A hair dryer

Abstract

The utility model relates to the technical field of household appliances, especially a hair dryer, and the technical scheme points include: the cylinder shell, the outer periphery side of cylinder shell is provided with the arc holding surface for the user hand holds, the cylinder shell inside has the first airflow channel, and the cylinder shell is equipped with the air outlet and the air inlet that communicate with the first airflow channel, and the air outlet is located one end at the cylinder shell, and the air outlet assembly is set up in the cylinder shell, and the air outlet assembly sends the airflow to the air outlet via the first airflow channel, and the application solves the inconvenient problem of handleless hair dryer holding in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, and in particular to a hair dryer. Background Technology

[0002] Hair dryers, also known as handheld hair dryers, are personal care appliances that use an electric motor to drive a fan to blow air through an electric heating element, thereby producing hot air to dry hair and style it. Since their invention, hair dryers have become one of the most common household appliances worldwide.

[0003] Currently, most hair dryers have a handle. However, in actual use, the handle takes up a lot of space, making the hair dryer inconvenient to carry. To address this, some hair dryers have adopted a foldable handle structure. However, even if the handle is foldable, the overall shape of the hair dryer still appears too bulky because the handle is still there.

[0004] To further save storage space occupied by hair dryers, there are currently handleless hair dryer designs. However, the design of handleless hair dryers on the market still has some unreasonable aspects. Specifically, it is difficult for users to hold the hair dryer comfortably and stably, resulting in a poor hair drying experience and making it very inconvenient for users to use handleless hair dryers.

[0005] Therefore, improvements to existing technologies are necessary.

[0006] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0007] This utility model provides a hair dryer to solve the problem of inconvenient gripping of handleless hair dryers in the prior art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A hair dryer, comprising:

[0010] The cylindrical shell has an arc-shaped grip surface on its outer periphery for a user's hand to hold, and the interior of the cylindrical shell has a first airflow channel. The cylindrical shell is also provided with an air outlet and an air inlet that are connected to the first airflow channel. The air outlet is located at one end of the cylindrical shell.

[0011] An air outlet assembly is disposed inside the cylindrical shell, and the air outlet assembly delivers airflow to the air outlet via the first airflow channel.

[0012] Preferably, the outer peripheral surface of the cylindrical shell has an arc-shaped concave contour from both ends toward the middle to form the arc-shaped gripping surface;

[0013] Alternatively, the outer circumferential surface of the shell has an arc-shaped tapering profile from one end near the air outlet to the other end to form the arc-shaped grip surface.

[0014] Preferably, the cylindrical shell comprises:

[0015] The outer casing, the arc-shaped grip surface, and the air inlet are respectively disposed on the outer casing;

[0016] The inner shell is disposed within the outer shell. The first airflow channel and the air outlet are disposed within the inner shell. The first airflow channel passes through both ends of the inner shell, and the air outlet is located at one end opening of the inner shell. The air outlet assembly is disposed within the inner shell and located within the first airflow channel.

[0017] A heat insulation cavity is formed between the inner wall of the outer shell and the outer wall of the inner shell.

[0018] Preferably, the air inlet includes:

[0019] The first air inlet is disposed through the end face of the outer casing away from the air outlet and is connected to the first airflow channel.

[0020] And / or a second air inlet, which is disposed through the circumferential sidewall of the housing and connected to the first airflow channel.

[0021] Preferably, the air inlet further includes a third air inlet hole, which is disposed through the end face of the outer shell near the air outlet. A second airflow channel is formed inside the heat insulation cavity, and the second airflow channel is connected to the first airflow channel.

[0022] Preferably, a filter screen is provided between the outer shell and the inner shell, and the filter screen covers the second airflow channel.

[0023] Preferably, it also includes a noise reduction bracket, which is fixedly disposed at the end of the inner shell away from the air outlet, and the noise reduction bracket is provided with multiple honeycomb holes.

[0024] Preferably, it also includes a PCB board disposed inside the housing and located at the end of the housing away from the air outlet. The PCB board has a clearance hole, which is disposed opposite to the first air inlet hole. The clearance hole is used to connect the first air inlet hole and the first airflow channel.

[0025] Preferably, one end of the cylindrical shell is provided with an air outlet, and the air outlet is provided with an air outlet hole that communicates with the air outlet.

