Diffuser and care appliance

Abstract

The utility model discloses a diffuser and nursing appliance, this diffuser includes: casing, and casing is provided with air inlet, air outlet piece, air outlet piece sets up in casing, and air outlet piece is provided with air outlet, and air outlet piece and casing limit the diffusion cavity of intercommunication air inlet and air outlet, flow guide piece, flow guide piece sets up in diffusion cavity, wherein, flow guide piece forms at least three annular flow channel in diffusion cavity, and at least three annular flow channel is spaced apart in the radial direction of flow guide piece. Therefore, at least three annular flow channel can divide high -speed airflow in the radial direction of flow guide piece, like this can reduce the flow rate of airflow. Moreover, at least three annular flow channel is evenly spaced apart in the radial direction of flow guide piece, can make airflow more uniform, and air outlet is more soft.

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 the existing technology, the airflow emitted by the diffuser attached to the hair dryer still has a high velocity, and the blown airflow is uneven. 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 in which the guide element forms at least three annular flow channels within the diffusion cavity. These at least three annular flow channels can divide the high-speed airflow radially in the guide element, thereby reducing the airflow velocity. Furthermore, the at least three annular flow channels are evenly spaced radially in the guide element, resulting in more uniform airflow and a gentler airflow.

[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 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; and a flow guide disposed within the diffusion cavity; wherein the flow guide forms at least three annular channels within the diffusion cavity, the at least three annular channels being spaced apart radially in the flow guide.

[0008] Therefore, the guide element in the diffuser forms at least three annular flow channels within the diffusion cavity. These at least three annular flow channels can divide the high-speed airflow radially, thereby reducing the airflow velocity. Furthermore, the uniform spacing of the at least three annular flow channels radially along the guide element results in more uniform airflow and a gentler exhaust.

[0009] According to some embodiments of the present invention, the at least three annular flow channels include: an outer annular flow channel, which is formed between the flow guide and the housing; and at least two inner annular flow channels, which are formed within the flow guide and are spaced apart from the outer annular flow channel in the radial direction of the flow guide.

[0010] According to some embodiments of the present invention, the flow guide includes: a central flow guide portion; at least two outer ring flow guide portions, wherein the central flow guide portion and the at least two outer ring flow guide portions are sequentially arranged in the radial direction of the flow guide, an outer annular flow channel is formed between the outermost outer ring flow guide portion and the housing, and an inner annular flow channel is formed between two adjacent outer ring flow guide portions and between the innermost outer ring flow guide portion and the central flow guide portion.

[0011] According to some embodiments of the present invention, the flow guide further includes: a plurality of first inner flow dividers, the plurality of first inner flow dividers being connected between two adjacent outer ring flow guides and spaced apart in the circumferential direction of the outer ring flow guides; and / or a plurality of second inner flow dividers, the plurality of second inner flow dividers being connected between the innermost outer ring flow guide and the central flow guide and spaced apart in the circumferential direction of the outer ring flow guide; and / or a plurality of outer flow dividers, the plurality of outer flow dividers being connected to the outermost outer ring flow guide and abutting against the housing, the plurality of outer flow dividers being spaced apart in the circumferential direction of the outer ring flow guide.

[0012] According to some embodiments of the present invention, one of the housing and the flow guide is provided with a plurality of interlocking ribs spaced apart along the circumference of the flow guide, and the other is provided with a plurality of interlocking slots spaced apart along the circumference of the flow guide, wherein the plurality of interlocking ribs and the plurality of interlocking slots are interlocked in a one-to-one correspondence; and / or one of the housing and the flow guide is provided with a buckle and the other is provided with a slot, wherein the buckle and the slot are engaged in a snap-fit ​​engagement; and / or one of the housing and the flow guide is provided with a positioning protrusion and the other is provided with a positioning groove, wherein the positioning protrusion is positioned in a positioning engagement with the positioning groove; and / or the housing includes an outer shell and an inner shell, wherein the outer shell surrounds the inner shell and forms a sealed cavity with the inner shell.

[0013] According to some embodiments of the present invention, the diffuser further includes: a bracket, the bracket being disposed on the housing and located at the air inlet, the bracket having a first mounting hole in the middle, and the air guide having a second mounting hole in the middle; and a fastener, the fastener passing through the first mounting hole and the second mounting hole to mount the air guide to the bracket.

[0014] According to some embodiments of the present invention, the bracket includes: a base plate, which is disposed on the housing and has a vent opposite to the air inlet; a connecting strip, which is connected to the base plate and located within the vent; and a mounting post, which is disposed in the middle of the connecting strip and has the first mounting hole.

[0015] According to some embodiments of the present invention, the bracket further includes a mounting groove protruding radially outward along the base plate, and a magnetic element is disposed in the mounting groove.

