Noise reduction structure and electronic equipment

Abstract

The utility model discloses a noise reduction structure and electronic equipment, relates to the technical field of electronic equipment, and solves the problem that noise affects use of an electronic device in the prior art. The noise reduction structure comprises a base body and a silencing cavity, and an airflow channel is formed in the base body; the silencing cavity is formed in the inner wall of the airflow channel and comprises a cavity and a sound wave channel, the sound wave channel communicates between the cavity and the airflow channel, the cavity comprises a first inner wall and a second inner wall which are oppositely arranged, and the first inner wall and the second inner wall are both used for reflecting sound waves. The noise reduction structure is used for weakening noise.

Description

Technical Field

[0001] The present application relates to but is not limited to the field of electronic equipment, and in particular to a noise reduction structure and electronic equipment. Background Art

[0002] The electronic device includes an airflow generator that provides airflow. The airflow flows through the electronic device to dissipate heat. However, the airflow generator generates noise when working. If the frequency of the noise resonates with the electronic device, it will affect the working performance of the electronic device. Utility Model Content

[0003] The noise reduction structure and electronic device provided in the embodiments of the present application can offset noise sound waves, weaken the noise carried by airflow, and reduce the adverse effects caused by noise.

[0004] In the first aspect, an embodiment of the present application provides a noise reduction structure, including a substrate and a silencer cavity, the substrate forming an air flow channel; the silencer cavity is opened on the inner wall of the air flow channel, the silencer cavity includes a chamber and a sound wave channel, the sound wave channel is connected between the chamber and the air flow channel, the chamber includes a first inner wall and a second inner wall arranged opposite to each other, and the first inner wall and the second inner wall are both used to reflect sound waves.

[0005] In a possible implementation of the present application, the opening of the sound wave channel is arranged in a middle area of ​​the first inner wall or the second inner wall.

[0006] In a possible implementation of the present application, the sound wave channel includes an open section, the open section is located at one end of the sound wave channel away from the chamber, and the radial dimension of the open section gradually increases in a direction away from the chamber.

[0007] In a possible implementation of the present application, the silencing chamber includes at least two chambers, and a sound wave channel is connected between two adjacent chambers.

[0008] In a possible implementation of the present application, central axes of multiple sound wave channels in the muffler cavity are coaxially arranged.

[0009] In a possible implementation of the present application, the muffler chamber includes at least two chambers with different volumes.

[0010] In a possible implementation of the present application, the base includes a partition, which divides the airflow channel into at least two sub-channels; a silencer cavity is provided on the side wall of the partition corresponding to each sub-channel, and along the extension direction of the side wall, the projections of the silencer cavities located on different sides of the partition at least partially overlap.

[0011] In a possible implementation of the present application, the anechoic chamber is used to eliminate sound waves of a preset frequency, the axial dimension of the sound wave channel and the volume of the chamber are negatively correlated to the preset frequency, and the radial dimension of the sound wave channel is positively correlated to the preset frequency.

[0012] In a possible implementation of the present application, there are multiple muffler cavities, and the multiple muffler cavities are evenly distributed along the inner wall of the air flow channel.

[0013] In a second aspect, an embodiment of the present application provides an electronic device, comprising an electronic device, an airflow generator and the noise reduction structure of the first aspect, wherein the airflow generator is used to generate an airflow toward the electronic device; and the noise reduction structure is arranged between the airflow generator and the electronic device.

[0014] The technical solution provided in the embodiment of the present application is that the substrate is formed with an airflow channel, and the airflow for heat dissipation can pass through the airflow channel, and accordingly, the noise carried by the airflow will also pass through the airflow channel. On this basis, a muffler cavity is opened on the inner wall of the airflow channel, and the muffler cavity includes a chamber and a sound wave channel, and the sound wave channel is connected between the chamber and the airflow channel, that is, the noise can enter the chamber through the sound wave channel, and the chamber includes a first inner wall and a second inner wall arranged relatively. Since the first inner wall and the second inner wall are arranged relatively, the directions of the sound waves reflected by the two are opposite, and they will cancel each other to weaken the noise sound waves, thereby achieving the purpose of noise reduction. Compared with the solution in the related art that only the airflow channel is set but the noise reduction cannot be achieved, the noise reduction structure provided by the present application is provided with a muffler cavity on the inner wall of the airflow channel, and the first inner wall and the second inner wall of the muffler cavity can relatively reflect the sound waves, thereby canceling the noise sound waves, weakening the noise carried by the airflow, and reducing the adverse effects of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the internal structure of an electronic device provided in an embodiment of the present application;

