Exhaust silencer with self-adaptive regulating valve
By setting up an adaptive regulating valve assembly on the exhaust pipe of the car exhaust silencer, the problem of limited silence effect of existing silencers at different speeds is solved, and more efficient noise reduction and fuel consumption reduction is achieved.
Patent Information
- Application Number
- CN202411563579.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-02-11
AI Technical Summary
When the existing automotive exhaust silencer device meets the silence needs of the engine at different speeds, the silence effect is limited, the structure is complex and the cost is high.
An exhaust silencer device with an adaptive regulating valve is designed. By providing a regulating valve assembly on the exhaust pipe, including a fixed seat, an elastic member and a valve plate, the position of the valve plate is adjusted to adapt to the engine speed changes and optimized silencer. distribution of holes to reduce noise.
It realizes that the valve plate position is adaptively adjusted according to different application conditions without increasing volume, improves the silence performance, simplifies the internal structure, and reduces fuel consumption.
Smart Images
Figure CN119412199A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of exhaust silencer systems, and in particular to an exhaust silencer device with an adaptive regulating valve. Background Art
[0002] When the engine is running at a low speed, the exhaust airflow is small, which generates low-frequency noise; when the engine is running at a high speed, the exhaust airflow is large, which generates high-frequency noise. In order to meet the silencing and exhaust requirements of the engine at different speeds, in the prior art, common automobile exhaust muffler devices arrange a series of curved pipes and silencer cotton in a muffler of limited volume to achieve the purpose of eliminating noise, but this type of muffler has limited silencing effect, complex structure and high cost; some use an electronically controlled tuning valve installed on the tail pipe of the muffler device, and control the tuning valve through a set of electronic control devices so that it has different closing angles at different engine speeds to achieve silencing and exhaust requirements, but the control device is complex, the electronic control unit is expensive, the development cycle is long, and generally... It is only used in luxury models; some use a passive tuning valve installed on the core tube of the muffler device to reduce the complexity of the device and reduce costs, but the installation position of the passive tuning valve is limited, and it can only be installed at the end of the core tube inside the muffler. If it is installed inside the core tube, the valve plate will interfere with the inner wall of the core tube, affecting its use; others explore active noise elimination technology, which uses a generator to emit a sound with an opposite phase to the target noise to cancel each other out to achieve the purpose of noise elimination, so as to eliminate noise in a wide frequency band. However, the design of the device is complex and the cost is too high, and it is currently not used in exhaust devices. Summary of the invention
[0003] To solve at least one aspect of the above problems, the present invention provides an exhaust silencer with an adaptive regulating valve, comprising a first exhaust pipe and a regulating valve assembly; the air inlet end of the first exhaust pipe is used to introduce airflow into the first exhaust pipe; at least two channels are provided on the first exhaust pipe, the two channels are respectively provided at opposite positions of the pipe wall of the first exhaust pipe, and the channels extend from the air outlet end of the first exhaust pipe to the air inlet end of the first exhaust pipe along the extension direction of the first exhaust pipe; a plurality of through-silencing holes are provided on the pipe wall of the first exhaust pipe, and the plurality of silencing holes are distributed along the circumference and extension direction of the first exhaust pipe; the regulating valve assembly comprises at least one fixing seat, two elastic members and a valve sheet; the fixing seat is fixedly connected to the first exhaust pipe. on the outer wall of the exhaust pipe near its air inlet end; the valve plate includes a baffle and at least two connecting strips; the shape and size of the baffle match the shape and size of the cross-section of the inner wall of the first exhaust pipe, the baffle is arranged in the first exhaust pipe along a direction perpendicular to the extension direction of the first exhaust pipe, and the baffle is slidably connected to the inner wall of the first exhaust pipe along its extension direction; the connecting strip extends along a direction perpendicular to the extension direction of the first exhaust pipe, the first ends of the two connecting strips are respectively fixedly connected to the opposite sides of the edge of the baffle, the two connecting strips respectively penetrate the two channels, and are respectively slidably connected to the two channels along their extension direction; the first ends of the two elastic members are respectively connected to the second ends of the two connecting strips, and the second ends of the two elastic members are connected to the fixing seat.