[0016] According to some embodiments of the present invention, the air outlet component includes: an air outlet grille disposed on the housing; a plurality of inner air outlet columns disposed on the side of the air outlet grille away from the guide member and spaced apart in the circumferential direction of the air outlet grille; and a plurality of outer air outlet columns disposed on the air outlet grille and spaced apart in the circumferential direction of the air outlet grille, the plurality of outer air outlet columns surrounding the outer side of the plurality of inner air outlet columns, and the air outlet grille, the inner air outlet columns, and the outer air outlet columns are all provided with air outlets; wherein, the air outlets of the inner air outlet columns face outwards, the air outlets of the outer air outlet columns face inwards, and the air outlets of the inner air outlet columns and the air outlets of the outer air outlet columns are at least partially staggered.

[0017] According to some embodiments of this utility model, the inner air outlet column is provided with at least two air outlets, both of which face outwards. The air outlet angle between the at least two air outlets is α, and α satisfies the relationship: 130°≤α≤170°.

[0018] According to some embodiments of the present invention, the central structure of the air outlet grille is a convex arc surface protruding in a direction away from the air guide.

[0019] According to some embodiments of the present invention, the diffuser further includes a noise reduction component, which fills the diffuser cavity and is located between the air guide and the air outlet.

[0020] According to some embodiments of this utility model, the noise reduction component is in contact with the air guide, the air outlet and the housing respectively, and the noise reduction component is one of steel wool, sponge and porous foam.

[0021] According to some embodiments of the present invention, the diffuser further includes: a flow divider, which is disposed in the diffusion cavity and located between the flow guide and the air outlet, the flow divider having a plurality of flow divider holes, and the flow divider being constructed as a curved surface recessed toward the direction of the air inlet.

[0022] A diffuser according to a second aspect 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; and a flow guide disposed within the diffusion cavity; wherein the diffuser further includes a noise reduction component filling the diffusion cavity and located between the flow guide and the air outlet.

[0023] According to some embodiments of the present invention, an outer annular flow channel is formed between the flow guide and the housing, and at least two inner annular flow channels are formed inside the flow guide and are spaced apart from the outer annular flow channel in the radial direction of the flow guide.

[0024] According to some embodiments of the present invention, the flow guide includes: a central flow guide portion; at least two outer ring flow guide portions, wherein the central flow guide portion and the at least two outer ring flow guide portions are sequentially arranged in the radial direction of the flow guide, an outer annular flow channel is formed between the outermost outer ring flow guide portion and the housing, and an inner annular flow channel is formed between two adjacent outer ring flow guide portions and between the innermost outer ring flow guide portion and the central flow guide portion.

[0025] According to some embodiments of this utility model, the noise reduction component is in contact with the air guide, the air outlet and the housing respectively, and the noise reduction component is one of steel wool, sponge and porous foam.

[0026] A nursing device according to a third 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.

[0027] 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

[0028] 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:

[0029] Figure 1 This is a schematic diagram of the structure of a diffuser according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the housing containing an air inlet according to an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the air outlet component separated from the housing according to this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the housing containing a flow guide element according to the present invention;

[0033] Figure 5 This is a schematic diagram of the structure in which an outer annular flow channel is formed between the flow guide and the housing according to an embodiment of the present utility model;

[0034] Figure 6 This is a schematic diagram of the flow guide component according to an embodiment of the present utility model;

[0035] Figure 7 This is an isometric view of the guide component according to an embodiment of the present utility model;

[0036] Figure 8 This is a structural schematic diagram of the bracket according to an embodiment of the present utility model;

[0037] Figure 9 This is a schematic diagram of a bracket containing mounting columns according to an embodiment of the present utility model;

[0038] Figure 10 This is a schematic diagram of the structure of the bracket containing the connecting strip according to an embodiment of the present utility model;

[0039] Figure 11 This is a schematic diagram of the bracket with a mounting groove according to an embodiment of the present utility model;

[0040] Figure 12 This is a structural schematic diagram of the air outlet angle between at least two air outlets according to an embodiment of the present utility model;

[0041] Figure 13 This is a schematic diagram of the flow guide with external flow dividers according to an embodiment of the present utility model.

[0042] Figure label:

[0043] 100. Diffuser;

[0044] 10. Housing; 11. Air inlet; 111. Outer shell; 112. Inner shell;

[0045] 20. Air outlet component; 21. Air outlet; 22. Air outlet grille; 221. Convex arc surface;

[0046] 23. Internal air outlet column; 24. External air outlet column;

[0047] 30. Diffuser cavity;

[0048] 40. Flow guide; 401. Central flow guide; 402. Outer ring flow guide; 403. First inner flow divider; 404. Second inner flow divider; 405. Outer flow divider;

[0049] 41. Annular flow channel; 411. Outer annular flow channel; 412. Inner annular flow channel; 42. Second mounting hole;

[0050] 50. Bracket; 51. First mounting hole; 52. Base plate; 521. Ventilation opening; 53. Mounting slot; 54. Fastener;

[0051] 60. Connecting strip; 70. Mounting column;

[0052] 80. Diverter; 81. Diverter hole. 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 1-13 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 flow guide 40. The housing 10 is provided with an air inlet 11. The air outlet 20 is disposed in the housing 10 and is provided with an air outlet 21. The air outlet 20 and the housing 10 define a diffusion cavity 30 that communicates the air inlet 11 and the air outlet 21. The flow guide 40 is disposed in the diffusion cavity 30, wherein the flow guide 40 forms at least three annular flow channels 41 in the diffusion cavity 30, and the at least three annular flow channels 41 are arranged at intervals in the radial direction of the flow guide 40.

