A muffler, server muffler and server

Abstract

The present invention discloses a muffler, a server muffler and a server, comprising a first wall and a second wall arranged at intervals, at least one partition being connected between the first wall and the second wall so as to form at least one sound cavity between the first wall and the second wall, and a portion of one of the first wall and the second wall corresponding to the sound cavity being provided with an opening penetrating the wall thickness; when the number of the sound cavities is at least two, the structures and sizes of all the sound cavities are the same, and all the sound cavities correspond to a preset target frequency, so that the muffler can muffle and reduce noise of the target frequency; wherein, when determining the size parameters of the sound cavity, the target frequency of the noise to be absorbed by the sound cavity is obtained; 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 sound cavity are designed according to the correction frequency. The muffler corresponds to the target frequency to be eliminated, and has a good muffler and noise reduction effect, which is conducive to modularizing the muffler.

Description

Technical Field

[0001] The present invention relates to the technical field of server noise reduction, and more specifically, to a muffler, a server muffler and a server. Background Art

[0002] With the development of electronic information technology, servers, as the key infrastructure supporting modern data centers, are widely used in all walks of life. When the server is working, the electronic components of the server generate a lot of heat, which affects the operation of the server. Therefore, effective heat dissipation of the server is one of the key factors to ensure the stable operation of the server.

[0003] At present, server heat dissipation is mainly achieved by fan-driven air flow, so that the airflow generated by the fan can remove the heat generated by the electronic devices. However, when the fan runs at high speed, it will generate noise with multiple frequency components including aerodynamic noise, electromagnetic noise and vibration noise, which has a great impact on the performance of the server hard disk.

[0004] Therefore, how to reduce the impact of noise on the server hard disk is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a muffler, the parameters of the sound cavity of which are determined according to the above-mentioned muffler design method, which can reduce the impact of noise on the server hard disk.

[0006] Another object of the present invention is to provide a server muffler, comprising the above-mentioned muffler, which can reduce the impact of noise on the server hard disk.

[0007] Another object of the present invention is to provide a server, comprising the above-mentioned server muffler, whose hard disk performance is less affected by noise.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A muffler comprises a first wall and a second wall arranged at intervals, at least one partition is connected between the first wall and the second wall, so that at least one sound cavity is formed between the first wall and the second wall, and a portion of one of the first wall and the second wall corresponding to the sound cavity is provided with an opening penetrating through the wall thickness; when the number of the sound cavities is at least two, all the sound cavities have the same structure and size, and all the sound cavities correspond to a preset target frequency, so that the muffler can muffle and reduce noise of the target frequency;

[0010] Among them, when determining the size parameters of the acoustic cavity, the target frequency of the noise that the acoustic cavity is used to absorb 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 are designed according to the correction frequency.

[0011] On the one hand, the muffler is a cylindrical structure, the first wall is an annular inner wall of the cylindrical structure, the second wall is an annular outer wall of the cylindrical structure, and the opening is provided on the first wall.

[0012] On the other hand, the corresponding ends of the first wall and the second wall are sealed and connected, and the partition extends from one end of the cylindrical structure to the other end of the cylindrical structure along the axial direction of the cylindrical structure.

[0013] On the other hand, the number of the acoustic cavities is at least two, all the acoustic cavities are evenly distributed along the circumference of the cylindrical structure, and all the openings are evenly distributed along the circumference of the cylindrical structure.

[0014] On the other hand, at least one mounting structure is provided on the outer periphery of the second wall away from the first wall, and the mounting structure comprises:

[0015] A slide groove extending along the axial direction of the muffler to two ends of the second wall;

[0016] Two clamping grooves are respectively arranged at two ends of the second wall and are respectively communicated with two ends of the sliding groove.

[0017] On the other hand, the distance from the hole wall of the opening to the end of the muffler close to the hole wall is ≥10 mm.

[0018] On the other hand, before designing the size parameters of the acoustic cavity according to the correction frequency, it also includes obtaining the target amplitude of the noise that the acoustic cavity needs to eliminate; and obtaining the target bandwidth of the noise that the acoustic cavity is used to absorb; designing the size parameters of the acoustic cavity according to the correction frequency includes: designing the size parameters of the acoustic cavity according to the correction frequency, the frequency correction coefficient, the target amplitude and the target bandwidth.

[0019] A server silencer comprises at least one silencer of any one of the above.

[0020] On the one hand, it also includes a mounting bracket, the muffler is connected to the mounting bracket, and the mounting bracket is used to be installed on the server.

[0021] On the other hand, the mounting bracket comprises:

[0022] The muffler is installed in the installation channel.

[0023] On the other hand, the muffler is a cylindrical structure, and the muffler includes a first wall and a second wall, and the second wall is an annular outer wall of the cylindrical structure;

[0024] One of the installation channel and the second wall of the muffler is provided with a slide and a first locking portion connected to the slide, and the other is provided with a second locking portion, which can slide along the slide and can be rotated by the muffler relative to the installation bracket to engage with the first locking portion.

[0025] On the other hand, the muffler is a cylindrical structure, the number of the mufflers is at least two, all the mufflers are arranged along the axial direction of the cylindrical structure, and are all disposed in the installation channel.

[0026] On the other hand, the target frequencies corresponding to at least two of the mufflers are different.

[0027] On the other hand, the mounting bracket has:

[0028] A first sliding limit portion, used for slidingly cooperating with a second sliding limit portion of the server;

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

[0030] A server, characterized by comprising any one of the above-mentioned server silencers.

[0031] The muffler provided by the present invention has the following beneficial effects:

[0032] Since each sound cavity of the silencer corresponds to a preset target frequency, that is, the silencer corresponds to the target frequency to be eliminated, the silencer can be used to effectively eliminate noise of the target frequency, achieving a good noise reduction effect. Moreover, a silencer with this structure is also conducive to standardizing and modularizing the silencer. That is to say, in actual use, the corresponding sound cavity structure is no longer designed according to the silencer target frequency, but the main frequency band or a series of frequency bands that affect the performance of the server hard disk are designed into a standard silencer. In actual use, it is only necessary to select the corresponding standardized silencer according to the target frequency of the required silencer. The entire process does not require repeated design and manufacturing of the silencer according to the target frequency of the required silencer, which simplifies the design process, process development process, production and manufacturing process and use cost of the silencer, realizes the substitutable design, and reduces the implementation cost of the silencer.

