CN220539970U - Noise reduction structure and electronic equipment - Google Patents

Abstract

The application provides a noise reduction structure and electronic equipment. The noise reduction structure includes: the first sound-absorbing cavity is provided with a first inlet and a first outlet, and is internally provided with a first sound-absorbing material which is used for absorbing noise entering from the first inlet; the second silencing cavity is provided with a second inlet, the inner wall of the second silencing cavity is provided with a sound insulation coating, and the sound insulation coating in the second silencing cavity is used for reflecting noise entering from the second inlet; the noise reduction structure can be assembled in the electronic equipment, the first inlet and the second inlet are close to the air outlet of the cooling fan, and the first outlet is opposite to the opening of the hard disk backboard in the electronic equipment.

Description

Noise reduction structure and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a noise reduction structure and electronic equipment.

Background

The electronic equipment (such as a host computer, a server and the like of a computer) is internally provided with the cooling fan, and the cooling fan can convey air flow into the electronic equipment after working, so that high-temperature air in the electronic equipment is dispersed out through cooling holes formed in a shell of the electronic equipment, and the temperature in the electronic equipment is reduced, thereby reducing the probability of faults of electronic components in the electronic equipment due to overhigh temperature.

When the temperature in the electronic equipment is higher, the rotating speed of the cooling fan is faster and faster, and the rising of the rotating speed brings larger noise, so that the use effect of a user is poor, and meanwhile, the noise is generated and accompanied with vibration, and the vibration can cause the hard disk to deviate from a preset read-write track when being read and written.

Disclosure of Invention

In view of this, the present application provides a noise reduction structure and an electronic device, and the technical scheme is as follows:

in a first aspect, embodiments of the present application provide a noise reduction structure, including: the first sound-absorbing cavity is provided with a first inlet and a first outlet, and is internally provided with a first sound-absorbing material which is used for absorbing noise entering from the first inlet; the second silencing cavity is provided with a second inlet, the inner wall of the second silencing cavity is provided with a sound insulation coating, and the sound insulation coating in the second silencing cavity is used for reflecting noise entering from the second inlet; the noise reduction structure can be assembled in the electronic equipment, the first inlet and the second inlet are close to the air outlet of the cooling fan, and the first outlet is opposite to the opening of the hard disk backboard in the electronic equipment.

In some embodiments, a muffler pipe is disposed in the first muffler chamber, and the muffler pipe extends in a curved manner from the first inlet to the first outlet.

In some embodiments, an inner wall of the second silencing cavity opposite to the second inlet is protruding in an arc shape towards the direction of the second inlet.

In some embodiments, the first sound-deadening chamber and the second sound-deadening chamber are communicated with each other through a first expansion hole.

In some embodiments, the first inlet and the second inlet are located on the same side of the noise reduction structure.

In some embodiments, the number of the first silencing cavities and the second silencing cavities is multiple, the multiple first silencing cavities and the multiple second silencing cavities are arranged in a row along the first direction, and at least one second silencing cavity is arranged between two adjacent first silencing cavities.

In some embodiments, the first and second sound-deadening chambers adjacent to each other arranged in the first direction communicate with each other through the second expansion hole.

In some embodiments, the noise reduction structure comprises: a first portion and a second portion, each extending along the first direction, and one side of the second portion along the first direction is spliced with one side of the first portion along the first direction; the first silencing cavities and the second silencing cavities are arranged in a row along the first direction at the joint of the first parts and the second parts, the first inlet of each first silencing cavity is divided into two parts and is respectively located on the first parts and the second parts, and the second inlet of each second silencing cavity is divided into two parts and is respectively located on the first parts and the second parts.

In a second aspect, the present application provides an electronic device, including: the noise reduction structure comprises a box body structure and any one of the above structures, wherein the box body structure is provided with an accommodating space, the accommodating space is provided with a hard disk and a cooling fan, and a hard disk backboard of the hard disk is provided with an opening; the noise reduction structure is arranged in the box body structure, a first inlet and a second inlet of the noise reduction structure are correspondingly connected with an air outlet of the cooling fan, and a first outlet of the noise reduction structure is opposite to the opening.

