Hair drier capable of realizing noise reduction function based on air guide steering

Abstract

The utility model discloses an air blower capable of realizing a noise reduction function based on air guide steering, which relates to the technical field of air blowers and comprises an air blower body, an air duct arranged along the axial direction of the air blower body is arranged in the air blower body; the air inlet structure comprises an air inlet area arranged at the rear end of the hair drier body, and a lateral air inlet through hole communicated with the air duct is formed in the air inlet area; the wind scooper is fixedly or detachably connected to the rear end of the hair dryer body and used for guiding and converting radial airflow and / or nearly radial airflow entering the lateral air inlet through hole into axial airflow in the axial direction of the hair dryer body, so that the noise direction of the air inlet area is changed; the original side air inlet mode of the hair dryer is converted into the rear air inlet mode, so that the propagation direction of noise in the air inlet area is changed, the noise is prevented from directly acting on sensitive parts such as human ears, and the noise perception degree of a user is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, specifically a hair dryer that achieves noise reduction based on airflow direction. Background Technology

[0002] Hair dryers, as multifunctional electrical appliances, are widely used not only for drying and styling hair, but also play an important role in laboratories, physiotherapy rooms, industrial production, and art fields for localized drying, heating, and therapeutic purposes. Traditional hair dryers typically rely on a motor to drive a rotor that rotates the fan blades, creating an airflow path from the inlet to the outlet. However, the air inlet of traditional hair dryers is usually located at the rear of the casing, employing a unidirectional air intake mode. This design has many drawbacks. If the rear air inlet is too large, it can easily tangle the user's hair, posing a safety hazard; if only a small inlet is used, both the intake and exhaust airflow are severely limited. Furthermore, if the air inlet is blocked by lint, textiles, or other debris, the motor's lifespan will be significantly reduced, severely affecting the temperature, airflow, and stability of the exhaust air. It can also generate considerable noise, and in extreme cases, may even burn out internal components, causing economic losses and safety risks to the user.

[0003] To overcome the aforementioned shortcomings of traditional hair dryers, side-inlet hair dryers have emerged, as exemplified by Chinese patents CN202420839163.8 ("A Hair Dryer") and CN202321893270.0 ("A Side-Inlet Hair Dryer"). The side-inlet design allows airflow to enter the hair dryer from the side by setting a side air inlet (i.e., an air inlet) at the rear of the hair dryer. This innovative design addresses some of the limitations of traditional rear-inlet methods, such as avoiding the risk of hair getting tangled and increasing the potential airflow.

[0004] However, the side-intake design reveals a significant weakness in noise control. The direction of noise propagation is not properly guided, resulting in noise traveling directly towards the body, especially the ears, during use. Since the ears are extremely sensitive to sound, this direct (or near-direct) noise propagation greatly amplifies the user's perception of noise, severely interfering with the user experience. The noise problem of side-intake hair dryers is particularly pronounced in noise-sensitive environments such as homes at night or offices.

[0005] Currently, noise reduction measures for side-intake hair dryers are mostly limited to adding sound-absorbing materials inside the dryer or soundproofing the motor. However, these methods only passively address noise after it has occurred, failing to effectively intervene at the source of the airflow entering the dryer. Because the direction of airflow and noise propagation is not optimized, it remains difficult to fundamentally solve the noise problem caused by side-intake. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A hair dryer that achieves noise reduction based on airflow direction adjustment includes:

[0008] A hair dryer body, wherein the interior of the hair dryer body has an air duct arranged along its axial direction;

[0009] An air intake structure, the air intake structure including an air intake area disposed at the rear end of the blower body, the air intake area being provided with a lateral air intake hole communicating with the air duct;

[0010] An air guide shroud, which is fixedly or detachably connected to the rear end of the blower body, is used to guide radial airflow and / or near-radial airflow entering through the lateral air inlet holes into axial airflow along the axis of the blower body, thereby changing the noise orientation of the air inlet area.

[0011] As a further embodiment of this utility model: the air guide shroud is arranged around the outside of the air inlet area and is spaced apart from the air inlet area so that the air guide shroud and the air inlet area enclose an air inlet channel extending along the axial direction of the blower body.

