Exhaust module for air path module, air path module, air suspension system and vehicle

Abstract

This invention discloses an exhaust module, an air suspension system, and a vehicle for use in an air circuit module. The exhaust module includes a valve body and a valve stem assembly. The valve body has a mounting cavity, a first channel, and a second channel. The first channel communicates with the atmospheric environment, and the second channel communicates with the air circuit channel. The valve stem assembly is movably disposed in the mounting cavity. The valve stem assembly has a connecting channel communicating with a first chamber, and the connecting channel communicates with at least one of the first and second channels. The exhaust module has a first state and a second state. In the first state, the valve stem assembly closes the first and second channels. In the second state, the air circuit channel communicates with the second chamber through the second channel, and the valve stem assembly connects the first and second channels. The connecting channel communicates with both the second channel and the first chamber. By providing a connecting channel on the valve stem assembly, when the exhaust module is in the second state and high-pressure gas is discharged into the atmospheric environment, some of the high-pressure gas can enter the first chamber through the connecting channel, thereby reducing the pressure difference between the first and second chambers. This helps to reduce the speed at which the valve stem assembly connects the first and second channels, preventing the exhaust volume from reaching its peak at the moment of discharge, thus reducing exhaust peak noise and delaying its occurrence.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to an exhaust module, an air circuit module, an air suspension system, and a vehicle for use in an air suspension system. Background Technology

[0002] In related technologies, when the air suspension system exhausts gas, the safety valve opens under the action of the high-pressure gas discharged from the solenoid valve. At the moment the safety valve opens and the high-pressure gas is discharged, the exhaust noise reaches its peak, affecting the user's hearing. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an exhaust module for a gas path module, which generates low noise and improves the user's hearing experience.

[0004] An exhaust module for an air circuit module includes an air circuit passage connecting a compressor and an air spring. The exhaust module includes: a valve body forming a mounting cavity, the valve body having a first channel and a second channel, the first channel being adapted to communicate with the atmospheric environment, and the second channel being adapted to communicate with the air circuit passage; a valve stem assembly movably disposed in the mounting cavity to open or close the first channel and the second channel, the valve stem assembly dividing the mounting cavity into a first chamber and a second chamber, the first chamber having an elastic element that cooperates with the valve stem assembly to give the valve stem assembly a tendency to move toward closing the first channel and the second channel; the second channel and the second chamber are... Selective connectivity; the valve stem assembly has a communication channel communicating with the first chamber, the communication channel communicating with at least one of the first channel and the second channel; the exhaust module has a first state and a second state, in the first state, the first chamber and the second chamber are respectively connected to the first channel, and the valve stem assembly shuts off the first channel and the second channel; in the second state, the gas passage is connected to the second chamber through the second channel, resulting in a pressure difference between the second chamber and the first chamber, the valve stem assembly opens the first channel and the second channel, and the communication channel is respectively connected to the second channel and the first chamber to reduce the pressure difference between the first chamber and the second chamber.

[0005] According to an embodiment of the present invention, the exhaust module has a connecting channel on the valve stem assembly that communicates with the first chamber. When the exhaust module is in the second state, the valve stem assembly gradually connects the first and second channels. At the same time, the connecting channel is connected to the second channel. During the process of high-pressure gas in the gas passage being discharged into the atmosphere, some of the high-pressure gas can enter the first chamber through the connecting channel to reduce the pressure difference between the first and second chambers. This helps to reduce the speed at which the valve stem assembly connects the first and second channels, preventing the exhaust volume of high-pressure gas in the gas passage from reaching its peak at the moment of discharge, thereby reducing the exhaust peak noise of the exhaust module. It also helps to delay the time point of exhaust peak noise, thus reducing the noise of the exhaust module. At the same time, no additional silencing components are required, which helps to simplify the structure of the exhaust module, improve the production and assembly efficiency of the exhaust module, and reduce the production cost of the exhaust module.

[0006] According to some embodiments of the present invention, the connecting channel is always connected to the first channel, and the second channel is connected to the connecting channel when it is connected to the first channel.

[0007] According to some embodiments of the present invention, the valve body is provided with a first branch and a second branch, the first branch being connected to the first chamber and the second branch being connected to the second chamber; wherein the second branch is switched to be connected to the first branch and the second channel.

[0008] According to some embodiments of the present invention, the second branch is provided with a first throttling section for throttling and reducing pressure, and / or the second channel is provided with a second throttling section for throttling and reducing pressure.

[0009] According to some embodiments of the present invention, the exhaust module further includes a control valve, the control valve including a first interface, a second interface and a third interface, the first interface being connected to the first branch, the second interface being connected to the second branch, and the third interface being connected to the second channel, wherein the control valve is activated to switch the second interface to be connected to the first interface and the third interface.

[0010] According to some embodiments of the present invention, the control valve is provided with a third throttling section for throttling and pressure reduction, the third throttling section being disposed at the second interface and / or the third interface.

[0011] According to some embodiments of the present invention, a cover is provided at the end of the first chamber away from the second chamber, the cover being used to close the open end of the first chamber, and the valve stem assembly is limited in a limiting fit with the cover to restrict the movement stroke of the valve stem assembly.

[0012] According to some embodiments of the present invention, the elastic element is elastically supported between the cover and the valve stem assembly.

[0013] The second objective of this invention is to provide a gas path module.

[0014] An air circuit module includes: an air circuit channel having a main interface connected to an air spring; a compressor connected to the air circuit channel to supply air to the air circuit channel; and an exhaust module, wherein the exhaust module is an exhaust module according to any one of claims 1-8, a second channel being connected to the main interface, and a first channel being connected to the atmospheric environment to exhaust air outward.