[0033] The server silencer provided by the present invention includes the above-mentioned silencer, so the server silencer at least includes the beneficial effects of the above-mentioned silencer.

[0034] The server provided by the present invention includes the above-mentioned server silencer, so the server at least includes the beneficial effects of the above-mentioned server silencer. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0036] Figure 1 The present invention is a flowchart of a method for designing a muffler according to a specific embodiment of the present invention.

[0037] Figure 2 The figure is a schematic diagram of the structure of a muffler provided in a specific embodiment of the present invention.

[0038] Figure 3 for Figure 2 The schematic plan view of the expanded silencer is shown.

[0039] Figure 4 Schematic diagram of the cross section of the acoustic cavity of the muffler.

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

[0041] Figure 6 A schematic diagram of the structure of the mounting bracket.

[0042] Figure 7 This is an exploded diagram of two silencers and a mounting bracket when there are two silencers.

[0043] Figure 8 for Figure 7 Schematic diagram of the assembled structure.

[0044] Reference numerals:

[0045] 1-muffler; 11-first wall; 12-second wall; 13-sound cavity; 14-opening; 151-slide groove; 152-card slot; 2-mounting bracket; 21-mounting channel; 22-raised portion; 23-first sliding limit portion; 24-fixing plate portion; 241-fixing hole; 25-displacement groove; 26-weight reduction hole. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] The core of the present invention is to provide a method for designing a muffler, which can reduce the impact of noise on the server hard disk. Another core of the present invention is to provide a muffler, the parameters of whose sound cavity are determined according to the above-mentioned muffler design method, which can reduce the impact of noise on the server hard disk. Another core of the present invention is to provide a server muffler, which can reduce the impact of noise on the server hard disk. Another core of the present invention is to provide a server, whose hard disk performance is less affected by noise.

[0048] Please refer to Figure 1 , the embodiment of the present invention provides a muffler design method, which is applied to a muffler 1 (such as Figure 2 ), the muffler 1 is provided with a sound cavity 13 (such as Figure 4 As shown), the muffler design method includes steps S1-S4:

[0049] S1: Obtaining a target frequency of noise that the acoustic cavity 13 of the muffler 1 is used to absorb.

[0050] S2: Determine the frequency correction coefficient.

[0051] S3: Obtain the correction frequency according to the frequency correction coefficient and the target frequency.

[0052] S4: Design the parameters of the acoustic cavity 13 according to the correction frequency.

[0053] In actual applications, the inventors of this application found that the noise reduction effect of the silencer designed according to the resonance frequency of the server hard disk is not obvious. There is a difference between the target frequency that the silencer is expected to eliminate when designing the silencer and the frequency that the silencer can actually eliminate in actual use, which makes the noise reduction effect of the silencer poor.

[0054] Based on this, an embodiment of the present invention provides a silencer design method, which uses a frequency correction coefficient to correct the target frequency of the noise absorbed by the sound cavity 13 of the silencer 1, and then uses the corrected frequency to design the sound cavity 13 of the silencer 1, so that the frequency of the noise that can actually be eliminated by the designed sound cavity 13 is consistent with the target frequency. That is, through this silencer design method, the silencer 1 can correspond to the target frequency it wants to eliminate, thereby achieving a better noise reduction effect.

[0055] In addition, this is also conducive to standardizing and modularizing the silencer 1. That is to say, in actual use, the corresponding sound cavity 13 structure is no longer designed according to the silencer target frequency. Instead, the main frequency band or a series of frequency bands that affect the performance of the server hard disk are designed into a standard silencer 1. In actual use, it is only necessary to select the corresponding standardized silencer 1 according to the required silencer target frequency. The entire process does not require repeated design and manufacturing of the silencer 1 according to the required silencer target frequency, which simplifies the silencer design process, process development process, production and manufacturing process and use cost, realizes the substitutable design, and reduces the implementation cost of the silencer 1.

[0056] It should be noted that this embodiment does not limit the specific method for determining the frequency correction coefficient, and those skilled in the art can obtain it through repeated experiments.

[0057] In some embodiments, determining a frequency correction coefficient includes:

[0058] The frequency correction coefficient is determined according to the distance from the hole 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 the acoustic cavities 13 , and the arrangement of the acoustic cavities 13 .

[0059] That is to say, the inventors of the present application discovered that the size of the frequency correction coefficient is related to the distance from the hole wall of the opening 14 for the acoustic cavity 13 to communicate with the outside world 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 hole wall of the opening 14 for the acoustic cavity 13 to communicate with the outside world to the end of the muffler 1 close to the hole wall, 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 hole wall of the opening 14 for the acoustic cavity 13 to communicate with the outside world to the edge of the muffler 1, the number of acoustic cavities 13, and the specific arrangement of the acoustic cavities 13.

[0060] It should be noted that this embodiment does not limit the distance from the hole wall of the opening 14 of the sound cavity 13 for communicating with the outside to the edge of the muffler 1 and the specific value of the frequency correction coefficient.

[0061] In some embodiments, the distance from the hole wall of the opening 14 of the sound cavity 13 for communicating with the outside to the end of the muffler 1 close to the hole wall is , ≥10mm.

[0062] In addition, in some embodiments, the frequency correction coefficient ranges from 1.2 to 3.

[0063] For example, in some embodiments, ≥10mm, the number of sound cavities 13 is seven, and the seven sound cavities 13 are evenly distributed in a circular shape along the circumference of the muffler 1, the muffler is designed accordingly, and the actual noise reduction frequency of the muffler is obtained through testing, and the frequency correction coefficient is obtained through comparison and analysis with the target frequency, and the value of ε is 2 at this time. Based on this, for the muffler of this configuration, no matter which target frequency band, the correction frequency can be determined according to ε=2, and then the parameters of the sound cavity 13 can be designed, so that the standard muffler 1 corresponding to a series of frequency bands of this configuration can be obtained.

