Filtering silencing device and air suspension system

Abstract

The application provides a filtering and silencing device and an air suspension system. The filtering and silencing device comprises a housing, a first one-way flow element silencing part and a filtering part. The housing comprises an atmosphere communication port and an air pump interface, and a first chamber, a second chamber and a vent are arranged in the housing; a first one-way flow element is arranged at the vent, and the gas in the first chamber can enter the second chamber through the first one-way flow element; the silencing part is arranged in the second chamber, and a first channel is arranged in the silencing part, one end of the first channel being in communication with the vent; the filtering part is at least partially arranged in the first chamber; the first chamber is in communication with the atmosphere communication port, and the first channel is in communication with the air pump interface; or the first chamber is in communication with the air pump interface, and the second chamber is in communication with the atmosphere communication port.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a filtering and noise reduction device and an air suspension system. Background Technology

[0002] Cars equipped with air suspension can detect changes in vehicle height based on signals from distance sensors. By controlling the air suspension, the car's chassis can be lowered or raised, thereby improving vehicle stability, enabling the car to adapt to complex road conditions, and enhancing driving comfort.

[0003] Air suspension adjusts the vehicle's chassis height by inflating and deflating air. However, the deflation process generates noise, which can negatively impact the user experience. Summary of the Invention

[0004] This application provides a filtration and noise reduction device and an air suspension system.

[0005] A first aspect of this application provides a filtering and noise reduction device for an air suspension system, the filtering and noise reduction device comprising:

[0006] The housing includes an atmospheric vent and an air pump interface; the housing contains a first chamber, a second chamber, and a vent, the first chamber and the second chamber being connected through the vent; a first one-way flow element is disposed at the vent, allowing gas in the first chamber to enter the second chamber through the first one-way flow element;

[0007] A silencing section is provided in the second chamber, and a first channel is provided in the silencing section, one end of which is connected to the vent.

[0008] The filter section is at least partially disposed within the first chamber;

[0009] The first chamber is connected to the atmospheric vent, and the first channel is connected to the air pump interface. Gas entering the first chamber through the atmospheric vent passes through the filter and flows to the first one-way flow element, then flows into the first channel through the first one-way flow element and exits through the air pump interface. Gas flowing into the first channel through the air pump interface exits through the side wall of the silencer and then flows through the first chamber before exiting. Alternatively...

[0010] The first chamber is connected to the air pump interface, and the second chamber is connected to the atmospheric connection port. Gas entering the second chamber through the atmospheric connection port enters the first chamber, then flows through the filter section to the air pump interface and is discharged. Gas flowing into the first chamber through the air pump interface flows into the first channel through the first one-way flow element, then flows through the side wall of the silencer section to the atmospheric connection port and is discharged.

[0011] Optionally, when the first chamber is connected to the atmospheric vent and the first channel is connected to the air pump interface, the filter section is provided with a second channel, the second channel is connected to the air vent, and the end of the second channel facing the atmospheric vent is blocked.

[0012] Optionally, the filter is partially located in the first chamber and partially in the second chamber, the silencer is located in the second channel, and the flow resistance of the silencer to the gas is greater than the flow resistance of the first one-way flow element to the gas; the gas flowing into the first channel through the air pump interface flows into the filter through the side wall of the silencer and then flows to the atmospheric connection port through the filter.

[0013] Optionally, when the first chamber is connected to the atmospheric vent and the first channel is connected to the air pump interface, the first chamber further includes a first air passage disposed between the inner wall of the housing and the filter section. The first air passage is connected to the atmospheric vent. The housing is also provided with a through hole located between the first air passage and the second chamber. The filtration and silencing device further includes a second one-way flow element. The second one-way flow element is disposed at the through hole. Gas flowing out through the side wall of the silencing section enters the first air passage through the second one-way flow element and flows out through the atmospheric vent.

[0014] Optionally, the second unidirectional flow element includes a boss extending from the inner wall of the housing and a first sealing portion. The first sealing portion is located on the side of the boss facing the first air passage, and the end of the first sealing portion away from the boss is fixedly disposed, while the end facing the inner wall of the housing abuts against the boss to block the through hole. Gas in the second chamber flows through the through hole, causing the end of the first sealing portion facing the inner wall of the housing to separate from the boss, and the gas flows into the first air passage through the gap between the first sealing portion and the boss.

[0015] Optionally, when the first chamber is connected to the air pump interface and the second chamber is connected to the atmospheric vent, the filter section is provided with a second channel, one end of the second channel is connected to the vent, and the other end is connected to the air pump interface; the gas entering the second channel through the air pump interface enters the first channel through the vent, and then passes through the silencer section and is discharged through the atmospheric vent.

[0016] Optionally, the first chamber further includes a first air passage disposed between the inner wall of the housing and the filter section, and the second chamber further includes a second air passage disposed between the inner wall of the housing and the silencer section, wherein the first air passage and the second air passage are connected; gas entering the second air passage through the atmospheric connection port enters the first air passage, then passes through the filter section and is discharged through the air pump interface; gas flowing in through the air pump interface enters the first channel through the first one-way flow element, then enters the second air passage through the silencer section and is discharged through the atmospheric connection port.

[0017] Optionally, the first unidirectional flow element includes a second blocking part and an elastic element. The end of the elastic element facing away from the first chamber is fixed, and the second blocking part is disposed at the end of the elastic element facing the first chamber, blocking the vent. Gas in the first chamber pushes the second blocking part, compressing the elastic element and opening the vent, allowing gas to enter the first channel through the vent. The elastic element extends, and the second blocking part blocks the vent.

[0018] Optionally, the filtration and noise reduction device further includes a first support frame and a second support frame located in the second chamber. Both the first support frame and the second support frame are hollow structures. The side wall of the first support frame is provided with a first vent hole, and the side wall of the second support frame is provided with a second vent hole. The first support frame is sleeved on the outside of the second support frame, the second support frame is disposed in the first channel, and the noise reduction part is sandwiched between the first support frame and the second support frame.

