Hair dryer

Abstract

The utility model provides a kind of hair dryer, it has air duct and the handle connected with air duct, air duct has oppositely arranged air outlet end and air inlet end, the main flow passage being set through air outlet end and air inlet end, secondary flow passage is formed with the main flow passage intercommunication in handle, hair dryer further has the flow guide piece and air inlet assembly being set in air duct, air inlet assembly is set in the air inlet end of air duct, and it has confluence chamber, confluence chamber is interconnected with air outlet end, flow guide piece is located in the side of air inlet assembly close to air outlet end, and it is formed with the several air vents being penetrated along air outlet direction, air vent is for from the wind flow in confluence chamber in secondary flow passage, and it is gathered in confluence chamber with the wind from air inlet end into air inlet assembly inside.The hair dryer of the utility model can effectively reduce the mutual interference between the airflow from different positions into air duct.

Description

Technical Field

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

[0002] In daily life, people usually blow-dry their hair after washing it; especially in cold winter weather, wet hair is even more difficult to dry completely. The invention of the hair dryer solved this problem. However, most hair dryers on the market currently only have a single airflow channel on the nozzle, using a rear air intake and front air exhaust method to achieve air intake and exhaust, which results in a relatively low overall airflow speed.

[0003] The advent of high-speed hair dryers can increase airflow. Traditional high-speed hair dryers have air inlets on both the nozzle and the handle to form a main flow channel in the nozzle and a secondary flow channel in the handle. At the same time, the airflow in the secondary flow channel helps to dissipate heat from the PCB board, electronic control and other components in the handle to cool the handle. However, the airflow in the secondary flow channel will interfere with each other at the intersection of the airflow in the main flow channel, which can easily generate turbulence and noise.

[0004] Therefore, it is necessary to improve existing hair dryers to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a hair dryer that can effectively reduce mutual interference of airflows entering the blower from different positions.

[0006] To achieve the above objectives, this utility model provides a hair dryer, which has a blower tube and a handle connected to the blower tube. The blower tube has an air outlet end and an air inlet end arranged opposite to each other, and a main flow channel that runs through the air outlet end and the air inlet end. A secondary flow channel that communicates with the main flow channel is formed inside the handle. The hair dryer also has a guide component and an air inlet assembly disposed inside the blower tube. The air inlet assembly is disposed at the air inlet end of the blower tube and has a converging cavity that communicates with the air outlet end. The guide component is located on the side of the air inlet assembly near the air outlet end and has a plurality of ventilation openings that run through it along the air outlet direction. The ventilation openings allow air from the secondary flow channel to flow into the converging cavity and converge with the air entering the air inlet assembly from the air inlet end in the converging cavity.

[0007] In this way, by allowing the airflow in the secondary channel to enter the interior of the air inlet assembly through the guide, the problem of the airflow in the secondary channel affecting the airflow in the main channel is avoided by merging with the airflow entering from the air inlet end on the radial outside of the air inlet assembly, thereby reducing the turbulence of the fluid and reducing noise.

[0008] As a further improvement of this utility model, in the radial direction of the air duct, the vent is located within the inner diameter range of the end of the air inlet assembly near the air outlet.

[0009] In this way, the vent faces the end of the air intake assembly near the air outlet, providing a direct path for the airflow in the secondary channel. The airflow in the secondary channel can enter the air intake assembly more directly through the vent, without changing direction or detouring, thus shortening the flow path. At the same time, since the airflow does not need to detour between the inner wall of the air duct 1 and the guide 3 or behind the guide 3, the complex vortices and friction caused by detouring are avoided, thereby reducing airflow loss.

[0010] As a further improvement of this utility model, the guide member connects the inner wall surface of the air duct with the side end face of the air inlet assembly near the air outlet to achieve connection.