[0004] Through the above technical solution, the exhaust gas enters along the air inlet end of the first exhaust pipe and flows out from the silencer hole between the air inlet end of the first exhaust pipe and the valve plate. When the engine speed is low, the exhaust gas flow is small, and the thrust on the valve plate is small, so that the valve plate is located on the side close to the air inlet end of the first exhaust pipe, and there are fewer silencer holes between the air inlet end of the first exhaust pipe and the valve plate, which effectively reduces low-frequency noise while ensuring the circulation of exhaust gas; as the engine speed increases, the exhaust gas flow increases, and the thrust on the valve plate becomes larger, so that the valve plate moves toward the outlet end of the first exhaust pipe, and the silencer holes between the air inlet end of the first exhaust pipe and the valve plate increase, so that the exhaust gas flows smoothly and effectively reduces high-frequency noise, while reducing back pressure, which can effectively reduce fuel consumption. The regulating valve assembly in the present application enables the exhaust silencer device of the present application to adaptively adjust the valve plate position based on different application conditions without increasing the volume, so as to improve the silencer performance while ensuring the smooth circulation of exhaust gas, and at the same time helps to simplify the internal structure of the exhaust silencer device, and the installation position of the regulating valve assembly is not restricted, making its design diversified and flexible.
[0005] Preferably, the size of the silencer hole located near the air inlet end of the first exhaust pipe is smaller than the size of the silencer hole located near the air outlet end. Through the above technical solution, when the exhaust gas flow rate is small, the exhaust demand is small, and the size of the silencer hole near the air inlet end of the first exhaust pipe is designed to be smaller, which helps to improve the impedance and thus helps to reduce low-frequency noise; when the exhaust gas flow rate is large, the exhaust demand is large, and the size of the silencer hole near the air outlet end of the first exhaust pipe is designed to be larger, which ensures the smoothness of the exhaust gas flow and helps to reduce the back pressure, thereby effectively reducing fuel consumption.
[0006] Preferably, two fixing seats are provided, the two fixing seats are respectively fixedly connected to opposite positions on the outer wall of the first exhaust pipe and respectively correspond to the two channels, and the second ends of the two elastic members are respectively connected to the two fixing seats.
[0007] Preferably, an angle between an extension direction of the elastic member and an extension direction of the first exhaust pipe is an acute angle.
[0008] Preferably, the elastic member is a straight spring.
[0009] Preferably, it also includes a shell; the shell is a cylindrical structure, and a first fixing plate and a second fixing plate are arranged in sequence along the extension direction of the shell, the shape and size of the first fixing plate and the shape and size of the second fixing plate both match the shape and size of the cross-section of the inner wall of the shell, the circumferential surface of the first fixing plate is fixedly connected to the inner wall of the shell, the circumferential surface of the second fixing plate is fixedly connected to the inner wall of the shell, and a plurality of ventilation holes are opened on the second fixing plate; the air inlet end of the first exhaust pipe passes through the first fixing plate and is fixedly connected to the first fixing plate, the air outlet end of the first exhaust pipe passes through the second fixing plate and is fixedly connected to the second fixing plate, and the regulating valve assembly is arranged between the first fixing plate and the second fixing plate, and a specific structure for installing the first exhaust pipe is disclosed.
[0010] Preferably, the space enclosed by the first fixing plate, the inner wall of the shell and the second fixing plate is filled with sound-absorbing cotton, which can absorb the noise coming out of the sound-absorbing hole, thereby further improving the sound-absorbing performance.
[0011] Preferably, it also includes a second exhaust pipe; a third fixing plate and a fourth fixing plate are sequentially spaced apart in the shell along its extension direction; the shape and size of the third fixing plate and the shape and size of the fourth fixing plate both match the shape and size of the cross-section of the inner wall of the shell, the third fixing plate is spaced apart on the side of the second fixing plate away from the first fixing plate, the circumferential surface of the third fixing plate is fixedly connected to the inner wall of the shell, and the circumferential surface of the fourth fixing plate is fixedly connected to the inner wall of the shell; the air inlet end of the second exhaust pipe passes through the third fixing plate and is fixedly connected to the third fixing plate, the second exhaust pipe passes through the fourth fixing plate and is fixedly connected to the fourth fixing plate; the air inlet end of the second exhaust pipe is connected to the first exhaust pipe in a non-contact manner.
[0012] Preferably, the axis of the second exhaust pipe coincides with the axis of the first exhaust pipe, and the air inlet end of the second exhaust pipe is arranged opposite to the air outlet end of the first exhaust pipe.
