Diffuser and care appliance

Abstract

The utility model discloses a diffuser and a nursing appliance, and the diffuser comprises a housing which is provided with an air inlet; the air outlet piece is arranged on the shell, the air outlet piece is provided with an air outlet, and the air outlet piece and the shell define a diffusion cavity communicating with the air inlet and the air outlet; at least part of the first flow guide part is arranged in the diffusion cavity and located between the air inlet and the air outlet part, and a first flow guide channel is formed between the peripheral edge of the first flow guide part and the shell so that airflow flowing to the first flow guide part can be guided to the air outlet part through the first flow guide channel. Therefore, the diffuser can play a role in shunting the airflow flowing into the air inlet, so that the flow speed of the airflow can be reduced, and the effect of reducing noise can be achieved. Due to the fact that the airflow flowing into the air inlet is divided, the directivity of the fluid at the air outlet can be weakened, and hair of a user cannot be blown disorderly.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to a diffuser and care device. Background Technology

[0002] A diffuser is an accessory for a hair dryer of known forms. A diffuser is attached to the air outlet end of the hair dryer and is used to reduce the speed of the airflow emitted from the hair dryer before it reaches the user's hair.

[0003] A diffuser typically includes a housing and a grille. The housing has an air inlet end, an air outlet end larger than the air inlet end, and a tapered wall extending between the air inlet end and the air outlet end. The air inlet end includes an air inlet for receiving airflow from a blower. The wall of the housing defines a diffused air chamber in which the airflow velocity decreases as the cross-sectional area of ​​the air chamber increases. The grille is connected to the air outlet end of the diffuser and provides an air outlet from which air is emitted from the diffuser.

[0004] In existing technologies, diffusers have perforated grids inside their internal chambers for flow diversion and noise reduction. However, this noise reduction method does not provide for zoned flow guidance and uniform flow, especially when the interior is bowl-shaped and the air outlet is also concave bowl-shaped. This results in the airflow and fluid direction in different areas of the bowl-shaped air outlet surface not being precisely adjusted. For example, the airflow velocity in the central area is higher, but the direction remains unchanged. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a diffuser that can divert the airflow flowing into the air inlet, thereby reducing the airflow velocity and thus reducing noise. Because the airflow into the air inlet is divided, the directionality of the fluid at the air outlet is reduced, preventing it from blowing the user's hair around.

[0006] This utility model further proposes a nursing device.

[0007] A diffuser according to a first aspect of the present invention includes: a housing having an air inlet; an air outlet disposed in the housing having an air outlet, the air outlet and the housing defining a diffusion cavity communicating with the air inlet and the air outlet; and a first guide member at least partially disposed within the diffusion cavity and located between the air inlet and the air outlet, wherein a first guide channel is formed between the outer peripheral edge of the first guide member and the housing to guide the airflow flowing to the first guide member to the air outlet through the first guide channel.

[0008] Therefore, this diffuser can divert the airflow flowing into the air inlet, thereby reducing the airflow velocity and thus reducing noise. Because the airflow into the air inlet is divided, the directionality of the fluid at the air outlet is reduced, preventing it from blowing the user's hair around.

[0009] According to some embodiments of the present invention, the first guide member includes: a first guide portion corresponding to the air inlet; a second guide portion connected to the outer peripheral edge of the first guide portion and bent relative to the first guide portion toward the air outlet member, wherein the second guide portion and the housing form the first guide channel.

[0010] According to some embodiments of the present invention, the first guide portion is configured to be recessed toward the air outlet component.

[0011] According to some embodiments of the present invention, the first guide member further includes: a plurality of guide strips, the plurality of guide strips being disposed on the side of the first guide portion facing the air inlet, the plurality of guide strips being distributed circumferentially in the first guide portion and extending from the inner side of the first guide portion to the edge.

[0012] According to some embodiments of the present invention, the guide strip is constructed in an arc shape in its extending direction; and / or the height of the guide strip increases in the direction extending towards the edge.

[0013] According to some embodiments of this utility model, the maximum diameter of the air inlet is d1, the maximum diameter of the first guide is d2, and d1 and d2 satisfy the relationship: d2 > 1.3d1; and / or the area of ​​the air inlet is S1, the area of ​​the first guide is S2, and S1 and S2 satisfy the relationship: S2 > 3S1.

[0014] According to some embodiments of the present invention, the first guide member is integrally formed on the air outlet member, and the first guide member is located in the middle of the air outlet member.

[0015] According to some embodiments of the present invention, the central structure of the air outlet is a plane; or the central structure of the air outlet is a convex arc surface protruding towards the first guide member; or the central structure of the air outlet is a convex arc surface protruding away from the first guide member.

[0016] According to some embodiments of the present invention, the air outlet component includes an air outlet surface and an air outlet column, the air outlet column is disposed on the air outlet surface, and the air outlet surface is provided with an air outlet hole; wherein, a noise reduction component is attached to the side of the air outlet surface facing the first air guide component.

[0017] According to some embodiments of this utility model, corresponding to the position of the air outlet column, the noise reduction component is provided with an avoidance opening, and the noise reduction component is provided with an air passage hole, the cross-sectional area of ​​the air passage hole being smaller than the cross-sectional area of ​​the air outlet hole.

[0018] According to some embodiments of the present invention, the first guide member overlaps with or covers the air inlet when projected along the air inlet direction.

[0019] According to some embodiments of the present invention, the diffuser further includes: a second flow guide, the second flow guide being at least partially disposed within the diffusion cavity and located between the air inlet and the first flow guide, the second flow guide being disposed around the air inlet.

[0020] According to some embodiments of the present invention, the air inlet is annular in structure, and the outlet of the second guide member is located inside the air inlet along the projection of the air inlet direction.

[0021] According to some embodiments of the present invention, the cross-sectional area of ​​the second guide member decreases in the air inlet direction.

[0022] According to some embodiments of the present invention, the second guide member is constructed in an annular shape, and a vent hole is provided on the wall of the second guide member; or the second guide member includes a plurality of arc-shaped guide vanes, the plurality of arc-shaped guide vanes are spaced apart in the circumferential direction of the air inlet, and in the air inlet direction of the air inlet, the plurality of arc-shaped guide vanes move closer to the central axis of the air inlet.