[0064] When the configuration of the silencer changes, for example, the number of the acoustic cavities 13 is changed to another number or the distribution of the silencer changes, the frequency correction coefficient ε can be taken within the range of 1.2 to 3.

[0065] In addition, it can be understood that in actual use, it is hoped that the muffler 1 can have a good noise reduction effect on noise within a certain frequency range, rather than just acting on a single target frequency. Moreover, usually, there are certain requirements for the target amplitude of the noise that can be eliminated by the muffler 1. Therefore, in some embodiments, before designing the parameters of the sound cavity 13 according to the correction frequency, it also includes:

[0066] Obtaining the target amplitude of the noise that needs to be eliminated by the acoustic cavity 13;

[0067] Obtaining a target bandwidth of noise that the acoustic cavity 13 is used to absorb;

[0068] According to the correction frequency, the parameters of the acoustic cavity 13 are designed, including:

[0069] The parameters of the acoustic cavity 13 are designed according to the correction frequency, the frequency correction coefficient, the target amplitude and the target bandwidth.

[0070] That is to say, in designing the parameters of the sound cavity 13, this embodiment also takes the target amplitude and the target bandwidth into consideration as design targets, and at the same time, uses the correction frequency to correct the target amplitude and the target bandwidth, and combines the correction frequency obtained in the above embodiment to jointly determine the parameters of the sound cavity 13. It can be seen that the muffler 1 obtained by this embodiment can be applied to a specific frequency band, has a wide range of application, and is highly versatile.

[0071] The method described above is introduced below with a specific embodiment.

[0072] Before designing the parameters of the sound cavity 13 using the above-mentioned muffler design method, it is determined that the structure of the muffler 1 includes a first wall 11 and a second wall 12 that are spaced apart, and at least one partition is connected between the first wall 11 and the second wall 12, so that at least one sound cavity 13 is formed between the first wall 11 and the second wall 12, and an opening 14 that penetrates the wall thickness is provided at a portion of one of the first wall 11 and the second wall 12 corresponding to the sound cavity 13. The following is an example of the sound cavity 13 being a Helmholtz resonant cavity. Further, if Figure 2 As shown, the muffler 1 is a cylindrical structure, the first wall 11 is an annular inner wall of the cylindrical structure, the second wall 12 is an annular outer wall of the cylindrical structure, and the opening 14 is provided on the first wall 11; in addition, the muffler 1 is provided with at least one sound cavity 13 along its circumference, and when the number of the sound cavities 13 is more than two, all the sound cavities 13 are evenly distributed along the circumference of the muffler 1, for example, Figure 2 and Figure 3 As shown, the muffler 1 is provided with seven independent sound cavities 13 along the circumferential direction, and the size parameters of each sound cavity 13 are the same.

[0073] That is to say, Figure 3 As shown, the shape of the muffler 1 after circumferential expansion is a cuboid. After the muffler 1 is circumferentially expanded, the openings 14 of the sound cavity 13 are arranged at equal intervals along the length direction of the cuboid. The distance from the hole wall of the end of the muffler 1 with the opening 14 facing the cylindrical structure to the corresponding end of the muffler 1 is defined as , ≥10mm, that is, the neck opening of the Helmholtz resonance cavity (the opening 14 of the sound cavity 13) and the inlet and outlet end faces of the muffler 1 (the two ends of the muffler 1) must maintain a transition section of at least 10mm. Figure 4 , which is a cross-sectional view of a single sound cavity 13 of the muffler 1 .

[0074] In addition, the definition is the volume of the acoustic cavity 13, is the thickness of the first wall 11 (i.e. the annular inner wall of the cylindrical structure), is the area of ​​the opening 14, is the surface area of ​​the first wall 11 (ie, the annular inner wall of the cylindrical structure).

[0075] It can be understood that according to the basic principle of the Helmholtz resonant cavity, the resonant frequency of the Helmholtz resonant cavity is However, it is understandable that there is a certain difference between the design of the sound cavity 13 of the cylindrical muffler 1 and the most basic Helmholtz resonant cavity. Therefore, according to the resonant frequency formula of the Helmholtz resonant cavity There will be some deviations when designing the acoustic cavity 13. Where c is the speed of sound waves in the air, c=343 m / s. Therefore, the present application corrects the target frequency and then designs the acoustic cavity 13 according to the resonant frequency formula of the Helmholtz resonant cavity. That is, when the target frequency of the noise absorbed by the acoustic cavity 13 of the muffler 1 is When the frequency correction coefficient is defined as ε, the correction frequency is , combined with the resonant frequency formula of the Helmholtz resonant cavity, we can know that

[0076]

[0077] That is, the parameters of the acoustic cavity 13 can be designed according to the formula of the correction frequency and the resonance frequency of the Helmholtz resonant cavity.

[0078] Furthermore, the target amplitude of the noise that the acoustic cavity 13 needs to eliminate is defined as A, and the target bandwidth of the noise that the acoustic cavity 13 is used to absorb is defined as , the parameters of the acoustic cavity 13 can be designed according to the following formula:

[0079]

[0080] The inventor has verified through experiments that ≥10mm, the number of the sound cavities 13 is seven, and the seven sound cavities 13 are evenly distributed along the circumference of the muffler 1, and the frequency correction coefficient ε is 2, the muffler 1 can meet the target frequency , target bandwidth And the target amplitude is A demand.

[0081] It can be seen that the above formula can guide the structural design of the standardized and modular acoustic cavity 13 and make the design of the parameters of the acoustic cavity 13 more accurate.

[0082] It should be noted that this is only an example of a specific way to design the parameters of the sound cavity 13 using the sound absorption body design method disclosed in the embodiment of the present invention, and is not limited to the sound cavity 13 being a Helmholtz resonant cavity. In other embodiments, the sound cavity 13 can also be other cavity shapes, such as a quarter-wavelength cavity.

[0083] In addition to the above-mentioned muffler design method, the embodiment of the present invention also provides a muffler 1, please refer to Figure 2 and Figure 4 The muffler 1 is provided with a sound cavity 13, and the parameters of the sound cavity 13 are determined by the muffler design method disclosed in any one of the above embodiments, so that the muffler 1 corresponds to a preset target frequency.

