Diffusion nozzle and blow device having the same

Abstract

The application discloses a diffusion air nozzle and a hair dryer with the same. The diffusion air nozzle is used for connecting to the hair dryer. The diffusion air nozzle comprises an air inlet, an air outlet grille, an air outlet air duct and a flow guide. The air inlet is used for connecting with the air outlet of the hair dryer and forms an air inlet surface. The air outlet grille forms an air outlet surface which is vertically arranged relative to the air inlet surface. The air outlet air duct is formed between the air inlet and the air outlet grille. The flow guide is located in the air outlet air duct and is configured to deflect the airflow direction entering from the air inlet by 90 degrees so that the air outlet direction is perpendicular to the air inlet direction. The structure of the air inlet, the air outlet grille and the flow guide is optimized so that the airflow direction is deflected by approximately 90 degrees in the air outlet air duct. The concentrated airflow entering from the air inlet is adjusted to be vertically diffused airflow. The air outlet area is significantly increased, and the uniformity of the airflow distribution to each area of the air outlet grille is improved, thereby improving the air outlet uniformity.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, specifically to a diffuser nozzle and a blowing device having thereon. Background Technology

[0002] Hair dryers are widely used in homes, hair salons, and other places for drying and styling hair. To improve the user experience, a diffuser nozzle is usually connected to the air outlet of the hair dryer to achieve airflow diffusion and even distribution, thereby improving the drying effect.

[0003] However, existing diffuser nozzles generally suffer from inadequate internal airflow design. When airflow moves within the duct, the lack of an efficient airflow guidance and distribution mechanism easily leads to concentration in localized areas (especially the center of the air outlet grille), resulting in significantly uneven airflow distribution. This unevenness not only makes it difficult to achieve a uniform and rapid drying effect for hair, affecting the user experience, but also may pose a risk of localized high-temperature burns.

[0004] Furthermore, in a flow channel lacking effective guidance, the airflow is prone to violently impacting the internal components of the nozzle (such as the housing and grille), generating intense turbulence. This turbulence is a major source of high-frequency aerodynamic noise, and the resulting significant noise severely interferes with user comfort, becoming a critical issue that urgently needs to be addressed. Summary of the Invention

[0005] The purpose of this application is to provide a diffuser nozzle and a blowing device having the same.

[0006] To achieve at least one of the above-mentioned objectives, one embodiment of this application provides a diffuser nozzle for connection to a hair dryer, the diffuser nozzle comprising:

[0007] An air inlet is used to connect with the air outlet of the hair dryer and form an air inlet surface;

[0008] An air outlet grille forms an air outlet surface, which is perpendicular to the air inlet surface.

[0009] An air outlet duct is formed between the air inlet and the air outlet grille;

[0010] A flow guide is located in the air outlet duct. The flow guide is configured to deflect the airflow direction entering from the air inlet by 90° so that the air outlet direction is perpendicular to the air inlet direction.

[0011] The diffuser nozzle provided in this application optimizes the structure of the air inlet, air outlet grille, and air guide, making the air outlet surface perpendicular to the air inlet surface. Combined with the air guide, the airflow direction is deflected approximately 90° in the air outlet duct. This allows the concentrated airflow entering from the air inlet to be adjusted into a vertically diffused airflow before being discharged through the air outlet grille. A portion of the airflow exits from the air inlet towards the area of ​​the air outlet grille near the air inlet surface, effectively shortening the airflow path. The remaining airflow, under the action of the air guide, diffuses to the remaining area of ​​the air outlet grille. This not only significantly increases the air outlet area but also improves the uniformity of airflow distribution across the air outlet grille, thereby improving airflow uniformity and avoiding the risk of burns caused by localized high temperatures. This solves the problems of uneven airflow and high noise caused by airflow directly hitting the air outlet grille in related technologies. The orderly guidance of airflow by the air guide also reduces turbulence and noise generation, improving user comfort. Furthermore, the vertical arrangement of the air inlet and air outlet surfaces helps reduce the radial height of the diffuser nozzle at the air inlet, making it easier to store.

[0012] As a further improvement of one embodiment of this application, the diffuser nozzle further includes a wind deflector located in the air outlet duct, the wind deflector being parallel to the air outlet surface and spaced apart from the air outlet grille, the wind deflector being located in the area directly behind the air outlet grille and centered along the air outlet direction.

[0013] This design serves two purposes: firstly, the wind deflector prevents high-speed airflow from directly impacting the central area of ​​the air outlet grille, thus suppressing localized high-frequency aerodynamic noise caused by the impact; secondly, the airflow around the wind deflector can flow between the wind deflector and the air outlet grille, achieving secondary airflow diversion and pressure regulation, balancing the wind speed distribution on the air outlet cross-section, effectively eliminating the phenomenon of excessively high or low local wind speeds, and improving the uniformity of airflow throughout the entire air outlet area.

[0014] As a further improvement of one embodiment of this application, the windbreak is disposed on the airflow path between the guide member and the air outlet grille.

[0015] With this configuration, the wind deflector is closer to the air outlet grille, which optimizes the airflow path and effectively guides the airflow to the air outlet grille. This further enhances the rectification effect, avoids turbulence, and ensures a clear airflow path and minimal disturbance during system operation, thus helping to maintain long-term operational stability and performance consistency.