[0012] As a further embodiment of this utility model: the air guide cover and the air inlet area overlap axially on the blower body.

[0013] As a further embodiment of this utility model: the air inlet channel is arranged in a ring around the air inlet area, the inner side of the air inlet channel is connected to the lateral air inlet hole of the air inlet area, and the outer side of the air inlet channel has an opening for allowing outside air to flow into the air duct inside the blower body through the air inlet channel from the lateral air inlet hole.

[0014] As a further embodiment of this utility model, the air guide cover is made of transparent material.

[0015] As a further embodiment of this utility model: a bracket is installed at the rear end of the hair dryer body, the air inlet area is arranged around the outer periphery of the rear end of the bracket, an air inlet mesh is provided between the air guide shroud and the bracket, the air inlet mesh covers the lateral air inlet holes of the air inlet area, wherein the air guide shroud and the bracket are detachably coupled.

[0016] As a further embodiment of this utility model: a display module is installed on the bracket, and the display module is located at the center of the rear end of the hair dryer body / the center of the rear end of the bracket.

[0017] As a further embodiment of this utility model: the air guide shroud is provided with a first connecting part corresponding to the bracket along its circumference, and the bracket is provided with a first mating part corresponding to the first connecting part;

[0018] The air guide shroud is also provided with a second connecting part corresponding to the air inlet net along its circumference, and the air inlet net is provided with a second mating part corresponding to the second connecting part;

[0019] Through the cooperation of the first connecting part and the first mating part, as well as the cooperation of the second connecting part and the second mating part, the connection and cooperation between the air guide cover and the bracket and the air inlet net are realized simultaneously.

[0020] As a further embodiment of this utility model: at least one sound-absorbing mesh is provided inside the bracket to act on the air duct and / or air inlet area.

[0021] As a further embodiment of this utility model: the sound-absorbing mesh includes:

[0022] The first silencing mesh is cylindrical or annular in shape, arranged circumferentially along the outer side of the support, and opposite to the air inlet area;

[0023] The second silencing mesh is cylindrical or ring-shaped and is arranged around the middle area of ​​the support, opposite to the air inlet area;

[0024] The third noise reduction mesh is planar, arranged along the axial direction of the blower body, and located at one end of the bracket near the internal air duct of the blower.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1) Noise interference reduction: By changing the direction of noise propagation in the air intake area, noise is prevented from directly affecting sensitive parts of the human body such as the ears, effectively reducing the user's perception of noise and significantly improving the comfort during use. It is especially suitable for nighttime rest or office places with strict noise requirements.

[0027] 2) Noise source control: Unlike passive noise reduction methods such as adding sound-absorbing materials or soundproofing the motor after noise is generated, this design optimizes the airflow from the very beginning of the blower. By adjusting the direction of the incoming airflow, it solves the noise problem caused by side air intake at its source.

[0028] 3) Continued advantages of side air intake: While solving the noise problem, the side air intake design is retained to avoid hair getting tangled and increase air volume, making the hair dryer more perfect in performance, meeting the diverse needs of users, and enhancing the overall competitiveness of the product.

[0029] 4) Convenient to use and maintain: The air guide cover and the rear end of the blower body can be fixed or detached. The detachable connection makes it easy for users to clean or replace the air guide cover when needed, which improves the convenience of product use and maintenance.

[0030] 5) Enhance user experience: By changing the air guide cover to different thicknesses, the distance between the air guide cover and the air inlet area can be adjusted to regulate the air intake volume. This provides a flexible adjustment method for product use. During use, users can change the air guide cover to adjust the air intake volume according to the actual usage scenario, such as needing a large air volume to quickly dry thick hair and a small air volume to gently care for thin hair, to achieve a personalized drying experience and greatly improve the applicability of the product and user satisfaction.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] 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.