[0023] According to some embodiments of the present invention, the housing includes an outer shell and an inner shell, the inner shell being disposed within the outer shell, the outer shell at least partially defining the air inlet, and the second air guide being integrally formed on the inner shell.

[0024] According to some embodiments of this utility model, the area of ​​the air inlet is S1, and the minimum ventilation area between the outlets of the first guide member and the second guide member is S3. S1 and S3 satisfy the relationship: S3 > 0.5S1.

[0025] According to some embodiments of the present invention, the diffuser further includes: a third flow guide, the air inlet is annular, the third flow guide is disposed in the diffusion cavity and located within the second flow guide, a second flow channel corresponding to the air inlet is formed between the second flow guide and the third flow guide; in the air inlet direction, the cross-sectional area of ​​the second flow channel first increases and then decreases, the cross-sectional area of ​​the third flow guide first decreases and then increases, and the third flow guide is integrally formed on the first flow guide.

[0026] A diffuser according to a second aspect of the present invention includes: a housing having an air inlet; an air outlet having an air outlet disposed on the housing and having an air outlet, the air outlet and the housing defining a diffusion cavity communicating with the air inlet and the air outlet; the air outlet includes an air outlet surface and an air outlet column, the air outlet column being disposed on the air outlet surface, the air outlet surface having an air outlet hole, and a noise reduction component being attached to the side of the air outlet surface facing the first air guide.

[0027] According to some embodiments of this utility model, corresponding to the position of the air outlet column, the noise reduction component is provided with an avoidance opening, and the noise reduction component is provided with an air passage hole, the cross-sectional area of ​​the air passage hole being smaller than the cross-sectional area of ​​the air outlet hole.

[0028] According to some embodiments of the present invention, the diffuser further includes: a first guide member, at least partially disposed within the diffusion cavity and located between the air inlet and the air outlet, wherein a first guide channel is formed between the outer peripheral edge of the first guide member and the housing, so as to guide the airflow flowing to the first guide member to the air outlet through the first guide channel; the first guide member overlaps with or covers the air inlet along the air inlet direction projection.

[0029] According to some embodiments of the present invention, the first guide member includes: a first guide portion corresponding to the air inlet; a second guide portion connected to the outer peripheral edge of the first guide portion and bent relative to the first guide portion toward the air outlet, wherein the second guide portion and the housing form the first guide channel; the first guide portion is configured to be recessed toward the air outlet; the first guide member further includes: a plurality of guide strips disposed on the side of the first guide portion toward the air inlet, the plurality of guide strips being distributed circumferentially in the first guide portion and extending from the middle of the first guide portion toward the edge.

[0030] According to some embodiments of the present invention, the central structure of the air outlet is a plane; or the central structure of the air outlet is a convex arc surface protruding towards the first guide member; or the central structure of the air outlet is a convex arc surface protruding away from the first guide member.

[0031] A diffuser according to a third aspect embodiment of the present invention includes: a housing having an air inlet; an air outlet disposed on the housing having an air outlet, the air outlet and the housing defining a diffusion cavity communicating with the air inlet and the air outlet; a first guide member including a first guide portion and a second guide portion, the second guide portion being connected to the outer peripheral edge of the first guide portion; and a third guide member, wherein the cross-sectional area of ​​the third guide member first decreases and then increases in the air inlet direction.

[0032] A nursing device according to a fourth aspect of the present invention includes: a hair dryer; and the aforementioned diffuser, wherein the diffuser is disposed on the hair dryer, and the air inlet is connected to the hair dryer.

[0033] 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

[0034] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 This is a schematic diagram of the structure of a diffuser according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of a diffuser containing a noise reduction component according to an embodiment of the present invention;

[0037] Figure 3 This is a cross-sectional view of the diffuser according to this utility model;

[0038] Figure 4 This is a schematic diagram of the structure of the first flow guide component of this utility model, which includes a flow guide strip.

[0039] Figure 5 This is a schematic diagram of the diffuser with an air inlet according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the air outlet component with a convex arc surface according to an embodiment of the present utility model;

[0041] Figure 7 This is a cross-sectional view of a diffuser according to another embodiment of the present invention;

[0042] Figure 8 This is a structural schematic diagram of the first flow guide component of this utility model, which includes a second flow guide portion;

[0043] Figure 9This is a structural schematic diagram of the first guide member and the air outlet member relative to each other according to another embodiment of the present utility model.

[0044] Figure label:

[0045] 100. Diffuser;

[0046] 10. Shell; 101. Outer shell; 102. Inner shell;

[0047] 11. Air inlet;

[0048] 20. Air outlet component; 21. First airflow channel; 22. Air outlet surface; 221. Air outlet hole;

[0049] 23. Air outlet column; 24. Diffuser cavity; 25. Air outlet;

[0050] 30. First guide element; 31. First guide section; 32. Second guide section; 33. Guide strip;

[0051] 40. Noise reduction components; 41. Clearance opening; 42. Air vent;

[0052] 50. Second flow guide; 60. Third flow guide; 70. Second flow guide channel; 80. Convex arc surface. Detailed Implementation

[0053] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0054] The following is for reference. Figures 1-9 Describes a diffuser 100 according to an embodiment of the present invention.

[0055] Reference Figures 1-3 As shown, the diffuser 100 of the first aspect embodiment of the present invention includes: a housing 10, an air outlet 20, and a first guide member 30. The housing 10 is provided with an air inlet 11, the air outlet 20 is disposed in the housing 10, and the air outlet 20 is provided with an air outlet 25. The air outlet 20 and the housing 10 define a diffusion cavity 24 that connects the air inlet 11 and the air outlet 25. The first guide member 30 is at least partially disposed in the diffusion cavity 24, and the first guide member 30 is located between the air inlet 11 and the air outlet 20. A first guide channel 21 is formed between the outer peripheral edge of the first guide member 30 and the housing 10, so that the airflow flowing to the first guide member 30 can be guided to the air outlet 20 through the first guide channel 21.

