Muffler body, server muffler, and server

Abstract

A muffler body, a server muffler, and a server. The muffler body comprises a first wall (11) and a second wall (12) arranged spaced apart, wherein at least one partition plate is connected between the first wall (11) and the second wall (12), so that at least one acoustic cavity (13) is formed between the first wall (11) and the second wall (12). A portion of one of the first wall (11) and the second wall (12) corresponding to the acoustic cavity (13) is provided with an opening (14) penetrating through the wall thickness. When the number of the acoustic cavities (13) is at least two, all of the acoustic cavities (13) have the same structure and size, and all of the acoustic cavities (13) correspond to a preset target frequency, so that the muffler body can perform noise reduction at the target frequency.

Description

Silencers, server silencers and servers

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202412000217.9, filed with the Chinese Patent Office on December 31, 2024, entitled “A silencer, a server silencer and a server”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of server noise reduction technology, and more specifically, to a silencer, a server silencer, and a server. Background Technology

[0004] With the development of electronic information technology, servers, as a key infrastructure supporting modern data centers, are widely used in various industries. When servers are working, their electronic components generate a significant amount of heat, which can affect their operation. Therefore, effective heat dissipation is one of the key factors in ensuring stable server operation.

[0005] Currently, server cooling primarily relies on fan-driven airflow to remove heat generated by electronic components. However, when fans operate at high speeds, they produce noise of various frequencies, including aerodynamic noise, electromagnetic noise, and vibration noise. This noise can significantly impact the performance of server hard drives.

[0006] Application content

[0007] The purpose of this application is to provide a silencer, a server silencer, and a server that can reduce the impact of noise on the server hard drive.

[0008] To achieve the above objectives, this application provides the following technical solution:

[0009] According to a first aspect of this application, a sound-absorbing body is provided, including a first wall and a second wall spaced apart, with at least one partition connecting the first wall and the second wall to form at least one acoustic cavity between the first wall and the second wall, and one of the first wall and the second wall having an opening penetrating the wall thickness in the portion corresponding to the acoustic cavity; when the number of acoustic cavities is at least two, all acoustic cavities have the same structure and size, and all acoustic cavities correspond to a preset target frequency, so that the sound-absorbing body can reduce noise at the target frequency.

[0010] In some embodiments, the sound-absorbing body is a cylindrical structure, with the first wall being an annular inner wall of the cylindrical structure, the second wall being an annular outer wall of the cylindrical structure, and the opening being located on the first wall.

[0011] In some embodiments, the corresponding ends of the first wall and the second wall are sealed together, and the partition extends along the axial direction of the cylindrical structure from one end of the cylindrical structure to the other end of the cylindrical structure.

[0012] In some embodiments, the number of acoustic cavities is at least two, all acoustic cavities are evenly distributed along the circumference of the cylindrical structure, and all openings are evenly distributed along the circumference of the cylindrical structure.

[0013] In some embodiments, the outer periphery of the second wall away from the first wall is provided with at least one mounting structure, the mounting structure including:

[0014] The chute extends along the axial direction of the sound absorber to both ends of the second wall;

[0015] Two slots are located at both ends of the second wall and are connected to both ends of the slide groove.

[0016] In some embodiments, the distance from the wall of the opening to the end of the silencer near the wall is ≥10mm.

[0017] In some implementations, when determining the size parameters of the acoustic cavity, the target frequency of the noise to be absorbed by the acoustic cavity is obtained; and a frequency correction factor is determined; based on the frequency correction factor and the target frequency, a correction frequency is obtained; and based on the correction frequency, the size parameters of the acoustic cavity are designed.

[0018] In some implementations, before designing the size parameters of the acoustic cavity according to the correction frequency, the method further includes obtaining the target amplitude of noise that the acoustic cavity needs to eliminate; and obtaining the target bandwidth of the acoustic cavity for absorbing noise; and designing the size parameters of the acoustic cavity according to the correction frequency, including: designing the size parameters of the acoustic cavity according to the correction frequency, the frequency correction factor, the target amplitude, and the target bandwidth.

[0019] According to a second aspect of this application, a server muffler is provided, comprising at least one of the above-described mufflers.

[0020] In some implementations, a mounting bracket is also included, to which the silencer is connected, and the mounting bracket is used for mounting on the server.

[0021] In some embodiments, the mounting bracket includes:

[0022] The installation channel is used to house the sound-absorbing body.

[0023] In some embodiments, the sound-absorbing body is a cylindrical structure, and the sound-absorbing body includes a first wall and a second wall, wherein the second wall is an annular outer wall of the cylindrical structure;

[0024] One of the mounting channel and the second wall of the muffler is provided with a slide and a first locking part communicating with the slide, and the other is provided with a second locking part. The second locking part can slide along the slide and can be engaged with the first locking part by rotating the muffler relative to the mounting bracket.

[0025] In some embodiments, the silencer is a cylindrical structure, and there are at least two silencers. All silencers are arranged along the axial direction of the cylindrical structure and are all located in the installation channel.

[0026] In some implementations, at least two silencers correspond to different target frequencies.

[0027] In some embodiments, the mounting bracket is provided with:

[0028] The first sliding limit part is used to slide and cooperate with the second sliding limit part of the server;

[0029] The fixing part is used for fixed connection with the server.

[0030] According to a third aspect of this application, a server is provided, including the server muffler described above.

[0031] The sound-absorbing body provided by the above-mentioned technical solution of this application has the following beneficial effects:

[0032] Since each cavity of the silencer corresponds to a preset target frequency, meaning the silencer is specifically designed to eliminate that frequency, it can effectively reduce noise at the target frequency, achieving a good noise reduction effect. Furthermore, this structure facilitates standardization and modularization. In practical use, it eliminates the need to design specific cavity structures based on the target frequency. Instead, standard silencers are designed for the main frequency bands or a series of frequency bands affecting server hard drive performance. In actual use, only the corresponding standardized silencer needs to be selected based on the target frequency. The entire process avoids repetitive design and manufacturing of silencers based on the target frequency, simplifying the design, development, and manufacturing processes, reducing usage costs, achieving alternative design, and lowering the implementation cost of silencer usage.

[0033] The server muffler provided by the above-described technical solution of this application includes the aforementioned muffler body. Therefore, the server muffler at least includes the beneficial effects of the aforementioned muffler body.

[0034] The server provided by the above-described technical solution of this application includes the aforementioned server muffler; therefore, the server at least includes the beneficial effects of the aforementioned server muffler. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 is a flowchart of the sound-absorbing body design method provided in a specific embodiment of this application.

[0037] Figure 2 is a schematic diagram of the structure of the silencer provided in a specific embodiment of this application.