[0084] The key point of this embodiment is that the parameters of the sound cavity 13 of the muffler 1 are determined by the muffler design method disclosed in any of the above embodiments. Since the muffler design method uses a frequency correction coefficient to correct the target frequency of the noise absorbed by the sound cavity 13 of the muffler 1, and then uses the corrected frequency to design the sound cavity 13 of the muffler 1, the frequency of the noise that can actually be eliminated by the designed sound cavity 13 is consistent with the target frequency, that is, through the muffler design method, the muffler 1 can correspond to the target frequency to be eliminated, thereby achieving a better noise reduction effect. In addition, through the muffler design method, the muffler 1 is made to correspond to the target frequency to be eliminated, which is also conducive to standardizing and modularizing the muffler 1. That is, the silencer 1 corresponds to a target frequency or a target frequency band. By designing different sound 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 band or a series of frequency bands that affect the performance of the server hard disk. In actual use, it is only necessary to select the corresponding standardized silencer 1 according to the target frequency of the required silencer. The entire process does not require repeated design and manufacturing of the silencer 1 according to the target frequency of the required silencer, which simplifies the design process, process development process, production and manufacturing process and use cost of the silencer 1, realizes the substitutable design, and reduces the implementation cost of the silencer 1.

[0085] It should be noted that this embodiment does not limit other structures of the muffler 1. As long as the muffler 1 is provided with a cavity, the cavity can be determined by the muffler design method disclosed in any of the above embodiments.

[0086] like Figure 2 and Figure 4 As shown, in some embodiments, the muffler 1 includes a first wall 11 and a second wall 12 that are spaced apart, and at least one partition is connected between the first wall 11 and the second wall 12 to form at least one sound cavity 13 between the first wall 11 and the second wall 12, and a portion of one of the first wall 11 and the second wall 12 corresponding to the sound cavity 13 is provided with an opening 14 that passes through the wall thickness; when the number of the sound cavities 13 is at least two, all the sound cavities 13 have the same structure and size, and all the sound cavities 13 correspond to a preset target frequency, so that the muffler 1 can muffle and reduce noise of the target frequency.

[0087] That is to say, 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.

[0088] Furthermore, in some embodiments, the muffler 1 is a cylindrical structure, the first wall 11 is an annular inner wall of the cylindrical structure, the second wall 12 is an annular outer wall of the cylindrical structure, and the opening 14 is provided on the first wall 11 .

[0089] It can be understood that the inner hole formed by the annular inner wall of the cylindrical muffler 1 can be used as an air duct for the airflow of the server fan to pass through. When the airflow of the server fan passes through the inner hole of the cylindrical muffler 1, the noise of the airflow enters the sound cavity 13 from the opening 14 opened on the annular inner wall, thereby achieving the purpose of noise reduction by using the sound cavity 13. It can be seen that the muffler 1 provided in this embodiment is particularly suitable for installation on a fan bracket.

[0090] Furthermore, in some embodiments, the corresponding ends of the first wall 11 and the second wall 12 are sealed and connected, and the partition extends from one end of the cylindrical structure to the other end of the cylindrical structure along the axial direction of the cylindrical structure. That is to say, in this embodiment, the partition is used to separate the gap between the first wall 11 and the second wall 12 into at least two sound cavities 13 distributed along the circumference of the cylindrical structure, so that when the airflow passes through the channel formed by the first wall 11, the noise can enter each sound cavity 13 from the circumference of the cylindrical structure more evenly, so as to improve the uniformity and reliability of the sound reduction, so as to achieve a better effect of the sound reduction.

[0091] Furthermore, in some embodiments, the number of the sound cavities 13 is at least two, all the sound 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. This allows the noise passing through the channel formed by the first wall 11 to enter each sound cavity 13 very evenly, achieving a good sound attenuation and noise reduction effect along the circumference of the cylindrical structure.

[0092] In addition, to facilitate the installation of the silencer 1, please refer to Figure 5 In some embodiments, at least one mounting structure is provided on the outer periphery of the second wall 12 away from the first wall 11, and the mounting structure includes a slide groove 151 and two clamping grooves 152. The slide groove 151 extends along the axial direction of the muffler 1 to the two ends of the second wall 12; the two clamping grooves 152 are respectively provided at the two ends of the second wall 12 and are respectively connected to the two ends of the slide groove 151.

[0093] That is to say, in this embodiment, a mounting structure is provided on the outer periphery of the second wall 12 away from the first wall 11 to facilitate the installation of the muffler 1, thereby facilitating the placement of the muffler 1 at a desired position to achieve the purpose of noise reduction.

[0094] The mounting structure includes a slide groove 151 and a clamping groove 152 respectively connected to the two ends of the slide groove 151. In this way, when installing the silencer 1, the protrusion 22 provided on the mounting bracket 2 can be slid relative to the slide groove 151 and the silencer 1 can be rotated to make the protrusion 22 engage with the corresponding clamping groove 152, thereby realizing the installation limit of the silencer 1.

[0095] In addition, in some embodiments, when determining the size parameters of the sound cavity 13, the target frequency of the noise that the sound cavity 13 is used to absorb 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 sound cavity 13 are designed according to the correction frequency. For details, please refer to the content corresponding to the muffler design method described above.

[0096] Furthermore, in some embodiments, before designing the size parameters of the acoustic cavity 13 according to the correction frequency, it also includes obtaining the target amplitude of the noise that the acoustic cavity 13 needs to eliminate; and obtaining the target bandwidth of the noise that the acoustic cavity 13 is used to absorb; designing the size parameters of the acoustic cavity 13 according to the correction frequency includes: 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.

[0097] In addition to the above-mentioned muffler design method and muffler 1, an embodiment of the present invention further provides a server muffler including the muffler 1 disclosed in the above-mentioned embodiment.