[0056] Specifically, the housing 10 of the diffuser 100 is connected to the hair dryer, and the part of the housing 10 connected to the hair dryer is provided with an air inlet 11, which allows the air blown out by the hair dryer to enter through the air inlet 11.

[0057] The air outlet 20 is disposed on the housing 10, and the housing 10 provides installation space for the air outlet 20. In addition, the air outlet 20 is provided with an air outlet 25, which allows the air blown by the hair dryer to be blown onto the hair through the air outlet 25.

[0058] Furthermore, the air outlet 20 and the housing 10 define a diffuser cavity 24 that connects the air inlet 11 and the air outlet 25. The diffuser cavity 24 can guide the direction of airflow, in which the speed of the airflow decreases as the cross-section of the diffuser cavity 24 increases.

[0059] Furthermore, the first guide member 30 is at least partially disposed within the diffuser cavity 24, thereby guiding the airflow within the diffuser cavity 24. Since the first guide member 30 is located between the air inlet 11 and the air outlet 20, the airflow from the air inlet 11 can be guided to the air outlet 25 through the first guide member 30.

[0060] Furthermore, a first guide channel 21 is formed between the outer peripheral edge of the first guide member 30 and the housing 10. A portion of the airflow from the air inlet 11 can be guided through the first guide channel 21 to the air outlet 20, and then flow out from the air outlet 25. This can divert the airflow flowing into the air inlet 11, preventing the airflow from concentrating in the middle area, thus reducing the airflow velocity and achieving noise reduction. Because the airflow flowing into the air inlet 11 is divided, the fluid velocity at the air outlet 25 is reduced, preventing the user's hair from being blown around.

[0061] Therefore, the diffuser 100 can divert the airflow into the air inlet 11, thereby reducing the airflow velocity and thus reducing noise. Because the airflow into the air inlet 11 is divided, the directionality of the fluid at the air outlet 25 is reduced, preventing the user's hair from being blown around.

[0062] According to some embodiments of this utility model, such as Figure 3 As shown, the first guide member 30 includes: a first guide portion 31 and a second guide portion 32. The first guide portion 31 corresponds to the air inlet 11. The second guide portion 32 is connected to the outer peripheral edge of the first guide portion 31. Moreover, the second guide portion 32 is bent relative to the first guide portion 31 towards the air outlet 20. A first guide channel 21 is formed between the second guide portion 32 and the housing 10.

[0063] The first guide section 31 corresponds to the air inlet 11, and the airflow flowing into the air inlet 11 can flow to the air outlet 25 under the guidance of the first guide section 31.

[0064] Furthermore, the second guide section 32 is connected to the outer peripheral edge of the first guide section 31, so that the airflow flowing towards the first guide section 31 is slowed down and can flow towards the second guide section 32 to be slowed down again. Since the second guide section 32 is bent relative to the first guide section 31 towards the air outlet 20, it can help to better guide the airflow direction toward the air outlet 25, thereby ensuring that the airflow can flow along a predetermined path.

[0065] Furthermore, a first guide channel 21 is formed between the second guide section 32 and the housing 10, which allows the airflow flowing toward the first guide section 31 to flow from the first guide channel 21 to the air outlet 25, thereby diverting the airflow flowing toward the first guide section 31.

[0066] According to some embodiments of this utility model, such as Figure 3 As shown, the first guide section 31 is recessed toward the air outlet 20.

[0067] The first guide section 31 is recessed towards the air outlet 20, forming a groove in which fluid can circulate, thus making the airflow towards the air outlet 25 gentler. The airflow entering from the air inlet 11 is buffered by the first guide section 30 and then deflected by the second guide section 32 before flowing towards the air outlet, significantly reducing the airflow velocity. This lower velocity ensures that the diffuser 100 does not mess up the user's hair, thus guaranteeing both dryness and volume.

[0068] Furthermore, the first guide section 31 is recessed towards the air outlet 20, which can better guide the airflow and reduce the generation of turbulence and eddies, thereby reducing noise caused by irregular airflow movement.

[0069] According to some embodiments of this utility model, such as Figure 3 As shown, the first flow guide 30 further includes a plurality of flow guide strips 33, which are disposed on the side of the first flow guide portion 31 facing the air inlet 11. The plurality of flow guide strips 33 are distributed circumferentially in the first flow guide portion 31, and extend from the inner side of the first flow guide portion 31 towards the edge. Preferably, the plurality of flow guide strips 33 extend from approximately the middle of the first flow guide portion 31 towards the edge. This simplifies the structure of the flow guide strips 33 while ensuring their flow guiding function.

[0070] Multiple guide strips 33 are disposed on the side of the first guide section 31 facing the air inlet 11. The multiple guide strips 33 are distributed in a diffused manner. In this way, when the airflow flowing in from the air inlet 11 passes through the multiple guide strips 33, the multiple guide strips 33 can disperse the airflow to the surroundings through different shapes and angles.

[0071] Furthermore, multiple guide strips 33 are distributed circumferentially in the first guide section 31, wherein the multiple guide strips 33 can be evenly spaced along the circumferential direction of the first guide section 31, thereby dispersing the airflow evenly in the circumferential direction of the first guide section 31.

[0072] According to some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the guide strip 33 is constructed in an arc shape in its extending direction, and the height of the guide increases in the direction of extending towards the edge.

[0073] Among them, the guide strip 33 is constructed in an arc shape in its extension direction. The arc-shaped guide strip 33 can guide the airflow to flow more smoothly and reduce the generation of turbulence, thereby reducing the noise caused by irregular airflow movement.

[0074] Furthermore, the height of the guide strip 33 increases gradually in the direction extending towards the edge, allowing the airflow to diffuse more smoothly from the center to the edge. This gradual design helps reduce friction and collisions in the airflow, making the airflow more uniform and stable. After the airflow comes into contact with the first guide member 30, it will flow from the center to the edge under the action of the guide strip 33. During this process, the airflow will gradually diverge. By increasing the height of the guide strip 33, the airflow between the guide strips 33 can be prevented from being affected by the surrounding airflow, thus avoiding turbulence and noise.

