Air supply assembly, air suspension system and vehicle

Abstract

The utility model relates to air supply assembly, air suspension system and vehicle, air supply assembly includes air supply subassembly, conveying pipeline and silencing subassembly, one end of conveying pipeline communicates with air supply subassembly, the other end of conveying pipeline communicates with silencing subassembly, air supply subassembly is used for connecting the air spring of air suspension system to export or send the gas in the air spring to the air spring through conveying pipeline, silencing subassembly includes casing and filter piece, the casing is equipped with cavity and with the cavity communicates silencing hole, the cavity communicates with conveying pipeline, and the filter piece is located in the cavity. The silencing hole set up on the casing of silencing subassembly of the application can disperse pressure drop and reduce reflected sound wave, reduce the noise when the air spring exhausts, and can filter the impurity particle in the air through the filter piece, avoids the damage of air supply assembly.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to an air supply assembly, an air suspension system, and a vehicle. Background Technology

[0002] With the continuous advancement of automotive technology and the increasing demands of consumers for vehicle comfort and handling, air suspension systems have been widely adopted. An air suspension system consists of multiple components such as an air supply assembly and air springs. As the core component of the air suspension system, the air supply assembly can compress air to supply air to the air springs or expel gas from the air springs.

[0003] In the prior art, an air supply device for an automotive air suspension is provided, comprising: an air compressor body and a serpentine intake pipe and an exhaust pipe disposed on the surface of the air compressor body. The exhaust pipe is connected to the intake end of the automotive air suspension. The end of the intake pipe away from the air compressor body extends to a filter box. The filter box is provided with an interception and filtration assembly, which includes a primary filter and a fine filter fixed to the inner wall of the filter box to filter the air entering the air compressor body. In addition, it also includes a cleaning assembly for cleaning the debris intercepted on the surface of the primary filter and the fine filter.

[0004] However, although the aforementioned air supply equipment can filter the air entering the air supply equipment, the sudden drop in air pressure when the air inside the air spring is discharged through the air supply equipment will generate a lot of noise, resulting in a poor user experience of the air spring system. Utility Model Content

[0005] One objective of this invention is to provide an air supply assembly to solve the problem of how to filter the air entering the air spring while reducing noise during air spring exhaust. A second objective of this application is to provide an air suspension system. A third objective of this application is to provide a vehicle.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] In a first aspect, this application provides an air supply assembly for an air suspension system of a vehicle. The air supply assembly includes an air supply component, a delivery pipe, and a muffler component. One end of the delivery pipe is connected to the air supply component, and the other end of the delivery pipe is connected to the muffler component. The air supply component is used to connect to the air spring of the air suspension system so as to discharge gas from the air spring or supply air to the air spring through the delivery pipe. The muffler component includes a housing and a filter element. The housing has a cavity and a muffler hole communicating with the cavity. The cavity is connected to the delivery pipe, and the filter element is disposed in the cavity.

[0008] According to the aforementioned technical means, since one end of the delivery pipe is connected to the silencing component, which includes a housing with a cavity and a silencing hole communicating with the cavity, and the cavity is connected to the delivery pipe, when the gas discharged from the air spring enters the cavity of the housing, the gas will be discharged from the silencing hole of the housing. At this time, the silencing hole can disperse the pressure drop and reduce the reflected sound waves, thereby reducing the sound of the gas discharged from the silencing hole and reducing the noise when the air spring is venting. In addition, by installing a filter in the cavity, when air is supplied to the air spring through the delivery pipe, impurities in the air can be filtered out by the filter, preventing damage to the air supply assembly. Therefore, the air supply assembly provided in this application can not only filter the air entering the air suspension system, but also reduce the noise of the gas discharged from the air spring, thereby improving the user's experience with the air suspension system.

[0009] In some embodiments, the housing includes a body, an end cap, and a sound-absorbing plate. The body has a channel, the end cap covers one end of the channel, and the sound-absorbing plate covers the other end of the channel, so that the channel forms a cavity. The sound-absorbing hole includes a first sound-absorbing hole and a second sound-absorbing hole. The first sound-absorbing hole is located in the body, and the second sound-absorbing hole is located in the sound-absorbing plate. The second sound-absorbing hole is connected to the conveying pipe.