[0016] As a further improvement of one embodiment of this application, the flow guide includes:

[0017] Multiple first air guide plates are spaced apart along the air inlet direction, and the first air guide plates are arc-shaped;

[0018] Multiple second air guide plates are spaced apart along a first direction perpendicular to the air inlet and outlet directions, and the second air guide plates are arc-shaped; wherein each second air guide plate intersects with at least one first air guide plate to jointly divide the air outlet duct into multiple independent sub-channels.

[0019] This design, through the structure of the air guide, divides the air supply duct into multiple sub-channel grids on the corresponding air outlet surface. This allows the airflow to be distributed to various areas within the outlet duct after entering the supply duct, resulting in airflow exiting from different directions of the outlet grille. Even areas far from the air inlet will experience airflow, improving airflow uniformity and preventing excessively high or low local wind speeds. The curved air guide not only effectively deflects the airflow direction but also ensures a smooth transition at the air guide, avoiding sudden reversals or sharp disturbances caused by corners. Compared to straight air guide structures, the curved air guide better conforms to the airflow path, improving airflow efficiency.

[0020] As a further improvement of one embodiment of this application, the second air guide plate is provided in pairs, and the pair of second air guide plates gradually move away from each other along the air inlet direction.

[0021] This configuration, where a pair of second air guides gradually move away from each other in a direction away from the air inlet, meaning the distance between the pair of second air guides gradually increases, guides the airflow to a place farther from the air inlet and to the periphery of the air outlet duct, avoiding dead zones in the air outlet. At the same time, it prevents the airflow from concentrating in the central area of ​​the air outlet duct, further reducing the wind speed, increasing the air outlet coverage area and air outlet uniformity, and also reducing frizzy hair after blowing air.

[0022] As a further improvement of one embodiment of this application, among the plurality of first air guide plates, the first air guide plate away from the air inlet includes a first plate and a second plate, the first plate and the second plate being located on the side of a pair of second air guide plates opposite to each other.

[0023] This design ensures uniform airflow and low noise while simplifying the mold structure and reducing processing difficulty and production costs.

[0024] As a further improvement of one embodiment of this application, the windbreak is disposed at one end of the air guide facing the air outlet grille.

[0025] This design allows the wind deflector to support the wind deflector, improving its installation stability and preventing vibration and noise.

[0026] As a further improvement of one embodiment of this application, the wind deflector connects two adjacent first air guide plates in the air guide, and the two first air guide plates are connected to each other at the end away from the wind deflector to form a closed structure.

[0027] With this configuration, the first air guide plate can support the wind deflector, while also increasing the installation strength of the air guide and the wind deflector, improving structural stability, and reducing noise caused by vibration and structural resonance. By connecting the ends of the two first air guide plates away from the wind deflector, a closed space is formed between the two first air guide plates and the wind deflector, preventing airflow from entering the space and causing noise. The two first air guides can also be used to guide the airflow.

[0028] As a further improvement of one embodiment of this application, the diffuser nozzle further includes a housing, the housing and the air outlet grille together defining the air outlet duct, the wind deflector extending to both ends of the housing along a first direction and connected to the housing, the first direction being perpendicular to the air inlet direction and the air outlet direction.

[0029] This configuration, through the connection between the wind deflector and the housing, allows the housing to support and fix the wind deflector, further improving the connection stability of the wind deflector. This helps to further reduce structural vibration and vibration noise, and also prevents the wind deflector from shifting and affecting airflow distribution.

[0030] As a further improvement of one embodiment of this application, the diffuser nozzle further includes a grille, which is disposed on the air guide and has a curved surface.

[0031] This configuration, with the grille placed on the guide, can further rectify the airflow passing through the guide. It can not only divide the eddies in the airflow into smaller eddies that are easy to attenuate, but also reduce the airflow noise in the diffuser nozzle and further improve the uniformity of airflow distribution. The curved surface of the grille can better adapt to the flow trajectory of the airflow and effectively avoid the airflow directly hitting the grille and generating turbulence.

[0032] As a further improvement of one embodiment of this application, the grille is disposed at one end of the air guide near the air outlet grille.

[0033] This design further refines and rectifies the airflow as it exits the guide, ensuring a gentle and stable airflow and preventing excessive turbulence.

[0034] As a further improvement of one embodiment of this application, the grid member has a plurality of through holes, the diameter of which is 0.25 to 3 mm.

[0035] With this configuration, the through holes of the grille can divide the airflow, making the airflow more evenly and finely distributed in all areas of the air outlet duct, avoiding the phenomenon of excessively high or low wind speed in local areas, and achieving better noise reduction effect. According to tests, compared with no grille, through holes within this range can reduce noise by 1.5 to 2.5 dB.

[0036] As a further improvement of one embodiment of this application, the diffuser nozzle further includes a housing, the housing including an outer shell and an inner shell, the inner shell being located inside the outer shell, the air outlet grille being connected to the inner shell and the outer shell respectively, the air outlet grille including a plurality of air outlet holes, and the plurality of air outlet holes being located in the inner space defined by the inner shell; along the air outlet direction, the distance L1 between the end of the air inlet near the air outlet grille and the end of the inner shell connected to the air outlet grille is 13mm to 30mm.