[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 housing 10 includes an outer shell 111 and an inner shell 112, with the outer shell 111 surrounding the inner shell 112 and forming a sealed cavity with the inner shell 112.

[0058] The housing 10 may include an outer shell 111 and an inner shell 112, with the outer shell 111 surrounding the inner shell 112. The inner shell 112 is fixedly mounted on the 111, and a sealed cavity is formed between the two. The presence of the sealed cavity not only reduces heat transfer from the diffusion cavity 30 to the outer surface of the housing 10, but also reduces noise transmission from the diffusion cavity 30 to the outside.

[0059] 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 21, which allows the air blown by the hair dryer to be blown onto the hair through the air outlet 21.

[0060] Furthermore, the air outlet 20 and the housing 10 define a diffuser cavity 30 that connects the air inlet 11 and the air outlet 21. The diffuser cavity 30 can guide the direction of airflow, in which the speed of the airflow decreases as the cross-section of the diffuser cavity 30 increases.

[0061] Furthermore, the guide member 40 forms at least three annular flow channels 41 within the diffuser cavity 30. These at least three annular flow channels 41 can divide the high-speed airflow radially within the guide member 40, forming at least three flow paths. The airflow needs to flow along these at least three flow paths instead of flowing directly out of the guide member 40. This increases the actual flow path length of the airflow and reduces its velocity.

[0062] At least three annular flow channels 41 are evenly spaced in the radial direction of the guide member 40, which makes the airflow more uniform and the exhaust air more gentle. Furthermore, the high-speed airflow passing through the at least three annular flow channels 41 is evenly distributed to different areas of the diffuser cavity 30, which can ensure that the airflow is evenly distributed throughout the diffuser cavity 30 and can also avoid situations where the local flow velocity is too high or too low.

[0063] Furthermore, the multiple annular flow channels 41 can balance the fluid load at different radial locations, thereby preventing malfunctions or damage in certain areas due to excessive load. If one annular flow channel 41 becomes blocked or encounters other problems, the other flow channels can still continue to operate, thus providing additional safety assurance.

[0064] Therefore, the guide member 40 in the diffuser 100 forms at least three annular flow channels 41 within the diffusion cavity 30. These at least three annular flow channels 41 can divide the high-speed airflow in the radial direction of the guide member 40, thereby reducing the airflow velocity. Moreover, the at least three annular flow channels 41 are evenly spaced in the radial direction of the guide member 40, which makes the airflow more uniform and the exhaust air more gentle.

[0065] According to some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, at least three annular flow channels 41 include: an outer annular flow channel 411 and at least two inner annular flow channels 412. An outer annular flow channel 411 is formed between the flow guide 40 and the housing 10. At least two inner annular flow channels 412 are formed inside the flow guide 40, and the at least two inner annular flow channels 412 and the outer annular flow channel 411 are arranged at a distance from each other in the radial direction of the flow guide 40.

[0066] The guide member 40 and the housing 10 form an outer annular flow channel 411, which facilitates the contact between the airflow and the outer annular flow channel 411, increases the length of the actual flow path of the airflow, and thus reduces the flow velocity of the airflow.

[0067] Furthermore, at least two inner annular flow channels 412 are formed within the flow guide 40, which facilitates the airflow to contact with the at least two inner annular flow channels 412, further increasing the length of the actual flow path of the airflow, thereby further reducing the flow velocity of the airflow.

[0068] Furthermore, the fact that at least two inner annular channels 412 and outer annular channels 411 are arranged radially apart in the guide member 40 can prevent the airflow from the outer annular channel 411 from interfering with the airflow from the at least two inner annular channels 412, and can also prevent turbulence.

[0069] According to some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the flow guide 40 includes a central flow guide 401 and at least two outer ring flow guides 402. The central flow guide 401 and at least two outer ring flow guides 402 are arranged sequentially in the radial direction of the flow guide 40. An outer annular flow channel 411 is formed between the outermost outer ring flow guide 402 and the housing 10. Inner annular flow channels 412 are formed between two adjacent outer ring flow guides 402 and between the innermost outer ring flow guide 402 and the central flow guide 401, respectively.

[0070] The central guide section 401 and at least two outer ring guide sections 402 are sequentially arranged radially in the guide member 40. This allows airflow to flow into the inner annular flow channel 412 between the innermost outer ring guide section 402 and the central guide section 401, guided by the central guide section 401. Alternatively, airflow can flow into the inner annular flow channel 412 formed between two adjacent outer ring guide sections 402, guided by the at least two outer ring guide sections 402. This creates different flow paths, allowing for stratified fluid flow and reducing mutual interference between layers.

[0071] According to some embodiments of this utility model, such as Figure 6 As shown, the flow guide 40 also includes: a plurality of first inner flow dividers 403, a plurality of second inner flow dividers 404 and a plurality of outer flow dividers 405. The plurality of first inner flow dividers 403 are connected between two adjacent outer ring flow guides 402, so that the two outer ring flow guides 402 can be connected into a whole by the plurality of first inner flow dividers 403.