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of this utility model with the air guide cover removed;

[0035] Figure 3 This is a cross-sectional structural diagram of the ventilation duct in this utility model;

[0036] Figure 4 This is an exploded structural diagram of the ventilation duct in this utility model;

[0037] Figure 5 This is a schematic diagram of the structure of the air guide cover in this utility model;

[0038] Figure 6 This is a schematic diagram of the structure of the first sound-absorbing mesh on the support in this utility model;

[0039] Figure 7 This is a schematic diagram of the structure of the second sound-absorbing mesh on the support in this utility model;

[0040] Figure 8 This is a schematic diagram of the air intake state with the addition of an air guide shroud in this utility model;

[0041] Figure 9 This is a schematic diagram of the air intake state after removing the air guide cover in this utility model.

[0042] The reference numerals and names in the figure are as follows:

[0043] 1. Hair dryer body; 2. Air duct; 3. Air inlet area; 4. Side air inlet hole; 5. Air guide cover; 6. Air inlet channel; 7. Opening; 8. Bracket; 9. Air inlet mesh; 10. Display module; 11. First connecting part; 12. First mating part; 13. Second connecting part; 14. Second mating part; 15. First silencing mesh; 16. Second silencing mesh; 17. Third silencing mesh; 18. Air tube; 19. Handle. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] Please see Figure 1-9 In this embodiment of the invention, a hair dryer that achieves noise reduction based on airflow direction includes:

[0046] Hair dryer body 1, wherein the interior of hair dryer body 1 has an air duct 2 arranged along its axial direction;

[0047] The air intake structure includes an air intake area 3 located at the rear end of the blower body 1, and the air intake area 3 is provided with a lateral air intake hole 4 that communicates with the air duct 2.

[0048] The air guide shroud 5 is fixedly or detachably connected to the rear end of the blower body 1. It is used to guide the radial airflow and / or near-radial airflow entering the side air inlet 4 into axial airflow along the axis of the blower body 1, so as to change the noise orientation of the air inlet zone 3.

[0049] In this utility model, the hair dryer body 1 includes a blower tube 18 and a connected handle 19. The blower tube 18 has an air duct 2 extending along its axial direction inside. When the hair dryer is running, the airflow enters from the air inlet end, flows along the air duct 2, and finally blows out from the air outlet end. The air inlet area 3 of the air inlet structure surrounds the outer periphery of the rear end of the blower tube 18, and has lateral air inlet holes 4 that are perpendicularly connected to the air duct 2 evenly distributed on it. When the hair dryer is started, the outside air is attracted by the negative pressure inside the hair dryer body 1 and quickly flows into the hair dryer through these lateral air inlet holes 4 in a radial flow form and / or a near-radial flow form.

[0050] The air guide cover 5 is cylindrical in shape, and the diameter of its rear opening 7 is adapted to the outer diameter of the rear end of the air tube 18 of the hair dryer body 1. It can be firmly connected to the rear end of the air tube 18 through various methods such as tight fitting, magnetic adsorption, and snap-fit ​​connection, which can achieve a stable fixed connection and also facilitate disassembly when needed. When the outside air entering from the side air inlet 4 comes into contact with the air guide cover 5, the air cannot continue to flow along the original radial path and / or near-radial path due to the obstruction of the cylindrical structure of the air guide cover 5. At the same time, the guiding effect formed by the opening 7 of the air guide cover 5 being aligned with the axis of the hair dryer body 1 causes the air to flow along the direction of the opening 7 at the front end of the air guide cover 5, that is, along the axis of the hair dryer body 1. In this way, the original side air intake mode of the hair dryer is successfully changed to the rear air intake mode. With the change of air intake method, the direction of noise propagation also changes accordingly, no longer directly towards the human body, thereby effectively reducing the user's perception of noise.

[0051] Furthermore, from the perspective of airflow dynamics, the addition of the air guide shroud 5 has a significant effect on improving turbulence. Specifically, in the traditional side-inlet design, radial airflow and / or near-radial airflow directly rush into the air duct 2, and the airflow direction changes instantly, which can easily cause turbulence in the air duct 2. This not only affects the stability of the airflow, but the disorderly collision of airflow also generates additional noise. However, the air guide shroud 5 allows the airflow to gradually adjust its direction along the inner circumferential path of the air guide shroud 5 before entering the air duct 2, so that it flows into the air duct 2 in a stable and orderly manner to a certain extent. This orderly airflow greatly reduces turbulence, makes the airflow in the air duct 2 pass more smoothly, and improves the stability and uniformity of the airflow.