[0038] Figure 3 is a planar schematic diagram of the sound-absorbing body shown in Figure 2 after it has been unfolded.

[0039] Figure 4 is a schematic cross-sectional view of the acoustic cavity of the silencer.

[0040] Figure 5 is a schematic diagram of the installation structure of the silencer.

[0041] Figure 6 is a schematic diagram of the mounting bracket.

[0042] Figure 7 is an exploded view of the two silencers and their mounting brackets when there are two silencers.

[0043] Figure 8 is a schematic diagram of the assembled structure shown in Figure 7.

[0044] Reference numerals: 1-Silencer; 11-First wall; 12-Second wall; 13-Sound cavity; 14-Opening; 151-Slide groove; 152-Slot; 2-Mounting bracket; 21-Mounting channel; 22-Protrusion; 23-First sliding limit part; 24-Fixing plate part; 241-Fixing hole; 25-Relief groove; 26-Weight reduction hole. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] The core of this application is to provide a sound-absorbing body design method that can reduce the impact of noise on server hard drives. Another core aspect of this application is to provide a sound-absorbing body whose acoustic cavity parameters are determined according to the aforementioned sound-absorbing body design method, thereby reducing the impact of noise on server hard drives. Another core aspect of this application is to provide a server silencer that can reduce the impact of noise on server hard drives. Yet another core aspect of this application is to provide a server whose hard drive performance is minimally affected by noise.

[0047] Please refer to Figure 1. This application embodiment provides a sound-absorbing body design method, applied to a sound-absorbing body 1 (as shown in Figure 2). The sound-absorbing body 1 is provided with a sound cavity 13 (as shown in Figure 4). The sound-absorbing body design method includes steps S1-S4:

[0048] S1: Obtain the target frequency of the noise absorbed by the acoustic cavity 13 of the silencer 1.

[0049] S2: Determine the frequency correction coefficient.

[0050] S3: Obtain the correction frequency based on the frequency correction coefficient and the target frequency.

[0051] S4: Design the parameters of acoustic cavity 13 according to the correction frequency.

[0052] In practical applications, the noise reduction effect of silencers designed based on the resonant frequency of server hard drives is not obvious. There is a difference between the target frequency that the silencer is expected to eliminate when it is designed and the frequency that the silencer can actually eliminate in actual use, resulting in poor noise reduction effect of the silencer.

[0053] Based on this, this application provides a sound-absorbing body design method. The method uses a frequency correction coefficient to correct the target frequency of noise absorbed by the acoustic cavity 13 of the sound-absorbing body 1. Then, the acoustic cavity 13 of the sound-absorbing body 1 is designed using the corrected frequency, so that the frequency of noise that the designed acoustic cavity 13 can actually eliminate is consistent with the target frequency. That is, through this sound-absorbing body design method, the sound-absorbing body 1 can correspond to the target frequency to be eliminated, thereby achieving a better noise reduction effect.

[0054] In addition, this also helps to standardize and modularize the silencer 1. That is to say, in actual use, the corresponding acoustic cavity 13 structure is no longer designed according to the target frequency of silencing. Instead, the main frequency band or a series of frequency bands that affect the performance of server hard drives are designed as standard silencers 1. In actual use, it is only necessary to select the corresponding standardized silencer 1 according to the target frequency of silencing required. The whole process does not require repeated design and manufacturing of silencer 1 according to the target frequency of silencing required. This simplifies the design process, process development process, production process and usage cost of silencers, realizes alternative design, and reduces the implementation cost of silencer 1.

[0055] It should be noted that this embodiment does not limit the specific method for determining the frequency correction coefficient, which can be obtained by those skilled in the art through repeated experiments.

[0056] In some embodiments, determining the frequency correction coefficient includes:

[0057] The frequency correction coefficient is determined based on the distance from the wall of the opening 14 of the acoustic cavity 13 for communicating with the outside to the edge of the sound-absorbing body 1, the number of acoustic cavities 13, and the arrangement of the acoustic cavities 13.

[0058] In other words, the magnitude of the frequency correction coefficient is related to the distance from the wall of the opening 14 of the acoustic cavity 13 for communicating with the outside to the edge of the muffler 1, the number of acoustic cavities 13, and the arrangement of the acoustic cavities 13. Therefore, when designing the muffler 1, factors such as the distance from the wall of the opening 14 of the acoustic cavity 13 for communicating with the outside to the end of the muffler 1 near the wall of the opening, the number of acoustic cavities 13, and the arrangement of the acoustic cavities 13 can be considered. The frequency correction coefficient can be determined based on the specific values ​​of the distance from the wall of the opening 14 of the acoustic cavity 13 for communicating with the outside to the edge of the muffler 1, the number of acoustic cavities 13, and the specific arrangement of the acoustic cavities 13.

[0059] It should be noted that this embodiment does not limit the specific value of the distance from the wall of the opening 14 of the acoustic cavity 13 for communicating with the outside to the edge of the sound-absorbing body 1, or the specific value of the frequency correction coefficient.

[0060] In some embodiments, the distance from the wall of the opening 14 of the acoustic cavity 13 for communicating with the outside to the end of the sound-absorbing body 1 near the wall of the opening is l1, where l1 ≥ 10 mm.

[0061] In addition, in some embodiments, the frequency correction coefficient ranges from 1.2 to 3.

[0062] For example, in some embodiments, when l1 ≥ 10 mm, the number of acoustic cavities 13 is seven, and the seven acoustic cavities 13 are uniformly distributed in a ring along the circumference of the silencer 1, the silencer is designed accordingly. After testing, the actual noise reduction frequency of the silencer is obtained. By comparing and analyzing with the target frequency, the frequency correction coefficient is obtained, where ε is taken as 2. Based on this, for the silencer of this configuration, regardless of the target frequency band, the correction frequency can be determined according to ε = 2, and then the parameters of the acoustic cavities 13 can be designed, thereby obtaining a series of standard silencers 1 corresponding to this configuration at various frequency bands.

[0063] When the configuration of the silencer changes, for example, when the number of acoustic cavities 13 is changed or the distribution of the silencer changes, the frequency correction coefficient ε can be taken in the range of 1.2 to 3.

[0064] Furthermore, it is understandable that in practical use, it is desirable for the silencer 1 to have a good noise reduction effect on noise within a certain frequency range, rather than just working on a single target frequency. Moreover, there are usually certain requirements for the target amplitude of noise that the silencer 1 can eliminate. Therefore, in some embodiments, before designing the parameters of the acoustic cavity 13 according to the correction frequency, the following steps are also included:

[0065] To obtain the target amplitude for noise cancellation in acoustic cavity 13;

[0066] Obtain the target bandwidth of the acoustic cavity 13 for absorbing noise;

[0067] Based on the correction frequency, the parameters of acoustic cavity 13 are designed, including:

[0068] The parameters of acoustic cavity 13 are designed based on the correction frequency, frequency correction coefficient, target amplitude, and target bandwidth.