[0075] Furthermore, the height of the guide strip 33 increases in the direction extending towards the edge. For example, the root of the guide strip 33 can be set to 2mm and the end of the edge of the guide strip 33 can be set to 5mm, which can reduce turbulence, reduce noise, reduce noise by 1dBA, and also even out the internal pressure, thereby reducing the maximum wind speed at the air outlet 25 by more than 10%.

[0076] According to some embodiments of the present invention, the maximum diameter of the air inlet 11 is d1, the maximum diameter of the first guide member 30 is d2, d1 and d2 satisfy the relationship: d2 > 1.3d1, the area of ​​the air inlet 11 is S1, the area of ​​the first guide member 30 is S2, and S1 and S2 satisfy the relationship: S2 > 3S1.

[0077] In this design, the maximum diameter d2 of the first guide element 30 is 1.3 times greater than the maximum diameter d1 of the air inlet 11. Thus, the first guide element 30 is arranged in an umbrella shape, and its cross-sectional area gradually increases from the center to the edge. As the cross-sectional area gradually increases, the flow velocity gradually decreases. Therefore, as the airflow moves from the center of the umbrella shape to the outer edge, the airflow velocity gradually decreases and the pressure gradually increases, thereby achieving a gradual diffusion effect.

[0078] Furthermore, the area S2 of the first guide element 30 is more than three times the area S1 of the air inlet 11. The larger guide element area can more effectively and evenly diffuse the airflow entering the air inlet 11. Compared with a smaller guide element, a larger guide element can cover a larger area, significantly reducing the wind speed and making the airflow more uniform and stable.

[0079] According to some embodiments of this utility model, such as Figure 3 As shown, the first guide element 30 is integrally formed on the air outlet element 20, and the first guide element 30 is located in the middle of the air outlet element 20.

[0080] The first air guide 30 is integrally formed with the air outlet 20. This integral design eliminates the installation process between the first air guide 30 and the air outlet 20, making the entire diffuser 100 more robust. Compared to a split design, integral forming avoids weak points caused by welding or splicing, thereby improving tensile, compressive, and torsional resistance.

[0081] Moreover, the first guide member 30 is connected to the middle of the air outlet member 20, which can make the airflow more evenly distributed on the surface of the first guide member 30, thereby making the air outlet more uniform.

[0082] According to some embodiments of the present invention, the middle part of the air outlet 20 is a plane, or the middle part of the air outlet 20 is a convex arc surface 80 protruding towards the first guide member 30, or the middle part of the air outlet 20 is a convex arc surface 80 protruding away from the first guide member 30.

[0083] The middle part of the air outlet 20 is flat, which facilitates the connection between the middle part of the air outlet 20 and the first guide 30, and also increases the contact area between the first guide 30 and the middle part of the air outlet 20, making the connection more stable.

[0084] Or, such as Figure 6 As shown, the central structure of the air outlet 20 is a convex arc surface 80 that protrudes towards the first guide member 30. The convex arc surface 80 can form a groove. When the fluid flows out from the air outlet 25 of the air outlet 20, the fluid can circulate in the groove of the air outlet 25, which can make the airflow gentler and thus prevent the user's hair from being blown away or scattered.

[0085] Alternatively, the central structure of the air outlet 20 is a convex arc surface 80 protruding away from the first guide member 30. The convex arc surface 80 can form a groove. After passing through the first guide member 30, the fluid flows into the groove, circulates in the groove, and then flows out from the air outlet 25 of the air outlet 20, thereby making the airflow gentler and further improving the air outlet effect.

[0086] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the air outlet component 20 includes an air outlet surface 22 and an air outlet column 23. The air outlet column 23 is disposed on the air outlet surface 22. The air outlet surface 22 is provided with an air outlet hole 221. A noise reduction component 40 is attached to the side of the air outlet surface 22 facing the first air guide component 30.

[0087] The air outlet column 23 is set on the air outlet surface 22. The air outlet column 23 can distribute the airflow more evenly. The air outlet surface 22 is provided with multiple air outlet holes 221, which can increase the number of air outlet positions and improve the air outlet efficiency.

[0088] Furthermore, a noise reduction component 40 is attached to the side of the air outlet 22 facing the first air guide 30. The noise reduction component 40 can easily absorb the noise and vibration generated between the first air guide 30 and the air outlet 20.

[0089] Furthermore, when the noise reduction component 40 is set as a sponge, since the sponge is a porous material with a large number of tiny air bubbles inside, these air bubbles can effectively absorb sound wave energy, thereby significantly reducing the noise level.

[0090] When the noise reduction component 40 is set as porous foam, since porous foam is a material containing a large number of tiny air bubbles, these air bubbles can effectively absorb sound wave energy, thereby significantly reducing the noise level.

[0091] The noise reduction component 40 can also be a fine mesh gauze, and the gauze can be multi-layered. The noise reduction component 40 is attached to the side of the air outlet surface 22 facing the first air guide component 30 by adhesive bonding or ultrasonic welding.

[0092] According to some embodiments of this utility model, such as Figure 2 As shown, at the position corresponding to the air outlet column 23, the noise reduction component 40 is provided with a clearance opening 41, and the noise reduction component 40 is provided with an air passage hole 42, the cross-sectional area of ​​the air passage hole 42 is smaller than the cross-sectional area of ​​the air outlet hole 221.

[0093] The noise reduction component 40 is equipped with a clearance opening 41 to prevent it from affecting the airflow of the air outlet column 23. The air passage 42 corresponds to the air outlet 221, preventing it from being blocked. However, the cross-sectional area of ​​the air passage 42 is smaller than that of the air outlet 221, which helps to reduce noise and filter the airflow. Furthermore, the smaller cross-sectional area of ​​the air passage 42 can further soften the airflow and reduce the airflow velocity, ensuring that the airflow ultimately blown from the diffuser 100 meets the user's requirements.

[0094] According to some embodiments of this utility model, such as Figure 3 As shown, the projection along the air inlet 11 in the air inlet direction shows that the first guide element 30 overlaps with or covers the air inlet 11.