[0052] The direction of noise propagation is closely related to the direction of airflow. In traditional side-inlet designs, noise travels directly towards the human body, especially the ears, severely impacting user experience. This hair dryer design effectively guides the airflow direction with the air guide shroud 5, changing the direction of noise propagation and keeping it away from sensitive areas of the body. This design concept, which actively changes the direction of airflow and noise from the moment the airflow enters the hair dryer, is fundamentally different from the traditional method of passively reducing noise after it is generated. It can solve (reduce) the noise problem caused by side-inlet airflow at its source, while ensuring stable and efficient operation of the hair dryer's air intake and exhaust functions, creating a quiet and comfortable user environment and greatly improving user satisfaction.

[0053] Meanwhile, the air guide 5 forms a physical barrier in the side air intake area 3. When the user uses the hair dryer, the hair is close to the air intake area 3. The presence of the air guide 5 keeps the hair a certain distance from the actual air intake. Even in the case of side air intake or rear air intake, the hair is unlikely to come into direct contact with the air intake, thus avoiding the risk of hair getting tangled.

[0054] In one embodiment, the opening 7 of the air guide shroud 5 expands outward like a trumpet, which can effectively expand the air intake range. When the blower operates and generates negative pressure, this expanded opening 7 structure increases the contact area with the outside air, and more air can be drawn in under the negative pressure. Compared with ordinary flat air inlets, the trumpet-shaped opening 7 can guide air in from a larger space, which significantly increases the air intake volume. For example, under the same negative pressure conditions, an ordinary air inlet may introduce [X] cubic meters of air per minute, while with the trumpet-shaped opening 7 and air guide shroud 5, the air intake volume can be increased to [X + Y] cubic meters, which greatly improves the air intake efficiency of the blower.

[0055] In one embodiment, the air guide shroud 5 has a curved surface that guides the airflow to flow stably and orderly. The curved surface design conforms to aerodynamic principles. When air enters the air guide shroud 5, the curved surface can guide and rectify the airflow. The curved surface inside the air guide shroud 5 can smoothly guide the airflow to the lateral air inlet vent 4, ensuring that the airflow enters the air inlet area 3 in a more stable axial flow state and / or near-axial flow state. This not only helps to prevent hair from getting into the air inlet area 3, because the stable airflow will not generate turbulent areas with strong suction force on hair, but also further ensures the high efficiency of air intake, enabling the hair dryer to continuously and stably blow out strong and uniform air, improving overall performance.

[0056] In summary, this utility model can:

[0057] Noise interference reduction: By changing the direction of noise propagation in air intake zone 3, noise is prevented from directly affecting sensitive parts of the human body such as the ears, effectively reducing the user's perception of noise and significantly improving comfort during use. It is especially suitable for nighttime rest or office spaces with strict noise requirements.

[0058] Noise source control: Unlike passive noise reduction methods such as adding sound-absorbing materials or soundproofing the motor after noise is generated, this design optimizes the airflow from the very beginning of the blower's operation. By adjusting the direction of the incoming airflow, it solves the noise problem caused by side air intake at its source.

[0059] The advantages of side air intake are retained: while solving the noise problem, the side air intake design is retained to avoid hair getting tangled and increase the air volume, making the hair dryer more perfect in performance, meeting the diverse needs of users, and enhancing the overall competitiveness of the product.

[0060] Convenient to use and maintain: The air guide cover 5 and the rear end of the blower body 1 can be fixed or detached. The detachable connection makes it easy for users to clean or replace the air guide cover 5 when needed, which improves the convenience of product use and maintenance.

[0061] In this embodiment of the present invention, the air guide shroud 5 is arranged around the outside of the air inlet area 3 and is spaced apart from the air inlet area 3 so that the air guide shroud 5 and the air inlet area 3 enclose an air inlet channel 6 extending along the axial direction of the blower body 1.