[0069] In other words, in designing the parameters of the acoustic cavity 13, this embodiment considers the target amplitude and target bandwidth as design targets. Simultaneously, it uses a correction frequency to correct the target amplitude and target bandwidth, and combines this with the correction frequency obtained in the previous embodiment to jointly determine the parameters of the acoustic cavity 13. It can be seen that the silencer 1 obtained from this embodiment is applicable to specific frequency bands, has a wide range of applications, and strong versatility.

[0070] The method described above will be illustrated below with a specific embodiment.

[0071] Before designing the parameters of the acoustic cavity 13 using the above-mentioned sound-absorbing body design method, the structure of the sound-absorbing body 1 is determined to include a first wall 11 and a second wall 12 spaced apart. At least one partition is connected between the first wall 11 and the second wall 12 to form at least one acoustic cavity 13 between the first wall 11 and the second wall 12. One of the first wall 11 and the second wall 12 has an opening 14 that penetrates the wall thickness corresponding to the portion of the acoustic cavity 13. The acoustic cavity 13 is described below as a Helmholtz resonator. Further, as shown in Figure 2, the sound-absorbing body 1 is a cylindrical structure. The first wall 11 is the annular inner wall of the cylindrical structure, and the second wall 12 is the annular outer wall of the cylindrical structure. The opening 14 is located in the first wall 11. In addition, the sound-absorbing body 1 has at least one acoustic cavity 13 along its circumference. When the number of acoustic cavities 13 is two or more, all acoustic cavities 13 are evenly distributed along the circumference of the sound-absorbing body 1. For example, as shown in Figures 2 and 3, the sound-absorbing body 1 has seven independent acoustic cavities 13 along its circumference, and the dimensional parameters of each acoustic cavity 13 are the same.

[0072] In other words, as shown in Figure 3, the shape of the silencing body 1 after circumferential expansion is a cuboid. After the silencing body 1 is circumferentially expanded, the openings 14 of the acoustic cavity 13 are arranged at equal intervals along the length of the cuboid. The distance from the wall of the opening 14 facing the end of the cylindrical structure of the silencing body 1 to the corresponding end of the silencing body 1 is defined as l1, where l1 ≥ 10 mm. That is, the neck opening of the Helmholtz resonator (the opening 14 of the acoustic cavity 13) and the inlet and outlet end faces of the silencing body 1 (the two ends of the silencing body 1) must maintain a transition section of at least 10 mm. Figure 4 shows a cross-sectional view of a single acoustic cavity 13 of the silencing body 1.

[0073] Additionally, define Vr T is the volume of acoustic cavity 13. p S is the thickness of the first wall 11 (i.e., the annular inner wall of the cylindrical structure). p S1 is the area of ​​opening 14, and S1 is the surface area of ​​the first wall 11 (i.e., the annular inner wall of the cylindrical structure).

[0074] Understandably, based on the fundamental principles of Helmholtz resonators, the resonant frequency of a Helmholtz resonator is... However, it is understandable that the design of the acoustic cavity 13 of the cylindrical silencer 1 differs somewhat from that of the most basic Helmholtz resonant cavity. Therefore, if the resonant frequency formula of the Helmholtz resonant cavity is used... Designing the acoustic cavity 13 will result in certain deviations. Here, c represents the speed of sound in air, c = 343 m / s. Therefore, this application corrects the target frequency and then designs the acoustic cavity 13 according to the Helmholtz resonant frequency formula. That is, when the target frequency of the noise absorbed by the acoustic cavity 13 of the silencer 1 is f... p When the frequency correction coefficient is defined as ε, the correction frequency is εf. p Furthermore, by combining this with the formula for the resonant frequency of a Helmholtz resonant cavity, we can see that...

[0075] That is, the parameters of the acoustic cavity 13 can be designed according to the formula of the correction frequency and the resonant frequency of the Helmholtz resonant cavity.

[0076] Furthermore, if the target amplitude for noise cancellation by the acoustic cavity 13 is defined as A, and the target bandwidth for noise absorption by the acoustic cavity 13 is defined as ΔF, then the parameters of the acoustic cavity 13 can be designed according to the following formula:

[0077] Experiments have verified that when l1 ≥ 10 mm, the number of acoustic cavities 13 is seven, and the seven acoustic cavities 13 are uniformly distributed along the circumference of the sound-absorbing body 1, a frequency correction coefficient ε of 2 can enable the sound-absorbing body 1 to meet the target frequency f. p The target bandwidth ΔF and the target amplitude are A.

[0078] Therefore, the above formula can guide the structural design of the standardized and modular acoustic cavity 13 and make the design of the acoustic cavity 13 parameters more accurate.

[0079] It should be noted that this is only an example illustrating the specific way of designing the parameters of the acoustic cavity 13 using the sound-absorbing body design method disclosed in the embodiments of this application, and is not limited to the acoustic cavity 13 being a Helmholtz resonant cavity. In other embodiments, the acoustic cavity 13 can also be other cavity shapes, such as a quarter-wavelength cavity.

[0080] In addition to the above-mentioned sound-absorbing body design method, this application embodiment also provides a sound-absorbing body 1. Please refer to Figures 2 and 4. The sound-absorbing body 1 is provided with a sound cavity 13. The parameters of the sound cavity 13 are determined by the sound-absorbing body design method disclosed in any of the above embodiments, so that the sound-absorbing body 1 corresponds to a preset target frequency.

[0081] The key point of this embodiment is that the parameters of the acoustic cavity 13 of the silencer 1 are determined by the silencer design method disclosed in any of the above embodiments. This silencer design method uses a frequency correction coefficient to correct the target frequency of the noise absorbed by the acoustic cavity 13 of the silencer 1. Then, the acoustic cavity 13 of the silencer 1 is designed using the corrected frequency, ensuring that the frequency of noise actually eliminated by the designed acoustic cavity 13 matches the target frequency. In other words, through this silencer design method, the silencer 1 can correspond to its target frequency, thereby achieving a better noise reduction effect. Furthermore, making the silencer 1 correspond to its target frequency through this silencer design method also facilitates the standardization and modularization of the silencer 1. That is, the silencer 1 corresponds to a target frequency or a target frequency band. By designing different acoustic cavity 13 parameters, different silencers 1 can correspond to different target frequencies or target frequency bands. Therefore, a series of standard modular silencers 1 can be designed according to the main frequency bands or a series of frequency bands that affect the performance of server hard drives. In actual use, it is only necessary to select the corresponding standardized silencer 1 according to the target frequency to be silenced. The whole process does not require repeated design and manufacturing of the silencer 1 according to the target frequency to be silenced, which simplifies the design process, process development process, manufacturing process and usage cost of the silencer 1, realizes the alternative design, and reduces the implementation cost of the silencer 1.

