WO2025007620A1 - 一种导风降噪装置和服务器 - Google Patents

一种导风降噪装置和服务器 Download PDF

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Publication number
WO2025007620A1
WO2025007620A1 PCT/CN2024/089405 CN2024089405W WO2025007620A1 WO 2025007620 A1 WO2025007620 A1 WO 2025007620A1 CN 2024089405 W CN2024089405 W CN 2024089405W WO 2025007620 A1 WO2025007620 A1 WO 2025007620A1
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WIPO (PCT)
Prior art keywords
resonant cavity
noise reduction
noise
reduction device
wind guiding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/089405
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English (en)
French (fr)
Inventor
王羽茜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Metabrain Intelligent Technology Co Ltd
Original Assignee
Suzhou Metabrain Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Metabrain Intelligent Technology Co Ltd filed Critical Suzhou Metabrain Intelligent Technology Co Ltd
Priority to US19/116,309 priority Critical patent/US12531045B2/en
Publication of WO2025007620A1 publication Critical patent/WO2025007620A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/183—Internal mounting support structures, e.g. for supporting printed circuit boards
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20718—Forced ventilation of a gaseous coolant

Definitions

  • the present application relates to the technical field of server heat dissipation, and in particular to an air guiding and noise reducing device and a server.
  • HSA hard disk drive head suspension assembly
  • VCM voice coil motor
  • magnetic arm magnetic arm
  • head and other precision components the displacement of the entire HSA (hard disk drive head suspension assembly, including VCM (voice coil motor), magnetic arm, head and other precision components) system needs to be controlled within a few nanometers.
  • the high-performance fan in the server radiates very strong high-frequency random noise. The fan noise is transmitted to the hard disk surface through the air, causing acoustic vibration coupling inside the hard disk, further causing the resonance of the HSA system, interfering with the seek and track positioning of the head, and reducing its read and write speed.
  • the purpose of some embodiments of the present application is to propose an air guide and noise reduction device and a server.
  • it is possible to filter and eliminate sound waves transmitted from the fan to the surface of the hard disk, reduce the impact of sound waves on the performance of the hard disk, improve the performance of the hard disk, reduce the damage rate of the hard disk, and provide an efficient and stable noise reduction solution for the server.
  • one aspect of some embodiments of the present application provides a wind guiding and noise reducing device, including:
  • the air guide channel has an air inlet and an air outlet, and the area of the air inlet is smaller than the area of the air outlet;
  • the resonant cavity is connected with the wind guide channel through a plurality of first openings, so that the resonant cavity absorbs the noise propagating along the wind flow of the wind guide channel through the first openings and resonates with the noise.
  • the resonant cavity includes a first resonant cavity disposed at an upper portion of the wind guiding channel and a second resonant cavity disposed at a lower portion of the wind guiding channel.
  • the first resonant cavity includes a first curved surface portion
  • the second resonant cavity includes a second curved surface portion
  • the first curved surface portion and the second curved surface portion are arranged opposite to each other to form an air guide channel.
  • cross-sectional curves of the first curved surface portion and the second curved surface portion both conform to multi-order spline curves of cubic or higher order.
  • cross-sectional curves of the first curved surface portion and the second curved surface portion are bent in the same direction.
  • cross-sectional curves of the first curved surface portion and the second curved surface portion are bent in opposite directions.
  • the orientation angle between the air inlet and the air outlet of the air guide channel is less than or equal to 90 degrees.
  • it further includes: a separator located in the first resonant cavity and/or the second resonant cavity, the separator being used to separate the first resonant cavity and/or the second resonant cavity into a plurality of sub-cavities.
  • a plurality of U-shaped plugs are further included in the first resonant cavity and/or the second resonant cavity. Slot, U-shaped slot for securing the separator.
  • the U-shaped slots are arranged side by side along the direction of the wind flow in the parallel air guide channel.
  • a plurality of U-shaped slots are arranged side by side along the direction of the air flow in the vertical air guide channel.
  • a plurality of U-shaped slots are arranged side by side at different intervals.
  • the plurality of U-shaped slots include a plurality of slot widths.
  • the separator includes a plurality of separators having a plurality of thicknesses adapted to a plurality of groove widths.
  • the resonant cavity further includes:
  • a detachable upper cover is arranged opposite to the curved surface portion of the resonance cavity.
  • the first opening is in the shape of an elongated strip, and the opening length and opening width of the first opening are determined based on the volume of the resonance cavity to be connected, the thickness of the cavity wall, and the noise frequency to be resonated.
  • the first opening includes a plurality of circular holes, and the sizes and numbers of the plurality of circular holes are determined based on the volume of the resonance cavity to be connected thereto, the thickness of the cavity wall, and the noise frequency to be resonated.
  • it further includes:
  • the blocking piece can block a portion of the first opening to adjust the resonance frequency of the resonance cavity connected to the first opening.
  • it further includes:
  • the thickening member attached to the cavity wall of the resonant cavity is used to adjust the wall thickness of the resonant cavity to adjust the resonant frequency of the resonant cavity.
  • it further includes:
  • the filling piece filled in the resonant cavity is used to change the volume of the resonant cavity and change the resonant frequency of the resonant cavity.
  • an outer surface of the resonance cavity is further provided with avoidance grooves for avoiding adjacent components.
  • Another aspect of some embodiments of the present application further provides a server, including:
  • a wind guide and noise reduction device as in any one of the above;
  • the air inlet of the air guide and noise reduction device is arranged adjacent to the hard disk group, and the air outlet is arranged adjacent to the cooling fan.
  • the cooling fan is used to inhale gas through the air guide and noise reduction device to form wind flow and blow it to other heat dissipation components.
  • the air guiding and noise reduction device provided in some embodiments of the present application, by setting an air guiding channel with an air inlet and an air outlet, and the area of the air inlet is smaller than the area of the air outlet; and a resonance cavity arranged around the air guiding channel, wherein the air guiding channel and the resonance cavity are connected through a first opening, so that the resonance cavity absorbs the noise propagated along the wind flow in the air guiding channel through the first opening and resonates with the noise, can filter and eliminate sound waves propagated from the fan to the surface of the hard disk, can reduce the impact of sound waves on the performance of the hard disk, improve the performance of the hard disk, reduce the damage rate of the hard disk, and can provide an efficient and stable noise reduction solution for the server.
  • FIG1 is a schematic diagram of a wind guiding and noise reducing device according to some embodiments of the present application.
  • FIG2 is a schematic diagram of a hard disk backplane according to some embodiments of the present application.
  • FIG3 is a schematic diagram of a cross-section of a wind guiding and noise reduction device according to some embodiments of the present application.
  • FIG4 is a schematic diagram of an opening width according to some embodiments of the present application.
  • FIG5 is a schematic diagram of an opening length according to some embodiments of the present application.
  • FIG6 is a schematic diagram of an opening being a circular hole according to some embodiments of the present application.
  • FIG. 7 is a schematic diagram of a plurality of resonant cavities according to some embodiments of the present application.
  • an air guide and noise reduction device which is arranged between the fan and the hard disk, can be installed next to the hard disk, and can be connected and fixed to the hard disk backplane, hard disk bracket, hard disk frame or server chassis body, with the opening facing the sound source, and is used to filter and eliminate the sound waves propagating to the hard disk surface through resonance, thereby avoiding the resonance of the HSA system, and then effectively ensuring the reliability of hard disk reading and writing.
  • a wind guide noise reduction device of the present application includes: an air guide channel 100, having an air inlet 101 and an air outlet 102, and the area of the air inlet 101 is smaller than the area of the air outlet 102; and a resonant cavity 200, which is arranged around the air guide channel 100, wherein the air guide channel 100 is connected to the resonant cavity 200 through a first opening 300, so that the resonant cavity 200 absorbs the noise propagated along the wind flow of the air guide channel 100 through the first opening 300 and resonates with it.
  • the shape of the air guide and noise reduction device shown in some embodiments is a rectangular parallelepiped, which is a conventional shape, and should not limit the possibility of the air guide and noise reduction device having other shapes in specific application scenarios of the present application.
  • the preset air inlet 101, air outlet 102 and first opening 300 except for the preset air inlet 101, air outlet 102 and first opening 300, the other positions of the rectangular parallelepiped shown in FIG. 1 are all blocked, and the air guide channels 100 shown on both sides of the rectangular parallelepiped are in perspective form, and the two sides are actually also blocked.