[0016] Figure 2 A schematic diagram of the structure of an airflow channel in a noise reduction structure provided in an embodiment of the present application;

[0017] Figure 3 Provided in the embodiments of this application Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0018] Figure 4 A schematic diagram of the propagation of a first sound wave in a silencing cavity in a noise reduction structure provided in an embodiment of the present application;

[0019] Figure 5 A schematic diagram of the propagation of the second sound wave in the anechoic cavity in the noise reduction structure provided in an embodiment of the present application;

[0020] Figure 6 A schematic diagram of the mutual weakening of the first sound wave and the second sound wave in the noise reduction structure provided in an embodiment of the present application;

[0021] Figure 7 A schematic diagram of the waveform of the third sound wave in the noise reduction structure provided in an embodiment of the present application;

[0022] Figure 8 A schematic diagram of the structure of the muffler cavity in the noise reduction structure provided in an embodiment of the present application;

[0023] Fig. 9 A schematic diagram of a structure in which a plurality of chambers are arranged in a noise reduction cavity in a noise reduction structure provided in an embodiment of the present application;

[0024] Fig.10 A schematic diagram of different structures of multiple chambers of the muffler cavity in the noise reduction structure provided in an embodiment of the present application;

[0025] Fig.11 A schematic diagram of the arrangement of multiple silencer cavities in the noise reduction structure provided in an embodiment of the present application.

[0026] Reference numerals:

[0027] 100-matrix; 110-air flow channel; 120-partition; 111-sub-channel; 200-muffler chamber; 210-chamber; 211-first inner wall; 212-second inner wall; 220-sound wave channel; 221-inlet; 222-open section; 300-electronic device; 400-air flow generator; 500-housing; X-extension direction of the side wall. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0029] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0030] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0031] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0032] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0033] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0034] An embodiment of the present application provides an electronic device, which may be a computer, a server, an industrial computer, an all-in-one computer, a television, a handheld device, a vehicle-mounted terminal, etc. The electronic device generally includes electronic components such as a processor and a memory. These electronic components generate a large amount of heat when working, and therefore require heat dissipation.

[0035] In the related art, an electronic device includes an airflow generator that provides airflow, and the airflow flows through the electronic device to dissipate heat. However, the airflow generator generates noise when working. If the frequency of the noise resonates with the electronic device, it will affect the working performance of the electronic device. For example, when the electronic device is a hard disk, it will cause the read and write speed of the hard disk to decrease.

[0036] Therefore, the embodiment of the present application provides a noise reduction structure, referring to Figure 1 , Figure 2 and Figure 3 The noise reduction structure includes a substrate 100 and a muffler cavity 200, the substrate 100 is formed with an air flow channel 110; the muffler cavity 200 is opened on the inner wall of the air flow channel 110, the muffler cavity 200 includes a chamber 210 and a sound wave channel 220, the sound wave channel 220 is connected between the chamber 210 and the air flow channel 110, the chamber 210 includes a first inner wall 211 and a second inner wall 212 arranged opposite to each other, and the first inner wall 211 and the second inner wall 212 are both used to reflect sound waves.

[0037] In the embodiment of the present application, the substrate 100 is used to be arranged in an electronic device to form an airflow channel 110, so that air flows through the airflow channel 110 and flows through the electronic device 300 to dissipate heat for the electronic device 300. The substrate 100 may be a block structure, a plate structure, etc. For example, the substrate 100 is a block structure, and a through groove is formed on the substrate 100 to form the airflow channel 110.

[0038] In the embodiment of the present application, the airflow channel 110 is opened in the base 100, and the central axis of the airflow channel 110 can extend along a straight line or a curve; along the central axis direction of the airflow channel 110, the radial dimension of the airflow channel 110 can remain consistent, or can be set gradually, or change in a step-like manner; the radial cross-section of the airflow channel 110 can be circular, square, triangular, rhombus, elliptical, trapezoidal, etc. Figure 1 and Figure 2 In a possible embodiment of the present application, the central axis of the airflow channel 110 extends along a straight line, and its radial dimensions are uniformly arranged, and the radial cross-section of the airflow channel 110 is square.