[0011] In this way, by connecting the inner wall of the air duct to the side end of the air inlet assembly through the guide component, the unexpected airflow channel between the inside of the air duct and the external environment is isolated, preventing airflow from leaking from the gap between the guide component and the inner wall of the air duct and the side end of the air inlet assembly. This avoids whistling caused by airflow leakage from the gap, fundamentally eliminating the source of turbulent noise, suppressing airflow separation and vortex oscillation, thereby reducing noise. At the same time, it ensures that the airflow in the secondary channel can merge with the airflow in the main channel through the vent according to the predetermined path, improving the utilization rate of airflow.

[0012] As a further improvement of this utility model, the guide member includes a first connecting wall and a second connecting wall. The first connecting wall is located on the radial outer side of the secondary flow channel and is connected to the inner wall surface of the air duct. The second connecting wall is annular and is connected to the side end face of the air inlet assembly near the air outlet end.

[0013] Thus, the guide component is connected to the air duct and the air inlet assembly respectively through the first and second connecting walls, resulting in a higher bonding strength. The first connecting wall is located on the radial outer side of the secondary flow channel, which can prevent the first connecting wall from directly bearing the impact force of the airflow from the secondary flow channel. The second connecting wall is connected to the side end face of the air inlet assembly near the air outlet through the annular second connecting wall, thereby increasing the effective bonding area and making the guide component less prone to fatigue due to airflow impact force or unilateral or single-point bonding force. The first connecting wall is located on the radial outer side of the secondary flow channel to avoid blocking and interfering with the airflow flowing out of the secondary flow channel. The second connecting wall is annular to achieve a reliable and balanced connection on the periphery of the main flow channel.

[0014] As a further improvement of this utility model, the ventilation openings are opened on the second connecting wall and are evenly arranged in the circumferential direction.

[0015] Thus, by setting ventilation openings evenly distributed in the circumferential direction on the second connecting wall, the airflow is balanced in all directions, avoiding local high-pressure or low-pressure areas, reducing the generation of turbulence and eddies, thereby reducing energy loss and noise.

[0016] As a further improvement of this utility model, the air inlet assembly includes a circumferential wall, an mounting wall and an end wall disposed opposite to each other on both sides of the circumferential wall in the air outlet direction, the end wall and the circumferential wall are connected and surround to form a confluence cavity, the second connecting wall is connected to the side end face of the mounting wall near the air outlet end, and the circumferential wall is provided with an air inlet grille.

[0017] In this way, by using the mounting wall located near the air outlet to connect with the air guide, the airflow is evenly drawn into the confluence cavity from the air inlet grille set on the circumferential wall, thereby eliminating air inlet eccentricity, ensuring a balanced pressure distribution in the main flow channel, and reducing turbulent energy loss.

[0018] As a further improvement of this utility model, the guide member also has a connecting wall that connects the first connecting wall and the second connecting wall, and the blower also has a light-emitting element disposed in the blower tube, the connecting wall forming a receiving area for accommodating the light-emitting element, and the light-emitting element being detachably connected to the connecting wall.

[0019] In this way, a receiving area for accommodating the light-emitting element is formed on the connecting wall between the first and second connecting walls, and the light-emitting element is detachably installed. This not only enables status visualization and power or fault indication, but also saves space and facilitates the disassembly, repair and replacement of the light-emitting element.

[0020] As a further improvement of this utility model, the connecting wall includes a first connecting part and a second connecting part that are connected to each other. The receiving area is formed on the radially outer side of the second connecting part and is located on the side of the first connecting part away from the air outlet. The blower also has a light-diffusing element fixed in the air duct. In the air outlet direction, the light-emitting element is disposed between the light-diffusing element and the air guide element.

[0021] Thus, by placing the light-emitting element between the light-diffusing element and the air-guiding element, so that the air-guiding element is located on the side of the light-emitting element closer to the air outlet, the airflow in the secondary flow channel is guided; the light-emitting element and the light-diffusing element are placed on the side of the air-guiding element away from the air outlet, so that the light-diffusing element scatters light towards the part near the air inlet, and the light-diffusing element makes the light emitted by the light-emitting element present a uniform and soft ambient light.

