind is not supplemented into the hot air by utilizing the Coanda effect, so that the temperature of the blown hot air is controllable.

[0036] Referring to Figures 1 to 4 In the above embodiment of the present application, the airflow blown out from the annular air outlet 10 and the airflow blown out from the central air outlet hole 20 are mixed to form a cylindrical laminar airflow with enhanced wind pressure after passing through 14 cm. The 14 cm in the present application is usually the shortest distance of the use section. If the distance between the use section and the scalp is too short, the hot air will cause discomfort to the scalp and is not convenient to use. The above distance is the optimal distance.

[0037] Referring to Figures 1 to 4 In the above embodiment of the present application, the cylindrical laminar airflow with enhanced wind pressure has a length of 5 cm-20 cm. The embodiment is 14 cm, that is, from 14 cm to 28 cm, and the total length is 14 cm. The above size meets the use of the hair dryer, that is, the effective use section of the present application is 5 cm-20 cm. The wind pressure in this section is enhanced and reaches the highest.

[0038] Referring to Figures 1 to 4 In the above embodiment of the present application, the diameter of the central air outlet 20 is further included as 2.0mm-3.0mm. In this embodiment, the diameter of the central air outlet 20 is 2.5mm. By controlling the diameter of the central air outlet 20, the specific distance is adjusted. In this embodiment, the diameter of the central air outlet 20 is 2.5mm, so that the specific distance is 14cm, and the cylindrical laminar airflow is formed from 14cm to 28cm, which is the effective use section. The shape of the central air outlet 20 in the present application is circular, triangular, polygonal, oval, or pentagonal star, etc.

[0039] Referring to Figures 1 to 4 In the above embodiment of the present application, the annular air duct 101 is arranged in the air duct 1 and communicates with the annular air outlet 10, and the central air duct 201 is arranged in the air duct 1 and communicates with the central air outlet 20, and the high-speed airflow in the air duct 1 enters the annular air duct 101 and the central air duct 201, respectively. In the present application, the same high-speed airflow in the air duct 1 is divided into two parts, one part enters the annular air duct 101, and the other part enters the central air duct 201. The two parts of high-speed airflow are blown out through the annular air outlet 10 and the central air outlet 20, respectively, so that the cylindrical laminar airflow with enhanced wind pressure can be formed after a specific distance. The annular air duct 101 and the central air duct 201 are isolated from each other to form independent channels.

[0040] Referring to Figures 1 to 4 In the above embodiment of the present application, the air guide 4 is arranged in the front end inner cavity of the air duct 1, the outer periphery of the air guide 4 is shaped as the annular air duct 101, the front end outer periphery of the air guide 4 is shaped as the annular air outlet 10, the center of the air guide 4 is shaped as the central air duct 201, and the front end center of the air guide 4 is shaped as the central air outlet 20. The air guide 4 forms the above air outlet structure, which is convenient for processing and installation.

[0041] Referring to Figures 1 to 4 In the above embodiment of the present application, the air guide 4 includes an outer wall 43 and an inner wall 44, the annular air duct 101 is formed between the outer wall 43 and the inner wall 44, the front end of the outer wall 43 is shaped as an inward arc-shaped portion 431, the front end of the inner wall 44 is shaped as an outward arc-shaped portion 441, and the two arc-shaped portions are oppositely arranged to form the annular air outlet 10, which is a ring-shaped gap structure. The annular air outlet 10 in the present application is composed of two arc-shaped portions, which is conducive to air guiding and makes the airflow blow out more smoothly. The annular air outlet 10 in the present application is a ring-shaped gap structure, so that the high-speed airflow can blow out a specific distance to form the use section with enhanced wind pressure.

[0042] Referring to Figures 1 to 4 In the above embodiment of the present application, the arc-shaped portion 431, 441 is further composed of a plurality of arc-shaped surfaces.

[0043] Referring to Figures 1 to 4 In the above embodiment of the present application, the middle portion of the air guide 4 is formed with an inner cavity, the rear end of the inner cavity of the air guide 4 is provided with an air inlet hole 45, and the front end is provided with the central air outlet hole 20. The middle portion of the air guide 4 is formed with a central air duct 201, the high-speed airflow in the air duct 1 enters the central air duct 201 through the air inlet hole 45, and is finally blown out through the central air outlet hole 20.

