Silencer

Abstract

The utility model provides a muffler device, which includes: a first muffler chamber; a muffler assembly, including a muffler part and an adjustment part, the muffler part is arranged in the first muffler chamber, the muffler part is provided with an airflow inlet, an airflow channel and an airflow outlet connected in sequence, the side of the airflow channel is provided with a plurality of muffler holes, the adjustment part is movably arranged in the first muffler chamber, and the adjustment part is used to adjust the aperture of at least part of the muffler holes. Through this solution, the problem that the muffler device in the prior art is made specifically according to the characteristics of the sound source and its adaptability needs to be improved can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silencer devices, in particular to a silencer device. Background Art

[0002] As environmental requirements become more stringent, people's requirements for equipment noise are also getting higher and higher. Noise is not the product of a single system, but an additional product brought by many functional parts. In many cases, if you want to change the noise source, it will involve reducing the performance of the product itself, which is contradictory to product development. Based on this, the silencer is born. The silencer can significantly reduce the sound energy without changing the sound source, which has a very good effect on reducing noise.

[0003] Existing silencers often need to be specifically designed according to the characteristics of the sound source, and their adaptability needs to be improved. When the frequency or size of the sound source changes, the silencer effect of the silencer decreases, and a different silencer needs to be replaced to adapt to the changed sound source. Utility Model Content

[0004] The utility model provides a muffler device to solve the problem that the muffler device in the prior art is specially made according to the characteristics of the sound source and its adaptability needs to be improved.

[0005] The utility model provides a silencer device, which comprises a first silencer chamber; a silencer assembly, comprising a silencer part and an adjustment part, wherein the silencer part is arranged in the first silencer chamber, the silencer part is provided with an airflow inlet, an airflow channel and an airflow outlet which are connected in sequence, a plurality of silencer holes are arranged on the side of the airflow channel, the adjustment part is movably arranged in the first silencer chamber, and the adjustment part is used to adjust the aperture of at least part of the silencer holes.

[0006] Furthermore, the adjustment part is a cylindrical structure, the adjustment part and the silencer part are sleeved together, a plurality of adjustment holes are arranged on the side wall of the adjustment part, at least some of the adjustment holes coincide with the silencer holes, and the relative position of the adjustment part and the silencer part is adjustable to adjust the aperture of at least some of the silencer holes.

[0007] Furthermore, the adjusting part is movably mounted on the muffler part.

[0008] Furthermore, the silencer device also includes: a driving component, the power output end of the driving component is located in the first silencer chamber, the adjustment part is arranged at the power output end of the driving component, and the driving component is connected to the adjustment part to adjust the relative position of the adjustment part and the silencer part.

[0009] Furthermore, the driving assembly includes: a driving part, the driving end of the driving part is located in the first muffler chamber; a connecting part, which is arranged at the driving end of the driving part and is located in the first muffler chamber, and an adjusting part is fixedly arranged on the connecting part, and the driving part adjusts the position of the adjusting part relative to the muffler part through the connecting part.

[0010] Furthermore, the connecting part is a shell-like structure, the connecting part has an installation cavity, the adjusting part is arranged in the installation cavity, the adjusting part is sleeved on the muffler part, and the connecting part is sleeved on the outside of the muffler part through the adjusting part.

[0011] Furthermore, the space between the connecting part and the adjusting part forms a second silencer chamber, and the silencer device further includes: a silencer portion, which is arranged in the space formed by the first silencer chamber and the connecting part; and / or, the silencer portion is arranged in the silencer portion; and / or, the silencer portion is arranged in the second silencer chamber.

[0012] Furthermore, the connecting part is movably arranged in the first muffler chamber along the length direction of the adjusting part, and the driving part includes: a driving member, a power output end of the driving member is located on one side of the moving direction of the connecting part, the power output end is movably arranged in the first muffler chamber, the power output end is close to or far away from the connecting part, the power output end has a first inclined surface, and the extension direction of the first inclined surface and the moving direction of the connecting part have an angle; a transmission member is arranged on the connecting part, and a second inclined surface is arranged on the transmission member, the second inclined surface is adapted to the first inclined surface, and the first inclined surface and the second inclined surface are driven to cooperate to drive the connecting part to drive the adjusting part to move relative to the muffler part.

[0013] Furthermore, the silencer device also includes: a noise collecting device for collecting noise data passing through the air flow inlet; a control system electrically connected to the noise collecting device, the noise collecting device transmits the collected noise data to the control system, and the control system is electrically connected to the drive component so that the drive component adjusts the position of the adjustment part.

[0014] Furthermore, the airflow inlet and the airflow outlet of the silencer part respectively penetrate into the first end face and the second end face of the first silencer chamber, and the silencer device also includes an expansion chamber; the expansion chamber is arranged upstream of the airflow inlet and connected to the airflow inlet, and the flow area of ​​the expansion chamber is larger than the flow area of ​​the airflow inlet; and / or; the expansion chamber is arranged downstream of the airflow outlet and connected to the airflow outlet, and the flow area of ​​the expansion chamber is larger than the flow area of ​​the airflow outlet.