[0037] This design allows for sufficient space between the air outlet and the air grille within the housing, enabling ample room for airflow to diffuse. This facilitates airflow diffusion across the entire surface of the air grille, reducing airflow velocity and noise, while also improving airflow uniformity and enhancing the user experience.

[0038] As a further improvement of one embodiment of this application, the outer shell and the inner shell are spaced apart, and along the air outlet direction, the distance L2 between the end of the air inlet near the air outlet grille and the end of the outer shell connected to the air outlet grille is 20mm to 40mm, and L2>L1.

[0039] This design creates a heat insulation layer between the outer and inner shells to prevent heat from escaping from the shells, thus reducing the outlet air temperature and preventing burns caused by excessive shell temperature. By setting the connection position between the outlet grille and the inner and outer shells and the distance between the outlet grille and the air outlet, the outlet grille is made concave, which is not only aesthetically pleasing but also allows the air outlet range to be limited by the part of the outlet grille located between the inner and outer shells, thus creating a converging effect.

[0040] To achieve at least one of the above-mentioned objectives, one embodiment of this application also provides a diffuser nozzle for connection to a hair dryer, the diffuser nozzle comprising:

[0041] An air inlet is used to connect to the air outlet of the hair dryer;

[0042] An air outlet grille, wherein the central axis of the air outlet grille is perpendicular to the central axis of the air inlet;

[0043] An air outlet duct is formed between the air inlet and the air outlet grille;

[0044] A flow guide is located in the air outlet duct. The flow guide is configured to deflect the airflow direction entering from the air inlet by 90° so that the air outlet direction is perpendicular to the air inlet direction.

[0045] The diffuser nozzle provided in this application optimizes the structure of the air inlet, air outlet grille, and guide vanes, causing the airflow direction to deflect approximately 90° in the air outlet duct, making the air outlet direction perpendicular to the air inlet direction. This allows the concentrated airflow entering from the air inlet to be adjusted into a vertically diffused airflow before being discharged through the air outlet grille. Part of the airflow exits from the air inlet towards the area of ​​the air outlet grille near the air inlet surface, effectively shortening the airflow path. The remaining airflow diffuses to the remaining area of ​​the air outlet grille under the action of the guide vanes. This not only significantly increases the air outlet area but also improves the uniformity of airflow distribution across the air outlet grille, thereby improving airflow uniformity and avoiding the risk of burns caused by localized high temperatures. This solves the problems of uneven airflow and high noise caused by airflow directly hitting the air outlet grille in related technologies. The orderly guidance of airflow by the guide vanes also reduces turbulence and noise generation, improving user comfort. In addition, the central axis of the air outlet grille is perpendicular to the central axis of the air inlet, which helps to reduce the radial height of the diffuser nozzle at the air inlet, thus facilitating storage.

[0046] To achieve at least one of the above-mentioned objectives, one embodiment of this application also provides a hair dryer, including a hair dryer comprising a fan and an air outlet, the fan being used to generate airflow, and the hair dryer further comprising a diffuser nozzle as described above, the air inlet being connected to the air outlet.

[0047] The blower device provided in this application optimizes the structure of the diffuser nozzle's inlet, outlet grille, and guide vanes, causing the airflow direction to deflect 90° in the outlet duct, making the outlet direction perpendicular to the inlet direction. This adjusts the concentrated airflow from the self-drying shampoo into a vertically diffused airflow before it is discharged through the outlet grille. Part of the airflow exits from the inlet towards the area near the inlet surface of the outlet grille, effectively shortening the airflow path. The remaining airflow diffuses to the rest of the outlet grille under the action of the guide vanes. This not only significantly increases the outlet area but also improves the uniformity of airflow distribution across the outlet grille, thereby improving airflow uniformity and preventing burns caused by localized high temperatures. This solves the problems of uneven airflow and high noise caused by airflow directly hitting the outlet grille in related technologies. The orderly guidance of airflow by the guide vanes also reduces turbulence and noise generation, improving user comfort. Furthermore, the vertical arrangement of the inlet and outlet surfaces helps reduce the radial height of the diffuser nozzle at the inlet, making it easier to store. Attached Figure Description

[0048] Figure 1This is a three-dimensional structural schematic diagram of the blower device according to Embodiment 1 of this application;

[0049] Figure 2 This is a three-dimensional structural schematic diagram of the diffuser nozzle of Embodiment 1 of this application;

[0050] Figure 3 yes Figure 2 An explosion diagram;

[0051] Figure 4 This is a schematic diagram of the assembly structure of the shell and the flow guide in Embodiment 1;

[0052] Figure 5 yes Figure 4 A sectional view along line AA.

[0053] Figure 6 This is a front view of the diffuser nozzle of Embodiment 1 of this application;

[0054] Figure 7 yes Figure 6 Sectional view along line BB;

[0055] Figure 8 Yes, yes Figure 7 Enlarged diagram of section C;

[0056] Figure 9 This is a three-dimensional structural schematic diagram of the flow guide component according to one embodiment of Example 1;

[0057] Figure 10 This is a cross-sectional structural diagram of the guide member, windbreak member and grille member in one embodiment of Example 1;

[0058] Figure 11 This is a cross-sectional structural diagram of the guide, windbreak and grille components in another embodiment of Example 1;

[0059] Figure 12 This is a cross-sectional structural diagram of the diffuser nozzle in Example 2.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100. Blower; 10. Diffuser nozzle; 1. Air inlet; 2. Air outlet grille; 21. Air outlet hole; 3. Air outlet duct; 31. Sub-channel; 4. Guide component; 41. First air guide plate; 411. First plate; 412. Second plate; 42. Second air guide plate; 43. Guide plate; 5. Housing; 51. Outer shell; 52. Inner shell; 6. Windproof component; 61. Windproof plate; 7. Grille component; 71. First end; 72. Second end; 73. Connecting part; 74. Sub-grill; 8. Guide part; 20. Hair dryer. Detailed Implementation

[0062] The present application will now be described in detail with reference to the specific embodiments shown in the accompanying drawings.