[0095] The first guide element 30 is designed to overlap or cover the air inlet 11, which can increase the effective contact area with the airflow of the air inlet 11, thereby enabling a more uniform airflow distribution and reducing noise levels.

[0096] According to some embodiments of this utility model, such as Figure 3 As shown, the diffuser 100 further includes a second guide member 50, which is at least partially disposed within the diffuser cavity 24 and is located between the air inlet 11 and the first guide member 30, and is disposed around the air inlet 11.

[0097] The second guide element 50 is at least partially disposed within the diffuser cavity 24, which can improve the guiding effect within the diffuser cavity 24 and make the airflow more uniform.

[0098] The second guide element 50 is located between the air inlet 11 and the first guide element 30, that is, the second guide element 50 is located downstream of the air inlet 11 and upstream of the second guide element 30. In this way, the airflow flowing into the air inlet 11 is first guided by the second guide element 50, and then the airflow passing through the second guide element 50 passes through the first guide element 30. In this way, multiple flow channels can be formed, thereby enabling zoned airflow guidance and making the airflow gentler.

[0099] Furthermore, the second guide member 50 is arranged around the air inlet 11. The airflow flowing into the air inlet 11 first passes through the second guide member 50. Since a flow channel is formed inside the second guide member 50, the direction and speed of the airflow can be adjusted, and the airflow can also be ensured to flow along the expected path.

[0100] According to some embodiments of this utility model, such as Figure 3 and Figure 5 As shown, the air inlet 11 is annular in structure. The projection of the air inlet 11 along the air inlet direction shows that the outlet of the second guide 50 is located inside the air inlet 11.

[0101] The air inlet 11 is ring-shaped, which allows air to enter from multiple directions, thus making the air more evenly distributed in all directions and preventing the air from concentrating in a specific area.

[0102] According to some embodiments of this utility model, such as Figure 3 As shown, in the air inlet 11, the cross-sectional area of ​​the second guide member 50 decreases.

[0103] The decreasing cross-sectional area of ​​the second guide member 50 can accelerate the airflow entering the second guide member 50 and improve the airflow intake efficiency.

[0104] According to some embodiments of this utility model, such as Figure 3As shown, the second guide member 50 is constructed in an annular shape, and a vent hole is provided on the wall of the second guide member 50. Alternatively, the second guide member 50 may include multiple arc-shaped guide vanes, which are spaced apart in the circumferential direction of the air inlet 11. In the air inlet direction of the air inlet 11, the multiple arc-shaped guide vanes move closer to the central axis of the air inlet 11.

[0105] The second air guide 50 is designed to be annular, so that it corresponds to the air inlet 11 and thus avoids obstructing the air inlet 11.

[0106] The second guide member 50 has ventilation holes (not shown) on its wall. Multiple ventilation holes can be provided, so that the second guide member 50 can increase airflow in multiple directions.

[0107] Furthermore, multiple arc-shaped guide vanes are spaced apart around the air inlet 11, which makes the airflow distribution into the air inlet 11 more uniform. Compared with a single-direction air intake design, this ensures a more uniform and stable airflow.

[0108] Furthermore, multiple arc-shaped guide vanes approach the central axis of the air inlet 11, which allows the airflow to flow along the central axis of the air inlet 11, thereby ensuring that the airflow accurately flows to the first guide member 30.

[0109] According to some embodiments of this utility model, such as Figure 3 As shown, the housing 10 includes an outer shell 101 and an inner shell 102. The inner shell 102 is disposed inside the outer shell 101. The outer shell 101 at least partially defines the air inlet 11. The second air guide 50 is integrally formed on the inner shell 102.

[0110] The outer shell 101 serves to protect the inner shell 102, thereby preventing damage to the inner shell 102 and its internal components when the diffuser 100 falls.

[0111] Furthermore, the housing 101 at least partially defines the air inlet 11, thereby preventing the housing 101 from obstructing the air inlet 11.

[0112] Furthermore, the second airflow guide 50 is integrally formed into the inner shell 102, which not only improves the strength of the diffuser 100, but also absorbs some of the vibration and noise caused by the airflow impact to a certain extent, further enhancing the noise reduction effect of the diffuser 100.

[0113] According to some embodiments of the present invention, the area of ​​the air inlet 11 is S1, and the minimum ventilation area between the outlets of the first guide member 30 and the second guide member 50 is S3. S1 and S3 satisfy the relationship: S3 > 0.5S1.

[0114] The minimum ventilation area S3 between the outlets of the first guide member 30 and the second guide member 50 is greater than half the area S1 of the air inlet 11. In this way, most of the airflow flowing into the air inlet 11 can pass through the outlets of the first guide member 30 and the second guide member 50, thereby avoiding obstruction of the airflow in the air inlet 11.

[0115] According to some embodiments of this utility model, such as Figure 3 As shown, the diffuser 100 also includes a third guide member 60. The air inlet 11 is annular. The third guide member 60 is disposed in the diffuser cavity 24 and is located inside the second guide member 50. In this way, the third guide member 60 can divide the airflow of the second guide member 50, thereby reducing the airflow velocity and noise.

[0116] Furthermore, a second guide channel 70 corresponding to the air inlet 11 is formed between the second guide member 50 and the third guide member 60. The airflow flowing into the air inlet 11 enters the second guide channel 70, which allows the airflow of the air inlet 11 to flow along the second guide channel 70.

[0117] In the air inlet 11, the cross-sectional area of ​​the second guide channel 70 first increases and then decreases. Since the airflow speed decreases as the cross-sectional area of ​​the second guide channel 70 increases and increases as the cross-sectional area of ​​the second guide channel 70 decreases, when the cross-sectional area of ​​the second guide channel 70 first increases, the airflow speed can be gradually reduced, thereby reducing noise.

[0118] When the cross-sectional area of ​​the second guide channel 70 decreases first, the air velocity exiting from the second guide channel 70 can be gradually increased.

[0119] Furthermore, the cross-sectional area of ​​the third guide member 60 first decreases and then increases. When the cross-sectional area of ​​the third guide member 60 first decreases, the airflow in the second guide channel 70 can be guided to the middle of the first guide member 30. When the cross-sectional area of ​​the third guide member 60 increases, the airflow can be diffused to the outer peripheral edge of the first guide member 30, thereby allowing the airflow to flow along a predetermined path.