[0015] Furthermore, at least two first muffler chambers are provided, and the at least two first muffler chambers are spaced apart and distributed along the direction of the air flow channel of the muffler portion, and an expansion chamber is provided between two adjacent first muffler chambers.

[0016] Furthermore, along the direction from the airflow inlet to the airflow outlet, the size of the expansion cavity is adjustable.

[0017] Furthermore, the silencer device further comprises: a sealing portion, which is annularly arranged on the inner side of the expansion chamber; and / or, the sealing portion is annularly arranged on the outer side of the expansion chamber.

[0018] Furthermore, the silencer device includes: a first shell, provided with a first silencer cavity, the first shell having a first end face and a second end face arranged opposite to each other, a first opening arranged on the first end face, a second opening arranged on the second end face, an air flow inlet of the silencer part being connected to the first opening, and an air flow outlet being connected to the second opening.

[0019] Furthermore, a plurality of groups of silencer components are arranged in the first silencer chamber.

[0020] Furthermore, at least two first muffler chambers are provided, and at least two first muffler chambers are spaced apart and distributed along the direction of the air flow channel of the muffler portion, and the muffler components in at least two adjacent first muffler chambers are staggered and distributed.

[0021] Furthermore, the silencer device also includes a protective part; the protective part is arranged on a side of the first silencer chamber close to the air flow outlet, there is a distance between the protective part and the air flow outlet, and the protective part is used to protect the air flow outlet; and / or, the protective part is arranged on a side of the first silencer chamber close to the air flow inlet, there is a distance between the protective part and the air flow inlet, and the protective part is used to protect the air flow inlet.

[0022] By applying the technical solution of the utility model, the aperture size of the silencer hole can be adjusted through the adjustment part for sound sources with different characteristics, so as to achieve a good noise reduction effect. Specifically, when the aperture size of the silencer hole needs to be adjusted, the aperture size of the silencer hole is adjusted by changing the relative position of the adjustment part relative to the silencer part. In the traditional technical solution, it is necessary to design a silencer device with silencer holes of different sizes for sound sources with different characteristics, and its adaptability is low. Compared with the traditional technical solution, the present solution can adjust the aperture size of the silencer hole through the adjustment part, and its adaptability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a muffler device provided in an embodiment of the utility model is shown;

[0025] Figure 2 The schematic diagram of the structure of the driving part provided by the embodiment of the utility model is shown;

[0026] Figure 3 A schematic diagram showing the structure of another noise reduction device provided by an embodiment of the utility model is shown;

[0027] Figure 4 A schematic diagram showing the structure of another noise reduction device provided by an embodiment of the utility model is shown;

[0028] Figure 5 A schematic structural diagram of a silencer equipped with a protective portion provided in an embodiment of the utility model is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. First shell; 101. First muffler chamber; 102. Expansion chamber;

[0031] 11. first convex ring; 12. second convex ring;

[0032] 20. muffler; 201. air flow inlet; 202. air flow outlet;

[0033] 30. Adjustment Department;

[0034] 40. Driving unit;

[0035] 41. Driving parts;

[0036] 411, screw section; 412, first conical section;

[0037] 42. Transmission parts;

[0038] 421. connecting rod; 422. second tapered section;

[0039] 50. Connecting portion; 501. Mounting cavity;

[0040] 60. Noise collection device;

[0041] 70. protection part; 71. protection plate; 72. support rod;

[0042] 81. First sealing part; 82. Second sealing part. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] like Figure 1As shown, the embodiment of the utility model provides a muffler device, which includes a first muffler chamber 101 and a muffler assembly. The muffler assembly includes a muffler portion 20 and an adjustment portion 30, the muffler portion 20 is arranged in the first muffler chamber 101, the muffler portion 20 is provided with an airflow inlet 201, an airflow channel and an airflow outlet 202 that are connected in sequence, and a plurality of muffler holes are arranged on the side of the airflow channel, and the adjustment portion 30 is movably arranged in the first muffler chamber 101, and the adjustment portion 30 is used to adjust the aperture of at least part of the muffler holes.

[0045] By applying the technical solution of the utility model, the aperture size of the muffler hole can be adjusted by the adjustment part 30 for sound sources with different characteristics, so as to achieve a good noise reduction effect. Specifically, when the aperture size of the muffler hole needs to be adjusted, the aperture size of the muffler hole is adjusted by changing the relative position of the adjustment part 30 relative to the muffler part 20. In the traditional technical solution, it is necessary to design a muffler device with muffler holes of different sizes for sound sources with different characteristics, and its adaptability is low. Compared with the traditional technical solution, the present solution can adjust the aperture size of the muffler hole by the adjustment part 30, and its adaptability is stronger.

[0046] In this embodiment, the adjusting part 30 and the muffler part 20 are respectively cylindrical structures, the adjusting part 30 and the muffler part 20 are sleeved, a plurality of adjusting holes are arranged on the side wall of the adjusting part 30, at least some of the adjusting holes coincide with the muffler holes, and the relative position of the adjusting part 30 and the muffler part 20 is adjustable to adjust the aperture of at least some of the muffler holes. The adjusting part 30 and the muffler part 20 are respectively arranged as cylindrical structures, which has a simple structure, is easy to process, and is easy to adjust the relative position between the two, so as to adjust the aperture of the muffler hole.