In some embodiments, a second sound absorbing material is respectively arranged between the noise reduction structure and the cooling fan and between the noise reduction structure and the hard disk backboard; and/or, a third sound-absorbing material is clamped between at least part of the side surface of the noise-reducing structure and the inner surface of the box body structure, and an air guide opening communicated with the inner surface and the outer surface of the box body structure is arranged at the position of the box body structure, which is abutted against the third sound-absorbing material.

The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical means of the present application more clearly understood, it can be implemented according to the content of the specification, and the following detailed description of the preferred embodiments of the present application will be given with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a second portion of a noise reduction structure according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a noise reduction structure provided in an embodiment of the present application;

fig. 3 is a schematic partial structure of an electronic device according to some embodiments of the present application;

fig. 4 is a schematic partial structure of an electronic device according to other embodiments of the present application.

Reference numerals illustrate:

10. a noise reduction structure; 11. a first sound deadening chamber; 111. a first inlet; 112. a first outlet; 113. a muffler pipe; 114. a first expansion hole; 12. a second sound deadening chamber; 121. a second inlet; 13. a heat radiation fan; 14. a hard disk back plate; 141. an opening; 15. a first portion; 16. a second portion;

20. an electronic device; 21. a box structure; 211. an air guide port; 22. a second sound absorbing material; 23. and a third sound absorbing material.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application. Accordingly, the following detailed description of the embodiments of the present application, provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.

Embodiments and features of embodiments in this application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

First aspect

The embodiment of the present application provides a noise reduction structure 10, referring to fig. 1 to 4, the noise reduction structure 10 includes: a first sound-deadening chamber 11 and a second sound-deadening chamber 12, the first sound-deadening chamber 11 having a first inlet 111 and a first outlet 112, a first sound-absorbing material (not shown in the figure) being provided in the first sound-deadening chamber 11, the first sound-absorbing material in the first sound-deadening chamber 11 being for absorbing noise entering from the first inlet 111; the second sound-deadening chamber 12 has a second inlet 121, and the inner wall of the second sound-deadening chamber 12 is provided with a sound-deadening coating (not shown in the figure), and the sound-deadening coating in the second sound-deadening chamber 12 serves to reflect noise that enters from the second inlet 121; the noise reduction structure 10 can be assembled inside the electronic device 20, and the first inlet 111 and the second inlet 121 are adjacent to the air outlet of the cooling fan 13 in the electronic device 20, and the first outlet 112 is opposite to the opening 141 of the hard disk back plate 14 in the electronic device 20.

Specifically, the first silencing cavity 11 has a first inlet 111 and a first outlet 112, a first sound absorbing material is disposed in the first silencing cavity 11, the first sound absorbing material in the first silencing cavity 11 is used for absorbing noise entering from the first inlet 111, the first inlet 111 is close to an air outlet of the cooling fan 13, the first outlet 112 is opposite to an opening 141 of the hard disk back plate 14 in the electronic device 20, when the cooling fan 13 works, noise generated by vibration enters the first silencing cavity 11 from the first inlet 111 and then is absorbed by the first sound absorbing material in the first silencing cavity 11, so that noise transmitted to a hard disk connected to the hard disk back plate 14 after passing through the first silencing cavity 11 is reduced, vibration is reduced when the noise is reduced to ensure normal read-write performance of the hard disk, and meanwhile, air blown out from the air outlet of the cooling fan 13 enters from the first inlet 111 and is blown out to the opening 141 of the hard disk back plate 14 to cool the hard disk connected to the hard disk back plate 14.

The number of the first sound deadening chambers 11 may be one or more, for example: referring to fig. 1 and 2, the number of the first sound-deadening chambers 11 is plural, the plural first sound-deadening chambers 11 are arranged in order in the first direction, and the plural first sound-deadening chambers 11 can absorb noise at the same time to enable further noise reduction. The first sound absorbing material in the first sound absorbing cavity 11 may be sound absorbing cotton with sound absorbing performance, may be a porous sound absorbing structure, or may be other structures with sound absorbing performance, and when the first sound absorbing material is a porous sound absorbing structure, the first sound absorbing material can convert noise entering the first sound absorbing cavity 11 from sound energy into heat energy, so as to reduce middle-high frequency noise. The number of the first inlets 111 may be one or more, for example: referring to fig. 1 and 2, the number of the first inlets 111 corresponding to the same first silencing chamber 11 is plural, and the first inlets are uniformly arranged in a plurality of rows and columns. The number of the first outlets 112 may be one or more, and the size of the first outlets 112 is smaller than that of the first inlets 111, so that more noise remains in the first sound-deadening chamber 11 to be absorbed by the first sound absorbing material.