[0063] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts are enlarged relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0064] It should be understood that although the terms "first," "second," "third," etc., may be used in this document to describe various elements, structures, or parameters, the objects being described should not be limited by these terms. These terms are only used to distinguish these objects from one another.

[0065] Example 1

[0066] See Figure 1 This embodiment provides a blower device 100 for drying hair or items using airflow.

[0067] When powered on, the hair dryer 100 can blow out warm air to dry or style damp hair. Of course, the application scenarios of the hair dryer 100 are not limited to this. For example, it can be used to dry pets, clothes, carpets or other items that need to be dried.

[0068] Next, we will use the hair dryer 100 for drying hair as an example. Of course, the scope of protection of this application is not limited thereto.

[0069] See Figure 1 The hair dryer 100 includes a diffuser nozzle 10 and a hair dryer 20, with the diffuser nozzle 10 connected to the hair dryer 20. The hair dryer 20 is used to blow out airflow, and the diffuser nozzle 10 is used to evenly diffuse the airflow blown out by the hair dryer 20 to increase the air outlet area, improve the uniformity of airflow, and reduce noise.

[0070] The hair dryer 20 includes a main body, a fan, a motor, an air inlet, and an air outlet. The main body includes a handle for easy gripping. An airflow channel is defined inside the main body, and the fan is located within the airflow channel. The motor provides power to the fan, which generates airflow. Both the air inlet and the air outlet are located on the main body and are connected to the airflow channel. When powered on, the fan starts, drawing in air through the air inlet and expelling it through the air outlet. The air then enters the diffuser nozzle 10, is diffused by the diffuser nozzle, and is then expelled from the airflow.

[0071] The hair dryer 20 also includes a heater located in the airflow channel to heat the passing airflow, thereby blowing out a warm airflow to quickly dry the hair.

[0072] The main body is also equipped with operation keys for controlling the start and stop of the motor, and whether the heater is running.

[0073] See Figures 2 to 8 The diffuser nozzle 10 includes an air inlet 1, an air outlet grille 2, an air outlet duct 3, and a guide element 4.

[0074] The air inlet 1 is used to connect with the air outlet of the hair dryer 20. The air inlet 1 forms an air inlet surface, thereby creating a stable airflow path between the diffuser nozzle 10 and the hair dryer 20.

[0075] The air outlet grille 2 forms an air outlet surface, which is perpendicular to the air inlet surface. Here, "perpendicular" means approximately perpendicular; in actual manufacturing, the angle between the air outlet and air inlet surfaces may have some error, which is acceptable within ±5°. In other words, the perpendicularity of the air outlet surface to the air inlet surface means that the angle between them is 85° to 95°.

[0076] The air inlet surface refers to the cross-section of the airflow as it passes through the air inlet 1, and it is not a physical structural surface. The air outlet surface is defined by the air inlet 1, and is equivalent to the cross-section of the air inlet 1 along its axial direction. The air outlet surface refers to the cross-section of the airflow after it passes through the air outlet grille 2, and it is not a physical structural surface. The air outlet surface is defined by the outer periphery of the air outlet grille 2, and is equivalent to the cross-section of the air outlet grille 2 along its axial direction.

[0077] In other words, the central axis of the air outlet grille 2 is perpendicular to the central axis of the air inlet 1. Similarly, this perpendicularity is approximate; in actual manufacturing, the angle between the central axis of the air outlet grille 2 and the central axis of the air inlet 1 may have a slight error, which is acceptable within ±5°. That is to say, the central axis of the air outlet grille 2 being perpendicular to the central axis of the air inlet 1 means that the angle between the central axis of the air outlet grille 2 and the central axis of the air inlet 1 is 85° to 95°.

[0078] The air outlet duct 3 is formed between the air inlet 1 and the air outlet grille 2. After the airflow enters the air inlet 1, it reaches the air outlet grille 2 through the air outlet duct 3 and is then discharged from the diffuser nozzle 10.

[0079] The air guide 4 is located in the air outlet duct 3. The air guide 4 is configured to deflect the airflow direction entering from the air inlet 1 by 90°, so that the outlet direction is perpendicular to the inlet direction. In other words, the air guide 4 is designed to guide and deflect the airflow, making the outlet direction approximately perpendicular to the outlet surface, and the inlet direction approximately perpendicular to the inlet surface. Similarly, since the angle between the outlet and inlet surfaces may have some error in actual processing and production, the air guide 4 will also cause some error in the deflection angle of the outlet direction relative to the inlet direction. In practice, the air guide 4 can be configured to deflect the airflow direction entering from the air inlet 1 by 85° to 95°, and the deflection angle of the outlet direction relative to the inlet direction can be either 85° to 95°.