[0013] Preferably, the third fixing plate is provided with a plurality of ventilation holes, and the wall of the second exhaust pipe between the third fixing plate and the fourth fixing plate is provided with a plurality of penetrating silencer holes, and the plurality of silencer holes are distributed along the circumference and axial direction of the second exhaust pipe, which helps to improve the smoothness of exhaust gas circulation and improve the silencer performance.
[0014] Preferably, the space enclosed by the fourth fixing plate, the inner wall of the shell and the third fixing plate is filled with sound-absorbing cotton, which can absorb the noise coming out of the sound-absorbing hole, thereby further improving the sound-absorbing performance.
[0015] The exhaust muffler device with an adaptive regulating valve of the present invention has the following beneficial effects:
[0016] There will be multiple exhaust pipes in the exhaust silencer device. The invention of the present application is that a regulating valve assembly is arranged on one of the exhaust pipes, that is, a baffle sliding along the extension direction is arranged in the exhaust pipe near its outlet end, and a channel is opened on the wall of the exhaust pipe, a connecting strip is connected to the baffle so that the baffle extends out of the exhaust pipe through the connecting strip, and then a fixing seat is arranged on the outer wall of the exhaust pipe, an elastic member is arranged between the fixing seat and the connecting strip, and a plurality of silencer holes are opened on the wall of the exhaust pipe, so that when the engine speed is small, the exhaust gas flow is small, and the thrust on the valve plate is small, so that the valve plate is located on the side close to the air inlet end of the first exhaust pipe, and the silencer holes between the air inlet end of the first exhaust pipe and the valve plate are relatively few, so as to ensure the exhaust gas flow. In the case of air flow, low-frequency noise is effectively reduced; as the engine speed increases, the exhaust gas flow increases, the thrust on the valve plate becomes larger, so that the valve plate moves toward the outlet end of the first exhaust pipe, and the number of silencer holes between the inlet end of the first exhaust pipe and the valve plate increases, so that the exhaust gas flows smoothly and effectively reduces high-frequency noise, while reducing back pressure, which can effectively reduce fuel consumption; by designing the size of the silencer holes on the exhaust pipe close to its inlet end to be smaller, it is possible to increase impedance when the exhaust gas flow is small, which is more helpful to reduce low-frequency noise, and designing the size of the silencer holes close to its outlet end to be larger, which helps to ensure the smoothness of exhaust gas circulation when the exhaust gas flow is large, and at the same time helps to reduce back pressure, thereby effectively reducing fuel consumption. The regulating valve assembly in the present application has a simple structure and is not restricted in the installation position, so that the exhaust silencer device of the present application can adaptively adjust the valve plate position based on different application conditions without increasing the volume, so as to improve the silencer performance while ensuring smooth exhaust gas circulation, and at the same time help to simplify the internal structure of the exhaust silencer device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.
[0018] Figure 1 A partial structural schematic diagram of an exhaust muffler device with an adaptive regulating valve according to an embodiment of the present invention is shown;
[0019] FIG2 shows a schematic structural diagram of a regulating valve assembly of an exhaust muffler device with an adaptive regulating valve according to an embodiment of the present invention;
[0020] FIG3 shows a schematic structural diagram of an exhaust muffler device with an adaptive regulating valve according to an embodiment of the present invention;
[0021] FIG. 4 is a schematic structural diagram of a channel of an exhaust muffler device with an adaptive regulating valve according to an embodiment of the present invention.
[0022] Description of reference numerals:
[0023] 1. Shell; 11. First fixing plate; 12. Fourth fixing plate; 2. First exhaust pipe; 3. Second exhaust pipe; 4. Silence hole; 51. Second fixing plate; 52. Third fixing plate; 6. Vent hole; 7. Passage; 8. Regulating valve assembly; 81. Fixing seat; 82. Straight spring; 83. Valve plate; 831. Blocking plate; 832. Connecting strip; 9. Silence cotton. DETAILED DESCRIPTION
[0024] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.
[0025] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.