The second silencing cavity 12 has the second inlet 121, the sound insulation coating is disposed on the inner wall of the second silencing cavity 12, the sound insulation coating in the second silencing cavity 12 is used for reflecting the noise entering from the second inlet 121, the second inlet 121 is close to the air outlet of the cooling fan 13 in the electronic device 20, so the second silencing cavity 12 is in a groove structure, and after the noise generated by vibration when the cooling fan 13 works enters the second silencing cavity 12 from the second inlet 121, the noise can be reflected between different positions in the second silencing cavity 12 for reduction, thereby the purpose of noise reduction is achieved. Here, the groove structure of the second sound-deadening chamber 12 makes the second sound-deadening chamber 12 have a circle of side walls and a bottom wall connected with the circle of side walls, and the circle of side walls may extend straight or curved along the depth direction of the second sound-deadening chamber 12, or may extend in other shapes, and when the circle of side walls extends curved along the depth direction of the second sound-deadening chamber 12, the noise is allowed to be reflected multiple times in the second sound-deadening chamber 12, so as to further improve the effect of noise reduction.

The second silencing chamber 12 may be disposed adjacent to the first silencing chamber 11 to reduce noise reaching the same hard disk, or may be disposed at a distance from each other to reduce noise reaching two different hard disks or hard disks and other structures having a distance from the hard disks. The number of the second muffling chambers 12 may be one or more, such as: referring to fig. 1 and 2, the number of the second silencing cavities 12 is plural, the second silencing cavities 12 are mixed in the first silencing cavities 11 arranged along the first direction, and the first silencing cavities 11 and the second silencing cavities 12 can absorb and reduce noise synchronously, so that the noise reduction effect can be further improved. The sound-insulating coating in the second sound-deadening chamber 12 may be a sound-insulating cotton or other sound-insulating material. The number of the second inlets 121 may be one or more, for example: referring to fig. 1 and 2, the number of the second inlets 121 corresponding to the same second sound-deadening chamber 12 is plural, and is arranged in a uniform arrangement of plural rows and plural columns. The diameters of the second inlet 121 and the first inlet 111 may be the same or different, for example: the first sound-deadening chamber 11 has a larger spatial dimension than the second sound-deadening chamber 12 to be able to absorb more noise, so that the caliber of the first inlet 111 is larger than that of the second inlet 121.

The noise reduction structure 10 can be assembled in the electronic device 20, and the first inlet 111 and the second inlet 121 are adjacent to the air outlet of the cooling fan 13, and the first outlet 112 is opposite to the opening 141 of the hard disk back plate 14 in the electronic device 20, so that the noise generated by the vibration of the cooling fan 13 during operation can enter the first inlet 111 and the second inlet 121 respectively to be absorbed and reduced by the first sound absorbing material in the first silencing cavity 11 and the sound insulation coating in the second silencing cavity 12, so that the noise reaching the hard disk position is reduced, even completely reduced, to ensure the read-write function of the hard disk, and meanwhile, the air blown out from the air outlet of the cooling fan 13 enters from the first inlet 111 and is blown out to the opening 141 of the hard disk back plate 14 to cool the hard disk connected to the hard disk back plate 14. Here, the hard disk back plate 14 is a portion of the back surface of the hard disk, and the opening 141 thereon can form a heat conduction channel to reduce the temperature of the hard disk.