  • the effect of the air inlet 101 of the air guide channel 100 being smaller than the air outlet 102 is, first, that it is suitable for specific application scenarios.
  • the air inlet 101 is arranged near the hard disk group, and the air outlet 102 is arranged near the server fan.
  • the server fan will draw air in the air guide channel 100 to form a wind flow; second, it helps to absorb noise.
  • the noise is mainly generated by the server fan.
  • the gradually narrowing air guide is more conducive to the noise passing through the first opening 300 on the air guide channel 100 into the corresponding resonance cavity 200 and then resonating with the resonance cavity 200 (please refer to Figure 3 for the principle), thereby changing the frequency of the noise and avoiding the resonance of the noise with the HSA system of the hard disk group.
  • the air guide channel 100 is a smooth pipe with a gradually changing cross section
  • the opening of the side close to the hard disk is narrower and faces upward (toward the upper cover), that is, the air inlet 101 is narrower and faces the upper cover
  • the opening of the side away from the hard disk is wider and faces backward (toward the fan), that is, the air outlet 102 is wider and faces the fan.
  • air is drawn into the pipe from the hard disk gap (the gap between the upper and lower hard disks or the gap between the hard disk and the upper cover), flows out of the trumpet-shaped air outlet 102 after passing through the air guide channel 100, and then flows into the fan.
  • the noise generated by the fan enters the air guide channel 100 from the air outlet 102 and propagates along the air guide channel 100 toward the air inlet 101, that is, the propagation direction of the sound wave is opposite to the wind flow direction.
  • the trumpet-shaped structure of the air outlet 102 can also collect the sound and collect the sound waves into the pipe. Openings and cavities are designed on the upper and lower side walls of the pipe, so that the air in the air guide channel 100 is connected to the cavity to form a resonant cavity 200, thereby effectively eliminating the noise.
  • the air guide noise reduction device can adapt to the external shape and assembly form. A variety of server models have a variety of installation methods. In some embodiments, the air guide and noise reduction device can be used in a 1U server.
  • the 1U server has a hard disk backplane 211 as shown in Figure 2.
  • the plane of the hard disk backplane 211 is parallel to the hard disk 212.
  • the wind direction in the 1U server flows from the hard disk to the fan, that is, the way of exhausting air, that is, it is suitable for the design of the cross-section of the air guide channel, the air inlet and the air outlet in some embodiments.
  • the air guide channel and the appearance structure can be flexibly designed.
  • the air guide and noise reduction device can also change its appearance and is suitable for any scene with ventilation and noise reduction requirements, such as air conditioning ducts, engine ducts, data center cabinets, etc. Those skilled in the art can flexibly set it according to the concept of this application.
  • a side sectional view of the basic structure of the wind guide noise reduction device of the present application is shown, and the resonant cavity 200 arranged around the wind guide channel 100 includes: a first resonant cavity 201 arranged at the upper part of the wind guide channel 100 and a second resonant cavity 202 arranged at the lower part of the wind guide channel 100.
  • the advantage of setting up multiple resonant cavities is that it can achieve resonance with noises of multiple frequencies, thereby improving the protection effect.
  • setting up resonant cavities above and below the wind guide channel can avoid noise leakage and achieve all-round isolation of noise.
  • the first resonant cavity 201 includes a first curved surface portion 210
  • the second resonant cavity 202 includes a second curved surface portion 220.
  • the first curved surface portion 210 and the second curved surface portion 220 are arranged opposite to each other to form an air guide channel 100.
  • FIG3 shows some preferred embodiments in which the resonant cavity 200 is arranged around the air guide channel 100.
  • the air guide channel 100 is completely surrounded by the curved surfaces of the upper and lower resonant cavities arranged opposite to each other. This design method is conducive to absorbing noise and resonating with it.
  • the resonant cavity and the air guide channel can be designed as two separate entities, and the two are connected by a branch pipe.
  • the cross-sectional curves of the first curved surface 210 and the second curved surface 220 both conform to a multi-order spline curve of a third order or higher.
  • the cross-sectional curves of the first curved surface 210 and the second curved surface 220 are bent in the same direction; at the air outlet 102 of the air guide channel 100, the cross-sectional curves of the first curved surface 210 and the second curved surface 220 are bent in opposite directions.
  • the above-mentioned multi-order spline curve and the bending form of the cross-sectional curve at the air outlet have the effect of making the ventilation duct have a smaller wind resistance.
  • the angle between the air inlet 101 and the air outlet 102 of the air guide channel 100 is less than or equal to 90 degrees.
  • a separator 400 which is used to separate the corresponding resonant cavity 200 into a plurality of sub-cavities.
  • One or more separators 400 can be inserted into the first resonant cavity 201 and/or the second resonant cavity 202, respectively.
  • the shape of the separator 400 needs to be adapted to the shape of the resonant cavity at the insertion position, that is, after the separator 400 is inserted into the resonant cavity, the resonant cavity can be separated into two resonant cavities, that is, the first resonant cavity 201 and the second resonant cavity 202 can be divided into a plurality of sub-resonant cavities, and the number of sub-resonant cavities corresponding to the first resonant cavity 201 and the second resonant cavity 202 can be the same or different.
  • the number of sub-resonant cavities corresponding to the first resonant cavity 201 and the second resonant cavity 202 is set to be the same, and each sub-resonant cavity has an independent first opening 300. Fan noise and other noise can enter the corresponding sub-resonant cavity through these first openings 300 on the air guide channel and then resonate with the resonant cavity, which can filter and eliminate the sound waves propagating from the fan to the hard disk surface, reduce the impact of the sound waves on the hard disk performance, and improve the hard disk performance.
  • the multiple sub-resonance cavities have different volumes.
  • the sub-resonance cavities with different volumes can eliminate sound waves of different frequencies. Noise such as fan noise is usually composed of multiple frequencies.
  • the entire resonant cavity is divided into 6 sub-resonance cavities, and the corresponding volumes are V11, V21, V31, V41, V51, V61, V71, V81, V91, V101, V112, V123, V132, V143, V154, V165, V176, V180, V190, V211, V224, V235, V247, V258, V269, V270, V280, V291, V309, V310, V321, V33 V12, V21, V22, V31, V32, the width of the opening corresponding to each sub-resonance cavity is d11, d12, d21, d22, d31, d32 respectively.
  • a plurality of independent sub-resonance cavities may be designed, each of which has an independent first opening 300 and has different shapes, volumes and curved surfaces, and the sub-resonance cavities may be combined to form a shape as shown in FIG. 1 .
  • the plurality of sub-resonance cavities are combined into a prescribed shape and installed next to the hard disk, and may be connected and fixed to a hard disk backplane, a hard disk bracket, a hard disk frame or a server chassis body, with the opening facing the direction of the sound source, so as to filter and eliminate sound waves propagating toward the surface of the hard disk through resonance.
  • a sub-resonance cavity When a sub-resonance cavity is damaged, it may be replaced separately, thereby reducing the cost of the wind guide and noise reduction device, improving the efficiency of repairing the wind guide and noise reduction device, and improving the performance of the hard disk.
  • the first resonant cavity 201 and the second resonant cavity 202 further include a plurality of U-shaped slots 500, and the U-shaped slots 500 are used to fix the separator 400.
  • the slots 500 are respectively arranged on the first resonant cavity 201 and the second resonant cavity 202, and the shape of the slots 500 is generally U-shaped, and the specific shape needs to be adapted to the cross-section of the resonant cavity at the slot position.
  • the slots 500 are used to insert the separator 400, that is, after one separator is inserted into the slot, the resonant cavity can be divided into two resonant cavities, and the two resonant cavities are sealed from each other.
  • the number and position of the slots 500 on the first resonant cavity 201 may be the same as or different from the number and position of the slots 500 on the second resonant cavity 202. In some embodiments of the present application, the number and position of the slots 500 on the first resonant cavity 201 and the second resonant cavity 202 are set to be the same. When the slots 500 on the first resonant cavity 201 and the second resonant cavity 202 are inserted into the separator 400, the first resonant cavity 201 and the second resonant cavity 202 can be divided into a plurality of sub-resonant cavities.
  • first opening 300 is set for each sub-resonant cavity.
