Air outlet assembly and air outlet device

Abstract

The embodiment of the utility model relates to the technical field of electric appliances, and discloses an air outlet assembly and an air outlet device.The air outlet assembly comprises a draught fan part and a noise reduction shell, the draught fan part comprises a shell, a power part and fan blades, the power part and the fan blades are assembled on the shell, a rotating shaft of the power part is connected with the fan blades, and the two opposite ends of the shell are provided with a first air inlet and a first air outlet respectively; the power piece drives the fan blades to rotate to generate airflow, and the airflow flows to the first air outlet from the first air inlet. The noise reduction shell is arranged on the periphery of the shell in a sleeving mode, and a plurality of noise reduction holes are annularly formed in the circumferential side of the noise reduction shell. Through the mode, the noise reduction shell provided by the embodiment of the utility model can reduce the intensity of various noises generated when the fan component is in a working state, and the use comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to an air outlet component and an air outlet device. Background Technology

[0002] Air outlet devices typically use centrifugal fans or high-speed fans to generate airflow, which is then directed toward the human body to cool it down.

[0003] However, centrifugal fans or high-speed fans have the problem of being noisy. In particular, the high-frequency noise of high-speed fans is quite harsh, and the noise is also loud when the air volume is large, resulting in poor comfort and affecting the user experience. Utility Model Content

[0004] In view of the above problems, this utility model provides an air outlet component and an air outlet device to solve the above technical problems.

[0005] According to one aspect of the present invention, an air outlet assembly is provided, the air outlet assembly including a fan component and a noise reduction housing.

[0006] The fan component includes a housing and a power component and a fan blade assembled in the housing. The rotating shaft of the power component is connected to the fan blade. The housing has a first air inlet and a first air outlet at opposite ends. The power component drives the fan blade to rotate to generate airflow. The airflow flows from the first air inlet to the first air outlet.

[0007] The noise reduction shell is fitted around the outer periphery of the housing, and the periphery of the noise reduction shell is provided with a plurality of noise reduction holes.

[0008] In one alternative approach, the noise-reducing shell is interference-fitted with the housing.

[0009] In one alternative embodiment, the air outlet assembly further includes a horn, one end of which is connected to the end of the noise-reducing housing near the first air inlet, and the opening of the horn gradually increases from the end near the first air inlet to the other end.

[0010] In one alternative embodiment, the inner wall of the horn component smoothly transitions to the inner wall of the housing.

[0011] In one alternative embodiment, the fan blades are located on one side of the first air outlet, and the power unit is located on one side of the first air inlet and extends at least partially outside the housing.

[0012] The noise reduction housing is extended at one end near the first air outlet, and the power component is located inside the noise reduction housing.

[0013] The periphery of the extended portion of the noise-reducing shell is also provided with a plurality of noise-reducing holes.

[0014] In one optional embodiment, the outer surface of the noise-reducing housing and the inner wall of the noise-reducing hole are further provided with a damping layer, the damping layer absorbing part of the sound waves generated when the air outlet assembly is in operation; and / or,

[0015] The outer surface of the noise-reducing shell is fitted with a sound-absorbing component, which covers the noise-reducing hole.

[0016] In one alternative approach, the diameter of the noise reduction aperture is less than or equal to 0.7 mm, and the center distance between two adjacent noise reduction apertures is less than or equal to 1 mm.

[0017] According to another aspect of the present invention, an air outlet device is provided, the air outlet device including a bracket and the above-described air outlet component, the air outlet component being assembled on the bracket.

[0018] In one alternative embodiment, the air outlet assembly is assembled inside the bracket, and the bracket is provided with a second air inlet and a second air outlet;

[0019] The first air inlet is connected to the second air inlet, and the first air outlet is connected to the second air outlet. The fan blades rotate to generate airflow that flows from the first air inlet to the first air outlet and is blown out from the second air outlet.