[0080] Thus, by optimizing the structure of the air inlet 1, the air outlet grille 2, and the guide element 4, the diffuser nozzle 10 achieves an approximate 90° deflection of the airflow direction within the air outlet duct 3, making the outlet direction perpendicular to the inlet direction. This allows the concentrated airflow entering from the air inlet 1 to be adjusted into a vertically diffused airflow, which is then discharged through the air outlet grille 2. A portion of the airflow exits from the air inlet 1 towards the area of ​​the air outlet grille 2 near the inlet surface, effectively shortening the airflow path. The remaining airflow, under the action of the guide element 4, diffuses towards the remaining area of ​​the air outlet grille 2. The diffuser not only significantly increases the air outlet area but also improves the uniformity of airflow distribution to different areas of the air outlet grille 2, thereby improving air outlet uniformity and avoiding the risk of burns caused by localized high temperatures. This solves the problems of uneven air outlet and high noise caused by airflow directly hitting the air outlet grille 2 in related technologies. The orderly guidance of airflow by the guide component 4 can also reduce turbulence and noise generation, and improve user comfort. In addition, the vertical arrangement of the air inlet and air outlet surfaces is conducive to reducing the height of the diffuser nozzle 10 in the radial direction of the air inlet 1, thus facilitating storage.

[0081] The air guide 4 and the air outlet grille 2 are spaced apart.

[0082] The diffuser nozzle 10 also includes a housing 5, which, together with the air outlet grille 2, defines the air outlet duct 3. The end of the housing 5 facing the air outlet of the dryer 20 defines the air inlet 1. The guide element 4 is disposed inside the housing 5, and is stably supported by the housing to ensure its structural stability. The guide element 4 and the air outlet grille 2 form an effective interval cooperation, which can initially guide and divert the airflow, so that the airflow transitions smoothly along the predetermined path, reduces turbulence caused by sudden changes or collisions in the airflow, and improves the orderliness of the airflow.

[0083] See Figures 3 to 5 In one embodiment, the diffuser nozzle 10 further includes a wind deflector 6, which is located in the air outlet duct 3. The wind deflector 6 is parallel to the air outlet surface and spaced apart from the air outlet grille 2. The wind deflector 6 is located in the area directly behind the air outlet grille 2 and is centered along the air outlet direction.

[0084] The wind deflector 6 is located directly behind the air outlet grille 2 and is centrally positioned along the air outlet direction, meaning it is situated in the middle of the cross-section of the air outlet grille 2. This design prevents high-speed airflow from directly impacting the central area of ​​the air outlet grille 2, suppressing localized high-frequency aerodynamic noise caused by the impact. Furthermore, the airflow around the wind deflector 6 can flow between it and the air outlet grille 2, achieving secondary airflow diversion and pressure regulation, balancing the wind speed distribution across the air outlet cross-section, effectively eliminating excessively high or low local wind speeds, and improving the uniformity of airflow throughout the entire outlet area.

[0085] In one specific embodiment, the wind deflector 6 is configured as a wind deflector plate 61. The plate-like structure can achieve the above-mentioned flow diversion and rectification effects, and also reduce the weight of the wind deflector 6, thereby avoiding excessive weight of the diffuser nozzle 10, and facilitating processing and production.

[0086] The wind deflector 6 is positioned in the airflow path between the air guide 4 and the air outlet grille 2. This allows the wind deflector 6 to be closer to the air outlet grille 2, thereby optimizing the airflow path and effectively guiding the guided airflow to the air outlet grille 2. This further enhances the rectification effect, avoids turbulence, and ensures a clear airflow path and minimal disturbance during the operation of the entire system, contributing to long-term operational stability and performance consistency.

[0087] See Figure 9 In one embodiment, the air guide 4 includes a plurality of first air guide plates 41 and a plurality of second air guide plates 42.

[0088] Multiple first air guide plates 41 are spaced apart along the air inlet direction. The first air guide plates 41 are arc-shaped.

[0089] Multiple second air guide plates 42 are spaced apart along a first direction perpendicular to the air inlet and outlet directions. The second air guide plates 42 are arc-shaped.

[0090] The arc-shaped design of the first air guide plate 41 and the second air guide plate 42 not only enables the effective deflection of the airflow direction, but also allows the airflow to smoothly transition at the guide member 4, avoiding sudden reversals or violent disturbances caused by corners. Compared with the straight air guide structure, the arc-shaped air guide plate can better fit the airflow path and improve the airflow efficiency.

[0091] Each second air guide plate 42 intersects with at least one first air guide plate 41 to jointly divide the air outlet duct 3 into multiple independent sub-channels 31, so that the airflow is guided separately in each channel, effectively suppressing large-scale disturbances and cross interference; realizing the orderly diffusion of airflow in the air outlet duct 3, and improving the uniformity and stability of the overall air outlet.

[0092] Thus, through the structure of the guide component 4, the air outlet duct 3 is divided into multiple sub-channel grids on the corresponding air outlet surface, so that after the airflow enters the air supply duct, it can be diverted to various areas in the air outlet duct 3, and then it can be discharged from different directions of the air outlet grille 2. Airflow will also pass through the area of ​​the air outlet grille 2 that is far away from the air inlet 1, improving the uniformity of airflow, avoiding excessively high or low local wind speeds, and reducing high-frequency noise.

