CN216342694U - Filtering silencer and air suspension system - Google Patents

Abstract

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

Description

Filtering silencer and air suspension system

Technical Field

The application relates to the technical field of automobiles, in particular to a filtering and silencing device and an air suspension system.

Background

The automobile provided with the air suspension can judge the height change of the automobile according to the signal of the distance sensor, and the chassis of the automobile is reduced or raised by controlling the air suspension through the air suspension, so that the stability of the automobile body is improved, the automobile can adapt to complex road conditions, and the driving comfort of the automobile is improved.

The air suspension is inflated and deflated to adjust the height of the chassis of the automobile, and noise is generated in the process of deflation of the air suspension, so that the use experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a filter silencing device and air suspension system.

A first aspect of embodiments of the present application provides a filter silencer assembly for an air suspension, the filter silencer assembly comprising:

a housing including an atmosphere communication port and an air pump interface; a first chamber, a second chamber and an air vent are arranged in the shell, and the first chamber is communicated with the second chamber through the air vent; a first one-way flow element disposed at the vent, gas within the first chamber being accessible to the second chamber through the first one-way flow element;

the silencing part is arranged in the second chamber, a first channel is arranged in the silencing part, and one end of the first channel is communicated with the vent;

a filter portion at least partially disposed within the first chamber;

the first chamber is communicated with the atmosphere communication port, and the first channel is communicated with the air pump interface; the air entering the first chamber from the atmosphere communication port flows to the first one-way circulation element after passing through the filter part, flows into the first channel through the first one-way circulation element, and is discharged through the air pump interface; the air flowing into the first channel through the air pump interface flows out through the side wall of the silencing part and then flows through the first chamber to be discharged; or,

the first chamber is communicated with the air pump interface, and the second chamber is communicated with the atmosphere communication port; the air entering the second chamber from the atmosphere communication port enters the first chamber, then flows to the air pump interface through the filter part and is discharged; the gas flowing into the first chamber through the air pump port flows into the first passage through the first one-way flow-through element, then flows to the atmosphere communication port through the muffler side wall, and is discharged.

Optionally, the first chamber is communicated with the atmosphere communication port, when the first passage is communicated with the air pump interface, a second passage is arranged in the filtering portion, the second passage is communicated with the vent, and one end of the second passage facing the atmosphere communication port is blocked.

Optionally, the filter part is partially located in the first chamber, partially located in the second chamber, and located in the second channel, and the silencing part has a flow resistance to gas greater than that of the first one-way flow element; the gas flowing into the first passage through the air pump port flows into the filter unit through the muffler unit side wall and flows to the atmosphere communication port through the filter unit.

Optionally, the first chamber is communicated with the atmosphere communication port, when the first passage is communicated with the air pump interface, the first chamber further includes a first air passage disposed between an inner wall of the housing and the filter portion, the first air passage is communicated with the atmosphere communication port, a through hole disposed between the first air passage and the second chamber is further disposed in the housing, and the filtering and silencing device further includes a second one-way circulation element; the second one-way flow element is arranged at the through hole; the gas flowing out through the side wall of the silencing part enters the first air passage through the second one-way circulation element and flows out through the atmosphere communication port.

Optionally, the second one-way flow element includes a boss and a first blocking portion, the boss extends from the inner wall of the housing to form the first blocking portion, the first blocking portion is located on one side of the boss facing the first air passage, an end portion of the first blocking portion, which is far away from the boss, is fixedly disposed, and an end portion facing the inner wall of the housing abuts against the boss to block the through hole; and the gas in the second chamber flows through the through hole, so that the end part of the first blocking part facing the inner wall of the shell is separated from the boss, and the gas flows into the first air passage through the gap between the first blocking part and the boss.

Optionally, when the first chamber is communicated with the air pump interface, and the second chamber is communicated with the atmosphere communication port, the filter part is provided with a second channel, one end of the second channel is communicated with the vent, and the other end of the second channel is communicated with the air pump interface; and the air entering the second channel through the air pump interface enters the first channel through the vent, passes through the silencing part and is discharged through the atmosphere communication port.

Optionally, the first chamber further includes a first air passage disposed between the inner wall of the housing and the filtering portion, the second chamber further includes a second air passage disposed between the inner wall of the housing and the silencing portion, and the first air passage is communicated with the second air passage; the air entering the second air passage through the atmosphere communication port enters the first air passage, then passes through the filtering part and is discharged through the air pump interface; the air flowing in through the air pump interface enters the first channel through the first one-way flow element, then enters the second air channel through the silencing part and is discharged through the atmosphere communication port.