[0019] Optionally, the filtration and silencing device further includes a partition, at least partially located between the first chamber and the second chamber, with the vent provided in the partition; when the first chamber is connected to the atmospheric connection and the first channel is connected to the air pump interface, the end of the silencing part facing the first chamber abuts against the partition, and the end of the silencing part facing the air pump interface abuts against the inner wall of the housing; when the first chamber is connected to the air pump interface and the second chamber is connected to the atmospheric connection, the end of the silencing part facing the first chamber abuts against the partition, and the end of the silencing part away from the first chamber abuts against the inner wall of the housing, and the atmospheric connection is located on the periphery of the end of the silencing part away from the first chamber.

[0020] A second aspect of this application provides an air suspension system, the air suspension system including air suspension and the above-mentioned filtering and noise reduction device.

[0021] The filtering and noise reduction device and air suspension system provided in this application embodiment are provided in which the housing, the first one-way flow element, the noise reduction part and the filter part are all disposed in the housing. The filtering and noise reduction device has a compact structure, which helps to reduce the space it occupies.

[0022] With the first chamber connected to the atmospheric vent and the first channel connected to the air pump interface, when inflating the air suspension, gas enters the first chamber through the atmospheric vent. After being filtered by the filter, the gas flows into the first channel of the muffler through the first one-way flow element at the vent, and then enters the air pump through the air pump interface. The filter can filter impurities in the air, preventing dust from clogging the muffler and preventing it from damaging other components in the air suspension system. Since the muffler has a first channel connected to the vent, the gas flowing through the vent during inflation will directly enter the first channel and will not flow through the muffler. That is, the gas will not pass through the muffler during the air suspension inflation process, which helps to extend the service life of the muffler. When the air suspension deflates, the gas entering the housing through the air pump interface enters the first channel inside the muffler. Due to the unidirectional conduction characteristic of the first one-way flow element, the airflow cannot enter the first chamber from the vent. Instead, the gas flows out through the side wall of the muffler, flows through the first chamber to the atmospheric connection, and is discharged from the housing. As the gas flows through the muffler, the noise of the gas is reduced, thereby reducing the noise level during the operation of the air suspension.

[0023] With the first chamber connected to the air pump interface and the second chamber connected to the atmospheric vent, when inflating the air suspension, gas enters the second chamber through the atmospheric vent. The gas then enters the first chamber, is filtered by the filter, and enters the air pump through the air pump interface. Due to the unidirectional flow characteristic of the first one-way flow element, gas entering the second chamber during inflation cannot enter the first chamber through the vent. The gas in the second chamber must flow through the filter located in the first chamber before entering the air pump through the air pump interface, thus preventing dust in the gas from entering the air pump. When deflating the air suspension, gas enters the first chamber through the air pump interface, then enters the first channel within the silencer through the vent, and finally exits through the atmospheric vent after passing through the silencer. This configuration reduces the noise level generated by the gas as it flows through the silencer, improving the user experience.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 This is a schematic diagram of the structure of a filtering and silencing device provided for an exemplary embodiment of this application.

[0027] Figure 2 A schematic diagram of the structure of a filtering and silencing device provided for another exemplary embodiment of this application.

[0028] Figure 3 A schematic diagram of the structure of a filtering and silencing device provided as another exemplary embodiment of this application.

[0029] Figure 4 A three-dimensional structural diagram of the first support frame and partition of the filtration and silencing device provided in the embodiments of this application.

[0030] Figure 5 A cross-sectional view of the first support frame and partition of the filtration and silencing device provided in the embodiments of this application.

[0031] Figure 6 This is a schematic diagram of the structure of the second support frame of the filtration and silencing device provided in the embodiments of this application.

[0032] Figure 7 This is a schematic diagram of the filter section of the filtration and noise reduction device provided in the embodiments of this application.

[0033] Figure 8This is a schematic diagram of the gas flow direction when the air suspension is inflated using a filtering and noise reduction device provided as an exemplary embodiment of this application.

[0034] Figure 9 This is a schematic diagram of the gas flow direction of the filtering and silencing device provided in an exemplary embodiment of this application when the air suspension is deflating.

[0035] Figure 10 A schematic diagram of the gas flow direction of the filtering and silencing device provided in another exemplary embodiment of this application when inflating the air suspension.

[0036] Figure 11 A schematic diagram of the gas flow direction of a filtering and silencing device provided as another exemplary embodiment of this application when the air suspension bleeds.

[0037] Figure 12 A schematic diagram of the gas flow direction when the filter and noise reduction device provided in this application inflates the air suspension, which is yet another exemplary embodiment of this application.

[0038] Figure 13 A schematic diagram of the gas flow direction of the filtering and silencing device provided in another exemplary embodiment of this application when the air suspension is deflating. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should be understood that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "front," "rear," "lower," and / or "upper" and similar terms are for illustrative purposes only and are not limited to a location or spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects.

[0042] The following detailed description, with reference to the accompanying drawings, describes the air suspension filtering and noise reduction device and the air suspension provided in the embodiments of this application. Unless otherwise specified, the features of the following embodiments and implementations can complement or combine with each other.

[0043] This application provides an air suspension system, which includes a filter and noise reduction device and an air suspension. The filter and noise reduction device includes an atmospheric connection port and an air pump interface, the air pump interface being connected to the air inlet of the air suspension.

[0044] In one embodiment, the air suspension system further includes an air pump, a distribution valve, and an air tank. The atmospheric vent of the filter and silencer is connected to the atmosphere, and the air pump interface is connected to the air pump. Gas enters the air pump after passing through the filter and silencer, and then enters the distribution valve through the air pump. The distribution valve distributes the gas to the air suspension and the air tank.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, the air suspension system filtration and noise reduction device 100 provided in this application embodiment includes a housing 10, a first one-way flow element 20, a noise reduction part 30, and a filter part 40.