[0093] Specifically, the first air guide plate 41 is connected to the housing 5 at both ends along the first direction, so that the housing 5 can be used to support and fix the first air guide plate 41 to prevent resonance when the blower 100 is in use. Furthermore, the second air guide plate 42 intersects with the first air guide plate 41, that is, the second air guide plate 42 is connected to the first air guide plate 41, so that the first air guide plate 41 can be used to support and fix the second air guide plate 42.

[0094] In one specific embodiment, the air guide 4 is integrally formed with the housing 5. The integrated design of the air guide 4 and the housing 5 facilitates a compact layout of the overall structure; the housing 5 simultaneously supports the air guide 4 and defines the air duct 3, simplifying the installation process and improving assembly efficiency; and achieving a dual improvement in aerodynamic and acoustic performance without significantly increasing volume and complexity.

[0095] See Figure 9 In one specific embodiment, a pair of second air guide plates 42 are provided, and the pair of second air guide plates 42 gradually move away from each other along the air inlet direction. That is, the distance between the pair of second air guide plates 42 gradually increases along the air inlet direction. In this way, by having the pair of second air guide plates 42 gradually move away from each other along the direction away from the air inlet 1, the airflow can be guided to diffuse to a place farther away from the air inlet 1 and to the periphery of the air outlet duct 3, avoiding dead corners in the air outlet, and at the same time preventing the airflow from concentrating in the central area of ​​the air outlet duct 3, further reducing the wind speed, improving the air outlet coverage area and air outlet uniformity, and also reducing frizzy hair after blowing.

[0096] See Figure 9 In one specific embodiment, among the plurality of first air guide plates 41, the first air guide plate 41 away from the air inlet 1 includes a first plate 411 and a second plate 412, and the first plate 411 and the second plate 412 are respectively located on the side of a pair of second air guide plates 42 away from each other.

[0097] This design ensures uniform airflow and low noise while simplifying the mold structure and reducing processing difficulty and production costs.

[0098] The wind deflector 6 is located at the end of the air guide 4 facing the air outlet grille 2. In this way, the air guide 4 can support the wind deflector 6, improving the installation stability of the wind deflector 6 and preventing vibration and noise.

[0099] Specifically, the wind deflector 6 connects two adjacent first air guide plates 41 in the air guide 4, and the two first air guide plates 41 are connected to each other at the end away from the wind deflector 6 to form a closed structure.

[0100] Thus, the first air guide plate 41 can support the wind deflector 6, while improving the installation strength of the air guide 4 and the wind deflector 6, improving structural stability, and reducing noise caused by vibration and structural resonance. By connecting the ends of the two first air guide plates 41 away from the wind deflector 6, a closed space is formed between the two first air guide plates 41 and the wind deflector 6, preventing airflow from entering the space and causing noise. The two first air guides can also be used to guide the airflow.

[0101] Of course, since the wind deflector 6 is centrally located relative to the air outlet grille 2, the positions of the two adjacent first air guide plates 41 connected to the wind deflector 6 are also centrally located relative to the air outlet grille 2.

[0102] See Figures 3 to 4 In one specific embodiment, the wind deflector 6 extends to the housing 5 at both ends along the first direction. That is, the wind deflector 6 is connected to the housing 5 at both ends along the first direction, so that the housing 5 can be used to support and fix the wind deflector 6, which further improves the connection stability of the wind deflector 6, helps to further reduce the generation of structural vibration and vibration noise, and can also prevent the wind deflector 6 from shifting and affecting the airflow distribution.

[0103] Furthermore, since the wind deflector 6 and the first air guide plate 41 are respectively connected to the housing 5 at both ends along the first direction, a closed space is formed between the wind deflector 6 and the two first air guide plates 41, and the airflow cannot enter the closed space.

[0104] In one specific embodiment, four first air guide plates 41 are provided. Of course, the number of first air guide plates 41 is not limited to this. In other embodiments, the number of first air guide plates 41 can also be three, five or more.

[0105] See Figure 9 In this embodiment, a pair of second air guide plates 42 intersect with four first air guide plates 41. Along the air intake direction, each second air guide plate 42 passes through the two middle first air guide plates 41 and extends to the two end first air guide plates 41. A baffle 6 connects to the two middle first air guide plates 41, and is located at the end of these two first air guide plates 41 facing the air outlet grille 2. The ends of these two first air guide plates 41 away from the baffle 6 are connected to each other. Thus, a closed space is formed between the baffle 6 and the two first air guide plates 41, preventing airflow from entering this closed space.

[0106] Thus, see Figure 4 and Figure 9 On the corresponding air outlet surface, the air guide 4 divides the air supply duct into seven sub-channels 31 grids.

[0107] The wind deflector 6 extends to the housing 5 along a first direction and is connected to the housing 5. The first direction is perpendicular to the air inlet direction and the air outlet direction.

[0108] This configuration, through the connection between the wind deflector 6 and the housing 5, further improves the connection stability of the wind deflector 6, which is conducive to further reducing structural vibration and vibration noise, and can also prevent the wind deflector 6 from shifting and affecting the airflow distribution.

[0109] See Figure 10 In one embodiment, the diffuser nozzle 10 further includes a grille 7, which is disposed on the guide member 4 and has a curved surface.