[0072] Furthermore, multiple first inner flow dividers 403 are distributed at intervals in the circumferential direction of the outer ring guide section 402. In this way, two adjacent outer ring guide sections 402 can be divided into multiple regions. When the high-speed airflow passes through the outer ring guide section 402, multiple flow paths can be formed, thereby reducing the flow velocity of the airflow between two adjacent outer ring guide sections 402 and uniformly distributing the high-speed airflow between two adjacent outer ring guide sections 402 to different regions of the diffuser cavity 30.

[0073] Furthermore, multiple second inner flow dividers 404 are connected between the innermost outer ring guide section 402 and the central guide section 401. In this way, the area between the innermost outer ring guide section 402 and the central guide section 401 can be divided into multiple regions. Thus, the high-speed airflow passing through the innermost outer ring guide section 402 and the central guide section 401 can form multiple flow paths, thereby further reducing the airflow velocity between the innermost outer ring guide section 402 and the central guide section 401. It can also evenly distribute the high-speed airflow between the innermost outer ring guide section 402 and the central guide section 401 to different regions of the diffuser cavity 30.

[0074] Furthermore, multiple second inner diverting ribs 404 are distributed at intervals in the circumferential direction of the outer ring guide section 402. The multiple second inner diverting ribs 404 can be evenly distributed at intervals in the circumferential direction of the outer ring guide section 402, which can make the airflow through the outer ring guide section 402 more uniform and the airflow more gentle.

[0075] Also, such as Figure 13 As shown, multiple outer diversion ribs 405 are connected to the outermost outer ring guide portion 402, which can divert the airflow in the outermost outer ring guide portion 402, thereby reducing the airflow velocity in the outermost outer ring guide portion 402. Furthermore, the multiple outer diversion ribs 405 abut against the inner shell 112, thereby ensuring the stability of the connection between the multiple outer diversion ribs 405 and the shell 10, and improving the structural strength of the diffuser 100. The outer diversion ribs 405 are evenly spaced in the circumferential direction; preferably, the number of outer diversion ribs 405 is six.

[0076] Multiple outer diversion ribs 405 are distributed at intervals in the circumferential direction of the outer ring guide section 402. The multiple outer diversion ribs 405 can be evenly distributed at intervals in the circumferential direction of the outermost outer ring guide section 402, so that the airflow passing through the outermost outer ring guide section 402 can be more uniform.

[0077] According to a specific embodiment of the present invention, one of the housing 10 and the flow guide 40 is provided with a plurality of interlocking ribs distributed circumferentially along the flow guide 40, and the other of the housing 10 and the flow guide 40 is provided with a plurality of interlocking slots distributed circumferentially along the flow guide 40, and the plurality of interlocking ribs and the plurality of interlocking slots are interlocked and engaged in a one-to-one correspondence.

[0078] Specifically, when the flow guide 40 is provided with spaced-apart insertion ribs in the circumferential direction (the insertion ribs can also be the outer diversion ribs 405 spaced-apart in the circumferential direction of the outer ring flow guide 402), correspondingly, the housing 10 is provided with a plurality of insertion slots spaced-apart along the circumferential direction of the flow guide 40, and the insertion ribs extend into the insertion slots, thereby realizing the insertion and engagement between the housing 10 and the flow guide 40.

[0079] According to another specific embodiment of the present invention, one of the housing 10 and the flow guide 40 is provided with a buckle, and the other of the housing 10 and the flow guide 40 is provided with a slot, and the buckle and the slot engage in a snap-fit ​​relationship.

[0080] When the flow guide 40 is provided with spaced buckles in the circumferential direction, the housing 10 is provided with a plurality of slots spaced in the circumferential direction of the flow guide 40. The buckles extend into the slots, thereby enabling the housing 10 and the flow guide 40 to engage.

[0081] According to another specific embodiment of the present invention, one of the housing 10 and the flow guide 40 is provided with a positioning protrusion, and the other of the housing 10 and the flow guide 40 is provided with a positioning groove, wherein the positioning protrusion and the positioning groove are positioned and engaged.

[0082] When the flow guide 40 is provided with spaced positioning protrusions in the circumferential direction, the housing 10 is provided with a plurality of positioning grooves spaced in the circumferential direction of the flow guide 40. The positioning protrusions extend into the positioning grooves, thereby enabling the housing 10 and the flow guide 40 to be positioned and engaged.

[0083] According to some embodiments of this utility model, such as Figure 5 and Figure 8 As shown, the diffuser 100 also includes a bracket 50 and a fastener 54. The bracket 50 is disposed on the housing 10 and is located at the air inlet 11. A first mounting hole 51 is provided in the middle of the bracket 50, and a second mounting hole 42 is provided in the middle of the guide member 40. The fastener 54 passes through the first mounting hole 51 and the second mounting hole 42, so that the guide member 40 can be mounted on the bracket 50.

[0084] The bracket 50 is disposed on the housing 10 and provides a mounting position for the air guide 40. The bracket 50 is located at the air inlet 11, which facilitates the installation of the air guide 40 at the air inlet 11, thereby guiding the airflow at the air inlet 11.