[0022] As a further improvement of this utility model, the hair dryer also has a mounting bracket disposed inside the air duct and a drive component disposed inside the mounting bracket. The drive component draws air from the air inlet end into the main flow channel and draws air from the handle into the secondary flow channel and blows it out from the air outlet end. The mounting bracket is provided with a notch that connects the vent to the secondary flow channel.

[0023] Thus, by setting a notch on the mounting bracket of the drive component, the vent is connected to the secondary flow channel. The drive component is used to guide the airflow drawn into the secondary flow channel into the main flow channel through the notch and the vent in sequence. This causes the airflow in the secondary flow channel with a larger cross-sectional area to generate an acceleration effect when it passes through the notch and the vent with a smaller cross-sectional area, thereby increasing the speed of the airflow after passing through the guide and thus increasing the airflow speed at the outlet.

[0024] As a further improvement of this utility model, the notch is formed by recessing from the end face of the mounting bracket near the air inlet towards the direction away from the air inlet, and is set one-to-one with the vent. Each notch and its corresponding vent are aligned in the air outlet direction.

[0025] In this way, the secondary flow channel of the blower does not require special pipeline design. It can be guided by the notch formed at the end of the mounting bracket. The notch is aligned with the vent to guide the airflow smoothly, reduce noise, and avoid friction loss caused by the increased flow path due to special pipeline design, as well as air leakage between assembly gaps, thereby reducing airflow loss.

[0026] As a further improvement of this utility model, the mounting bracket also has a plurality of first limiting parts disposed on one side near the air inlet end, and the guide member is provided with a second limiting part that cooperates with the first limiting parts.

[0027] In this way, the mounting bracket and the guide component achieve precise assembly guidance and installation positioning through the cooperation of the first and second limiting parts, thereby improving seismic resistance and preventing loosening.

[0028] As a further improvement of this utility model, the outer periphery of the guide member also has a fixing structure, which is connected to the air duct.

[0029] In this way, the guide component is connected to the air duct through a fixed structure, thereby dispersing the stress to the air duct, thus improving the impact resistance and preventing vibration or loosening.

[0030] As a further improvement of this utility model, the handle is provided with an air inlet cover, and a power cord is provided at the tail of the handle. The air inlet cover is provided with several air inlet holes, which are connected to the secondary flow channel to allow outside air to enter the secondary flow channel. The air inlet cover is also provided with several blind holes, which are located on the side closer to the power cord than the blind holes.

[0031] Thus, the air intake holes on the air intake cover are used to draw air in from the bottom of the handle to dissipate heat from the PCB board, electronic control and other components inside the handle, and converge with the airflow entering from the air duct; due to the blind hole design, the volume of the air intake cover can be increased while setting fewer air intake holes, and the friction when holding it can be increased, making it easier for users to pick up; at the same time, it can provide a more comfortable grip and avoid the discomfort caused by sharp edges or too many through holes.

[0032] The beneficial effects of this utility model are as follows: The blower of this utility model allows the airflow in the secondary flow channel to enter the interior of the air inlet assembly through the vent on the guide component, thereby avoiding the problem of the airflow in the secondary flow channel affecting the airflow in the main flow channel by merging with the airflow entering from the air inlet end on the radial outer side of the air inlet assembly, thus reducing the turbulence of the fluid and reducing noise. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of the hair dryer of this utility model;

[0034] Figure 2 yes Figure 1 A partially exploded view of the hair dryer shown.

[0035] Figure 3 yes Figure 2 The hair dryer shown is a cross-sectional view along line AA.

[0036] Figure 4 Figure 2 A perspective view of the air guide of the hair dryer shown;

[0037] Figure 5 yes Figure 4 Another view of the flow guide shown;

[0038] Figure 6 yes Figure 1 The hair dryer shown is a cross-sectional view along line BB after the drive assembly has been removed.

[0039] Figure 7 yes Figure 6 The image shown is an exploded view of the hair dryer after the shock-absorbing ring has been removed.