[0015] The air passage module has the same advantages as the exhaust module mentioned above, and will not be repeated here.

[0016] The third objective of this invention is to provide an air suspension system.

[0017] An air suspension system includes the aforementioned air circuit module and multiple air springs, wherein the multiple air springs are respectively connected to the main interface.

[0018] The air suspension system has the same advantages as the air circuit module mentioned above, and will not be elaborated on here.

[0019] The fourth objective of this invention is to provide a vehicle.

[0020] A vehicle comprising the exhaust module described above, the air passage module described above, or the air suspension system described above.

[0021] The vehicle described above has the same advantages as the exhaust module, air circuit module, or air suspension system described above, and will not be described in detail here.

[0022] Additional aspects and advantages of the 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

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the gas path module described in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0026] Figure 3 This is a simplified structural diagram of the exhaust module in the first state according to an embodiment of the present invention;

[0027] Figure 4 This is a simplified structural diagram of the exhaust module in the second state according to an embodiment of the present invention;

[0028] Figure 5 The exhaust noise curves of the comparison sample and the first sample of the present invention are shown in the figure.

[0029] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0030] Figure 7 This is a simplified structural diagram of the vehicle described in an embodiment of the present invention.

[0031] Figure label:

[0032] Exhaust module 100

[0033] Valve body 110, mounting cavity 111, first chamber 1111, second chamber 1112

[0034] First Channel 112

[0035] Second Channel 113, First Section 1131, Second Section 1132

[0036] First Branch Road 114

[0037] Second branch road 115, first throttling section 1151

[0038] Valve stem assembly 120, connecting channel 121

[0039] Elastic component 130

[0040] Control valve 140, first port 141, second port 142, third port 143

[0041] Cover 150, sealing gasket 160

[0042] Gas circuit module 200, gas circuit passage 210, compressor 220,

[0043] Air suspension system 300, vehicle 400. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below. Examples of these 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 the present invention, and should not be construed as limiting the present invention.

[0045] In the description of this invention, it should be understood that the terms "inner," "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] The following is for reference. Figures 1-7 An exhaust module 100, an air circuit module 200, an air suspension system 300, and a vehicle 400 are described according to embodiments of the present invention.

[0048] Combination Figure 1 and Figure 2 According to an embodiment of the present invention, an exhaust module 100 for an air circuit module 200 is provided. The air circuit module 200 includes an air circuit passage 210 connecting a compressor 220 and an air spring.

[0049] For example, the compressor 220 can be connected to the air spring through the air passage 210. After the compressor 220 compresses the air, it can be delivered to the air spring through the air passage 210 to inflate the air spring. The air spring can also exhaust gas to the outside through the air passage 210. In other words, the gas flowing in the air passage 210 is high-pressure gas.

[0050] It should be noted that "external environment" can be understood as the atmospheric environment.

[0051] Combination Figure 3 and Figure 4 The exhaust module 100 includes a valve body 110 and a valve stem assembly 120. The valve body 110 has a mounting cavity 111. The valve body 110 is provided with a first channel 112 and a second channel 113. The first channel 112 is adapted to communicate with the atmospheric environment, and the second channel 113 is adapted to communicate with the gas passage 210. The valve stem assembly 120 is movably disposed in the mounting cavity 111 to allow the first channel 112 and the second channel 113 to be opened or closed.

[0052] For example, the valve body 110 is provided with a mounting cavity 111, so that the valve body 110 can serve as a mounting carrier for the valve stem assembly 120 and the elastic element 130, facilitating the positioning and installation of the valve body 110 assembly and the elastic element 130. Furthermore, since the valve stem assembly 120 and the elastic element 130 are disposed in the mounting cavity 111, the valve body 110 can protect the valve stem assembly 120 and the elastic element 130, thereby reducing the risk of damage to the valve stem assembly 120 and the elastic element 130. At the same time, the valve body 110 can support the valve stem assembly 120 and the elastic element 130, thereby improving the stability of the valve stem assembly 120 and the elastic element 130.

[0053] Further integration Figure 3 and Figure 4 The valve body 110 is also provided with a first channel 112 and a second channel 113. The valve stem assembly 120 is movably disposed in the mounting cavity 111 to selectively open or close the first channel 112 and the second channel 113. Since the first channel 112 is connected to the atmospheric environment and the second channel 113 is connected to the gas passage 210, when the valve stem assembly 120 moves to open the first channel 112 and the second channel 113, the gas passage 210 is connected to the atmospheric environment through the first channel 112 and the second channel 113 respectively, so that the high-pressure gas in the gas passage 210 can be discharged to the atmospheric environment through the first channel 112 and the second channel 113; when the valve stem assembly 120 moves to close the first channel 112 and the second channel 113, the gas passage 210 cannot be connected to the atmospheric environment through the first channel 112 and the second channel 113, so that the high-pressure gas in the gas passage 210 can be sealed in the gas passage 210.

[0054] Combination Figure 1 and Figure 2 The valve stem assembly 120 divides the mounting cavity 111 into a first chamber 1111 and a second chamber 1112. The first chamber 1111 is provided with an elastic element 130, which cooperates with the valve stem assembly 120 to make the valve stem assembly 120 tend to move toward the cut-off first channel 112 and second channel 113.

