Silencing device and vehicle

Abstract

The utility model discloses a silencing device and a vehicle, and relates to the silencing device technical field, the silencing device comprises: a housing, at least one silencing pipe, an exhaust pipe and an energy storage structure, the housing defines a silencing cavity, at least part of the silencing pipe is arranged in the silencing cavity and is communicated with the silencing cavity, and the energy storage structure is arranged in the silencing cavity. At least part of the exhaust pipe is arranged in the silencing cavity and communicates with the silencing cavity, the energy storage structure is arranged in the silencing cavity, and the energy storage structure is configured to absorb heat and store heat under the condition that the ambient temperature is larger than or equal to the preset temperature. And the controller is further configured to release heat when the temperature of the surrounding environment is lower than the preset temperature. According to the silencing device, the probability that the condensate water in the silencing cavity is frozen can be reduced, the condensate water in the silencing cavity can be smoothly discharged, the probability that the condensate water in the silencing device is frozen to block the exhaust pipe under the extremely cold working condition can be effectively reduced, and the reliability of the silencing device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction device technology, and in particular to a noise reduction device and a vehicle having the noise reduction device. Background Technology

[0002] In related technologies, after a car engine runs, it produces exhaust gas containing water vapor. Some of this water vapor is discharged through the exhaust tailpipe, while the rest condenses into condensate and accumulates inside the muffler. Under extremely cold conditions, after the vehicle is turned off, the condensate that cannot be discharged from the muffler in time freezes. When the vehicle is restarted and is idling or operating at low speed and light load, the accumulated ice in the muffler can block the exhaust pipe, preventing exhaust gas from being discharged and potentially causing the muffler to crack. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a silencing device that can reduce the probability of condensate freezing in the silencing cavity, allow the condensate to drain smoothly, effectively reduce the probability of condensate freezing and clogging the exhaust pipe under extremely cold conditions, and improve the reliability of the silencing device.

[0004] This utility model also proposes a vehicle using the above-mentioned noise reduction device.

[0005] A noise reduction device according to a first aspect of the present invention includes: a housing, at least one silencer pipe, an exhaust pipe, and an energy storage structure. The housing defines a noise reduction cavity. At least a portion of the silencer pipe is disposed within and communicates with the noise reduction cavity. At least a portion of the exhaust pipe is disposed within and communicates with the noise reduction cavity. The energy storage structure is disposed within the noise reduction cavity. The energy storage structure is configured to absorb and store heat when the ambient temperature is greater than or equal to a preset temperature, and is further configured to release heat when the ambient temperature is less than the preset temperature.

[0006] According to the silencing device of the present application embodiment, the energy storage structure can absorb or release heat. By setting the energy storage structure, the probability of condensate freezing in the silencing cavity can be reduced, and the condensate in the silencing cavity can be discharged smoothly. This can effectively reduce the probability of condensate freezing and clogging the exhaust pipe in the silencing device under extremely cold conditions, which is beneficial to improving the reliability of the silencing device.

[0007] According to some embodiments of the present invention, the outer shell is formed with a drain hole communicating with the silencing cavity, and the drain hole is located at the lowest position of the outer shell along the height direction of the silencing device.

[0008] According to some embodiments of the present invention, the outer shell includes: an outer shell body and a drain shell, the outer shell body and the drain shell together define the sound-absorbing cavity, the drain shell is located below the outer shell body and fixed to the outer shell body, and the drain shell has the drain hole.

[0009] According to some embodiments of the present invention, the drain shell includes: a drain shell bottom wall and a drain shell peripheral wall. The drain shell peripheral wall is disposed around the drain shell bottom wall circumferentially, so that the drain shell bottom wall and the drain shell peripheral wall together define a first space open toward the outer shell body. The drain shell bottom wall is formed with the drain hole. The outer shell body defines a second space. The outer shell body is formed with a connecting hole opposite to the open end of the first space. The connecting hole connects the first space and the second space. The first space, the second space and the connecting hole constitute the sound-absorbing cavity.

[0010] According to some embodiments of the present invention, at least one of the first space and the second space is provided with the energy storage structure.

[0011] According to some embodiments of the present invention, the silencing device further includes: a partition structure, the partition structure being disposed within the silencing cavity and fixed to the outer shell, the partition structure dividing the silencing cavity into multiple sub-silencing cavities, the multiple sub-silencing cavities being arranged sequentially along a first direction, the first direction being perpendicular to the height direction of the silencing device, the silencing pipe and the exhaust pipe being disposed on the partition structure, the lower end of the partition structure forming a connecting port, the connecting port connecting two adjacent sub-silencing cavities.

[0012] According to some embodiments of the present invention, the partition structure includes: a plurality of partition plates, the plurality of partition plates being arranged sequentially at intervals along the first direction to divide the silencing cavity into a plurality of sub-silencing cavities, and the lower end of the partition plate forming the communication port.

[0013] According to some embodiments of the present invention, the silencing device further includes: a gas-liquid separation structure, the gas-liquid separation structure being fixed inside the silencing cavity, at least one of the silencing pipes being configured as an air inlet pipe, and the gas-liquid separation structure being correspondingly arranged with the outlet end of the air inlet pipe.