In some embodiments, the noise reduction structure 10 is disposed in an electronic device 20 (e.g., a host computer of a computer), the first and second silencing cavities 11 and 12 are disposed adjacent to each other, and the first inlet 111 of the first silencing cavity 11 and the second inlet 121 of the second silencing cavity 12 are opposite to the cooling fan 13, and the first outlet 112 of the first silencing cavity 11 is opposite to the opening 141 of the hard disk back plate 14. In this way, the noise generated by the vibration of the cooling fan 13 during operation can enter the first inlet 111 and the second inlet 121 respectively to be absorbed and absorbed by the first sound absorbing material in the first sound absorbing cavity 11 and the sound insulation coating in the second sound absorbing cavity 12, so that the noise reaching the hard disk position is reduced, even completely absorbed, so as to ensure the read-write function of the hard disk, and meanwhile, the air blown out from the air outlet of the cooling fan 13 enters from the first inlet 111 and is blown out from the first outlet 112 to the opening 141 of the hard disk back plate 14 so as to cool the hard disk connected to the hard disk back plate 14.

In this embodiment, the noise reduction structure 10 is disposed inside the electronic device 20, the noise reduction structure 10 is provided with a first noise reduction cavity 11 and a second noise reduction cavity 12, the first inlet 111 of the first noise reduction cavity 11 and the second inlet 121 of the second noise reduction cavity 12 are both adjacent to the air outlet of the cooling fan 13 in the electronic device 20, and the first outlet 112 is opposite to the opening 141 of the hard disk back plate 14 in the electronic device 20, so that the noise generated by the vibration of the cooling fan 13 during operation can enter the first inlet 111 and the second inlet 121 respectively to be absorbed and reduced by the first sound absorbing material in the first noise reduction cavity 11 and the sound insulation coating in the second noise reduction cavity 12, thereby reducing the noise reaching the hard disk position, even completely reducing the noise, so as to ensure the read-write function of the hard disk, and meanwhile, the air blown out from the air outlet of the cooling fan 13 enters from the first inlet 111 and blows out to the opening 141 of the hard disk back plate 14 so as to cool the hard disk connected to the hard disk back plate 14.

In some embodiments, referring to fig. 1, a muffler pipe 113 is disposed in the first muffler chamber 11, and the muffler pipe 113 extends curvedly from the first inlet 111 toward the first outlet 112. In this way, after the noise generated by the cooling fan 13 enters the first silencing cavity 11, at least part of the noise is absorbed by the first sound absorbing material, and after at least part of the noise enters the silencing pipe 113, the silencing pipe 113 does not linearly extend from the first inlet 111 to the first outlet 112, but curvilinearly extends, so that the noise entering the silencing pipe is repeatedly reflected by the inner wall of the silencing pipe 113 and then is reduced. Thereby, the amount of noise transmitted from the first outlet 112 can be further reduced to further protect the hard disk.

In some embodiments, referring to fig. 1, an inner wall of the second sound-deadening chamber 12 opposite to the second inlet 121 is convex in a cambered shape toward the second inlet 121. That is, the bottom wall in the second silencing cavity 12 is protruded in a cambered surface shape towards the direction of the second inlet 121, so that the noise entering the second silencing cavity 12 from the second inlet 121 propagates to the bottom wall and then is reflected to a circle of side wall for further reduction, so that the reduction effect of the noise in the second silencing cavity 12 can be improved.

In some embodiments, referring to fig. 1, the first sound-deadening chamber 11 and the second sound-deadening chamber 12 communicate through the first expansion orifice 114.

Specifically, the first sound-deadening chamber 11 and the second sound-deadening chamber 12 in the above are communicated through the first expansion hole 114, which may be communicated through one first expansion hole 114, or may be communicated through a plurality of expansion holes, and when the first sound-deadening chamber 11 and the second sound-deadening chamber 12 are communicated through a plurality of first expansion holes 114, the plurality of first expansion holes 114 may be arranged in a uniform distribution of a plurality of rows and a plurality of columns as shown in fig. 1. After the first silencing cavity 11 and the second silencing cavity 12 are communicated through the first expansion hole 114, noise in the first silencing cavity 11 can enter the second silencing cavity 12, noise in the second silencing cavity 12 can also enter the first silencing cavity 11, and when the noise propagates between the first silencing cavity 11 and the second silencing cavity 12, the section is suddenly changed, expansion silencing is achieved, and therefore noise reduction effect of the noise reduction structure 10 can be further improved.