[0085] Furthermore, the bracket 50 has a first mounting hole 51 in the middle, and correspondingly, the guide 40 has a second mounting hole 42 in the middle. The fastener 54 can be a screw, which can pass through the first mounting hole 51 and the second mounting hole 42, so that the guide 40 and the bracket 50 can be installed more stably and firmly.

[0086] According to specific embodiments of this utility model, such as Figure 5 and Figure 11 As shown, the bracket 50 includes: a base plate 52, a connecting strip 60, and a mounting post 70. The base plate 52 is disposed on the housing 10, and the base plate 52 forms a vent 521 opposite to the air inlet 11. The connecting strip 60 is connected to the base plate 52, and the connecting strip 60 is located inside the vent 521. The mounting post 70 is disposed in the middle of the connecting strip 60, and the mounting post 70 is provided with a first mounting hole 51.

[0087] The seat plate 52 is disposed on the housing 10 and provides support for the housing 10. The seat plate 52 has a vent 521 opposite to the air inlet 11, which allows the airflow of the air inlet 11 to pass through the vent 521, thereby avoiding obstruction of the airflow of the air inlet 11.

[0088] Furthermore, the connecting strip 60 is connected to the base plate 52. Multiple connecting strips 60 can be provided to form a cross frame in the middle of the bracket 50, which can provide sufficient structural strength and prevent deformation at the air inlet 11.

[0089] Furthermore, the connecting strip 60 is located inside the vent 521, which can also divert the airflow of the vent 521, thereby changing the airflow distribution at the vent 521.

[0090] Furthermore, the mounting post 70 is located in the middle of the connecting strip 60, which can serve to position the guide member 40 during installation, facilitate the installation of the guide member 40, and prevent the guide member 40 from shifting during installation. In addition, the mounting post 70 is provided with a first mounting hole 51, which facilitates the insertion of the fastener 54, thereby facilitating the fixed installation of the guide member 40 and the bracket 50.

[0091] According to some embodiments of this utility model, such as Figure 11 As shown, the bracket 50 also includes a mounting groove 53 that protrudes radially outward along the base plate 52, and a magnetic element is disposed in the mounting groove 53.

[0092] The mounting slot 53 provides a mounting position for the magnetic component and also serves as a positioning device. For example, the magnetic component can be a magnet, which works in conjunction with a Hall sensor on the hair dryer. Based on information such as the number, position, and magnetic force of the magnets, the hair dryer can identify the diffuser 100 and then adaptively use the mode of the diffuser 100.

[0093] According to some embodiments of this utility model, such as Figure 1As shown, the air outlet component 20 includes: an air outlet grille 22, multiple inner air outlet columns 23 and multiple outer air outlet columns 24. The air outlet grille 22 is disposed on the housing 10, and the multiple inner air outlet columns 23 are disposed on the side of the air outlet grille 22 away from the guide component 40. In this way, the airflow direction can be further guided, making the airflow more concentrated and stable, thereby improving the airflow transmission efficiency.

[0094] Furthermore, multiple internal air outlet columns 23 are spaced apart around the air outlet grille 22. The multiple internal air outlet columns 23 can distribute the airflow in the central area of ​​the air outlet grille 22 more evenly, ensuring that the air coming out of the blower can diffuse evenly in the central area of ​​the air outlet grille 22, thereby avoiding the problem of excessively strong or weak local airflow.

[0095] Furthermore, multiple outgoing air columns 24 are disposed on the air outlet grille 22, and the multiple outgoing air columns 24 are distributed at intervals in the circumference of the air outlet grille 22. The multiple outgoing air columns 24 surround the outside of the multiple inner air outlet columns 23. The multiple outgoing air columns 24 can distribute the airflow away from the center area of ​​the air outlet grille 22 more evenly, which can ensure that the air coming out of the blower can be evenly diffused in the area away from the center area of ​​the air outlet grille 22, thereby avoiding the problem of excessively strong or weak local airflow.

[0096] Furthermore, the air outlet grille 22, the inner air outlet column 23, and the outer air outlet column 24 are all provided with air outlets 21, which can increase the number and position of air outlets 21, thereby increasing the air outlet range.

[0097] Among them, the air outlet 21 of the inner air outlet column 23 faces outward, which can expand the outward air outlet range, while the air outlet 21 of the outer air outlet column 24 faces inward, which can concentrate the air outlet 21 of the inner air outlet column 23, thereby improving the air outlet effect.

[0098] Furthermore, the air outlets 21 of the inner air outlet column 23 and the air outlets 21 of the outer air outlet column 24 are at least partially staggered, thereby avoiding interference between the air outlets of the inner air outlet column 23 and the outer air outlet column 24, which would cause turbulence.

[0099] According to some embodiments of this utility model, such as Figure 12 As shown, the inner air outlet column 23 is provided with at least two air outlets 21, and both inner air outlet columns 23 are oriented outwards. The air outlet angle between the at least two air outlets 21 is α, which satisfies the relationship: 130°≤α≤170°. Preferably, α is 150°. In this case, the air outlet of the inner air outlet column 23 can at least partially form convection with the air outlet of the outer air outlet column 24, reducing the kinetic energy of the airflow blown out from the air outlets 21, making the airflow acting on the user's hair gentler, thereby preventing the high-speed airflow from messing up the user's hair.