[0044] Referring to Figures 1 to 4 In the above embodiment of the present application, the middle portion of the air guide 4 is formed with an inner cavity, the rear end of the inner cavity of the air guide 4 is provided with an air inlet hole 45, and the front end is provided with the central air outlet hole 20. The middle portion of the air guide 4 is formed with a central air duct 201, the high-speed airflow in the air duct 1 enters the central air duct 201 through the air inlet hole 45, and is finally blown out through the central air outlet hole 20.

[0045] Referring to Figure 1 and Figure 2 In the above embodiment of the present application, the heating assembly 5 is arranged between the outer wall 43 and the inner wall 44, and the heating assembly 5 is arranged in the annular air duct 101. The heating assembly 5 is composed of a plurality of sheet-shaped heating pieces, which are clamped on the inner wall 44. The heating assembly 5 heats the airflow in the annular air duct 101. In the present application, the outer wall 43 is the outer shell of the air guide 4, and the inner wall 44 can be an integral structure or composed of a plurality of components. In the present embodiment, the inner wall 44 is composed of a support frame of the heating assembly 5 and a partial inner wall connected with the outer wall 43. The heating assembly 5 is first installed on the support frame, and then the support frame is clamped on the partial inner wall, so that the support frame becomes a part of the inner wall. The above structure facilitates the installation of the heating assembly 5.

[0046] Referring to Figure 1 , Figure 2 , Figure 5 and Figure 15In the above embodiment of the present application, the rear end of the air duct 1 is provided with a cover 6, which closes the rear end of the air duct 1. The cover 6 is buckled to the rear end of the air duct 1, thereby closing the rear end of the air duct 1 and preventing natural wind from entering. The cover 6 is connected to the air duct 1 through a connecting piece 60. The connecting piece 60 is provided with a sealing strip 601 between the air duct 1 and the cover 6. The connecting piece 60 of the present application serves to connect the cover 6 and the air duct 1, and facilitates the installation of the two parts, thereby making the connection more firm. The sealing strip 601 serves to seal and prevent air leakage.

[0047] Referring to Figure 5 and Figure 15 In the above embodiment of the present application, the cover 6 is provided with a power button 61 and a plurality of indicator light strips 62 around the power button 61. The power button 61 is used to control the power on and off. The indicator light strips 62 are provided with two, one for temperature indication and one for wind speed indication. The two indicator light strips 62 are in the shape of a circular arc, and are lit in different lengths according to their sizes. The indicator light strips 62 are composed of a plurality of light sources and light guide rings matched with the light sources. The light guide rings disperse the light sources into a multi-segment structure, making the light more beautiful. The connecting piece 60 is installed with a circuit board 63, which is provided with a main switch 631. The power button 61 abuts against the main switch 631. The cover 6 is formed with a recess 69, in which the power button 61 is arranged. A sealing disc 68 is further arranged between the power button 61 and the main switch 631. The circuit board 63 is fixed on the connecting piece 60, and is provided with various circuits for controlling the operation of the hair dryer. The power button 61 is arranged on the cover 6, which is convenient for operation. The recess 69 makes the whole more beautiful, and the power button 61 is installed in the recess 69, which will not be misoperated. The sealing disc 68 seals the through hole at the power button 61, preventing air leakage.

[0048] Referring to Figure 2 In the above embodiment of the present application, the cover 6 is provided with a cover 6, which closes the rear end of the air duct 1. The cover 6 is buckled to the rear end of the air duct 1, thereby closing the rear end of the air duct 1 and preventing natural wind from entering. The cover 6 is connected to the air duct 1 through a connecting piece 60. The connecting piece 60 is provided with a sealing strip 601 between the air duct 1 and the cover 6. The connecting piece 60 of the present application serves to connect the cover 6 and the air duct 1, and facilitates the installation of the two parts, thereby making the connection more firm. The sealing strip 601 serves to seal and prevent air leakage.

