Silencing device

Abstract

This application relates to the field of outdoor energy storage cabinet technology, and in particular to a noise reduction device, comprising: a flow guide member and multiple internal noise reduction devices; wherein, the flow guide member is used for installation on a target object; the flow guide member forms an installation cavity extending through both ends along a first preset direction, and the first opening end of the installation cavity is connected to the ventilation opening of the target object; multiple internal noise reduction devices are all disposed within the installation cavity of the flow guide member, and an air duct extending along the first preset direction or along a direction forming an angle with the first preset direction is formed between any two adjacent internal noise reduction devices. It can be seen that in this application, the flow guide member is installed outside the ventilation opening of the target object, such as an outdoor energy storage cabinet, extending the air duct and thus increasing the airflow distance, and the internal noise reduction devices are installed inside the flow guide member, thereby reducing noise, i.e., achieving noise reduction.

Description

Technical Field

[0001] This application relates to the field of outdoor energy storage cabinet technology, and in particular to a noise reduction device. Background Technology

[0002] Outdoor energy storage cabinets are energy storage devices specifically designed for outdoor environments. They combine liquid cooling technology, fire suppression systems, and monitoring systems, and can be used in solar power generation, off-grid systems, and emergency power supplies. They are receiving increasing attention and importance. Currently, the main source of noise in outdoor energy storage cabinets is the internal fan, which generates significant noise during air intake and exhaust. At full power operation, the noise level of outdoor energy storage cabinets is generally between 80-90 dB, severely limiting their use in densely populated industrial or residential areas. Therefore, there is an urgent need to develop a noise reduction structure that can reduce noise levels in outdoor energy storage cabinets without reducing power output. Utility Model Content

[0003] The purpose of this application is to provide a noise reduction device that, to a certain extent, solves the technical problem of the urgent need to develop a noise reduction structure that can reduce noise in outdoor cabinets without reducing power during use.

[0004] This application provides a noise reduction device, including: a flow guiding member and a plurality of internal noise reduction devices; wherein, the flow guiding member is used for installation on a target object; the flow guiding member forms an installation cavity extending through both ends along a first preset direction, and the first opening end of the installation cavity is connected to the ventilation port of the target object; Multiple internal silencing devices are disposed within the mounting cavity of the airflow guide member, and an air duct extending along the first preset direction or along a direction forming an angle with the first preset direction is formed between any two adjacent internal silencing devices.

[0005] In the above technical solution, the internal silencing device further includes at least one internal silencing component, and the internal silencing component extends along the first preset direction or along a direction that forms an angle with the first preset direction.

[0006] In any of the above technical solutions, the internal sound-absorbing component extends in a wave-like manner along the first preset direction or along a direction that forms an angle with the first preset direction, so that the air duct is wave-like.

[0007] In any of the above technical solutions, the internal noise reduction component further includes a plurality of noise reduction parts arranged sequentially and connected along its extension direction, and the angle formed between any two adjacent noise reduction parts is 45°; or the internal noise reduction component includes a plurality of noise reduction parts arranged sequentially and connected along its extension direction, and the angle formed between any two adjacent noise reduction parts is 60°.

[0008] In any of the above technical solutions, the internal sound-absorbing component extends in a gradually rising wave shape along the first preset direction or along a direction that forms an angle with the first preset direction and toward a direction away from the target object, so that the air duct is in a gradually rising wave shape.

[0009] In any of the above technical solutions, further, along the height direction of the airflow guide member, the upper internal silencing member extends straight and then obliquely upward along the first preset direction away from the target object, so that the upper air duct is first straight and then obliquely upward; the lower internal silencing member extends along the first preset direction, so that the lower air duct is straight; or along the height direction of the airflow guide member, the lower internal silencing member extends straight and then obliquely downward along the first preset direction away from the target object, so that the lower air duct is first straight and then obliquely downward; the upper internal silencing member extends along the first preset direction, so that the upper air duct is straight.

[0010] In any of the above technical solutions, a protrusion is further formed on the surface of the internal sound-absorbing component near the air duct.

[0011] In any of the above technical solutions, a first air guide hole is further formed on at least one side of the cavity wall corresponding to the air duct, and the first air guide hole is connected to the air duct.

[0012] In any of the above technical solutions, the diameter of the first air guide hole is d1, and 30nm≤d1≤50nm.