[0026] In order to at least partially solve the above-mentioned problems and one or more of other potential problems, an embodiment of the present disclosure proposes an exhaust silencer device with an adaptive regulating valve, including a first exhaust pipe 2 and a regulating valve assembly 8; the air inlet end of the first exhaust pipe 2 is used to introduce airflow into the first exhaust pipe 2; at least two channels 7 are opened on the first exhaust pipe 2, and the two channels 7 are respectively opened at opposite positions of the pipe wall of the first exhaust pipe 2, and the channels 7 extend from the air outlet end of the first exhaust pipe 2 to the air inlet end of the first exhaust pipe 2 along the extension direction of the first exhaust pipe 2; a plurality of through-silencing holes 4 are opened on the pipe wall of the first exhaust pipe 2, and the plurality of silencing holes 4 are distributed along the circumference and extension direction of the first exhaust pipe 2; the regulating valve assembly 8 includes at least one fixing seat 81, two elastic members and a valve sheet 83; the fixing seat 81 is fixedly connected to the first exhaust pipe 2. on the outer wall of the exhaust pipe 2 near its air inlet end; the valve plate 83 includes a baffle 831 and at least two connecting strips 832; the shape and size of the baffle 831 match the shape and size of the cross-section of the inner wall of the first exhaust pipe 2, the baffle 831 is arranged in the first exhaust pipe 2 along a direction perpendicular to the extension direction of the first exhaust pipe 2, and the baffle 831 is slidably connected to the inner wall of the first exhaust pipe 2 along its extension direction; the connecting strip 832 extends along a direction perpendicular to the extension direction of the first exhaust pipe 2, the first ends of the two connecting strips 832 are respectively fixedly connected to the opposite sides of the edge of the baffle 831, the two connecting strips 832 respectively penetrate the two channels 7, and are respectively slidably connected to the two channels 7 along their extension direction; the first ends of the two elastic members are respectively connected to the second ends of the two connecting strips 832, and the second ends of the two elastic members are connected to the fixing seat 81.
[0027] In the prior art, there are multiple exhaust pipes in the exhaust muffler device. The invention of the present application is to set a regulating valve assembly 8 on one of the exhaust pipes. Specifically, Figure 1 As shown in Figure 2, the air inlet end of the first exhaust pipe 2 is used to introduce the airflow into the first exhaust pipe 2; at least two channels 7 are opened on the first exhaust pipe 2, and the two channels 7 are respectively opened at opposite positions of the pipe wall of the first exhaust pipe 2, and the channels 7 extend from the air outlet end of the first exhaust pipe 2 to the air inlet end of the first exhaust pipe 2 along the extension direction of the first exhaust pipe 2; a plurality of through-silencing holes 4 are opened on the pipe wall of the first exhaust pipe 2, and the plurality of silencer holes 4 are distributed along the circumference and extension directions of the first exhaust pipe 2. Preferably, the size of the silencer holes 4 on the first exhaust pipe 2 located near its air inlet end is smaller than the size of the silencer holes 4 located near its air outlet end.
[0028] The regulating valve assembly 8 includes at least one fixing seat 81, two elastic members and a valve plate 83; the fixing seat 81 is fixedly connected to the outer wall of the first exhaust pipe 2 near its air inlet end; the valve plate 83 includes a baffle 831 and at least two connecting strips 832; the shape and size of the baffle 831 match the shape and size of the cross-section of the inner wall of the first exhaust pipe 2, the baffle 831 is arranged in the first exhaust pipe 2 along a direction perpendicular to the extension direction of the first exhaust pipe 2, and the baffle 831 is slidably connected to the inner wall of the first exhaust pipe 2 along its extension direction; the number of connecting strips 832 is equal to the number of channels 7, the connecting strips 832 extend in a direction perpendicular to the extension direction of the first exhaust pipe 2, and the two connecting strips 83 2 are respectively fixedly connected to the opposite ends of the edge of the baffle 831, the two connecting strips 832 respectively penetrate the two channels 7, and are respectively slidably connected to the two channels 7 along their extension direction; the elastic member is preferably a straight spring 82, the first ends of the two elastic members are respectively connected to the second ends of the two connecting strips 832, the second ends of the two elastic members are connected to the fixing seat 81, preferably, two fixing seats 81 are provided, the two fixing seats 81 are respectively fixedly connected to the opposite ends of the outer wall of the first exhaust pipe 2, and respectively correspond to the two channels 7, the second ends of the two elastic members are respectively connected to the two fixing seats 81, and the angle between the extension direction of the elastic member and the extension direction of the first exhaust pipe 2 is an acute angle.