[0049] Referring to Figure 2In the above embodiment of the present application, the central air duct 201 is further provided with a water ion structure 65, which is a water condensation structure using temperature difference. The water formed by the water ion structure 65 is scattered by high-speed airflow and is blown out through the central air outlet 20. The anion generating device and the water ion structure in the present application are mature structures, and their working principles are not described here.

[0050] Referring to Figure 1 , Figure 6 , Figure 13 and Figure 14 In the above embodiment of the present application, the handle 2 is further provided with a double-layered shell, including a main shell 21 in the inner layer and a decorative shell 22 outside the main shell 21. The upper part of the main shell 21 is formed with an inclined part 23, and the inclined part 23 and the decorative shell 22 form a containing space, in which a button switch 24 is arranged. The main shell 21 is formed with a main air duct, and the handle 2 is provided with an air inlet structure, in which a filter screen is arranged. The inclined part 23 and the decorative shell 22 form a containing space, thereby providing a mounting space for the button switch 24. The button switch 24 is not inserted into the main air duct and does not damage the main air duct, so that a sealing structure does not need to be specially arranged and the mounting position of the button switch 24 is sealed. The above structure makes the installation of the button switch 24 more convenient and provides a sealing effect.

[0051] Referring to Figure 13 and Figure 14 In the above embodiment of the present application, the inclined part 23 is further provided with a fixing column 231, on which a fixing frame 232 is arranged, and the button switch 24 is arranged on the fixing frame 232. The fixing frame 232 facilitates the installation of the button switch 24 and makes the structure more stable.

[0052] Referring to Figure 6 , Figure 9 , Figure 13 and Figure 14Further comprising in the above embodiment of the present application, the main housing 21 comprises a handle upper cover 211 and a handle lower cover 212, the handle upper cover 211 is buckled with the handle lower cover 212. The upper section of the handle lower cover 212 is provided with a sealing strip 213, the sealing strip 213 is fixed on the handle lower cover 212 through a secondary injection molding process. The handle upper cover 211 is provided with a groove 214 matched with the sealing strip 213, the sealing strip 213 is clamped into the groove 214. The thickness of the main housing 21 in the present application is relatively thin, the sealing strip 213 is difficult to fix and position, and the sealing effect is poor. The sealing strip 213 is injected on the handle lower cover 212 through a secondary injection molding process after the main housing 21 is injection molded, the sealing strip 213 and the handle lower cover 212 become an integral structure, the sealing strip 213 is not easy to separate and will not displace, which is convenient for installation and has better sealing effect.

[0053] Referring to Figures 10 to 12 Further comprising in the above embodiment of the present application, the sealing strip 213 comprises straight line sections 214 on both sides and an arc section 215 connecting the two straight line sections 214, the straight line sections 214 are located on the side ends of the handle lower cover 212, and the arc section 215 is located on the inner wall of the handle lower cover 212. The above structure of the present application is just the position of the fan assembly, which forms the main air duct in the handle 2, so the sealing strip 213 can seal this position to prevent air leakage.

[0054] Referring to Figures 10 to 12 Further comprising in the above embodiment of the present application, the handle upper cover 211 is provided with a groove matched with the straight line section 214, the straight line section 214 is clamped into the groove, and the arc section 215 is clamped into a clamping groove 216 on the lower connecting section of the air duct 1. The upper ends of the handle upper cover 211 and the handle lower cover 212 fasten the lower connecting section of the air duct 1, and the arc section 215 can seal the connection to provide sealing effect.

[0055] Referring to Figure 9 Further comprising in the above embodiment of the present application, the decorative shell 22 is a cylindrical structure integrally injection molded, and the decorative shell 22 is sleeved outside the main housing 21. The main housing 21 adopts an upper and lower half structure in the present application, which is convenient for installation of internal components. The decorative shell 22 is an integrally injection molded structure, which is more beautiful and has good hand feeling.