In some embodiments, referring to fig. 1 and 2, the first inlet 111 and the second inlet 121 are located on the same side of the noise reduction structure 10. Such as: after the noise reduction structure 10 is assembled in the electronic device 20, one side of the first inlet 111 and one side of the second inlet 121 are the cooling fan 13, so that the first inlet 111 and the second inlet 121 are opposite to the cooling fan 13, and more noise can be absorbed and reduced.

In some embodiments, as shown in fig. 1 and 2, the number of the first sound-deadening chambers 11 and the second sound-deadening chambers 12 is plural, respectively, the plural first sound-deadening chambers 11 and the plural second sound-deadening chambers 12 are arranged in a row along the first direction, and at least one second sound-deadening chamber 12 is provided between two adjacent first sound-deadening chambers 11.

When the first inlet 111 and the second inlet 121 are located on the same side of the noise reduction structure 10, the plurality of first inlets 111 corresponding to the plurality of first noise reduction cavities 11 and the plurality of second inlets 121 corresponding to the plurality of second noise reduction cavities 12 are located on one side of the noise reduction structure 10 formed by the plurality of first noise reduction cavities 11 and the plurality of second noise reduction cavities 12, and thus, noise of the cooling fan 13 respectively enters the plurality of first noise reduction cavities 11 and the plurality of second noise reduction cavities 12 to be absorbed and reduced.

In some embodiments, referring to fig. 1, the first and second sound-deadening chambers 11 and 12 adjacent to each other arranged in the first direction communicate with each other through the second expansion hole. That is, among the plurality of first sound-deadening chambers 11 and the plurality of second sound-deadening chambers 12 arranged in the first direction, when two sound-deadening chambers adjacent to each other are the first sound-deadening chamber 11 and the second sound-deadening chamber 12, respectively, the two are communicated with each other through the second expansion hole. Thus, noise can be mutually propagated between the first sound-deadening chamber 11 and the second sound-deadening chamber 12 adjacent to each other through the second expansion hole, and in the propagation process, the noise is attenuated due to the abrupt change of the cross section, and the noise reduction effect of the noise reduction structure 10 can be further improved.

In some embodiments, referring to fig. 1 and 2, the noise reducing structure 10 includes: a first portion 15 and a second portion 16, each of the first portion 15 and the second portion 16 extending in a first direction, and one side of the second portion 16 in the first direction being spliced with one side of the first portion 15 in the first direction; the first silencing cavities 11 and the second silencing cavities 12 are arranged in a row along the first direction at the joint of the first portion 15 and the second portion 16, the first inlet 111 of each first silencing cavity 11 is divided into two parts and is respectively located on the first portion 15 and the second portion 16, and the second inlet 121 of each second silencing cavity 12 is divided into two parts and is respectively located on the first portion 15 and the second portion 16.

That is, the noise reduction structure 10 includes two parallel columns, namely, a first portion 15 and a second portion 16, where the first portion 15 and the second portion 16 extend along a first direction, and the noise reduction structure 10 is provided with a column of noise reduction cavities extending along the first direction, where the column of noise reduction cavities includes two parts, one part is disposed on the first portion 15, and one part is disposed on the second portion 16, and when one side of the second portion 16 along the first direction is spliced with one side of the first portion 15 along the first direction, the column of noise reduction cavities extending along the first direction is formed. The series of silencing cavities includes a plurality of first silencing cavities 11 and a plurality of second silencing cavities 12, at least one second silencing cavity 12 is arranged between two adjacent first silencing cavities 11, a plurality of first inlets 111 of the plurality of first silencing cavities 11 and a plurality of second inlets 121 of the plurality of second silencing cavities 12 are all located on the same side of the noise reduction structure 10, the first inlet 111 of each first silencing cavity 11 is divided into two parts and located on the first part 15 and the second part 16 respectively, and the second inlet 121 of each second silencing cavity 12 is divided into two parts and located on the first part 15 and the second part 16 respectively.