[0100] The inner air outlet column 23 is equipped with multiple air outlets 21 that point outwards, allowing airflow to be ejected from multiple directions simultaneously, thus more evenly covering the entire air outlet grille 22 area. This prevents airflow from concentrating in a specific area.

[0101] Furthermore, the two air outlets 21 are V-shaped and face outwards. If the air outlet angle α between the two air outlets 21 is less than 130°, it will result in a smaller air outlet range and the airflow will be more concentrated in a specific area. Therefore, the air outlet angle α between the two air outlets 21 is set to be no less than 130°.

[0102] If the air outlet angle α between the two air outlets 21 is greater than 170°, the airflow will be too diffused, reducing the air outlet effect. Therefore, the air outlet angle α between the two air outlets 21 should not be greater than 170°.

[0103] Furthermore, the air outlet angle between at least two air outlets 21 can be set to 140°≤α≤160°.

[0104] When the air outlet angle between at least two air outlets 21 is 140°, the air outlet of the inner air outlet column 23 can form at least part of the air outlet of the outer air outlet column 24 to form convection, which can reduce the kinetic energy of the airflow blown out from the air outlet 21 and make the wind acting on the user's hair more gentle.

[0105] When the air outlet angle between at least two air outlets 21 is 160°, the air outlet of the inner air outlet column 23 can form at least part of the convection with the air outlet of the outer air outlet column 24, which can further reduce the kinetic energy of the airflow blown out from the air outlet 21, making the wind acting on the user's hair more gentle.

[0106] According to some embodiments of this utility model, such as Figure 3 As shown, the central structure of the air outlet grille 22 is a convex arc surface 221 that protrudes in the direction away from the air guide 40.

[0107] The convex arc surface 221 can guide the airflow to flow in a specific direction. In particular, with the cooperation of the inner air outlet column 23 and the outer air outlet column 24, the direction of the airflow can be better controlled, thereby ensuring that the airflow is more concentrated and stable.

[0108] According to some embodiments of the present invention, the diffuser 100 further includes a noise reduction component, which is filled in the diffusion cavity 30 and is located between the air guide 40 and the air outlet 20.

[0109] The noise reduction component is filled inside the diffuser cavity 30, which can reduce the noise of the diffuser cavity 30. Specifically, the noise reduction component is located between the guide component 40 and the air outlet component 20, which can effectively absorb the noise transmitted from the guide component 40 to the air outlet component 20, and can also significantly reduce the turbulence noise and other mechanical noise generated by high-speed airflow.

[0110] Furthermore, the noise reduction component can also act as a buffer, reducing the transmission of mechanical vibration between the air guide 40 and the air outlet 20, thereby further reducing the noise level.

[0111] According to some embodiments of this utility model, the noise reduction component abuts against the air guide 40, the air outlet 20, and the housing 10, respectively. The noise reduction component is one of steel wool, sponge, and porous foam. Preferably, the noise reduction component completely fills the blank area between the air guide 40, the air outlet 20, and the housing 10.

[0112] The noise reduction component is in contact with the air guide 40, the air outlet 20 and the housing 10 respectively, which can facilitate the absorption of noise and vibration generated between the air guide 40, the air outlet 20 and the housing 10.

[0113] Furthermore, when the noise reduction component is made of steel wool, the fine gaps in the steel wool can maximize the refinement and uniformity of airflow, thereby reducing noise and providing a gentle airflow. The fine steel wool also helps prevent uneven airflow.

[0114] When the noise reduction component is made of sponge, since 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.

[0115] When the noise reduction component is made of 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.

[0116] According to some embodiments of this utility model, such as Figure 3 As shown, the diffuser 100 also includes a flow divider 80, which is disposed in the diffuser cavity 30 and located between the flow guide 40 and the air outlet 20. The flow divider 80 is provided with a plurality of flow divider holes 81 and is constructed as a curved surface that is recessed toward the direction of the flow guide 40.

[0117] The multiple diversion holes 81 on the diverter 80 can divide the high-speed airflow from the guide 40 into multiple smaller airflows, allowing the airflow to be more evenly distributed throughout the air outlet grille 22 area. The concave curved surface design of the diverter 80 helps guide the airflow towards the direction closer to the guide 40.

[0118] According to a second aspect embodiment of the present invention, a diffuser 100 includes: a housing 10, an air outlet 20, and a flow guide 40. 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 21. The air outlet 20 and the housing 10 define a diffusion cavity 30 that communicates the air inlet 11 and the air outlet 21. The flow guide 40 is disposed in the diffusion cavity 30. The diffuser 100 also includes a noise reduction component, which fills the diffusion cavity 30 and is located between the flow guide 40 and the air outlet 20.

[0119] 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 21, allowing air from the hair dryer to reach the hair through the outlet 21.