Optionally, the first one-way flow element includes a second blocking portion and an elastic member, one end of the elastic member facing away from the first chamber is fixed, the second blocking portion is disposed at one end of the elastic member facing the first chamber, and the second blocking portion blocks the vent; the gas in the first chamber pushes the second blocking part to compress the elastic piece, the vent hole is opened, and the gas enters the first channel through the vent hole; the elastic piece stretches, and the second plugging portion plugs the air vent.

Optionally, the filtering and silencing device further comprises a first support frame and a second support frame which are positioned in the second chamber, the first support frame and the second support frame are both of a hollow structure, a first air hole is formed in the side wall of the first support frame, and a second air hole is formed in the side wall of the second support frame; the first support frame is sleeved outside the second support frame, the second support frame is arranged in the first channel, and the silencing part is clamped between the first support frame and the second support frame.

Optionally, the filtering and silencing device further includes a partition plate, the partition plate is at least partially located between the first chamber and the second chamber, and the partition plate is provided with the vent; the first chamber is communicated with the atmosphere communication port, when the first passage is communicated with the air pump interface, one end of the silencing part facing the first chamber is abutted against the partition plate, and one end of the silencing part facing the air pump interface is abutted against the inner wall of the shell; the first chamber with the air pump interface intercommunication, the second chamber with during atmosphere intercommunication mouth intercommunication, the amortization portion orientation the one end of first chamber with the baffle offsets, the amortization portion deviates from the one end of first chamber with the inner wall of casing offsets, just atmosphere intercommunication mouth sets up the amortization portion deviates from week side of the tip of first chamber.

A second aspect of embodiments of the present application provides an air suspension system including an air suspension and the above-described filter silencer device.

The utility model provides a filter silencing device and air suspension system, the casing, first one-way circulation component, noise damping portion and the filter house that filter silencing device includes all set up in the casing, and filter silencing device's compact structure helps reducing its shared space.

Under the condition that the first chamber is communicated with the atmosphere communication port and the first channel is communicated with the air pump interface, when the air suspension is inflated, air enters the first chamber through the atmosphere communication port, the air entering the first chamber is filtered by the filtering portion, flows into the first channel of the silencing portion through the first one-way circulation element at the air vent and then enters the air pump through the air pump interface; the filter part can filter impurities in the air, so that the noise reduction part is prevented from being blocked by dust in the air, and other parts in the air suspension system are prevented from being damaged; because the silencing part is provided with the first channel which is communicated with the vent hole, gas flowing through the vent hole during inflation can directly enter the first channel and cannot flow through the silencing part, namely, the gas cannot pass through the silencing part during inflation of the air suspension, and the service life of the silencing part is prolonged. When the air suspension is deflated, air entering the shell through the air pump interface enters the first channel in the silencing part, and due to the characteristic of one-way conduction of the first one-way circulation element, air cannot enter the first cavity from the air vent, and then the air flows out through the side wall of the silencing part, flows to the atmosphere communication port through the first cavity and is discharged out of the shell; when the air flows through the silencing part, the noise of the air is reduced, so that the noise in the working process of the air suspension can be reduced.

Under the condition that the first chamber is communicated with the air pump interface and the second chamber is communicated with the atmosphere communication port, when the air suspension is inflated, air enters the second chamber through the atmosphere communication port, and then enters the first chamber, is filtered by the filter part and then enters the air pump through the air pump interface; due to the characteristic of one-way conduction of the first one-way circulation element, gas entering the second chamber cannot enter the first chamber through the vent during inflation, and the gas in the second chamber must flow through the filter part arranged in the first chamber and then enters the air pump through the air pump interface, so that dust in the gas is prevented from entering the air pump. When air suspension is lost heart, it is gaseous through the first cavity of air pump interface entering, later gaseous through the blow vent get into the first passageway in the noise elimination portion, discharge through atmosphere intercommunication mouth behind the noise elimination portion again, so set up, the noise size that the noise elimination portion 30 of gas flow through can reduce gaseous production helps promoting user's use and experiences.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural diagram of a filtering silencer according to an exemplary embodiment of the present application.

Fig. 2 is a schematic structural diagram of a filtering silencer according to another exemplary embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a filtering silencer according to still another exemplary embodiment of the present disclosure.