[0047] This solution does not limit the way in which the adjusting part 30 and the muffler 20 are mutually connected. During the relative movement of the adjusting part 30 and the muffler 20, the adjusting part 30 and the muffler 20 guide and cooperate with each other. This arrangement can improve the stability of the relative position adjustment process of the adjusting part 30 and the muffler 20.

[0048] In the embodiment of this solution, the position of the muffler 20 relative to the first muffler chamber 101 is fixed, the adjustment portion 30 is sleeved on the muffler 20 , and the position of the adjustment portion 30 relative to the first muffler chamber 101 is adjustable.

[0049] In some other embodiments of the present solution, the position of the muffler portion 20 relative to the first muffler cavity 101 is adjustable, and the position of the adjustment portion relative to the first muffler cavity 101 is adjustable.

[0050] This solution does not limit the shapes of the cross sections of the muffler portion 20 and the adjustment portion 30 , and only requires that the shapes of the cross sections of the muffler portion 20 and the adjustment portion 30 match each other.

[0051] In the embodiment of the present solution, the muffler 20 and the adjustment part 30 are cylindrical tube structures respectively. With such arrangement, the adjustment part 30 can rotate relative to the muffler 20 to adjust the aperture size of the muffler hole; or the adjustment part 30 can move relative to the muffler 20 in the axial direction to adjust the aperture size of the muffler hole; or the adjustment part 30 can rotate relative to the muffler 20 and move relative to the muffler 20 to adjust the aperture size of the muffler hole.

[0052] In other embodiments of the present invention, the cross-sections of the muffler 20 and the adjustment portion 30 are polygonal structures. This arrangement allows the adjustment portion 30 to move relative to the muffler 20 in the axial direction to adjust the aperture size of the muffler hole, and can enhance the guiding effect between the adjustment portion 30 and the muffler 20.

[0053] In this embodiment, the adjustment portion 30 and the muffler portion 20 move relative to each other only in the axial direction.

[0054] In the embodiment of the present scheme, the aperture and number of the silencer holes are exactly the same as the aperture and number of the adjustment holes, and when the silencer device is in the initial position, the silencer holes are completely correspondingly connected to the adjustment holes.

[0055] In some other embodiments of the present scheme, the aperture diameter and the number of the silencer holes are not completely the same as the aperture diameter and the number of the adjustment holes, and when the silencer device is in the initial position, the silencer holes and the adjustment holes do not completely correspond to each other, as long as the aperture diameter of the silencer holes changes when the position of the adjustment part 30 relative to the silencer part 20 changes.

[0056] The embodiment of the present scheme does not limit the aperture shapes of the adjustment holes and the silencer holes, and they can be set to be one or more of circular holes and polygonal holes.

[0057] Furthermore, the muffler device further includes a driving assembly, the power output end of the driving assembly is located in the first muffler chamber 101, the adjustment part 30 is arranged at the power output end of the driving assembly, and the driving assembly is drivingly connected to the adjustment part 30 to adjust the relative position of the adjustment part 30 and the muffler 20. The arrangement of the driving assembly can facilitate the adjustment of the relative position between the adjustment part 30 and the muffler 20, thereby improving the convenience of the device when used.

[0058] Specifically, the driving assembly includes a driving part 40 and a connecting part 50, and the driving end of the driving part 40 is located in the first muffler chamber 101. The connecting part 50 is arranged at the driving end of the driving part 40, and the connecting part 50 is located in the first muffler chamber 101. The adjusting part 30 is fixedly arranged on the connecting part 50, and the driving part 40 adjusts the position of the adjusting part 30 relative to the muffler 20 through the connecting part 50. The arrangement of the connecting part 50 facilitates the connection between the adjusting part 30 and the driving part 40.

[0059] This solution does not limit the specific formation method of the first muffler chamber 101.

[0060] In the embodiment of the present solution, the silencer device further comprises a first shell 10 . The first shell 10 is roughly a cubic structure. The first shell 10 has a first silencer cavity 101 . The silencer assembly is disposed in the first shell 10 .

[0061] Specifically, the first shell 10 includes a first end face and a second end face that are oppositely arranged, a first opening is arranged on the first end face, a second opening is arranged on the second end face, an airflow inlet 201 of the muffler 20 is communicated with the first opening, and an airflow outlet 202 of the muffler 20 is communicated with the second opening. In the figure, the upper end face of the first shell 10 is defined as the first end face, the lower end face of the first shell 10 is defined as the second end face, and the direction from the first end face to the second end face is defined as the height direction of the first shell 10.

[0062] In some embodiments of the present solution, the axial direction of the muffler 20 is the same as the direction from the upper end surface to the lower end surface of the first shell 10 .