[0014] According to some embodiments of the present invention, the gas-liquid separation structure includes: a connecting bracket, a mounting shaft, and a spiral guide vane. The connecting bracket is disposed at the outlet end, the mounting shaft is fixedly connected to the connecting bracket and extends along the axial direction of the air inlet pipe, the mounting shaft extends away from the direction of the air inlet pipe, and the spiral guide vane is fixed to the outer peripheral wall of the mounting shaft and extends along the axial direction of the mounting shaft.

[0015] The vehicle according to a second aspect of the present invention includes the muffler described in the above embodiments.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a noise reduction device according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the internal structure of a silencer according to an embodiment of this application;

[0020] Figure 3 This is a bottom view of a noise reduction device according to an embodiment of this application;

[0021] Figure 4 yes Figure 3 Schematic diagram of the cross section at point AA;

[0022] Figure 5 yes Figure 4 A magnified view of a portion of region B in the middle;

[0023] Figure 6 This is a schematic diagram of a gas-liquid separation structure according to an embodiment of this application.

[0024] Figure label:

[0025] Silencing device 1,

[0026] 10 outer shell, 11 silencing cavity, 111 sub-silencing cavity, 12 outer shell body, 121 second space, 122 connecting hole, 123 outer shell peripheral wall, 124 outer shell end wall.

[0027] Drainage shell 13, drainage hole 131, bottom wall of drainage shell 132, peripheral wall of drainage shell 133, first space 134.

[0028] Silencer 20, exhaust port 21, intake pipe 22

[0029] Exhaust pipe 30,

[0030] Energy storage structure 40,

[0031] Separator structure 50, separator plate 51, connecting port 511, first through hole 512.

[0032] Gas-liquid separation structure 60, connecting bracket 61, mounting shaft 62, spiral guide vane 63.

[0033] Hook assembly 70,

[0034] First partition plate 81, second partition plate 82, third partition plate 83, first sub-anechoic cavity 84, second sub-anechoic cavity 85, third sub-anechoic cavity 86, fourth sub-anechoic cavity 87. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] The following is for reference. Figures 1-6 Description of a noise reduction device 1 according to an embodiment of the present utility model.

[0037] According to the first aspect of the present invention, the silencing device 1, such as Figures 1-6 As shown, the silencing device 1 may include: a housing 10, at least one silencing pipe 20, an exhaust pipe 30, and an energy storage structure 40. The housing 10 defines a silencing cavity 11. At least a portion of the silencing pipe 20 is disposed within and communicates with the silencing cavity 11. At least a portion of the exhaust pipe 30 is disposed within and communicates with the silencing cavity 11. The energy storage structure 40 is disposed within the silencing cavity 11. The energy storage structure 40 is configured to absorb and store heat when the ambient temperature is greater than or equal to a preset temperature, and is also configured to release heat when the ambient temperature is less than the preset temperature.

[0038] It should be noted that when a car engine runs, it produces exhaust gas containing water vapor. Some of this water vapor is expelled through the exhaust tailpipe, while the rest condenses and accumulates in the muffler. In extremely cold conditions, after the vehicle is turned off, the condensate that cannot be discharged from the muffler in time freezes. When the vehicle is restarted and is idling or operating at low speed and light load, the accumulated ice in the muffler can block the exhaust pipe, preventing exhaust gas from being discharged and potentially causing problems such as the muffler cracking.

[0039] Based on this, this application proposes a muffler 1, in which the outer casing 10 defines a muffler cavity 11. Exhaust gas from the engine can enter the muffler cavity 11, thereby reducing exhaust noise and minimizing noise interference to occupants inside and outside the vehicle. The muffler cavity 11 provides a buffer space for the high-speed flowing exhaust gas. When exhaust gas enters the muffler cavity 11 after being discharged from the engine, the sudden increase in space within the muffler cavity 11 rapidly reduces the airflow velocity and alleviates pressure, thus reducing turbulence and eddies in the exhaust gas and allowing it to flow more smoothly, effectively reducing exhaust noise.

[0040] The muffler 1 may be provided with at least one muffler pipe 20. At least a portion of the muffler pipe 20 may be located within the muffler cavity 11. A portion or all of the structure of the muffler pipe 20 may be located within the muffler cavity 11, and the muffler pipe 20 may communicate with the muffler cavity 11. When a portion of the muffler pipe 20 is located within the muffler cavity 11, the muffler pipe 20 may be configured as an air intake pipe 22. At least one muffler pipe 20 may be configured as an air intake pipe 22. The muffler pipe 20 configured as an air intake pipe 22 may pass through the outer casing 10, allowing exhaust gas to enter the muffler cavity 11 through the air intake pipe 22. At least a portion of the exhaust pipe 30 may be located within the muffler cavity 11. The exhaust pipe 30 may communicate with the muffler cavity 11 and may pass through the outer casing 10, allowing exhaust gas within the muffler cavity 11 to exit through the exhaust pipe 30. Exhaust gas can enter the muffler chamber 11 through the intake pipe 22. After the noise is reduced in the muffler chamber 11, the exhaust gas can be discharged from the muffler chamber 11 through the exhaust pipe 30.