[0055] Exemplarily, in the moving direction of the valve stem assembly 120, the first chamber 1111 and the second chamber 1112 can be distributed on both sides of the valve stem assembly 120. The elastic element 130 is disposed in the first chamber 1111 and can cooperate with the valve stem assembly 120 in the moving direction of the valve stem assembly 120. For example, when the valve stem assembly 120 moves from a position that cuts off the first channel 112 and the second channel 113 to a position that opens the first channel 112 and the second channel 113, the valve stem assembly 120 compresses the elastic element 130. This allows the valve stem assembly 120 to tend to move toward cutting off the first channel 112 and the second channel 113 under the action of the elastic member 130, facilitating the reset of the valve stem assembly 120. Furthermore, when the valve stem assembly 120 is in the position that cuts off the first channel 112 and the second channel 113, the elastic member 130 can also press the valve stem assembly 120 tightly, thereby improving the reliability of the cut-off of the first channel 112 and the second channel 113, and thus improving the sealing performance of the high-pressure gas in the gas passage 210.

[0056] The second channel 113 is selectively connected to the second chamber 1112. For example, when the second channel 113 is connected to the second chamber 1112, the gas passage 210 is connected to the second chamber 1112 through the second channel 113. A portion of the high-pressure gas in the gas passage 210 can enter the second chamber 1112, making the gas pressure in the second chamber 1112 greater than the gas pressure in the first chamber 1111. Under the pressure difference between the first chamber 1111 and the second chamber 1112, the valve stem assembly 120 can direct the flow of gas through the first channel 112 and the second channel 113. The position is moved, thereby connecting the first channel 112 and the second channel 113. The gas passage 210 can be connected to the atmospheric environment through the first channel 112 and the second channel 113, so that the high-pressure gas in the gas passage 210 can be discharged into the atmospheric environment. When the second channel 113 is cut off from the second chamber 1112, the high-pressure gas in the gas passage 210 cannot enter the second chamber 1112. The pressure between the second chamber 1112 and the first chamber 1111 is balanced, so that the valve stem assembly 120 can be kept in the state of cutting off the first channel 112 and the second channel 113.

[0057] Combination Figure 3 and Figure 4The valve stem assembly 120 is provided with a communication channel 121 communicating with the first chamber 1111. The communication channel 121 is connected to at least one of the first channel 112 and the second channel 113. The exhaust module 100 has a first state and a second state. In the first state, the first chamber 1111 and the second chamber 1112 are respectively connected to the first channel 112, and the valve stem assembly 120 cuts off the first channel 112 and the second channel 113. In the second state, the gas passage 210 is connected to the second chamber 1112 through the second channel 113, so that there is a pressure difference between the second chamber 1112 and the first chamber 1111. The valve stem assembly 120 connects the first channel 112 and the second channel 113, and the communication channel 121 is connected to the second channel 113 and the first chamber 1111 respectively to reduce the pressure difference between the first chamber 1111 and the second chamber 1112.

[0058] Specifically, refer to Figure 3 When the exhaust module 100 is in the first state, the first chamber 1111 and the second chamber 1112 can be connected to the first channel 112 through the connecting channel 121. The first channel 112 is connected to the atmospheric environment, so that the gas in the atmospheric environment can enter the first chamber 1111 and the second chamber 1112 through the first channel 112 and the connecting channel 121 respectively. The gas pressure in the first chamber 1111 and the second chamber 1112 is in a balanced state, so that the valve stem assembly 120 can be in the position of cutting off the first channel 112 and the second channel 113, so as to seal the high-pressure gas in the gas passage 210 within the gas passage 210.

[0059] Reference Figure 4When the exhaust module 100 is in the second state, the gas passage 210 is connected to the second chamber 1112 through the second passage 113. The high-pressure gas in the gas passage 210 can be discharged into the second chamber 1112 through the second passage 113. At this time, the gas pressure in the second chamber 1112 is higher than the gas pressure in the first chamber 1111. Under the action of the pressure difference between the first chamber 1111 and the second chamber 1112, the valve stem assembly 120 can move towards the first chamber 1111. During the movement of the valve stem assembly 120, the valve stem assembly 120 gradually connects the first passage 112 and the second passage 113. The high-pressure gas in the gas passage 210 can be discharged into the atmosphere in sequence through the first passage 112 and the second passage 113. In this process, since the connecting passage 121 is connected to the second passage 113... (It can also be understood that the connecting channel 121 connects between the first channel 112 and the second channel 113). Therefore, some of the high-pressure gas discharged from the gas passage 210 can enter the connecting channel 121. The connecting channel 121 is connected to the first chamber 1111, so that some of the high-pressure gas entering the connecting channel 121 can further enter the first chamber 1111. This can reduce the pressure difference between the first chamber 1111 and the second chamber 1112, thereby reducing the moving speed of the valve stem assembly 120. This can reduce the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113, which helps to prevent the high-pressure gas in the gas passage 210 from reaching its peak discharge volume at the moment of discharge, thereby reducing the peak discharge noise of the exhaust module 100 and delaying the time point of the peak discharge noise.

[0060] In related technologies, in order to improve the noise problem of the air circuit module 200, it is usually necessary to set additional silencers on the compressor 220, such as installing a silencer at the exhaust port of the compressor 220, or installing an acoustic package on the outside of the compressor 220. Although this can reduce the noise generated by the air circuit module 200, it will make the structure of the air circuit module 200 complex and the production cost high.

[0061] This application provides a connecting channel 121 on the valve stem assembly 120 that communicates with the first chamber 1111. When the exhaust module 100 is in the second state, the valve stem assembly 120 gradually connects the first channel 112 and the second channel 113. At the same time, the connecting channel 121 is connected to the second channel 113. During the process of the high-pressure gas in the gas passage 210 being discharged into the atmosphere, some of the high-pressure gas can enter the first chamber 1111 through the connecting channel 121 to reduce the pressure difference between the first chamber 1111 and the second chamber 1112. This helps to reduce the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113, preventing the exhaust volume of the high-pressure gas in the gas passage 210 from reaching its peak at the moment of discharge. This reduces the peak exhaust noise of the exhaust module 100 and delays the time of occurrence of the peak exhaust noise, thereby reducing the noise of the exhaust module 100. Furthermore, no additional silencing components are required, which simplifies the structure of the exhaust module 100, improves the production and assembly efficiency of the exhaust module 100, and reduces the production cost of the exhaust module 100.