In this embodiment, the noise reduction structure 10 is divided into two parts, namely, a first part 15 and a second part 16, which are to be spliced, and the first noise reduction cavity 11 and the second noise reduction cavity 12 in each part are open, and when the first part 15 and the second part 16 are spliced, the first noise reduction cavity 11 and the second noise reduction cavity 12 are formed. In this way, the manufacturing process of the open structure is simpler than that of the closed structure, so that the manufacturing process of the noise reduction structure 10 can be simplified.

Second aspect

An embodiment of the present application provides an electronic device 20, referring to fig. 3 and 4, the electronic device 20 includes: the box structure 21 and the noise reduction structure 10 of any one of the above, the box structure 21 has an accommodating space, the accommodating space is provided with a hard disk and a cooling fan 13, and a hard disk back plate 14 of the hard disk is provided with an opening 141; the noise reduction structure 10 is disposed in the box structure 21, the first inlet 111 and the second inlet 121 of the noise reduction structure 10 are correspondingly connected with the air outlet of the cooling fan 13, and the first outlet 112 of the noise reduction structure 10 is opposite to the opening 141.

Specifically, the electronic device 20 in the above may be a device having a hard disk, such as: a host of a computer.

In this embodiment, the noise reduction structure 10 is disposed between the cooling fan 13 and the hard disk, and the noise reduction structure 10 is provided with the first noise reduction cavity 11 and the second noise reduction cavity 12, the first inlet 111 of the first noise reduction cavity 11 and the second inlet 121 of the second noise reduction cavity 12 are adjacent to the air outlet of the cooling fan 13 in the electronic device 20, and the first outlet 112 is opposite to the opening 141 of the hard disk back plate 14 in the electronic device 20, so that the noise generated by the vibration of the cooling fan 13 during operation can enter the first inlet 111 and the second inlet 121 respectively to be absorbed and reduced by the first sound absorbing material in the first noise reduction cavity 11 and the sound insulation coating in the second noise reduction cavity 12, so that the noise reaching the hard disk position is reduced, even completely reduced, so as to ensure the read-write function of the hard disk, and meanwhile, the air blown out from the air outlet of the cooling fan 13 enters from the first inlet 111 and blows out to the opening 141 of the hard disk back plate 14 so as to be able to cool the hard disk connected to the hard disk back plate 14.

In some embodiments, as shown in fig. 3 and 4, a second sound absorbing material 22 is disposed between the noise reducing structure 10 and the heat dissipating fan 13 and between the noise reducing structure 10 and the hard disk back plate 14, respectively; and/or, the third sound absorbing material 23 is clamped between at least part of the side surface of the noise reduction structure 10 and the inner surface of the box body structure 21, and the air guide port 211 communicated with the inner surface and the outer surface of the box body structure 21 is arranged at the position where the box body structure 21 is abutted against the third sound absorbing material 23.

Specifically, the second sound absorbing material 22 may be a sound absorbing cotton having sound absorbing performance, or may be another structure having sound absorbing performance. In this way, the noise generated by the cooling fan 13 is sequentially absorbed by the second sound absorbing material 22 between the cooling fan 13 and the noise reduction structure 10, the first sound reduction cavity 11 and the second sound reduction cavity 12 of the noise reduction structure 10, and the second sound absorbing material 22 between the noise reduction structure 10 and the hard disk back plate 14 in the process of transmitting the noise to the hard disk, so that the amount of the noise generated by the cooling fan 13 transmitted to the hard disk can be reduced, and the read-write performance of the hard disk can be ensured.

The third sound absorbing material 23 is sandwiched between at least part of the side surface of the noise reducing structure 10 and the inner surface of the box structure 21, and the position of the box structure 21 abutting against the third sound absorbing material 23 is provided with an air guide port 211 communicating the inner surface and the outer surface of the box structure 21, for example: referring to fig. 4, the noise reduction structure 10 is interposed between one side surface extending in the first direction and the inner surface of the case structure 21 with the third sound absorbing material 23 interposed therebetween, so that vibration generated when the cooling fan 13 is operated is transmitted to the noise reduction structure 10 to be absorbed by the third sound absorbing material 23. The third sound absorbing material 23 may be a sound absorbing cotton having sound absorbing performance, or may be another material having sound absorbing performance. The box structure 21 is provided with the air guide hole 211 communicating the inner and outer surfaces of the box structure 21 at the position where the box structure 21 contacts the third sound absorbing material 23, so that part of noise and heat can be led out through the air guide hole 211.