[0040] Figure 8 yes Figure 7 A partial cross-sectional view of the assembled hair dryer shown.

[0041] Figure 9 yes Figure 1 Enlarged view of point C in the middle.

[0042] Figure 10 yes Figure 9 A sectional view of the area shown.

[0043] In the picture:

[0044] 100. Hair dryer;

[0045] 1. Air duct; 101. Air outlet; 102. Air inlet; 103. Main air duct; 104. Clip-on part; 11. Duct body; 12. Inner wall surface; 13. Rear cover assembly; 131. Outer shell; 132. Sunshade;

[0046] 2. Handle; 201. Secondary flow channel; 21. Air inlet shroud; 212. Air inlet hole; 213. Blind hole; 23. Power cord;

[0047] 3. Guide component; 301. Ventilation opening; 31. First connecting wall; 32. Second connecting wall; 34. Connecting wall; 340. Receiving area; 341. First connecting part; 342. Second connecting part; 35. Second limiting part; 351. First stop part; 352. Second stop part; 36. Fixing structure;

[0048] 4. Air intake assembly; 401. Combination cavity; 402. Side end face; 41. Circumferential wall; 412. Air intake grille; 42. Mounting wall; 43. End wall;

[0049] 5. Light-emitting components;

[0050] 6. Light-diffusing components;

[0051] 7. Mounting bracket; 71. Notch; 72. First limiting part;

[0052] 8. Driver components;

[0053] 9. Shock absorber ring. Detailed Implementation

[0054] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0055] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0056] Figures 1 to 10The image shows an embodiment of the hair dryer 100 of this utility model. In this utility model, the hair dryer 100 has a blower tube 1 and a handle 2 connected to the blower tube 1. The blower tube 1 has an air outlet 101 and an air inlet 102 arranged opposite to each other, and a main flow channel 103 that passes through the air outlet 101 and the air inlet 102. A secondary flow channel 201 that communicates with the main flow channel 103 is formed inside the handle 2.

[0057] In this embodiment, the air duct 1 includes a cylinder 11 and a rear cover assembly 13 assembled on the side of the cylinder 1 away from the air outlet 101. The rear cover assembly 13 includes an outer shell 131 and a light shield 132 located radially inside the outer shell 131.

[0058] The hair dryer 100 also has a guide 3 and an air inlet assembly 4 disposed in the air duct 1. The air inlet assembly 4 is disposed at the air inlet end 102 of the air duct 1 and has a confluence cavity 401. The confluence cavity 401 is connected to the air outlet end 101. The guide 3 is located on the side of the air inlet assembly 4 near the air outlet end 101 and has a plurality of vents 301 that pass through it along the air outlet direction. The vents 301 allow air from the secondary flow channel 201 to flow into the confluence cavity 401 and converge with the air entering the air inlet assembly 4 from the air inlet end 102 in the confluence cavity 401.

[0059] In this way, by allowing the airflow in the secondary channel 201 to enter the interior of the air inlet assembly 4 through the vent 301 on the guide member 3, the problem of the airflow in the secondary channel 201 affecting the airflow in the main channel 103 is avoided by merging with the airflow entering from the air inlet end 102 on the radial outer side of the air inlet assembly 4, thereby reducing noise and minimizing fluid turbulence.

[0060] like Figure 8 As shown, in the radial direction of the air duct 1, the vent 301 is located within the inner diameter range of the end of the air inlet assembly 4 near the air outlet 101. This ensures that the vent 301 faces the end of the air inlet assembly 4 near the air outlet 101, providing a direct path for the airflow within the secondary flow channel 201. The airflow within the secondary flow channel 201 can directly enter the interior of the air inlet assembly 4 through the vent 301 without changing direction or detouring, thus shortening the flow path. Simultaneously, since the airflow does not need to detour between the inner wall of the air duct 1 and the guide member 3 or behind the guide member 3, complex vortices and friction caused by detouring are avoided, thereby reducing airflow loss.