  • Fan noise and other noise can enter the corresponding sub-resonant cavity through these first openings 300 on the air guide channel and then resonate with the resonant cavity, which can filter and eliminate the sound waves propagating from the fan to the hard disk surface, reduce the impact of the sound waves on the hard disk performance, and improve the hard disk performance.
  • the multiple sub-resonant cavities set have different volumes, and sub-resonant cavities of different volumes can eliminate sound waves of different frequencies. Fan noise and other noise are usually composed of multiple frequencies. Therefore, different sub-resonant cavities can more effectively eliminate noise of different frequencies.
  • a plurality of U-shaped slots are arranged side by side along the direction of the wind flow of the vertical wind guide channel.
  • the slots are respectively arranged on the first resonant cavity and the second resonant cavity, and the specific shape needs to be adapted to the cross section of the resonant cavity at the slot position.
  • the slot is used to insert a separator, that is, after a separator is inserted into the slot, the resonant cavity can be divided into two resonant cavities, and the two resonant cavities are sealed with each other.
  • the slots can be set to multiple, each slot has a certain interval in the vertical direction, the number and position of the slots on the first resonant cavity can be the same as or different from the number and position of the slots on the second resonant cavity, when the separator is inserted into the slot, the first resonant cavity and the second resonant cavity can be divided into multiple sub-resonant cavities parallel to each other, and at the same time, an independent opening needs to be set for each sub-resonant cavity, that is, one opening is set for one sub-resonant cavity, and the noise such as fan noise can enter the corresponding sub-resonant cavity through these openings on the wind guide channel and then resonate with the resonant cavity, which can filter and eliminate the sound waves propagating from the fan to the hard disk surface, can reduce the impact of the sound waves on the hard disk performance, and improve the hard disk performance.
  • the multiple sub-resonance cavities have different volumes.
  • the sub-resonance cavities with different volumes can eliminate sound waves of different frequencies. Noise such as fan noise is usually composed of a combination of multiple frequencies. Therefore, different sub-resonance cavities can eliminate noise of different frequencies more effectively.
  • a plurality of U-shaped slots are arranged side by side along the direction of the wind flow in the parallel wind guide channel.
  • the slots are respectively arranged on the first resonant cavity and the second resonant cavity, and the specific shape needs to be adapted to the cross-section of the resonant cavity at the slot position.
  • the slot is used to insert a separator, that is, after a separator is inserted into the slot, the resonant cavity can be divided into two resonant cavities, and the two resonant cavities are sealed from each other.
  • the slots can be arranged in a plurality, and each slot has a certain interval in the horizontal direction.
  • the number and position of the slots on the first resonant cavity may be the same as or different from the number and position of the slots on the second resonant cavity.
  • the first resonant cavity and the second resonant cavity can be divided into a plurality of parallel sub-resonant cavities.
  • an independent opening needs to be set for each sub-resonant cavity, that is, one opening is set for one sub-resonant cavity, and the position of the opening can be set as needed.
  • Fan noise and other noise can enter the corresponding sub-resonant cavity through these openings on the air guide channel and then resonate with the resonant cavity, which can filter and eliminate the sound waves propagating from the fan to the hard disk surface, reduce the impact of sound waves on hard disk performance, and improve hard disk performance.
  • the multiple sub-resonant cavities set have different volumes, and sub-resonant cavities of different volumes can eliminate sound waves of different frequencies. Fan noise and other noise are usually composed of multiple frequencies, so different sub-resonant cavities can eliminate noise of different frequencies more effectively.
  • a plurality of U-shaped slots are arranged side by side at different spacings.
  • the slots on the first resonant cavity and the second resonant cavity may have different spacings, and the number of slots may be different.
  • the slots on the first resonant cavity and the second resonant cavity may have the same spacing, and the number of slots may be the same.
  • the slots on the first resonant cavity and the second resonant cavity have different spacings, and the number of slots may be the same.
  • the slots on the first resonant cavity have the same spacing
  • the slots on the second resonant cavity have the same spacing
  • the spacing of the slots on the first resonant cavity is different from the spacing of the slots on the second resonant cavity
  • the number of slots on the first resonant cavity and the second resonant cavity is also different. Therefore, the spacing and number of slots can be set as needed.
  • multiple U-shaped slots include multiple slot widths to accommodate separators of different thicknesses.
  • the width of the slots can be set as needed, and the slots are used to insert separators.
  • the resonant cavity can be divided into multiple sub-resonant cavities.
  • the multiple sub-resonant cavities have different volumes.
  • Sub-resonant cavities with different volumes can eliminate sound waves of different frequencies. Noise such as fan noise is usually composed of multiple frequencies. Therefore, different sub-resonant cavities can more effectively eliminate noise of different frequencies. Therefore, when separators are inserted into slots of different widths, the volume of the corresponding sub-resonant cavity can be changed to eliminate noise of different frequencies.
  • the separator has a shape adapted to the corresponding resonant cavity, and has separators of multiple thicknesses adapted to multiple slot widths.
  • the resonant cavity further comprises:
  • a removable upper cover is arranged opposite to the curved surface of the resonance cavity. That is, a removable upper cover is arranged on the side opposite to the curved surface of the first resonance cavity, and a removable upper cover is arranged on the side opposite to the curved surface of the second resonance cavity.
  • the removable upper cover can be removed, and then the corresponding separator can be installed.
  • the installation of the separator can be completed without removing the entire air guide and noise reduction structure. After the air guide and noise reduction structure has been used for a certain period of time, dust and foreign matter will enter the resonance cavity. After accumulating to a certain extent, the dust will enter the air duct through the opening, and then enter the chassis, which may cause damage to the chassis. Therefore, the removable upper cover can be removed regularly to clean the inside of the resonance cavity to reduce the risk of damage to the chassis.
  • the first opening is in the shape of a long strip, and the opening length and opening width of the first opening are determined by the volume of the resonant cavity to be connected, the thickness of the cavity wall, and the noise frequency to be resonated.
  • the resonant frequency of the resonant cavity 200 is Wherein T is the thickness of the resonance cavity 200, V is the volume of the resonance cavity 200, f is the resonance frequency, c is the speed of sound in the air which is related to the temperature and density, d is the width of the first opening 300, and L is the length of the first opening 300. Therefore, the values of the width and length of the opening can be obtained according to the frequency of the noise to be resonated, and the length and width of the opening can be set according to the frequency of the fan noise measured in advance and the parameters of the resonance cavity 200.
  • the first opening is composed of a plurality of circular holes 303, and the size and number of the plurality of circular holes 303 are determined by the volume of the resonant cavity 200 to be connected, the thickness of the cavity wall, and the noise frequency to be resonated.
  • the resonant frequency of the resonant cavity 200 is Wherein T is the thickness of the resonance cavity 200, V is the volume of the resonance cavity 200, f is the resonance frequency, c is the speed of sound in the air which is related to the temperature and density, and S is the total area of the circular holes 303.
  • the total area of the circular holes 303 can be obtained according to the frequency of the noise to be resonated, and the number of the circular holes 303 and the area of each circular hole 303 can be set according to the value of the total area.
  • the number of the circular holes 303 and the area of each circular hole can be set according to the frequency of the fan noise measured in advance and the parameters of the resonance cavity 200.
  • the blocking member can block part of the first opening 300 to adjust the resonant frequency of the resonant cavity connected to the first opening 300.
  • the resonant frequency of the resonant cavity is Where T is the thickness of the resonant cavity, V is the volume of the resonant cavity, f is the resonant frequency, c is the speed of sound in the air, which is related to temperature and density, d is the width of the opening, and L is the length of the opening. Therefore, the width and length of the opening can be adjusted according to the frequency of the noise to better eliminate the noise.
  • the fan and other components in the chassis may be replaced. After the replacement of the components, the frequency of the noise generated will change, and the original resonant cavity cannot eliminate the noise well. Therefore, the plugging piece can be installed at the first opening 300 to adjust the size of the opening, that is, the resonant frequency of the resonant cavity can be changed. The size of the plugging piece can be set according to the frequency of the new noise.
  • the thickening member attached to the cavity wall of the resonant cavity 200 is used to adjust the wall thickness of the resonant cavity to adjust the resonant frequency of the resonant cavity.
  • the resonant frequency of the resonant cavity is Where T is the thickness of the resonant cavity, V is the volume of the resonant cavity, f is the resonant frequency, c is the speed of sound in the air, which is related to temperature and density, d is the width of the opening, and L is the length of the opening. Therefore, the thickness of the resonant cavity can be adjusted according to the frequency of the noise to better eliminate the noise.