[0062] When the hair dryer is turned on, outside air first enters the air intake channel 6. Due to the obstruction of the air guide shroud 5, the air cannot pass through directly radially and can only flow axially along the air intake channel 6. Subsequently, the air enters the air duct 2 of the hair dryer body 1 through the side air intake holes 4 on the air intake area 3. In this way, the air that might have entered in a chaotic radial manner is constrained in the air intake channel 6, and converges and adjusts in an axial flow manner. Then, it gradually enters the air duct 2 through the side air intake holes 4, realizing an effective conversion from side air intake to rear air intake. This design utilizes the axial guidance of the air intake channel 6 to assist the air guide shroud 5 in better controlling the airflow direction and ensuring the orderliness of air intake.

[0063] In one embodiment, the cross-sectional area of ​​the air intake channel 6 can be changed by adjusting the distance between the air guide shroud 5 and the air intake area 3. When the distance increases, the cross-sectional area of ​​the air intake channel 6 becomes larger, allowing more air to enter the air intake channel 6 per unit time; conversely, the air intake volume is reduced. Thus, during the product design phase, engineers can precisely control the distance between the air guide shroud 5 and the air intake area 3 based on the ideal air intake volume of the hair dryer. If a larger air intake volume is desired, the distance can be increased to widen the cross-sectional area of ​​the air intake channel 6, thereby increasing the amount of air entering the air intake channel 6 per unit time; if a smaller air intake volume is required... To increase the amount of air entering the air intake, the spacing between the air guide 5 and the air intake area 3 should be reduced, thus narrowing the cross-sectional area of ​​the air intake channel 6. Furthermore, since the air guide 5 adopts a detachable design, users can easily adjust the spacing between the air guide 5 and the air intake area 3 by replacing the air guide 5 with one of different thicknesses. If a larger air intake is desired, a thinner air guide 5 can be used to increase the spacing and widen the cross-sectional area of ​​the air intake channel 6, thereby increasing the amount of air entering the air intake channel 6 per unit time. If a smaller air intake is required, a thicker air guide 5 can be used to reduce the spacing and narrow the cross-sectional area of ​​the air intake channel 6, thus controlling the amount of air entering the air intake.

[0064] In this embodiment of the present invention, the air guide shroud 5 and the air inlet area 3 overlap axially on the blower body 1.

[0065] The blower generates negative pressure during operation, drawing in outside air. The air guide shroud 5 and the air inlet area 3 overlap axially to form an axial air inlet channel 6. Under the influence of negative pressure, outside air enters this air inlet channel 6. Due to the constraints of the overlapping structure, it can only flow axially. In this way, the airflow that originally entered the air inlet area 3 radially, which was prone to generating noise and directly directed at the human body, is forced to change to axial flow. Before reaching the side air inlet vent 4, the airflow direction is stable, reducing turbulence caused by sudden changes in direction, thereby reducing noise. At the same time, the axial flow of airflow changes the direction of noise propagation, so that it is no longer directly directed at the human body. That is, the original side air inlet mode of the blower is successfully transformed into the rear air inlet mode, which changes the direction of noise in the air inlet area 3, achieves the purpose of noise reduction, and also creates conditions for the airflow to enter the air duct 2 smoothly and improve the stability of the airflow.

[0066] In this embodiment of the present invention, the air inlet channel 6 is arranged in a ring around the air inlet area 3. The inner side of the air inlet channel 6 is connected to the lateral air inlet hole 4 of the air inlet area 3. The outer side of the air inlet channel 6 has an opening 7 for allowing outside air to flow into the air duct 2 inside the blower body 1 through the lateral air inlet hole 4 via the air inlet channel 6.

[0067] After the hair dryer is turned on, a negative pressure environment is formed inside. The air intake channel 6 is in a ring shape around the air intake area 3. Its ring structure allows a large amount of outside air to rush in from the outer opening 7. Since the inner side of the air intake channel 6 is connected to the side air intake hole 4 of the air intake area 3, the rushing air gathers in an orderly manner in the air intake channel 6 and flows along it. Under the constraint of the ring air intake channel 6, the air cannot diffuse at will and can only flow along its path to the side air intake hole 4, and then flow into the air duct 2 inside the hair dryer body 1. This process regulates the air that may have entered the air intake area 3 in a chaotic manner into a stable axial flow, realizing the transformation from side air intake to rear air intake, changing the airflow direction at the initial air intake of the hair dryer, and affecting the direction of noise propagation.