[0039] In the embodiment of the present application, the silencer chamber 200 is opened in the air flow channel 110, that is, the silencer chamber 200 is provided with an inlet 221 on the inner wall of the air flow channel 110. Specifically, the silencer chamber 200 includes a chamber 210 and a sound wave channel 220. The chamber 210 is connected to the air flow channel 110 through the sound wave channel 220, that is, the end of the sound wave channel 220 away from the chamber 210 is provided with an inlet 221 on the inner wall of the air flow channel 110.

[0040] In the embodiment of the present application, the first inner wall 211 and the second inner wall 212 are arranged relative to each other, which means that the projection of the first inner wall 211 and the projection of the second inner wall 212 are at least partially overlapped along the normal direction of one of the two, and there is no barrier between the two. The first inner wall 211 and the second inner wall 212 can be arranged in parallel or at an angle. In addition, the first inner wall 211 and the second inner wall 212 can both be arranged in a plane, or both be arranged in a curved surface, or one of them is a plane and the other is a curved surface, which is not limited in the embodiment of the present application.

[0041] Please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 , Figure 4 It shows that the noise sound wave enters the chamber 210 from the sound wave channel 220 and reaches the first inner wall 211, or the noise sound wave is only reflected by the second inner wall 212 to the first inner wall 211, and the noise sound wave is the first sound wave; Figure 5 The figure shows the situation where the first inner wall 211 reflects the noise sound wave; Figure 6It shows the situation that the noise is weakened after being reflected by the first inner wall 211, and the noise sound wave is the second sound wave; Figure 7 It shows the corresponding Figure 6 In this case, the noise sound waves reflected by the first inner wall 211 and the noise sound waves reflected by the sound wave channel 220 or the second inner wall 212 cancel each other out and weaken each other to form a weakened sound wave with a weaker amplitude. The weakened noise sound wave is the third sound wave.

[0042] In the technical solution provided by the embodiment of the present application, the base 100 is formed with an air flow channel 110 , and the air flow for heat dissipation can pass through the air flow channel 110 , and correspondingly, the noise carried by the air flow will also pass through the air flow channel 110 .

[0043] On this basis, a silencer chamber 200 is opened on the inner wall of the airflow channel 110, and the silencer chamber 200 includes a chamber 210 and a sound wave channel 220. The sound wave channel 220 is connected between the chamber 210 and the airflow channel 110, that is, noise can enter the chamber 210 through the sound wave channel 220. The chamber 210 includes a first inner wall 211 and a second inner wall 212 that are relatively arranged. Since the first inner wall 211 and the second inner wall 212 are relatively arranged, the sound waves reflected by the two are in opposite directions and will offset each other to weaken the noise sound waves, thereby achieving the purpose of noise reduction.

[0044] Compared with the solution in the related art that only sets up the airflow channel 110 but cannot reduce noise, the noise reduction structure provided in the present application has a silencer chamber 200 on the inner wall of the airflow channel 110. The first inner wall 211 and the second inner wall 212 of the silencer chamber 200 can relatively reflect sound waves, thereby offsetting the noise waves, weakening the noise carried by the airflow, and reducing the adverse effects of the noise.

[0045] To improve the noise reduction effect, refer to Figure 3 , Figure 4 and Figure 8 In some possible embodiments of the present application, the opening of the sound wave channel 220 is arranged in the middle area of ​​the first inner wall 211 or the second inner wall 212 .

[0046] In the embodiment of the present application, the chamber 210 may include multiple inner walls, including a first inner wall 211 and a second inner wall 212. The opening of the sound wave channel 220 may be set on the first inner wall 211 or the second inner wall 212. The sound wave channel 220 may also be opened on other inner walls of the chamber 210. For example, the opening of the sound wave channel 220 is set on the inner wall of the chamber 210 parallel to the first inner wall 211.