  • the fan and other components in the chassis may be replaced. After the replacement of the components, the frequency of the noise generated will change.
  • the thickening part can be installed inside the resonant cavity to adjust the thickness of the resonant cavity, that is, the resonant frequency of the resonant cavity can be changed.
  • the thickness and size of the thickening part can be set according to the frequency of the new noise.
  • the filling member filled in the resonant cavity is used to fill the interior of the resonant cavity to change the volume of the resonant cavity and change the resonant frequency of the resonant cavity.
  • the resonant frequency of the resonant cavity is Where T is the thickness of the resonant cavity, V is the volume of the resonant cavity, f is the resonant frequency, c is the speed of sound in the air, which is related to temperature and density, d is the width of the opening, and L is the length of the opening. Therefore, the volume of the resonant cavity can be adjusted according to the frequency of the noise to better eliminate the noise.
  • the fan and other components in the chassis may be replaced.
  • the frequency of the noise generated will change.
  • the original resonant cavity cannot eliminate the noise well. Therefore, fillers can be installed inside the resonant cavity to adjust the volume of the resonant cavity, that is, the resonant frequency of the resonant cavity can be changed.
  • the thickness and size of the filler can be set according to the frequency of the new noise.
  • the outer surface of the resonance cavity is also provided with avoidance grooves for avoiding adjacent components.
  • the wind guide and noise reduction structure must cooperate with the backplane and chassis structure around the hard disk. Therefore, avoidance grooves for avoiding obstacles can be designed on the outer surface of the resonance cavity to avoid interference with the connector on the backplane. For other electronic devices not shown in the figure, avoidance is also used in the same way. This application does not limit the number, size and shape of the avoidance grooves, which can be set according to actual needs.
  • the sound waves propagating from the fan to the hard disk surface can be filtered and eliminated, the impact of the sound waves on the hard disk performance can be reduced, the hard disk performance can be improved, the hard disk damage rate can be reduced, and an efficient and stable noise reduction solution can be provided for the server.
  • a server including:
  • the air inlet of the air guide and noise reduction device is arranged adjacent to the hard disk group, and the air outlet is arranged adjacent to the cooling fan.
  • the cooling fan is used to inhale gas through the air guide and noise reduction device to form wind flow and blow it to other heat dissipation components.
  • the wind guiding noise reduction device includes: an wind guiding channel 100, having an air inlet 101 and an air outlet 102, and the area of the air inlet 101 is smaller than the area of the air outlet 102; and a resonance cavity 200, the resonance cavity 200 is arranged around the wind guiding channel 100, wherein the wind guiding channel 100 and the resonance cavity 200 are connected through a first opening 300, so that the resonance cavity 200 absorbs the noise propagated along the wind flow of the wind guiding channel 100 through the first opening 300 and resonates with it.
  • the shape of the air guide and noise reduction device shown in some embodiments is a rectangular parallelepiped, which is a conventional shape, and it should not limit the possibility of the air guide and noise reduction device having other shapes in specific application scenarios of the present application.
  • the preset air inlet 101, air outlet 102 and first opening 300 except for the preset air inlet 101, air outlet 102 and first opening 300, the other positions of the rectangular parallelepiped shown in FIG. 1 are all blocked, and the air guide channels 100 shown on both sides of the rectangular parallelepiped are in perspective form, and the two sides are actually also blocked.
  • the effect of the air inlet 101 of the air guide channel 100 being smaller than the air outlet 102 is, first, suitable for specific application scenarios.
  • the air inlet is set near the hard disk group, and the air outlet is set near the server fan.
  • the server fan will extract the air in the air guide channel to form a wind flow; second, it helps to absorb noise.
  • the noise is mainly generated by the server fan.
  • the gradually narrowing air guide is more conducive to the noise entering the corresponding resonant cavity through the first opening on the air guide channel and then resonating with the resonant cavity (see Figure 3 for the principle), thereby changing the frequency of the noise, thereby avoiding the resonance of the noise with the HSA system of the hard disk group.
  • the air guide channel is a smooth and gradually changing cross-section pipe
  • the opening on the side close to the hard disk is narrower and faces upward (the upper cover direction), that is, the air inlet opening is narrower and faces the upper cover direction
  • the opening on the side away from the hard disk is wider and faces backward (the fan direction), that is, the air outlet opening is wider and faces the fan direction.
  • the noise generated by the fan enters the air guide channel from the air outlet, propagates along the air guide channel toward the air inlet, that is, the propagation direction of the sound wave is opposite to the direction of the wind flow.
  • the trumpet-shaped structure of the air outlet can also play a role in collecting sound, gathering the sound waves into the pipe. Openings and cavities are designed on the upper and lower side walls of the pipe, so that the air in the air guide channel is connected to the cavity, forming a resonant cavity 200, thereby effectively eliminating the noise.
  • the air guide and noise reduction device can adapt to a variety of server models by modifying the appearance and assembly form, and has a variety of installation methods.
  • the resonance cavity 200 arranged around the wind guiding channel 100 includes: a first resonance cavity 201 arranged at the upper part of the wind guiding channel 100 and a second resonance cavity 202 arranged at the lower part of the wind guiding channel 100.
  • the advantage of setting multiple resonance cavities is that it is possible to achieve resonance with noises of multiple frequencies, thereby improving the protection effect.
  • setting resonance cavities above and below the wind guiding channel can avoid the leakage of noise and achieve all-round isolation of noise.
  • the first resonance cavity 201 includes a first curved surface portion 210
  • the second resonance cavity 202 includes a second curved surface portion 220.
  • the first curved surface portion 210 and the second curved surface portion 220 are arranged relative to each other to form the wind guiding channel 100.
  • FIG3 shows some embodiments in which a resonance cavity 200 is arranged around the wind guiding channel 100.
  • the wind guiding channel 100 is completely composed of the resonance cavities above and below it.
  • the relatively arranged curved surfaces are surrounded, and this design method is conducive to absorbing noise and resonating with it.
  • the resonance cavity and the air guide channel can be designed as two separate entities, and the two are connected through a branch pipe.
  • the cross-sectional curves of the first curved surface 210 and the second curved surface 220 both conform to a multi-order spline curve of a third order or higher.
  • the cross-sectional curves of the first curved surface 210 and the second curved surface 220 are bent in the same direction; at the air outlet 102 of the air guide channel 100, the cross-sectional curves of the first curved surface 210 and the second curved surface 220 are bent in opposite directions.
  • the above-mentioned multi-order spline curve and the bending form of the cross-sectional curve at the air outlet have the effect of making the ventilation duct have a smaller wind resistance.
  • the server of the present application can filter and eliminate the sound waves propagating from the fan to the surface of the hard disk, that is, reduce the impact of the sound waves on the hard disk performance, improve the hard disk performance, reduce the hard disk failure rate, and can provide an efficient and stable noise reduction solution for the server.