[0046] The housing 10 includes an atmospheric connection port 101 and an air pump interface 102; the housing 10 is provided with a first chamber 103, a second chamber 104 and an air vent 105, and the first chamber 103 and the second chamber 104 are connected through the air vent 105.

[0047] The first one-way flow element 20 is disposed at the vent 105, and the gas in the first chamber 103 can enter the second chamber 104 through the first one-way flow element 20.

[0048] The silencing part 30 is disposed in the second chamber 104, and a first channel 301 is provided in the silencing part 30. One end of the first channel 301 is connected to the vent 105.

[0049] The filter section 40 is at least partially disposed within the first chamber 103.

[0050] The first chamber 103 is connected to the atmospheric connection port 101, and the first channel 301 is connected to the air pump interface 102. The gas entering the first chamber 103 through the atmospheric connection port 101 flows to the first one-way flow element 20 after passing through the filter section 40, and then flows into the first channel 301 through the first one-way flow element 20, and is discharged through the air pump interface 102. The gas flowing into the first channel 301 through the air pump interface 102 flows out through the side wall of the silencer section 30, and then flows through the first chamber 103 and is discharged. Alternatively, the first chamber 103 is connected to the air pump interface 102, and the second chamber 104 is connected to the atmospheric connection port 101; the gas entering the second chamber 104 through the atmospheric connection port 101 enters the first chamber 103, then flows through the filter section 40 to the air pump interface 102 and is discharged; the gas flowing into the first chamber 103 through the air pump interface 102 flows into the first channel 301 through the first one-way flow element 20, then flows through the side wall of the silencer section 30 to the atmospheric connection port 101 and is discharged.

[0051] The filtering and silencing device 100 provided in this application embodiment includes a housing 10, a first one-way flow element 20, a silencing part 30, and a filtering part 40, all of which are disposed inside the housing. The filtering and silencing device has a compact structure, which helps to reduce the space it occupies.

[0052] When the first chamber 103 is connected to the atmospheric connection port 101 and the first channel 301 is connected to the air pump interface 102, when the air suspension is inflated, the gas enters the first chamber 103 through the atmospheric connection port 101. After being filtered by the filter section 40, the gas flows into the first channel 301 of the muffler section 30 through the first one-way flow element 20 at the vent 105, and then enters the air pump through the air pump interface 102. The filter section 40 can filter impurities in the air, preventing dust in the air from clogging the muffler section 30 and preventing it from damaging other components in the air suspension system. Since the muffler section 30 is provided with the first channel 301, which is connected to the vent 105, the gas flowing through the vent 105 during inflation will directly enter the first channel 301 and will not flow through the muffler section 30. That is, the gas will not pass through the muffler section 30 during the air suspension inflation process, which helps to extend the service life of the muffler section 30. When the air suspension deflates, the gas entering the housing 10 through the air pump interface 102 enters the first channel 301 inside the muffler 30. Due to the unidirectional conduction characteristic of the first one-way flow element 20, the airflow cannot enter the first chamber 103 from the vent 105. The gas then flows out through the side wall of the muffler 30, flows through the first chamber 103 to the atmospheric connection 101, and is discharged from the housing 10. When the gas flows through the muffler 30, the noise of the gas is reduced, thereby reducing the noise level during the operation of the air suspension.

[0053] With the first chamber 103 connected to the air pump interface 102 and the second chamber 104 connected to the atmospheric connection 101, when inflating the air suspension, gas enters the second chamber 104 through the atmospheric connection 101. The gas entering the second chamber 104 then enters the first chamber 103, is filtered by the filter section 40, and enters the air pump through the air pump interface 102. Due to the unidirectional conduction characteristic of the first one-way flow element 20, the gas entering the second chamber 104 during inflation cannot enter the first chamber through the vent 105. 103. The gas in the second chamber 104 must flow through the filter section 40 located in the first chamber 103 before entering the air pump through the air pump interface 102, thereby preventing dust in the gas from entering the air pump. When the air suspension deflates, the gas enters the first chamber 103 through the air pump interface 102, and then enters the first channel 301 in the silencer section 30 through the vent 105. After passing through the silencer section 30, the gas is discharged through the atmospheric connection 101. The gas flowing through the silencer section 30 can reduce the noise level generated by the gas, which helps to improve the user experience.

[0054] In one embodiment, the housing 10 may include a first housing 108 and a second housing 109, which are connected. During the assembly of the filter silencing device 100, the silencing part 30 can be first disposed in the second housing 109, the filter part 40 can be disposed in the first housing 108, and then the first housing 108 and the second housing 109 can be connected to complete the assembly of the filter silencing device 100. Using the first housing 108 and the second housing 109 facilitates the assembly of the filter silencing device 100. In some embodiments, the first housing 108 and the second housing 109 can be connected by welding or by a detachable method.

[0055] In one embodiment, the shell 10 can be made of engineering plastics, such as a mixture of PA6 (Polyamide-6) and GF (Glass Fiber), wherein the mass fraction of glass fiber can be 30%. Using this material gives the shell 10 good rigidity and strength while having a low density, which helps to reduce the weight of the shell 10. In other embodiments, the shell 10 can also be made of steel or other materials.

[0056] In one embodiment, the housing 10 includes a main body 11 and an air pump connector 13 extending outward from the main body 11. The air pump connector 13 is provided with the air pump interface 102. The silencer, filter, and first one-way flow element are disposed within the main body 11. The maximum outer diameter of the air pump connector 13 can range from 8 mm to 12 mm. For example, the maximum outer diameter of the air pump connector 13 can be 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, etc. By providing the air pump connector 13, it is convenient to connect the filter silencer 100 to other components.

[0057] In one embodiment, the maximum outer diameter of the main body 11 of the housing 10 in the gas flow direction ranges from 35mm to 45mm. For example, the maximum outer diameter of the housing 10 in the gas flow direction can be 35mm, 38mm, 40mm, 43mm, 45mm, etc. This arrangement results in a smaller space occupied by the filter and noise reduction device 100, saving interior space in the vehicle.