[0068] In this embodiment of the utility model, the air guide cover 5 is made of transparent material.

[0069] The transparent material gives the hair dryer a unique appearance. Compared with traditional opaque materials, the transparent air guide cover makes the product look more exquisite and stylish, meeting consumers' needs for product aesthetics and personalization. This design can enhance the product's appeal in the market and increase its competitiveness.

[0070] Meanwhile, the transparent air guide cover 5 allows users to check at any time whether there are any blockages in the air intake channel 6 and air intake area 3. When dust, hair, or other debris are found to accumulate, users can clean them in time to avoid the hair dryer's performance from deteriorating or being damaged due to poor air intake, thus extending the hair dryer's service life.

[0071] In this embodiment of the utility model, a bracket 8 is installed at the rear end of the hair dryer body 1, the air inlet area 3 is arranged around the outer periphery of the rear end of the bracket 8, and an air inlet mesh 9 is provided between the air guide shroud 5 and the bracket 8. The air inlet mesh 9 covers the lateral air inlet holes 4 of the air inlet area 3. The air guide shroud 5 and the bracket 8 are detachably coupled.

[0072] The bracket 8 plays a crucial role in supporting the air inlet zone 3, the air inlet mesh 9, and the air guide shroud 5. The air inlet zone 3 is arranged around the rear outer periphery of the bracket 8, becoming the primary contact point for outside air entering the hair dryer. Between the air guide shroud 5 and the bracket 8, the air inlet mesh 9 is installed. This air inlet mesh 9 completely covers the side air inlet holes 4 of the air inlet zone 3. When the hair dryer is turned on, a negative pressure is generated inside, which attracts outside air. It flows through the gap between the air guide shroud 5 and the bracket 8 to the air inlet mesh 9 (since the air inlet mesh 9 is on the outside of the air inlet zone 3, it can also be regarded as the gap between the air guide shroud 5 and the air inlet mesh 9). The air inlet mesh 9 then performs its filtering function, intercepting larger impurities such as dust and hair, preventing them from entering the side air inlet holes 4, thereby ensuring that the air entering the internal air duct 2 of the hair dryer is relatively clean. Furthermore, the air guide shroud 5 and the bracket 8 adopt a detachable design, which means that when the air inlet mesh 9 needs cleaning or the air inlet zone 3 needs maintenance, the user can easily remove the air guide shroud 5 to carry out subsequent operations.

[0073] In this embodiment of the present invention, a display module 10 is installed on the bracket 8, and the display module 10 is located at the center of the rear end of the hair dryer body 1 / the center of the rear end of the bracket 8.

[0074] The display module 10 is mounted on the bracket 8 and located at the center of the rear end of the hair dryer body 1 or the rear end of the bracket 8. The center of the rear end of the bracket 8 can be regarded as the center of the rear end of the hair dryer body 1, that is, the center of the rear end of the blower tube 18. This is designed to provide users with a convenient and intuitive information interaction interface. From an engineering design perspective, the bracket 8, as a relatively stable and flat structure at the rear end of the hair dryer, provides a reliable support for the installation of the display module 10. The choice of the center position fully considers the user's perspective. Whether the user is holding the hair dryer or using it on a table, they can see the display module 10 from the most direct line of sight. Through this design, the display module 10 can promptly and clearly display the key operating parameters of the hair dryer to the user, such as the current wind speed level, temperature setting, remaining battery power (if it is rechargeable), air intake status, and working mode, helping the user quickly understand the real-time status of the hair dryer and make corresponding operational adjustments.

[0075] In this embodiment of the present invention, the air guide shroud 5 is provided with a first connecting part 11 corresponding to the bracket 8 along its circumference, and the bracket 8 is provided with a first mating part 12 corresponding to the first connecting part 11.

[0076] The air guide shroud 5 is also provided with a second connecting part 13 corresponding to the air inlet net 9 along its circumference, and the air inlet net 9 is provided with a second mating part 14 corresponding to the second connecting part 13;

[0077] Through the cooperation of the first connecting part 11 and the first mating part 12, as well as the cooperation of the second connecting part 13 and the second mating part 14, the connection and cooperation between the air guide shroud 5 and the bracket 8 and the air inlet net 9 are realized simultaneously.