[0041] As an example, multiple muffler pipes 20 can be provided inside the muffler cavity 11. Multiple muffler pipes 20 can make the sound wave propagation path inside the muffler cavity 11 more complex. The sound waves can be continuously reflected and interfered between the muffler pipes 20 and between the muffler pipes 20 and the inner wall of the muffler cavity 11. This can further effectively reduce the noise intensity and further reduce the turbulence and eddy current phenomenon of exhaust gas, making the exhaust gas flow more stably. This is beneficial to improving the working efficiency of the muffler device 1 and improving the comfort of the vehicle.

[0042] The muffler 1 has an energy storage structure 40, which can be located inside the muffler cavity 11. The energy storage structure 40 can absorb or release heat within the muffler cavity 11. When the ambient temperature is greater than or equal to a preset temperature, the energy storage structure 40 can absorb and store heat. When the ambient temperature is lower than the preset temperature, the energy storage structure 40 can release heat. During normal vehicle operation, high-temperature exhaust gas enters the muffler 1, and water vapor in the exhaust gas can condense into condensate, which can then be discharged from the muffler cavity 11. When the ambient temperature around the energy storage structure 40 is greater than or equal to the preset temperature, the energy storage structure 40 can absorb heat, specifically the heat emitted by the high-temperature exhaust gas within the muffler cavity 11, thus storing energy. When the vehicle is turned off, the muffler 1 gradually cools. If the ambient temperature around the energy storage structure 40 is lower than the preset temperature, the energy storage structure 40 can release heat, reducing the probability of condensate freezing within the muffler cavity 11 and allowing the condensate to continue to drain smoothly.

[0043] In extremely cold conditions, if the condensate freezes, the ice will block the drain outlet of the muffler 1, preventing further drainage. Accumulated ice may also block the exhaust pipe 30, potentially causing the muffler 1 to rupture. The energy storage structure 40 can release heat to raise the temperature of the muffler 1. This structure reduces the probability of condensate freezing, promotes the continued drainage of condensate from the muffler cavity 11, and decreases the likelihood of condensate freezing and blocking the exhaust pipe 30, thus improving the reliability of the muffler 1.

[0044] In this embodiment of the application, the energy storage structure 40 can absorb or release heat. By setting the energy storage structure 40, the probability of condensate freezing in the muffler 11 can be reduced, and the condensate in the muffler 11 can be discharged smoothly. This can effectively reduce the probability of condensate freezing and blocking the exhaust pipe 30 in the muffler 1 under extremely cold conditions, which is beneficial to improving the reliability of the muffler 1.

[0045] As an example, such as Figures 2-3 As shown, one of the muffler pipes 20 is constructed as an intake pipe 22. Along the length of the muffler device 1, the intake pipe 22 can be located on one side of the muffler device 1, and the exhaust pipe 30 can be located on the other side of the muffler device 1. Exhaust gas can enter the muffler cavity 11 from one side of the muffler device 1 and exit the muffler cavity 11 from the other side of the muffler device 1. This fully utilizes the muffler cavity 11, extends the propagation path of sound waves within the muffler cavity 11, and further effectively reduces noise and improves the muffler effect. Furthermore, the engine's exhaust manifold can be connected to the intake pipe 22, and the car's exhaust tailpipe can be connected to the exhaust pipe 22, facilitating the connection of the muffler device 1 to the engine's exhaust manifold and the car's exhaust tailpipe, and allowing for the rational planning of the muffler device 1's installation position. When the muffler device 1 is as follows... Figure 1When the direction is set, the length direction of the muffler 1 is... Figure 3 The X-direction in the middle.

[0046] As an example, such as Figure 1 As shown, the muffler 1 can be connected to multiple hook assemblies 70. The multiple hook assemblies 70 can be respectively located on both sides of the muffler 1 along its length. The hook assemblies 70 can be welded to the housing 10. The hook assemblies 70 can be connected to the vehicle body or frame hooks via rubber hangers, thereby achieving the effect of installing the muffler 1 on the vehicle.

[0047] As an example, such as Figure 2 and Figure 4 As shown, the muffler 20 can be provided with exhaust holes 21. There can be multiple exhaust holes 21, which can be located at different positions on the muffler 20 and can be arranged in different ways on the muffler 20. The exhaust holes 21 can connect the muffler 20 and the silencing cavity 11. By setting the exhaust holes 21, sound wave scattering can be triggered, which can further effectively reduce the noise intensity. In addition, the exhaust holes 21 can balance the airflow distribution around the muffler 20. When exhaust gas passes through the muffler 20, some exhaust gas will flow out or into the muffler 20 through the exhaust holes 21, thereby adjusting the flow speed and pressure distribution of the exhaust gas, reducing the local concentration and turbulence of exhaust gas, and making the exhaust gas pass through the silencing cavity 11 more smoothly, further effectively reducing exhaust noise.

[0048] By rationally designing the size, shape, spacing, and distribution of the exhaust holes 21, the silencer 20 can have different response characteristics to sound waves of different frequencies. By adjusting the parameters of the holes, the silencer 20 can achieve better noise reduction effect within a specific frequency range, meet different noise reduction needs, and improve the practicality of the silencer device 1.