[0026] The air outlet can be any one of the following: air collector, air diffuser, air smoother, or air styling nozzle.

[0027] Preferably, the air outlet assembly includes:

[0028] A fan is installed in the cylindrical shell;

[0029] A heating element is disposed in the shell and located within the first airflow channel.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The hair dryer provided by this utility model has an arc-shaped grip surface on the outer periphery of the barrel, which makes the barrel fit the grip contour of the hand. The user can hold the hair dryer stably and comfortably. At this time, the user only needs to point the air outlet towards the hair, and the air outlet component delivers airflow to the air outlet through the first airflow channel, thereby realizing functions such as drying and styling. The problem of inconvenient hair dryer grip is solved.

[0032] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the hair dryer provided in Embodiment 1 of this utility model;

[0035] Figure 2 This is a cross-sectional view of the hair dryer provided in Embodiment 1 of this utility model;

[0036] Figure 3 This is a schematic diagram of the assembly relationship of the hair dryer provided in Embodiment 1 of this utility model;

[0037] Figure 4 This is a structural schematic diagram of the hair dryer provided in Embodiment 1 of this utility model from another perspective;

[0038] Figure 5 This is a schematic diagram of the structure of the hair dryer with the air outlet installed according to Embodiment 1 of this utility model;

[0039] Figure 6 This is a schematic diagram of the hair dryer structure provided in Embodiment 2 of this utility model.

[0040] Figure label:

[0041] 101. First airflow channel; 102. Second airflow channel; 103. Air outlet; 104. Air inlet; 1041. First air inlet hole; 1042. Second air inlet hole; 1043. Third air inlet hole; 1. Cylinder shell; 11. Outer shell; 111. Exposed opening; 12. Inner shell; 2. Air outlet assembly; 21. Heating element; 22. Fan; 3. Arc-shaped grip surface; 4. Filter screen; 5. Noise reduction bracket; 6. Air collection sleeve; 7. PCB board; 71. Clearance hole; 8. Air outlet nozzle; 81. Air outlet hole. Detailed Implementation

[0042] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0044] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0045] The following is in conjunction with the appendix Figure 1-6 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0046] Example 1:

[0047] Please refer to Figure 1This utility model provides a hair dryer, including a barrel shell 1 and an air outlet assembly 2. The outer periphery of the barrel shell 1 is provided with an arc-shaped grip surface 3 for a user's hand to hold. The barrel shell 1 has a first airflow channel 101 inside, and the barrel shell 1 is provided with an air outlet 103 and an air inlet 104 connected to the first airflow channel 101. The air outlet 103 is located at one end of the barrel shell 1. The air outlet assembly 2 is disposed inside the barrel shell 1, and the air outlet assembly 2 delivers airflow to the air outlet 103 through the first airflow channel 101.

[0048] In some embodiments, the shell 1 is a long cylindrical structure with two ends and a hollow interior. The air outlet 103 is located at one end of the shell 1, and the air outlet assembly 2 is assembled into the hollow area inside the shell 1, thereby improving the overall compactness of the structure.

[0049] Based on this, by activating the air outlet component 2, the air outlet component 2 can form a negative pressure inside the shell 1, thereby drawing in external airflow through the air inlet 104 and outputting the airflow into the first airflow channel 101. Under the guidance of the first airflow channel 101, the airflow is finally sent out from the air outlet 103, achieving a stable air outlet function.

[0050] Based on this, the outer periphery of the shell 1 can be understood as the outer surface of the shell 1 in the circumferential direction. By setting the outer periphery of the shell 1 as an arc-shaped gripping surface 3, the shell 1 can form an extended profile with high and low undulations, gradual contraction or expansion along its length direction, thereby providing a fulcrum for the hand to grip, thus making it easier for the user to hold.

[0051] Based on the above configuration, the arc-shaped grip surface 3 located on the outer periphery of the shell 1 allows the shell 1 to conform to the grip contour of the hand, enabling the user to hold the hair dryer stably and comfortably, thus solving the problem of inconvenient hair dryer grip.

[0052] Reference Figure 1 and Figure 2 In some embodiments, the outer peripheral surface of the shell 1 has an arc-shaped concave profile from both ends to the middle to form an arc-shaped gripping surface 3.