[0063] In some embodiments of the present solution, there is an angle between the axial direction of the muffler 20 and the direction from the upper end surface to the lower end surface of the first shell 10. In this way, the axial dimensions of the muffler 20 and the adjustment part 30 can be increased as much as possible while ensuring the same height dimension of the first shell 10, thereby increasing the length of the sound propagation path and further improving the muffler effect of the present device.

[0064] This solution does not limit the number of silencer components in a first silencer chamber 101. Each first silencer chamber 101 may be provided with one or more sets of silencer components. The number of first openings provided on the first end face of the first shell 10 and the number of second openings provided on the second end face are respectively the same as the number of silencer components. The provision of multiple sets of silencer components makes the effective ventilation cross-sectional area of ​​the device larger and the silencer effect more obvious.

[0065] In this embodiment, multiple groups of silencer components are arranged in the same first silencer chamber 101, that is, multiple groups of silencer components are arranged in a first shell 10, and the airflow inlet 201 and the airflow outlet 202 of the silencer part 20 of each group of silencer components are respectively connected to the corresponding first opening and second opening.

[0066] In the embodiment of the present solution, the adjusting parts 30 of at least two groups of muffler assemblies are respectively fixedly arranged on the same connecting part 50, that is, the adjusting parts 30 of multiple groups of muffler assemblies are synchronously moved by one driving part 40 and one connecting part 50. Such an arrangement reduces the number of parts and reduces the cost.

[0067] In some other embodiments of the present invention, each set of driving components drives the adjustment part 30 of one set of muffler components to move, that is, the adjustment parts 30 of multiple sets of muffler components move independently of each other. This arrangement enables the present device to be applicable to more noise reduction scenarios, further improving the adaptability of the present device.

[0068] This solution does not limit the specific forms of the driving part 40 and the connecting part 50.

[0069] In some embodiments of the present solution, the driving portion 40 and the connecting portion 50 may be configured in the form of a telescopic cylinder and a connecting plate.

[0070] In other embodiments of the present solution, the driving portion 40 and the connecting portion 50 may be configured in the form of a driving motor, a lead screw and a nut that are threadably matched with each other.

[0071] In other embodiments of the present solution, the driving portion 40 and the connecting portion 50 may be configured in the form of a driving motor, a belt and a pulley that cooperate with each other.

[0072] like Figure 1 and Figure 2 As shown, in the embodiment of the present solution, the connecting part 50 is a shell-like structure, the connecting part includes a second shell, the connecting part 50 has an installation cavity 501, the adjusting part 30 is arranged in the installation cavity 501, the adjusting part 30 is sleeved on the muffler 20, and the connecting part 50 is sleeved on the outside of the muffler 20 through the adjusting part 30. Such an arrangement can make the connecting part 50 have a certain muffler effect, further improving the muffler effect of the present device.

[0073] This solution does not limit the specific structure and shape of the connecting portion 50.

[0074] In this solution, the connecting part 50 is roughly a cubic shell structure, at least one connecting part 50 is arranged in a first muffler cavity 101, and at least one adjusting part 30 of a muffler assembly is arranged in the mounting cavity 501 of each connecting part 50.

[0075] In the embodiment of this solution, a connecting portion 50 is disposed in a first muffler chamber 101, and a plurality of adjusting portions 30 are disposed in the connecting portion 50. Such arrangement enables the adjusting portions 30 of the plurality of muffler assemblies to move synchronously when the connecting portion 50 moves.

[0076] Specifically, the adjusting portion 30 is a cylindrical structure with openings at both ends, and the connecting portion 50 has a third end face and a fourth end face arranged opposite to each other, a third opening is arranged on the third end face, and a fourth opening is arranged on the fourth end face, and the number of the third opening and the fourth opening is connected and arranged corresponding to the two ends of the adjusting portion 30. In the figure, the top end face of the connecting portion 50 is defined as the third end face, and the bottom end face of the connecting portion 50 is defined as the fourth end face.

[0077] In the embodiment of the present scheme, the connecting part 50 is movably arranged in the first muffler chamber 101 along the length direction of the adjusting part 30, and the driving part 40 includes a driving member 41 and a transmission member 42. The power output end of the driving member 41 is located on one side of the moving direction of the connecting part 50, and the power output end is movably arranged in the first muffler chamber 101. The power output end is close to or away from the connecting part 50, and the power output end has a first inclined surface, and the extension direction of the first inclined surface has an angle with the moving direction of the connecting part 50. The transmission member 42 is arranged on the connecting part 50, and a second inclined surface is arranged on the transmission member 42, and the second inclined surface is adapted to the first inclined surface. The first inclined surface and the second inclined surface drive and cooperate to drive the connecting part 50 to drive the adjusting part 30 to move relative to the muffler 20. With such an arrangement, its structure is simple and the operation is convenient.