[0047] In the embodiment of the present application, when the opening of the sound wave channel 220 is set on the first inner wall 211, the opening of the sound wave channel 220 can be located at the edge of the first inner wall 211 or at the middle of the second inner wall 212; correspondingly, when the opening of the sound wave channel 220 is set on the second inner wall 212, the opening of the sound wave channel 220 can be located at the edge of the second inner wall 212 or at the middle of the second inner wall 212. Figure 3 and Figure 4 In a possible embodiment of the present application, the first inner wall 211 and the second inner wall 212 are parallel to each other and have similar areas, and the opening of the sound wave channel 220 is located in the middle of the second inner wall 212 .

[0048] The technical solution provided in the embodiment of the present application sets the opening of the sound wave channel 220 in the middle area of ​​the first inner wall 211 or the second inner wall 212, so that after the noise sound wave enters the chamber 210, it can quickly diffuse to a larger range, and the sound wave reflected by the first inner wall 211 and the sound wave reflected by the second inner wall 212 are in opposite directions, and can offset each other to weaken the noise sound wave.

[0049] In order to facilitate the noise to enter the muffler chamber 200, refer to Figure 3 and Figure 4 In some possible embodiments of the present application, the sound wave channel 220 includes an open section 222, which is located at one end of the sound wave channel 220 away from the chamber 210, and the radial dimension of the open section 222 gradually increases in a direction away from the chamber 210.

[0050] In the embodiment of the present application, the radial cross-section of the acoustic channel 220 can be circular, elliptical, square, triangular, regular hexagonal, etc., and the chamber 210 can be spherical, square, etc. Figure 3 and Figure 8 In a possible embodiment of the present application, the chamber 210 and the sound wave channel 220 are both cylindrical structures.

[0051] In the embodiment of the present application, the open section 222 includes a first end facing the chamber 210 and a second end facing the airflow channel 110. Along the direction from the first end to the second end, the radial dimension of the open section 222 gradually increases, that is, the radial dimension of the second end of the open section 222 is greater than the radial dimension of the first end.

[0052] The technical solution provided in the embodiment of the present application is that an open section 222 is provided at one end of the sound wave channel 220 away from the chamber 210, and the radial dimension of the open section 222 gradually increases in the direction away from the chamber 210, that is, the open section 222 is openly arranged, which is conducive to collecting noise so that more noise can enter the sound wave channel 220.

[0053] To further improve the noise reduction effect, refer to Fig. 9 and Fig.10 In some possible embodiments of the present application, the muffler chamber 200 includes at least two chambers 210 , and a sound wave channel 220 is connected between two adjacent chambers 210 .

[0054] In the embodiment of the present application, the anechoic cavity 200 may include two or more chambers 210, and the shapes and volumes of the multiple chambers 210 may be the same or different. For example, the multiple chambers 210 are all spherical structures, and the volumes of the multiple chambers 210 are the same. Accordingly, the structures and sizes of different sound wave channels 220 in the anechoic cavity 200 may be the same or different.

[0055] The technical solution provided in the embodiment of the present application is provided with a plurality of chambers 210. The plurality of chambers 210 can weaken the noise sound waves through the reflection of the first inner wall 211 and the second inner wall 212, so that the noise sound waves are weakened multiple times, thereby further improving the noise reduction effect.

[0056] In order to facilitate the noise sound waves to reach each chamber 210 smoothly, refer to Fig. 9 and Fig.10 In some possible embodiments of the present application, the central axes of the multiple sound wave channels 220 in the muffler chamber 200 are coaxially arranged.

[0057] In an embodiment of the present application, the central axes of multiple sound wave channels 220 in the silencing chamber 200 can be coaxially arranged or staggered. For example, a certain chamber 210 is connected to two sound wave channels 220, one of which is arranged in the middle of the chamber 210, and the other sound wave channel 220 is arranged at the edge of the chamber 210, so that the central axes of the two sound wave channels 220 are arranged at intervals.

[0058] According to the technical solution provided by the embodiment of the present application, the central axes of the multiple sound wave channels 220 in the muffler chamber 200 are coaxially arranged, so that the sound waves can easily reach the chamber 210 away from the air flow channel 110, that is, the resistance encountered by the noise sound waves in the sound wave channel 220 is reduced, and the noise sound waves are facilitated to enter the chamber 210 and be weakened.

[0059] In order to reduce the noise of more frequencies and further improve the noise reduction effect, refer to Fig.10 In some possible embodiments of the present application, the muffler chamber 200 includes at least two chambers 210 with different volumes.