[0058] In one embodiment, the wall thickness of the housing 10 ranges from 2mm to 3mm. For example, the wall thickness of the housing 10 can be 2mm, 2.5mm, 3mm, etc. With this configuration, the housing 10 can maintain rigidity without occupying excessive internal space.

[0059] In one embodiment, the atmospheric vent 101 of the housing 10 is positioned opposite to the air pump interface 102. This arrangement facilitates the arrangement of the first one-way flow element 20, the silencer 30, and the filter 40 within the main body 11, while also allowing for smoother gas flow.

[0060] In one embodiment, the first unidirectional flow element 20 includes a second blocking portion 201 and an elastic member 202. The elastic member 202 is fixed at one end away from the first chamber 103, and the second blocking portion 201 is disposed at the end of the elastic member 202 facing the first chamber 103, blocking the vent 105. Gas in the first chamber 103 pushes the second blocking portion 201, compressing the elastic member 202 and opening the vent 105, allowing gas to enter the first channel 301 through the vent 105. When the elastic member 202 expands, the second blocking portion 201 blocks the vent 105. In some embodiments, the elastic member 202 may be a spring.

[0061] Furthermore, the first one-way flow element 20 also includes a guide rod 203 formed by the second blocking part 201 extending in a direction away from the vent 105, the guide rod 203 passing through the elastic member 202 and being movable relative to the elastic member 202 in its length direction.

[0062] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The filtering and silencing device further includes a partition 80, which is at least partially located between the first chamber 103 and the second chamber 104. The partition 80 divides the space within the housing 10 into the first chamber 103 and the second chamber 104, and the partition 80 has the vent 105. By providing the partition 80, the gas in the first chamber 103 and the second chamber 104 can be separated.

[0063] During the inflation of the air suspension, the second sealing part 201 moves away from the partition 80; after the inflation of the air suspension stops, the second sealing part 201 abuts against the partition 80.

[0064] In one embodiment, see Figure 4 and Figure 5 The partition 80 includes a body 802 and an extension 801 extending from the body 802 toward the first chamber 103, with the vent 105 penetrating the extension 801. A groove 803 is provided on the side of the body 802 facing the second chamber. When the second sealing part 201 blocks the vent, the second sealing part 201 is accommodated within the groove 803.

[0065] In one embodiment, see again Figure 1 , Figure 2 and Figure 3 The silencing part 30 has a ring structure, and the internal space of the ring structure is the first channel 301 of the silencing part 30.

[0066] In one embodiment, the silencing part 30 has a porous structure. Gas entering the housing 10 through the air pump interface 102 experiences a reduced flow rate as it passes through the holes in the silencing part 30, which helps reduce gas noise. When noise propagates through the holes in the silencing part 30, the sound waves are refracted and reflected within the porous structure, converting the gas's acoustic energy into heat energy, thereby continuously reducing the noise's energy and achieving a noise reduction effect. The porosity of the silencing part 30 can be set according to noise reduction requirements; for example, the porosity of the silencing part 30 can be above 70%.

[0067] In one embodiment, the material of the silencing part 30 can be PE (Polyethylene). When the material of the silencing part 30 is polyethylene, the pore size of the silencing part is small, resulting in a better energy reduction effect on noise and achieving a better noise reduction effect. The porosity of the silencing part affects the noise reduction effect, and the porosity of the silencing part can be determined according to the requirements of the noise reduction effect.

[0068] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The filtering and silencing device 100 further includes a first support frame 60 and a second support frame 70 located within the second chamber 104. See also Figure 4 , Figure 5 and Figure 6 Both the first support frame 60 and the second support frame 70 are hollow structures. The side wall of the first support frame 60 has a first vent hole 601, and the side wall of the second support frame 70 has a second vent hole 701. The first support frame 60 is sleeved on the outside of the second support frame 70, and the second support frame 70 is disposed within the first channel 301. The silencing part 30 is sandwiched between the first support frame 60 and the second support frame 70. The outer wall of the silencing part 30 abuts against the first support frame 60, and the inner wall abuts against the second support frame 70. Gas entering the housing through the air pump interface 102 can pass sequentially through the second vent hole 701, the silencing part 30, and the first vent hole 601, and finally be discharged through the atmospheric connection 101. With this configuration, the filtering and silencing device 100 can simultaneously allow gas to pass through and fix and support the silencing part 30, preventing the silencing part 30 from shifting under the impact of gas.

[0069] In one embodiment, see Figure 6The second support frame 70 is provided with a support 702, and the support has a through hole 703. The end of the elastic member 202 facing away from the first chamber is fixed to the outside of the support 702. The guide rod 203 passes through the through hole 703 and can slide within the through hole 703.

[0070] In one embodiment, the first support frame 60, the second support frame 70, and the second sealing part 201 may be made of a mixture of PA6 (Polyamide-6, nylon plastic polyamide 6) and GF (Glass Fiber), wherein the mass fraction of glass fiber may be 30%. Using this mixture of materials in the first support frame 60, the second support frame 70, and the second sealing part 201 can achieve good strength and rigidity while reducing their weight. In some embodiments, the first support frame 60, the second support frame 70, and the second sealing part 201 may also be made of other rigid materials.

[0071] The filtering and noise reduction device 100 provided in this application includes two implementation methods. The first implementation method is as follows: Figure 1 and Figure 2 As shown, the first chamber 103 is connected to the atmospheric connection port 101, and the first channel 301 is connected to the air pump interface 102; in the second embodiment, as... Figure 3 As shown, the first chamber 103 is connected to the air pump interface 102, and the second chamber 104 is connected to the atmospheric connection port 101.

[0072] The first implementation method is described below: the first chamber 103 is connected to the atmospheric connection port 101, and the first channel 301 is connected to the air pump interface 102.