[0049] In some embodiments of this utility model, the energy storage structure 40 can be made of phase change energy storage materials such as paraffin wax or molten salt. This application uses paraffin wax as an example for illustration. Paraffin wax has a high heat of fusion and can absorb or release a large amount of heat during the phase change process. Paraffin wax can change from a solid to a liquid state at high temperatures. When the ambient temperature rises above the melting point of paraffin wax, the paraffin wax melts, absorbs heat, and stores heat. Paraffin wax can change from a liquid to a solid state at low temperatures. When the ambient temperature drops below the solidification point of paraffin wax, the paraffin wax solidifies and can release heat.

[0050] The energy storage structure 40 is made of paraffin wax. Paraffin wax can solidify or melt according to changes in ambient temperature. Paraffin wax itself can absorb or release a large amount of heat, making the energy storage structure 40 simple. Moreover, paraffin wax is chemically stable at room temperature and has good corrosion resistance and oxidation resistance. Paraffin wax can maintain stable performance during long-term use, thereby reducing the problem of decreased energy storage efficiency or material damage of the energy storage structure 40, which is conducive to extending the service life of the energy storage structure 40 and reducing costs.

[0051] In some embodiments of this utility model, the outer shell 10 is formed with a drain hole 131 communicating with the silencing cavity 11. Along the height direction of the silencing device 1, the drain hole 131 is located at the lowest position of the outer shell 10.

[0052] The exhaust gas entering the silencing cavity 11 contains water vapor, which can condense into condensate inside the silencing cavity 11. The outer casing 10 can also form a drain hole 131 (i.e., the drain outlet of the silencing device 1 in the above embodiment). The drain hole 131 can communicate with the silencing cavity 11, and the condensate can be discharged from the silencing cavity 11 through the drain hole 131. The condensate can be discharged to the external environment, reducing the risk that the condensate will affect the noise reduction effect of the silencing device 1. Along the height direction of the silencing device 1, the drain hole 131 can be located at the lowest position of the outer casing 10. When the silencing device 1... Figure 4 When setting the direction, the height direction of the muffler 1 can be... Figure 4 In the Z-direction, the height direction of the muffler 1 can be parallel to the height direction of the vehicle. Condensate in the muffler cavity 11 can flow to the drain hole 131 under gravity, facilitating timely drainage of the muffler cavity 11. This reduces the probability of condensate accumulation in the muffler cavity 11, minimizing its impact on the muffler effect, improving the reliability of the muffler 1, and reducing the probability of water corrosion of the internal structure, thus extending its service life.

[0053] In some embodiments of this utility model, such as Figure 1 As shown, the outer casing 10 may include: an outer casing body 12 and a drain shell 13. The outer casing body 12 and the drain shell 13 together define a sound-absorbing cavity 11. The drain shell 13 is located below the outer casing body 12 and is fixed to the outer casing body 12. The drain shell 13 has a drain hole 131.

[0054] The outer casing 12 and the drain shell 13 together define the silencing cavity 11. The drain shell 13 and the outer casing 12 can be arranged along the height of the exhaust device, with the drain shell 13 located below the outer casing 12. The drain shell 13 can be fixed to the outer casing 12. The outer casing 12 and the drain shell 13 can be fixedly connected by welding, snap-fitting, or other methods. If either the outer casing 12 or the drain shell 13 is damaged, maintenance personnel can easily repair or replace either the outer casing 12 or the drain shell 13 separately, reducing maintenance costs and difficulty. The drain shell 13 can have a drain hole 131, which can be located at the bottom of the silencing cavity 11. Condensate in the silencing cavity 11 can flow naturally to the drain shell 13 under gravity and be discharged from the silencing cavity 11 through the drain hole 131. As long as condensate is generated in the silencing cavity 11, the condensate will be discharged from the silencing cavity 11 under gravity, reducing the risk of condensate accumulation in the silencing cavity 11 and improving drainage efficiency.

[0055] As an example, such as Figure 1 As shown, the outer casing 12 may include a peripheral wall 123 and two end walls 124. The peripheral wall 123 may be constructed as a ring structure, and the two end walls 124 may be respectively disposed on both sides of the peripheral wall 123 along the length of the silencing device 1. The peripheral wall 123 and the two end walls 124 may be welded together, or the peripheral wall 123 and the two end walls 124 may be integrally formed. The peripheral wall 123 and the two end walls 124 may together define at least a portion of the silencing cavity 11. The intake pipe 22 may be fitted with one of the end walls 124 and may pass through one of the end walls 124. The exhaust pipe 30 may be fitted with the other end wall 124 and may pass through the other end wall 124.

[0056] In some embodiments of this utility model, such as Figure 5 As shown, the drain shell 13 may include: a drain shell bottom wall 132 and a drain shell peripheral wall 133. The drain shell peripheral wall 133 is arranged around the drain shell bottom wall 132 in the circumferential direction, so that the drain shell bottom wall 132 and the drain shell peripheral wall 133 together define a first space 134 open toward the outer shell body 12. The drain shell bottom wall 132 is formed with a drain hole 131. The outer shell body 12 defines a second space 121. The outer shell body 12 is formed with a connecting hole 122 opposite to the open end of the first space 134. The connecting hole 122 connects the first space 134 and the second space 121. The first space 134, the second space 121 and the connecting hole 122 constitute a sound-absorbing cavity 11.