[0078] In the circumferential direction, the air guide shroud 5 is provided with a first connecting part 11, which can take various forms. For example, the first connecting part 11 can be a plurality of elastic buckles evenly distributed along the circumference of the air guide shroud 5. Correspondingly, the first mating part 12 on the bracket 8 is a matching slot. During installation, the air guide shroud 5 is brought close to the bracket 8, the buckles are aligned with the slots, and a gentle force is applied and pressed. The buckles are inserted into the slots by their own elastic deformation, thus completing the connection between the two. The even distribution of multiple buckles ensures that the force is even in the circumferential direction. The first connecting part 11 and the first mating part 12 can also be corresponding magnetic components, which are not limited here.

[0079] The second connecting part 13 of the air guide shroud 5, which is arranged circumferentially, interacts with the second mating part 14 of the air inlet mesh 9. Assuming that the second connecting part 13 is a hook on the circumferential edge of the air guide shroud 5 and the second mating part 14 is a hanging hole at the corresponding position on the circumferential edge of the air inlet mesh 9, during installation, the air guide shroud 5 and the air inlet mesh 9 are brought close together, and the hooks are hung into the hanging holes in sequence to achieve the connection between the two in the circumferential direction; or the second connecting part 13 is a groove on the circumferential side of the air guide shroud 5 and the second mating part 14 is a protrusion on the circumferential side of the air inlet mesh 9, and the connection is completed by embedding the protrusion into the groove during installation.

[0080] During installation, first assemble the air inlet mesh 9 and the air guide shroud 5, then connect the air guide shroud 5 with the air inlet mesh 9 to the bracket 8. This simultaneously achieves a stable connection and cooperation between the air guide shroud 5, the bracket 8, and the air inlet mesh 9. This design ensures that the air guide shroud 5 remains stable during the operation of the hair dryer, optimizes the air intake system's sealing, and guides the airflow along a predetermined path. After passing through the gap between the air guide shroud 5 and the bracket 8 and being filtered by the air inlet mesh 9, the airflow enters the side air intake holes 4 of the air intake area 3 in an orderly manner. At the same time, the design that allows the air inlet mesh 9 to be disassembled and installed along with the air guide shroud 5 makes cleaning and maintenance of the air inlet mesh 9 very convenient. Users can periodically remove the air guide shroud 5 with the air inlet mesh 9 to clean the dust, hair, and other impurities accumulated on the air inlet mesh 9, keeping the air intake system unobstructed, thereby improving the performance and service life of the hair dryer.

[0081] In this embodiment of the present invention, at least one sound-absorbing mesh is provided inside the bracket 8 to act on the air duct 2 and / or the air inlet zone 3;

[0082] The noise-absorbing mesh includes:

[0083] The first silencing mesh 15 is cylindrical or annular in shape, arranged circumferentially along the outer side of the support 8, and opposite to the air inlet area 3;

[0084] The second noise reduction mesh 16 is cylindrical or annular, and is arranged around the middle area of ​​the support 8 and opposite to the air inlet area 3.

[0085] The third noise reduction mesh 17 is planar, arranged along the axial direction of the blower body 1, and located at one end of the bracket 8 near the internal air duct 2 of the blower.

[0086] When the hair dryer is in operation, the airflow flows through the air duct 2 and the air inlet area 3, which can easily generate noise. The purpose of silencing mesh is to effectively reduce noise from different positions and in different ways in the bracket 8.