[0020] In one alternative embodiment, the bracket includes an end portion and a side portion, the end portion being connected to the side portion, a second air inlet being disposed at the end portion, and the side portion having a plurality of air inlet holes near the first air inlet.

[0021] The air outlet assembly of this utility model embodiment includes a fan component and a noise reduction shell. The fan blades of the fan component rotate to generate high-speed airflow. The shell can effectively guide the high-speed airflow, and all the generated high-speed airflow flows from the first air inlet to the first air outlet, resulting in a large air volume and high speed at the first air outlet. At the same time, the noise reduction shell is sleeved on the outer periphery of the shell. The noise reduction holes on the noise reduction shell can interact with various sound waves generated by the air outlet assembly in the working state, so as to attenuate the sound wave energy, thereby reducing the noise intensity and improving the comfort of use. Based on the same air volume and / or air speed as other air outlet devices, the air outlet assembly of this utility model embodiment has lower noise, or, based on the same noise, the air volume and / or air speed of the air outlet assembly of this embodiment is greater.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 A perspective view of an embodiment of the air outlet component of this utility model is shown.

[0025] Figure 2 This diagram shows a disassembled structural schematic of an embodiment of the air outlet assembly of this utility model;

[0026] Figure 3 A perspective view of a sound-absorbing element fitted onto the outer surface of the noise-reducing shell of an embodiment of the air outlet assembly of this utility model is shown;

[0027] Figure 4 A perspective view of an embodiment of the air outlet device of this utility model is shown.

[0028] Figure 5 This diagram shows a schematic representation of the air outlet device of the present invention after removing part of the support frame.

[0029] Figure 6 A cross-sectional view of an embodiment of the air outlet device of this utility model is shown.

[0030] The reference numerals in the detailed embodiments are as follows:

[0031] Air outlet assembly 100, fan component 1, noise reduction shell 2, housing 11, power component 12, fan blade 13, first air inlet 111, first air outlet 112, noise reduction hole 21, horn component 3, sound absorption component 4, bracket 5, second air inlet 51, second air outlet 52, air inlet hole 53, end 54, side 55. Detailed Implementation

[0032] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0033] See Figures 1 to 3 The present invention provides an air outlet assembly 100, which includes a fan component 1 and a noise reduction shell 2. The fan component 1 is used to generate and guide high-speed airflow, and the noise reduction shell 2 is used to reduce the noise generated by the fan component 1, thereby reducing the noise of the air outlet assembly 100.

[0034] The fan component 1 includes a housing 11, a power component 12, and a fan blade 13 mounted on the housing 11. The shaft of the power component 12 is connected to the fan blade 13, and the power component 12 can be a motor. The housing 11 has a first air inlet 111 and a first air outlet 112 at opposite ends. When the fan component 1 is in operation, the power component 12 provides power, driving the fan blade 13 to rotate via the shaft, generating a high-speed airflow. This high-speed airflow flows within the housing 11, from the first air inlet 111 to the first air outlet 112. In this embodiment, due to the restriction of the housing 11, the high-speed airflow can only flow within the housing 11. The housing 11 effectively guides the high-speed airflow, ensuring that all the generated high-speed airflow flows from the first air inlet 111 to the first air outlet 112, resulting in a large air volume and high speed at the first air outlet 112.

[0035] The noise-reducing shell 2 is fitted around the outer periphery of the housing 11, and the periphery of the noise-reducing shell 2 is provided with multiple noise-reducing holes 21. The power component 12 generates mechanical vibration sound waves when vibrating and the fan blade 13 rotates. The high-speed airflow generated by the rotation of the fan blade 13 also generates aerodynamic sound waves. Of course, the fan component 1 also generates other noises during operation, such as mechanical noise between mechanical parts and eddy current noise, etc., which are not listed here. The sum of these noises forms the noise of the air outlet assembly 100. In this embodiment, the noise-reducing shell 2 is fitted around the outer periphery of the housing 11, and the periphery of the noise-reducing shell 2 is provided with multiple noise-reducing holes 21. When the sound waves of the noise from the air outlet assembly 100 pass through these noise-reducing holes 21, the sound waves interact with the hole walls of the noise-reducing holes 21, such as by reflection or refraction, causing the sound wave energy to attenuate, thereby reducing the noise intensity and achieving a noise reduction effect.