[0062] Combination Figure 3 and Figure 4 In some embodiments of the present invention, the connecting channel 121 is always connected to the first channel 112, and the second channel 113 is connected to the connecting channel 121 when it is connected to the first channel 112. That is, in both the first and second states of the exhaust module 100, the connecting channel 121 is connected to the first channel 112. In the first state, the second channel 113 is in a medium state with the connecting channel 121. In the second state, the first channel 112 is connected to the second channel 113, and the second channel 113 is connected to the connecting channel 121.

[0063] For example, the valve stem assembly 120 may be located between the first channel 112 and the second channel 113 so that the valve stem assembly 120 can open or close the first channel 112 and the second channel 113. A connecting channel 121 is provided on the valve stem assembly 120, and the air inlet end of the connecting channel 121 may be open toward the first channel 112 so that the connecting channel 121 can always be connected to the first channel 112.

[0064] In the first state, the valve stem assembly 120 shuts off the first channel 112 and the second channel 113. The first chamber 1111 and the second chamber 1112 can be connected to the first channel 112 through the connecting channel 121, so that the gas in the atmospheric environment can be connected to the gas entering the first chamber 1111 and the second chamber 1112 through the connecting channel 121. The gas pressure in the first chamber 1111 and the second chamber 1112 is in a balanced state, so that the valve stem assembly 120 can maintain the state of shutting off the first channel 112 and the second channel 113.

[0065] In the second state, the gas passage 210 is connected to the second chamber 1112 via the second channel 113. High-pressure gas in the gas passage 210 can be discharged into the second chamber 1112 through the second channel 113. At this time, the gas pressure in the second chamber 1112 is higher than the gas pressure in the first chamber 1111. Under the pressure difference between the first chamber 1111 and the second chamber 1112, the valve stem assembly 120 can move towards the first chamber 1111. During the movement of the valve stem assembly 120, it gradually connects the first channel 112 and the second channel 113, allowing the high-pressure gas in the gas passage 210 to pass sequentially through the first channel 112 and the second channel 113. 3. The gas is discharged into the atmosphere. During this process, as the first channel 112 and the second channel 113 gradually become connected, the second channel 113 can be connected to the connecting channel 121. Some of the high-pressure gas discharged from the gas passage 210 can enter the connecting channel 121. The connecting channel 121 is connected to the first chamber 1111, so that some of the high-pressure gas entering the connecting channel 121 can further enter the first chamber 1111, thereby reducing the pressure difference between the first chamber 1111 and the second chamber 1112, thereby reducing the moving speed of the valve stem assembly 120, and thus reducing the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113.

[0066] Therefore, by ensuring that the connecting channel 121 is always connected to the first channel 112, and that the second channel 113 is connected to the connecting channel 121 when it is connected to the first channel 112, it is possible to adjust the pressure difference between the first chamber 1111 and the second chamber 1112 according to the working state of the exhaust module 100. This also helps to simplify the complexity of the channels in the exhaust module 100, reduce the processing difficulty of the exhaust module 100, and thus improve the production efficiency of the exhaust module 100.

[0067] Combination Figure 3 and Figure 4 In some embodiments of the present invention, the valve body 110 is provided with a first branch 114 and a second branch 115. The first branch 114 is connected to the first chamber 1111, and the second branch 115 is connected to the second chamber 1112. The second branch 115 is switched to connect with the first branch 114 and the second channel 113.

[0068] For example, in the first state, the first branch 114 is connected to the second branch 115, and the valve stem assembly 120 is in a state of cutting off the first branch 114 and the second channel 113. At this time, the first chamber 1111 is connected to the first channel 112 through the connecting channel 121. Gas in the atmospheric environment can enter the first chamber 1111 in sequence through the first channel 112 and the connecting channel 121. At the same time, since the first branch 114 and the second branch 115 are connected, and the first branch 114 is connected to the first chamber 1111 and the second chamber 1112 are connected, some of the gas entering the first chamber 1111 can enter the second chamber 1112 through the first branch 114 and the second branch 115, so that the gas pressure in the first chamber 1111 and the second chamber 1112 can both be atmospheric pressure, thereby making the gas pressure in the first chamber 1111 and the second chamber 1112 in a balanced state, and thus the valve stem assembly 120 can keep the first channel 112 and the second channel 113 cut off.

[0069] In the second state, the second branch 115 is connected to the second channel 113. The high-pressure gas in the gas passage 210 can enter the second chamber 1112 through the second channel 113 and the second branch 115, thereby making the gas pressure in the second chamber 1112 greater than the gas pressure in the first chamber 1111. Under the action of the pressure difference between the first chamber 1111 and the second chamber 1112, the valve stem assembly 120 moves toward the first chamber 1111. During this process, the valve stem assembly 120 gradually connects the first channel 112 and the second channel 113, so that the high-pressure gas in the gas passage 210 can be discharged into the atmosphere through the second channel 113 and the first channel 112.

[0070] Therefore, by providing a first branch 114 connected to the first chamber 1111 and a second branch 115 connected to the second chamber 1112 in the valve body 110, and by switching the second branch 115 with the first branch 114 and the second channel 113, the working state of the exhaust module 100 can be switched.