[0098] The focus of this embodiment is that the server silencer adopts the silencer 1 disclosed in any of the above embodiments. Since the silencer 1 corresponds to a target frequency or a target frequency band, different silencers 1 can correspond to different target frequencies or target frequency bands by designing different sound cavity 13 parameters. Therefore, a series of standard modular silencers 1 can be designed according to the main frequency band or a series of frequency bands that affect the performance of the server hard disk. In actual use, it is only necessary to select the corresponding standardized silencer 1 according to the target frequency of the required silencer. The entire process does not require repeated design and manufacturing of the silencer 1 according to the target frequency of the required silencer, which simplifies the design process, process development process, production and manufacturing process and use cost of the silencer 1, realizes an alternative design, and reduces the implementation cost of the silencer 1. Based on the above beneficial effects of the silencer 1, the server silencer can reduce the impact of noise on the server hard disk, and can realize standardized use with low cost.

[0099] It should be noted that the present embodiment does not specifically limit the number of silencers 1, and the number of silencers 1 can be one or at least two. In addition, the present embodiment does not specifically limit the target frequency or target frequency band corresponding to the sound cavity 13 of the silencer 1. Those skilled in the art can select a silencer 1 with a sound cavity 13 of a suitable frequency according to actual needs. When the number of silencers 1 is at least two, the target frequencies or target frequency bands corresponding to the sound cavities 13 of different silencers 1 can be the same or different. When the target frequencies or target frequency bands corresponding to the sound cavities 13 of different silencers 1 are different, it is possible to achieve sound reduction and noise reduction for more than two different frequencies or different frequency bands. In other words, in the present embodiment, each silencer 1 monomer can play a role in sound reduction and noise reduction for a specific target frequency or target frequency band, and through the mutual arrangement and combination of multiple different silencers 1, it is possible to achieve sound reduction and noise reduction for more target frequencies or target frequency bands.

[0100] For further information, please refer to Figure 6 In some embodiments, the server silencer further includes a mounting bracket 2, the silencer body 1 is connected to the mounting bracket 2, and the mounting bracket 2 is used to be installed on the server.

[0101] That is to say, in this embodiment, the silencer 1 is installed on the server through the mounting bracket 2. The mounting bracket 2 acts as a bridge between the silencer 1 and the server. 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, the whole can be installed in the server, which facilitates the convenient disassembly and assembly of the silencer 1.

[0102] In addition, the mounting bracket 2 can be designed as a standardized and modular structural part by designing a standardized and modular mounting structure, so that the mounting bracket 2 can be adapted to different mufflers 1 corresponding to different target frequencies. In actual use, it is only necessary to assemble the standardized muffler 1 corresponding to the target frequency or target frequency band into the mounting bracket 2 with a standardized mounting structure to complete the assembly of the muffler 1. When a different muffler 1 is selected, there is no need to replace a different mounting bracket 2. That is, the mounting bracket 2 in this embodiment can be adapted to different mufflers 1 corresponding to different target frequencies, which facilitates the quick and convenient disassembly of the muffler 1.

[0103] Furthermore, the above embodiment does not limit the specific structure of the mounting bracket 2 , as long as it can achieve the installation of the muffler 1 .

[0104] Please continue to refer to Figure 6 In some embodiments, the mounting bracket 2 includes a mounting channel 21 , and the muffler 1 is disposed in the mounting channel 21 .

[0105] That is to say, in this embodiment, the muffler 1 is directly installed in the installation channel 21, and the outer circumference of the muffler 1 cooperates with the inner circumference of the installation channel 21 to achieve the installation of the muffler 1. During installation, the muffler 1 can be inserted into the installation channel 21, and the muffler 1 and the installation bracket 2 can be fixed by using the interference fit between the outer circumference of the muffler 1 and the inner circumference of the installation channel 21. Other structures such as buckles, locking members, etc. can also be used to achieve the fixation of the muffler 1 and the installation bracket 2.

[0106] It should be noted that the present embodiment does not limit the specific shape of the mounting channel 21. It is understandable 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 cooperate with the outer cylindrical surface of the muffler 1.

[0107] Further, in some embodiments, the silencer 1 is a cylindrical structure, and the silencer 1 includes a first wall 11 and a second wall 12, and the second wall 12 is an annular outer wall of the cylindrical structure; one of the mounting channel 21 and the second wall 12 of the silencer 1 is provided with a slide and a first clamping portion connected to the slide, and the other is provided with a second clamping portion, the second clamping portion can slide along the slide, and can be engaged with the first clamping portion by rotating the silencer 1 relative to the mounting bracket 2.

[0108] That is to say, when installing the silencer 1, first align the second locking portion with the slide, and insert the silencer 1 into the installation channel 21. During this process, the second locking portion slides relative to the slide. When the silencer 1 slides into place, the silencer 1 is rotated by a certain angle so that the first locking portion and the second locking portion cooperate and engage with each other, thereby achieving the fixation of the silencer 1 and the installation bracket 2, and achieving the axial limitation of the silencer 1 and the installation bracket 2, preventing the silencer 1 from detaching from the installation bracket 2 during use.

[0109] It should be noted that the present embodiment does not limit the specific structures of the slideway, the first locking portion and the second locking portion, as long as the sliding installation and rotation limiting of the muffler 1 relative to the mounting bracket 2 can be achieved.

[0110] Please combine Figure 5 and Figure 6In some embodiments, a slide groove 151 is provided on the outer periphery of the second wall 12 of the silencer 1, and the slide groove 151 extends along the axial direction of the silencer 1 of the cylindrical structure, and the two ends of the slide groove 151 extend to the two ends of the silencer 1 of the cylindrical structure, so that the two ends of the slide groove 151 are respectively flush with the two ends of the silencer 1 of the cylindrical structure, so that the second clamping portion can slide into the slide groove 151; the first clamping portion is a clamping groove 152 connected to the slide groove 151, and the number of first clamping portions connected to the same slide groove 151 is two, and the two first clamping portions are respectively connected to the two ends of the slide groove 151; correspondingly, the number of second clamping portions corresponding to the same slide groove 151 is also two, and the second clamping portion is a protrusion 22, and the two protrusions 22 corresponding to the same slide groove 151 are respectively arranged at the two ends of the installation channel 21, and the two protrusions 22 corresponding to the same slide groove 151 are aligned along the axial direction of the installation channel 21.