[0120] Furthermore, the third guide element 60 is integrally formed with the first guide element 30. This allows for a smoother and more continuous airflow between the third guide element 60 and the first guide element 30, and also improves airflow efficiency.

[0121] Furthermore, the third airflow guide 60 is integrally formed with the first airflow guide 30, which can reduce noise caused by resonance between multiple components. Compared with a split design, the integral design can better absorb and buffer vibrations caused by airflow impact.

[0122] According to a second aspect embodiment of the present invention, a diffuser 100 includes: a housing 10 and an air outlet 20. The housing 10 is provided with an air inlet 11, the air outlet 20 is disposed on the housing 10, and the air outlet 20 is provided with an air outlet 25. The air outlet 20 and the housing 10 define a diffusion cavity 24 that connects the air inlet 11 and the air outlet 25. The air outlet 20 includes an air outlet surface 22 and an air outlet column 23. The air outlet column 23 is disposed on the air outlet surface 22. An air outlet hole 221 is provided on the air outlet surface 22. A noise reduction component 40 is attached to the side of the air outlet surface 22 facing the first guide member 30.

[0123] The diffuser 100 has a housing 10 connected to a hair dryer. The portion of the housing 10 connected to the hair dryer has an air inlet 11, allowing air from the hair dryer to enter through the inlet 11. An air outlet 20 is located within the housing 10, providing installation space for it. The air outlet 20 also has an air outlet 25, allowing air from the hair dryer to reach the hair through the outlet 25.

[0124] Furthermore, the air outlet 20 and the housing 10 define a diffuser cavity 24 that connects the air inlet 11 and the air outlet 25. The diffuser cavity 24 can guide the direction of airflow, in which the speed of the airflow decreases as the cross-section of the diffuser cavity 24 increases.

[0125] The air outlet column 23 is set on the air outlet surface 22. The air outlet column 23 can distribute the airflow more evenly. The air outlet surface 22 is provided with multiple air outlet holes 221, which can increase the number of air outlet positions and improve the air outlet efficiency.

[0126] Furthermore, a noise reduction component 40 is attached to the side of the air outlet 22 facing the first air guide 30. The noise reduction component 40 can easily absorb the noise and vibration generated between the first air guide 30 and the air outlet 20.

[0127] According to some embodiments of the present invention, corresponding to the position of the air outlet column 23, the noise reduction component 40 is provided with an avoidance opening 41, and the noise reduction component 40 is provided with an air passage hole 42, the cross-sectional area of ​​the air passage hole 42 being smaller than the cross-sectional area of ​​the air outlet hole 221.

[0128] The noise reduction component 40 is provided with an avoidance opening 41, which can avoid the noise reduction component 40 affecting the air outlet column 23. The air passage 42 corresponds to the air outlet 221, which can avoid blocking the air outlet 221. However, the cross-sectional area of ​​the air passage 42 is smaller than that of the air outlet 221, which can play a role in noise reduction and filtering.

[0129] According to some embodiments of the present invention, the diffuser 100 further includes: a first guide member 30, which is at least partially disposed in the diffuser cavity 24, and the first guide member 30 is located between the air inlet 11 and the air outlet 20. A first guide channel 21 is formed between the outer peripheral edge of the first guide member 30 and the housing 10, so that the airflow flowing to the first guide member 30 can be guided to the air outlet 20 through the first guide channel 21. Along the projection of the air inlet 11 in the air inlet direction, the first guide member 30 overlaps with or covers the air inlet 11.

[0130] The first guide member 30 is at least partially disposed within the diffusion cavity 24, thereby guiding the fluid within the diffusion cavity 24. Since the first guide member 30 is located between the air inlet 11 and the air outlet 20, the air from the air inlet 11 can be guided to the air outlet 25 through the first guide member 30.

[0131] Furthermore, a first guide channel 21 is formed between the outer peripheral edge of the first guide member 30 and the housing 10. A portion of the airflow from the air inlet 11 can be guided to the air outlet 20 through the first guide channel 21 and then flow out from the air outlet 25. This can divert the airflow flowing into the air inlet 11, thereby reducing the airflow velocity and thus reducing noise. Because the airflow flowing into the air inlet 11 is divided, the directionality of the fluid at the air outlet 25 is reduced, preventing the user's hair from being blown around.

[0132] The first air guide 30 overlaps with or covers the air inlet 11, which can increase the effective contact area with the airflow of the air inlet 11, thereby enabling a more uniform airflow distribution and reducing noise levels.

[0133] According to some embodiments of the present invention, the first guide member 30 includes: a first guide portion 31 and a second guide portion 32. The first guide portion 31 corresponds to the air inlet 11, and the second guide portion 32 is connected to the outer peripheral edge of the first guide portion 31. The second guide portion 32 is bent relative to the first guide portion 31 towards the air outlet 20. A first guide channel 21 is formed between the second guide portion 32 and the housing 10. The first guide portion 31 is recessed towards the air outlet 20. The first guide member 30 also includes: a plurality of guide strips 33. The plurality of guide strips 33 are disposed on the side of the first guide portion 31 facing the air inlet 11. The plurality of guide strips 33 are distributed in the circumferential direction of the first guide portion 31, and the plurality of guide strips 33 extend from the middle of the first guide portion 31 to the edge.

[0134] The first guide section 31 corresponds to the air inlet 11, and the airflow flowing into the air inlet 11 can flow to the air outlet 25 under the guidance of the first guide section 31.

[0135] Furthermore, the second guide section 32 is connected to the outer peripheral edge of the first guide section 31, so that the airflow flowing towards the first guide section 31 is slowed down and can flow towards the second guide section 32 to be slowed down again. Since the second guide section 32 is bent relative to the first guide section 31 towards the air outlet 20, it can help to better guide the airflow direction toward the air outlet 25, thereby ensuring that the airflow can flow along a predetermined path.