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Abstract

一种导风降噪装置和服务器，导风降噪装置包括：导风通道（100），具有入风口（101）以及出风口（102），且入风口（101）面积小于出风口（102）面积；谐振腔（200），谐振腔（200）通过若干第一开口（300）与导风通道（100）连通，以使得谐振腔（200）通过第一开口（300）吸纳沿导风通道（100）风流传播的噪声并与之发生谐振。该装置能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能、降低硬盘损坏率，能够为服务器提供高效、稳定的降噪方案。

Description

一种导风降噪装置和服务器
相关申请的交叉引用
本申请要求于2023年07月04日提交中国专利局，申请号为202310811211.2，申请名称为“一种导风降噪装置和服务器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及服务器散热技术领域，尤其涉及一种导风降噪装置和服务器。
背景技术
随着大容量机械硬盘的技术演进，其存储密度越来越大，磁道宽度已经以纳米计数，在磁头执行寻道和定道工作时需要准确定位在指定的磁道上空，意味着整个HSA(硬盘驱动器头悬臂组件，含VCM(音圈电机)、磁臂、磁头等多个精密部件)系统的位移需要控制在几纳米以内。服务器内高性能风扇辐射出非常强烈的高频随机噪音，风扇的噪音通过空气传播到硬盘表面，引起硬盘内部的声振耦合，进一步引起了HSA系统的共振，干扰磁头的寻道、定道，使其读写速率下降。
发明内容
有鉴于此，本申请一些实施例的目的在于提出一种导风降噪装置和服务器，通过使用本申请的技术方案，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能、降低硬盘损坏率，能够为服务器提供高效、稳定的降噪方案。
基于上述目的，本申请的一些实施例的一个方面提供了一种导风降噪装置，包括：
导风通道，具有入风口以及出风口，且入风口面积小于出风口面积；
谐振腔，谐振腔通过若干第一开口与导风通道连通，以使得谐振腔通过第一开口吸纳沿导风通道风流传播的噪声并与之发生谐振。
根据本申请的一些实施例，谐振腔包括设置于导风通道上部的第一谐振腔与设置于导风通道下部的第二谐振腔。
根据本申请的一些实施例，第一谐振腔包括第一曲面部，第二谐振腔包括第二曲面部，第一曲面部与第二曲面部相对设置以形成导风通道。
根据本申请的一些实施例，第一曲面部和第二曲面部的截面曲线均符合三次或更高次的多阶样条曲线。
根据本申请的一些实施例，在导风通道的入风口处，第一曲面部和第二曲面部的截面曲线朝同向弯曲。
根据本申请的一些实施例，在导风通道的出风口处，第一曲面部和第二曲面部的截面曲线朝相反方向弯曲。
根据本申请的一些实施例，导风通道的入风口和出风口的朝向夹角小于等于90度。
根据本申请的一些实施例，还包括：位于第一谐振腔和/或第二谐振腔内的分隔片，分隔片用于将第一谐振腔和/或第二谐振腔分隔为多个子腔。
根据本申请的一些实施例，还包括位于第一谐振腔和/或第二谐振腔内的多个U型插 槽，U型插槽用于固定分隔片。
根据本申请的一些实施例，U型插槽并排沿平行导风通道风流的方向设置。
根据本申请的一些实施例，多个U型插槽并排沿垂直导风通道风流的方向设置。
根据本申请的一些实施例，多个U型插槽以不同间距并排设置。
根据本申请的一些实施例，多个U型插槽包含多种槽宽。
根据本申请的一些实施例，分隔片包括具有适应多种槽宽的多个厚度的多个分隔片。
根据本申请的一些实施例，谐振腔还包括：
可拆卸的上盖，可拆卸的上盖与谐振腔的曲面部相对设置。
根据本申请的一些实施例，第一开口呈长条形，第一开口的开口长度和开口宽度基于其所要连通的谐振腔的体积、腔体壁厚度以及所要发生谐振的噪声频率确定。
根据本申请的一些实施例，第一开口包括多个圆孔，多个圆孔的大小及数量基于其所要连通的谐振腔的体积、腔体壁厚度以及所要发生谐振的噪声频率确定。
根据本申请的一些实施例，还包括：
封堵件，封堵件可封闭部分第一开口以调整第一开口连通的谐振腔的谐振频率。
根据本申请的一些实施例，还包括：
附着于谐振腔的腔壁的加厚件，用于调整谐振腔的壁厚以调整谐振腔的谐振频率。
根据本申请的一些实施例，还包括：
填充于谐振腔内的填充件，用于改变谐振腔的体积并改变谐振腔的谐振频率。
根据本申请的一些实施例，谐振腔的外表面还设置有用于避让邻接部件的避位槽。
本申请的一些实施例的另一个方面，还提供了一种服务器，包括：
如上述任意一项的一种导风降噪装置；
散热风扇；以及
硬盘组；
其中，导风降噪装置的入风口与硬盘组相邻设置，出风口与散热风扇相邻设置，散热风扇用于通过导风降噪装置吸入气体形成风流并吹向其它散热件。
本申请具有以下有益技术效果：本申请一些实施例提供的导风降噪装置，通过设置具有入风口以及出风口的导风通道，且入风口面积小于出风口面积；以及围绕导风通道设置的谐振腔，其中，导风通道与谐振腔通过第一开口连通，以使得谐振腔通过第一开口吸纳沿导风通道风流传播的噪声并与之发生谐振的技术方案，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能、降低硬盘损坏率，能够为服务器提供高效、稳定的降噪方案。
附图说明
为了更清楚地说明本申请一些实施例或现有技术中的技术方案，下面将对一些实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得另一些实施例。
图1为根据本申请一些实施例的导风降噪装置的示意图；
图2为根据本申请一些实施例的硬盘背板的示意图；
图3为根据本申请一些实施例的导风降噪装置的剖面的示意图；
图4为根据本申请一些实施例的开口宽度的示意图；
图5为根据本申请一些实施例的开口长度的示意图；
图6为根据本申请一些实施例的开口为圆孔的示意图；
图7为根据本申请一些实施例的多个谐振腔的示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚明白，以下结合具体一些实施例，并参照附图，对本申请一些实施例进一步详细说明。
需要说明的是，本申请一些实施例中所有使用“第一”和“第二”的表述均是为了区分两个相同名称非相同的实体或者非相同的参量，可见“第一”“第二”仅为了表述的方便，不应理解为对本申请一些实施例的限定，后续一些实施例对此不再一一说明。
为了避免风扇噪声所引起的HSA系统共振，本申请提出了一种导风降噪装置，该导风降噪装置设置于风扇与硬盘之间，可以安装在硬盘旁边，并可以与硬盘背板、硬盘支架、硬盘框或者服务器机箱主体连接固定，开口朝向声源方向，用于通过谐振作用将传播向硬盘表面的声波过滤、消除，从而避免引起HSA系统的共振，进而能够有效保证硬盘读写的可靠性。以下将结合附图对本申请的技术方案进行更为详细的阐述。
请参见图1，其示出了本申请的导风降噪装置的基本结构。在一些实施例中，本申请的一种导风降噪装置包括：导风通道100，具有入风口101以及出风口102，且入风口101面积小于出风口102面积；以及谐振腔200，谐振腔200围绕导风通道100设置，其中，导风通道100与谐振腔200通过第一开口300连通，以使得谐振腔200通过第一开口300吸纳沿导风通道100风流传播的噪声并与之发生谐振。