[0029] More specifically, in some embodiments, as shown in Figures 3 and 4, the exhaust silencer of the present application includes a shell 1, a first exhaust pipe 2 and a regulating valve assembly 8; the shell 1 is a cylindrical structure, and a first fixing plate 11 and a second fixing plate 51 are sequentially arranged along its extension direction in the shell 1. The shape and size of the first fixing plate 11 and the shape and size of the second fixing plate 51 match the shape and size of the cross-section of the inner wall of the shell 1. The circumferential surface of the first fixing plate 11 is fixedly connected to the inner wall of the shell 1, and the circumferential surface of the second fixing plate 51 is fixedly connected to the inner wall of the shell 1. A plurality of ventilation holes 6 are opened on the second fixing plate 51; the air inlet end of the first exhaust pipe 2 passes through the first fixing plate 11 and is fixedly connected to the first fixing plate 11, the air outlet end of the first exhaust pipe 2 passes through the second fixing plate 51 and is fixedly connected to the second fixing plate 51, the silencer hole 4 on the first exhaust pipe 2 is located between the first fixing plate 11 and the second fixing plate 51, and the regulating valve assembly 8 is arranged between the first fixing plate 11 and the second fixing plate 51.
[0030] In a specific embodiment, if Figure 1As shown in FIG. 4 , the exhaust silencer of the present application includes a shell 1, a first exhaust pipe 2, a second exhaust pipe 3 and a regulating valve assembly 8; the shell 1 is a cylindrical structure, and a first fixing plate 11, a second fixing plate 51, a third fixing plate 52 and a fourth fixing plate 12 are sequentially arranged in the shell 1 along its extension direction; the shape and size of the first fixing plate 11, the shape and size of the second fixing plate 51, the shape and size of the third fixing plate 52 and the shape and size of the fourth fixing plate 12 all match the shape and size of the cross-section of the inner wall of the shell 1; the first fixing plate 11 is arranged near the first end of the shell 1, and the circumference of the first fixing plate 11 is fixedly connected to the inner wall of the shell 1; the circumference of the second fixing plate 51 is fixedly connected to the inner wall of the shell 1, and a plurality of vents 6 are opened on the second fixing plate 51; the circumference of the third fixing plate 52 is fixedly connected to the inner wall of the shell 1; the fourth fixing plate 12 is arranged near the second end of the shell 1, and the circumference of the fourth fixing plate 12 is fixedly connected to the inner wall of the shell 1.
[0031] The extension direction of the first exhaust pipe 2 and the extension direction of the second exhaust pipe 3 are both the same as the extension direction of the shell 1; the air inlet end of the first exhaust pipe 2 is used to introduce the airflow into the first exhaust pipe 2; the air inlet end of the first exhaust pipe 2 passes through the first fixing plate 11 and is fixedly connected to the first fixing plate 11, and the outer wall of the air inlet end of the first exhaust pipe 2 is fixedly connected to the inner wall of the first end of the shell 1; the air outlet end of the first exhaust pipe 2 passes through the second fixing plate 51 and is fixedly connected to the second fixing plate 51. At least two channels 7 are provided on the first exhaust pipe 2, and the two channels 7 are respectively provided at opposite positions of the pipe wall of the first exhaust pipe 2, and the channels 7 extend from the outlet end of the first exhaust pipe 2 to the inlet end of the first exhaust pipe 2 along the extension direction of the first exhaust pipe 2; a plurality of through-silencing holes 4 are provided on the pipe wall of the first exhaust pipe 2 between the first fixing plate 11 and the second fixing plate 51, and the plurality ofsilencing holes 4 are distributed along the circumference and extension direction of the first exhaust pipe 2; preferably, the size of the silencer holes 4 on the first exhaust pipe 2 located near its inlet end is smaller than the size of the silencer holes 4 located near its outlet end.
[0032] The regulating valve assembly 8 is installed on the first exhaust pipe 2, and the regulating valve assembly 8 is arranged between the first fixing plate 11 and the second fixing plate 51. Specifically, the regulating valve assembly 8 includes at least one fixing seat 81, two elastic members and a valve plate 83; the fixing seat 81 is fixedly connected to the outer wall of the first exhaust pipe 2 near its intake end; the valve plate 83 includes a baffle 831 and at least two connecting strips 832; the shape and size of the baffle 831 match the shape and size of the cross-section of the inner wall of the first exhaust pipe 2, the baffle 831 is arranged in the first exhaust pipe 2 along a direction perpendicular to the extension direction of the first exhaust pipe 2, and the baffle 831 is slidably connected to the inner wall of the first exhaust pipe 2 along its extension direction; the connecting strip 832 is connected along a direction perpendicular to the extension direction of the first exhaust pipe 2 The first ends of the two connecting strips 832 are respectively fixedly connected to the opposite sides of the edge of the baffle 831, and the two connecting strips 832 are respectively passed through the two channels 7, and are respectively slidably connected to the two channels 7 along their extension direction; the elastic member is preferably a straight spring 82, and the first ends of the two elastic members are respectively connected to the second ends of the two connecting strips 832, and the second ends of the two elastic members are connected to the fixing seat 81. Preferably, there are two fixing seats 81, and the two fixing seats 81 are respectively fixedly connected to the opposite sides of the outer wall of the first exhaust pipe 2, and respectively correspond to the two channels 7. The second ends of the two elastic members are respectively connected to the two fixing seats 81, and the angle between the extension direction of the elastic member and the extension direction of the first exhaust pipe 2 is an acute angle. Preferably, the space enclosed by the first fixing plate 11, the inner wall of the shell 1 and the second fixing plate 51 is filled with silencer cotton 9.