[0082] It should be noted that this embodiment does not limit other structures of the silencer 1. As long as the silencer 1 has a cavity, the cavity can be determined by the silencer design method disclosed in any of the above embodiments.

[0083] As shown in Figures 2 and 4, in some embodiments, the silencer 1 includes a first wall 11 and a second wall 12 spaced apart, with at least one partition connecting the first wall 11 and the second wall 12 to form at least one acoustic cavity 13 between the first wall 11 and the second wall 12. One of the first wall 11 and the second wall 12 has an opening 14 that penetrates the wall thickness in the portion corresponding to the acoustic cavity 13. When the number of acoustic cavities 13 is at least two, all acoustic cavities 13 have the same structure and size, and all acoustic cavities 13 correspond to a preset target frequency, so that the silencer 1 can reduce noise at the target frequency.

[0084] In other words, the acoustic cavity 13 in this embodiment is a Helmholtz resonant cavity, and the parameters of the acoustic cavity 13 can be designed using the formula described above.

[0085] Furthermore, in some embodiments, the sound-absorbing body 1 is a cylindrical structure, the first wall 11 is the annular inner wall of the cylindrical structure, the second wall 12 is the annular outer wall of the cylindrical structure, and the opening 14 is provided on the first wall 11.

[0086] It is understandable that the inner hole formed by the annular inner wall of the cylindrical silencer 1 can serve as an air duct for the airflow of the server fan. When the airflow of the server fan passes through the inner hole of the cylindrical silencer 1, the noise of the airflow enters the sound cavity 13 through the opening 14 in the annular inner wall, thereby achieving noise reduction through the sound cavity 13. Therefore, the silencer 1 provided in this embodiment is particularly suitable for use on a fan bracket.

[0087] Furthermore, in some embodiments, the corresponding ends of the first wall 11 and the second wall 12 are sealed together, and the partition extends from one end of the cylindrical structure to the other end along the axial direction of the cylindrical structure. That is, in this embodiment, the partition divides the gap between the first wall 11 and the second wall 12 into at least two acoustic cavities 13 distributed circumferentially along the cylindrical structure. In this way, when airflow passes through the channel formed by the first wall 11, noise can enter each acoustic cavity 13 more evenly from the circumference of the cylindrical structure, thereby improving the uniformity and reliability of noise reduction and resulting in better noise reduction effect.

[0088] Furthermore, in some embodiments, the number of acoustic cavities 13 is at least two, and all acoustic cavities 13 are evenly distributed along the circumference of the cylindrical structure, and all openings 14 are evenly distributed along the circumference of the cylindrical structure. This allows noise passing through the channel formed by the first wall 11 to enter each acoustic cavity 13 very evenly, achieving a better noise reduction effect along the circumference of the cylindrical structure.

[0089] In addition, to facilitate the installation of the muffler 1, please refer to Figure 5. In some embodiments, the outer periphery of the second wall 12 away from the first wall 11 is provided with at least one mounting structure. The mounting structure includes a sliding groove 151 and two slots 152. The sliding groove 151 extends along the axial direction of the muffler 1 to both ends of the second wall 12. The two slots 152 are respectively provided at both ends of the second wall 12 and are respectively connected to both ends of the sliding groove 151.

[0090] In other words, this embodiment provides an installation structure on the outer periphery of the second wall 12 away from the first wall 11 to facilitate the installation of the silencer 1, thereby making it easy to place the silencer 1 at the desired location to achieve the purpose of noise reduction.

[0091] The mounting structure includes a slide 151 and slots 152 that are connected to both ends of the slide 151. Thus, when installing the muffler 1, the protrusion 22 on the mounting bracket 2 can slide relative to the slide 151, and the muffler 1 can be rotated to make the protrusion 22 engage with the corresponding slot 152, thereby achieving the installation limit of the muffler 1.

[0092] In addition, in some embodiments, when determining the size parameters of the acoustic cavity 13, the target frequency of the noise absorbed by the acoustic cavity 13 is obtained; and a frequency correction coefficient is determined; based on the frequency correction coefficient and the target frequency, a correction frequency is obtained; and based on the correction frequency, the size parameters of the acoustic cavity 13 are designed. For details, please refer to the content corresponding to the sound-absorbing body design method described above.

[0093] Furthermore, in some embodiments, before designing the size parameters of the acoustic cavity 13 according to the correction frequency, the method further includes obtaining the target amplitude of noise cancellation required by the acoustic cavity 13; and obtaining the target bandwidth of the acoustic cavity 13 for absorbing noise; and designing the size parameters of the acoustic cavity 13 according to the correction frequency, including: designing the size parameters of the acoustic cavity 13 according to the correction frequency, the frequency correction coefficient, the target amplitude and the target bandwidth.

[0094] In addition to the above-described sound-absorbing body design method and sound-absorbing body 1, this application embodiment also provides a server silencer including the sound-absorbing body 1 disclosed in the above embodiments.

[0095] The key point of this embodiment is that the server muffler uses the muffler 1 disclosed in any of the above embodiments. Since the muffler 1 corresponds to a target frequency or a target frequency band, by designing different acoustic cavity 13 parameters, different mufflers 1 can correspond to different target frequencies or target frequency bands. Therefore, a series of standard modular mufflers 1 can be designed according to the main frequency band or a series of frequency bands that affect the performance of the server hard drive. In actual use, it is only necessary to select the corresponding standardized muffler 1 according to the target frequency to be silenced. The whole process does not require repeated design and manufacturing of the muffler 1 according to the target frequency to be silenced, which simplifies the design process, process development process, manufacturing process and usage cost of the muffler 1, realizes alternative design, and reduces the implementation cost of the muffler 1. Based on the above-mentioned beneficial effects of the muffler 1, the server muffler can reduce the impact of noise on the server hard drive and can achieve standardized use at low cost.

[0096] It should be noted that this embodiment does not specifically limit the number of silencers 1; the number of silencers 1 can be one or at least two. Furthermore, this embodiment does not specifically limit the target frequency or target frequency band corresponding to the acoustic cavity 13 of the silencer 1. Those skilled in the art can select silencers 1 with acoustic cavities 13 of suitable frequencies according to actual needs. When the number of silencers 1 is at least two, the target frequencies or target frequency bands corresponding to the acoustic cavities 13 of different silencers 1 can be the same or different. When the target frequencies or target frequency bands corresponding to the acoustic cavities 13 of different silencers 1 are different, noise reduction for two or more different frequencies or different frequency bands can be achieved. In other words, in this embodiment, each individual silencer 1 can play a noise reduction role for a specific target frequency or target frequency band, and through the mutual arrangement and combination of multiple different silencers 1, noise reduction for more target frequencies or target frequency bands can be achieved.