[0060] In the embodiment of the present application, the muffler chamber 200 may include a plurality of chambers 210, some of the chambers 210 may have different volumes, or all of the chambers 210 may have different volumes, which is not limited in the embodiment of the present application. In the case where the plurality of chambers 210 in the muffler chamber 200 include two chambers 210 with different volumes, the two chambers 210 with different volumes may be alternately distributed.

[0061] In the embodiment of the present application, when the volumes of the multiple chambers 210 in the muffler chamber 200 are different, the volumes of the multiple chambers 210 can gradually decrease in the direction away from the air flow channel 110, or the volumes of the multiple chambers 210 can gradually increase in the direction close to the air flow channel 110.

[0062] According to the technical solution provided in the embodiment of the present application, the silencing chamber 200 includes at least two chambers 210 with different volumes. The chambers 210 with different volumes can reduce noise sound waves of different frequencies, so that one silencing chamber 200 can reduce at least two sound waves of different frequencies, further improving the noise reduction capability.

[0063] In order to arrange more silencing chambers 200 in a limited space to improve the noise reduction effect, refer to Figure 1 , Figure 2 and Fig.11 In some possible embodiments of the present application, the substrate 100 includes a partition 120, which divides the airflow channel 110 into at least two sub-channels 111; the side walls of the partition 120 corresponding to each sub-channel 111 are provided with a muffler cavity 200, and along the extension direction X of the side wall, the projections of the muffler cavities 200 located on different sides of the partition 120 at least partially overlap.

[0064] In the embodiment of the present application, the partition 120 may be a plate-shaped structure disposed in the airflow channel 110, the partition 120 is disposed parallel to the central axis of the airflow channel 110, and the partition 120 is connected to the inner wall of the airflow channel 110 along at least one side of the radial direction of the airflow channel 110, thereby dividing the airflow channel 110. The partition 120 may be a flat plate structure, an arc plate structure, a wavy plate structure, etc., which is not limited in the embodiment of the present application.

[0065] In an embodiment of the present application, the base 100 may include one or more partitions 120, and the multiple partitions 120 may divide the airflow channel 110 into three or more sub-channels 111. The structures of the multiple sub-channels 111 may be the same or different. For example, the multiple sub-channels 111 correspond to different types of electronic devices 300. Since different electronic devices 300 have different heat dissipation requirements, the multiple sub-channels 111 may adopt different structures and sizes; or, the multiple sub-channels 111 correspond to the same type of electronic devices 300, and the multiple sub-channels 111 adopt the same structure and size.

[0066] In the embodiment of the present application, the projections of the muffler cavities 200 located on different sides of the partition 120 at least partially overlap, and for example, the muffler cavities 200 are arranged on opposite sides of the partition 120 to correspond to different sub-channels 111. In the extension direction X along the side wall of the partition 120, the chamber 210 of the muffler cavities 200 on one side of the partition 120 overlaps with the projection of the sound wave channel 220 of the muffler cavities 200 on the other side.

[0067] According to the technical solution provided by the embodiment of the present application, the partition 120 divides the airflow channel 110 into a plurality of sub-channels 111, and a silencer cavity 200 may be provided on the side wall of the partition 120 corresponding to each sub-channel 111. When the silencer cavities 200 located on different sides of the partition 120 at least partially overlap along the extension direction X of the side wall, the thickness of the partition 120 may be reduced, so that a sufficient number of silencer cavities 200 may be provided on a smaller-sized partition 120, thereby improving the noise reduction effect while maintaining a light and thin design.

[0068] In order to make the silencer chamber 200 adapt to the noise sound waves required to be eliminated, in some possible embodiments of the present application, the silencer chamber 200 is used to eliminate sound waves of a preset frequency, the axial dimension of the sound wave channel 220 and the volume of the chamber 210 are both negatively correlated with the preset frequency, and the radial dimension of the sound wave channel 220 is positively correlated with the preset frequency.