[0071] In some embodiments of the present invention, the second branch 115 is provided with a first throttling section 1151 for throttling and reducing pressure, and / or the second channel 113 is provided with a second throttling section for throttling and reducing pressure.

[0072] Combination Figure 3 and Figure 4In some examples, a first throttling section 1151 is provided on the second branch 115. The first throttling section 1151 can throttle and reduce the pressure of the high-pressure gas flowing through it, thereby reducing the speed at which the high-pressure gas discharged from the gas passage 210 enters the second chamber 1112. This causes the pressure difference between the second chamber 1112 and the first chamber 1111 to increase slowly, which helps to reduce the speed at which the valve stem assembly 120 connects the first passage 112 and the second passage 113. This helps to prevent the high-pressure gas in the gas passage 210 from reaching its peak discharge volume at the moment of discharge, thereby reducing the peak discharge noise of the exhaust module 100 and delaying the time point when the peak discharge noise occurs.

[0073] Combination Figure 5 and Figure 6 Sample 1 is an exhaust module 100 using the technical solution of this application, and the comparative sample is an exhaust module 100 that does not use the technical solution of this application. Alternatively, the comparative sample can be understood as an exhaust module 100 using the technical solution of related technologies. By conducting exhaust noise tests on Sample 1 and the comparative sample and plotting exhaust noise curves, it can be seen that the peak noise point SPL2 of Sample 1 is smaller than the peak noise point SPL1 of the comparative sample, and the time point t2 of the peak noise of Sample 1 is larger than the time point t1 of the peak noise of the comparative sample. It can be seen that compared with the comparative sample, Sample 1 produces a smaller exhaust peak noise, and the time point of the exhaust peak noise can be effectively delayed, which is beneficial to improving the human hearing.

[0074] In other examples, a second throttling section is provided on the second channel 113. The second throttling section can throttle and reduce the pressure of the high-pressure gas flowing into the second chamber 1112, thereby reducing the speed at which the high-pressure gas enters the second chamber 1112. This causes the pressure difference between the second chamber 1112 and the first chamber 1111 to increase slowly, which helps to reduce the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113. This, in turn, helps to prevent the exhaust volume of the high-pressure gas in the gas passage 210 from reaching its peak at the moment of discharge, thereby reducing the exhaust peak noise of the exhaust module 100 and delaying the time point when the exhaust peak noise occurs.

[0075] In some other examples, a first throttling section 1151 is provided on the second branch 115, and a second throttling section is provided on the second channel 113. As the high-pressure gas discharged from the gas passage 210 flows into the second chamber 1112, it can be throttled and depressurized by the first throttling section 1151 and the second throttling section in sequence. This helps to further reduce the speed at which the high-pressure gas enters the second chamber 1112, so that the pressure difference between the second chamber 1112 and the first chamber 1111 increases slowly. This helps to reduce the speed at which the valve stem assembly 120 opens the first channel 112 and the second channel 113.

[0076] Therefore, through the cooperation of the connecting channel 121 with the first throttling part 1151 and / or the second throttling part, the opening speed of the valve stem assembly 120 in the second state of the exhaust module 100 can be effectively reduced. This helps to prevent the high-pressure gas in the gas passage 210 from reaching its peak exhaust volume at the moment of discharge, thereby reducing the exhaust peak noise of the exhaust module 100. At the same time, it helps to delay the time point of the exhaust peak noise, thereby achieving the purpose of reducing the noise generated when the exhaust module 100 is working.

[0077] In some examples, the first throttling section 1151 and / or the second throttling section can be formed as a throttling orifice.

[0078] Combination Figure 3 and Figure 4 In some embodiments, the second channel 113 may include a first segment 1131 and a second segment 1132 connected together. The first segment 1131 is connected between the first channel 112 and the gas passage 210, and the second segment 1132 is connected between the second branch 115 and the gas passage 210. The second throttling section may be disposed on the second segment 1132 so that the second throttling section can throttle and reduce the pressure of the high-pressure gas flowing toward the second chamber 1112, thereby reducing the speed at which the valve stem assembly 120 conducts the first channel 112 and the second channel 113. At the same time, it can avoid the high-pressure gas being slowly discharged into the atmosphere due to the second throttling section being disposed on the first segment 1131, which is beneficial to ensuring the working performance of the gas passage module 200.

[0079] Combination Figures 1 to 4 In some embodiments of the present invention, the exhaust module 100 further includes a control valve 140, which includes a first interface 141, a second interface 142 and a third interface 143. The first interface 141 is connected to a first branch 114, the second interface 142 is connected to a second branch 115, and the third interface 143 is connected to a second channel 113. The control valve 140 is activated to switch the connection between the second interface 142 and the first interface 141 and the third interface 143.

[0080] For example, the control valve 140 can be disposed on the valve body 110, and the first interface 141 of the control valve 140 is connected to the first branch 114, the second interface 142 is connected to the second branch 115, and the third interface 143 is connected to the second channel 113. By switching the connection state of the interfaces of the control valve 140, the second branch 115 can be switched to connect with the first branch 114 and the second channel 113.

[0081] like Figure 3As shown, in the first state, the second interface 142 is connected to the first interface 141, so that the second branch 115 can be connected to the first branch 114. At this time, the valve stem assembly 120 is in the state of cutting off the first channel 112 and the second channel 113. The first channel 112 is connected to the atmospheric environment and the connecting channel 121. The connecting channel 121 is connected to the first chamber 1111. At the same time, the first channel 112 is connected to the second chamber 1112 through the first branch 114 and the second branch 115, so that the gas in the atmospheric environment can enter the first chamber 1111 in sequence through the first channel 112 and the connecting channel 121. The gas entering the first chamber 1111 can further flow into the second chamber 1112 through the first branch 114 and the second branch 115, so that the gas pressure in the first chamber 1111 and the second chamber 1112 is kept balanced, thereby allowing the valve stem assembly 120 to remain in the position of cutting off the first channel 112 and the second channel 113.