[0057] The peripheral wall 133 of the drain shell can be arranged around the bottom wall 132 of the drain shell in the circumferential direction. The peripheral wall 133 of the drain shell can be fixedly connected to the outer shell body 12, so that the drain shell 13 can be fixed to the outer shell body 12. The bottom wall 132 of the drain shell can be spaced apart from the outer shell body 12. The bottom wall 132 of the drain shell and the peripheral wall 133 of the drain shell can jointly define a first space 134, which can be open toward the outer shell body 12. The outer shell body 12 can define a second space 121. The outer shell body 12 can be formed with a connecting hole 122. The connecting hole 122 can be located at the lowest position of the outer shell body 12 and can penetrate the outer shell peripheral wall 123 along the thickness direction of the outer shell peripheral wall 123. Along the height direction of the silencing device 1, the connecting hole 122 can be positioned opposite to the open end of the first space 134. The first space 134 and the second space 121 can be connected through the connecting hole 122. The first space 134, the second space 121 and the connecting hole 122 can together form the silencing cavity 11.

[0058] The bottom wall 132 of the drain shell can be formed with a drain hole 131. The drain hole 131 can penetrate the bottom wall 132 of the drain shell along the thickness direction. The drain hole 131 can be arranged opposite to the connecting hole 122 along the height direction of the silencer 1. The condensate in the second space 121 can flow into the first space 134 through the connecting hole 122. The condensate flowing into the first space 134 can be discharged out of the silencer 11 through the drain hole 131, thereby achieving the effect of smoothly discharging the condensate from the silencer 1, which can further reduce the impact of the condensate on the silencer effect of the silencer 1.

[0059] In some embodiments of this utility model, at least one of the first space 134 and the second space 121 is provided with an energy storage structure 40.

[0060] The first space 134 may be equipped with an energy storage structure 40, or the second space 121 may be equipped with an energy storage structure 40, or both the first space 134 and the second space 121 may be equipped with an energy storage structure 40. If the first space 134 is equipped with an energy storage structure 40, the heat released by the energy storage structure 40 can reduce the probability of condensate freezing in the first space 134, and can reduce the probability of ice blockage of the drain hole 131. If the second space 121 is equipped with an energy storage structure 40, the heat released by the energy storage structure 40 can reduce the probability of condensate freezing in the second space 121, can reduce the probability of ice blockage of the exhaust pipe 30, and can reduce the probability of ice blockage of the drain hole 131 in the first space 134. If both the first space 134 and the second space 121 are equipped with an energy storage structure 40, the probability of condensate freezing in both the first space 134 and the second space 121 can be reduced, and the probability of ice blockage of the drain hole 131 and the exhaust pipe 30 can be reduced.

[0061] This application embodiment uses an example where a first space 134 is equipped with an energy storage structure 40. The energy storage structure 40 can be arranged circumferentially around the drain hole 131, and can be located on the peripheral wall 133 of the drain shell. The energy storage structure 40 can dissipate heat and reduce the probability of condensate freezing in the first space 134, thus reducing the probability of ice clogging the drain hole 131.

[0062] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the muffler 1 may further include: a partition structure 50, which is disposed inside the muffler cavity 11 and fixed to the outer shell 10. The partition structure 50 divides the muffler cavity 11 into multiple sub-muffler cavities 111, which are arranged sequentially along a first direction perpendicular to the height direction of the muffler 1. The muffler pipe 20 and the exhaust pipe 30 are disposed on the partition structure 50. A connecting port 511 is formed at the lower end of the partition structure 50, which connects two adjacent sub-muffler cavities 111.

[0063] The partition structure 50 can be located within the anechoic cavity 11, or within the second space 121. The partition structure 50 can be fixed to the outer shell 10 and can be fixedly connected to the outer shell body 12 by welding, bonding, or other methods. The partition structure 50 can divide the anechoic cavity 11 into multiple sub-anechoic cavities 111. These sub-anechoic cavities 111 can be arranged sequentially along a first direction, which can be parallel to the length direction of the anechoic device 1 or perpendicular to the height direction of the anechoic device 1. By dividing the anechoic cavity 11 into multiple sub-anechoic cavities 111, the propagation path and number of reflections of sound waves can be increased, further enhancing the anechoic effect of the anechoic device 1.

[0064] By rationally designing the size and shape of different sub-anechoic cavities 111, the sub-anechoic cavities 111 can achieve better noise reduction effects for noise of different frequencies. The sizes of multiple sub-anechoic cavities 111 can be equal or unequal. For example, a larger sub-anechoic cavity 111 can better absorb and attenuate low-frequency noise, while a smaller sub-anechoic cavity 111 is suitable for handling high-frequency noise. Multiple sub-anechoic cavities 111 can work collaboratively to achieve effective control of broadband noise. This embodiment uses an example of multiple sub-anechoic cavities 111 of equal size for illustration. Within multiple equal sub-anechoic cavities 111, the flow velocity of the exhaust gas is relatively stable. Stable gas velocity helps reduce the generation of airflow noise and also further improves the noise reduction effect of the anechoic device 1, thereby further improving the reliability of the anechoic device 1.