[0111] When installing the silencer 1, align the slide groove 151 with the corresponding protrusion 22, and slide the silencer 1 into the installation channel 21. During this process, the slide groove 151 slides relative to the protrusion 22 until the silencer 1 slides into place. At this time, the two protrusions 22 corresponding to the same slide groove 151 are respectively flush with the two card grooves 152 corresponding to the same slide groove 151. At this time, the silencer 1 can be rotated to make the two protrusions 22 corresponding to the same slide groove 151 slide into the two card grooves 152 corresponding to the same slide groove 151 respectively, so as to realize the snap-fit ​​connection between the protrusion 22 and the card groove 152. At this time, the axial limiting of the two ends of the silencer 1 can be realized, so that the silencer 1 can no longer move axially relative to the mounting bracket 2. Therefore, the silencer 1 can be prevented from detaching from the mounting bracket 2 during use.

[0112] That is to say, this embodiment makes full use of the wall thickness space of the muffler 1, and facilitates the assembly of the muffler 1 by arranging the slide groove 151 and the clamping groove 152 on the outer side of the second wall 12. It can be understood that the depth of the slide groove 151 and the clamping groove 152 along the radial direction of 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 slide groove 151 and the clamping groove 152 from interfering with the sound cavity 13 and damaging the performance of the sound cavity 13.

[0113] It should be noted that the present embodiment does not limit the specific number of the chutes 151 provided on the periphery of the muffler 1. For example, the periphery of the muffler 1 may be provided with only one chutes 151, or at least two chutes 151. When the periphery of the muffler 1 is provided with at least two chutes 151, the chutes 151 are evenly distributed along the periphery of the muffler 1. For example, the periphery of the muffler 1 is provided with three chutes 151, and the three chutes 151 are evenly distributed along the circumference of the muffler 1, that is, the three chutes 151 are at an angle of 120 degrees between each other, which is equivalent to achieving three-point fixation of the muffler 1, and can improve the stability of the muffler 1 limit. It can be understood that the slots 152 and the protrusions 22 correspond to the slots 151 respectively. After the number and position of the slots 151 are determined, the number and position of the slots 152 are also determined accordingly, and correspondingly, the number and position of the protrusions 22 are also determined accordingly. For example, when the number of the slide grooves 151 is three, the number of the slots 152 is three pairs, and the two slots 152 of the same pair are respectively arranged at the two ends of the corresponding slide groove 151 and are respectively connected to the corresponding slide groove 151, and the three pairs of slots 152 are evenly distributed along the circumference of the muffler 1, that is, the angle between the slots 152 of different pairs is 120 degrees. Similarly, the number of the protrusions 22 is three pairs, and the two protrusions 22 of the same pair are correspondingly arranged along the axial direction of the installation channel 21, and the three pairs of protrusions 22 are evenly distributed along the circumference of the installation channel 21, that is, the angle between the protrusions 22 of different pairs is 120 degrees.

[0114] It can be seen that this installation structure can realize completely tool-free installation of the silencer 1, making the installation of the silencer 1 convenient, and also making the silencer 1 more applicable and more compatible, which is conducive to realizing the free combination of different silencers 1.

[0115] In addition, while the two slots 152 corresponding to the chute 151 are respectively engaged with the corresponding two protrusions 22 to realize the axial limit of the muffler 1, in order to facilitate the circumferential limit of the muffler 1, in some embodiments, the number of the chute 151 is at least two, and the directions of the slots 152 corresponding to different chute 151 are different. That is, when the slot 152 corresponding to one of the two different chute 151 is facing the first rotation direction, the slot 152 corresponding to the other of the two different chute 151 is facing the second rotation direction, and the first rotation direction and the second rotation direction are opposite directions. In this way, the muffler 1 can be prevented from rotating in the first rotation direction, and 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 muffler 1 cannot rotate in the first rotation direction under the cooperation and limitation of the slot 152 facing the second rotation direction and the corresponding protrusion 22. When the muffler 1 has a tendency to rotate in the second rotation direction, the slot 152 facing the first rotation direction cooperates with the corresponding protrusion 22 to limit the muffler 1 so that the muffler 1 cannot rotate in the second rotation direction, thereby achieving circumferential limitation of the muffler 1.

[0116] For further information, please refer to Figure 7 and Figure 8 When the number of the silencers 1 is at least two, in some embodiments, the silencer 1 is a cylindrical structure, the number of the silencers 1 is at least two, all the silencers 1 are arranged along the axial direction of the cylindrical structure, and are all disposed in the installation channel 21.

[0117] That is, when the number of the silencers 1 is at least two, all the silencers 1 are connected in sequence along the axial direction, and all the silencers 1 are installed in sequence in the installation channel 21 to achieve installation in the same installation channel 21 . It can be understood that in this case, when the mounting structure is the above-mentioned silencer 1 provided with a slide groove 151 and a clamping groove 152, and the mounting bracket 2 is provided with a protrusion 22, then protrusions 22 are provided at both ends of the mounting channel 21, and the distance between the 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 silencers 1 minus the size of the outermost clamping grooves 152 of the two outermost silencers 1 at both ends along the axial direction, that is, the two corresponding protrusions 22 of the mounting channel 21 are respectively engaged with the outermost clamping grooves 152 of the two outermost silencers 1 at both ends along the axial direction, and the two corresponding protrusions 22 of the mounting channel 21 are used to axially limit the two outermost silencers 1 at both ends along the axial direction, thereby realizing the axial limitation of the silencer 1 between the two outermost silencers 1 at both ends along the axial direction, that is, realizing the axial fixation of all silencers 1.

[0118] It can be understood that the combination of two or more silencers 1 can achieve the purpose of silencing and reducing noises of different target frequencies.

[0119] like Figure 7 and Figure 8 As shown, in some embodiments, the number of silencers 1 is two, and the two silencers 1 are axially butt-jointedly installed in the installation channel 21, one of the protrusions 22 at both ends of the installation channel 21 is engaged with the slot 152 of one of the silencers 1, and the other of the protrusions 22 at both ends of the installation channel 21 is engaged with the slot 152 of the other silencer 1, so that the two silencers 1 are clamped and fixed by using the two protrusions 22 at both ends of the installation channel 21.