[0078] Specifically, the driving member 41 includes a driving motor, which is fixedly arranged on the outer wall of the first shell 10. The output shaft of the driving motor includes a screw segment 411 and a first conical segment 412 which are connected to each other. The screw segment 411 is penetrated through the side wall of the first shell 10 and is threadedly connected to the side wall of the first shell 10. The first conical segment 412 and one end of the screw segment 411 are penetrated through the first muffler chamber 101. Along the direction from the first conical segment 412 to the screw segment 411, the diameter of the first conical segment 412 gradually increases, wherein the axial direction of the screw segment 411 is perpendicular to the axial direction of the adjusting part, and the peripheral surface of the first conical segment 412 forms a first inclined surface.

[0079] The transmission member 42 includes a connecting rod 421 and a second tapered section 422 which are sequentially connected along the axis. The axis direction of the connecting rod 421 is parallel to the axis direction of the screw section 411. One end of the connecting rod 421 is arranged on the side wall of the second housing. The diameter of the second tapered section 422 gradually decreases along the direction from the connecting rod 421 to the second tapered section 422. The circumferential surface of the second tapered section 422 forms a second inclined surface.

[0080] When the position of the second shell body relative to the first shell body 10 needs to be adjusted, the screw segment 411 is rotated. The screw segment 411 moves closer to or farther from the second shell body while rotating. When the screw segment 411 moves closer to the second shell body, the second shell body moves upward under the action of the second conical segment 422 and the first conical segment 412; when the screw segment 411 moves away from the second shell body, the second shell body moves downward under the action of the second conical segment 422 and the first conical segment 412. The above arrangement can realize fine adjustment of the relative position of the second shell body and the first shell body 10, and facilitates the precise adjustment of the aperture size of the muffler hole.

[0081] In the embodiment of the present solution, a set of driving components includes a driving member 41 and two transmission members 42. In a set of driving components that cooperate with each other, the driving member 41 is located between the two transmission members 42, and the driving member 41 is located below the two transmission members 42. Such an arrangement can improve the stability of the driving member 41 driving the transmission member 42.

[0082] This solution does not limit the number of drive components, and one or more drive components may be provided.

[0083] In this embodiment, two drive assemblies are arranged at intervals along the circumference of the first housing 10, and the two drive members 41 are respectively arranged on two opposite side walls of the first housing 10. Such an arrangement makes the second housing evenly stressed, which can improve the smoothness and accuracy of adjusting the second housing.

[0084] In some embodiments of the present solution, the space between the connecting portion 50 and the adjusting portion 30 forms a second muffler cavity, and the muffler device further comprises a first muffler portion, which is disposed in the second muffler cavity. The provision of the first muffler portion can further enhance the muffler effect of the present device.

[0085] In some embodiments of the present solution, the silencing device further includes a second silencing portion, which is disposed in the silencing portion 20. Such a configuration can further enhance the silencing effect of the present device.

[0086] In some embodiments of the present solution, the silencing device further includes a third silencing portion, which is disposed in a space formed by the first silencing chamber 101 and the connecting portion 50. Such a configuration can further enhance the silencing effect of the present device.

[0087] The present solution does not limit the specific forms of the first silencer, the second silencer and the third silencer, which may be configured as silencer cotton or other structures with a silencer effect.

[0088] like Figure 1 As shown, in some embodiments of the present solution, the muffler further includes an expansion chamber 102, which is disposed downstream of the airflow outlet 202 and communicated with the airflow outlet 202, and the flow area of ​​the expansion chamber 102 is greater than the flow area of ​​the airflow outlet 202. The arrangement of the expansion chamber 102 causes the cross-sectional area of ​​the flow to change when the airflow passes through the airflow channel and the expansion chamber 102, further improving the noise reduction effect.

[0089] Specifically, the expansion chamber 102 located downstream of the airflow outlet 202 is connected to the airflow outlet 202 of at least one muffler 20. That is, the expansion chamber 102 is connected in a one-to-one or one-to-many manner with the airflow outlet 202. When the expansion chamber 102 is connected in a one-to-many manner with the airflow outlet 202, the flow area of ​​the expansion chamber 102 is greater than the flow areas of the multiple airflow outlets 202 connected thereto.

[0090] In some embodiments of the present solution, the expansion chamber 102 is disposed upstream of the airflow inlet 201 and communicates with the airflow inlet 201, and the flow area of ​​the expansion chamber 102 is greater than the flow area of ​​the airflow inlet 201. With such an arrangement, when the airflow passes through the expansion chamber 102 and the airflow channel, the cross-sectional area of ​​the flow changes, further improving the noise reduction effect.

[0091] Specifically, the expansion chamber 102 located upstream of the airflow inlet 201 is connected to the airflow inlet 201 of at least one muffler 20. That is, the expansion chamber 102 is connected in a one-to-one or one-to-many manner with the airflow inlet 201. When the expansion chamber 102 is connected in a one-to-many manner with the airflow outlet 202, the flow area of ​​the expansion chamber 102 is greater than the flow areas of the multiple airflow inlets 201 connected thereto.

[0092] like Figure 3 and Figure 4 As shown, in some embodiments of the present solution, at least two first muffler chambers 101 are provided, and at least two first muffler chambers 101 are spaced apart along the direction of the airflow channel of the muffler portion 20, and an expansion chamber 102 is provided between two adjacent first muffler chambers 101, and the first muffler chamber 101 and the expansion chamber 102 are independent of each other. In this way, the channel for airflow circulation forms an alternately distributed form of expansion channels and contraction channels, further improving the muffler effect of the present device.