[0097] Furthermore, referring to Figure 6, in some embodiments, the server muffler also includes a mounting bracket 2, the muffler 1 is connected to the mounting bracket 2, and the mounting bracket 2 is used for mounting on the server.

[0098] In other words, in this embodiment, the silencer 1 is installed on the server via the mounting bracket 2. The mounting bracket 2 acts as a bridge between the silencer 1 and the server as a whole. The mounting bracket 2 can provide intermediate support for the silencer 1 to be assembled into the server. After the silencer 1 is connected to the mounting bracket 2, it can be installed into the server as a whole, which facilitates the convenient assembly and disassembly of the silencer 1.

[0099] Furthermore, by designing a standardized and modular installation structure, the mounting bracket 2 can be designed as a standardized and modular structural component. This allows the mounting bracket 2 to be adapted to different silencers 1 corresponding to different target frequencies. In practical use, simply assembling the standardized silencer 1 corresponding to the target frequency or target frequency band into the mounting bracket 2 with the standardized installation structure completes the assembly of the silencer 1. When selecting different silencers 1, there is no need to change the mounting bracket 2. That is, the mounting bracket 2 in this embodiment can be used with different silencers 1 corresponding to different target frequencies, facilitating quick and easy disassembly of the silencer 1.

[0100] Furthermore, the above embodiments do not limit the specific structure of the mounting bracket 2, as long as it can enable the installation of the silencer 1.

[0101] Please continue to refer to Figure 6. In some embodiments, the mounting bracket 2 includes a mounting channel 21, and the sound-absorbing body 1 is disposed in the mounting channel 21.

[0102] In other words, in this embodiment, the silencer 1 is directly installed in the installation channel 21, and the outer peripheral surface of the silencer 1 mates with the inner peripheral surface of the installation channel 21 to achieve the installation of the silencer 1. During installation, the silencer 1 is simply inserted into the installation channel 21. The interference fit between the outer peripheral surface of the silencer 1 and the inner peripheral surface of the installation channel 21 can be used to fix the silencer 1 to the mounting bracket 2. Alternatively, other structures, such as snap-fits or locking devices, can be used to fix the silencer 1 to the mounting bracket 2.

[0103] It should be noted that the specific shape of the mounting channel 21 is not limited in this embodiment. It can be understood that the shape of the mounting channel 21 corresponds to the shape of the muffler 1. For example, when the muffler 1 is a cylindrical structure, the mounting channel 21 is a cylindrical hole, and the mounting channel 21 is used to fit with the outer circular surface of the muffler 1.

[0104] Furthermore, in some embodiments, the muffler 1 is a cylindrical structure, including a first wall 11 and a second wall 12, the second wall 12 being an annular outer wall of the cylindrical structure; one of the mounting channel 21 and the second wall 12 of the muffler 1 is provided with a slide and a first locking part communicating with the slide, the other is provided with a second locking part, the second locking part can slide along the slide and can be engaged with the first locking part by rotating the muffler 1 relative to the mounting bracket 2.

[0105] In other words, when installing the muffler 1, first align the second locking part with the slide rail and insert the muffler 1 into the installation channel 21. During this process, the second locking part slides relative to the slide rail. After the muffler 1 slides into place, rotate the muffler 1 by a certain angle so that the first locking part and the second locking part engage, thereby fixing the muffler 1 to the mounting bracket 2 and axially limiting the muffler 1 to the mounting bracket 2, preventing the muffler 1 from detaching from the mounting bracket 2 during use.

[0106] It should be noted that this embodiment does not limit the specific structure of the slide, the first locking part and the second locking part, as long as the silencing body 1 can be slidably installed and rotated relative to the mounting bracket 2.

[0107] Referring to Figures 5 and 6, in some embodiments, the outer periphery of the second wall 12 of the muffler 1 is provided with a groove 151. The groove 151 extends along the axial direction of the cylindrical structure of the muffler 1, and both ends of the groove 151 extend to both ends of the cylindrical structure of the muffler 1, so that the two ends of the groove 151 are flush with the two ends of the cylindrical structure of the muffler 1, so that the second locking part can slide into the groove 151. The first locking part is a slot 152 communicating with the groove 151. There are two first locking parts communicating with the same groove 151, and the two first locking parts are respectively communicating with the two ends of the groove 151. Correspondingly, there are also two second locking parts corresponding to the same groove 151. The second locking part is a protrusion 22. The two protrusions 22 corresponding to the same groove 151 are respectively provided at both ends of the mounting channel 21, and the two protrusions 22 corresponding to the same groove 151 are aligned along the axial direction of the mounting channel 21.

[0108] When installing the muffler 1, align the slide groove 151 with the corresponding protrusion 22 and slide the muffler 1 into the installation channel 21. During this process, the slide groove 151 slides relative to the protrusion 22 until the muffler 1 slides into place. At this time, the two protrusions 22 corresponding to the same slide groove 151 are respectively flush with the two slots 152 corresponding to the same slide groove 151. Then, the muffler 1 can be rotated so that the two protrusions 22 corresponding to the same slide groove 151 slide into the two slots 152 corresponding to the same slide groove 151, so that the protrusions 22 and the slots 152 are engaged. At this time, the two ends of the muffler 1 along the axial direction can be limited, so that the muffler 1 can no longer move axially relative to the mounting bracket 2. Therefore, the muffler 1 can be prevented from detaching from the mounting bracket 2 during use.

[0109] In other words, this embodiment makes full use of the wall thickness of the silencer 1, and facilitates the assembly of the silencer 1 by providing a sliding groove 151 and a retaining groove 152 on the outer side of the second wall 12. It can be understood that the radial depth of the sliding groove 151 and the retaining groove 152 along the second wall 12 is less than the wall thickness of the second wall 12, so as to avoid the installation structure formed by the sliding groove 151 and the retaining groove 152 interfering with the acoustic cavity 13 and damaging the performance of the acoustic cavity 13.