[0120] 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 an axial direction perpendicular to the silencer 1, and all mounting brackets 2 are connected together, and at least one silencer 1 is provided in the mounting channel 21 of each mounting bracket 2.

[0121] It can be understood that one silencer 1 or all silencers 1 in the embodiment of the present invention are arranged axially, 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 silencer 1 on the mounting bracket 2 can be aligned with a fan installed on the fan bracket, and the wind flow of a fan can be silenced and reduced by using one or more silencers 1 installed in the mounting channel 21 of the mounting bracket 2. At least two fans are usually installed on the fan bracket. Therefore, at this time, more than two mounting brackets 2 can be installed corresponding to the fans respectively, that is, at least two mounting brackets 2 with silencers 1 can be used in combination to form a group of silencers. A single mounting bracket 2 can have one silencer 1, or it can have more than two silencers 1. When more than two mounting brackets 2 are used in combination, the more than two mounting brackets 2 can be installed separately, or the more than two mounting brackets 2 can be integrated into one to form an integrated structural member, so as to facilitate the overall disassembly and assembly of more than two mounting brackets 2.

[0122] In addition, in order 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 portion 23 and a fixed portion, the first sliding limit portion 23 being used for sliding cooperation with the second sliding limit portion of the server; the fixed portion being used for fixed connection with the server.

[0123] That is to say, when installing the installation bracket 2 on the server, first, align the first sliding limit portion 23 with the second sliding limit portion, slide the installation bracket 2 in the direction of relative sliding of the first sliding limit portion 23 and the second sliding limit portion, and slide the installation bracket 2 through the sliding cooperation of the first sliding limit portion 23 and the second sliding limit portion. When the installation bracket 2 slides into place, the fixing portion is aligned with the fixed position of the server. At this time, the fixing portion can be fixed with the fixed position of the server, thereby utilizing the cooperation of the first sliding limit portion 23 and the second sliding limit portion, combined with the fixation of the fixing portion with the fixed position of the server, to achieve the fixation of the installation bracket 2 on the server.

[0124] It should be noted that the present embodiment does not limit the specific structures of the first sliding limit portion 23 , the fixing portion and the second sliding limit portion, as long as the above-mentioned installation method of the mounting bracket 2 can be realized.

[0125] In some embodiments, the first sliding limiter 23 is a T-shaped slot, and correspondingly, the second sliding limiter is a T-shaped protrusion. It can be understood that the T-shaped slot is provided at one end of the mounting bracket 2, that is, the T-shaped slot extends to the end surface of the mounting bracket 2 to form an open slot, so that it is convenient for the T-shaped protrusion to enter the T-shaped slot, thereby realizing relative sliding between the T-shaped slot and the T-shaped protrusion. In addition, it can be understood that when the mounting bracket 2 slides into place, the T-shaped slot cooperates with the T-shaped protrusion to limit the mounting bracket 2 in a direction perpendicular to the mounting bracket 2.

[0126] In addition, in some embodiments, the fixing portion includes a fixing plate portion 24 and a fixing hole 241 provided on the fixing plate portion 24 . The mounting bracket 2 can be fixed to a fixed position of the server by a fastener passing through the fixing hole 241 . The fastener may include a head pressed on the fixing plate portion 24 .

[0127] Furthermore, it should be noted that the fixing plate portion 24 may be a protruding structure specially provided on the mounting bracket 2 , or the fixing plate portion 24 may be formed by slotting at a preset position of the mounting bracket 2 .

[0128] In some embodiments, a clearance groove 25 is provided at a position of the mounting bracket 2 corresponding to the fixed 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 axial direction of the mounting channel 21) to the fixed plate portion 24, and the fixed 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, the clearance groove 25 includes a semicircular arcuate surface, so as to facilitate the passage of the round head of the fastener.

[0129] In addition, it can be understood that, in some embodiments, the fixing portion is disposed at the other end of the mounting bracket 2, and the fixing portion and the first sliding stop portion 23 are located at two ends of the mounting bracket 2 that are far away from each other. Figure 6 As shown, the first sliding limit portion 23 is arranged at the top end of the mounting bracket 2 , and the fixing portion is arranged at the bottom end of the mounting bracket 2 .

[0130] In addition, the present embodiment does not limit the specific number of the fixing portion and the first sliding limit portion 23, as long as the fixing portion and the first sliding limit portion 23 cooperate to achieve the installation and fixation of the mounting bracket 2. Figure 6 As shown, there are two first sliding limit parts 23 , which are arranged at two edge parts at the top end of the mounting bracket 2 ; there are two fixing parts, which are arranged at two edge parts at the bottom end of the mounting bracket 2 .

[0131] In order to reduce the weight of the mounting bracket 2, in other embodiments, the mounting bracket 2 is provided with a weight-reducing hole 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 weight-reducing holes 26 that penetrate the wall thickness of the mounting bracket 2 are provided at the four corners of the mounting bracket 2 between the mounting channel 21 and the edge of the mounting bracket 2.

[0132] It should be noted that the specific number and shape of the weight-reducing holes 26 are not specifically limited in this embodiment. In some embodiments, each of the four corners of the mounting bracket 2 between the mounting channel 21 and the edge portion is provided with a weight-reducing hole 26. Further, in some embodiments, the wall of the weight-reducing hole 26 on one side close to the mounting channel 21 is an arc-shaped surface, such as Figure 6 As shown, the shape of the lightening hole 26 is similar to a trapezoid, so as to ensure the uniformity of the wall thickness of each part of the mounting bracket 2 as much as possible.

[0133] Of course, in other embodiments, at least two weight-reducing holes 26 may be respectively provided at the four corners of the mounting bracket 2 between the mounting channel 21 and the edge portion.

[0134] In addition to the above-mentioned muffler design method, muffler 1 and server muffler, the embodiment of the present invention further provides a server, which includes the server muffler disclosed in the above-mentioned embodiment. In addition, the structure of other parts of the server is not limited. For the structure of other parts of the server, please refer to the relevant technology, which will not be repeated in this article.