[0033] The second exhaust pipe 3 is staggered or opposite to the first exhaust pipe 2. In the present embodiment, the second exhaust pipe 3 is opposite to the first exhaust pipe 2. Specifically, the axis of the second exhaust pipe 3 coincides with the axis of the first exhaust pipe 2. The air inlet end of the second exhaust pipe 3 is opposite to the air outlet end of the first exhaust pipe 2. The air inlet end of the second exhaust pipe 3 passes through the third fixing plate 52 and is fixedly connected to the third fixing plate 52. The air inlet end of the second exhaust pipe 3 is connected to the first exhaust pipe 2 in a non-contact manner. Specifically, the exhaust gas is discharged from the first exhaust pipe 2. The pipe 2 flows into the space enclosed by the second fixing plate 51, the third fixing plate 52 and the inner wall of the shell 1 through its silencer hole 4 and the vent hole 6 on the second fixing plate 51, and the air inlet end of the second exhaust pipe 3 is connected with this space, so that the exhaust gas in this space flows through the second exhaust pipe 3, and the air inlet end of the second exhaust pipe 3 is connected with the first exhaust pipe 2 in a non-contact manner; the second exhaust pipe 3 penetrates the fourth fixing plate 12 and is fixedly connected to the fourth fixing plate 12, and the outer wall of the air outlet end of the second exhaust pipe 3 is fixedly connected to the inner wall of the second end of the shell 1. Preferably, a plurality of vent holes 6 are provided on the third fixing plate 52, and a plurality of silencer holes 4 are provided on the wall of the second exhaust pipe 3 between the third fixing plate 52 and the fourth fixing plate 12, and the plurality of silencer holes 4 are distributed along the circumference and axial direction of the second exhaust pipe 3; more preferably, the space enclosed by the fourth fixing plate 12, the inner wall of the shell 1 and the third fixing plate 52 is filled with silencer cotton 9.
[0034] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.
Claims
1. An exhaust silencer with an adaptive regulating valve, characterized in that: It comprises a first exhaust pipe (2) and a regulating valve assembly (8); The air inlet end of the first exhaust pipe (2) is used to introduce airflow into the first exhaust pipe (2); at least two channels (7) are provided on the first exhaust pipe (2), the two channels (7) are respectively provided at opposite positions of the pipe wall of the first exhaust pipe (2), and the channels (7) extend from the air outlet end of the first exhaust pipe (2) to the air inlet end of the first exhaust pipe (2) along the extension direction of the first exhaust pipe (2); a plurality of muffler holes (4) are provided on the pipe wall of the first exhaust pipe (2), and the plurality of muffler holes (4) are distributed along the circumference and extension direction of the first exhaust pipe (2); The regulating valve assembly (8) comprises at least one fixing seat (81), two elastic members and a valve plate (83); the fixing seat (81) is fixedly connected to the outer wall of the first exhaust pipe (2) near its air inlet end; the valve plate (83) comprises a baffle plate (831) and at least two connecting strips (832); the shape and size of the baffle plate (831) match the shape and size of the cross section of the inner wall of the first exhaust pipe (2); the baffle plate (831) is arranged in the first exhaust pipe (2) along a direction perpendicular to the extension direction of the first exhaust pipe (2); the baffle plate (831) and the valve plate (832) are connected to each other. The inner wall of the first exhaust pipe (2) is slidably connected along its extension direction; the connecting strip (832) extends in a direction perpendicular to the extension direction of the first exhaust pipe (2); the first ends of the two connecting strips (832) are respectively fixedly connected to opposite sides of the edge of the baffle (831); the two connecting strips (832) respectively penetrate the two channels (7) and are respectively slidably connected to the two channels (7) along their extension direction; the first ends of the two elastic members are respectively connected to the second ends of the two connecting strips (832); and the second ends of the two elastic members are connected to the fixing seat (81).