本领域技术人员应当理解，一些实施例示出的导风降噪装置的形状为长方体，是一种常规形状，其不应限制本申请在具体应用场景中导风降噪装置具有其它形状的可能性。此外，图1示出的长方体除预设的入风口101、出风口102及第一开口300以外，其它位置均封堵设计，长方体两侧示出的导风通道100为透视形式，两侧实际为也封堵设计。导风通道100的入风口101面积小于出风口102面积的作用是，第一，适合具体应用场景，在实际应用中入风口101设置于硬盘组附近，出风口102设置于服务器风扇附近，服务器风扇将抽取导风通道100内的空气以形成风流；第二，有助于吸纳噪声，噪声主要由服务器风扇产生，在其沿导风通道100的风流逆向传播的过程中，逐渐变窄的导风导通更有利于噪声通过导风通道100上的第一开口300进入对应的谐振腔200内进而与谐振腔200发生谐振(原理请参见图3)，从而改变噪声的频率，进而避免噪声与硬盘组的HSA系统发生共振。在一些实施例中，导风通道100是一个平滑且截面渐变的管道，靠近硬盘的一侧开口较窄，方向向上(上盖方向)，即入风口101开口较窄且朝向上盖方向，远离硬盘的一侧开口较宽，方向向后(风扇方向)，即出风口102开口较宽且朝向风扇方向。当风扇工作时，空气从硬盘缝隙(上下两层硬盘之间的缝隙或者硬盘与上盖之间的缝隙)中被抽入管道内，经过导风通道100后在类似喇叭形的出风口102流出，再流入风扇内部。而风扇产生的噪声从出风口102进入导风通道100，沿导风通道100朝向入风口101传播，即声波的传播方向与风流方向相反，出风口102的喇叭形结构除了导流之外，还可起到收声的效果，将声波收拢到管道内，在管道的上、下两层侧壁上设计了开口以及空腔，使得导风通道100内的空气与空腔连通，形成谐振腔200，进而对噪音进行有效的消除。导风降噪装置可通过修改外形装配形态适应 多种服务器机型，具有多种安装方式。在一些实施例中，导风降噪装置可以使用在1U服务器中，1U服务器具有如图2所示的硬盘背板211，该硬盘背板211平面与硬盘212平行，该1U服务器中的风流方向从硬盘流向风扇，即抽风的方式，即适用于一些实施例中导风通道截面、入风口和出风口的设计，对于不同的硬盘背板、风流方向，还可以再灵活设计导风通道以及外形结构。该导风降噪装置也可以变换外形，适用在任何有通风且降噪需求的场景内，如空调管道、发动机管道、数据中心机柜等等，本领域技术人员可以根据本申请的构思进行灵活设置。
在本申请的一些实施例中，结合图1并参见图3，其示出了本申请的导风降噪装置基本结构的侧剖视图，围绕导风通道100设置的谐振腔200包括：设置于导风通道100上部的第一谐振腔201与设置于导风通道100下部的第二谐振腔202。设置多个谐振腔的好处在于能够实现与多个频率的噪声发生谐振，从而提升保护效果，此外，在导风通道上下均设置谐振腔能够避免噪声的外泄，能够实现对噪声的全方位隔离。
在本申请的一些实施例中，继续参见图3，第一谐振腔201包括第一曲面部210，第二谐振腔202包括第二曲面部220，第一曲面部210与第二曲面部220相对设置以形成导风通道100。图3示出的是一种围绕导风通道100设置谐振腔200的优选一些实施例，在本一些实施例中，导风通道100完全由其上下方谐振腔相对设置的曲面围成，这种设计方式有利于吸纳噪声并与之发生谐振。在一些其它一些实施例中，谐振腔与导风通道可以设计为两个单独的个体，并通过分支管道连通二者。
在本申请的一些实施例中，继续参见图3，第一曲面部210和第二曲面部220的截面曲线均符合三次或更高次的多阶样条曲线。在进一步的一些实施例中，在导风通道100的入风口101处，第一曲面部210和第二曲面部220的截面曲线朝同向弯曲；在导风通道100的出风口102处，第一曲面部210和第二曲面部220的截面曲线朝相反方向弯曲。具体的，上述多阶样条曲线和风口处截面曲线的弯曲形式设置具有使得通风管道具有较小的风阻的作用。
在本申请的一些实施例中，导风通道100的入风口101和出风口102的朝向夹角小于等于90度。对入风口101和出风口102朝向进行限定，能够减少出风口的风再次通过入风口进入导风通道中，并且减少风在导风通道中流通的阻碍，保证风流的顺畅，保证风的流速满足要求。
在本申请的一些实施例中，参考图7，还包括：分隔片400，分隔片400用于将对应的谐振腔200分隔为多个子腔。可以在第一谐振腔201和/或第二谐振腔202中分别插入一个或多个分隔片400，分隔片400的形状需要与插入位置的谐振腔的形状相适应，即分隔片400插入谐振腔后可以将谐振腔分隔成两个谐振腔，即可以将第一谐振腔201和第二谐振腔202分成多个子谐振腔，第一谐振腔201和第二谐振腔202对应的子谐振腔的数量可以相同也可以不同。在本申请的一些实施例中，第一谐振腔201和第二谐振腔202对应的子谐振腔的数量设置为相同，每个子谐振腔都具有独立的第一开口300，风扇噪音等噪音通过导风通道上的这些第一开口300可以进入对应的子谐振腔内进而与谐振腔发生谐振，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能。设置的多个子谐振腔具有不同的体积，不同体积的子谐振腔可以消除不同频率的声波，而风扇噪音等噪音通常由多个频率组合而成，因此不同子谐振腔200可以对不同频率的噪音进行更有效的消除。在图7的示例中，将谐振腔整体分为6个子谐振腔，对应的体积分别为V11、 V12、V21、V22、V31、V32，每个子谐振腔对应的开口的宽度分别为d11、d12、d21、d22、d31、d32。
在一些实施例中，可以设计多个独立的子谐振腔，每个子谐振腔具有独立的第一开口300，且具有不同的形状、体积以及曲面，并且子谐振腔可以进行组合，组合后需要形成如图1所示的形状，在使用时，将多个子谐振腔组合成规定的形状后安装在硬盘旁边，并可以与硬盘背板、硬盘支架、硬盘框或者服务器机箱主体连接固定，开口朝向声源方向，用于通过谐振作用将传播向硬盘表面的声波过滤、消除，在某个子谐振腔损坏时可以进行单独的更换，降低导风降噪装置的成本，可以提高导风降噪装置维修的效率，提高硬盘性能。
在本申请的一些实施例中，如图7所示，第一谐振腔201与第二谐振腔202内还包括多个U型插槽500，U型插槽500用于固定分隔片400。插槽500分别设置在第一谐振腔201和第二谐振腔202上，插槽500的形状大体上呈U型，具体的形状需要与插槽位置处的谐振腔的截面相适应，该插槽500用于插入分隔片400，即1个分隔片插入插槽后可以将谐振腔分割成两个谐振腔，且两个谐振腔彼此之间密封。第一谐振腔201上插槽500的数量和位置与第二谐振腔202上插槽500的数量和位置可以相同也可以不同，在本申请的一些实施例中，第一谐振腔201和第二谐振腔202上插槽500的数量和位置设置为相同。当第一谐振腔201和第二谐振腔202上的插槽500插入分隔片400后，即可以将第一谐振腔201和第二谐振腔202分成多个子谐振腔，还需要对每个子谐振腔设置独立的第一开口300，即一个子谐振腔设置一个第一开口300，风扇噪音等噪音通过导风通道上的这些第一开口300可以进入对应的子谐振腔内进而与谐振腔发生谐振，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能。设置的多个子谐振腔具有不同的体积，不同体积的子谐振腔可以消除不同频率的声波，而风扇噪音等噪音通常由多个频率组合而成，因此不同子谐振腔可以对不同频率的噪音进行更有效的消除。
在本申请的一些实施例中，多个U型插槽并排沿垂直导风通道风流的方向设置。插槽分别设置在第一谐振腔和第二谐振腔上，具体的形状需要与插槽位置处的谐振腔的截面相适应，该插槽用于插入分隔片，即1个分隔片插入插槽后可以将谐振腔分割成两个谐振腔，且两个谐振腔彼此之间密封。插槽可以设置为多个，每个插槽在竖直方向上具有一定间隔，第一谐振腔上插槽的数量和位置与第二谐振腔上插槽的数量和位置可以相同也可以不同，当分隔片插入插槽中后，可以将第一谐振腔和第二谐振腔分成上下平行的多个子谐振腔，同时还需要对每个子谐振腔设置独立的开口，即一个子谐振腔设置一个开口，风扇噪音等噪音通过导风通道上的这些开口可以进入对应的子谐振腔内进而与谐振腔发生谐振，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能。设置的多个子谐振腔具有不同的体积，不同体积的子谐振腔可以消除不同频率的声波，而风扇噪音等噪音通常由多个频率组合而成，因此不同子谐振腔可以对不同频率的噪音进行更有效的消除。