[0110] It should be noted that this embodiment does not limit the specific number of sliding grooves 151 provided on the outer periphery of the muffler 1. For example, the outer periphery of the muffler 1 may have only one sliding groove 151, or it may have at least two sliding grooves 151. When the outer periphery of the muffler 1 has at least two sliding grooves 151, the sliding grooves 151 are evenly distributed along the outer periphery of the muffler 1. For example, the outer periphery of the muffler 1 has three sliding grooves 151, and the three sliding grooves 151 are evenly distributed along the circumference of the muffler 1. That is, the three sliding grooves 151 are at a 120-degree angle to each other, which is equivalent to achieving three-point fixation of the muffler 1, which can improve the stability of the muffler 1's positioning. It can be understood that the slots 152 and the protrusions 22 correspond to the sliding grooves 151 respectively. After the number and position of the sliding grooves 151 are determined, the number and position of the slots 152 are also determined accordingly. Correspondingly, the number and position of the protrusions 22 are also determined accordingly. For example, when there are three slides 151, there are three pairs of slots 152. The two slots 152 of the same pair are respectively located at both ends of the corresponding slides 151 and are connected to the corresponding slides 151. The three pairs of slots 152 are evenly distributed along the circumference of the sound-absorbing body 1, that is, the included angle between different pairs of slots 152 is 120 degrees. Similarly, there are three pairs of protrusions 22. The two protrusions 22 of the same pair are correspondingly arranged along the axial direction of the mounting channel 21. The three pairs of protrusions 22 are evenly distributed along the circumference of the mounting channel 21, that is, the included angle between different pairs of protrusions 22 is 120 degrees.

[0111] It can be seen that this installation structure can achieve completely tool-free installation of the silencer 1, making the installation of the silencer 1 convenient. Moreover, it makes the silencer 1 applicable to a wider range of locations and has higher compatibility, which is conducive to the free combination of different silencers 1.

[0112] Furthermore, while utilizing the two slots 152 corresponding to the slide groove 151 to engage with the corresponding two protrusions 22 to achieve axial positioning of the muffler 1, in some embodiments, to facilitate circumferential positioning of the muffler 1, the number of slide grooves 151 is at least two, and the slots 152 corresponding to different slide grooves 151 have different orientations. That is, when the slot 152 corresponding to one of the two different slide grooves 151 faces the first rotation direction, the slot 152 corresponding to the other of the two different slide grooves 151 faces the second rotation direction, and the first rotation direction and the second rotation direction are opposite. In this way, the muffler 1 can be prevented from rotating in the first rotation direction, and at the same time, the muffler 1 can be prevented from rotating in the second rotation direction. That is, when the muffler 1 has a tendency to rotate in the first rotation direction, the slot 152 facing the second rotation direction engages with the corresponding protrusion 22 to limit its movement, preventing the muffler 1 from rotating in the first rotation direction. When the muffler 1 tends to rotate in the second rotation direction, the groove 152 facing the first rotation direction and the corresponding protrusion 22 cooperate to limit the muffler 1, preventing it from rotating in the second rotation direction, thereby achieving circumferential limitation of the muffler 1.

[0113] Further, referring to Figures 7 and 8, when the number of silencers 1 is at least two, in some embodiments, the silencers 1 are cylindrical structures, the number of silencers 1 is at least two, all silencers 1 are arranged along the axial direction of the cylindrical structure, and are all located in the installation channel 21.

[0114] In other words, when there are at least two silencers 1, all silencers 1 are connected sequentially upward along the axial direction, and all silencers 1 are sequentially installed into the installation channel 21 to achieve installation within the same installation channel 21. Understandably, in this case, when the installation structure is as described above, with the muffler 1 having a sliding groove 151 and a slot 152, and the mounting bracket 2 having a protrusion 22, then the mounting channel 21 has protrusions 22 at both ends. The distance between two corresponding protrusions 22 along the axial direction of the mounting channel 21 is equal to the sum of the axial length dimensions of all mufflers 1 minus the dimensions of the outermost slots 152 of the two outermost mufflers 1 at both ends along the axial direction. That is, the two corresponding protrusions 22 along the axial direction of the mounting channel 21 respectively engage with the outermost slots 152 of the two outermost mufflers 1 at both ends along the axial direction. By using the two corresponding protrusions 22 along the axial direction of the mounting channel 21 to limit the axial movement of the two outermost mufflers 1 at both ends along the axial direction, the axial movement of the mufflers 1 between the two outermost mufflers 1 at both ends along the axial direction is limited, thereby achieving the axial fixation of all mufflers 1.

[0115] It is understandable that the combination of two or more silencers 1 can achieve noise reduction for noise at different target frequencies.

[0116] As shown in Figures 7 and 8, in some embodiments, there are two silencers 1. The two silencers 1 are installed in the mounting channel 21 with their axial joints. One of the protrusions 22 at both ends of the mounting channel 21 engages with the slot 152 of one of the silencers 1, and the other of the protrusions 22 at both ends of the mounting channel 21 engages with the slot 152 of the other silencer 1. Thus, the two silencers 1 are clamped and fixed by the two protrusions 22 at both ends of the mounting channel 21.

[0117] In addition, in some embodiments, the number of mounting brackets 2 is at least two, all mounting brackets 2 are arranged side by side along the axis perpendicular to the silencing body 1, and all mounting brackets 2 are connected as one unit, and each mounting bracket 2 has at least one silencing body 1 in its mounting channel 21.

[0118] It is understood that in the embodiments of this application, one or all silencers 1 are arranged axially, each corresponding to the air duct of a server fan. That is, when the mounting bracket 2 is installed on the server, the mounting bracket 2 can be installed on the fan bracket, and the silencers 1 on the mounting bracket 2 can be aligned with a fan installed on the fan bracket. The airflow of a fan is reduced by one or more silencers 1 installed in the mounting channel 21 of the mounting bracket 2. Since at least two fans are usually installed on the fan bracket, two or more mounting brackets 2 can be installed respectively corresponding to the fans. That is, at least two mounting brackets 2 with silencers 1 can be used together to form a set of silencers. A single mounting bracket 2 can have one silencer 1 or two or more silencers 1. When two or more mounting brackets 2 are used together, the two or more mounting brackets 2 can be installed independently, or the two or more mounting brackets 2 can be integrated into one piece to form an integrated structural component, so as to facilitate the overall assembly and disassembly of the two or more mounting brackets 2.

[0119] In addition, to facilitate the connection between the mounting bracket 2 and the server, in some embodiments, the mounting bracket 2 is provided with a first sliding limit part 23 and a fixing part. The first sliding limit part 23 is used to slide and cooperate with the second sliding limit part of the server; the fixing part is used to fix and connect to the server.

[0120] In other words, when the mounting bracket 2 is installed on the server, firstly, the first sliding limit part 23 and the second sliding limit part are aligned, and the mounting bracket 2 is slid in the direction in which the first sliding limit part 23 and the second sliding limit part slide relative to each other. Through the sliding cooperation of the first sliding limit part 23 and the second sliding limit part, the mounting bracket 2 is slidably limited. When the mounting bracket 2 is slid into place, the fixing part is aligned with the fixing position of the server. At this time, the fixing part and the fixing position of the server are fixed. Thus, by utilizing the cooperation of the first sliding limit part 23 and the second sliding limit part, combined with the fixing of the fixing part and the fixing position of the server, the mounting bracket 2 is fixed on the server.