[0065] Both the muffler pipe 20 and the exhaust pipe 30 can be installed on the partition structure 50, and both can be fixedly connected to the partition structure 50. A connecting port 511 can be formed at the lower end of the partition structure 50, connecting two adjacent sub-muffler cavities 111. Multiple connecting ports 511 can be provided, allowing multiple sub-muffler cavities 111 to be connected. When exhaust gas enters the muffler cavity 11, it can disperse into multiple sub-muffler cavities 111. Water vapor in the exhaust gas can condense into condensate in the multiple sub-muffler cavities 111. A drain hole 131 can be located at the bottom of one of the sub-muffler cavities 111. By providing the connecting port 511, the condensate in the multiple sub-muffler cavities 111 can flow into the first space 134 and be discharged from the muffler cavity 11 through the drain hole 131, further reducing the probability of condensate accumulation in the muffler cavity 11 and further reducing the impact of water accumulation on the muffler effect of the muffler device 1.

[0066] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the partition structure 50 may include: a plurality of partition plates 51, which are arranged sequentially at intervals along a first direction to divide the silencing cavity 11 into a plurality of sub-silencing cavities 111, and the lower end of the partition plate 51 is formed with a communication port 511.

[0067] The partition structure 50 may include multiple partition plates 51, which can be fixedly connected to the outer shell body 12 by means of snap-fit, welding, etc. The multiple partition plates 51 can be arranged sequentially at intervals along the first direction, and the multiple partition plates 51 can divide the silencing cavity 11 into multiple sub-silencing cavities 111. The lower end of each partition plate 51 can be formed with a connecting port 511, through which condensate can flow. The condensate in the multiple sub-silencing cavities 111 can flow into the first space 134 and be discharged from the silencing cavity 11 through the drain hole 131, which can further reduce the probability of condensate accumulating in the silencing cavity 11.

[0068] As an example, such as Figure 2As shown, at least one partition plate 51 may be provided with a first through hole 512. The first through hole 512 can penetrate the corresponding partition plate 51 along the thickness direction of the corresponding partition plate 51, thereby connecting two adjacent sub-silencers 111. This allows sound waves to propagate more smoothly between the two adjacent sub-silencers 111, further increasing the propagation path and complexity of the sound waves, thus more effectively consuming sound wave energy and further reducing exhaust noise intensity. Exhaust gas can enter the corresponding sub-silencer 111 through the outlet of the silencer pipe 20 and the exhaust port 21. The exhaust gas can flow between the interconnected sub-silencers 111, which is conducive to uniform airflow distribution, further reducing local concentration and turbulence of exhaust gas, and making the pressure distribution inside the silencer 11 more uniform, reducing the situation of excessive local pressure. This helps to reduce the pressure on the outer shell 10 and internal structure of the silencer device 1, enhance the overall structural strength of the silencer device 1, reduce the risk of damage to the silencer device 1 due to excessive pressure, and further extend the service life of the silencer device 1.

[0069] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the silencing device 1 may further include: a gas-liquid separation structure 60, which is fixed inside the silencing cavity 11; at least one silencing pipe 20 is configured as an air inlet pipe 22; and the gas-liquid separation structure 60 is correspondingly arranged with the outlet end of the air inlet pipe 22.

[0070] The gas-liquid separation structure 60 can be fixed inside the silencing cavity 11. The gas-liquid separation structure 60 can be fixedly connected to the partition structure 50, or it can be fixedly connected to the outer shell 12. The gas-liquid separation structure 60 can be used to separate water vapor from the exhaust gas, and it can condense the water vapor in the exhaust gas into condensate. The silencing device 1 includes at least one silencer pipe 20. There can be one silencer pipe 20, or there can be multiple silencer pipes 20. At least one silencer pipe 20 can be configured as an air inlet pipe 22, that is, one silencer pipe 20 can be configured as an air inlet pipe 22, or multiple silencer pipes 20 can be configured as air inlet pipes 22, such as... Figure 2 As shown, this application embodiment uses multiple silencer pipes 20, and one of the silencer pipes 20 is constructed as an air intake pipe 22 as an example for explanation. The outlet end of the air intake pipe 22 can be located in one of the sub-silencer cavities 111.

[0071] The gas-liquid separation structure 60 can be correspondingly set to the outlet end of the air inlet pipe 22. The gas-liquid separation structure 60 and the outlet end of the air inlet pipe 22 can be located within the same sub-anechoic chamber 111. When exhaust gas flows into the anechoic chamber 11 from the outlet end of the air inlet pipe 22, the exhaust gas can flow through the gas-liquid separation structure 60, achieving rapid gas-liquid separation and improving the separation efficiency of the gas-liquid separation structure 60. Furthermore, since most of the exhaust gas flows into the anechoic chamber 11 through the outlet end of the air inlet pipe 22, by correspondingly setting the gas-liquid separation structure 60 to the outlet end of the air inlet pipe 22, the effect of gas-liquid separation of most of the exhaust gas can be achieved. Compared to dispersing the exhaust gas to various locations within the anechoic chamber 11 before gas-liquid separation, this method improves the efficiency of the gas-liquid separation structure 60 in separating water vapor from the exhaust gas.