[0136] Furthermore, a first guide channel 21 is formed between the second guide section 32 and the housing 10, which allows the airflow flowing toward the first guide section 31 to flow from the first guide channel 21 to the air outlet 25, thereby diverting the airflow flowing toward the first guide section 31.

[0137] Multiple guide strips 33 are disposed on the side of the first guide section 31 facing the air inlet 11. The multiple guide strips 33 are distributed in a diffused manner. In this way, when the airflow flowing in from the air inlet 11 passes through the multiple guide strips 33, the multiple guide strips 33 can disperse the airflow to the surroundings through different shapes and angles.

[0138] According to some embodiments of the present invention, the middle part of the air outlet 20 is a plane, or the middle part of the air outlet 20 is a convex arc surface 80 protruding towards the first guide member 30, or the middle part of the air outlet 20 is a convex arc surface 80 protruding away from the first guide member 30.

[0139] The middle part of the air outlet 20 is flat, which facilitates the connection between the middle part of the air outlet 20 and the first guide 30, and also increases the contact area between the first guide 30 and the middle part of the air outlet 20, making the connection more stable.

[0140] Alternatively, the central structure of the air outlet 20 is a convex arc surface 80 protruding towards the first air guide 30. The convex arc surface 80 can form a groove. When the fluid flows out from the air outlet 25 of the air outlet 20, the fluid can circulate in the groove of the air outlet 25, which can make the airflow gentler, thereby preventing the user's hair from being blown away or scattered, but drying it and maintaining the original style, such as ensuring the curly effect.

[0141] Alternatively, the central structure of the air outlet 20 is a convex arc surface 80 protruding away from the first guide member 30. The convex arc surface 80 can form a groove. After passing through the first guide member 30, the fluid flows into the groove, circulates in the groove, and then flows out from the air outlet 25 of the air outlet 20, thereby making the airflow gentler and further improving the air outlet effect.

[0142] According to a third aspect embodiment of the present invention, a diffuser includes: a housing 10, an air outlet 20, a first flow guide 30, and a third flow guide 60. The housing 10 is provided with an air inlet 11, the air outlet 20 is disposed on the housing 10, and the air outlet 20 is provided with an air outlet 25. The air outlet 20 and the housing 10 define a diffusion cavity 24 that connects the air inlet 11 and the air outlet 25. The first flow guide 30 includes a first flow guide portion 31 and a second flow guide portion 32. The second flow guide portion 32 is connected to the outer peripheral edge of the first flow guide portion 31. In the air inlet direction of the air inlet 11, the cross-sectional area of ​​the third flow guide 60 first decreases and then increases.

[0143] The second guide section 32 is connected to the outer peripheral edge of the first guide section 31. This allows the airflow flowing towards the first guide section 31 to slow down, and then flow towards the second guide section 32 to slow down again. Since the second guide section 32 is bent relative to the first guide section 31 towards the air outlet 20, it helps to better guide the airflow towards the air outlet 25, thereby ensuring that the airflow can flow along a predetermined path.

[0144] Furthermore, the cross-sectional area of ​​the third guide member 60 first decreases and then increases. When the cross-sectional area of ​​the third guide member 60 first decreases, the airflow in the second guide channel 70 can be guided to the middle of the first guide member 30. When the cross-sectional area of ​​the third guide member 60 increases, the airflow can be diffused to the outer peripheral edge of the first guide member 30, thereby allowing the airflow to flow along a predetermined path.

[0145] The nursing device according to the fourth aspect of the present invention includes: a hair dryer and a diffuser 100 as described above, wherein the diffuser 100 is disposed on the hair dryer and the air inlet 11 is connected to the hair dryer.

[0146] The diffuser 100 is connected to the hair dryer, and the part of the diffuser 100 connected to the hair dryer is provided with an air inlet 11, which allows the air blown out by the hair dryer to enter the diffuser 100 through the air inlet 11.

[0147] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0148] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0149] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A diffuser, characterized in that, include: Housing (10), the housing (10) is provided with an air inlet (11); An air outlet (20) is disposed on the housing (10), and the air outlet (20) is provided with an air outlet (25). The air outlet (20) and the housing (10) define a diffuser cavity (24) that connects the air inlet (11) and the air outlet (25). The first guide member (30) is at least partially disposed in the diffuser cavity (24) and located between the air inlet (11) and the air outlet (20). A first guide channel (21) is formed between the outer peripheral edge of the first guide member (30) and the housing (10) to guide the airflow flowing to the first guide member (30) to the air outlet (20) through the first guide channel (21).

2. The diffuser according to claim 1, characterized in that, The first guide element (30) includes: The first guide section (31) corresponds to the air inlet (11). The second guide section (32) is connected to the outer peripheral edge of the first guide section (31) and is bent relative to the first guide section (31) towards the air outlet (20). The first guide channel (21) is formed between the second guide section (32) and the housing (10).

3. The diffuser according to claim 2, characterized in that, The first guide section (31) is configured to be recessed toward the air outlet (20).

4. The diffuser according to claim 2, characterized in that, The first flow guide (30) further includes: Multiple guide strips (33) are disposed on the side of the first guide section (31) facing the air inlet (11). The multiple guide strips (33) are distributed in the circumferential direction of the first guide section (31) and extend from the inside of the first guide section (31) to the edge.

5. The diffuser according to claim 4, characterized in that, The guide strip (33) is constructed in an arc shape in its extending direction; and / or The height of the guide strip (33) increases in the direction of extending towards the edge.

6. The diffuser according to claim 1, characterized in that, The maximum diameter of the air inlet (11) is d1, and the maximum diameter of the first guide (30) is d2. d1 and d2 satisfy the relationship: d2 > 1.3d1; and / or The area of ​​the air inlet (11) is S1, and the area of ​​the first guide (30) is S2. S1 and S2 satisfy the relationship: S2 > 3S1.

7. The diffuser according to claim 1, characterized in that, The first guide (30) is integrally formed on the air outlet (20), and the first guide (30) is located in the middle of the air outlet (20).

8. The diffuser according to claim 1, characterized in that, The central structure of the air outlet (20) is planar; or The central structure of the air outlet (20) is a convex arc surface (80) protruding towards the first air guide (30); or The central structure of the air outlet (20) is a convex arc surface (80) that protrudes away from the first air guide (30).