[0087] As the initial point of airflow, the air inlet zone 3 is a concentrated noise generation area. The first silencing mesh 15, with its porous structure or sound-absorbing material, converts the high-frequency noise generated by the airflow impacting the air inlet zone 3 into heat and other forms of energy when outside air rushes in, thus initially reducing noise intensity. Even after being processed by the first silencing mesh 15, the airflow still carries some noise. The second silencing mesh 16 then plays a secondary noise reduction role. It not only absorbs the noise generated during the continuous flow of air in the air inlet channel 6 but also further weakens the noise that the first silencing mesh 15 did not completely eliminate, thus enhancing noise control. At this point, the airflow... As the airflow enters the air duct 2, the third silencing mesh 17 further reduces the noise remaining in the airflow before entering the air duct 2, preventing it from being amplified by the resonance effect of the air duct 2 after entering the air duct 2. In addition to changing the direction of noise and reducing the direct impact of noise on users through the design of the air guide shroud 5, the addition of triple silencing mesh brings better noise reduction effect. That is, by setting silencing meshes with different structures and positions at the beginning of the air inlet 3, the middle of the air inlet path, and the inlet of the air duct 2, they work together to reduce the noise related to the air inlet 3 and the air duct 2 from multiple aspects, thereby enabling the hair dryer to achieve better noise reduction function.

[0088] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A hair dryer that achieves noise reduction based on airflow direction, characterized in that, include: A hair dryer body, wherein the interior of the hair dryer body has an air duct arranged along its axial direction; An air intake structure, the air intake structure including an air intake area disposed at the rear end of the blower body, the air intake area being provided with a lateral air intake hole communicating with the air duct; An air guide shroud, which is fixedly or detachably connected to the rear end of the blower body, is used to guide radial airflow and / or near-radial airflow entering through the lateral air inlet holes into axial airflow along the axis of the blower body, thereby changing the noise orientation of the air inlet area.

2. A hair dryer with noise reduction function based on airflow direction as described in claim 1, characterized in that, The air guide shroud is arranged around the outside of the air inlet area and is spaced apart from the air inlet area so that the air guide shroud and the air inlet area enclose an air inlet channel that extends along the axial direction of the blower body.

3. A hair dryer with noise reduction function based on airflow direction as described in claim 2, characterized in that, The air guide cover and the air inlet area overlap axially on the blower body.

4. A hair dryer with noise reduction function based on airflow direction as described in claim 2, characterized in that, The air intake channel is arranged in a ring around the air intake area. The inner side of the air intake channel is connected to the lateral air intake hole of the air intake area. The outer side of the air intake channel has an opening for allowing outside air to flow into the air duct inside the blower body through the lateral air intake hole.

5. A hair dryer with noise reduction function based on airflow direction as described in claim 1, characterized in that, The air guide cover is made of transparent material.

6. A hair dryer with noise reduction function based on airflow direction according to any one of claims 1-5, characterized in that, A bracket is installed at the rear end of the hair dryer body. The air inlet area is arranged around the outer periphery of the rear end of the bracket. An air inlet mesh is provided between the air guide shroud and the bracket. The air inlet mesh covers the lateral air inlet holes of the air inlet area. The air guide shroud and the bracket are detachably connected.

7. A hair dryer with noise reduction function based on airflow direction as described in claim 6, characterized in that, A display module is mounted on the bracket, and the display module is located at the center of the rear end of the hair dryer body / the center of the rear end of the bracket.

8. A hair dryer with noise reduction function based on airflow direction as described in claim 6, characterized in that, The air guide shroud is provided with a first connecting part corresponding to the bracket along its circumference, and the bracket is provided with a first mating part corresponding to the first connecting part; The air guide shroud is also provided with a second connecting part corresponding to the air inlet net along its circumference, and the air inlet net is provided with a second mating part corresponding to the second connecting part; Through the cooperation of the first connecting part and the first mating part, as well as the cooperation of the second connecting part and the second mating part, the connection and cooperation between the air guide cover and the bracket and the air inlet net are realized simultaneously.

9. A hair dryer with noise reduction function based on airflow direction as described in claim 6, characterized in that, The bracket is equipped with at least one sound-absorbing mesh that acts on the air duct and / or air intake area.

10. A hair dryer with noise reduction function based on airflow direction as described in claim 9, characterized in that, The noise-absorbing mesh includes: The first silencing mesh is cylindrical or annular in shape, arranged circumferentially along the outer side of the support, and opposite to the air inlet area; The second silencing mesh is cylindrical or ring-shaped and is arranged around the middle area of ​​the support, opposite to the air inlet area; The third noise reduction mesh is planar, arranged along the axial direction of the blower body, and located at one end of the bracket near the internal air duct of the blower.

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