2. An exhaust silencer with an adaptive regulating valve according to claim 1, characterized in that: The size of the silencer hole (4) located on the first exhaust pipe (2) near its air inlet end is smaller than the size of the silencer hole (4) located near its air outlet end.
3. The exhaust muffler device with an adaptive regulating valve according to claim 1, characterized in that: Two fixing seats (81) are provided. The two fixing seats (81) are respectively fixedly connected to opposite positions on the outer wall of the first exhaust pipe (2) and respectively correspond to the two channels (7). The second ends of the two elastic members are respectively connected to the two fixing seats (81).
4. The exhaust muffler device with an adaptive regulating valve according to claim 3, characterized in that: The included angle between the extension direction of the elastic member and the extension direction of the first exhaust pipe (2) is an acute angle.
5. An exhaust silencer with an adaptive regulating valve according to any one of claims 1 to 4, characterized in that: The invention also comprises a shell (1); the shell (1) is a cylindrical structure, a first fixing plate (11) and a second fixing plate (51) are sequentially arranged in the shell (1) along its extension direction, the shape and size of the first fixing plate (11) and the shape and size of the second fixing plate (51) are matched with the shape and size of the cross section of the inner wall of the shell (1), the peripheral surface of the first fixing plate (11) is fixedly connected to the inner wall of the shell (1), the peripheral surface of the second fixing plate (51) is fixedly connected to the inner wall of the shell (1), and a plurality of vent holes (6) are provided on the second fixing plate (51); the air inlet end of the first exhaust pipe (2) passes through the first fixing plate (11) and is fixedly connected to the first fixing plate (11), the air outlet end of the first exhaust pipe (2) passes through the second fixing plate (51) and is fixedly connected to the second fixing plate (51), and the regulating valve assembly (8) is arranged between the first fixing plate (11) and the second fixing plate (51).
6. The exhaust muffler device with an adaptive regulating valve according to claim 5, characterized in that: The space enclosed by the first fixing plate (11), the inner wall of the shell (1) and the second fixing plate (51) is filled with sound-absorbing cotton (9).
7. The exhaust silencer with an adaptive regulating valve according to claim 5, characterized in that: The invention also comprises a second exhaust pipe (3); a third fixing plate (52) and a fourth fixing plate (12) are arranged in sequence in the shell (1) along its extension direction; the shape and size of the third fixing plate (52) and the shape and size of the fourth fixing plate (12) are matched with the shape and size of the cross section of the inner wall of the shell (1); the third fixing plate (52) is arranged at a distance from the first fixing plate (11) on the side of the second fixing plate (51); the peripheral surface of the third fixing plate (52) is fixedly connected to the inner wall of the shell (1); the peripheral surface of the fourth fixing plate (12) is fixedly connected to the inner wall of the shell (1); the air inlet end of the second exhaust pipe (3) passes through the third fixing plate (52) and is fixedly connected to the third fixing plate (52); the second exhaust pipe (3) passes through the fourth fixing plate (12) and is fixedly connected to the fourth fixing plate (12); the air inlet end of the second exhaust pipe (3) is connected to the first exhaust pipe (2) in a non-contact manner.
8. The exhaust muffler device with an adaptive regulating valve according to claim 7, characterized in that: The axis of the second exhaust pipe (3) coincides with the axis of the first exhaust pipe (2), and the air inlet end of the second exhaust pipe (3) is arranged opposite to the air outlet end of the first exhaust pipe (2).
9. The exhaust silencer with an adaptive regulating valve according to claim 7, characterized in that: The third fixing plate (52) is provided with a plurality of ventilation holes (6), and a plurality of through-going silencer holes (4) are provided on the wall of the second exhaust pipe (3) between the third fixing plate (52) and the fourth fixing plate (12), and the plurality of silencer holes (4) are distributed along the circumference and axial direction of the second exhaust pipe (3).
10. An exhaust silencer with an adaptive regulating valve according to claim 9, characterized in that: The space enclosed by the fourth fixing plate (12), the inner wall of the shell (1) and the third fixing plate (52) is filled with sound-absorbing cotton (9).