[0082] Reference Figure 4 In the second state, the second interface 142 is connected to the third interface 143, allowing the second branch 115 to connect to the second channel 113. High-pressure gas in the gas passage 210 can flow into the second chamber 1112 through the second channel 113 and the second branch 115, gradually increasing the pressure difference between the second chamber 1112 and the first chamber 1111. Under the influence of this pressure difference, the valve stem assembly 120 gradually moves towards the first chamber 1111, gradually connecting the first channel 112 and the second channel 113. During this process, the high-pressure gas in the gas passage 210 can... The gas is discharged into the atmosphere through the second channel 113 and the first channel 112 in sequence. At the same time, some high-pressure gas flows into the connecting channel 121 and enters the first chamber 1111 to reduce the pressure difference between the first chamber 1111 and the second chamber 1112. This reduces the speed at which the valve stem assembly 120 fully connects the first channel 112 and the second channel 113, thereby helping to prevent the high-pressure gas in the gas passage 210 from reaching its peak exhaust volume at the moment of discharge. This reduces the peak exhaust noise of the exhaust module 100 and delays the occurrence of the peak exhaust noise, thus achieving the purpose of reducing the noise generated by the exhaust module 100 during operation.

[0083] In some embodiments, the control valve 140 may be configured as a solenoid valve.

[0084] In some embodiments of the present invention, the control valve 140 is provided with a third throttling section for throttling and pressure reduction, the third throttling section being provided at the second interface 142 and / or the third interface 143.

[0085] In some examples, the third throttling section can be located at the second interface 142. When the high-pressure gas flowing out of the gas passage 210 passes through the third throttling section, the third throttling section can throttle and reduce the pressure of the high-pressure gas to reduce the speed at which the high-pressure gas enters the second chamber 1112, so that the pressure difference between the second chamber 1112 and the first chamber 1111 increases slowly. This helps to reduce the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113, and thus helps to prevent the exhaust volume of the high-pressure gas in the gas passage 210 from reaching its peak at the moment of discharge, thereby reducing the exhaust peak noise of the exhaust module 100 and delaying the time point when the exhaust peak noise occurs.

[0086] In other examples, a third throttling section can be provided at the third interface 143. When the high-pressure gas flowing out of the gas passage 210 passes through the third throttling section, the third throttling section can throttle and reduce the pressure of the high-pressure gas to reduce the speed at which the high-pressure gas enters the second chamber 1112, so that the pressure difference between the second chamber 1112 and the first chamber 1111 increases slowly. This helps to reduce the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113, and thus helps to prevent the exhaust volume of the high-pressure gas in the gas passage 210 from reaching its peak at the moment of discharge, thereby reducing the exhaust peak noise of the exhaust module 100 and delaying the time point when the exhaust peak noise occurs.

[0087] In some other examples, both the second port 142 and the third port 143 may be provided with a third throttling section. As the high-pressure gas discharged from the gas passage 210 flows into the second chamber 1112, it can be throttled and depressurized by the third throttling section provided in the third port 143 and the second port 142 in sequence. This helps to further reduce the speed at which the high-pressure gas enters the second chamber 1112, so that the pressure difference between the second chamber 1112 and the first chamber 1111 increases slowly. This helps to reduce the speed at which the valve stem assembly 120 opens the first passage 112 and the second passage 113.

[0088] In some embodiments of the present invention, the third throttling portion can be formed as a throttling orifice, and the third throttling portion can be integrally formed with the second interface 142 and / or the third interface 143. It can also be understood that the second interface 142 and / or the third interface 143 can be formed as a throttling orifice, which is beneficial to simplifying the structure of the exhaust module 100, thereby simplifying the production and assembly steps of the exhaust module 100, and further improving the production and processing efficiency of the exhaust module 100.

[0089] In other embodiments of the present invention, the speed at which high-pressure gas enters the second chamber 1112 can be reduced by controlling the flow rate of high-pressure gas flowing through the control valve 140, thereby slowly increasing the pressure difference between the second chamber 1112 and the first chamber 1111, which helps to reduce the speed at which the valve stem assembly 120 opens the first channel 112 and the second channel 113.

[0090] Combination Figure 1 and Figure 2 In some embodiments of the present invention, a cover 150 is provided at the end of the first chamber 1111 away from the second chamber 1112, and the cover 150 is used to close the open end of the first chamber 1111.

[0091] For example, in the circumferential direction of the valve stem assembly 120, the end of the first chamber 1111 away from the second chamber 1112 is open. The valve stem assembly 120 can be arranged in the mounting cavity 111 through the open end of the first chamber 1111, which is beneficial to improve the assembly convenience of the valve stem assembly 120 and the valve body 110. By providing a cover 150 at the open end of the first chamber 1111 to close the first chamber 1111, dust and other debris are prevented from entering the exhaust module 100 through the open end of the first chamber 1111, which is beneficial to improve the service life of the exhaust module 100.

[0092] Further integration Figure 1 and Figure 2 The valve stem assembly 120 is positioned in a limiting fit with the cover 150 to restrict the movement of the valve stem assembly 120.

[0093] For example, when it is necessary to connect the first channel 112 and the second channel 113, the valve stem assembly 120 moves toward the open end of the first chamber 1111. The cover 150 can engage with the valve stem assembly 120 at the open end of the first chamber 1111 to limit the valve stem assembly 120, preventing the valve stem assembly 120 from moving too far and causing it to detach from the mounting cavity 111. This helps to improve the stability of the valve stem assembly 120 when it moves within the mounting cavity 111.