[0013] In any of the above technical solutions, the top wall and / or bottom wall of the mounting cavity are further provided with a second air guide hole, and the internal sound-absorbing component is provided with a third air guide hole, and the third air guide hole is provided in correspondence with the second air guide hole.

[0014] In any of the above technical solutions, the diameters of the second air guide hole and the third air guide hole are both d2, and 30nm≤d2≤50nm.

[0015] In any of the above technical solutions, the internal noise-absorbing component is further bonded together with the flow-guiding component.

[0016] In any of the above technical solutions, the internal sound-absorbing component is further described as a plate-like structure.

[0017] In any of the above technical solutions, the material of the internal sound-absorbing components is sound-absorbing cotton.

[0018] In any of the above technical solutions, the silencing device further includes an external silencing component, which covers the outside of the flow guide component and forms a flow guide space between the external silencing component and the flow guide component; along the first preset direction, a first passage and a second passage are respectively formed at opposite ends of the external silencing component, and the first passage is corresponding to the first opening end of the flow guide component, and the second passage is corresponding to the second opening end of the flow guide component.

[0019] In any of the above technical solutions, the silencing device further includes an outer cover, the external silencing component is disposed inside the outer cover and connected to the outer cover; along the first preset direction, a third passage and a fourth passage are respectively formed at opposite ends of the outer cover, and the third passage is disposed corresponding to the first passage and the fourth passage is disposed corresponding to the second passage.

[0020] In any of the above technical solutions, the external sound-absorbing component is further bonded to the outer cover.

[0021] In any of the above technical solutions, the flow guiding component, the outer cover, and the target object are further detachably connected by the first fastening component.

[0022] In any of the above technical solutions, the silencing device further includes a plurality of support plates connected to the flow guiding member, and the plurality of support plates are all disposed in the mounting cavity of the flow guiding member, and the internal silencing device is fixed to the corresponding support plate; the internal silencing device is bonded together with the corresponding support plate.

[0023] In any of the above technical solutions, the external noise-reducing component is further described as a shell structure.

[0024] In any of the above technical solutions, the material of the external sound-absorbing component is sound-absorbing cotton.

[0025] Compared with the prior art, the beneficial effects of this application are as follows: In this application, a flow guide component is installed on the outside of the ventilation opening of the target object, such as an outdoor energy storage cabinet, which extends the air duct and increases the air flow distance. An internal sound-absorbing device is installed inside the flow guide component, thereby reducing noise. Attached Figure Description To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 An exploded view of the silencing device provided in Embodiment 1 of this application; Figure 2 This is an assembly diagram of the silencing device provided in Embodiment 1 of this application; Figure 3 Another assembly diagram of the silencing device provided in Embodiment 1 of this application; Figure 4 for Figure 3 A sectional view along section AA; Figure 5 This is an assembly drawing of the flow guiding component and internal noise reduction device provided in Embodiment 1 of this application; Figure 6 Another assembly drawing of the flow guiding component and internal silencing device provided in Embodiment 1 of this application; Figure 7 Another assembly drawing of the flow guiding component and internal silencing device provided in Embodiment 1 of this application; Figure 8 for Figure 7 A sectional view along section BB; Figure 9 This is a schematic diagram of the internal silencing device provided in Embodiment 1 of this application; Figure 10 This is another structural schematic diagram of the internal silencing device provided in Embodiment 1 of this application; Figure 11 This is a cross-sectional view of the silencing device provided in Embodiment 2 of this application; Figure 12 This is an assembly drawing of the flow guiding component and internal noise reduction device provided in Embodiment 2 of this application; Figure 13 This is a schematic diagram of the internal silencing device provided in Embodiment 2 of this application; Figure 14 This is another structural schematic diagram of the internal silencing device provided in Embodiment 2 of this application; Figure 15This is a schematic diagram of the flow guiding component provided in Embodiment 2 of this application; Figure 16 This is a cross-sectional view of the silencing device provided in Embodiment 3 of this application; Figure 17 This is an assembly drawing of the flow guiding component and internal noise reduction device provided in Embodiment 3 of this application; Figure 18 This is a schematic diagram of the internal silencing device provided in Embodiment 3 of this application; Figure 19 This is a cross-sectional view of the silencing device provided in Embodiment 4 of this application; Figure 20 This is an assembly drawing of the flow guiding component and internal noise reduction device provided in Embodiment 4 of this application; Figure 21 This is a schematic diagram of the internal silencing device provided in Embodiment 4 of this application.