[0073] In one embodiment, see Figure 1 and Figure 2 The filter section 40 is provided with a second channel 401, which is connected to the vent 105. The end of the second channel 401 facing the atmospheric connection 101 is blocked. By blocking the end of the second channel 401 facing the atmospheric connection 101, the gas flowing in from the atmospheric connection 101 cannot directly enter the filter section 40 through the end of the second channel 401 facing the atmospheric connection 101. The gas needs to flow into the second channel 401 through the side wall of the filter section 40, thus ensuring the cleanliness of the gas flowing into the second chamber 104.

[0074] In one embodiment, the first chamber 103 further includes a venting chamber 14 located between the filter section 40 and the atmospheric connection port 101, the venting chamber 14 being connected to the atmospheric connection port 101. By providing the venting chamber 14, it is beneficial for the air suspension to receive gas during inflation and to release gas during deflation.

[0075] exist Figure 1 and Figure 2 In the illustrated embodiment, during the inflation of the air suspension, the gas entering the first chamber 103 through the atmospheric vent 101 passes through the filter section 40 and then exerts a force on the elastic member 202 through the second sealing section 201. When the force exerted by the gas on the elastic member 202 is greater than the elastic force of the elastic member 202, the elastic member 202 is compressed, causing the second sealing section 201 to move away from the vent 105. The vent 105 opens, and the gas in the first chamber 103 can enter the second chamber through the vent 105. Channel 301; after the air suspension stops being inflated, the force of the gas in the first chamber 103 on the elastic element 202 disappears, the elastic element extends, and drives the second sealing part 201 to move toward the vent 105, and the second sealing part 201 blocks the vent 105; during the deflation process of the air suspension, the force of the gas on the second sealing part 201 is in the same direction as the elastic force of the elastic element 202, and the second sealing part 201 blocks the vent 105 under the combined action of the force and the elastic force.

[0076] In one embodiment, see Figure 1 The end of the silencing part 30 facing the first chamber 103 abuts against the partition plate 80, and the end of the silencing part 30 facing the air pump interface 102 abuts against the inner wall of the housing 10. The port of the silencing part 30 facing the first chamber 103 surrounds the vent 105, and the port of the silencing part 30 facing the air pump interface 102 surrounds the air pump interface 102. With this configuration, during the inflation process of the filter silencing device, almost all the gas passing through the first chamber 103 enters the first channel 301 when it flows into the second chamber 104 through the vent 105, and then flows out through the air pump interface 102. The gas does not flow through the side wall of the silencing part 30, which can increase the service life of the silencing part 30 and also help ensure the smoothness of the inflation process.

[0077] Furthermore, the silencing section 30 includes a first sealing gasket 90 and a second sealing gasket 91. The first sealing gasket 90 is disposed at the end of the silencing section 30 facing the partition 80, and abuts against the partition 80. The second sealing gasket 91 is disposed at the end of the silencing section 30 facing the air pump interface 102, and abuts against the inner wall of the housing. The materials of the first sealing gasket 90 and the second sealing gasket 91 can be rubber or PU (Polyurethane). By providing the first sealing gasket 90 and the second sealing gasket 91, gas entering through the air pump interface 102 can be prevented from flowing out through the gap between the silencing section 30 and the partition 80 and the gap between the silencing section 30 and the inner wall of the housing 10, which is beneficial to achieving a better noise reduction effect.

[0078] In one embodiment, see Figure 7 The filter section 40 includes a housing 402 and a filter element 403. The housing 402 is at least disposed at the end of the filter element 403 facing the atmospheric connection port. The housing 402 blocks the end of the second channel 401 facing the atmospheric connection port 101.

[0079] In some embodiments, the housing 402 is also disposed at one end of the filter element 403 facing the air pump interface 102, and the end of the housing 402 facing the air pump interface 102 has an opening 404, through which the second channel 401 communicates with the air pump interface 102. This arrangement prevents the filter element 403 from being deformed by gas impact, while also making the filter section 40 structure compact and facilitating the installation of the filter silencer 100.

[0080] In one embodiment, the filter element 403 is made of filter paper or non-woven fabric. In other embodiments, the filter section 40 may be made of other materials with filtration functions. The filter section 40, made of folded filter paper or non-woven fabric, can filter dust from the gas, and its filtration efficiency is greater than or equal to 98% during the service life of the filter silencer 100. See also: [In one embodiment, see...] Figure 1 The first chamber 103 further includes a first air passage 106 disposed between the inner wall of the housing 10 and the filter section 40. The first air passage 106 communicates with the atmospheric connection port 101. The housing 10 also has a through hole 107 located between the first air passage 106 and the second chamber 104. The first air passage 106 communicates with the atmospheric connection port 101 through a ventilation cavity 14. The filtering and silencing device 100 further includes a second one-way flow element 50 disposed at the through hole 107. Gas flowing out through the side wall of the silencing section 30 enters the first air passage 106 through the second one-way flow element 50 and flows out through the atmospheric connection port 101. By setting the first air passage 106 and the second one-way flow element 50, when the gas is released, the gas does not pass through the filter section 40, but flows directly through the first air passage 106 to the atmospheric connection port 101. This reduces the impact of the high-pressure gas flowing out of the second chamber on the filter section 40, avoids damage and deformation of the filter section 40 under the action of high-pressure gas, and helps to extend the service life of the filter section 40.

[0081] In one embodiment, see Figure 8 and Figure 9 The second chamber 104 includes an air storage chamber 302 located between the first support frame 60 and the inner wall of the housing. The gas flowing out through the silencing part 30 first enters the air storage chamber 302, and then enters the first air passage 106 through the second one-way flow element 50.

[0082] When inflating the air suspension, the air pump operates, allowing atmospheric gas to enter the housing; see also Figure 8 Gas enters the ventilation chamber 14 through the atmospheric connection port 101, and then enters the first air passage 106 through the ventilation chamber 14. Since a second one-way flow element 50 is provided at the through hole 107 between the first air passage 106 and the second chamber 104, gas cannot flow into the second chamber 104 through the through hole 107. Therefore, the gas passes through the filter section 40 and enters the second channel 401 of the filter section 40. The gas entering the second channel 401 causes the vent 105 to open, and enters the first channel 301 through the vent 105. Then, it flows to the air suspension through the air pump interface 102.