[0094] Combination Figures 1 to 4 In some embodiments of the present invention, the elastic element 130 is elastically supported between the cover 150 and the valve stem assembly 120.

[0095] For example, when the valve stem assembly 120 is in the position that closes the first channel 112 and the second channel 113, the elastic member 130 can press the valve stem assembly 120 to improve the reliability of the valve stem assembly 120 in closing the first channel 112 and the second channel 113. When it is necessary to open the first channel 112 and the second channel 113, some high-pressure gas flows from the gas passage 210 into the second chamber 1112, so that a pressure difference is generated between the second chamber 1112 and the first chamber 1111. When the gas pressure in the second chamber 1112 can overcome the pre-tightening force of the elastic member 130, the valve stem assembly 120 can move towards the cover 150 under the action of the gas pressure in the second chamber 1112 and compress the elastic member 130, so that the first channel 112 and the second channel 113 are gradually opened, thereby allowing the high-pressure gas in the gas passage 210 to be discharged into the atmosphere.

[0096] When it is necessary to close the first channel 112 and the second channel 113 again, the high-pressure gas in the second chamber 1112 is discharged, and the valve stem assembly 120 can be reset under the pressure of the elastic element 130 and the first chamber 1111, so that the valve stem assembly 120 can close the first channel 112 and the second channel 113 again.

[0097] Combination Figure 1 and Figure 2 In some embodiments of the present invention, a sealing gasket 160 is provided at one end of the valve stem assembly 120 away from the cover body 150. At least a portion of the sealing gasket 160 can extend between the first channel 112 and the second channel 113 and block the first channel 112 and the second channel 113, thereby improving the sealing effect when the first channel 112 and the second channel 113 are closed, which helps to reduce the risk of high-pressure gas leakage in the gas passage 210.

[0098] The following is combined Figure 3 and Figure 4 The working state of the exhaust module 100 in this embodiment of the invention is briefly described.

[0099] When the air spring needs to be inflated, the compressor 220 can deliver the compressed high-pressure gas to the air passage 210. At this time, the exhaust module 100 is in the first state. In the first state, the connecting passage 121 connects the first passage 112 with the first chamber 1111. Gas in the atmospheric environment can enter the first chamber 1111 through the connecting passage 121. At this time, the second port 142 of the control valve 140 is connected to the first port 141, so that the first branch 114 is connected to the second branch 115. Thus, the first chamber 1111 can be connected to the second chamber 1112 through the first branch 114 and the second branch 115. The gas in the first chamber 1111 can flow into the second chamber 1112 through the first branch 114 and the second branch 115, so that the gas pressure in the first chamber 1111 and the second chamber 1112 is balanced. The valve stem assembly 120 is kept in the position of cutting off the first passage 112 and the second passage 113.

[0100] When the air spring needs to vent, the venting module 100 switches to the second state. At this time, the second interface 142 of the control valve 140 is connected to the point interface, so that the second channel 113 can be connected to the second branch 115. This allows the air passage 210 to be connected to the second chamber 1112 through the second channel 113 and the second branch 115. The high-pressure gas in the air passage 210 can flow into the second chamber 1112 in sequence through the second channel 113 and the second branch 115. During this process, the gas pressure in the second chamber 1112 gradually increases. Under the action of the gas pressure in the second chamber 1112, the valve stem assembly 120 moves towards the cover 150 to gradually connect the first channel 112 and the second channel 113. The high-pressure gas in the air passage 210 can be discharged into the atmosphere through the second channel 113 and the first channel 112, thereby realizing the venting of the air supply spring.

[0101] Combination Figure 1 and Figure 2 According to an embodiment of the present invention, the air circuit module 200 includes: an air circuit channel 210, a compressor 220 and an exhaust module 100. The air circuit channel 210 is provided with a main interface connected to an air spring. The compressor 220 is connected to the air circuit channel 210 to supply air to the air circuit channel 210. The exhaust module 100 is the exhaust module 100 described above. The second channel 113 is connected to the main interface, and the first channel 112 is connected to the atmospheric environment to exhaust air to the outside.

[0102] For example, the compressor 220 can be connected to the air spring through the air passage 210. After the compressor 220 compresses the air, it can be delivered to the air spring through the air passage 210 to inflate the air spring. The air spring can also exhaust to the atmosphere through the air passage 210, and the exhaust state of the air spring can be controlled by the exhaust module 100.

[0103] When the air spring needs to be inflated, the compressor 220 can draw in and compress air. The compressed air can be delivered to the air passage 210 and can further enter the air spring through the main interface to inflate the air spring. At this time, the exhaust module 100 is in the first state, that is, the valve stem assembly 120 is in the position of cutting off the first channel 112 and the second channel 113 to prevent the high-pressure gas entering the air passage 210 from leaking through the second channel 113 and the first channel 112, thereby improving the inflation efficiency of the air spring.

[0104] When the air spring needs to be vented, the venting module 100 switches to the second state, that is, the valve stem assembly 120 moves to a position that connects the first channel 112 and the second channel 113. The air passage 210 is connected to the first channel 112 through the second channel 113. The gas in the air spring can flow into the first channel 112 through the air passage 210 and the second channel 113, and then be discharged into the atmosphere through the first channel 112.