[0027] Figure label: 1-Guide component, 11-Installation cavity, 12-First air guide hole, 13-Second air guide hole, 14-First assembly flange, 15-First opening end, 16-Second opening end, 17-Air duct, 2-Internal silencer, 21-Internal silencer component, 211-Silencer section, 212-Third air guide hole, 3-External silencer component, 31-Air guide space, 32-First passage, 33-Second passage, 4-Outer cover, 41-Second assembly flange, 42-Third passage, 43-Fourth passage, 5-Support plate, 6-First fastening component, a-First preset direction. Detailed Implementation

[0028] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0029] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0030] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] The following reference Figures 1 to 21 This application describes a noise reduction device according to some embodiments.

[0034] Example 1 See Figures 1 to 10 As shown, an embodiment of this application provides a noise reduction device, including: a flow guide member 1 and a plurality of internal noise reduction devices 2; wherein, the flow guide member 1 is used to install on a target object, such as an outdoor energy storage cabinet; the flow guide member 1 forms an installation cavity 11 extending through both ends along a first preset direction a, and the first opening end 15 of the installation cavity 11 is connected to the ventilation port of the target object. It should be noted that the ventilation port can be an air inlet or an air outlet, whichever is selected according to actual needs. Multiple internal silencing devices 2 are disposed in the mounting cavity 11 of the flow guide member 1, and an air duct 17 is formed between any two adjacent internal silencing devices 2, extending along the first preset direction a or along a direction that forms an angle with the first preset direction a.

[0035] As can be seen from the structure described above, in this application, a flow guide component 1 is installed outside the ventilation opening of the target object, such as an outdoor energy storage cabinet, which extends the air duct 17 and increases the air flow distance. An internal sound-absorbing device 2 is installed inside the flow guide component 1, thereby reducing noise.

[0036] Furthermore, the surface of the internal sound-absorbing component 21 near the air duct 17 has a protrusion (not shown in the figure) that can refract sound waves, thereby reducing noise. Of course, it is not limited to this; the outer surface of the internal sound-absorbing component 21 can also be a flat surface, that is, its outer surface does not have a protrusion, depending on the actual needs.

[0037] It should be noted that the target object is not limited to outdoor energy storage cabinets, but can also be other equipment, depending on actual needs. In other words, the silencing device provided in this application can also be applied to other equipment.

[0038] In this embodiment, preferably, as follows: Figures 4 to 10 As shown, the internal silencing devices 2 near the top and bottom walls of the flow guide member 1 include only one internal silencing member 21, while the remaining internal silencing devices 2 between them each include two internal silencing members 21, and the internal silencing members 21 extend along the first preset direction a or along a direction that forms an angle with the first preset direction a. As can be seen from the structure described above, apart from the internal silencing devices 2 at the top and bottom, the remaining internal silencing devices 2 located between them all include two internal silencing components 21. These two internal silencing components 21 can be correspondingly attached to the opposite sides of the corresponding support plate 5, and the same support plate 5 can simultaneously support two internal silencing components 21 in one internal silencing device 2.

[0039] It should be noted that the internal silencing device 2 in the middle area is not limited to including two internal silencing components 21. It can also include one internal silencing component 21, or more than two internal silencing components 21, such as three or four internal silencing components 21. In addition, the internal silencing device 2 located near the top or bottom wall of the flow guide member 1 can also include two internal silencing components 21, etc., depending on the actual needs. In this embodiment, preferably, as follows: Figures 8 to 10 As shown, along the height direction of the flow guide member 1, the upper internal silencing member 21 extends straight and then obliquely upward along the first preset direction a, away from the target object, so that the upper air duct 17 is set straight and then obliquely upward, which matches the shape of the top of the flow guide member 1; the lower internal silencing member 21 extends along the first preset direction a, so that the lower air duct 17 is set in a straight shape. As can be seen from the structure described above, since the silencing device in this application is mainly installed on the side near the bottom of the target object, such as an outdoor energy storage cabinet, and when the air guide member 1 extends along the first preset direction a, that is, perpendicular to the height direction of the outdoor energy storage cabinet, there is almost no space below the bottom of the air guide member 1, while there is sufficient space above the air guide member 1. Based on this, the upper air guide member 1 can be set to extend obliquely upward, that is, the upper air duct 17 extends obliquely upward. Compared with the straight air duct 17, the distance of the air duct 17 can be lengthened, which helps to reduce noise. Moreover, it can be connected to the top of the air guide member 1 through the second air guide hole 13 at the top, which helps to improve the heat dissipation effect and increase the wind pressure and wind speed.