[0110] With this configuration, the airflow passing through the guide 4 can be further rectified by placing the grille 7 on the guide 4. This not only breaks down the vortices in the airflow into smaller, easily attenuated vortices, but also reduces the airflow noise in the diffuser nozzle 10 and further improves the uniformity of airflow distribution. Furthermore, the curved surface of the grille 7 allows it to better adapt to the airflow trajectory and effectively prevents the airflow from directly impacting the grille and generating turbulence.

[0111] Specifically, the grille 7 is located at one end of the guide member 4 near the air outlet grille 2. This further divides the airflow after it has been diverted by the guide member 4, so that the airflow is further refined and rectified as it flows out of the guide member 4, ensuring the gentleness and stability of the airflow and avoiding excessive turbulence.

[0112] See Figure 10 In one specific embodiment, the grille 7 has a first end 71 and a second end 72 arranged opposite to each other along the air inlet direction. The first end 71 is connected to the first air guide plate 41 closest to the air inlet 1, and the second end 72 is connected to the first air guide plate 41 furthest from the air inlet 1. The grille 7 also has a connecting portion 73 connected to the wind deflector 6. Along the air outlet direction, the connecting portion 73 is located on the side of the first end 71 facing away from the air outlet grille 2, and the connecting portion 73 is located at the end of the second end 72 facing away from the air outlet grille 2. In this way, the airflow can flow more towards the central area of ​​the air outlet grille 2 after passing through the grille 7.

[0113] See Figure 11 In another specific embodiment, the grille 7 includes two sub-grilles 74, which are located on both sides of the windbreak 6, and each sub-grille 74 is connected to the first air guide plate 41 at both ends along the air inlet direction. Thus, the processing and installation of the grille 7 are relatively simple.

[0114] In this configuration, the distance from the end of each sub-grate 74 closest to the wind deflector 6 to the air outlet surface is greater than the distance from the end furthest from the wind deflector 6 to the air outlet surface. This allows more airflow to reach the central area of ​​the air outlet grille 2 after passing through the grille 7.

[0115] The grid component 7 has multiple through holes with a diameter of 0.25 to 3 mm.

[0116] With this configuration, the through holes of the grille 7 can segment the airflow, allowing it to be distributed more evenly and finely across the air outlet duct 3, preventing excessively high or low wind speeds in certain areas and resulting in better noise reduction. Tests have shown that, compared to not using the grille 7, through holes within this diameter range can reduce noise by 1.5–2.5 dB.

[0117] Specifically, the through holes on the grille 7 are of uniform size and evenly spaced, which can achieve a uniform airflow effect and effectively reduce noise.

[0118] In this embodiment, the grille 7 is made of metal, which is not only lightweight and thin but also sturdy, thereby reducing resonance. Of course, the grille 7 can also be made of plastic or other commonly used materials.

[0119] See Figure 8 The housing 5 includes an outer shell 51 and an inner shell 52, with the inner shell 52 located inside the outer shell 51. The air outlet grille 2 is connected to both the inner shell 52 and the outer shell 51. The air outlet grille 2 includes multiple air outlet holes 21, all of which are located within the inner space defined by the inner shell 52. Along the air outlet direction, the distance L1 between the end of the air inlet 1 near the air outlet grille 2 and the end of the inner shell 52 connected to the air outlet grille 2 is 13–30 mm.

[0120] This configuration allows for sufficient space between the air outlet and the air grille 2 within the housing 5, enabling ample space for airflow to diffuse. This facilitates airflow diffusion across the entire surface of the air grille 2, reducing airflow velocity and noise, while also improving airflow uniformity and enhancing the user experience.

[0121] The outer shell 51 and the inner shell 52 are spaced apart. In this way, a heat insulation layer can be formed between the outer shell 51 and the inner shell 52 to prevent heat from being dissipated from the shell 5, reduce the outlet air temperature, and also prevent the shell 5 from getting too hot and causing burns.

[0122] See Figure 8 Along the air outlet direction, the distance L2 between the end of the air inlet 1 near the air outlet grille 2 and the end of the outer casing 51 connected to the air outlet grille 2 is 20-40mm, and L2>L1.

[0123] By setting the connection position between the air outlet grille 2 and the inner and outer shells 51 and the distance relationship between them and the air outlet, the air outlet grille 2 is made concave, which not only looks beautiful, but also allows the air outlet range to be limited by the part of the air outlet grille 2 located between the inner and outer shells 51, so as to form a gathering effect.

[0124] The connection between the air outlet grille 2 and the inner shell 52 and the outer shell 51 is formed along the circumference of the air outlet grille 2. The air outlet surface is defined by the perimeter of the connection between the air outlet grille 2 and the outer shell 51.

[0125] Example 2

[0126] This embodiment also provides a hair dryer 100. Similar to the previous embodiment 1, the hair dryer 100 also includes a hair dryer 20 and a diffuser nozzle 10.

[0127] Based on this, the hair dryer 20 of this embodiment is basically the same as that of the previous embodiment 1; however, the structure of the diffuser nozzle 10 of this embodiment differs from that of the previous embodiment 1. The difference lies in the different structures of the air guide 4 and the housing 5. Correspondingly, the connection between the air baffle 6, the grille 7, and the air guide 4 also changes accordingly.