[0083] When the air suspension deflates, see Figure 9 The air discharged from the air suspension enters the first channel 301 through the air pump interface 102, then flows through the side wall of the muffler 30 into the air storage chamber 302. The air entering the air storage chamber 302 opens the through hole 107 and flows into the first air passage 106 from the through hole 107. Then it flows through the ventilation chamber 14 to the atmospheric connection port 101, and finally flows out of the housing through the atmospheric connection port 101.

[0084] Further, see Figure 1 The second one-way flow element 50 includes a boss 501 extending from the inner wall of the housing 10 and a first blocking portion 502. The first blocking portion 502 is located on the side of the boss 501 facing the first air passage 106, and the end of the first blocking portion 502 away from the boss 501 is fixedly disposed, while the end facing the inner wall of the housing 10 abuts against the boss 501, blocking the through hole 107. Gas in the second chamber 104 flows through the through hole 107, causing the end of the first blocking portion 502 facing the inner wall of the housing 10 to separate from the boss 501, and the gas flows into the first air passage 106 through the gap between the first blocking portion 502 and the boss 501. With this configuration, the second one-way flow element 50 has a simple structure, does not occupy too much internal space of the housing 10, and is easy to install.

[0085] See Figure 9 When the air suspension deflates, the gas flowing into the housing 10 from the air pump interface 102 passes through the muffler 30 and flows to the through hole 107. The gas exerts a force on the first sealing part 502, causing the end of the first sealing part facing the inner wall of the housing 10 to move away from the boss 501. A gap is created between the first sealing part 502 and the boss 501, and the gas flows into the first air passage 106 through this gap. After the air suspension deflates, the first sealing part 502 is no longer subjected to the force of the gas, and the first sealing part 502 returns to its original shape, abutting against the boss 501. See also Figure 7When the air suspension is inflated, the end of the first sealing part 502 facing the inner wall of the housing 10 abuts against the boss 501, blocking the through hole 107 and preventing gas from entering the second chamber 104 through the through hole 107.

[0086] In one embodiment, the boss 501 is annular and surrounds the body 802 of the partition 80, and the through hole 107 is located between the partition 80 and the boss 501.

[0087] In one embodiment, such as Figure 1 As shown, the filter section 40 is entirely located within the first chamber 103. One end of the filter section 40 facing the atmospheric connection port 101 abuts against the inner wall of the housing, and the other end facing the second chamber 104 abuts against the partition plate 80. The second channel 401 is connected to the vent 105 through the opening 404, and the area of ​​the opening 404 is larger than the area of ​​the vent 105.

[0088] Furthermore, the extension 801 of the partition 80 is fitted into the second channel 401. The extension 801 can be frustoconical, meaning the cross-sectional area of ​​the end face of the extension 801 facing away from the second chamber 104 is smaller than the cross-sectional area at its connection with the body 802. This configuration allows the extension 801 to be securely fitted into the second channel 401, ensuring that gas entering the second channel 401 through the filter 40 enters the second chamber 104 through the vent 105 within the extension 801. It also improves the stability of the filter installation.

[0089] In one embodiment, the material of the first sealing portion 502 can be an elastic material, such as PU (Polyurethane). In other embodiments, the material of the first sealing portion 502 can also be other elastic materials such as rubber. Polyurethane material has the characteristics of wear resistance, high strength, and high resilience. Using polyurethane material for the first sealing portion 502 helps to improve the sealing performance of the second one-way flow element 50 when the air suspension is inflated, and makes the first sealing portion 502 easy to deform when the air suspension deflates, facilitating gas passage and improving the service life of the second one-way flow element 50.

[0090] Furthermore, the first sealing part 502 can be fixedly disposed on the partition plate 80 by a vulcanization coating process. Through vulcanization coating, the first sealing part 502 can be tightly bonded to the partition plate 80, preventing the first sealing part 502 from falling off under the impact of gas. Of course, the first sealing part 502 can also be fixedly disposed in other ways.

[0091] In one embodiment, see Figure 4 and Figure 5The partition 80 is fixedly connected to the end of the first support frame 60 facing the first chamber 103. This arrangement simplifies the internal structure of the filter and silencer device 100 and increases the stability of the fit of each component.

[0092] In one embodiment, see Figure 2 The filter section 40 is partially located within the first chamber 103 and partially within the second chamber 104, while the silencing section 30 is located within the second channel 401. The flow resistance of the silencing section 30 to the gas is greater than that of the first one-way flow element 20. Gas flowing into the first channel 301 through the air pump interface 102 flows into the filter section 40 through the side wall of the silencing section 30 and then flows through the filter section 40 to the atmospheric connection port 101.

[0093] By setting the flow resistance of the silencing part 30 to be greater than that of the first one-way flow element 20 to the gas flow, relative to Figure 1 The illustrated embodiment eliminates the need for a second unidirectional flow element, thus simplifying the structural complexity of the filter silencing device. In one embodiment, the partition 80 is located within the second channel 401, and the edges of the partition 80 abut against the inner wall of the filter section 40. The first chamber 103 includes a cavity 405 located between the partition 80 and the housing on the side facing the atmospheric opening, and the cavity 405 is part of the second channel 401.

[0094] In one embodiment, the outer wall of the filter section 40 abuts against the inner wall of the housing 10, and the inner wall of the filter section 40 abuts against the first support frame 60.

[0095] In one embodiment, when the first one-way flow element 20 includes an elastic element 202 and a second blocking part 201, the elastic coefficient of the elastic element 202 and the porosity of the silencing part 30 are adjusted to ensure that the flow resistance of the silencing part 30 to the gas is greater than that of the first one-way flow element 20. With this configuration, when the air suspension is inflated, the gas flowing in from the atmospheric connection 101 preferentially passes through the first one-way flow element 20 and not through the silencing part 30, ensuring that almost all the gas entering the second chamber passes through the silencing part 30.