[0010] According to the above technical means, the main body is provided with a channel, the end cap covers one end of the channel and the sound-absorbing plate covers the other end of the channel. The first sound-absorbing hole is provided in the main body and the second sound-absorbing hole is provided in the sound-absorbing plate. The second sound-absorbing hole is connected to the conveying pipe, so that the compressed gas discharged from the air spring enters the channel after passing through the second sound-absorbing hole. This allows the compressed gas to be dispersed by the second sound-absorbing hole when entering the channel, thereby making the gas pressure in the channel more uniform and further reducing the noise when the compressed gas in the conveying pipe is discharged.

[0011] In some embodiments, a filter screen is disposed within a channel, the axial direction of the filter screen is aligned with the axial direction of the channel, and the space enclosed by the filter screen communicates with a second noise reduction hole.

[0012] According to the above technical means, since the axis of the filter screen is consistent with the axis of the channel, and the space enclosed by the filter screen is connected to the second silencer hole, when air is sent to the air spring through the conveying pipe, all the air enters the channel through the filter screen, ensuring the filtration quality of the air in the channel; and since the space enclosed by the filter screen is connected to the second silencer hole, there is no filter screen blocking the air when it enters the conveying pipe through the second silencer hole, ensuring the air intake efficiency.

[0013] In some embodiments, the filter screen includes a metal filter screen.

[0014] Based on the above technical means, by using a metal filter screen, the metal filter screen has high structural strength and can filter impurities well, and can avoid impurities from impacting and damaging the filter screen, thus ensuring the durability of the air supply assembly.

[0015] In some embodiments, the outer peripheral surface of the filter is in contact with the inner peripheral surface of the channel.

[0016] According to the above technical means, by having the outer peripheral surface of the filter screen contact the inner peripheral surface of the channel, on the one hand, it prevents airborne impurities from entering between the filter screen and the inner peripheral surface of the channel, so that the impurities are blocked by the filter screen at the first silencer hole, which facilitates the cleaning of impurities; on the other hand, when the air spring exhausts and supplies air to the air spring, it prevents the gas in the channel from being located between the filter screen and the inner peripheral surface of the channel, avoids gas turbulence in the channel, and thus avoids generating additional noise.

[0017] In some embodiments, the first silencing holes are arranged along the axial direction of the channel to form a set of first silencing holes, and multiple sets of first silencing holes are arranged along the circumferential direction of the channel.

[0018] According to the above technical means, by arranging multiple sets of first silencers along the circumference of the channel, the first silencers are evenly distributed on the circumference of the channel, ensuring that the air in the channel is evenly discharged or evenly enters the channel, thus ensuring the exhaust efficiency and intake efficiency of the channel.

[0019] In some embodiments, the body includes a first column segment and a second column segment. The first column segment is provided with a channel, the axis of which is consistent with the axis of the first column segment and the axis of the second column segment. The second column segment is connected to the end of the first column segment near the sound-absorbing plate. The second column segment is provided with an air inlet, which communicates with the second sound-absorbing hole. In the radial direction of the channel, the size of the first column segment is larger than the size of the second column segment.

[0020] According to the above technical means, since the axial direction of the channel is consistent with the axial direction of the first column segment and the second column segment, the second column segment is connected to the end of the first column segment near the sound-absorbing plate. The second column segment is provided with an air inlet, which is connected to the second sound-absorbing hole, so that the second column segment can be connected to the conveying pipe, thereby connecting the conveying pipe to the channel. In addition, since the size of the first column segment is larger than that of the second column segment, the radial dimension of the second column segment can be matched with the radial dimension of the conveying pipe while ensuring that the channel volume of the first column segment is large, which facilitates the connection between the second column segment and the conveying pipe.

[0021] In some embodiments, the delivery conduit includes a first conduit section and a second conduit section, and the air supply assembly includes an air filter connected between the first conduit section and the second conduit section.

[0022] The air filter is connected between the first and second pipe sections through the delivery pipeline, which prevents suspended dust particles in the air from entering the air supply assembly when air is supplied to the air spring, thereby improving the cleanliness of the air and thus increasing the service life of the air supply assembly.

[0023] Secondly, embodiments of this application also provide an air suspension system, which includes the air supply assembly described in the first aspect above.