[0069] In the embodiment of the present application, the preset frequency can be determined according to the noise frequency in the airflow channel 110, or according to the vibration frequency of the airflow generator 400 when it is working. The relationship between the preset frequency and the dimensions of the chamber 210 and the sound wave channel 220 can be referred to the following formula:

[0070]

[0071] In the formula, f is the preset frequency of the sound wave to be eliminated, v is the transmission speed of the sound wave, which is related to the gas medium in the air flow channel 110, A is the area of ​​the entrance 221 of the sound wave channel 220 on the inner wall of the air flow channel 110, V is the volume of the chamber 210, and L is the length of the sound wave channel 220 along its central axis.

[0072] Reference Figure 8 In a possible embodiment of the present application, the chamber 210 is spherical, the sound wave channel 220 is cylindrical, the volume V of the chamber 210 can be calculated according to its diameter R, and the area A of the entrance 221 of the sound wave channel 220 can be calculated according to its diameter H.

[0073] According to the technical solution provided in the embodiment of the present application, the size of the silencing chamber 200 is designed according to the preset frequency of the noise sound waves that need to be eliminated, and the axial size of the sound wave channel 220 and the volume of the chamber 210 both decrease with the increase of the preset frequency, and increase with the decrease of the preset frequency; the radial size of the sound wave channel 220 increases with the increase of the preset frequency, and decreases with the decrease of the preset frequency, so that the silencing chamber 200 is more adapted to the noise sound waves that need to be eliminated, so as to improve the noise reduction effect.

[0074] To improve the noise reduction effect, refer to Figure 2 and Fig.11 In some possible embodiments of the present application, there are multiple muffler cavities 200 , and the multiple muffler cavities 200 are evenly distributed along the inner wall of the air flow channel 110 .

[0075] In the embodiment of the present application, the shapes and sizes of the multiple silencer cavities 200 may be the same or different. For example, the multiple silencer cavities 200 may include different numbers of chambers 210; or, the volumes of the chambers 210 included in the multiple silencer cavities 200 may be different; or, the radial cross-sectional structures of the sound wave channels 220 included in the multiple silencer cavities 200 may be different.

[0076] In an embodiment of the present application, the multiple silencer cavities 200 may be linearly distributed on the inner wall of the air flow channel 110 , for example, distributed along a straight line or a curve. The multiple silencer cavities 200 may also be arranged in a rectangular array or a circular array on the inner wall of the air flow channel 110 .

[0077] It should be noted that when the airflow channel 110 is separated into multiple sub-channels 111 by the partition 120, the arrangement of the silencer chambers 200 in different sub-channels 111 may be the same or different. For example, multiple sub-channels 111 correspond to different airflow generators 400, wherein the distance between two adjacent silencer chambers 200 in one sub-channel 111 is smaller, and the distance between two adjacent silencer chambers 200 in another sub-channel 111 is larger.

[0078] The technical solution provided in the embodiment of the present application is that a plurality of silencer cavities 200 are arranged in the air flow channel 110, and the plurality of silencer cavities 200 are evenly distributed along the inner wall of the air flow channel 110, so that the local arrangement of the plurality of silencer cavities 200 is more reasonable, and the noise of different areas in the silencer cavities 200 can be uniformly reduced, thereby improving the uniformity of the noise reduction.

[0079] On this basis, refer to Figure 1 The electronic device provided in the embodiment of the present application also includes an electronic device 300, an airflow generator 400 and a noise reduction structure of the embodiment of the present application, the airflow generator 400 is used to generate an airflow toward the electronic device 300; the noise reduction structure is arranged between the airflow generator 400 and the electronic device 300.

[0080] In the embodiment of the present application, the electronic device 300 may be a central processing unit (CPU), a graphics processing unit (GPU), an information storage device, or the like. The information storage device may be a read-only memory (ROM), an enterprise and data center standard (EDS) memory, a solid-state drive, a mechanical hard disk, or the like.

[0081] In an embodiment of the present application, the airflow generator 400 may be an axial flow fan, a vortex fan, etc. The airflow generator 400 may be arranged at the inlet 221 of the airflow channel 110, or may be arranged at a distance from the airflow channel 110. Accordingly, the electronic device 300 may be arranged at the outlet of the airflow channel 110, or may be arranged inside the airflow channel 110.