[0093] In the embodiment of the present scheme, two expansion chambers 102 and a first muffler chamber 101 are provided on a first shell 10, and the two expansion chambers 102 are respectively located at the two ends of the first muffler chamber 101. It is worth noting that one end of the first muffler chamber 101 refers to the end of the first muffler chamber 101 connected to the first opening, and the other end of the first muffler chamber 101 refers to the end connected to the second opening.

[0094] The embodiment of this solution does not limit the specific shape and forming method of the expansion cavity 102.

[0095] In the embodiment of the present scheme, the end face of the first shell 10 provided with the first opening is defined as the first end face, and the first shell 10 also includes a first convex ring 11 protruding outward along the contour of the first end face, and the space enclosed by the first convex ring 11 and the first end face forms one of the expansion cavities 102. The end face of the first shell 10 provided with the second opening is defined as the second end face, and the first shell 10 also includes a second convex ring 12 protruding outward along the contour of the second end face, and the space enclosed by the second convex ring 12 and the second end face forms another expansion cavity 102. Such a configuration facilitates stacking of multiple first shells 10 along the direction from the airflow inlet 201 to the airflow outlet 202, thereby achieving noise reduction processing for noises with different properties and improving the adaptability of the present device.

[0096] In some embodiments of the present solution, the sound-absorbing components in the two first shells 10 stacked on each other are coaxially arranged. In other embodiments of the present solution, the sound-absorbing components in the two first shells 10 stacked on each other are staggered with each other. In some embodiments of the present solution, the sizes of the sound-absorbing components in the two first shells 10 stacked on each other are the same. In other embodiments of the present solution, the sizes of the sound-absorbing components in the two first shells 10 stacked on each other are the same. The specific setting form can be adjusted according to the nature of the noise. Such a setting can further enhance the adaptability of the device.

[0097] In some embodiments of the present solution, multiple first shells 10 are arranged side by side. It is worth noting that multiple first shells 10 are arranged side by side, which means that after multiple first shells 10 are arranged side by side, the side walls of two adjacent first shells 10 abut against each other, and the side walls of the first shells 10 refer to the side walls without the first opening and the second opening. The specific arrangement can be arranged according to the specific noise scene. Such an arrangement can further improve the adaptability of the present device.

[0098] Specifically, stacking the first shells 10 on each other is defined as the first shells 10 being arranged in series, and the first shells 10 being arranged side by side is defined as the first shells 10 being arranged in parallel. In some embodiments of the present solution, a plurality of first shells 10 may be arranged in a single parallel arrangement; in some embodiments of the present solution, a plurality of first shells 10 may be arranged in a single series arrangement; in some embodiments of the present solution, a plurality of first shells 10 may be arranged in a combination of parallel and series arrangement. The specific arrangement may be determined according to the nature of the noise.

[0099] In some embodiments of the present solution, a plurality of groups of alternately distributed expansion chambers 102 and first muffler chambers 101 are disposed in the same first shell 10 .

[0100] In order to make the device applicable to noises with different properties, in the embodiment of the present solution, the size of the expansion cavity 102 is adjustable along the direction from the airflow inlet 201 to the airflow outlet 202 .

[0101] In some embodiments of the present solution, when processing the first shell 10 , the depth dimensions of the first convex ring 11 and the second convex ring 12 can be determined according to the noise properties to determine the dimension of the expansion cavity 102 along the direction from the airflow inlet 201 to the airflow outlet 202 .

[0102] In some embodiments of the present solution, when two adjacent first shells 10 are stacked, the first convex ring 11 of one first shell 10 and the second convex ring 12 of the other first shell 10 are plugged into each other. Such a configuration can facilitate the stacking of two adjacent first shells 10. In addition, the cavity formed by the plugging of the first convex ring 11 and the second convex ring 12 acts as an expansion cavity.

[0103] Furthermore, the size of the cavity formed after the first convex ring 11 and the second convex ring 12 are plugged together can be adjusted by the plugging depth of the first convex ring 11 and the second convex ring 12 .

[0104] Furthermore, in the two first shells 10 stacked on each other, the first convex ring 11 of one first shell 10 is inserted into the second convex ring 12 of the other first shell 10. The muffler also includes a first sealing portion 81 and a second sealing portion 82, wherein the first sealing portion 81 is annularly arranged in the first convex ring 11 along the inner side wall of the first convex ring 11, and the second sealing portion 82 is annularly arranged in the second convex ring 12 along the inner side wall of the second convex ring 12. When the first convex ring 11 and the second convex ring 12 are inserted into each other, at least part of the second sealing portion 82 is annularly arranged on the outer side of the first convex ring 11, and the end faces of the second sealing portion 82 and the first sealing portion 81 that are close to each other are abutted and matched. In this way, the space formed between the first convex ring 11 and the second convex ring 12 can be used to position the first sealing portion 81 and the second sealing portion 82, thereby improving the stability and convenience of the installation of the first sealing portion 81 and the second sealing portion 82.