[0040] It should be noted that, not limited to the above, when there is sufficient space at the bottom of the flow guide member 1, the lower internal silencing member 21 can also be arranged to extend straight and then diagonally downward along the height direction of the flow guide member 1, so that the lower air duct 17 is arranged straight and then diagonally downward; the upper internal silencing member 21 extends along the first preset direction a, so that the upper air duct 17 is arranged in a straight shape, and the specific selection is based on actual needs.

[0041] In this embodiment, preferably, as follows: Figure 5 and Figure 6 As shown, the two side walls of the mounting cavity 11 corresponding to the air duct 17 are formed with first air guide holes 12, and the first air guide holes 12 are connected to the air duct 17. As can be seen from the structure described above, first air guide holes 12 are opened on both sides of the air guide component 1 to ensure air pressure and air speed, and also to improve the heat dissipation effect. In addition, the first air guide holes 12 also help to reduce weight and play a role in lightweighting.

[0042] Furthermore, preferably, the aforementioned first air guide holes 12 are formed on the upper parts of the opposite side walls of the mounting cavity 11. This is mainly because the upper air duct 17 is arranged along an inclined direction, rather than a straight air duct 17. Therefore, it is necessary to correspondingly open the first air guide holes 12 on the upper parts of the two side walls of the mounting cavity 11 to increase the air pressure and air velocity, thereby aiding in heat dissipation. Of course, this is not limited to this. The aforementioned first air guide holes 12 can also be formed on the upper part of only one side wall of the mounting cavity 11, or on both the upper and lower parts of only one side wall of the mounting cavity 11, depending on the actual needs.

[0043] In this embodiment, preferably, as follows: Figure 5 and Figure 6 As shown, the diameter of the first air guide hole 12 is d1, and 30nm≤d1≤50nm. As can be seen from the structure described above, if the diameter of the first air guide hole 12 is too small, it will reduce the air pressure and air speed and affect heat dissipation. If the diameter of the first air guide hole 12 is too large, it will affect noise reduction. Therefore, the diameter of the first air guide hole 12 should be within the above range to ensure air pressure and air speed, and also help with heat dissipation and noise reduction.

[0044] In this embodiment, preferably, as follows: Figure 5 As shown, the top wall of the mounting cavity 11 has a second air guide hole 13, and the internal sound-absorbing component 21 has a third air guide hole 212. The third air guide hole 212 is correspondingly arranged with the second air guide hole 13. It can be seen that the second air guide hole 13 is arranged along a direction perpendicular to the first preset direction a. Correspondingly, the third air guide hole 212 is also arranged along a direction perpendicular to the first preset direction a. In addition, the second air guide hole 13 and the third air guide hole 212 also help to reduce weight and play a role in lightweighting. As can be seen from the structure described above, the space above the airflow guide member 1 is large, so a second airflow guide hole 13 is opened on the top wall of the mounting cavity 11. Correspondingly, a third airflow guide hole 212 corresponding to the second airflow guide hole 13 is opened on the internal sound-absorbing member 21, thereby increasing the heat dissipation air duct 17 and helping to improve the heat dissipation effect.

[0045] It should be noted that the second air guide hole 13 is not limited to being provided on the top wall of the mounting cavity 11, but can also be provided on the bottom wall of the mounting cavity 11, or the second air guide hole 13 can be provided on both the top and bottom walls of the mounting cavity 11. The specific choice depends on the actual needs.

[0046] In this embodiment, preferably, as follows: Figure 5 As shown, the diameters of the second air guide hole 13 and the third air guide hole 212 are both d2, and 30nm≤d2≤50nm. As can be seen from the structure described above, if the diameter of the second air guide hole 13 is too small, it will affect heat dissipation; if the diameter of the second air guide hole 13 is too large, it will affect noise reduction. Therefore, the diameter of the second air guide hole 13 should be within the above range to ensure heat dissipation and help reduce noise.