在本申请的一些实施例中，多个U型插槽并排沿平行导风通道风流的方向设置。同样地，插槽分别设置在第一谐振腔和第二谐振腔上，具体的形状需要与插槽位置处的谐振腔的截面相适应，该插槽用于插入分隔片，即1个分隔片插入插槽后可以将谐振腔分割成两个谐振腔，且两个谐振腔彼此之间密封。插槽可以设置为多个，每个插槽在水平方向上具有一定间隔，第一谐振腔上插槽的数量和位置与第二谐振腔上插槽的数量和位置可以相同也可以不 同，当分隔片插入插槽中后，可以将第一谐振腔和第二谐振腔分成左右平行的多个子谐振腔，同时还需要对每个子谐振腔设置独立的开口，即一个子谐振腔设置一个开口，开口的位置可以根据需要进行设定，风扇噪音等噪音通过导风通道上的这些开口可以进入对应的子谐振腔内进而与谐振腔发生谐振，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能。设置的多个子谐振腔具有不同的体积，不同体积的子谐振腔可以消除不同频率的声波，而风扇噪音等噪音通常由多个频率组合而成，因此不同子谐振腔可以对不同频率的噪音进行更有效的消除。
在本申请的一些实施例中，多个U型插槽以不同间距并排设置。第一谐振腔和第二谐振腔上的插槽可以具有不同的间距，插槽的数量也可以不同。在一些实施例中，第一谐振腔和第二谐振腔上的插槽可以具有相同的间距，插槽的数量也可以相同。在一些实施例中，第一谐振腔和第二谐振腔上插槽具有不同的间距，插槽的数量可以相同。在一些实施例中，第一谐振腔上插槽具有相同的间距，第二谐振腔上插槽具有相同的间距，但第一谐振腔上插槽的间距与第二谐振腔上插槽的间距不同，第一谐振腔和第二谐振腔上插槽的数量也不同。因此，插槽的间距和数量可以根据需要进行设定。
在本申请的一些实施例中，多个U型插槽包含多种槽宽以适应不同厚度的分隔片。可以根据需要设置插槽的宽度，插槽用于插接分隔片，分隔片插入插槽后可以将谐振腔分隔为多个子谐振腔，多个子谐振腔具有不同的体积，不同体积的子谐振腔可以消除不同频率的声波，而风扇噪音等噪音通常由多个频率组合而成，因此不同子谐振腔可以对不同频率的噪音进行更有效的消除，因此当不同宽度的插槽中插入分隔片后可以改变对应的子谐振腔的体积以对不同频率的噪声进行消除。
在本申请的一些实施例中，分隔片具有与对应谐振腔相适应的形状，且具有适应多种槽宽的多个厚度的分隔片。
在本申请的一些实施例中，谐振腔还包括：
可拆卸的上盖，可拆卸的上盖与谐振腔的曲面部相对设置。即在第一谐振腔的曲面相对的一面设置可拆卸的上盖，在第二谐振腔的曲面相对的一面设置可拆卸的上盖，当需要在谐振腔中插入分隔片时，可以将可拆卸的上盖拆下，然后安装对应的分隔片，无需将整个导风降噪结构全部拆下就可以完成分隔片的安装。在导风降噪结构使用一定时间后，谐振腔内部会进入灰尘异物，灰尘在积累到一定程度后还会通过开口进入到风道中，进而进入机箱内部，可能会对机箱造成损坏，因此可以定时将可拆卸上盖拆下，对谐振腔内部进行清洁，降低对机箱造成损坏的风险。
在本申请的一些实施例中，第一开口呈长条形，第一开口的开口长度和开口宽度由其所要连通的谐振腔的体积、腔体壁厚度以及所要发生谐振的噪声频率确定。如图4和5所示，谐振腔200的谐振频率为其中T为谐振腔200的厚度，V为谐振腔200的体积，f为谐振频率，c为空气中声速，该声速与温度和密度相关，d为第一开口300的宽度，L为第一开口300的长度，因此可以根据要发生谐振的噪声的频率来得到开口的宽度和长度的值，可以根据提前测量的风扇噪声的频率以及谐振腔200的参数设置开口的长度和宽度。
在本申请的一些实施例中，如图6所示，第一开口由多个圆孔303组成，多个圆孔303的大小及数量由其所要连通的谐振腔200的体积、腔体壁厚度以及所要发生谐振的噪声频率 确定。谐振腔200的谐振频率为其中T为谐振腔200的厚度，V为谐振腔200的体积，f为谐振频率，c为空气中声速，该声速与温度和密度相关，S为圆孔303的总面积，因此可以根据要发生谐振的噪声的频率来得到圆孔303的总面积的值，并根据总面积的值设定圆孔303的数量和每个圆孔303的面积，可以根据提前测量的风扇噪声的频率以及谐振腔200的参数设置圆孔303的数量和每个圆孔的面积。
在本申请的一些实施例中，还包括：
封堵件，封堵件可封闭部分第一开口300以调整第一开口300连通的谐振腔的谐振频率。谐振腔的谐振频率为其中T为谐振腔的厚度，V为谐振腔的体积，f为谐振频率，c为空气中声速，该声速与温度和密度相关，d为开口的宽度，L为开口的长度，因此可以根据噪声的频率来调整开口的宽度和长度以更好的对噪声进行消除。机箱中的风扇等部件可能会出现更换的情况，更换部件后，其产生的噪声的频率会发生改变，原来的谐振腔不能很好的对噪声进行消除，因此可以将封堵件安装到第一开口300处可以调整开口的大小，即可以改变谐振腔的谐振频率，封堵件的大小可以根据新的噪声的频率进行设定。
在本申请的一些实施例中，还包括：
附着于谐振腔200的腔壁的加厚件，用于调整谐振腔的壁厚以调整谐振腔的谐振频率。谐振腔的谐振频率为其中T为谐振腔的厚度，V为谐振腔的体积，f为谐振频率，c为空气中声速，该声速与温度和密度相关，d为开口的宽度，L为开口的长度，因此可以根据噪声的频率来调整谐振腔的厚度以更好的对噪声进行消除。机箱中的风扇等部件可能会出现更换的情况，更换部件后，其产生的噪声的频率会发生改变，原来的谐振腔不能很好的对噪声进行消除，因此可以将加厚件安装到谐振腔内部以调整谐振腔的厚度，即可以改变谐振腔的谐振频率，加厚件的厚度和大小可以根据新的噪声的频率进行设定。
在本申请的一些实施例中，还包括：
填充于谐振腔内的填充件，用于填充于谐振腔内部以改变谐振腔的体积并改变谐振腔的谐振频率。谐振腔的谐振频率为其中T为谐振腔的厚度，V为谐振腔的体积，f为谐振频率，c为空气中声速，该声速与温度和密度相关，d为开口的宽度，L为开口的长度，因此可以根据噪声的频率来调整谐振腔的体积以更好的对噪声进行消除。机箱中的风扇等部件可能会出现更换的情况，更换部件后，其产生的噪声的频率会发生改变，原来的谐振腔不能很好的对噪声进行消除，因此可以将填充物安装到谐振腔内部以调整谐振腔的体积，即可以改变谐振腔的谐振频率，填充物的厚度和大小可以根据新的噪声的频率进行设定。
在本申请的一些实施例中，谐振腔的外表面还设置有用于避让邻接部件的避位槽。导风降噪结构要配合硬盘周围的背板、机箱结构，因此可以在谐振腔的外表面设计用于躲避障碍物的避位槽，可避免与背板上连接器的干涉，对于其它图上未体现的电子器件，也用相同的方式避位。本申请不对避位槽的数量、大小和形状进行限定，可以根据实际需要自行设定。
通过使用本申请的方案，能够过滤和消除从风扇传播向硬盘表面的声波，能够减少声波对硬盘性能的影响，提升硬盘性能、降低硬盘损坏率，能够为服务器提供高效、稳定的降噪方案。
基于上述目的，本申请的一些实施例的第二个方面，提出了一种服务器，包括：
上述导风降噪装置；
散热风扇；以及
硬盘组；
其中，导风降噪装置的入风口与硬盘组相邻设置，出风口与散热风扇相邻设置，散热风扇用于通过导风降噪装置吸入气体形成风流并吹向其它散热件。
如图1所示，导风降噪装置包括：导风通道100，具有入风口101以及出风口102，且入风口101面积小于出风口102面积；以及谐振腔200，谐振腔200围绕导风通道100设置，其中，导风通道100与谐振腔200通过第一开口300连通，以使得谐振腔200通过第一开口300吸纳沿导风通道100风流传播的噪声并与之发生谐振。