[0036] In some embodiments, the number of noise reduction holes 21 can be increased. The more noise reduction holes 21 there are per unit area, the lower the noise intensity will be. The aperture of the noise reduction holes 21 can be set to be smaller, which can reduce the noise intensity, especially high-frequency noise, and prevent sound waves from propagating out without interacting with the hole wall. Preferably, the diameter of the noise reduction holes 21 is less than or equal to 0.7 mm, and the center distance between two adjacent noise reduction holes 21 is less than or equal to 1 mm.

[0037] The air outlet assembly 100 of this embodiment includes a fan component 1 and a noise reduction housing 2. The fan blades 13 of the fan component 1 rotate to generate high-speed airflow. The housing 11 can effectively guide the high-speed airflow. All the generated high-speed airflow flows from the first air inlet 111 to the first air outlet 112, resulting in a large air volume and high speed at the first air outlet 112. At the same time, the noise reduction housing 2 is fitted around the outer periphery of the housing 11. The noise reduction holes 21 can reduce the intensity of various noises generated by the fan component 1 during operation, improving user comfort. Based on the same air volume and / or air velocity as other air outlet devices, the air outlet assembly 100 of this embodiment has lower noise, or, based on the same noise, the air volume and / or air velocity of the air outlet assembly 100 of this embodiment is greater.

[0038] In some embodiments, the noise-reducing shell 2 is interference-fitted with the shell 11, allowing the noise-reducing shell 2 to fit snugly against the shell 11. This allows sound waves to act directly on the parts of the noise-reducing shell 2 other than the noise-reducing holes 21, such as through reflection, causing sound wave energy attenuation and thus reducing noise intensity. Simultaneously, the interference fit between the noise-reducing shell 2 and the shell 11 also acts on the vibration waves generated by the fan component 1, providing a vibration damping effect.

[0039] In some embodiments, the air outlet assembly 100 further includes a horn 3, one end of which is connected to the end of the noise-reducing housing 2 near the first air inlet 111. The opening of the horn 3 gradually increases in size from the end near the first air inlet 111 to the other end. In this embodiment, the airflow enters the first air inlet 111 of the housing 11 from the end with the larger opening of the horn 3. A portion of the airflow flows in from the side corresponding to the inner wall of the horn opening. This portion of the airflow does not enter completely perpendicular to the fan blades 13, which can reduce the cutting of the airflow by the fan blades 13 and reduce the noise generated by the airflow cutting, thereby further reducing noise.

[0040] Furthermore, the inner wall of the horn component 3 and the inner wall of the housing 11 are smoothly connected. As the airflow flows into the first air inlet 111 from the side corresponding to the inner wall of the horn opening, no vortex is formed in the first air inlet 111 due to the smooth transition between the inner wall of the horn component 3 and the inner wall of the housing 11. That is, no vortex noise is generated, thereby avoiding unnecessary noise generation and helping the air outlet assembly 100 to reduce noise.

[0041] In other embodiments, the noise reduction shell 2 and the speaker 3 are integrally formed, or the noise reduction shell 2 can be extended outward from one end near the first air inlet 111 to form the speaker 3. The speaker 3 does not have noise reduction holes. In terms of manufacturing process, it can be made from a single piece of material through a stamping process, which is simple and quick.

[0042] In some implementations, such as Figure 3As shown, the fan blade 13 is located on one side of the first air outlet 112, and the power unit 12 is located on one side of the first air inlet 111 and extends at least partially out of the housing 11. After the fan blade 13 rotates, the airflow can enter the housing 11 from the first air inlet 111 and flow out from the first air outlet 112.