[0024] Since the air suspension system provided in this application includes the air supply assembly in the first aspect, it can solve the same technical problems as the air supply assembly and achieve the same technical effects, so it will not be described again here.

[0025] Thirdly, embodiments of this application also provide a vehicle that includes the air suspension system described in the second aspect above.

[0026] Since the vehicle provided in this application includes the air suspension system of the second aspect, it can solve the same technical problems as the air suspension system described above and achieve the same technical effects, it will not be described again here. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an air suspension system provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the air supply assembly in the air suspension system shown.

[0029] Figure 3 for Figure 2 A schematic cross-sectional view of the silencer component in the air supply assembly shown.

[0030] Figure 4 for Figure 3 The exploded view of the sound-absorbing component shown is shown.

[0031] Figure 5 for Figure 2 The exploded view of the air filter in the air supply assembly is shown.

[0032] Figure Labels

[0033] 1000-Air Suspension System;

[0034] 100 - Air supply assembly; 200 - Air spring;

[0035] 1-Air supply components;

[0036] 2-Transportation pipeline; 21 First pipeline section; 22 Second pipeline section;

[0037] 3-Silencer assembly; 31-Filter element; 32-First silencer hole; 33-Second silencer hole; 34-Body; 35-End cap; 36-Silencer plate; 37-Channel; 38-Filter screen;

[0038] 341 - First column segment; 342 - Second column segment;

[0039] 4-Air filter; 41-Housing shell; 42-Air filter element; 43-First connecting pipe; 44-Second connecting pipe. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0044] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0045] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0046] This application provides a vehicle. The vehicle can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, etc.

[0047] Please see Figure 1 The vehicle includes a body, wheels, and an air suspension system 1000. The air suspension system 1000 is connected between the body and the wheels and is used to adjust the distance between the body and the wheels to ensure the stability of the vehicle when driving on bumpy roads and improve the driving experience for passengers.

[0048] The air suspension system 1000 includes an air supply assembly 100 and an air spring 200. The air spring 200 and the air supply assembly 100 are connected by a pipe. When the air spring 200 is venting, the compressed air in the air spring 200 is discharged through the air supply assembly 100. When the air spring 200 needs to be inflated, air is supplied to the air spring 200 through the air supply assembly 100.

[0049] Please see Figures 1 to 4 The air supply assembly 100 includes an air supply component 1, a delivery pipe 2, and a silencer component 3. One end of the delivery pipe 2 is connected to the air supply component 1, and the other end of the delivery pipe 2 is connected to the silencer component 3. The air supply component 1 is used to connect to the air spring 200 of the air suspension system 1000 so as to discharge gas in the air spring 200 or supply air to the air spring 200 through the delivery pipe 2. The silencer component 3 includes a housing and a filter element 31. The housing is provided with a cavity and a silencer hole communicating with the cavity. The cavity is connected to the delivery pipe 2, and the filter element 31 is disposed in the cavity.

[0050] In some examples, the air supply assembly 1 includes components such as an air compressor, an air tank, and a solenoid valve. When air needs to be supplied to the air spring 200, the air supply assembly 1 can draw in air through the delivery pipe 2, compress the air into high-pressure gas through the air compressor in the air supply assembly 1, and deliver the high-pressure gas to the air spring to stretch it. When the air spring 200 is compressed, the air compressor in the air supply assembly 1 does not work, and the solenoid valve opens, allowing air inside the air spring 200 to enter the delivery pipe 2 through the air supply assembly 1 and then be discharged through the delivery pipe 2.

[0051] The air tank stores compressed gas, which reacts promptly in conjunction with the air compressor. The solenoid valve controls the flow of the compressed gas, allowing the air spring 200 to be charged, deflated, or maintain pressure. For example, the air compressor's inlet is connected to the delivery pipe 2, and the air compressor's outlet is connected to the air tank. A solenoid valve is installed in the pipe connecting the air compressor's outlet and the air tank for control. The air tank is connected to the air spring 200.