It will be appreciated that when the second sound absorbing material 22 and the third sound absorbing material 23 are sound absorbing cotton, gaps between the two structures on both sides of the sound absorbing materials can be reduced. Such as: when the second sound absorbing material 22 between the noise reduction structure 10 and the heat radiation fan 13 is sound absorbing cotton, it is possible to reduce the occurrence of a gap between the noise reduction structure 10 and the heat radiation fan 13.

Examples:

referring to fig. 1 to 4, the electronic device 20 is a host of a computer, and the electronic device 20 includes:

the case structure 21, the case structure 21 has an accommodating space, the accommodating space is provided with a hard disk and a plurality of cooling fans 13, and the hard disk back plate 14 of the hard disk is provided with a plurality of openings 141.

Noise reduction structure 10 is disposed within case structure 21 and between cooling fan 13 and the hard disk. The noise reducing structure 10 includes: the first portion 15 and the second portion 16, the first portion 15 and the second portion 16 each extend along the first direction, and one side of the second portion 16 along the first direction is spliced with one side of the first portion 15 along the first direction. The first silencing cavities 11 and the second silencing cavities 12 are arranged in a row along the first direction at the joint of the first parts 15 and the second parts 16, at least one second silencing cavity 12 is arranged between two adjacent first silencing cavities 11, a first inlet 111 of each first silencing cavity 11 is divided into two parts and is respectively positioned on the first parts 15 and the second parts 16, a second inlet 121 of each second silencing cavity 12 is divided into two parts and is respectively positioned on the first parts 15 and the second parts 16, and a plurality of first inlets 111 of the first silencing cavities 11 and a plurality of second inlets 121 of the second silencing cavities 12 are all positioned on the same side of the noise reduction structure 10. The plurality of first inlets 111 and the plurality of second inlets 121 are respectively connected with the air outlets of the plurality of heat dissipation fans 13 in a one-to-one correspondence manner, and the shapes of the inlets and the air outlets corresponding to each other are consistent. The plurality of first outlets 112 are in one-to-one correspondence with the plurality of openings 141 on the hard disk back plate 14, and the shapes of the first outlets 112 and the openings 141 corresponding to each other are identical. The first sound absorbing material is arranged in the first sound absorbing cavity 11, and the first sound absorbing material in the first sound absorbing cavity 11 is of a porous sound absorbing structure so as to be capable of converting noise entering the first sound absorbing cavity 11 from sound energy into heat energy, so that middle-high frequency noise is mainly reduced; a muffler pipe 113 is provided in each of the first muffler chambers 11, and the muffler pipe 113 extends curvedly from the first inlet 111 toward the first outlet 112. Each second silencing cavity 12 is provided with a second inlet 121, the inner wall of the second silencing cavity 12 is provided with a sound insulation coating, and the sound insulation coating in the second silencing cavity 12 is used for continuously reflecting and canceling noise entering the second silencing cavity 12 to each other so as to mainly reduce low-frequency noise; and the inner wall of the second silencing cavity 12 opposite to the second inlet 121 is protruded in an arc shape towards the direction of the second inlet 121. Also, the first and second sound-deadening chambers 11 and 12 adjacent to each other arranged in the first direction communicate with each other through the second expansion hole so that the noise propagates between the first and second sound-deadening chambers 11 and 12 with each other, and the cross section is abrupt so as to expand to deaden the sound.

The second sound absorbing material 22 is respectively arranged between the noise reduction structure 10 and the cooling fan 13 and between the noise reduction structure 10 and the hard disk backboard 14; a third sound absorbing material 23 is sandwiched between at least part of the side surface of the noise reducing structure 10 and the inner surface of the box structure 21, and an air guide port 211 communicating the inner surface and the outer surface of the box structure 21 is provided at a position where the box structure 21 abuts against the third sound absorbing material 23.