[0043] The noise-reducing housing 2 is extended at one end near the first air outlet 112, and the power component 12 is located inside the noise-reducing housing 2. Multiple noise-reducing holes 21 are also provided around the extended portion of the noise-reducing housing 2. After the airflow reaches the position corresponding to the portion of the power component 12 extending outside the housing 11, the mechanical vibration sound waves generated by the power component 12 and the aerodynamic sound waves generated by the high-speed airflow can directly interact with the noise-reducing holes 21 around the extended portion of the noise-reducing housing 2, which is beneficial for further noise reduction. In addition, the pressure distribution of the noise-reducing holes 21 can reduce the resistance to airflow and reduce the noise generated by the high pressure of the airflow, further reducing the noise of the air outlet assembly 100.

[0044] In some embodiments, a damping layer is provided on the outer surface of the noise-reducing shell 2 and the inner wall of the noise-reducing hole 21. The damping layer is coated or sprayed on the outer surface of the noise-reducing shell 2 and the inner wall of the noise-reducing hole 21. The damping layer can absorb part of the sound waves generated when the air outlet assembly 100 is in working state, so that the sound wave energy that generates noise is attenuated, and has the effect of vibration reduction and noise reduction. In addition, the damping layer on the inner wall of the noise-reducing hole 21 reduces vibration and further reduces the hole diameter. The small hole diameter can reduce the probability that the sound wave will propagate directly without interacting with the hole wall. Therefore, in this embodiment, a damping layer is provided on the outer surface of the noise-reducing shell 2 and the inner wall of the noise-reducing hole 21, which can further reduce the noise of the air outlet assembly 100.

[0045] The damping layer can be made of waterborne polyurethane or other materials that have noise reduction and / or vibration damping effects.

[0046] In some embodiments, a sound-absorbing element 4 is fitted onto the outer surface of the noise-reducing housing 2, and the sound-absorbing element 4 covers the noise-reducing holes 21. The sound-absorbing element 4 is used to absorb the sound waves and energy of noise, which can further reduce the noise of the air outlet assembly 100.

[0047] The sound-absorbing component 4 can be a material with a rough surface, high density, or a porous structure, including but not limited to Pe, Pu, fiber cotton, and foamed fiber aluminum plate.

[0048] It is understandable that the aforementioned damping layer and sound-absorbing component 4 can be disposed separately on the noise reduction shell 2, or both the damping layer and sound-absorbing component 4 can be disposed on the noise reduction shell 2.

[0049] This utility model also provides an air outlet device, which includes a bracket and the air outlet component 100 in the above embodiments. The air outlet component 100 is assembled on the bracket, and the bracket can fix or support the air outlet component 100. When using the air outlet device, the bracket can be held by hand to use the air outlet device, or the bracket can be used to fix the air outlet device in other usage scenarios, making it convenient to use the air outlet device.

[0050] In some implementations, see Figures 4-6 The air outlet assembly 100 is installed inside the bracket 5, thus the bracket 5 can protect the air outlet assembly 100. The bracket 5 is provided with a second air inlet 51 and a second air outlet 52. The first air inlet 111 is connected to the second air inlet 51, and the first air outlet 112 is connected to the second air outlet 52. Air from outside the bracket 5 enters the bracket 5 through the second air inlet 51. The air flows to the first air inlet 111, and the fan blades 13 of the air outlet assembly 100 rotate to generate airflow that flows from the first air inlet 111 to the first air outlet 112 and is blown out from the second air outlet 52, thus realizing the air outlet device.

[0051] The second air inlet 51 and the second air outlet 52 can be respectively located at both ends of the bracket 5, and the number of the first air inlet 111 and the first air outlet 112 can be one or more.

[0052] The air outlet device provided by this utility model can be an electrical device such as a handheld fan or a neck fan. In other embodiments, it can also be other electrical devices that require air outlet, which is not limited here.