[0052] Since one end of the delivery pipe 2 is connected to the muffler assembly 3, which includes a housing with a cavity and a muffler hole communicating with the cavity, and the cavity is connected to the delivery pipe 2, when the gas discharged from the air spring 200 enters the cavity of the housing, the gas will be discharged from the muffler hole of the housing. At this time, the muffler hole can disperse the pressure drop and reduce the reflected sound waves, thereby making the sound of the gas discharged from the muffler hole smaller, thus reducing the noise when the air spring 200 is venting. In addition, by setting a filter element 31 in the cavity, when air is supplied to the air spring through the delivery pipe 2, the filter element 31 can filter impurity particles in the air, preventing damage to the air supply assembly. Therefore, the air supply assembly 100 provided in this application can not only filter the air entering the air suspension system, but also reduce the noise of the gas discharged from the air spring, thereby improving the user's experience of the air suspension system.

[0053] In some embodiments, the housing includes a body 34, an end cap 35, and a sound-absorbing plate 36. The body 34 has a channel 37, the end cap 35 covers one end of the channel 37, and the sound-absorbing plate 36 covers the other end of the channel 37, so that the channel 37 forms a cavity. The sound-absorbing holes include a first sound-absorbing hole 32 and a second sound-absorbing hole 33. The first sound-absorbing hole 32 is located in the body 34, and the second sound-absorbing hole 33 is located in the sound-absorbing plate 36. The second sound-absorbing hole 33 communicates with the conveying pipe 2. For example, the body 34 has mounting grooves at both ends of the channel 37, and the edges of the end cap 35 and the sound-absorbing plate 36 are inserted into the mounting grooves for installation. For another example, the main body 34 has an installation groove at one end of the channel 37 and a stop extending circumferentially along the channel 37 at the other end. The edge of the end cap 35 is inserted into the installation groove to realize the installation of the end cap 35. One end of the filter element 31 abuts against the end cap 35 and the other end abuts against the sound-absorbing plate 36. The sound-absorbing plate 36 is located between the filter element 31 and the stop, thereby realizing the installation of the sound-absorbing plate 36.

[0054] The main body 34 has a channel 37, an end cap 35 covers one end of the channel 37, and a silencing plate 36 covers the other end of the channel 37. A first silencing hole 32 is located on the main body 34, and a second silencing hole 33 is located on the silencing plate 36. The second silencing hole 33 is connected to the conveying pipe 2, so that the compressed gas discharged from the air spring 200 enters the channel 37 after passing through the second silencing hole 33. This allows the compressed gas to be dispersed by the second silencing hole 33 when entering the channel 37, thereby making the gas pressure in the channel 37 more uniform. When the gas in the channel 37 is discharged through the first silencing hole 32, it can be dispersed again by the first silencing hole 32, thereby further reducing the noise when the compressed gas in the conveying pipe 2 is discharged.

[0055] In some examples, the shell can be a cylindrical structure, a cuboid structure, an elliptical cylindrical structure, or other regular or irregular structures, and this application does not make specific limitations in this regard.

[0056] In some embodiments, the filter element 31 includes a cylindrical filter screen 38 disposed within a channel 37, with the axial direction of the filter screen 38 aligned with the axial direction of the channel 37. The space enclosed by the filter screen 38 communicates with the second silencing hole 33. For example, the filter screen 38 is a cylindrical shape with openings at both ends. Multiple filter holes are provided on the peripheral wall of the filter screen 38 for filtering impurities in the air. The outer peripheral surface of the filter screen 38 corresponds to the first silencing hole 32. One axial end of the filter screen 38 contacts the end cap 35, and the other axial end of the filter screen 38 contacts the silencing plate 36. The second silencing hole 33 corresponds to the opening at the end of the filter screen 38.

[0057] Since the axis of the filter screen 38 is aligned with the axis of the channel 37, and the space enclosed by the filter screen 38 is connected to the second silencer hole 33, when air is supplied to the air spring 200 through the delivery pipe 2, the air will pass through the filter screen 38 during its entry into the channel 37, thereby filtering the air and ensuring the filtration quality of the air in the channel 37. Furthermore, since the space enclosed by the filter screen 38 is connected to the second silencer hole 33, the air is not blocked by the filter screen when it enters the delivery pipe 2 through the second silencer hole 33, thus ensuring the air intake efficiency.