[0072] As an example, such as Figure 4 As shown, along the height direction of the silencer 1, the gas-liquid separation structure 60 can be located above the drain hole 131. When the gas-liquid separation structure 60 condenses the water vapor in the exhaust gas into condensate, the condensate can flow downward under the action of gravity, which can shorten the flow path of the condensate and allow the condensate to flow directly into the first space 134 under the action of gravity, which is beneficial to improving the discharge rate of the condensate.

[0073] As an example, multiple silencer pipes 20 can be constructed as air inlet pipes 22. There can be multiple air inlet pipes 22, and the outlet ends of the multiple air inlet pipes 22 can be respectively located in different sub-silencer cavities 111. There can be multiple gas-liquid separation structures 60, and the multiple gas-liquid separation structures 60 can be set one-to-one with the outlet ends of the multiple air inlet pipes 22. Each outlet end of the air inlet pipe 22 can be provided with a gas-liquid separation structure 60, so that the multiple gas-liquid separation structures 60 can be used to separate water vapor in the exhaust gas entering the corresponding sub-silencer cavity 111 from the outlet end of the corresponding air inlet pipe 22, which is beneficial to further improve the gas-liquid separation efficiency of the silencer device 1.

[0074] In some embodiments of this utility model, such as Figure 4 and Figure 6 As shown, the gas-liquid separation structure 60 may include: a connecting bracket 61, a mounting shaft 62, and a spiral guide vane 63. The connecting bracket 61 is located at the outlet end, the mounting shaft 62 is fixedly connected to the connecting bracket 61 and extends in the axial direction of the air inlet pipe 22 away from the air inlet pipe 22, and the spiral guide vane 63 is fixed to the outer peripheral wall of the mounting shaft 62 and extends in the axial direction of the mounting shaft 62.

[0075] The connecting bracket 61 can be located at the outlet end of the intake pipe 22. The width of the connecting bracket 61 can be smaller than the radial dimension of the intake pipe 22, which can reduce the probability of the connecting bracket 61 obstructing the outlet end of the intake pipe 22 and reduce the risk of affecting the efficiency of exhaust gas entering the silencer 11. As an example, the connecting bracket 61 can be constructed as a plate structure. The connecting bracket 61 can extend radially along the intake pipe 22. Both ends of the connecting bracket 61 can be fixedly connected to the intake pipe 22 by welding, snap-fitting, or other methods, thereby achieving the effect of fixed installation of the connecting bracket 61. The mounting shaft 62 can be fixedly connected to the connecting bracket 61 by welding, bonding, or other methods. The mounting shaft 62 can extend axially along the intake pipe 22 and can extend in a direction away from the intake pipe 22. The other end of the mounting shaft 62 can be fixedly connected to the partition plate 51 or the outer shell body 12. The spiral guide vane 63 can be fixed to the outer peripheral wall of the mounting shaft 62. The spiral guide vane 63 can be welded to the mounting shaft 62. The spiral guide vane 63 can be integrally formed with the mounting shaft 62. The spiral guide vane 63 can extend along the axial direction of the mounting shaft 62. By setting the spiral guide vane 63, the contact area between water vapor and the gas-liquid separation structure 60 can be increased, which can improve the efficiency of the gas-liquid separation structure 60 in separating water vapor from the waste gas, and is conducive to improving the working efficiency of the gas-liquid separation structure 60.

[0076] In the embodiments of this application, such as Figure 2 and Figure 4 As shown, the muffler 1 may include two muffler pipes 20, one of which is configured as an air intake pipe 22, and the other muffler pipe 20 connects to two sub-muffler cavities 111. There may be three partition plates 51, thereby dividing the muffler cavity 11 into four sub-muffler cavities 111. The three partition plates 51 may be referred to as the first partition plate 81, the second partition plate 82, and the third partition plate 83, respectively. The first partition plate 81, the second partition plate 82, and the third partition plate 83 may be arranged sequentially along a first direction. From the air intake pipe 22 to the exhaust pipe 30, the first partition plate 81, the second partition plate 82, and the third partition plate 83 may be arranged alternately. The four sub-silencing chambers 111 can be referred to as the first sub-silencing chamber 84, the second sub-silencing chamber 85, the third sub-silencing chamber 86, and the fourth sub-silencing chamber 87, respectively. From the intake pipe 22 to the exhaust pipe 30, the first sub-silencing chamber 84, the second sub-silencing chamber 85, the third sub-silencing chamber 86, and the fourth sub-silencing chamber 87 are arranged in sequence.

[0077] The intake pipe 22 can sequentially pass through one of the outer casing end walls 124, the first partition plate 81, the second partition plate 82, and the third partition plate 83. The exhaust pipe 30 can sequentially pass through the first partition plate 81, the second partition plate 82, the third partition plate 83, and the other outer casing end wall 124. An exhaust port 21 can be provided on the pipe section of the intake pipe 22 located in the first sub-anechoic chamber 84 and the third sub-anechoic chamber 86. Another silencer pipe 20 is connected to the second partition plate 82 and the third partition plate 83 respectively. This other silencer pipe 20 connects the second sub-anechoic chamber 85, the third sub-anechoic chamber 86, and the fourth sub-anechoic chamber 87. An exhaust port 21 can be provided on the pipe section of the other silencer pipe 20 located in the third sub-anechoic chamber 86. This other silencer pipe 20 can serve to connect multiple sub-anechoic chambers 111 and balance pressure. The first partition plate 81 can have a first through hole 512, thereby connecting the first sub-anechoic chamber 84 and the second sub-anechoic chamber 85.