同样地，应当理解，一些实施例示出的导风降噪装置的形状为长方体，是一种常规形状，其不应限制本申请在具体应用场景中导风降噪装置具有其它形状的可能性。此外，图1示出的长方体除预设的入风口101、出风口102及第一开口300以外，其它位置均封堵设计，长方体两侧示出的导风通道100为透视形式，两侧实际为也封堵设计。导风通道100的入风口101面积小于出风口102面积的作用是，第一，适合具体应用场景，在实际应用中入风口设置于硬盘组附近，出风口设置于服务器风扇附近，服务器风扇将抽取导风通道内的空气以形成风流；第二，有助于吸纳噪声，噪声主要由服务器风扇产生，在其沿导风通道的风流逆向传播的过程中，逐渐变窄的导风导通更有利于噪声通过导风通道上的第一开口进入对应的谐振腔内进而与谐振腔发生谐振(原理请参见图3)，从而改变噪声的频率，进而避免噪声与硬盘组的HSA系统发生共振。在一些实施例中，导风通道是一个平滑且截面渐变的管道，靠近硬盘的一侧开口较窄，方向向上(上盖方向)，即入风口开口较窄且朝向上盖方向，远离硬盘的一侧开口较宽，方向向后(风扇方向)，即出风口开口较宽且朝向风扇方向。当风扇工作时，空气从硬盘缝隙(上下两层硬盘之间的缝隙或者硬盘与上盖之间的缝隙)中被抽入管道内，经过导风通道后在类似喇叭形的出风口流出，再流入风扇内部。而风扇产生的噪声从出风口进入导风通道，沿导风通道朝向入风口传播，即声波的传播方向与风流方向相反，出风口的喇叭形结构除了导流之外，还可起到收声的效果，将声波收拢到管道内，在管道的上、下两层侧壁上设计了开口以及空腔，使得导风通道内的空气与空腔连通，形成谐振腔200，进而对噪音进行有效的消除。导风降噪装置可通过修改外形装配形态适应多种服务器机型，具有多种安装方式。
参考图3，围绕导风通道100设置的谐振腔200包括：设置于导风通道100上部的第一谐振腔201与设置于导风通道100下部的第二谐振腔202。设置多个谐振腔的好处在于能够实现与多个频率的噪声发生谐振，从而提升保护效果，此外，在导风通道上下均设置谐振腔能够避免噪声的外泄，能够实现对噪声的全方位隔离。在本申请的一些实施例中，继续参见图3，第一谐振腔201包括第一曲面部210，第二谐振腔202包括第二曲面部220，第一曲面部210与第二曲面部220相对设置以形成导风通道100。图3示出的是一种围绕导风通道100设置谐振腔200的一些实施例，在一些实施例中，导风通道100完全由其上下方谐振腔 相对设置的曲面围成，这种设计方式有利于吸纳噪声并与之发生谐振。在另一些实施例中，谐振腔与导风通道可以设计为两个单独的个体，并通过分支管道连通二者。
在本申请的一些实施例中，继续参见图3，第一曲面部210和第二曲面部220的截面曲线均符合三次或更高次的多阶样条曲线。在进一步的一些实施例中，在导风通道100的入风口101处，第一曲面部210和第二曲面部220的截面曲线朝同向弯曲；在导风通道100的出风口102处，第一曲面部210和第二曲面部220的截面曲线朝相反方向弯曲。具体的，上述多阶样条曲线和风口处截面曲线的弯曲形式设置具有使得通风管道具有较小的风阻的作用。
本申请的服务器可以将从风扇传播向硬盘表面的声波过滤、消除，即减少了声波对硬盘性能的影响，提升硬盘性能、降低硬盘坏率，能够为服务器提供高效、稳定的降噪方案。
以上是本申请公开的示例性一些实施例，但是应当注意，在不背离权利要求限定的本申请一些实施例公开的范围的前提下，可以进行多种改变和修改。根据这里描述的公开一些实施例的方法权利要求的功能、步骤和/或动作不需以任何特定顺序执行。此外，尽管本申请一些实施例公开的元素可以以个体形式描述或要求，但除非明确限制为单数，也可以理解为多个。
应当理解的是，在本文中使用的，除非上下文清楚地支持例外情况，单数形式“一个”旨在也包括复数形式。还应当理解的是，在本文中使用的“和/或”是指包括一个或者一个以上相关联地列出的项目的任意和所有可能组合。
上述本申请一些实施例公开一些实施例序号仅仅为了描述，不代表一些实施例的优劣。
所属领域的普通技术人员应当理解：以上任何一些实施例的讨论仅为示例性的，并非旨在暗示本申请一些实施例公开的范围(包括权利要求)被限于这些例子；在本申请一些实施例的思路下，以上一些实施例或者另一些实施例中的技术特征之间也可以进行组合，并存在如上的本申请一些实施例的不同方面的许多其它变化，为了简明它们没有在细节中提供。因此，凡在本申请一些实施例的精神和原则之内，所做的任何省略、修改、等同替换、改进等，均应包含在本申请一些实施例的保护范围之内。

Claims (22)

  1. 一种导风降噪装置，其特征在于，包括：
    导风通道，具有入风口以及出风口，且入风口面积小于出风口面积；
    谐振腔，所述谐振腔通过若干第一开口与所述导风通道连通，以使得所述谐振腔通过所述第一开口吸纳沿所述导风通道风流传播的噪声，并与所述沿所述导风通道风流传播的噪声发生谐振。
  2. 根据权利要求1所述的导风降噪装置，其特征在于，所述谐振腔包括设置于所述导风通道上部的第一谐振腔与设置于所述导风通道下部的第二谐振腔。
  3. 根据权利要求2所述的导风降噪装置，其特征在于，所述第一谐振腔包括第一曲面部，所述第二谐振腔包括第二曲面部，所述第一曲面部与所述第二曲面部相对设置以形成所述导风通道。
  4. 根据权利要求3所述的导风降噪装置，其特征在于，所述第一曲面部和所述第二曲面部的截面曲线均符合三次或更高次的多阶样条曲线。
  5. 根据权利要求4所述的导风降噪装置，其特征在于，在所述导风通道的入风口处，所述第一曲面部和所述第二曲面部的截面曲线朝同向弯曲。
  6. 根据权利要求5所述的导风降噪装置，其特征在于，在所述导风通道的出风口处，所述第一曲面部和所述第二曲面部的截面曲线朝相反方向弯曲。
  7. 根据权利要求6所述的导风降噪装置，其特征在于，所述导风通道的入风口和出风口的朝向夹角小于等于90度。
  8. 根据权利要求2所述的导风降噪装置，其特征在于，还包括：位于所述第一谐振腔和/或第二谐振腔内的分隔片，所述分隔片用于将所述第一谐振腔和/或第二谐振腔分隔为多个子腔。
  9. 根据权利要求8所述的导风降噪装置，其特征在于，还包括位于所述第一谐振腔和/或第二谐振腔内的多个U型插槽，所述U型插槽用于固定所述分隔片。
  10. 根据权利要求9所述的导风降噪装置，其特征在于，所述U型插槽沿平行所述导风通道风流的方向设置。
  11. 根据权利要求9所述的导风降噪装置，其特征在于，所述U型插槽沿垂直所述导风通道风流的方向设置。
  12. 根据权利要求9所述的导风降噪装置，其特征在于，多个所述U型插槽以不同间距并排设置。
  13. 根据权利要求11所述的导风降噪装置，其特征在于，多个所述U型插槽包含多种槽宽。
  14. 根据权利要求13所述的导风降噪装置，其特征在于，所述分隔片包括具有适应所述多种槽宽的多个厚度的多个分隔片。
  15. 根据权利要求14所述的导风降噪装置，其特征在于，所述谐振腔还包括：
    可拆卸的上盖，所述可拆卸的上盖与所述谐振腔的曲面部相对设置。
  16. 根据权利要求1所述的导风降噪装置，其特征在于，所述第一开口呈长条形，所述第一开口的开口长度和开口宽度基于所述第一开口所要连通的谐振腔的体积、腔体壁厚度以及所要发生谐振的噪声频率确定。
  17. 根据权利要求1所述的导风降噪装置，其特征在于，所述第一开口包括多个圆孔，所述多个圆孔的大小及数量基于所述第一开口所要连通的谐振腔的体积、腔体壁厚度以及所要发生谐振的噪声频率确定。
  18. 根据权利要求16或17所述的导风降噪装置，其特征在于，还包括：
    封堵件，所述封堵件可封闭部分所述第一开口以调整所述第一开口连通的谐振腔的谐振频率。
  19. 根据权利要求16或17所述的导风降噪装置，其特征在于，还包括：
    附着于所述谐振腔的腔壁的加厚件，用于调整谐振腔的壁厚以调整所述谐振腔的谐振频率。
  20. 根据权利要求16或17所述的导风降噪装置，其特征在于，还包括：
    填充于所述谐振腔内的填充件，用于改变所述谐振腔的体积并改变所述谐振腔的谐振频率。
  21. 根据权利要求1所述的导风降噪装置，其特征在于，所述谐振腔的外表面还设置有用于避让邻接部件的避位槽。
  22. 一种服务器，其特征在于，包括：
    如权利要求1-21任意一项所述的导风降噪装置；
    散热风扇；以及
    硬盘组；
    其中，所述导风降噪装置的入风口与所述硬盘组相邻设置，出风口与所述散热风扇相邻设置，所述散热风扇用于通过所述导风降噪装置吸入气体形成风流并吹向其它散热件。
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