[0058] Furthermore, when the gas in the air spring 200 is discharged through the air supply assembly 100, the gas is first silenced by the second silencer hole 33 in the silencer plate 36. Then, as the gas enters the first silencer hole 32, it passes through the filter screen 38. At this time, the filter holes on the filter screen 38 can also silence the gas. The gas silenced by the filter screen 38 is discharged through the first silencer hole 32, and the first silencer hole 32 silences the gas again, thereby further improving the noise reduction effect of the gas.

[0059] In some other embodiments, the filter element 31 includes a filter plate disposed on the side of the silencer plate 36 near the end cap 35, and the air is filtered through the filter plate before entering the conveying pipe 2.

[0060] In some embodiments, filter 38 includes a metal filter. For example, the metal filter may be made of a corrosion-resistant metal, such as stainless steel, aluminum alloy, copper, silver, etc.

[0061] By using a metal filter, which has high structural strength, impurities can be filtered effectively and impurities can be prevented from impacting and damaging the filter 38, thus ensuring the durability of the air supply assembly 100.

[0062] In related technologies, air filters 38 are typically made of non-metallic materials, such as sponge, fiber filters, or non-woven fabric. When a vehicle travels through flooded roads or in rainy weather, the filter 38 absorbs moisture, resulting in high moisture content in the air passing through it. This can easily lead to rust and corrosion of the components in the air supply assembly 100. In contrast, this embodiment uses a metal filter to prevent moisture absorption by the filter 38 due to flooded roads or rainy weather. This ensures lower moisture content in the air passing through the filter, preventing rust and damage to the components in the air supply assembly 100, and thus ensuring the durability of the air supply assembly.

[0063] In some other embodiments, the filter screen 38 includes a non-metallic filter screen, such as a filter screen 38 made of sponge, fiber filter element, non-woven fabric, etc.

[0064] In some embodiments, the outer peripheral surface of the filter 38 contacts the inner peripheral surface of the channel 37. For example, the outer peripheral surface of the filter 38 matches the shape of the inner peripheral surface of the channel 37, and the outer peripheral surface of the filter 38 and the inner peripheral surface of the channel 37 are connected by adhesive dispensing or welding.

[0065] By having the outer circumferential surface of the filter screen 38 contact the inner circumferential surface of the channel 37, on the one hand, airborne impurities are prevented from entering between the filter screen 38 and the inner circumferential surface of the channel 37, thus facilitating the cleaning of these impurities; on the other hand, the contact between the outer circumferential surface of the filter screen 38 and the inner circumferential surface of the channel 37 minimizes the gap between them. This prevents turbulent airflow between the filter screen and the inner circumferential surface of the channel 37 when the air spring 200 is venting or supplying air, thereby avoiding additional noise and further improving the noise reduction effect.

[0066] In some other embodiments, the outer peripheral surface of the filter screen 38 is spaced apart from the inner peripheral surface of the channel 37, and there is a gap between the outer peripheral surface of the filter screen 38 and the inner peripheral surface of the channel 37. When air is supplied to the air spring 200, the air first enters the gap through the first silencer hole 32, then passes through the filter screen 38 and enters the delivery pipe through the second silencer hole 33.

[0067] In some embodiments, the first silencing holes 32 are arranged along the axial direction of the channel 37 to form a set of first silencing holes, and multiple sets of first silencing holes are arranged along the circumferential direction of the channel 37.

[0068] A set of first silencers is formed by arranging the first silencers 32 along the axial direction of the channel 37. Multiple sets of first silencers are arranged along the circumference of the channel 37, so that the first silencers 32 are evenly distributed on the circumference of the channel 37, ensuring that the air in the channel is evenly discharged or evenly enters the channel, thus ensuring the exhaust efficiency and intake efficiency of the channel.

[0069] In some embodiments, the body 34 includes a first column segment 341 and a second column segment 342. The first column segment 341 is provided with a channel 37, the axial direction of which is aligned with the axial direction of the first column segment 341 and the second column segment 342. The second column segment 342 is connected to the end of the first column segment 341 near the muffler plate 36 and is provided with an air inlet that communicates with a second muffler hole 33. In the radial direction of the channel 37, the dimension of the first column segment 341 is larger than the dimension of the second column segment 342. For example, the first column segment 341 and the second column segment 342 are cylindrical.