[0053] This utility model's air outlet device includes an air outlet assembly 100, which is assembled inside a bracket 5. The bracket 5 protects the air outlet assembly 100. Air from outside the bracket 5 enters the bracket 5 through the second air inlet 51. When it flows to the first air inlet 111, the fan blades 13 of the fan component 1 rotate to generate a high-speed airflow. The housing 11 can effectively guide the high-speed airflow. All the generated high-speed airflow flows from the first air inlet 111 to the first air outlet 112 and is blown out from the second air outlet 52, resulting in a large air volume and high speed at the second air outlet 52. At the same time, the noise reduction shell 2 is fitted around the outer periphery of the housing 11, and the noise reduction holes 21 can reduce the intensity of various noises generated by the fan component 1 during operation, improving user comfort.

[0054] In other implementations, such as Figure 4As shown, the bracket 5 includes an end portion 54 and a side portion 55. The end portion 54 is connected to the side portion 55. A second air inlet 51 is located at the end portion 54, and the side portion 55 has multiple air inlet holes 53 near the first air inlet 111. The multiple air inlet holes 53 of the side portion 55 can increase the air intake of the first air inlet 111. In addition, when the air inlet holes 53 of the side portion 55 are set small enough, the interaction between the air inlet holes 53 and the sound waves inside the bracket 5 can attenuate the sound waves and energy of the noise inside the bracket 5, thereby further reducing noise for the air outlet device.

[0055] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0056] In the description of the embodiments of this utility model, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0057] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0058] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0059] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An air outlet assembly, comprising: The air outlet assembly comprises a fan and a noise reduction shell, The fan comprises a housing, a power element and a fan blade, the power element is connected to the fan blade, the housing is provided with a first air inlet and a first air outlet at opposite ends, the power element drives the fan blade to rotate to generate airflow, and the airflow flows from the first air inlet to the first air outlet. The noise reduction shell is sleeved on the outer periphery of the housing, and a plurality of noise reduction holes are arranged on the circumferential side of the noise reduction shell.

2. The air outlet assembly of claim 1, wherein, The noise reduction shell is in interference fit with the housing.

3. The air outlet assembly according to claim 1, wherein The air outlet assembly further comprises a horn, one end of the horn is connected to one end of the noise reduction shell close to the first air inlet, and the opening of the horn gradually increases from one end close to the first air inlet to the other end.

4. The air outlet assembly of claim 3, wherein, The inner side wall of the horn and the inner side wall of the housing are smoothly connected.

5. The air outlet assembly according to claim 1, wherein The fan blade is arranged on one side of the first air outlet, and the power element is arranged on one side of the first air inlet and at least partially extends out of the housing; One end of the noise reduction shell close to the first air outlet is extended, and the power element is located in the noise reduction shell; The circumferential side of the extended part of the noise reduction shell is also provided with a plurality of noise reduction holes.

6. The air outlet assembly according to claim 1, wherein The outer surface of the noise reduction shell and the inner side wall of the noise reduction hole are also provided with a damping layer, the damping layer absorbs part of the sound waves generated when the air outlet assembly is in working state; and / or The outer surface of the noise reduction shell is sleeved with a sound absorbing element, and the sound absorbing element covers the noise reduction hole.

7. The air outlet assembly of claim 1, wherein, The diameter of the noise reduction hole is less than or equal to 0.7mm, and the center distance between two adjacent noise reduction holes is less than or equal to 1mm.

8. An air outlet device, characterized by The air outlet device comprises a support and the air outlet assembly according to any one of claims 1-7, and the air outlet assembly is assembled in the support.

9. The air outlet device according to claim 8, wherein The air outlet assembly is assembled in the support, and the support is provided with a second air inlet and a second air outlet; The first air inlet is communicated with the second air inlet, the first air outlet is communicated with the second air outlet, the fan blade rotates to generate airflow, and the airflow flows from the first air inlet to the first air outlet and is blown out from the second air outlet.

10. The air outlet device of claim 9, wherein, The support comprises an end portion and a side portion, the end portion is connected to the side portion, the second air inlet is arranged on the end portion, and a plurality of air inlets are arranged on the side portion close to the first air inlet.

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