[0061] The guide member 3 connects the inner wall surface 12 of the air duct 1 to the side end face 402 of the air inlet assembly 4 near the air outlet 101. In this way, by connecting the inner wall surface 12 of the air duct 1 to the side end face 402 of the air inlet assembly 4 via the guide member 3, an unintended airflow channel between the inside of the air duct 1 and the external environment is isolated. This prevents airflow from leaking through the gap between the guide member 3 and the inner wall surface 12 of the air duct 1 and the side end face of the air inlet assembly 4, avoiding whistling caused by leaking airflow through the gap. This fundamentally eliminates the source of turbulent noise, suppresses airflow separation and vortex oscillation, thereby reducing noise. Simultaneously, it ensures that the airflow in the secondary channel 201 can merge with the airflow in the main channel 103 via the vent 301 according to a predetermined path, improving airflow utilization.

[0062] Specifically, please refer to Figures 3 to 7 As shown, in this embodiment, the flow guide 3 includes a first connecting wall 31 and a second connecting wall 32. The first connecting wall 31 is located radially outside the secondary flow channel 201 and is connected to the inner wall surface 12 of the air duct 1; the second connecting wall 32 is annular and is connected to the side end face of the air inlet assembly 4 near the air outlet end 101.

[0063] Thus, the guide component 3 is connected to the air duct 1 and the air inlet assembly 4 respectively through the first and second connecting walls 31 and 32, resulting in a higher bonding strength. The first connecting wall 31 is located on the radial outer side of the secondary flow channel 201, which can prevent the first connecting wall 31 from directly bearing the impact force of the airflow from the secondary flow channel 201. The second connecting wall 32 is connected to the side end face of the air inlet assembly 4 near the air outlet 101, thereby increasing the effective bonding area and making the guide component 3 less prone to fatigue due to airflow impact force or unilateral or single-point bonding force. The first connecting wall 31 is located on the radial outer side of the secondary flow channel 201 to avoid blocking and interfering with the airflow flowing out of the secondary flow channel 201. The second connecting wall 32 is annular to achieve a reliable and balanced connection on the periphery of the main flow channel 103.

[0064] Ventilation openings 301 are formed on the second connecting wall 32 and are evenly distributed along the circumferential direction. In this way, by setting ventilation openings 301 evenly distributed along the circumferential direction on the second connecting wall 32, the airflow balance in all directions is ensured, local high-pressure or low-pressure areas are avoided, the generation of turbulence and eddies is reduced, thereby reducing energy loss and noise.

[0065] In some embodiments, the guide member 3 further includes a connecting wall 34 that connects the first connecting wall 31 and the second connecting wall 32. The connecting wall 34 includes a first connecting portion 341 and a second connecting portion 342 that are interconnected, and the connecting wall 34 forms a receiving area 340. The receiving area 340 is formed radially outward of the second connecting portion 342 and is located on the side of the first connecting portion 341 away from the air outlet end 101.

[0066] Please refer to Figures 2 to 3 , Figures 6 to 7 As shown, the air inlet assembly 4 includes a circumferential wall 41, a mounting wall 42 and an end wall 43 disposed opposite to each other on both sides of the circumferential wall 41 in the air outlet direction. The end wall 43 and the circumferential wall 41 are connected and enclosed to form a confluence cavity 401. The second connecting wall 32 is connected to the side end face 402 of the mounting wall 42 near the air outlet end 101. The circumferential wall 41 is provided with an air inlet grille 412.

[0067] In this way, by using the mounting wall 42 located near the air outlet 101 to connect with the guide member 3, the airflow is evenly drawn into the confluence cavity 401 from the air inlet grille 412 located on the circumferential wall 41 under the negative pressure of the drive component 8, thereby eliminating air inlet eccentricity, ensuring a balanced pressure distribution in the main flow channel 103, and reducing turbulent energy loss.

[0068] The hair dryer 100 also has a light-emitting element 5 disposed within the air duct 1. In this embodiment, the hair dryer 100 also has a light-diffusing element 6 fixed within the air duct 1. The connecting wall 34 is formed to accommodate the light-emitting element 5 within a receiving area 340 formed by the connecting wall 34, and the light-emitting element 5 is detachably connected to the connecting wall 34.