[0053] Based on the above settings, a concave arc-shaped grip surface 3 is formed in the middle part of the length direction of the shell 1, thus obtaining a grip structure with varying heights. The arc-shaped grip surface 3 can match the contour of the hand's thumb and forefinger, thus allowing for a comfortable and stable grip on the hair dryer.

[0054] In some embodiments, refer to Figure 2 and Figure 3The cylindrical shell 1 includes an outer shell 11 and an inner shell 12. An arc-shaped grip surface 3 and an air inlet 104 are respectively provided on the outer shell 11. The inner shell 12 is located inside the outer shell 11. A first airflow channel 101 and an air outlet 103 are provided in the inner shell 12. The first airflow channel 101 passes through both ends of the inner shell 12, and the air outlet 103 is located at one end opening of the inner shell 12. The air outlet assembly 2 is provided in the inner shell 12 and is located inside the first airflow channel 101.

[0055] Specifically, both the outer shell 11 and the inner shell 12 are long cylindrical structures, each having a length direction and two ends. Based on this, one end of the outer shell 11 is closed, and the other end is provided with an exposed opening 111. An arc-shaped gripping surface 3 is provided on the outer shell 11. On this basis, an air inlet 104 is provided through the shell wall of the outer shell 11, and the air inlet 104 can allow external air to be supplied to the interior of the outer shell 11.

[0056] In addition, the inner shell 12 is hollow inside and open at both ends. The outer edge dimension of the inner shell 12 is not greater than the inner edge dimension of the outer shell 11, so that the outer shell 11 can be fitted onto the outside of the inner shell 12. Furthermore, the two are connected to each other. It can be understood that the outer shell 11 and the inner shell 12 can be connected to each other by threaded connection, fastening, or by means of threaded fasteners. This ensures that the inner shell 12 and the outer shell 11 are fixed to each other and the structure is not easy to loosen. The specific installation method of the outer shell 11 and the inner shell 12 is not restricted here. By connecting the inner shell 12 and the outer shell 11 to each other, a stable and compact double shell structure can be obtained.

[0057] Furthermore, the hollow area inside the inner shell 12 can form a first airflow channel 101. One end of the inner shell 12 is connected to the external environment through the exposure port 111, and the other end of the inner shell 12 is connected to the interior of the outer shell 11 and communicates with the outside through the air inlet 104. Here, the opening on the inner shell 12 near the exposure port 111 is defined as the air outlet 103.

[0058] At this time, since the air outlet component 2 is located inside the first airflow channel 101, the air outlet component 2 can draw airflow from inside the outer shell 11 into one end of the inner shell 12 and send it out from the air outlet 103 at the other end. During the above process, the air outlet 103 continuously replenishes air inside the outer shell 11, and the inner shell 12 plays a role in further guiding the airflow, so that the airflow can flow stably in the inner shell 12 and achieve a stable air outlet effect.

[0059] Based on the above configuration, the outer shell 11 can serve a shaping function, while the inner shell 12 serves to guide airflow. The two components each perform their own functions. On the one hand, it can reduce the difficulty and cost of setting the arc-shaped grip surface 3 on the cylindrical shell 1. On the other hand, it can make full use of the internal space of the outer shell 11. The cylindrical shell 1 is compact and optimized by adopting a double-layer stacking method, which is ingenious and reasonable.

[0060] Furthermore, a heat insulation cavity is formed between the inner wall of the outer shell 11 and the outer wall of the inner shell 12.

[0061] Specifically, the outer edge size of the inner shell 12 can be set to be smaller than the inner edge size of the outer shell 11, thereby forming a heat insulation cavity between the inner wall of the outer shell 11 and the outer wall of the inner shell 12. At this time, the heat insulation cavity can extend along the length direction and the circumferential direction of the shell 1, thereby slowing down the heat generated by the air outlet assembly 2 to the outer shell 11, so that the user is less likely to be burned when holding the shell 1.

[0062] In some embodiments, refer to Figure 2 and Figure 4 The air inlet 104 includes a first air inlet hole 1041, which is disposed through the end face of the outer shell 11 away from the air outlet 103 and is connected to the first airflow channel 101, and / or a second air inlet hole 1042, which is disposed through the circumferential side wall of the outer shell 11 and is connected to the first airflow channel 101.