[0105] According to the gas path module 200 of the present invention, since the gas path module 200 is provided with the above-mentioned exhaust module 100, by providing a connecting channel 121 on the valve stem assembly 120 that communicates with the first chamber 1111, when the exhaust module 100 is in the second state, the valve stem assembly 120 gradually connects the first channel 112 and the second channel 113, and at the same time the connecting channel 121 is connected to the second channel 113. During the process of high-pressure gas in the gas path channel 210 being discharged into the atmosphere, some high-pressure gas can enter the first chamber 1111 through the connecting channel 121 to reduce the pressure difference between the first chamber 1111 and the second chamber 1112. This helps to reduce the speed at which the valve stem assembly 120 connects the first channel 112 and the second channel 113, preventing the high-pressure gas in the gas passage 210 from reaching its peak exhaust volume at the moment of discharge, thereby reducing the peak exhaust noise of the exhaust module 100. It also helps to delay the time point when the peak exhaust noise occurs, thereby reducing the noise of the exhaust module 100 and thus reducing the noise of the gas passage module 200. At the same time, it eliminates the need for additional silencing components, which helps to simplify the structure of the exhaust module 100, thereby simplifying the structure of the gas passage module 200, reducing the production cost of the gas passage module 200, and improving the production and assembly efficiency of the gas passage module 200.

[0106] The air suspension system 300 according to an embodiment of the present invention includes the air circuit module 200 described above and a plurality of air springs. The plurality of air springs are respectively connected to the main interface, and the plurality of air springs can be inflated and deflated through the air circuit module 200.

[0107] According to the embodiment of the present invention, the air suspension system 300 includes the air circuit module 200 described above. Therefore, the noise generated by the air suspension system 300 during exhaust can be effectively reduced, which is beneficial to simplifying the structure of the air suspension system 300, reducing the production cost of the air suspension system 300, and improving the production and assembly efficiency of the air suspension system 300.

[0108] like Figure 7 As shown, the vehicle 400 according to an embodiment of the present invention includes the exhaust module 100 described above, the air passage module 200 described above, or the air suspension system 300 described above.

[0109] According to the vehicle 400 of the present invention, since the vehicle 400 includes the exhaust module 100, the air circuit module 200, or the air suspension system 300, the noise generated during the operation of the vehicle 400 can be effectively reduced, and the time point of peak noise can be effectively delayed. This is beneficial to improving human hearing, enhancing the user's driving experience, simplifying the structure of the vehicle 400, reducing the production cost of the vehicle 400, and improving the production and assembly efficiency of the vehicle 400.

[0110] 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 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.

[0111] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An exhaust module for a gas path module, characterized in that, The air passage module includes an air passage connecting the compressor and the air spring, and the exhaust module includes: The valve body has a mounting cavity and a first channel and a second channel. The first channel is adapted to communicate with the atmospheric environment and the second channel is adapted to communicate with the gas passage. A valve stem assembly is movably disposed in the mounting cavity to open or close the first channel and the second channel. The valve stem assembly divides the mounting cavity into a first chamber and a second chamber. The first chamber is provided with an elastic element that cooperates with the valve stem assembly to give the valve stem assembly a tendency to move toward closing the first channel and the second channel. The second channel can be selectively connected to the second chamber; The valve stem assembly is provided with a communication channel communicating with the first chamber, and the communication channel is connected to at least one of the first channel and the second channel; The exhaust module has a first state and a second state. In the first state, the first chamber and the second chamber are respectively connected to the first channel, and the valve stem assembly cuts off the first channel and the second channel. In the second state, the air passage is connected to the second chamber through the second channel, resulting in a pressure difference between the second chamber and the first chamber. The valve stem assembly connects the first channel and the second channel, and the connecting channel is connected to the second channel and the first chamber respectively to reduce the pressure difference between the first chamber and the second chamber.

2. The exhaust module according to claim 1, characterized in that, The connecting channel is always connected to the first channel, and the second channel is connected to the connecting channel when it is connected to the first channel.

3. The exhaust module according to claim 1, characterized in that, The valve body is provided with a first branch and a second branch, the first branch being connected to the first chamber and the second branch being connected to the second chamber; The second branch is connected to the first branch and the second channel.

4. The exhaust module according to claim 3, characterized in that, The second branch is provided with a first throttling section for throttling and reducing pressure, and / or the second channel is provided with a second throttling section for throttling and reducing pressure.

5. The exhaust module according to claim 3, characterized in that, It also includes a control valve, which includes a first interface, a second interface, and a third interface. The first interface is connected to the first branch, the second interface is connected to the second branch, and the third interface is connected to the second channel. The control valve is activated to switch the second interface to be connected to the first interface and the third interface.

6. The exhaust module according to claim 5, characterized in that, The control valve is provided with a third throttling section for throttling and pressure reduction, and the third throttling section is located at the second interface and / or the third interface.

7. The exhaust module according to claim 1, characterized in that, The first chamber has a cover at one end away from the second chamber. The cover is used to close the open end of the first chamber, and the valve stem assembly is limited to the movement of the valve stem assembly by engaging with the cover.

8. The exhaust module according to claim 7, characterized in that, The elastic element is elastically supported between the cover and the valve stem assembly.

9. A pneumatic circuit module, characterized in that, include: An air passage, wherein the air passage is provided with a main interface connected to an air spring; A compressor, which is connected to the gas passage to supply gas to the gas passage; An exhaust module, wherein the exhaust module is the same as any one of claims 1-8, wherein the second channel is connected to the main interface, and the first channel is connected to the atmospheric environment to exhaust gas outward.

10. An air suspension system, characterized in that, It includes the air circuit module according to claim 9 and a plurality of air springs, wherein the plurality of air springs are respectively connected to the main interface.

11. A vehicle, characterized in that, It includes an exhaust module according to any one of claims 1-8, an air passage module according to claim 9, or an air suspension system according to claim 10.

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