[0096] When inflating the air suspension, see [link / reference]. Figure 10 Gas enters the ventilation chamber 14 through the atmospheric connection 101. The gas entering the ventilation chamber 14 needs to pass through the filter 40 before entering the chamber 405. The gas entering the chamber 405 opens the ventilation port 105, allowing the gas to enter the first channel 301. The gas entering the first channel 301 flows into the air suspension through the air pump interface 102. When the air suspension deflates, see... Figure 11The air discharged from the air suspension enters the first channel 301 through the air pump interface 102. Since the first one-way flow element 20 is provided at the air vent 105, the air cannot pass through the air vent 105. Instead, the air passes through the silencer 30 and enters the filter 40. The air that enters the filter 40 enters the ventilation chamber 14. Finally, the air in the ventilation chamber 14 is discharged through the atmospheric connection port 101.

[0097] The second embodiment is described below: the first chamber 103 is connected to the air pump interface 102, and the second chamber 104 is connected to the atmospheric connection port 101. It should be noted that when describing the second embodiment, only the differences from the first embodiment are presented; the similarities with the first embodiment can be found in the relevant descriptions in the first embodiment and will not be repeated here.

[0098] In one embodiment, see Figure 3 When the first chamber 103 is connected to the air pump interface 102 and the second chamber 104 is connected to the atmospheric connection port 101, the filter section 40 is provided with a second channel 401. One end of the second channel 401 is connected to the vent 105, and the other end is connected to the air pump interface 102. Gas entering the second channel 401 through the air pump interface 102 enters the first channel 301 through the vent 105, then passes through the silencer section 30 and is discharged through the atmospheric connection port 101. During the deflation process of the air suspension, the sum of the flow resistance of the silencer section 30 and the first one-way flow element 20 to the gas is less than the flow resistance of the filter section 40 to the gas. This configuration prevents gas flowing in from the air pump interface 102 from bypassing the silencer section 30 and directly flowing through the filter section 40 before entering the second chamber 104 and being discharged. Gas flowing in from the air pump interface 102 must flow through the silencer section 30 and then to the atmospheric connection port 101.

[0099] During the inflation of the air suspension, the gas entering the first chamber 103 through the air pump interface 102 exerts a force on the elastic element 202 through the second sealing part 201. When the force exerted by the gas on the elastic element 202 is greater than the elastic force of the elastic element 202, the elastic element 202 is compressed, causing the second sealing part 201 to move away from the vent 105, opening the vent 105, and allowing the gas in the first chamber 103 to enter the first channel 301 through the vent 105; inflation stops. After the air suspension is inflated, the force exerted by the gas in the first chamber 103 on the elastic element 202 disappears, the elastic element extends, and drives the second sealing part 201 to move toward the vent 105, and the second sealing part 201 blocks the vent 105; during the deflation process of the air suspension, the force exerted by the gas on the second sealing part 201 is in the same direction as the elastic force exerted by the elastic element 202, and the second sealing part 201 blocks the vent 105 under the combined action of the force and the elastic force.

[0100] In one embodiment, the first chamber 103 further includes a first air passage 106 disposed between the inner wall of the housing 10 and the filter section 40, the first air passage 106 communicating with the atmospheric connection port 101. The second chamber 104 further includes a second air passage 110 disposed between the inner wall of the housing 10 and the silencer section, the first air passage 106 communicating with the second air passage 110. By providing the first air passage 106 and the second air passage 110, the gas entering through the atmospheric connection port 101 can be prevented from directly impacting the silencer section 30 and the filter section 40, thus extending the service life of the silencer section 30 and the filter section 40.

[0101] In one embodiment, the end of the silencing part 30 facing the first chamber 103 abuts against the partition 80, and the end of the silencing part 30 away from the first chamber 103 abuts against the inner wall of the housing 10. The atmospheric connection port 101 is located on the periphery of the end of the silencing part 30 away from the first chamber 103. The atmospheric connection port 101 communicates with the second air passage 110. With this configuration, during the venting process of the filter silencing device, after the gas passing through the first chamber 103 flows into the first channel 301 through the vent 105, the gas will not directly flow out through the atmospheric connection port 101. The gas must flow through the silencing part 30 before being discharged through the atmospheric connection port 101, which helps to ensure noise reduction during venting.

[0102] When inflating the air suspension, see [link / reference]. Figure 12 Gas enters the second air passage 110 of the second chamber 104 through the atmospheric connection 101, then enters the first air passage 106 of the first chamber 103, and after being filtered by the filter section 40, enters the second passage 401. Finally, the gas flows into the air suspension through the air pump interface 102. When the air suspension deflates, see... Figure 13 The air discharged from the air suspension enters the second channel 401 through the air pump interface 102. Since the flow resistance of the filter section 40 is greater than the sum of the flow resistance of the first one-way flow element 20 and the silencer section 30, the air in the second channel 401 will not pass through the filter section 40, but will enter the first channel 301 through the first one-way flow element 20, then flow through the silencer section 30 for noise reduction, and then flow to the second air passage 110 and be discharged through the atmospheric connection port 101.

[0103] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A filtering and noise reduction device, characterized in that, The filtration and noise reduction device includes: The housing (10) includes an atmospheric vent (101) and an air pump interface (102); the housing is provided with a first chamber (103), a second chamber (104) and a vent (105), the first chamber and the second chamber are connected through the vent; a first one-way flow element (20) is provided at the vent, and the gas in the first chamber can enter the second chamber through the first one-way flow element; A silencing section (30) is provided in the second chamber, and a first channel (301) is provided in the silencing section, one end of the first channel (301) being connected to the vent. The filter section (40) is at least partially disposed within the first chamber; The first chamber is connected to the atmospheric vent, and the first channel is connected to the air pump interface. Gas entering the first chamber through the atmospheric vent passes through the filter and flows to the first one-way flow element, then flows into the first channel through the first one-way flow element and exits through the air pump interface. Gas flowing into the first channel through the air pump interface exits through the side wall of the silencer and then flows through the first chamber before exiting. Alternatively... The first chamber is connected to the air pump interface, and the second chamber is connected to the atmospheric connection port. Gas entering the second chamber through the atmospheric connection port enters the first chamber, then flows through the filter section to the air pump interface and is discharged. Gas flowing into the first chamber through the air pump interface flows into the first channel through the first one-way flow element, then flows through the side wall of the silencer section to the atmospheric connection port and is discharged.