[0120] The guide element 40 is disposed within the diffuser cavity 30 and can guide the airflow in the diffuser cavity 30. The noise reduction element is filled within the diffuser cavity 30 and is located between the guide element 40 and the air outlet 20. It can effectively absorb the noise transmitted from the guide element 40 to the air outlet 20 and can also significantly reduce the turbulence noise and other mechanical noise generated by the high-speed airflow.

[0121] According to some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, an outer annular flow channel 411 is formed between the flow guide 40 and the housing 10, and at least two inner annular flow channels 412 are formed inside the flow guide 40. Moreover, the at least two inner annular flow channels 412 and the outer annular flow channels 411 are arranged at a distance from each other in the radial direction of the flow guide 40.

[0122] An outer annular flow channel 411 is formed between the flow guide 40 and the housing 10, which facilitates the flow of air out of the outer annular flow channel 411. At least two inner annular flow channels 412 are formed inside the flow guide 40, which facilitates the flow of air out of the at least two inner annular flow channels 412.

[0123] Furthermore, the fact that at least two inner annular channels 412 and outer annular channels 411 are arranged radially apart in the guide member 40 can prevent the airflow from the outer annular channel 411 from interfering with the airflow from the at least two inner annular channels 412, and can also prevent turbulence.

[0124] According to some embodiments of this utility model, such as Figure 6As shown, the flow guide 40 includes a central flow guide 401 and at least two outer ring flow guides 402. The central flow guide 401 and at least two outer ring flow guides 402 are arranged sequentially in the radial direction of the flow guide 40. An outer annular flow channel 411 is formed between the outermost outer ring flow guide 402 and the housing 10. Inner annular flow channels 412 are formed between two adjacent outer ring flow guides 402 and between the innermost outer ring flow guide 402 and the central flow guide 401, respectively.

[0125] The central guide section 401 and at least two outer ring guide sections 402 are sequentially arranged radially in the guide member 40. This allows airflow to flow into the inner annular flow channel 412 between the innermost outer ring guide section 402 and the central guide section 401, guided by the central guide section 401. Alternatively, airflow can flow into the inner annular flow channel 412 formed between two adjacent outer ring guide sections 402, guided by the at least two outer ring guide sections 402. This creates different flow paths, allowing for stratified fluid flow and reducing mutual interference between layers.

[0126] According to some embodiments of the present invention, the noise reduction component abuts against the air guide 40, the air outlet 20 and the housing 10 respectively, and the noise reduction component is one of steel wool, sponge and porous foam.

[0127] The noise reduction component is in contact with the air guide 40, the air outlet 20 and the housing 10 respectively, which can facilitate the absorption of noise and vibration generated between the air guide 40, the air outlet 20 and the housing 10.

[0128] Furthermore, when the noise reduction component is made of steel wool, the fine gaps in the steel wool can maximize the refinement and uniformity of airflow, thereby reducing noise and providing a gentle airflow. The fine steel wool also helps prevent uneven airflow.

[0129] When the noise reduction component is made of sponge, since 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.

[0130] When the noise reduction component is made of 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.

[0131] The nursing device according to the third 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.

[0132] The diffuser 100 housing 10 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.

[0133] 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.

[0134] 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.

[0135] 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 (21). The air outlet (20) and the housing (10) define a diffuser cavity (30) that connects the air inlet (11) and the air outlet (21). A flow guide (40) is disposed within the diffusion cavity (30); The guide member (40) forms at least three annular channels (41) in the diffusion cavity (30), and the at least three annular channels (41) are arranged at intervals in the radial direction of the guide member (40).

2. The diffuser according to claim 1, characterized in that, The at least three annular channels (41) include: An outer annular flow channel (411) is formed between the flow guide (40) and the housing (10). At least two inner annular flow channels (412) are formed within the flow guide (40) and are radially spaced from the outer annular flow channel (411) of the flow guide (40).

3. The diffuser according to claim 2, characterized in that, The flow guide (40) includes: Central flow guide (401); At least two outer ring guide portions (402) are arranged sequentially in the radial direction of the guide member (40), the central guide portion (401) and the at least two outer ring guide portions (402) are arranged sequentially, the outer ring flow channel (411) is formed between the outermost outer ring guide portion (402) and the housing (10), and the inner ring flow channel (412) is formed between two adjacent outer ring guide portions (402) and between the innermost outer ring guide portion (402) and the central guide portion (401).

4. The diffuser according to claim 3, characterized in that, The flow guide (40) also includes: A plurality of first inner diversion ribs (403) are connected between two adjacent outer ring guide portions (402) and are distributed at intervals in the circumferential direction of the outer ring guide portions (402); and / or A plurality of second inner diverter ribs (404) are connected between the innermost outer ring guide portion (402) and the central guide portion (401) and are spaced apart circumferentially on the outer ring guide portion (402); and / or Multiple outer diversion ribs (405) are connected to the outermost outer ring guide portion (402) and abut against the housing (10). The multiple outer diversion ribs (405) are distributed at intervals in the circumferential direction of the outer ring guide portion (402).