[0135] The focus of this embodiment is that the server adopts the server silencer disclosed in any one of the above embodiments, and the server silencer disclosed in the above embodiments adopts the silencer 1 disclosed in any one of the above embodiments. Since the silencer 1 corresponds to a target frequency or a target frequency band, different silencers 1 can correspond to different target frequencies or target frequency bands by designing different sound cavity 13 parameters. Therefore, a series of standard modular silencers 1 can be designed according to the main frequency band or a series of frequency bands that affect the performance of the server hard disk. In actual use, it is only necessary to select the corresponding standardized silencer 1 according to the target frequency of the required silencer. The entire process does not require repeated design and manufacturing of the silencer 1 according to the target frequency of the required silencer, which simplifies the design process, process development process, production and manufacturing process and use cost of the silencer 1, realizes the substitutable design, and reduces the implementation cost of the silencer 1. Based on the above beneficial effects of the silencer 1, the hard disk performance of the server is less affected by noise, and the cost of its server silencer is low.

[0136] Corresponding to the above method embodiment, an embodiment of the present invention further provides a muffler design device, the muffler design device comprising:

[0137] Memory for storing computer programs;

[0138] A processor is used to execute the computer program to implement the steps of the muffler design method disclosed in any one of the above embodiments.

[0139] For an introduction to the silencer design device provided by the present invention, please refer to the embodiment of the silencer design method described above, and the present invention will not elaborate on it here.

[0140] Corresponding to the above method embodiments, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the muffler design method disclosed in any one of the above embodiments are implemented.

[0141] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0142] For an introduction to the computer-readable storage medium provided by the present invention, please refer to the above-mentioned embodiment of the method for designing a muffler, and the present invention will not elaborate on it here.

[0143] Corresponding to the above method embodiments, an embodiment of the present invention further provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the muffler design method disclosed in any one of the above embodiments.

[0144] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0145] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0146] The above is a detailed introduction to the silencer design method, silencer, server silencer, server, silencer design device, computer-readable storage medium and computer program product provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A muffler, characterized in that: The invention comprises a first wall (11) and a second wall (12) which are arranged at intervals, wherein at least one partition is connected between the first wall (11) and the second wall (12), so that at least one sound cavity (13) is formed between the first wall (11) and the second wall (12), and a portion of one of the first wall (11) and the second wall (12) corresponding to the sound cavity (13) is provided with an opening (14) penetrating the wall thickness; when the number of the sound cavities (13) is at least two, all the sound cavities (13) have the same structure and size, and all the sound cavities (13) correspond to a preset target frequency, so that the muffler can muffle and reduce noise of the target frequency; Wherein, when determining the size parameters of the acoustic cavity (13), the target frequency of the noise to be absorbed by the acoustic cavity (13) is obtained; and a frequency correction coefficient is determined; a correction frequency is obtained according to the frequency correction coefficient and the target frequency; a target amplitude of the noise to be eliminated by the acoustic cavity (13) is obtained; and a target bandwidth of the noise to be absorbed by the acoustic cavity (13) is obtained; the acoustic cavity (13) is a Helmholtz resonant cavity, and the size parameters of the acoustic cavity (13) are designed according to the correction frequency, the frequency correction coefficient, the target amplitude and the target bandwidth, and according to the following two formulas: ， ， in, The target frequency of the noise that the acoustic cavity (13) is used to absorb, 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, is the volume of the acoustic cavity (13), is the thickness of the first wall (11), is the area of ​​the opening (14), is the surface area of ​​the first wall (11), c is the speed of sound waves in air, c=343 m / s.

2. The muffler according to claim 1, characterized in that The muffler is a cylindrical structure, the first wall (11) is an annular inner wall of the cylindrical structure, the second wall (12) is an annular outer wall of the cylindrical structure, and the opening (14) is provided on the first wall (11).

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

4. The muffler according to claim 2, characterized in that: The number of the sound cavities (13) is at least two, all the sound 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 muffler according to any one of claims 1 to 3, characterized in that: At least one mounting structure is provided on the outer periphery of the second wall (12) away from the first wall (11), and the mounting structure comprises: A slide groove (151) extending along the axial direction of the muffler (1) to two ends of the second wall (12); Two locking grooves (152) are respectively arranged at two ends of the second wall (12), and are respectively connected to two ends of the sliding groove (151).

6. The muffler according to any one of claims 1 to 3, characterized in that: The distance from the hole wall of the opening (14) to the end of the muffler (1) close to the hole wall is ≥10 mm.

7. A server muffler, characterized in that: The method comprises at least one muffler (1) according to any one of claims 1 to 6.

8. The server muffler according to claim 7, characterized in that: It also comprises a mounting bracket (2), the muffler (1) being connected to the mounting bracket (2), and the mounting bracket (2) being used for being mounted on a server.

9. The server muffler according to claim 8, characterized in that: The mounting bracket (2) comprises: An installation channel (21), wherein the muffler (1) is arranged in the installation channel (21).

10. The server muffler according to claim 9, characterized in that: The muffler (1) is a cylindrical structure, comprising a first wall (11) and a second wall (12), wherein the second wall (12) is 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 slideway and a first locking portion connected to the slideway, and the other is provided with a second locking portion, the second locking portion being able to slide along the slideway and being able to be rotated relative to the mounting bracket (2) by the muffler (1) to engage with the first locking portion.

11. The server muffler according to claim 9, characterized in that: The silencer (1) is a cylindrical structure, the number of the silencers (1) is at least two, and all the silencers (1) are arranged along the axial direction of the cylindrical structure and are arranged in the installation channel (21).

12. The server muffler according to claim 11, characterized in that: The target frequencies corresponding to at least two of the silencers (1) are different.

13. The server muffler according to claim 8, characterized in that: The mounting bracket (2) is provided with: A first sliding limit portion (23) is used for slidingly cooperating with a second sliding limit portion of the server; The fixing part is used for fixing the connection with the server.

14. A server, characterized in that: A server silencer comprising the server silencer as described in any one of claims 7 to 13.

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