[0063] The above solutions include at least the following three scenarios:

[0064] In the first case, the air inlet 104 only includes the first air inlet hole 1041. In this case, the first air inlet hole 1041 can introduce airflow from the end face of the outer casing 11 away from the air inlet 104. In this case, the airflow is not easily blocked by the user's hand, so it can provide external air to the inside of the outer casing 11 relatively stably.

[0065] In the second case, the air inlet 104 only includes the second air inlet hole 1042. The second air inlet hole 1042 can obtain a large intake area by penetrating the circumferential side wall of the housing 11, thus providing more external air to the inside of the housing 11.

[0066] In the third case, the air inlet 104 includes both a first air inlet 1041 and a second air inlet 1042. Based on this, by simultaneously setting both the first air inlet 1041 and the second air inlet 1042, a larger air intake area can be obtained, which can increase the air volume of the hair dryer and improve the user experience.

[0067] Based on the above scheme, by setting the first air inlet 1041 and / or the second air inlet 1042, a stable external airflow can be provided to the user, and the setting method of the air inlet 104 can be adjusted according to actual needs. No specific restrictions are imposed here, and the structural setting method is flexible.

[0068] Furthermore, referring to Figure 2 and Figure 3 ,in Figure 2The black arrow in the middle indicates the direction of airflow. The air inlet 104 also includes a third air inlet 1043, which is disposed through the end face of the outer shell 11 near the air outlet 103. The heat insulation cavity forms a second airflow channel 102, and the second airflow channel 102 is connected to the first airflow channel 101.

[0069] Specifically, the third air inlet 1043 can be combined with the above three situations respectively. The combination and setting of the air inlet 104 will not be described in detail here. At this time, the third air inlet 1043 can further expand the gas inflow area, so that the air volume can be further supplemented. In addition, it can also drive the gas flow in the second airflow channel 102, thereby removing the heat of the heat insulation cavity and cooling the outer shell 11 to prevent the outer shell 11 from overheating and prevent the user's hand from being burned by the outer shell 11.

[0070] Furthermore, a filter screen 4 is provided between the outer shell 11 and the inner shell 12, and the filter screen 4 covers the second airflow channel 102. Specifically, in some embodiments, the filter screen 4 has a ring-shaped structure, the inner shell 12 is inserted into the inner edge of the filter screen 4, and the outer edge of the filter screen 4 is connected to the outer shell 11. Typically, the filter screen 4 can be detachably connected to both the outer shell 11 and the inner shell 12 by means of a snap-fit ​​connection, so as to facilitate disassembly and cleaning. The specific installation method of the filter screen 4 is not limited here.

[0071] At this time, the filter screen 4 has multiple evenly arranged filter holes, which enables the filter screen 4 to filter impurities such as hair in the air, thereby preventing impurities from damaging the air outlet component 2 and ensuring the service life of the structure.

[0072] Continue to refer to Figure 2 and Figure 3 It also includes a noise reduction bracket 5, which is fixedly installed at the end of the inner shell 12 away from the air outlet 103, and the noise reduction bracket 5 is provided with multiple honeycomb holes.

[0073] Specifically, the noise reduction bracket 5 is a mesh structure, which is fixedly installed on the inner shell 12 and covers the end of the inner shell 12 away from the air outlet 103. At this time, the multiple honeycomb holes on the noise reduction bracket 5 can absorb sound waves, thereby playing a noise reduction function, and the user experience of the hair dryer is optimized and improved.

[0074] Furthermore, in some embodiments, when the outer casing 11 is simultaneously provided with a first air inlet 1041, a second air inlet 1042 and a third air inlet 1043, multiple airflow paths will be formed. In order to reduce the possibility of turbulence caused by multiple airflows, an air collecting sleeve 6 is also included.

[0075] Specifically, the air collecting sleeve 6 is hollow inside and open at both ends, and the diameter of its inner wall gradually narrows from one end to the other, forming a protruding profile. At this time, the air collecting sleeve 6 is fixedly installed on the inner shell 12 and located at the end away from the air outlet 103. The end of the air collecting sleeve 6 with a smaller diameter is connected to the inner shell 12. Based on this, along the air outlet path, the diameter of the inner wall of the air collecting sleeve 6 gradually narrows. At the same time, a through hole is provided in the circumferential direction on the side wall of the air collecting sleeve 6, and the first airflow channel 101 and the second airflow channel 102 are interconnected through the through hole.