[0069] Thus, a receiving area 340 for accommodating the light-emitting element 5 is formed on the connecting wall 34 between the first and second connecting walls 31 and 32, and the light-emitting element 5 is detachably installed. This not only enables status visualization and power or fault indication, but also saves space and facilitates the disassembly, repair and replacement of the light-emitting element 6.

[0070] In the air outlet direction, the light-emitting element 5 is positioned between the light-diffusing element 6 and the airflow guide element 3. The outer casing 131 is semi-transparent and covers the periphery of the light-diffusing element 6.

[0071] Thus, by placing the light-emitting element 5 between the light-diffusing element 6 and the air-guiding element 3, with the air-guiding element 3 positioned on the side of the light-emitting element 5 closer to the air outlet 101, the airflow within the secondary flow channel 201 is guided. The light-emitting element 5 and the light-diffusing element 6 are positioned on the side of the air-guiding element 3 away from the air outlet 101, thereby allowing the light-diffusing element 6 to scatter light towards the area near the air inlet 101. The light-diffusing element 6 makes the light emitted by the light-emitting element 5 present a uniform and soft ambient light, such as softening the direct light emitted by the light-emitting element 5, reducing the glare when the user looks directly at it, and improving visual comfort; or it can achieve dynamic lighting effects such as gradients and breathing lights. At the same time, the light-diffusing element 6 can also provide further protection for the light-emitting element 5, especially in humid environments, where the light-diffusing element 6 can act as a physical barrier to prevent dust, fog, etc., from entering the interior of the light-emitting element 5, extending the lifespan of the LEDs or other types of lamp beads installed on the light-emitting element 5.

[0072] In this embodiment, both the light-emitting element 5 and the light-diffusing element 6 are ring-shaped. Setting the light-emitting element 5 and the light-diffusing element 6 as rings is beneficial to the uniform diffusion of light, avoids hot spots or glare, and also helps to save space, making the overall structure more compact.

[0073] like Figure 3 , Figures 6 to 8 As shown, in this embodiment, the hair dryer 100 further includes a mounting bracket 7 disposed within the air duct 1 and a drive assembly 8 disposed within the mounting bracket 7. The drive assembly 8 draws air from the air inlet 102 into the main flow channel 103 and draws air from the handle 2 into the secondary flow channel 201, and blows it out from the air outlet 101. The mounting bracket 7 has a notch 71 that connects the vent 301 to the secondary flow channel 201. In this embodiment, the drive assembly 8 includes a fan and a motor. When the motor is energized, it drives the fan to rotate at high speed, thereby generating negative pressure at the fan inlet, which allows the drive assembly 8 to draw outside air into the air duct 1 through the negative pressure.

[0074] Thus, by providing a notch 71 on the mounting bracket 7 of the drive assembly 8, the vent 301 is connected to the secondary flow channel 201. The drive assembly 8 uses negative pressure to draw in the airflow into the secondary flow channel 201, which then passes through the notch 71 and the vent 301 into the main flow channel. This causes the airflow in the secondary flow channel 201, which has a larger cross-sectional area, to have an acceleration effect when passing through the notch 701 and the vent 301, which has a smaller cross-sectional area. This increases the speed of the airflow after passing through the guide 3, thereby increasing the airflow speed at the outlet 101.

[0075] In this embodiment, the hair dryer 100 also has a shock-absorbing ring 9 located radially between the drive assembly 8 and the mounting bracket 7. The shock-absorbing ring 9 is disposed inside the mounting bracket 7 and surrounds the drive assembly 8 radially outward. The shock-absorbing ring 9 reduces the vibration transmission of the drive assembly 8 during operation, thereby preventing vibration from being transmitted to the air tube 1 of the hair dryer 100, which would cause noise and hand discomfort, and improve the user experience.

