Silencing device and supercharger

Abstract

The utility model relates to a silencing device which comprises a supporting piece, a silencing piece and a connecting piece. The supporting piece comprises a channel penetrating through the supporting piece. The silencing holes are formed in the supporting piece; the silencing piece is connected with the supporting piece; the partition plate is connected with the supporting piece and located between the silencing hole and the silencing piece. According to the silencer and the supercharger, the silencing effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sound attenuation structure technical field especially relates to a sound attenuation device and supercharger. BACKGROUND

[0002] The turbocharger is a commonly used part of the automobile, when the turbocharger works, the gas enters the flow channel in the turbocharger from the pressure end inlet of the turbocharger, and the gas flows along the flow channel and finally flows out from the outlet of the flow channel. During the working process of the turbocharger, the flow of the gas and the movement of the actuator mechanism cause a certain noise in the flow channel. At present, sound attenuation is carried out by setting sound insulation cotton and sound attenuation rings in the air inlet pipeline, but the sound attenuation effect is poor. SUMMARY

[0003] Therefore, the utility model wants to solve the technical problem to provide a sound attenuation device and supercharger, can improve the sound attenuation effect.

[0004] In order to solve the above technical problem, the utility model provides a sound attenuation device, which comprises: a support piece, the support piece comprises a channel penetrating through the support piece; a sound attenuation hole is located on the support piece; a sound attenuation piece is connected with the support piece; a partition plate is connected with the support piece and located between the sound attenuation hole and the sound attenuation piece.

[0005] In an embodiment of the utility model, the sound attenuation piece is located on the side of the support piece far away from the channel, and the sound attenuation piece is provided with a plurality of sound attenuation pieces.

[0006] In an embodiment of the utility model, the sound attenuation hole is provided with a plurality of sound attenuation holes, and the plurality of sound attenuation holes are equidistantly arranged.

[0007] In an embodiment of the utility model, the diameters of the plurality of sound attenuation holes gradually change along the center line of the support piece in the direction away from the sound attenuation piece.

[0008] In an embodiment of the utility model, the thickness of the support piece gradually changes along the center line of the support piece.

[0009] In an embodiment of the utility model, the support piece is further connected with a connecting plate, the edge of the connecting plate is provided with a plurality of protrusions, and the protrusions are provided with connecting holes.

[0010] In an embodiment of the utility model, the edge of the support piece far away from the sound attenuation piece is provided with a protruding block.

[0011] The utility model further provides a supercharger comprising the above sound attenuation device.

[0012] In one embodiment of the present invention, a receiving cavity is provided at the flow channel output end of the supercharger, and the partition, the silencer hole and the silencer are all located in the receiving cavity.

[0013] In one embodiment of the present invention, the partition is against the side wall of the accommodating cavity.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art:

[0015] The silencer and supercharger described in this utility model utilize a partition to separate the support member and the flow channel sidewall into two spaces, with the two spaces corresponding to the silencer hole and the silencer element, respectively. The silencer hole and the silencer element can silence noise of different frequencies, thereby improving the silencer effect. The gradual change in the diameter of the silencer hole allows the silencer hole to silence more frequencies, and the decibel level of the silenced noise is lowered, further improving the silencer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 This is a structural diagram of a silencer device of the utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure from another angle;

[0019] Figure 3 This is a structural diagram of a supercharger.

[0020] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Support member; 2. Silencer; 3. Partition; 4. Silencer hole; 5. Connecting plate; 6. Protrusion; 7. Supercharger; 51. Protrusion; 52. Connecting hole; 71. Receptacle; 72. Mounting block. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0022] Example 1

[0023] Reference Figure 1 and Figure 2As shown, the utility model relates to a kind of sound attenuation device, comprising: support piece 1, the support piece 1 includes the passage of through support piece 1;Silencing hole 4, on the support piece 1;Silencing piece 2, with the support piece 1 is connected;Partition 3, with the support piece 1 is connected and located between silencing hole 4 and silencing piece 2.

[0024] The sound attenuation device of the embodiment is installed at the flow channel output end position of the supercharger 7, and the partition 3 of the sound attenuation device abuts against the flow channel side wall of the supercharger 7. When the airflow passes through the flow channel and passes through the sound attenuation device, the partition 3 separates the space between the support piece 1 and the flow channel side wall, and the silencing piece 2 and the silencing hole 4 can attenuate noise of different frequencies. By the arrangement of the partition 3, the space between the support piece 1 and the flow channel side wall is divided into two spaces, and the two spaces correspond to the silencing hole 4 and the silencing piece 2 respectively. By the arrangement of the silencing hole 4 and the silencing piece 2, noise of different frequencies can be attenuated, thereby improving the sound attenuation effect.