[0076] Based on the above configuration, the airflow introduced by the first air inlet 1041, the second air inlet 1042, and the third air inlet 1043 accumulates in the heat insulation cavity. The air outlet assembly 2 will form a negative pressure area inside the air collecting sleeve 6. At this time, under the action of air pressure, the airflow further enters the interior of the air collecting sleeve 6 through the through hole. Under the guidance of the gradually narrowing inner wall of the air collecting sleeve 6, it can accelerate the flow and concentrate the flow towards the first airflow channel 101, realizing the directional and concentrated flow effect of the airflow. The possibility of multiple airflows generating turbulence is greatly reduced, and the air outlet action is more stable and efficient.

[0077] Furthermore, refer to Figure 2 and Figure 3 It also includes a PCB board 7, which is disposed inside the housing 11 and located at the end of the housing 11 away from the air outlet 103. An obstacle hole 71 is provided on the PCB board 7. The obstacle hole 71 is disposed opposite to the first air inlet 1041. The obstacle hole 71 is used to connect the first air inlet 1041 and the first airflow channel 101.

[0078] Specifically, the air outlet assembly 2 usually requires a control element to drive it. The control element usually includes a main control chip, which is usually mounted on the PCB board 7. The PCB board 7 also has a circuit module, which is used to connect to the mains power and convert it into a suitable voltage so that the control element and the air outlet assembly 2 can obtain power. The control element can then control the start and stop of the air outlet assembly 2 to perform functions such as heating or air outlet. The specific principle of the control element will not be elaborated here.

[0079] Based on this, by setting the PCB board 7 at the end of the housing 11 away from the air outlet 103, the empty space of the housing 11 can be fully utilized, resulting in a compact structure. In addition, by opening a clearance hole 71 on the PCB board 7 that is opposite to the first air inlet 104, airflow can be maintained while achieving a compact setup, thus meeting the air intake requirements.

[0080] Furthermore, referring to Figure 5One end of the cylindrical shell 1 is provided with an air outlet 8, and the air outlet 8 is provided with an air outlet hole 81 that communicates with the air outlet 103. The air outlet 8 can be any one of the following: air collector, air diffuser, air smoother, or air styling nozzle.

[0081] The air outlet 8 can be fixedly installed on the shell 1, or it can be installed on the shell 1 in a detachable manner. When the air outlet 8 is installed on the shell 1 in a detachable manner, the user can replace different air outlets 8 according to the actual care needs.

[0082] Typically, to achieve the detachable function, a first fastener can be provided at the air outlet 8, and a second fastener can be provided inside the housing 1. The detachable connection of the air outlet 8 is achieved by the interlocking action between the first and second fasteners. The specific installation method of the air outlet 8 is not limited here. In other embodiments, magnetic attraction, threaded connection and other disassembly and assembly methods can also be used. Any method that can achieve the detachable connection between the air outlet 8 and the housing 1 should be included in the scope of interpretation of this application.

[0083] Based on the above settings, different air outlets 8 can be set to enable the hair dryer to achieve different care functions, such as concentrated air, gentle air, smoothing, and styling, thus further optimizing and improving the user experience.

[0084] In some embodiments, refer to Figure 2 The air outlet assembly 2 includes a fan 22 and a heating element 21. The fan 22 is disposed in the shell 1, and the heating element 21 is disposed in the shell 1 and located in the first airflow channel 101.

[0085] Specifically, the fan 22 can generate directional airflow, and the heating element 21 can be a heating wire. Both the fan 22 and the heating element 21 are connected to a control element, which is used to control the start and stop of the fan 22 and the heating element 21. In one mode, the control element only drives the fan 22 to start, which blows out cold air. In another mode, the control element drives the fan 22 and the heating element 21 to start simultaneously, which blows out hot air, making it suitable for different usage scenarios.

[0086] The hair dryer provided in this embodiment has the following beneficial effects:

[0087] 1. By setting an arc-shaped grip surface 3 on the outer shell 11, it is easier for users to hold and use, and the arc-shaped outer shell 11 makes the hair dryer look more beautiful.

[0088] 2. The third air inlet 1043 and the air outlet 103 are located on the same side, which makes full use of the outer area without the hair dryer and makes it easier to reduce the volume occupied by the hair dryer.

[0089] 3. The outer shell 11 is fitted on the outside of the inner shell 12, and the outer shell 11 and the inner shell 12 do not contact each other. The inner shell 12 can prevent heat from being transferred to the outer shell 11, reducing the possibility of the user being burned when holding the outer shell 11.