[0076] The notch 71 is formed by recessing from the end face of the mounting bracket 7 near the air inlet 102 toward the direction away from the air inlet 102, and is provided in a one-to-one correspondence with the vent 301. Each notch 71 and its corresponding vent 301 are aligned in the air outlet direction.

[0077] In this way, the secondary flow channel 201 of the blower 100 does not require special pipeline design. It can be guided by the notch 71 formed at the end of the mounting bracket 7. The notch 71 is aligned with the vent 301 to guide the airflow smoothly, reduce noise, avoid friction loss caused by the lengthened flow path due to special pipeline design, and reduce airflow leakage between assembly gaps, thereby reducing airflow loss.

[0078] The mounting bracket 7 also has several first limiting portions 72 disposed on one side near the air inlet end 102, and the guide member 3 is provided with second limiting portions 35 that cooperate with the first limiting portions 72. In this way, the mounting bracket 7 and the guide member 3 achieve precise assembly guidance and installation positioning through the cooperation of the first and second limiting portions 72 and 35, thereby improving the seismic resistance and preventing loosening.

[0079] Specifically, in this embodiment, similar to notch 71, the first limiting portion 72 is a recess formed from the end face of the mounting bracket 7 near the air inlet end 102 toward the direction away from the air inlet end 102; the second limiting portion 35 is a protrusion protruding inside the guide member 3. The second limiting portion 35 includes a first stop portion 351 and a second stop portion 352 connected to the first stop portion 351. The first stop portions 351 are intermittently arranged in the circumferential direction and are sleeved on the radially outer side of the mounting bracket 7 to achieve radial limiting, thereby forming a flexible buffer unit through the intermittently arranged first stop portions 351 to absorb vibration energy and prevent radial movement generated when the drive component 8 starts, stops, or vibrates. The second stop portion 352 is located radially inner side of the first stop portion 351 and is inserted into the corresponding first limiting portion 72 to achieve circumferential limiting, thereby forming a tenon and mortise structure for torque transmission and preventing torque deflection.

[0080] The outer periphery of the guide member 3 also has a fixing structure 36, which is connected to the air duct 1. In this way, the guide member 3 is connected to the air duct 1 through the fixing structure 36, thereby dispersing stress to the air duct 1, thus improving the impact resistance and preventing vibration or loosening.

[0081] Specifically, in this embodiment, the fixing structure 36 is disposed on the side of the guide member 3 near the air outlet 101, and cooperates with the buckle portion 104 protruding on the inner wall of the air duct 1 to connect the guide member 3 to the air duct 1.

[0082] Please refer to Figure 9 and Figure 10 As shown, in this embodiment, the handle 2 is provided with an air inlet cover 21, and a power cord 23 is provided at the tail of the handle 2. The air inlet cover 21 is provided with several air inlet holes 212 and several blind holes 213. The air inlet holes 212 are connected to the secondary flow channel 201 to allow outside air to enter the secondary flow channel 201. Compared with the blind holes 213, the air inlet holes 212 are located on the side closer to the power cord 23.

[0083] Thus, the air inlet 212 is used to draw air in from the bottom area of ​​the handle 2 to dissipate heat for the PCB board, electronic control and other components inside the handle 2, and to converge with the airflow entering from the air duct 1; due to the setting of the blind hole 213, while setting fewer air inlets 212, the volume of the air inlet cover 21 can be increased, and the friction when holding can be increased, making it easier for the user to pick up; at the same time, it can provide a more comfortable grip and avoid discomfort caused by sharp edges or too many through holes.

[0084] In summary, the blower 100 of this utility model allows the airflow in the secondary flow channel 201 to enter the interior of the air inlet assembly 4 through the vent 301 on the guide member 3, thereby avoiding the problem of the airflow in the secondary flow channel 201 affecting the airflow in the main flow channel 103 by merging with the airflow entering from the air inlet end 102 on the radial outer side of the air inlet assembly 4, thus reducing the turbulence of the fluid and reducing noise.