[0070] For example, the first column segment 341 and the second column segment 342 are integrally formed using casting or machining processes. As another example, the first column segment 341 and the second column segment 342 are sealed together using fasteners such as bolts, screws, and rivets. As yet another example, the radial dimension of the outer circumference of the first column segment 341 is consistent with the radial dimension of the outer circumference of the conveying pipe 2, and the first column segment 341 is inserted into the conveying pipe 2 and connected by a clamp.

[0071] Since the axial direction of the channel 37 is consistent with the axial direction of the first column segment 341 and the second column segment 342, the second column segment 342 is connected to the end of the first column segment 341 near the sound-absorbing plate 36. The second column segment 342 is provided with an air inlet, which is connected to the second sound-absorbing hole 33, so that the second column segment 342 can be connected to the conveying pipe 2, thereby connecting the conveying pipe 2 to the channel 37. In addition, since the size of the first column segment 341 is larger than that of the second column segment 342, the radial dimension of the second column segment 342 can be matched with the radial dimension of the conveying pipe 2 while ensuring that the channel 37 of the first column segment 341 has a larger volume, which facilitates the connection of the second column segment 342 to the conveying pipe 2.

[0072] In some other embodiments, the main body 34 has a sealing plate at one end facing the sound-absorbing plate 36. The sealing plate has a connecting hole that communicates with the second sound-absorbing hole. The inner diameter of the connecting hole matches the outer diameter of the conveying pipe 2. When the conveying pipe is connected to the main body 34, the conveying pipe 2 can be inserted into the connecting hole to achieve communication between the conveying pipe 2 and the channel 37.

[0073] Please see Figures 1 to 5 In some embodiments, the delivery conduit 2 includes a first conduit section 21 and a second conduit section 22, and the air supply assembly 100 further includes an air filter 4 connected between the first conduit section 21 and the second conduit section 22. For example, the air filter includes a housing 41 and an air filter element 42, the air filter element 42 being disposed within the housing 41. The housing 41 is provided with a first connecting pipe 43 and a second connecting pipe 44, the first connecting pipe 43 being connected to the first conduit section 21, and the second connecting pipe 44 being connected to the second conduit section 22.

[0074] The air filter 4 is connected between the first pipe section 21 and the second pipe section 22 through the delivery pipe 2, which prevents suspended dust particles in the air from entering the air supply assembly 1 when air is delivered to the air spring 200, thereby further improving the cleanliness of the air and thus increasing the service life of the air supply assembly 100.

[0075] It should be noted that the noise reduction power level (SPL) is an important indicator for evaluating the noise reduction effect. Therefore, in order to ensure the noise reduction effect of the noise reduction component 3, the noise reduction component 3 can be initially designed and selected in the following way.

[0076] Formula 1: Silent power level SPL (dB) = a * 10 * log(1 / (1-Φ) + b * 10 log(Q / (ΠD)) 2 / 4)-Q / (Πd 2 / 4)).

[0077] Where a is the noise reduction coefficient of the noise reduction structure;

[0078] b is the noise reduction coefficient of the gas flow velocity in pipeline 2;

[0079] Φ is the porosity of the sound-absorbing holes, which is the ratio of the total area of ​​the sound-absorbing holes in the sound-absorbing structure to the total area of ​​the sound-absorbing structure.

[0080] Q represents the gas displacement;

[0081] D is the diameter of channel 37 of the noise reduction component 3, which can be adjusted by designing the noise reduction component 3;

[0082] d is the diameter of the conveying pipe 2, which can be adjusted by designing the noise reduction component 3.

[0083] In Formula 1, a is the noise reduction coefficient of the noise reduction structure, b is the noise reduction coefficient of the gas flow velocity in the conveying pipe 2, Q can be determined by the gas displacement of the air suspension system 1000, D is the diameter of the channel 37, which can be adjusted according to the design and is a known quantity, and d is the diameter of the conveying pipe 2, which can be adjusted according to the design and is a known quantity.