[0090] Example 2:

[0091] Based on Embodiment 1, features not explained in this embodiment will be explained using the methods described in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that: (Refer to...) Figure 6 The outer periphery of the cylindrical shell 1 has an arc-shaped tapering profile from one end near the air outlet 103 to the other end, forming an arc-shaped gripping surface 3.

[0092] Specifically, the outer shell 11 is designed with an arc-shaped tapering profile from one end near the air outlet 103 to the other, forming a cylindrical shell 1 profile similar to an umbrella, thus achieving the function of easy gripping.

[0093] This embodiment provides a handleless hair dryer structure that is easy to hold.

[0094] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hair dryer, characterized in that, include: A cylindrical shell (1) is provided with an arc-shaped gripping surface (3) on its outer periphery for a user to hold. The cylindrical shell (1) has a first airflow channel (101) inside, and the cylindrical shell (1) is provided with an air outlet (103) and an air inlet (104) connected to the first airflow channel (101). The air outlet (103) is located at one end of the cylindrical shell (1). And an air outlet assembly (2) is disposed inside the cylindrical shell (1), and the air outlet assembly (2) delivers airflow to the air outlet (103) via the first airflow channel (101).

2. The hair dryer according to claim 1, characterized in that, The outer circumferential surface of the cylindrical shell (1) has an arc-shaped concave profile from both ends to the middle to form the arc-shaped gripping surface (3); Alternatively, the outer peripheral surface of the shell (1) has an arc-shaped tapering profile from one end near the air outlet (103) to the other end to form the arc-shaped grip surface (3).

3. The hair dryer according to claim 1 or 2, characterized in that, The cylindrical shell (1) includes: The outer shell (11), the arc-shaped grip surface (3) and the air inlet (104) are respectively disposed on the outer shell (11); The inner shell (12) is disposed inside the outer shell (11), the first airflow channel (101) and the air outlet (103) are disposed in the inner shell (12), the first airflow channel (101) passes through both ends of the inner shell (12), and the air outlet (103) is located at one end opening of the inner shell (12), and the air outlet assembly (2) is disposed in the inner shell (12) and located inside the first airflow channel (101); A heat insulation cavity is formed between the inner wall of the outer shell (11) and the outer wall of the inner shell (12).

4. The hair dryer according to claim 3, characterized in that, The air inlet (104) includes: The first air inlet (1041) is disposed through the end face of the outer shell (11) away from the air outlet (103) and is connected to the first airflow channel (101); And / or a second air inlet (1042), which is disposed through the circumferential sidewall of the housing (11) and communicates with the first airflow channel (101).

5. The hair dryer according to claim 4, characterized in that, The air inlet (104) also includes a third air inlet hole (1043), which is disposed through the end face of the outer shell (11) near the air outlet (103). A second airflow channel (102) is formed in the heat insulation cavity, and the second airflow channel (102) is connected to the first airflow channel (101).

6. The hair dryer according to claim 5, characterized in that, A filter screen (4) is provided between the outer shell (11) and the inner shell (12), and the filter screen (4) covers the second airflow channel (102).

7. The hair dryer according to claim 3, characterized in that, It also includes a noise reduction bracket (5), which is fixedly installed at the end of the inner shell (12) away from the air outlet (103), and the noise reduction bracket (5) is provided with multiple honeycomb holes.

8. The hair dryer according to claim 4, characterized in that, It also includes a PCB board (7), which is disposed inside the housing (11) and located at the end of the housing (11) away from the air outlet (103). The PCB board (7) has a clearance hole (71) which is disposed opposite to the first air inlet (1041). The clearance hole (71) is used to connect the first air inlet (1041) and the first airflow channel (101).

9. The hair dryer according to claim 1, characterized in that, One end of the cylindrical shell (1) is provided with an air outlet (8), and the air outlet (8) is provided with an air outlet hole (81) that communicates with the air outlet (103); The air outlet (8) is any one of the following: air collector, air diffuser, air smoother, and air styling nozzle.

10. The hair dryer according to claim 1, characterized in that, The air outlet assembly (2) includes: A fan (22) is installed in the cylindrical shell (1); A heating element (21) is disposed in the shell (1) and located in the first airflow channel (101).

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