[0085] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0086] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A hair dryer comprising a blower barrel and a handle connected to the blower barrel, the blower barrel having an air outlet and an air inlet disposed opposite to each other, and a main flow channel extending through the air outlet and the air inlet, the handle having a secondary flow channel communicating with the main flow channel, characterized in that, The hair dryer also has a guide and an air inlet assembly disposed within the air duct. The air inlet assembly is disposed at the air inlet end of the air duct and has a converging cavity. The converging cavity is connected to the air outlet end. The guide is located on the side of the air inlet assembly near the air outlet end and has a plurality of ventilation openings that pass through it along the air outlet direction. The ventilation openings allow air from the secondary flow channel to flow into the converging cavity and converge with the air entering the air inlet assembly from the air inlet end within the converging cavity.

2. The hair dryer according to claim 1, characterized in that, In the radial direction of the air duct, the vent is located within the inner diameter range of the end of the air inlet assembly near the air outlet.

3. The hair dryer according to claim 2, characterized in that, The guide member connects the inner wall surface of the air duct to the side end face of the air inlet assembly near the air outlet to achieve connection.

4. The hair dryer according to claim 3, characterized in that, The flow guide includes a first connecting wall and a second connecting wall. The first connecting wall is located radially outside the secondary flow channel and is connected to the inner wall surface of the air duct. The second connecting wall is annular and is connected to the side end face of the air inlet assembly near the air outlet.

5. The hair dryer according to claim 4, characterized in that, The ventilation openings are located on the second connecting wall and are evenly distributed along the circumferential direction.

6. The hair dryer according to claim 4, characterized in that, The air inlet assembly includes a circumferential wall, a mounting wall and an end wall disposed opposite to each other on both sides of the circumferential wall in the air outlet direction, the end wall and the circumferential wall being connected and enclosing to form the confluence cavity, the second connecting wall being connected to the side end face of the mounting wall near the air outlet end, and the circumferential wall being provided with an air inlet grille.

7. The hair dryer according to claim 4, characterized in that, The flow guide also has a connecting wall that connects the first connecting wall and the second connecting wall, and the blower also has a light-emitting element disposed in the blower tube. The connecting wall forms a receiving area for accommodating the light-emitting element, and the light-emitting element is detachably connected to the connecting wall.

8. The hair dryer according to claim 7, characterized in that, The connecting wall includes a first connecting part and a second connecting part that are connected to each other. The receiving area is formed on the radially outer side of the second connecting part and is located on the side of the first connecting part away from the air outlet. The hair dryer also has a light-diffusing element fixed in the air duct. In the air outlet direction, the light-emitting element is disposed between the light-diffusing element and the air guide element.

9. The hair dryer according to claim 2, characterized in that, The hair dryer also has a mounting bracket disposed inside the air duct and a drive assembly disposed inside the mounting bracket. The drive assembly draws air from the air inlet into the main flow channel and draws air from the handle into the secondary flow channel and blows it out from the air outlet. The mounting bracket has a notch that connects the vent to the secondary flow channel.

10. The hair dryer according to claim 9, characterized in that, The notch is formed by a recess from the end face of the mounting bracket near the air inlet towards the direction away from the air inlet, and is provided in a one-to-one correspondence with the vent. Each notch and its corresponding vent are aligned in the air outlet direction.

11. The hair dryer according to claim 9, characterized in that, The mounting bracket also has a plurality of first limiting portions disposed on one side of it near the air inlet end, and the air guide is provided with a second limiting portion that cooperates with the first limiting portions.

12. The hair dryer according to any one of claims 1 to 10, characterized in that, The outer periphery of the guide member also has a fixing structure, which is connected to the air duct.

13. The hair dryer according to any one of claims 1 to 10, characterized in that, The handle is equipped with an air inlet cover, and a power cord is provided at the tail of the handle. The air inlet cover has several air inlet holes, which are connected to the secondary flow channel to allow outside air to enter the secondary flow channel. The air inlet cover also has several blind holes, which are located on the side closer to the power cord than the blind holes.

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