[0047] In this embodiment, preferably, as follows: Figures 1 to 4 As shown, the silencing device also includes an external silencing component 3, which covers the outside of the flow guiding component 1 and forms a flow guiding space 31 between it and the flow guiding component 1 to avoid blocking the aforementioned air guiding holes and ensure heat dissipation efficiency. Along the first preset direction a, the opposite ends of the external silencing component 3 are respectively provided with a first through-hole 32 and a second through-hole 33, and the first through-hole 32 is provided corresponding to the first opening end 15 of the flow guiding component 1, and the second through-hole 33 is provided corresponding to the second opening end 16 of the flow guiding component 1 to avoid blocking the second opening end 16 and ensure heat dissipation.

[0048] As can be seen from the structure described above, an external noise-reducing component 3 is installed outside the flow guide component 1 to further reduce noise and enhance the noise reduction effect. Of course, this is not the only option; the external noise-reducing component 3 may not be installed outside the flow guide component 1, depending on the actual needs.

[0049] Furthermore, preferably, the external sound-absorbing component 3 is a square shell structure with openings, which is spliced ​​together from multiple pieces of sound-absorbing cotton. Of course, it is not limited to this.

[0050] In this embodiment, preferably, as follows: Figures 1 to 4 As shown, the silencing device also includes an outer cover 4, and an external silencing component 3 is disposed inside the outer cover 4 and connected to the outer cover 4; along the first preset direction a, the opposite ends of the outer cover 4 are respectively formed with a third passage 42 and a fourth passage 43, and the third passage 42 is corresponding to the first passage 32, and the fourth passage 43 is corresponding to the second passage 33, which can ensure normal heat dissipation.

[0051] As described above, the outer cover 4 provides good support for the external sound-absorbing component 3. It also protects the component from dust and water. Furthermore, the outer cover 4 not only supports the external sound-absorbing component 3 but can also support other components. It should be noted that the outer cover 4 can be omitted; in this case, the external sound-absorbing component 3 possesses sufficient strength and does not require additional support.

[0052] In this embodiment, preferably, the external sound-absorbing component 3 is bonded together with the outer cover 4.

[0053] As can be seen from the structure described above, the external sound-absorbing component 3 and the outer cover 4 are connected together by adhesive, which is a reliable structure and simple and convenient to operate. Of course, the connection method between the external sound-absorbing component 3 and the external cover is not limited to this and can be selected according to actual needs.

[0054] In this embodiment, preferably, as follows: Figure 2 As shown, the flow guide 1, the outer cover 4, and the target object are detachably connected by the first fastening member 6, such as screws or bolts.

[0055] As described above, the flow guide component 1, the outer cover 4, and the target object are detachably connected by the first fastening component 6, facilitating initial installation and subsequent disassembly and maintenance, and also reducing the number of first fastening components 6 required. However, this is not the only option; different first fastening components 6 can be used to connect the flow guide component 1 to the target object, or the outer cover 4 to the target object, or alternatively, a non-detachable connection can be used, depending on the specific needs.

[0056] Furthermore, preferably, the outer periphery of the first opening end 15 of the flow guide member 1 is provided with a first mounting flange 14, the outer periphery of the third opening 42 of the outer cover 4 is provided with a second mounting flange 41, and the first mounting flange 14 of the flow guide member 1 and the second mounting flange 41 of the outer cover 4 are detachably connected to the side wall of the target object, such as an outdoor energy storage cabinet, through the first fastening member 6.

[0057] In this embodiment, preferably, as follows: Figure 4 and Figure 8 As shown, the silencing device also includes multiple support plates 5 connected to the flow guiding member 1, and the multiple support plates 5 are all disposed in the mounting cavity 11 of the flow guiding member 1, and the internal silencing device 2 is fixed on the corresponding support plate 5.

[0058] As can be seen from the structure described above, the support plate 5 serves to support the internal sound-absorbing component 21.

[0059] Furthermore, preferably, the internal silencing device 2 is bonded together with the corresponding support plate 5, which makes the structure stable and reliable, and also simple and convenient to operate.

[0060] In this embodiment, preferably, both the internal sound-absorbing component 21 and the external sound-absorbing component 3 are made of sound-absorbing cotton, which has a good sound-absorbing effect and low cost.

[0061] Example 2 See Figures 11 to 15 As shown, the silencing device in this embodiment is an improvement on the basis of Embodiment 1. The technical content disclosed in Embodiment 1 will not be described again, and the content disclosed in Embodiment 1 also belongs to the content disclosed in this embodiment.