[0084] Therefore, by calculating the porosity Φ, the silencer power level (SPL) can be evaluated. When the channel 37 of the silencer component 3 is cylindrical, Φ is calculated as follows:

[0085] The length of channel 37 of the silencing component 3 is L; the total area of ​​channel 37 is S = 2πD / 2 * L + πD 2 / 4;

[0086] If the diameter of the first silencing hole 32 on the body 34 is r1 and the number of holes is n1, then the total area of ​​the first silencing hole 32 is S1 = Πr1. 2 *n1;

[0087] If the diameter of the second silencing hole 33 on the silencing plate 36 is r2 and the number of holes is n2, then the total area of ​​the second silencing hole 33 is S2 = Πr2. 2 *n2;

[0088] Formula 2: Porosity Φ=(S1+S2) / S=(Πr1) 2 *n1+Πr2 2 *n2) / (2ΠD / 2*L+ΠD 2 / 4).

[0089] After determining that the diameter of channel 37 is D, the length is L, the diameter r1 and number n1 of the first silencing hole 32, and the diameter r2 and number n2 of the second silencing hole 33, the porosity Φ can be calculated using formula 2, and the silencing power level SPL can be calculated using formula 1. Then, the silencing effect of the silencing component 3 can be evaluated using the silencing power level SPL.

[0090] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0091] The application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the application to the described embodiments. Furthermore, those skilled in the art will understand that the application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application.

Claims

1. An air supply assembly, characterized in that, An air supply assembly (100) for a vehicle air suspension system includes an air supply component (1), a delivery pipe (2), and a muffler component (3). One end of the delivery pipe (2) is connected to the air supply component (1), and the other end of the delivery pipe (2) is connected to the muffler component (3). The air supply component (1) is used to connect to the air spring (200) of the air suspension system (1000) so as to discharge gas in the air spring (200) or supply air to the air spring (200) through the delivery pipe (2). The noise reduction assembly (3) includes a housing and a filter element (31). The housing has a cavity and a noise reduction hole communicating with the cavity. The cavity is connected to the conveying pipe (2). The filter element (31) is disposed in the cavity.

2. The air supply assembly according to claim 1, characterized in that, The housing includes a body (34), an end cap (35), and a sound-absorbing plate (36). The body (34) has a channel (37). The end cap (35) covers one end of the channel (37), and the sound-absorbing plate (36) covers the other end of the channel (37), so that the channel (37) forms the cavity. The silencing holes include a first silencing hole (32) and a second silencing hole (33). The first silencing hole (32) is located on the body (34), and the second silencing hole (33) is located on the silencing plate (36). The second silencing hole (33) is connected to the conveying pipe (2).

3. The air supply assembly according to claim 2, characterized in that, The filter element (31) includes a cylindrical filter screen (38), which is disposed in the channel (37). The axial direction of the filter screen (38) is consistent with the axial direction of the channel (37), and the space enclosed by the filter screen (38) is connected to the second noise reduction hole (33).

4. The air supply assembly according to claim 3, characterized in that, The filter (38) includes a metal filter.

5. The air supply assembly according to claim 3, characterized in that, The outer peripheral surface of the filter (38) is in contact with the inner peripheral surface of the channel (37).

6. The air supply assembly according to claim 2, characterized in that, The first silencing holes (32) are arranged along the axial direction of the channel (37) to form a set of first silencing holes, and multiple sets of first silencing holes are arranged along the circumferential direction of the channel (37).

7. The air supply assembly according to claim 2, characterized in that, The body (34) includes a first column segment (341) and a second column segment (342). The first column segment (341) is provided with the channel (37), and the axial direction of the channel (37) is consistent with the axial direction of the first column segment (341) and the second column segment (342). The second column segment (342) is connected to the end of the first column segment (341) near the sound-absorbing plate (36). The second column segment (342) is provided with an air inlet, which is connected to the second sound-absorbing hole (33). In the radial direction of the channel (37), the size of the first column segment (341) is larger than the size of the second column segment (342).

8. The air supply assembly according to any one of claims 1-7, characterized in that, The delivery pipe (2) includes a first pipe section (21) and a second pipe section (22), and the air supply assembly (100) further includes an air filter (4) connected between the first pipe section (21) and the second pipe section (22).

9. An air suspension system, characterized in that, Includes an air supply assembly (100) and an air spring (200) as described in any one of claims 1-8, wherein the air supply assembly (100) is connected to the air spring (200) and is used to supply air to the air spring (200) or to discharge gas from the air spring (200).

10. A vehicle, characterized in that, Includes the air suspension system as described in claim 9.

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