[0121] It should be noted that this embodiment does not limit the specific structure of the first sliding limit part 23, the fixing part and the second sliding limit part, as long as the above-mentioned installation method of the mounting bracket 2 can be achieved.

[0122] In some embodiments, the first sliding limiting part 23 is a T-shaped groove, and correspondingly, the second sliding limiting part is a T-shaped protrusion. It can be understood that the T-shaped groove is located at one end of the mounting bracket 2, that is, the T-shaped groove extends to the end face of the mounting bracket 2, forming an open groove. This facilitates the T-shaped protrusion entering the T-shaped groove, thereby achieving relative sliding between the T-shaped groove and the T-shaped protrusion. Furthermore, it can be understood that when the mounting bracket 2 slides into position, the T-shaped groove and the T-shaped protrusion cooperate to limit the mounting bracket 2 along a direction perpendicular to the mounting bracket 2.

[0123] In addition, in some embodiments, the fixing part includes a fixing plate part 24 and a fixing hole 241 provided in the fixing plate part 24. The mounting bracket 2 can be fixed to the fixed position of the server by fasteners passing through the fixing hole 241. The fasteners may include a head pressed on the fixing plate part 24.

[0124] Furthermore, it should be noted that the fixing plate portion 24 can be a protruding structure specifically provided on the mounting bracket 2, or the fixing plate portion 24 can be formed by slotting at a preset position on the mounting bracket 2.

[0125] In some embodiments, the mounting bracket 2 has a clearance groove 25 at the position corresponding to the fixing plate portion 24 to allow for the installation of fasteners. It is understood that the clearance groove 25 extends from one end of the mounting bracket 2 along the thickness direction of the mounting bracket 2 (i.e., parallel to the axis of the mounting channel 21) to the fixing plate portion 24, and the fixing plate portion 24 is formed by partially removing material from the mounting bracket 2. In some embodiments, the clearance groove 25 includes an arcuate surface, for example, a semi-circular arcuate surface, to facilitate the passage of the round head of the fastener.

[0126] Additionally, it is understood that in some embodiments, the fixing part is located at the other end of the mounting bracket 2, and the fixing part and the first sliding limiting part 23 are located at opposite ends of the mounting bracket 2. For example, as shown in FIG6, the first sliding limiting part 23 is located at the top end of the mounting bracket 2, and the fixing part is located at the bottom end of the mounting bracket 2.

[0127] Furthermore, this embodiment does not limit the specific number of the fixing part and the first sliding limiting part 23, as long as the fixing part and the first sliding limiting part 23 cooperate to achieve the installation and fixation of the mounting bracket 2. For example, in some embodiments, as shown in FIG6, there are two first sliding limiting parts 23, which are provided on the two edges of the top end of the mounting bracket 2; there are two fixing parts, which are provided on the two edges of the bottom end of the mounting bracket 2.

[0128] To reduce the weight of the mounting bracket 2, in some embodiments, the mounting bracket 2 is provided with weight-reducing holes 26. For example, in some embodiments, the mounting bracket 2 has a square or rectangular shape, a circular mounting channel 21 is provided in the middle of the mounting bracket 2, and the four corner portions of the mounting bracket 2 located between the mounting channel 21 and the edge of the mounting bracket 2 are provided with weight-reducing holes 26 that penetrate the wall thickness of the mounting bracket 2.

[0129] It should be noted that this embodiment does not specifically limit the number or shape of the weight-reducing holes 26. In some embodiments, each of the four corners of the mounting bracket 2 located between the mounting channel 21 and the edge is provided with a weight-reducing hole 26. Further, in some embodiments, the wall of the weight-reducing hole 26 near the mounting channel 21 is an arc-shaped surface, as shown in FIG6. The shape of the weight-reducing hole 26 is similar to a trapezoid to ensure the uniformity of the wall thickness of each part of the mounting bracket 2 as much as possible.

[0130] Of course, in other embodiments, the four corner portions of the mounting bracket 2 located between the mounting channel 21 and the edge portion may each be provided with at least two weight-reducing holes 26.

[0131] In addition to the aforementioned silencer design method, silencer 1, and server silencer, this application also provides a server that includes the server silencer disclosed in the above embodiments. Furthermore, the structure of other parts of the server is not limited; please refer to related technologies for the structure of other parts of the server, which will not be elaborated upon herein.

[0132] The key point of this embodiment is that the server uses the server muffler disclosed in any of the above embodiments, and the server muffler disclosed in the above embodiments uses the muffler body 1 disclosed in any of the above embodiments. Since the muffler body 1 corresponds to a target frequency or a target frequency band, by designing different acoustic cavity 13 parameters, different mufflers body 1 can correspond to different target frequencies or target frequency bands. Therefore, a series of standard modular mufflers body 1 can be designed according to the main frequency band or a series of frequency bands that affect the performance of the server hard drive. In actual use, it is only necessary to select the corresponding standardized muffler body 1 according to the target frequency to be muffled. The whole process does not require repeated design and manufacturing of the muffler body 1 according to the target frequency to be muffled, which simplifies the design process, process development process, manufacturing process and usage cost of the muffler body 1, realizes the alternative design, and reduces the implementation cost of the muffler body 1. Based on the above-mentioned beneficial effects of the muffler body 1, the hard drive performance of the server is less affected by noise, and the cost of its server muffler is low.

[0133] Corresponding to the above method embodiments, this application also provides a sound-absorbing body design device, which includes:

[0134] Memory, used to store computer programs;

[0135] A processor for executing a computer program to implement the steps of the sound-absorbing body design method disclosed in any of the above embodiments.

[0136] For a description of the sound-absorbing body design device provided in this application, please refer to the above-described embodiments of the sound-absorbing body design method; further details will not be provided here.

[0137] Corresponding to the above method embodiments, this application embodiment also provides a computer non-volatile readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the muffler design method disclosed in any of the above embodiments.

[0138] The non-volatile readable storage medium for this computer may include: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks or optical disks, and other media that can store program code.

[0139] For a description of the non-volatile readable storage medium for computers provided in this application, please refer to the above-described embodiment of the sound-absorbing body design method; further details will not be provided here.

[0140] Corresponding to the above method embodiments, this application also provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the steps of the muffler design method disclosed in any of the above embodiments.