Here, noise propagates in the noise reduction structure 10 instead of the straight line propagation from the heat radiation fan 13 to the hard disk back plate 14, increasing the propagation distance, reducing the influence of noise, and a point-like sound source, the noise value being attenuated by 6dB every double the distance, so that the influence of noise on the hard disk can be reduced.

It should be noted that, the noise reduction structure in the electronic device provided in the embodiment of the present application is similar to the description of the noise reduction structure embodiment described in the foregoing, and has similar beneficial effects as the noise reduction structure embodiment described in the foregoing. For technical details not disclosed in the embodiments of the electronic device in the present application, please refer to the description of the embodiments of the noise reduction structure in the present application, which is not described herein again.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, in the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, in the present application, unless explicitly specified and limited otherwise, the terms "connected," "coupled," and the like are to be construed broadly and may be mechanically coupled or electrically coupled, for example; either directly, or indirectly through intermediaries, or in communication with each other, or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms in this application will be understood to those of ordinary skill in the art.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A noise reduction structure, comprising:

the first sound-absorbing cavity is provided with a first inlet and a first outlet, and is internally provided with a first sound-absorbing material which is used for absorbing noise entering from the first inlet; and, a step of, in the first embodiment,

the second silencing cavity is provided with a second inlet, the inner wall of the second silencing cavity is provided with a sound insulation coating, and the sound insulation coating in the second silencing cavity is used for reflecting noise entering from the second inlet;

the noise reduction structure can be assembled in the electronic equipment, the first inlet and the second inlet are close to an air outlet of a cooling fan in the electronic equipment, and the first outlet is opposite to an opening of a hard disk backboard in the electronic equipment.

2. The noise reducing structure of claim 1, wherein,

the first silencing cavity is internally provided with a silencing pipe, and the silencing pipe extends from the first inlet to the first outlet in a curve mode.

3. The noise reducing structure of claim 1, wherein,

the inner wall of the second silencing cavity opposite to the second inlet is protruded in an arc surface shape towards the direction of the second inlet.

4. The noise reducing structure of claim 1, wherein,

the first silencing cavity is communicated with the second silencing cavity through a first expansion hole.

5. A noise reducing structure as defined in any one of claims 1-3,

the first inlet and the second inlet are located on the same side of the noise reduction structure.

6. The noise reducing structure of claim 5, wherein,

the number of the first silencing cavities and the second silencing cavities is multiple, the first silencing cavities and the second silencing cavities are arranged in a row along the first direction, and at least one second silencing cavity is arranged between every two adjacent first silencing cavities.

7. The noise reducing structure of claim 6, wherein,

the first and second sound deadening chambers adjacent to each other arranged in the first direction are communicated with each other through the second expansion hole.

8. The noise reducing structure of claim 7, wherein,

the noise reduction structure includes: a first portion and a second portion, each extending along the first direction, and one side of the second portion along the first direction is spliced with one side of the first portion along the first direction;

the first silencing cavities and the second silencing cavities are arranged in a row along the first direction at the joint of the first parts and the second parts, the first inlet of each first silencing cavity is divided into two parts and is respectively located on the first parts and the second parts, and the second inlet of each second silencing cavity is divided into two parts and is respectively located on the first parts and the second parts.

9. An electronic device, comprising:

the box body structure is provided with an accommodating space, the accommodating space is provided with a hard disk and a cooling fan, and a hard disk backboard of the hard disk is provided with an opening; and, a step of, in the first embodiment,

the noise reduction structure according to any one of claims 1 to 8, the noise reduction structure being disposed within the case structure, the first inlet and the second inlet of the noise reduction structure being correspondingly connected to the air outlet of the radiator fan, and the first outlet of the noise reduction structure being opposite to the opening.

10. The electronic device of claim 9, wherein the electronic device comprises a memory device,

a second sound absorbing material is respectively arranged between the noise reduction structure and the cooling fan and between the noise reduction structure and the hard disk backboard; and/or the number of the groups of groups,

a third sound absorbing material is clamped between at least part of the side surface of the noise reduction structure and the inner surface of the box body structure, and an air guide port communicated with the inner surface and the outer surface of the box body structure is arranged at the position of the box body structure, which is abutted against the third sound absorbing material.