[0025] The support piece 1 is in the shape of a circular tube as a whole, and the support piece 1 includes a passage arranged along the center line of the support piece 1, so that the airflow can flow through the passage.

[0026] The silencing piece 2 can be regarded as a 1 / 4 wavelength tube, and the silencing piece 2 is located on the side of the support piece 1 away from the passage, i.e., the silencing piece 2 is connected to the outer side of the support piece 1, and the silencing piece 2 can attenuate noise of a certain frequency. The silencing piece 2 is located on the support piece 1 close to the end of the support piece 1. Preferably, a plurality of silencing pieces 2 are arranged, and the plurality of silencing pieces 2 can attenuate noise of different frequencies. Specifically, a plurality of silencing pieces 2 are arranged along the radial direction of the support piece 1, and the silencing pieces 2 arranged along the radial direction form a group. The support piece 1 is provided with a plurality of groups of silencing pieces 2 along the axial direction. The silencing pieces 2 in each group can attenuate noise of the same frequency, and the silencing pieces 2 in different groups can attenuate noise of different frequencies. Therefore, the sound attenuation device can attenuate noise of more frequencies, and the decibel of the noise after being attenuated is lower, thereby improving the sound attenuation effect.

[0027] The silencing hole 4 is arranged on the side wall of the support piece 1 and penetrates through the support piece 1, and the silencing hole 4 can attenuate noise of a certain frequency. The silencing hole 4 is located between the silencing piece 2 and the end of the support piece 1 away from the silencing piece 2. A plurality of silencing holes 4 are arranged, and the plurality of silencing holes 4 are arranged at equal intervals, so that the decibel of the noise after being attenuated by the silencing hole 4 is lower. Preferably, the diameters of the plurality of silencing holes 4 gradually change along the center line of the support piece 1 away from the silencing piece 2, i.e., the diameters of the plurality of silencing holes 4 gradually increase or gradually decrease along the center line of the support piece 1 away from the silencing piece 2, or the diameters of the plurality of silencing holes 4 can be arranged to first increase and then decrease or first decrease and then increase along the center line of the support piece 1 away from the silencing piece 2. Therefore, the silencing hole 4 can attenuate more frequencies, thereby improving the sound attenuation effect.

[0028] Preferably, the thickness of the support 1 gradually changes along the center line of the support 1, that is, the thickness of the support 1 gradually increases or gradually decreases along the center line of the support 1, so that the support 1 can also attenuate noise of different frequencies, and the thickness of the support 1 gradually changes, which can be matched with the diameter-gradually-changing sound attenuation hole 4 and the plurality of sound attenuation members 2, so that the sound attenuation device can attenuate more frequencies, and the sound attenuation effect is improved. Sound attenuation cotton and sound attenuation plates can be arranged in the channel of the support 1, so as to further improve the sound attenuation effect.

[0029] The end of the support 1 away from the sound attenuation member 2 is an output end of the airflow, and the edge of the end of the support 1 away from the sound attenuation member 2 is provided with a protrusion 6, so as to facilitate the clamping of the sound attenuation device and the external device.

[0030] The partition plate 3 is connected with the outer side wall of the support 1, and the partition plate 3 is arranged along the axial direction of the support 1, so that the partition plate 3 is annular as a whole. The partition plate 3 is located between the sound attenuation hole 4 and the sound attenuation member 2, and the partition plate 3 is used to abut against the side wall of the flow channel of the supercharger 7, so that the space between the support 1 and the side wall of the flow channel is divided into two by the partition plate 3. The sound attenuation member 2 is located in one space, and the sound attenuation hole 4 is located in the other space, so as to separate the sound attenuation member 2 and the sound attenuation hole 4. According to the frequency of the noise, the sound attenuation member 2 and the sound attenuation hole 4 can attenuate the noise in turn, and the sound attenuation effect is improved by the arrangement of the sound attenuation member 2 and the sound attenuation hole 4.