[0105] In the embodiment of the present solution, the height dimension of the first sealing portion 81 is less than or equal to the height dimension of the first convex ring 11, and the height dimension of the second sealing portion 82 is less than or equal to the height dimension of the second convex ring 12. When the two first shells 10 are stacked, the height dimension of the expansion cavity 102 formed between the two first shells 10 can be adjusted by changing the height dimension of the first sealing portion 81 and the height dimension of the second sealing portion 82.

[0106] like Figure 5As shown, in some embodiments of the present solution, the airflow inlet 201 is located above the airflow outlet 202, and the muffler device further includes a protective portion 70. The protective portion 70 is disposed on one side of the first muffler chamber 101 close to the airflow inlet 201, and there is a gap between the protective portion 70 and the airflow inlet 201 for airflow to pass through, and the protective portion 70 is used to protect the airflow inlet 201. Specifically, the protective portion 70 can realize protection functions such as rainproof and dustproof, and expand the applicable scenarios of the present device.

[0107] Specifically, the protective part 70 includes a protective plate 71 and a plurality of support rods 72. The plurality of support rods 72 are arranged on the first shell 10 and are located on the side of the first muffler chamber 101 close to the air flow inlet 201. The protective plate 71 is arranged at the end of the support rod 72 away from the first shell 10. There is a spacing between the protective plate 71 and the first shell 10 to form a space for air flow to pass through. Along the direction from the first shell 10 to the protective plate 71, the projection of the first shell 10 is located on the protective plate 71.

[0108] In some embodiments of the present solution, the airflow outlet 202 is located above the airflow inlet 201, the protective portion 70 is disposed on a side of the first muffler chamber 101 close to the airflow outlet 202, and there is a gap between the protective portion 70 and the airflow outlet 202 for airflow to pass through, and the protective portion 70 is used to protect the airflow outlet 202. Specifically, the protective portion 70 can achieve rainproof and dustproof protection functions, thereby expanding the applicable scenarios of the present device.

[0109] Specifically, the protective part 70 includes a protective plate 71 and a plurality of support rods 72. The plurality of support rods 72 are arranged on the first shell 10 and are located on the side of the first muffler chamber 101 close to the air flow outlet 202. The protective plate 71 is arranged at one end of the support rod 72 away from the first shell 10. There is a spacing between the protective plate 71 and the first shell 10 to form a space for fluid to pass through. Along the direction from the first shell 10 to the protective plate 71, the projection of the first shell 10 is located on the protective plate 71.

[0110] like Figure 1 As shown, further, the silencing device also includes a noise collecting device 60, which is used to collect noise data passing through the airflow inlet 201. The control system is electrically connected to the noise collecting device 60, and the noise collecting device 60 transmits the collected noise data to the control system, and the control system is electrically connected to the driving component so that the driving component adjusts the position of the adjusting part 30. In this way, the automatic processing of noise reduction optimization can be realized through the automatic control system.

[0111] The embodiments of the present scheme do not limit the specific location of the noise collection device 60 , wherein the noise collection device 60 can be set in the first muffler chamber 101 , at the airflow inlet 201 , or in the expansion chamber 102 near the airflow inlet 201 .

[0112] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0113] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0114] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0115] For ease of description, spatially relative terms such as "above", "above", "on the upper end face of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0116] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0117] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A muffler, characterized in that: include: A first muffler chamber (101); A muffler assembly comprises a muffler portion (20) and an adjustment portion (30), wherein the muffler portion (20) is arranged in the first muffler cavity (101), the muffler portion (20) is provided with an airflow inlet (201), an airflow channel and an airflow outlet (202) which are connected in sequence, a plurality of muffler holes are provided on the side of the airflow channel, and the adjustment portion (30) is movably arranged in the first muffler cavity (101), and the adjustment portion (30) is used to adjust the aperture of at least part of the muffler holes.

2. The muffler device according to claim 1, characterized in that: The adjusting portion (30) is a cylindrical structure, and the adjusting portion (30) is sleeved with the muffler portion (20). A plurality of adjusting holes are arranged on the side wall of the adjusting portion (30), and at least some of the adjusting holes overlap with the muffler holes. The relative position of the adjusting portion (30) and the muffler portion (20) is adjustable to adjust the aperture of at least some of the muffler holes.

3. The muffler device according to claim 2, characterized in that: The adjusting part (30) is movably sleeved on the muffler part (20).

4. The muffler device according to claim 1, characterized in that: The muffler also includes: A driving assembly, wherein the power output end of the driving assembly is located in the first muffler chamber (101), the adjusting portion (30) is arranged at the power output end of the driving assembly, and the driving assembly is connected to the adjusting portion (30) to adjust the relative position of the adjusting portion (30) and the muffler portion (20).