[0128] See Figure 12 In this embodiment, the guide member 4 is configured as a guide plate 43, which is configured to deflect the air outlet direction by 90° relative to the air inlet direction.

[0129] In addition, a flow guide 8 is formed on the housing 5, and the flow guide 8 is located on the side of the flow guide plate 43 away from the air inlet 1.

[0130] In one specific embodiment, the flow guide 8 is a curved structure that protrudes from the housing 5 toward the flow guide plate 43, thereby guiding the airflow.

[0131] In another specific embodiment, the flow guide 8 can also be configured such that the housing 5 is bent toward the flow guide plate 43 to form the flow guide 8. In this way, the flow guide 8 can guide the airflow, and at the same time, it can reduce the material used in the housing 5 and save production costs.

[0132] Apart from this difference, the rest of the technical content is exactly the same as in the previous embodiment 1, and will not be repeated here.

[0133] The structure, features and effects of this application have been described in detail above with reference to the embodiments shown in the accompanying drawings. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments with equivalent changes, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. A diffuser nozzle for connection to a hair dryer, characterized in that, The diffuser nozzle includes: An air inlet is used to connect with the air outlet of the hair dryer and form an air inlet surface; An air outlet grille forms an air outlet surface, which is perpendicular to the air inlet surface. An air outlet duct is formed between the air inlet and the air outlet grille; A flow guide is located in the air outlet duct. The flow guide is configured to deflect the airflow direction entering from the air inlet by 90° so that the air outlet direction is perpendicular to the air inlet direction.

2. The diffuser nozzle according to claim 1, characterized in that, It also includes a wind deflector, which is located in the air outlet duct, is parallel to the air outlet surface and is spaced apart from the air outlet grille, is located in the area directly behind the air outlet grille and is centered along the air outlet direction.

3. The diffuser nozzle according to claim 2, characterized in that, The wind deflector is positioned on the airflow path between the air guide and the air outlet grille.

4. The diffuser nozzle according to claim 2, characterized in that, The flow guide includes: Multiple first air guide plates are spaced apart along the air inlet direction, and the first air guide plates are arc-shaped; Multiple second air guide plates are spaced apart along a first direction perpendicular to the air inlet and outlet directions, and the second air guide plates are arc-shaped; wherein each second air guide plate intersects with at least one first air guide plate to jointly divide the air outlet duct into multiple independent sub-channels.

5. The diffuser nozzle according to claim 4, characterized in that, The second air guide is provided in pairs, and the pair of second air guides gradually move away from each other along the air inlet direction.

6. The diffuser nozzle according to claim 5, characterized in that, Among the plurality of first air guide plates, the first air guide plate away from the air inlet includes a first plate and a second plate, the first plate and the second plate being located on the side of a pair of second air guide plates opposite to each other.

7. The diffuser nozzle according to claim 4, characterized in that, The wind deflector is located at the end of the air guide that faces the air outlet grille.

8. The diffuser nozzle according to claim 7, characterized in that, The wind deflector connects two adjacent first air guide plates in the air guide, and the two first air guide plates are connected to each other at the end away from the wind deflector to form a closed structure.

9. The diffuser nozzle according to claim 2, characterized in that, The diffuser nozzle also includes a housing, which, together with the air outlet grille, defines the air outlet duct. The wind deflector extends to both ends of the housing along a first direction and is connected to the housing. The first direction is perpendicular to the air inlet direction and the air outlet direction.

10. The diffuser nozzle according to claim 2, characterized in that, The diffuser nozzle also includes a grille, which is disposed on the air guide and has a curved surface.

11. The diffuser nozzle according to claim 10, characterized in that, The grille is located at one end of the air guide near the air outlet grille.

12. The diffuser nozzle according to claim 10, characterized in that, The grid component has multiple through holes, the diameter of which is 0.25 to 3 mm.

13. The diffuser nozzle according to claim 1, characterized in that, The diffuser nozzle also includes a housing, which includes an outer shell and an inner shell. The inner shell is located inside the outer shell. The air outlet grille is connected to the inner shell and the outer shell respectively. The air outlet grille includes multiple air outlet holes, and the multiple air outlet holes are all located in the inner space defined by the inner shell. Along the air outlet direction, the distance L1 between the end of the air inlet near the air outlet grille and the end of the inner shell connected to the air outlet grille is 13mm to 30mm.

14. The diffuser nozzle according to claim 13, characterized in that, The outer shell and the inner shell are spaced apart. Along the air outlet direction, the distance L2 between the end of the air inlet near the air outlet grille and the end of the outer shell connected to the air outlet grille is 20mm to 40mm, and L2>L1.

15. A diffuser nozzle for connection to a hair dryer, characterized in that, The diffuser nozzle includes: An air inlet is used to connect to the air outlet of the hair dryer; An air outlet grille, wherein the central axis of the air outlet grille is perpendicular to the central axis of the air inlet; An air outlet duct is formed between the air inlet and the air outlet grille; A flow guide is located in the air outlet duct. The flow guide is configured to deflect the airflow direction entering from the air inlet by 90° so that the air outlet direction is perpendicular to the air inlet direction.

16. A hair dryer comprising a fan and an air outlet, the fan being used to generate airflow, characterized in that, The blowing device further includes a diffuser nozzle as described in any one of claims 1 to 15, wherein the air inlet is connected to the air outlet.

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