9. The diffuser according to claim 1, characterized in that, The air outlet component (20) includes an air outlet surface (22) and an air outlet column (23), the air outlet column (23) is disposed on the air outlet surface (22), and the air outlet surface (22) is provided with an air outlet hole (221); Among them, a noise reduction component (40) is attached to the side of the air outlet surface (22) facing the first air guide (30).

10. The diffuser according to claim 9, characterized in that, Corresponding to the position of the air outlet column (23), the noise reduction component (40) is provided with a clearance opening (41), and the noise reduction component (40) is provided with an air passage hole (42), the cross-sectional area of ​​the air passage hole (42) is smaller than the cross-sectional area of ​​the air outlet hole (221).

11. The diffuser according to claim 1, characterized in that, The first guide (30) overlaps with or covers the air inlet (11) when projected along the air inlet (11) direction.

12. The diffuser according to any one of claims 1-11, characterized in that, The diffuser also includes: The second guide (50) is at least partially disposed within the diffuser cavity (24) and located between the air inlet (11) and the first guide (30), and the second guide (50) is disposed around the air inlet (11).

13. The diffuser according to claim 12, characterized in that, The air inlet (11) is annular in shape. The outlet of the second guide (50) is located inside the air inlet (11) along the projection of the air inlet (11) in the direction of air intake.

14. The diffuser according to claim 12, characterized in that, In the air inlet (11) direction, the cross-sectional area of ​​the second guide (50) decreases.

15. The diffuser according to claim 12, characterized in that, The second guide (50) is annular in shape, and vent holes are provided on the wall of the second guide (50); or The second guide element (50) includes a plurality of arc-shaped guide vanes, which are spaced apart in the circumferential direction of the air inlet (11). In the air inlet direction of the air inlet (11), the plurality of arc-shaped guide vanes move closer to the central axis of the air inlet (11).

16. The diffuser according to claim 12, characterized in that, The housing (10) includes: The outer shell (101) and the inner shell (102) are disposed inside the outer shell (101), the outer shell (101) at least partially defining the air inlet (11), and the second air guide (50) is integrally formed on the inner shell (102).

17. The diffuser according to claim 12, characterized in that, The area of ​​the air inlet (11) is S1, and the minimum ventilation area between the outlets of the first guide (30) and the second guide (50) is S3. S1 and S3 satisfy the relationship: S3 > 0.5S1.

18. The diffuser according to claim 12, characterized in that, Also includes: The third guide (60) has an annular structure for the air inlet (11). The third guide (60) is disposed in the diffuser cavity (24) and located in the second guide (50). A second guide channel (70) corresponding to the air inlet (11) is formed between the second guide (50) and the third guide (60). In the air inlet (11) direction, the cross-sectional area of ​​the second guide channel (70) first increases and then decreases, the cross-sectional area of ​​the third guide (60) first decreases and then increases, and the third guide (60) is integrally formed on the first guide (30).

19. A diffuser, characterized in that, include: Housing (10), the housing (10) is provided with an air inlet (11); An air outlet (20) is disposed on the housing (10), and the air outlet (20) is provided with an air outlet (25). The air outlet (20) and the housing (10) define a diffuser cavity (24) that connects the air inlet (11) and the air outlet (25). The air outlet component (20) includes an air outlet surface (22) and an air outlet column (23). The air outlet column (23) is disposed on the air outlet surface (22). An air outlet hole (221) is provided on the air outlet surface (22). A noise reduction component (40) is attached to the side of the air outlet surface (22) facing the first guide component (30).

20. The diffuser according to claim 19, characterized in that, Corresponding to the position of the air outlet column (23), the noise reduction component (40) is provided with a clearance opening (41), and the noise reduction component (40) is provided with an air passage hole (42), the cross-sectional area of ​​the air passage hole (42) is smaller than the cross-sectional area of ​​the air outlet hole (221).

21. The diffuser according to claim 19, characterized in that, Also includes: The first guide member (30) is at least partially disposed in the diffuser cavity (24) and located between the air inlet (11) and the air outlet (20). A first guide channel (21) is formed between the outer peripheral edge of the first guide member (30) and the housing (10) to guide the airflow flowing to the first guide member (30) to the air outlet (20) through the first guide channel (21). The first guide (30) overlaps with or covers the air inlet (11) when projected along the air inlet (11) direction.

22. The diffuser according to claim 21, characterized in that, The first guide element (30) includes: The first guide section (31) corresponds to the air inlet (11). The second guide section (32) is connected to the outer peripheral edge of the first guide section (31) and is bent towards the air outlet (20) relative to the first guide section (31). The first guide channel (21) is formed between the second guide section (32) and the housing (10). The first guide section (31) is configured to be recessed toward the air outlet (20); The first flow guide (30) further includes: Multiple guide strips (33) are disposed on the side of the first guide section (31) facing the air inlet (11). The multiple guide strips (33) are distributed circumferentially in the first guide section (31) and extend from the middle of the first guide section (31) to the edge.

23. The diffuser according to claim 21, characterized in that, The central structure of the air outlet (20) is planar; or The central structure of the air outlet (20) is a convex arc surface (80) protruding towards the first air guide (30); or The central structure of the air outlet (20) is a convex arc surface (80) that protrudes away from the first air guide (30).

24. A diffuser, characterized in that, include: Housing (10), the housing (10) is provided with an air inlet (11); An air outlet (20) is disposed on the housing (10), and the air outlet (20) is provided with an air outlet (25). The air outlet (20) and the housing (10) define a diffuser cavity (24) that connects the air inlet (11) and the air outlet (25). The first guide member (30) includes a first guide portion (31) and a second guide portion (32), wherein the second guide portion (32) is connected to the outer peripheral edge of the first guide portion (31); The cross-sectional area of ​​the third guide (60) first decreases and then increases in the air inlet (11) direction.

25. A nursing appliance, characterized in that, include: Hair dryer; and The diffuser according to any one of claims 1-24, wherein the diffuser is disposed on the hair dryer, and the air inlet (11) is in communication with the hair dryer.

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