[0078] The drain hole 131 can be located at the bottom of the fourth sub-anechoic chamber 87. The gas-liquid separation structure 60 can be located inside the fourth sub-anechoic chamber 87. The air inlet pipe 22 can extend along the first direction, and the gas-liquid separation structure 60 can be arranged opposite to the outlet end of the air inlet pipe 22 along the first direction. The connecting bracket 61 is constructed as a plate structure, and the mounting shaft 62 extends along the first direction. One end of the mounting shaft 62 is fixedly connected to the connecting bracket 61, and the other end of the mounting shaft 62 is fixedly connected to another outer casing end wall 124. The condensate condensed by the gas-liquid separation structure 60 can fall directly into the first space 134 under the action of gravity and be discharged from the anechoic chamber 11 through the drain hole 131.

[0079] The vehicle according to a second aspect of the present invention includes the muffler 1 described in the above embodiments.

[0080] According to the embodiments of this application, the use of the muffler 1 in the above embodiments can reduce the noise during vehicle operation and improve the comfort and reliability of the vehicle.

[0081] The muffler 1 and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A noise reduction device, characterized in that, include: A housing (10) defining a sound-absorbing cavity (11); At least one silencer pipe (20), at least a portion of which is disposed within and communicates with the silencer cavity (11); An exhaust pipe (30), at least a portion of which is disposed within and communicates with the silencing cavity (11); An energy storage structure (40) is disposed in the anechoic cavity (11). The energy storage structure (40) is configured to absorb and store heat when the ambient temperature is greater than or equal to a preset temperature, and is also configured to release heat when the ambient temperature is less than the preset temperature.

2. The silencing device according to claim 1, characterized in that, The outer shell (10) has a drain hole (131) that communicates with the silencing cavity (11). Along the height direction of the silencing device (1), the drain hole (131) is located at the lowest position of the outer shell (10).

3. The silencing device according to claim 2, characterized in that, The outer casing (10) includes an outer casing body (12) and a drain shell (13), the outer casing body (12) and the drain shell (13) together define the silencing cavity (11), the drain shell (13) is located below the outer casing body (12) and fixed to the outer casing body (12), and the drain shell (13) has the drain hole (131).

4. The silencing device according to claim 3, characterized in that, The drain shell (13) includes a drain shell bottom wall (132) and a drain shell peripheral wall (133). The drain shell peripheral wall (133) is arranged around the drain shell bottom wall (132) in the circumferential direction, so that the drain shell bottom wall (132) and the drain shell peripheral wall (133) together define a first space (134) open toward the outer shell body (12). The drain shell bottom wall (132) forms the drain hole (131). The outer shell body (12) defines a second space (121). The outer shell body (12) forms a connecting hole (122) opposite to the open end of the first space (134). The connecting hole (122) connects the first space (134) and the second space (121). The first space (134), the second space (121) and the connecting hole (122) constitute the sound-absorbing cavity (11).

5. The silencing device according to claim 4, characterized in that, At least one of the first space (134) and the second space (121) is provided with the energy storage structure (40).

6. The silencing device according to claim 1, characterized in that, Also includes: A partition structure (50) is provided inside the silencing cavity (11) and fixed to the outer shell (10). The partition structure (50) divides the silencing cavity (11) into multiple sub-silencing cavities (111). The multiple sub-silencing cavities (111) are arranged sequentially along a first direction, which is perpendicular to the height direction of the silencing device (1). The silencing pipe (20) and the exhaust pipe (30) are provided on the partition structure (50). A connecting port (511) is formed at the lower end of the partition structure (50). The connecting port (511) connects two adjacent sub-silencing cavities (111).

7. The silencing device according to claim 6, characterized in that, The partition structure (50) includes: a plurality of partition plates (51), the plurality of partition plates (51) are arranged sequentially at intervals along the first direction to divide the silencing cavity (11) into a plurality of sub-silencing cavities (111), and the lower end of the partition plate (51) forms the communication port (511).

8. The silencing device according to any one of claims 1-7, characterized in that, It also includes: a gas-liquid separation structure (60), which is fixed inside the silencing cavity (11), at least one of the silencing pipes (20) is configured as an air inlet pipe (22), and the gas-liquid separation structure (60) is correspondingly arranged with the outlet end of the air inlet pipe (22).

9. The silencing device according to claim 8, characterized in that, The gas-liquid separation structure (60) includes: a connecting bracket (61), a mounting shaft (62), and a spiral guide vane (63). The connecting bracket (61) is located at the outlet end. The mounting shaft (62) is fixedly connected to the connecting bracket (61) and extends in the axial direction of the air inlet pipe (22) away from the air inlet pipe (22). The spiral guide vane (63) is fixed to the outer peripheral wall of the mounting shaft (62) and extends in the axial direction of the mounting shaft (62).

10. A vehicle, characterized in that, Includes the silencing device (1) according to any one of claims 1-9.

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