[0056] Referring to Figure 2 and Figure 7Further comprising in the above embodiment of the present application, the front end of the air duct 1 is provided with a ring-shaped light guide ring 71 and a light source 72 corresponding to the ring-shaped light guide ring 71. The ring-shaped light guide ring 71 and the light source 72 constitute a ring-shaped light ring, which not only plays an indicating role, but also makes the whole more beautiful. The ring-shaped light guide ring 71 can diffuse the point light source 72 to form a continuous light ring. The material of the ring-shaped light guide ring 71 is made of plastic with diffusing agent. The light source 72 includes a ring-shaped circuit board and a plurality of indicator lights arranged on the ring-shaped circuit board. The circuit board is used to fixedly install the indicator lights, and the indicator lights are circularly distributed on the circuit board.

[0057] In conclusion, the above-mentioned content is only an embodiment of the present application, which is only used to illustrate the principle of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hair dryer, comprising a hair dryer nozzle connected to a handle, wherein a fan assembly is disposed in the handle, characterized in that: The front end of the air duct is the air outlet, and the rear end of the air duct is closed. An annular air outlet is formed around the outer periphery of the front end of the air duct, and a central air outlet is formed at the center of the front end. An annular air duct communicating with the annular air outlet and a central air duct communicating with the central air outlet are both provided inside the air duct. The annular air duct and the central air duct are isolated from each other, forming independent channels. High-speed airflow from inside the air duct enters both the annular air duct and the central air duct respectively. The airflow blown out from the annular air outlet and the central air outlet mixes after traveling a certain distance to form a columnar laminar airflow with enhanced wind pressure. A guide element is provided in the inner cavity of the front end of the air duct. The annular air duct is formed around the periphery of the guide element. The annular air outlet is formed around the front end of the guide element. A central air duct is formed at the center of the guide element. A central air outlet is formed at the center of the front end of the guide element. A water ion structure is provided in the central air duct.

2. A hair dryer as described in claim 1, characterized in that: The airflow from the annular air outlet and the airflow from the central air outlet mix after passing through 14cm to form a columnar laminar airflow with enhanced wind pressure. The length of the columnar laminar airflow with enhanced wind pressure is 5cm-20cm.

3. A hair dryer as described in claim 1, characterized in that: The diameter of the central air outlet is 2.0mm-3.0mm.

4. A hair dryer as described in claim 1, characterized in that: The air guide includes an outer wall and an inner wall, and an annular air duct is formed between the outer wall and the inner wall. The front end of the outer wall forms an inward arc-shaped part, and the front end of the inner wall forms an outward arc-shaped part. The two arc-shaped parts are arranged opposite to each other to form the annular air outlet, which is an annular slit structure.

5. A hair dryer as described in claim 4, characterized in that: The arc-shaped part is a guide surface composed of multiple arc-shaped structures.

6. A hair dryer as described in claim 4, characterized in that: The air guide has an inner cavity in the middle, and an air inlet is provided at the rear end of the inner cavity and a central air outlet is provided at the front end.

7. A hair dryer as described in claim 4, characterized in that: A heating assembly is provided between the outer wall and the inner wall. The heating assembly is located in the annular air duct and is composed of multiple sheet-like heating elements. The heating elements are clamped onto the inner wall, and the heating assembly heats the airflow in the annular air duct.

8. A hair dryer as described in claim 1, characterized in that: The front end of the air guide forms a flared opening, and the central air outlet is located at the center of the flared opening.

9. A hair dryer as described in claim 1, characterized in that: The rear end of the air duct is provided with a cover, which closes the rear end of the air duct. The cover is connected to the air duct via a connector. A sealing strip is provided between the connector, the air duct, and the cover. The cover is provided with a power button and multiple indicator light strips located around the power button. The front end of the air duct is provided with an annular light guide and a light source corresponding to the annular light guide.

10. A hair dryer as described in claim 1, characterized in that: The handle has a double-layer structure, including a main shell located in the inner layer and a decorative shell located outside the main shell. The upper part of the main shell forms an inclined portion, and an accommodating space is formed between the inclined portion and the decorative shell. A button switch is provided in the accommodating space. The decorative shell is a cylindrical structure integrally injection molded and is fitted outside the main shell.

Citation Information

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