[0062] The difference in structure between the muffler in this embodiment and the muffler in Embodiment 1 is as follows: See Figures 11 to 15 As shown, the internal sound-absorbing component 21 extends in a gradually rising wave shape along a direction that forms an angle with the first preset direction a and toward the direction away from the target object, so that the air duct 17 is in a gradually rising wave shape.

[0063] As can be seen from the structure described above, within a limited space, increasing the length of the air duct 17 increases the airflow path, greatly improving the noise reduction effect. It should be noted that in this embodiment, because there is sufficient space above the guide member 1, the air duct 17 is arranged in a gradually rising wave shape, i.e., an upwardly extending wave shape. Of course, this is not limited to this. When there is sufficient space below the guide member 1, the internal sound-absorbing member 21 can also extend in a gradually descending wave shape along the first preset direction a or in a direction forming an angle with the first preset direction a and moving away from the target object, i.e., the air duct 17 is a gradually descending wave shape. Alternatively, the internal sound-absorbing member 21 can extend in a wave shape along the first preset direction a, etc., depending on the actual needs. Further, preferably, such as Figure 14 As shown, the internal silencing component 21 includes a plurality of silencing parts 211 arranged sequentially and connected along its extension direction, and the angle α formed between any two adjacent silencing parts 211 is 45°. This effectively increases the airflow path while maintaining a reasonable angle size, facilitating manufacturing. Of course, it is not limited to this; α can also be greater than 45° or less than 45°, depending on the actual needs. Further, preferably, such as Figure 12 As shown, the two opposite side walls of the flow guide member 1 are provided with a plurality of uniformly arranged first air guide holes 12. That is, the upper and lower parts of the side walls of the flow guide member 1 are provided with first air guide holes 12, unlike the first one which is only provided with first air guide holes 12 in the upper part and not in the lower part. The top and bottom walls of the flow guide member 1 are provided with a plurality of uniformly arranged second air guide holes 13. Correspondingly, the internal sound-absorbing member 21 is provided with third air guide holes 212. That is, all the inner walls of the mounting cavity 11 are perforated to ensure wind pressure and wind speed and to help improve the heat dissipation effect.

[0064] In this embodiment, preferably, as follows: Figure 12 As shown, the diameters of the second air guide hole 13 and the third air guide hole 212 are both d2, and d2=50nm. The hole size is relatively large, which ensures air pressure and air velocity, and also helps with heat dissipation. Example 3 See Figures 16 to 18 As shown, the silencing device in this embodiment is an improvement on the second embodiment. The technical content disclosed in the second embodiment will not be described again, and the content disclosed in the second embodiment is also part of the content disclosed in this embodiment.

[0065] The difference in structure between the silencing device in this embodiment and the silencing device in Embodiment 1 is that: Figures 16 to 18As shown, the internal silencing component 21 includes a plurality of silencing parts 211 arranged sequentially and connected along its extension direction, and the angle α formed between any two adjacent silencing parts 211 is 45°. While effectively increasing the airflow path, the angle size is reasonable and convenient for processing and manufacturing. The diameters of the second air guide hole 13 and the third air guide hole 212 are both d2, and d2=30nm. The hole size is reasonable, and more air guide holes can be arranged in the effective space.

[0066] As can be seen from the structure described above, within a limited space, increasing the length of the air duct 17 increases the airflow path, thereby greatly improving the noise reduction effect. Example 4 See Figures 19 to 21 As shown, the silencing device in this embodiment is an improvement on the basis of embodiment three. The technical content disclosed in embodiment three will not be described again, and the content disclosed in embodiment three also belongs to the content disclosed in this embodiment.

[0067] The difference in structure between the silencing device in this embodiment and the silencing device in Embodiment 1 is that: Figures 19 to 21 As shown, the internal noise reduction component 21 includes a plurality of noise reduction parts 211 arranged sequentially and connected along its extension direction, and the angle α formed between any two adjacent noise reduction parts 211 is 60°.

[0068] As can be seen from the structure described above, within a limited space, increasing the length of the air duct 17 increases the airflow path, greatly improving the noise reduction effect. Moreover, the angle is reasonable and convenient for processing and manufacturing. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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. Such 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 application.