[0082] The technical solution provided in the embodiment of the present application is that since the electronic device includes a noise reduction structure, when the airflow generator 400 cools the electronic device 300, the airflow generated by the airflow generator 400 first passes through the noise reduction structure and then passes through the electronic device. Accordingly, the noise generated by the airflow generator 400 will be weakened by the noise reduction structure, thereby reducing the impact of the noise on the electronic device 300 and improving the working stability of the electronic device 300.

[0083] Reference Figure 1 , Figure 2 and Figure 3 In a possible embodiment of the present application, the electronic device is a server, which includes a housing 500 and a base 100 disposed in the housing 500. A groove is provided on one side of the base 100 connected to the housing 500 to form an airflow channel 110, and an airflow generator 400 and an electronic device 300 are respectively disposed on both sides along the central axis direction of the airflow channel 110, and the airflow generator 400 and the electronic device 300 are both connected to the housing 500. The base 100 includes a partition 120, which divides the airflow channel 110 into a plurality of sub-channels 111, and each sub-channel 111 corresponds to an airflow generator 400 and an electronic device 300.

[0084] On this basis, a plurality of silencer cavities 200 are evenly distributed on the inner wall of each sub-channel 111, and the plurality of silencer cavities 200 are evenly arranged on the inner wall of the sub-channel 111, and the silencer cavities 200 include at least one chamber 210 and at least one sound wave channel 220, and the chamber 210 is connected to the airflow channel 110 through the sound wave channel 220, and the volume of the chamber 210 and the size of the sound wave channel 220 are set according to the noise sound wave frequency generated by the corresponding airflow generator 400.

[0085] When the airflow generator 400 is working, the airflow generated by the airflow generator 400 reaches the corresponding electronic device 300 through the airflow channel 110, and the vibration of the airflow generator 400 generates noise. The noise enters the airflow channel 110 and can be transmitted to the silencer chamber 200. The sound waves of the noise are reflected by the first inner wall 211 and the second inner wall 212 of the chamber 210 to offset each other, thereby reducing the noise and weakening the energy of the noise sound waves, thereby reducing the adverse effects of the noise on the electronic device 300.

[0086] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A noise reduction structure, characterized in that: include: A base body formed with an air flow channel; A silencing chamber is opened on the inner wall of the airflow channel, the silencing chamber includes a chamber and a sound wave channel, the sound wave channel is connected between the chamber and the airflow channel, the chamber includes a first inner wall and a second inner wall arranged opposite to each other, and the first inner wall and the second inner wall are both used to reflect sound waves.

2. The noise reduction structure according to claim 1, characterized in that: The opening of the sound wave channel is arranged in a middle area of ​​the first inner wall or the second inner wall.

3. The noise reduction structure according to claim 1, characterized in that: The sound wave channel comprises an open section, the open section is located at one end of the sound wave channel away from the chamber, and the radial dimension of the open section gradually increases in a direction away from the chamber.

4. The noise reduction structure according to any one of claims 1 to 3, characterized in that: The muffler cavity includes at least two chambers, and the sound wave channel is connected between two adjacent chambers.

5. The noise reduction structure according to claim 4, characterized in that: The central axes of the plurality of sound wave channels in the muffler cavity are coaxially arranged.

6. The noise reduction structure according to claim 4, characterized in that: The muffler chamber includes at least two chambers with different volumes.

7. The noise reduction structure according to any one of claims 1 to 3, characterized in that: The base body includes a partition, and the partition divides the airflow channel into at least two sub-channels; The side wall of the partition corresponding to each of the sub-channels is provided with the muffler cavity, and along the extension direction of the side wall, the projections of the muffler cavities located on different sides of the partition at least partially overlap.

8. The noise reduction structure according to any one of claims 1 to 3, characterized in that: The anechoic cavity is used to eliminate the sound waves of a preset frequency. The axial dimension of the sound wave channel and the volume of the chamber are both negatively correlated to the preset frequency, and the radial dimension of the sound wave channel is positively correlated to the preset frequency.

9. The noise reduction structure according to any one of claims 1 to 3, characterized in that: There are multiple muffler cavities, and the multiple muffler cavities are evenly distributed along the inner wall of the air flow channel.

10. An electronic device, characterized in that: include: Electronic devices; an airflow generator, used to generate an airflow toward the electronic device; The noise reduction structure according to any one of claims 1 to 9, wherein the noise reduction structure is arranged between the airflow generator and the electronic device.

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