5. The muffler device according to claim 4, characterized in that: The drive assembly comprises: A driving unit (40), wherein a driving end of the driving unit (40) is located in the first muffler chamber (101); A connecting portion (50) is arranged at a driving end of the driving portion (40), the connecting portion (50) is located in the first muffler chamber (101), the adjusting portion (30) is fixedly arranged on the connecting portion (50), and the driving portion (40) adjusts the position of the adjusting portion (30) relative to the muffler portion (20) through the connecting portion (50).

6. The muffler device according to claim 5, characterized in that: The connecting portion (50) is a shell-like structure, the connecting portion (50) has a mounting cavity (501), the adjusting portion (30) is arranged in the mounting cavity (501), the adjusting portion (30) is sleeved on the muffler portion (20), and the connecting portion (50) is sleeved on the outside of the muffler portion (20) through the adjusting portion (30).

7. The muffler device according to claim 6, characterized in that: The space between the connecting portion (50) and the adjusting portion (30) forms a second muffler chamber, and the muffler device further comprises: The muffler is arranged in a space formed by the first muffler cavity (101) and the connecting portion (50); and / or the muffler is arranged in the muffler cavity (20); and / or the muffler is arranged in the second muffler cavity.

8. The muffler device according to claim 5, characterized in that: The connecting portion (50) is movably arranged in the first muffler chamber (101) along the length direction of the adjusting portion (30), and the driving portion (40) comprises: A driving member (41), wherein a power output end of the driving member (41) is located on one side of the moving direction of the connecting portion (50), the power output end is movably arranged in the first muffler chamber (101), the power output end is close to or away from the connecting portion (50), and the power output end has a first inclined surface, and an extension direction of the first inclined surface forms an angle with the moving direction of the connecting portion (50); A transmission member (42) is arranged on the connecting portion (50), and a second inclined surface is arranged on the transmission member (42), the second inclined surface is adapted to the first inclined surface, and the first inclined surface and the second inclined surface are driven to cooperate with each other to drive the connecting portion (50) to drive the adjusting portion (30) to move relative to the muffler portion (20).

9. The muffler device according to claim 4, characterized in that: The muffler also includes: A noise collecting device (60) for collecting noise data passing through the airflow inlet (201); A control system is electrically connected to the noise collecting device (60), the noise collecting device (60) transmits collected noise data to the control system, and the control system is electrically connected to the drive component so that the drive component adjusts the position of the adjusting portion (30).

10. The muffler device according to claim 1, characterized in that: The airflow inlet (201) and the airflow outlet (202) of the muffler portion (20) respectively penetrate the first end surface and the second end surface of the first muffler cavity (101), and the muffler device further comprises an expansion cavity (102); The expansion chamber (102) is arranged upstream of the airflow inlet (201) and is in communication with the airflow inlet (201), and a flow area of ​​the expansion chamber (102) is greater than a flow area of ​​the airflow inlet (201); and / or; The expansion chamber (102) is arranged downstream of the airflow outlet (202) and is in communication with the airflow outlet (202); the flow area of ​​the expansion chamber (102) is greater than the flow area of ​​the airflow outlet (202).

11. The muffler device according to claim 10, characterized in that: At least two of the first muffler cavities (101) are provided, and at least two of the first muffler cavities (101) are spaced apart and distributed along the direction of the air flow channel of the muffler portion (20), and one expansion cavity (102) is provided between two adjacent first muffler cavities (101).

12. The muffler device according to claim 10, characterized in that: Along the direction from the airflow inlet (201) to the airflow outlet (202), the size of the expansion chamber (102) is adjustable.

13. The muffler device according to claim 10, characterized in that: The muffler also includes: The sealing portion is annularly arranged on the inner side of the expansion cavity (102); and / or the sealing portion is annularly arranged on the outer side of the expansion cavity (102).

14. The muffler device according to any one of claims 1 to 13, characterized in that: The muffler device comprises: The first shell (10) is provided with the first muffler chamber (101), the first shell (10) has a first end face and a second end face arranged opposite to each other, the first end face is provided with a first opening, the second end face is provided with a second opening, the airflow inlet (201) of the muffler part (20) is connected to the first opening, and the airflow outlet (202) is connected to the second opening.

15. The muffler device according to any one of claims 1 to 13, characterized in that: A plurality of groups of the noise reduction components are arranged in the first noise reduction chamber (101).

16. The muffler device according to any one of claims 1 to 13, characterized in that: At least two of the first muffler chambers (101) are provided, and at least two of the first muffler chambers (101) are spaced apart and distributed along the direction of the air flow channel of the muffler portion (20), and the muffler components in at least two adjacent first muffler chambers (101) are staggeredly distributed.

17. The muffler device according to any one of claims 1 to 13, characterized in that: The muffler device further comprises a protection portion (70); The protective portion (70) is arranged on a side of the first muffler chamber (101) close to the airflow outlet (202), a distance is provided between the protective portion (70) and the airflow outlet (202), and the protective portion (70) is used to protect the airflow outlet (202); and / or, The protective portion (70) is arranged on a side of the first muffler chamber (101) close to the airflow inlet (201), and there is a distance between the protective portion (70) and the airflow inlet (201). The protective portion (70) is used to protect the airflow inlet (201).

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