2. The filtration and noise reduction device according to claim 1, characterized in that, When the first chamber (103) is connected to the atmospheric connection port (101) and the first channel (301) is connected to the air pump interface (102), the filter part (40) is provided with a second channel (401), the second channel (401) is connected to the air vent (105), and the end of the second channel (401) facing the atmospheric connection port (101) is blocked.

3. The filtration and noise reduction device according to claim 2, characterized in that, The filter section (40) is partially located in the first chamber (103) and partially located in the second chamber (104). The silencer section (30) is located in the second channel (401). The flow resistance of the silencer section (30) to the gas is greater than the flow resistance of the first one-way flow element (20) to the gas. The gas flowing into the first channel (301) through the air pump interface (102) flows into the filter section (40) through the side wall of the silencer section (30) and flows to the atmospheric connection port (101) through the filter section (40).

4. The filtration and noise reduction device according to claim 1, characterized in that, When the first chamber (103) is connected to the atmospheric connection port (101) and the first channel (301) is connected to the air pump interface (102), the first chamber (103) further includes a first air passage (106) disposed between the inner wall of the housing (10) and the filter part (40). The first air passage (106) is connected to the atmospheric connection port (101). The housing (10) is also provided with a through hole (107) located between the first air passage (106) and the second chamber (104). The filter silencing device further includes a second one-way flow element (50) disposed at the through hole (107). The gas flowing out through the side wall of the silencing part (30) enters the first air passage (106) through the second one-way flow element (50) and flows out through the atmospheric connection port (101).

5. The filtration and noise reduction device according to claim 4, characterized in that, The second one-way flow element (50) includes a boss (501) extending from the inner wall of the housing (10) and a first sealing part (502). The first sealing part (502) is located on the side of the boss (501) facing the first air passage (106), and the end of the first sealing part (502) away from the boss (501) is fixedly disposed, and the end facing the inner wall of the housing (10) abuts against the boss (501) to block the through hole (107). The gas in the second chamber (104) flows through the through hole (107), causing the end of the first sealing part (502) facing the inner wall of the housing (10) to separate from the boss (501), and the gas flows into the first air passage (106) through the gap between the first sealing part (502) and the boss (501).

6. The filtration and noise reduction device according to claim 1, characterized in that, When the first chamber (103) is connected to the air pump interface (102) and the second chamber (104) is connected to the atmospheric connection port (101), the filter section (40) is provided with a second channel (401). One end of the second channel (401) is connected to the air vent (105), and the other end is connected to the air pump interface (102). The gas that enters the second channel (401) through the air pump interface (102) enters the first channel (301) through the air vent (105), and then passes through the silencer section (30) and is discharged through the atmospheric connection port (101).

7. The filtration and noise reduction device according to claim 6, characterized in that, The first chamber (103) further includes a first air passage (106) disposed between the inner wall of the housing (10) and the filter (40), and the second chamber (104) further includes a second air passage (110) disposed between the inner wall of the housing (10) and the silencer. The first air passage (106) and the second air passage (110) are connected. Gas entering the second air passage (110) through the atmospheric connection port (101) enters the first air passage (106), then passes through the filter (40) and is discharged through the air pump interface (102). Gas flowing in through the air pump interface (102) enters the first channel (301) through the first one-way flow element (20), then enters the second air passage (110) through the silencer (30) and is discharged through the atmospheric connection port (101).

8. The filtration and silencing device according to claim 1, characterized in that, The first unidirectional flow element (20) includes a second blocking part (201) and an elastic element (202). The elastic element (202) is fixed at one end away from the first chamber (103). The second blocking part (201) is disposed at one end of the elastic element (202) facing the first chamber (103). The second blocking part (201) blocks the vent (105). The gas in the first chamber (103) pushes the second blocking part (201) to compress the elastic element (202), and the vent (105) opens. The gas enters the first channel (301) through the vent (105). The elastic element (202) expands, and the second blocking part (201) blocks the vent (105).

9. The filtration and noise reduction device according to claim 1, characterized in that, The filtration and silencing device further includes a first support frame (60) and a second support frame (70) located in the second chamber (104). Both the first support frame (60) and the second support frame (70) are hollow structures. The side wall of the first support frame (60) is provided with a first vent hole (601), and the side wall of the second support frame (70) is provided with a second vent hole (701). The first support frame (60) is sleeved on the outside of the second support frame (70), and the second support frame (70) is arranged in the first channel (301). The silencing part (30) is sandwiched between the first support frame (60) and the second support frame (70).

10. The filtration and silencing device according to claim 1, characterized in that, The filtration and noise reduction device further includes a partition (80), which is at least partially located between the first chamber (103) and the second chamber (104), and the partition (80) provides the vent (105). When the first chamber (103) is connected to the atmospheric connection port (101) and the first channel (301) is connected to the air pump interface (102), the end of the silencing part (30) facing the first chamber (103) abuts against the partition plate (80), and the end of the silencing part (30) facing the air pump interface (102) abuts against the inner wall of the housing (10); When the first chamber (103) is connected to the air pump interface (102) and the second chamber (104) is connected to the atmospheric connection port (101), the end of the silencing part (30) facing the first chamber (103) abuts against the partition plate (80), and the end of the silencing part (30) away from the first chamber (103) abuts against the inner wall of the housing (10). The atmospheric connection port (101) is located on the periphery of the end of the silencing part (30) away from the first chamber (103).

11. An air suspension system, characterized in that, The air suspension system includes air suspension and a filtering and noise reduction device as described in any one of claims 1 to 10.

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