[0141] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0142] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0143] The foregoing has provided a detailed description of the silencer design method, silencer, server silencer, server, silencer design equipment, computer non-volatile readable storage medium, and computer program product provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A sound-absorbing body, characterized in that, The system includes a first wall (11) and a second wall (12) spaced apart, with at least one partition connecting the first wall (11) and the second wall (12) to form at least one acoustic cavity (13) between the first wall (11) and the second wall (12). One of the first wall (11) and the second wall (12) has an opening (14) that penetrates the wall thickness corresponding to the portion of the acoustic cavity (13). When the number of acoustic cavities (13) is at least two, all acoustic cavities (13) have the same structure and size, and all acoustic cavities (13) correspond to a preset target frequency so that the silencer (1) can reduce noise at the target frequency.

2. The sound-absorbing body according to claim 1, characterized in that, The sound-absorbing body (1) is a cylindrical structure, the first wall (11) is the annular inner wall of the cylindrical structure, the second wall (12) is the annular outer wall of the cylindrical structure, and the opening (14) is located on the first wall (11).

3. The sound-absorbing body according to claim 2, characterized in that, The corresponding ends of the first wall (11) and the second wall (12) are sealed together, and the partition extends along the axial direction of the cylindrical structure from one end of the cylindrical structure to the other end of the cylindrical structure.

4. The sound-absorbing body according to claim 2, characterized in that, The number of acoustic cavities (13) is at least two, all of the acoustic cavities (13) are evenly distributed along the circumference of the cylindrical structure, and all the openings (14) are evenly distributed along the circumference of the cylindrical structure.

5. The sound-absorbing body according to any one of claims 1-3, characterized in that, The second wall (12) has at least one mounting structure on its outer periphery away from the first wall (11), the mounting structure comprising: The groove (151) extends along the axial direction of the sound-absorbing body (1) to both ends of the second wall (12); Two slots (152) are respectively located at both ends of the second wall (12) and are respectively connected to both ends of the slide groove (151).

6. The sound-absorbing body according to claim 5, characterized in that, The mounting structure is a plurality of structures, which are evenly distributed along the outer periphery of the second wall (12) away from the first wall (11).

7. The sound-absorbing body according to any one of claims 1-3, characterized in that, The distance from the wall of the opening (14) to the end of the sound-absorbing body (1) near the wall is ≥10mm.

8. The silencer according to any one of claims 1-3, characterized in that, When determining the size parameters of the acoustic cavity (13), the target frequency of the noise absorbed by the acoustic cavity (13) is obtained; and the frequency correction coefficient is determined; the correction frequency is obtained according to the frequency correction coefficient and the target frequency; and the size parameters of the acoustic cavity (13) are designed according to the correction frequency.

9. The sound-absorbing body according to claim 8, characterized in that, Before designing the size parameters of the acoustic cavity (13) according to the correction frequency, the method further includes obtaining the target amplitude of noise cancellation required by the acoustic cavity (13); and obtaining the target bandwidth of the acoustic cavity (13) for absorbing noise. The size parameters of the acoustic cavity (13) are designed according to the correction frequency, including: designing the size parameters of the acoustic cavity (13) according to the correction frequency, the frequency correction coefficient, the target amplitude and the target bandwidth.

10. The sound-absorbing body according to claim 9, characterized in that, The acoustic cavity (13) is a Helmholtz resonant cavity. The design of the dimensional parameters of the acoustic cavity (13) based on the correction frequency also includes: designing the dimensional parameters of the acoustic cavity (13) according to the following two formulas: Among them, f p ΔF is the target frequency of the noise absorbed by the acoustic cavity (13), ΔF is the target bandwidth of the noise absorbed by the acoustic cavity (13), A is the target amplitude of the noise to be eliminated by the acoustic cavity (13), ε is the frequency correction coefficient, and V is the target frequency of the noise absorbed by the acoustic cavity (13). r T is the volume of the acoustic cavity (13). p S is the thickness of the first wall (11). p S1 is the area of ​​the opening (14), S1 is the surface area of ​​the first wall (11), and c is the speed of sound in the air, c = 343 m / s.

11. A server silencer, characterized in that, It includes at least one silencer (1) as described in any one of claims 1-10.

12. The server silencer according to claim 11, characterized in that, It also includes a mounting bracket (2), the silencer (1) is connected to the mounting bracket (2), and the mounting bracket (2) is configured to be installed on the server.

13. The server silencer according to claim 12, characterized in that, The mounting bracket (2) includes a mounting channel (21), and the sound-absorbing body (1) is disposed in the mounting channel (21).

14. The server silencer according to claim 13, characterized in that, The sound-absorbing body (1) is a cylindrical structure, and the sound-absorbing body (1) includes a first wall (11) and a second wall (12), wherein the second wall (12) is the annular outer wall of the cylindrical structure; One of the installation channel (21) and the second wall (12) of the silencing body (1) is provided with a slide and a first locking part communicating with the slide, and the other is provided with a second locking part. The second locking part can slide along the slide and can be engaged with the first locking part by rotating the silencing body (1) relative to the installation bracket (2).

15. The server silencer according to claim 14, characterized in that, The slide is a groove (151) disposed on the outer periphery of the muffler (1). The groove (151) extends along the axial direction of the muffler (1), and both ends of the groove (151) extend to both ends of the muffler (1). The two ends of the groove (151) are flush with both ends of the muffler (1) so that the second locking part can slide into the groove (151).

16. The server silencer according to claim 15, characterized in that, The first locking part is a slot (152), and there are two first locking parts that are connected to the same slide (151). The two first locking parts are respectively connected to the two ends of the slide (151).

17. The server silencer according to claim 16, characterized in that, There are at least two slides (151). The slot (152) corresponding to one of the two different slides (151) faces the first rotation direction, and the slot (152) corresponding to the other slide (151) faces the second rotation direction. The first rotation direction and the second rotation direction are opposite.

18. The server silencer according to claim 15, characterized in that, The second locking part is a protrusion (22). There are two second locking parts corresponding to the same slide groove (151). The two protrusions (22) are respectively located at both ends of the mounting channel (21) and aligned along the axial direction of the mounting channel (21).

19. The server silencer according to claim 13, characterized in that, The silencer (1) is a cylindrical structure, and there are at least two silencers (1). All the silencers (1) are arranged along the axial direction of the cylindrical structure and are all located in the installation channel (21).

20. The server silencer according to claim 19, characterized in that, At least two of the silencers (1) correspond to different target frequencies.

21. The server silencer according to claim 13, characterized in that, There are at least two mounting brackets (2), all of which are arranged side by side along the axis perpendicular to the silencing body (1) and are connected as one unit. Each mounting bracket (2) has at least one silencing body (1) in its mounting channel (21).

22. The server silencer according to claim 12, characterized in that, The mounting bracket (2) is provided with: The first sliding limit part (23) is configured to slide in cooperation with the second sliding limit part of the server; The fixing part is configured to be fixedly connected to the server.

23. A server, characterized in that, Includes the server muffler as described in any one of claims 11-22.

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