[0031] The support 1 is also connected with a connecting plate 5, the connecting plate 5 is connected with the outer side wall of the support 1, and the connecting plate 5 is arranged along the axial direction of the support 1. The connecting plate 5 is used to abut against the output end of the flow channel of the supercharger 7, and the edge of the connecting plate 5 is provided with a plurality of protrusions 51. The end face of the protrusion 51 is provided with a connecting hole 52 parallel to the center line of the support 1, the connecting hole 52 is a through hole, and the connecting hole 52 is used to connect with the supercharger 7, so as to fix the position of the sound attenuation device. Preferably, the protrusions 51 are centrally and symmetrically provided with a plurality of protrusions, and three protrusions are provided in this embodiment, so that the connection between the sound attenuation device and the supercharger 7 is more stable.

[0032] Embodiment two

[0033] Referring to Figure 3 The utility model also provides a supercharger 7 comprising the sound attenuation device in embodiment one.

[0034] The supercharger 7 comprises a channel for airflow circulation, and the position of the output end of the flow channel of the supercharger 7 is provided with a containing member 71. The containing member 71 comprises a containing cavity, part of the support 1 is located in the containing cavity, and the partition plate 3, the sound attenuation hole 4 and the sound attenuation member 2 are all located in the containing cavity. The partition plate 3 abuts against the side wall of the containing cavity, so that the space in the containing cavity is divided into two spaces corresponding to the sound attenuation member 2 and the sound attenuation hole 4 respectively.

[0035] The end of the accommodating member 71 is provided with a mounting block corresponding to the position of the protrusion 51 on the connecting plate 5, and the mounting block is provided with a mounting hole, so that the mounting block and the protrusion 51 can be connected by a fastener, which can be regarded as a bolt, thereby relatively fixing the silencing device and the supercharger 7. The partial support member 1 is located outside the accommodating cavity, and one end of the support member 1 provided with the protrusion 6 is located outside the accommodating cavity.

[0036] In use, the silencing device is installed at the position of the flow channel output end of the supercharger 7 through the cooperation of the connecting plate 5 and the accommodating member 71, the baffle 3, the sound hole 4 and the silencing member 2 are all located in the accommodating cavity, and the baffle 3 abuts against the side wall of the accommodating cavity. When the airflow passes through the flow channel and passes through the silencing device, the silencing member 2 and the sound hole 4 can perform silencing on noise of different frequencies.

[0037] The silencing device and the supercharger of the utility model, through the setting of the baffle 3, the space between the support member 1 and the side wall of the flow channel is divided into two spaces, and the two spaces correspond to the sound hole 4 and the silencing member 2 respectively. Through the setting of the sound hole 4 and the silencing member 2, noise of different frequencies can be silenced, thereby improving the silencing effect. Through the setting of the gradually changing diameter of the sound hole 4, the sound hole 4 can silence more frequencies, and the decibel of the noise after silencing is lower, thereby improving the silencing effect.

[0038] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, all the implementation is not required and cannot be exhausted. The obvious changes or variations derived from the protection scope of the utility model.

Claims

1. A sound attenuating device, characterized in that The application relates to a sound-damping device, comprising: a support, which comprises a channel through the support; a sound-damping hole on the support; a sound-damping piece connected to the support; a partition plate connected to the support and located between the sound-damping hole and the sound-damping piece.

2. The sound attenuating device of claim 1, wherein: The sound-damping piece is located on one side of the support away from the channel, and the sound-damping piece is provided with a plurality of sound-damping holes.

3. The sound attenuating device of claim 1, wherein: The sound-damping hole is provided with a plurality of sound-damping holes, and the plurality of sound-damping holes are arranged at equal intervals.

4. The sound attenuating device of claim 3, wherein: The diameters of the plurality of sound-damping holes gradually change along the center line of the support in a direction away from the sound-damping piece.

5. The sound attenuating device of claim 1, wherein: The thickness of the support gradually changes along the center line of the support.

6. The sound attenuating device of claim 1, wherein: The support is further connected with a connecting plate, and the edge of the connecting plate is provided with a plurality of protrusions, and the protrusions are provided with connecting holes.

7. The sound attenuating device of claim 1, wherein: The edge of one end of the support away from the sound-damping piece is provided with a protruding block.

8. A supercharger characterized by, The application further relates to a sound-damping device comprising any one of the sound-damping devices in claims 1-7.

9. The supercharger of claim 8, wherein: The output end of the flow channel of the supercharger is provided with a containing cavity, and the partition plate, the sound-damping hole and the sound-damping piece are located in the containing cavity.

10. The supercharger of claim 9, wherein: The partition plate abuts against the side wall of the containing cavity.

Images