Claims

1. A sound attenuating device, characterized in that include: The flow guiding component and multiple internal noise reduction devices are provided; wherein the flow guiding component is used for installation on a target object; the flow guiding component forms an installation cavity extending through both ends along a first preset direction, and the first opening end of the installation cavity is connected to the ventilation port of the target object; Multiple internal silencing devices are disposed within the mounting cavity of the airflow guide member, and an air duct extending along the first preset direction or along a direction forming an angle with the first preset direction is formed between any two adjacent internal silencing devices.

2. The sound attenuating device of claim 1, wherein, The internal noise reduction device includes at least one internal noise reduction component, and the internal noise reduction component extends along the first preset direction or along a direction that forms an angle with the first preset direction.

3. The sound attenuating device of claim 2, wherein, The internal sound-absorbing component extends in a wave-like manner along the first preset direction or along a direction that forms an angle with the first preset direction, so that the air duct is wave-like.

4. The sound attenuating device of claim 3, wherein, The internal noise-absorbing component includes a plurality of noise-absorbing sections arranged sequentially and connected along its extension direction, and the angle formed between any two adjacent noise-absorbing sections is 45°; or the internal noise-absorbing component includes a plurality of noise-absorbing sections arranged sequentially and connected along its extension direction, and the angle formed between any two adjacent noise-absorbing sections is 60°; and / or The internal sound-absorbing component extends in a gradually rising wave shape along the first preset direction or along a direction that forms an angle with the first preset direction and toward the direction away from the target object, so that the air duct is in a gradually rising wave shape.

5. The sound attenuating device of claim 2, wherein, Along the height direction of the airflow guide member, the upper internal silencing member extends horizontally and then obliquely upwards along the first preset direction, away from the target object, so that the upper air duct is first straight and then obliquely upwards; the lower internal silencing member extends along the first preset direction, so that the lower air duct is straight; or along the height direction of the airflow guide member, the lower internal silencing member extends horizontally and then downwards along the first preset direction, away from the target object, so that the lower air duct is first straight and then obliquely downwards; the upper internal silencing member extends along the first preset direction, so that the upper air duct is straight; and / or The surface of the internal sound-absorbing component near the air duct has a protrusion.

6. The sound attenuating device of claim 1, wherein, At least one side wall of the mounting cavity corresponding to the air duct is formed with a first air guide hole, and the first air guide hole is connected to the air duct.

7. The sound attenuating device of claim 6, wherein, The diameter of the first air guide hole is d1, and 30nm≤d1≤50nm.

8. The sound attenuating device of claim 2, wherein, The top and / or bottom wall of the mounting cavity is provided with a second air guide hole, and the internal sound-absorbing component is provided with a third air guide hole, and the third air guide hole is provided in correspondence with the second air guide hole.

9. The sound attenuating device of claim 8, wherein, The diameters of the second and third air guide holes are both d2, and 30nm≤d2≤50nm.

10. The sound attenuating device of claim 2, wherein, The internal noise-absorbing component is bonded together with the flow-guiding component; and / or The internal sound-absorbing component is a plate-like structure; and / or The internal sound-absorbing components are all made of sound-absorbing cotton.

11. The sound attenuating device of any one of claims 1 to 10, wherein, The silencing device further includes an external silencing component, which covers the outside of the flow guide component and forms a flow guide space between the external silencing component and the flow guide component; along the first preset direction, a first passage and a second passage are respectively formed at opposite ends of the external silencing component, and the first passage is corresponding to the first opening end of the flow guide component, and the second passage is corresponding to the second opening end of the flow guide component; The silencing device further includes an outer cover, and the external silencing component is disposed inside the outer cover and connected to the outer cover; along the first preset direction, a third passage and a fourth passage are respectively formed at opposite ends of the outer cover, and the third passage is disposed corresponding to the first passage, and the fourth passage is disposed corresponding to the second passage; The external sound-absorbing component is bonded together with the outer cover; The flow guide member, the outer cover, and the target object are detachably connected via a first fastening member; and / or The silencing device further includes multiple support plates connected to the flow guiding member, and all of the multiple support plates are disposed within the mounting cavity of the flow guiding member. The internal silencing device is fixed to the corresponding support plate; the internal silencing device is bonded to the corresponding support plate; and / or The external noise-absorbing component is a shell structure; and / or The external sound-absorbing components are all made of sound-absorbing cotton.

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