5. The diffuser according to any one of claims 1 to 4, characterized in that, One of the housing (10) and the flow guide (40) is provided with a plurality of interlocking ribs spaced apart circumferentially along the flow guide (40), and the other is provided with a plurality of interlocking slots spaced apart circumferentially along the flow guide (40), wherein the plurality of interlocking ribs and the plurality of interlocking slots are interlocked in a one-to-one correspondence; and / or One of the housing (10) and the guide member (40) is provided with a buckle and the other is provided with a slot, the buckle engaging with the slot; and / or One of the housing (10) and the guide member (40) is provided with a positioning protrusion and the other is provided with a positioning groove, the positioning protrusion and the positioning groove being positioned and engaged; and / or The housing (10) includes an outer shell (111) and an inner shell (112), the outer shell (111) surrounding the inner shell (112) and forming a sealed cavity with the inner shell (112).

6. The diffuser according to any one of claims 1 to 4, characterized in that, The diffuser also includes: The bracket (50) is disposed on the housing (10) and located at the air inlet (11). The bracket (50) has a first mounting hole (51) in the middle and the guide (40) has a second mounting hole (42) in the middle. Fastener (54) passes through the first mounting hole (51) and the second mounting hole (42) to mount the guide (40) to the bracket (50).

7. The diffuser according to claim 6, characterized in that, The support (50) includes: Seat plate (52), the seat plate (52) is disposed on the housing (10) and has a vent (521) opposite to the air inlet (11). A connecting strip (60) is connected to the seat plate (52) and located inside the vent (521); Mounting post (70), which is located in the middle of the connecting strip (60) and has the first mounting hole (51).

8. The diffuser according to claim 7, characterized in that, The bracket (50) also includes a mounting groove (53) that protrudes radially outward along the seat plate (52), and a magnetic element is provided in the mounting groove (53).

9. The diffuser according to any one of claims 1 to 4, characterized in that, The air outlet component (20) includes: Air outlet grille (22), the air outlet grille (22) is disposed on the housing (10); Multiple internal air outlet columns (23) are disposed on the side of the air outlet grille (22) away from the guide member (40) and are spaced apart in the circumferential direction of the air outlet grille (22); Multiple outgoing air columns (24) are provided on the air outlet grille (22) and distributed at intervals in the circumferential direction of the air outlet grille (22). The multiple outgoing air columns (24) surround the outside of the multiple inner air outlet columns (23). The air outlet grille (22), the inner air outlet columns (23) and the outgoing air columns (24) are all provided with air outlets (21). The air outlet (21) of the inner air outlet column (23) is directed to the outside, and the air outlet (21) of the outer air outlet column (24) is directed to the inside. The air outlet (21) of the inner air outlet column (23) and the air outlet (21) of the outer air outlet column (24) are at least partially staggered.

10. The diffuser according to claim 9, characterized in that, The inner air outlet column (23) is provided with at least two air outlets (21) and both of them are venting air outward. The air outlet angle between the at least two air outlets (21) is α, and α satisfies the relationship: 130°≤α≤170°.

11. The diffuser according to claim 9, characterized in that, The central structure of the air outlet grille (22) is a convex arc surface (221) that protrudes in a direction away from the air guide (40).

12. The diffuser according to claim 1, characterized in that, The diffuser also includes: A noise reduction component, which fills the diffuser cavity (30) and is located between the air guide (40) and the air outlet (20).

13. The diffuser according to claim 12, characterized in that, The noise reduction component abuts against the air guide (40), the air outlet (20), and the housing (10), respectively; The noise reduction component is one of steel wool, sponge, and porous foam.

14. The diffuser according to any one of claims 1 to 4, characterized in that, The diffuser also includes: The diverter (80) is disposed in the diffuser cavity (30) and located between the guide (40) and the air outlet (20). The diverter (80) is provided with a plurality of diverting holes (81). The diverter (80) is constructed as a curved surface that is recessed toward the air inlet (11).

15. 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 (21). The air outlet (20) and the housing (10) define a diffuser cavity (30) that connects the air inlet (11) and the air outlet (21). A flow guide (40) is disposed within the diffusion cavity (30); The diffuser further includes a noise reduction component, which fills the diffuser cavity (30) and is located between the air guide (40) and the air outlet (20).

16. The diffuser according to claim 15, characterized in that, An outer annular flow channel (411) is formed between the flow guide (40) and the housing (10), and at least two inner annular flow channels (412) are formed inside the flow guide (40) and are arranged radially spaced from the outer annular flow channel (411) in the flow guide (40).

17. The diffuser according to claim 16, characterized in that, The flow guide (40) includes: Central flow guide (401); At least two outer ring guide portions (402) are arranged sequentially in the radial direction of the guide member (40), the central guide portion (401) and the at least two outer ring guide portions (402) are arranged sequentially, the outer ring flow channel (411) is formed between the outermost outer ring guide portion (402) and the housing (10), and the inner ring flow channel (412) is formed between two adjacent outer ring guide portions (402) and between the innermost outer ring guide portion (402) and the central guide portion (401).

18. The diffuser according to claim 15, characterized in that, The noise reduction component is in contact with the air guide (40), the air outlet (20) and the housing (10) respectively. The noise reduction component is one of steel wool, sponge and porous foam.

19. A nursing appliance, characterized in that, include: Hair dryer; and The diffuser according to any one of claims 1-18, 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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