Fig. 4 is a schematic perspective view of a first support frame and a partition plate of a filtering silencer according to an embodiment of the present disclosure.

Fig. 5 is a cross-sectional view of a first support frame and a partition plate of a filtering noise silencer according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a second supporting frame of the filtering silencer device according to an embodiment of the present disclosure.

Fig. 7 is a schematic structural diagram of a filtering portion of a filtering and silencing device according to an embodiment of the present application.

Fig. 8 is a schematic view illustrating a gas flow direction of a filtering silencer device according to an exemplary embodiment of the present application when an air suspension is inflated.

FIG. 9 is a schematic view of the flow direction of air in an air suspension deflated filter silencer assembly according to an exemplary embodiment of the present application.

FIG. 10 is a schematic view of the flow direction of air in an air suspension inflated by a filtering silencer assembly according to another exemplary embodiment of the present disclosure.

FIG. 11 is a schematic view of the flow of air in a filtering silencer assembly according to another exemplary embodiment of the present application when an air suspension is deflated.

FIG. 12 is a schematic view of the flow of air in a filtering silencer assembly according to yet another exemplary embodiment of the present application during inflation of an air suspension.

FIG. 13 is a schematic view of the flow of air in a filtering silencer assembly according to still another exemplary embodiment of the present application when an air suspension is deflated.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

The filter silencer and the air suspension according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

An embodiment of the present application provides an air suspension system that includes a filter silencer device and an air suspension. The filtering and silencing device comprises an atmosphere communicating port and an air pump interface, and the air pump interface is communicated with an air inlet of the air suspension.

In one embodiment, the air suspension system further comprises an air pump, a distribution valve and an air storage tank, the atmosphere communication port of the filtering and silencing device is communicated with the atmosphere, the air pump interface is connected with the air pump, air enters the air pump after passing through the filtering and silencing device and then enters the distribution valve through the air pump, and the air is distributed into the air suspension and the air storage tank through the distribution valve.

As shown in fig. 1, 2 and 3, a filtering and silencing device 100 of an air suspension system according to an embodiment of the present invention includes a housing 10, a first one-way flow element 20, a silencing part 30 and a filtering part 40.

The housing 10 comprises an atmosphere communication port 101 and an air pump interface 102; a first chamber 103, a second chamber 104 and an air vent 105 are arranged in the housing 10, and the first chamber 103 and the second chamber 104 are communicated through the air vent 105.

The first one-way flow element 20 is arranged at the vent 105, and gas in the first chamber 103 may enter the second chamber 104 through the first one-way flow element 20.

The sound-deadening portion 30 is disposed in the second chamber 104, a first passage 301 is provided in the sound-deadening portion 30, and one end of the first passage 301 communicates with the air vent 105.

The filter portion 40 is at least partially disposed within the first chamber 103.

The first chamber 103 is communicated with the atmosphere communication port 101, and the first passage 301 is communicated with the air pump interface 102; the gas entering the first chamber 103 from the atmosphere communication port 101 passes through the filter unit 40, flows to the first one-way flow element 20, flows into the first channel 301 through the first one-way flow element 20, and is discharged through the air pump interface 102; the air flowing into the first channel 301 through the air pump port 102 flows out through the side wall of the sound-deadening portion 30, and then flows through the first chamber 103 to be discharged. Alternatively, the first chamber 103 is communicated with the air pump interface 102, and the second chamber 104 is communicated with the atmosphere communication port 101; the gas entering the second chamber 104 through the atmospheric communication port 101 enters the first chamber 103, passes through the filter unit 40, flows to the air pump port 102, and is discharged; the gas flowing into the first chamber 103 through the air pump port 102 flows into the first passage 301 through the first one-way flow element 20, then flows to the atmosphere communication port 101 through the sound deadening portion 30 side wall, and is discharged.

The housing 10, the first one-way flow element 20, the silencing part 30 and the filtering part 40 that the filtering and silencing device 100 provided by the embodiment of the application comprise are all arranged in the housing, and the filtering and silencing device is compact in structure and beneficial to reducing the occupied space.

In the case that the first chamber 103 is communicated with the atmosphere communication port 101, and the first channel 301 is communicated with the air pump port 102, when the air suspension is inflated, the air enters the first chamber 103 through the atmosphere communication port 101, and after the air entering the first chamber 103 is filtered by the filter portion 40, the air flows into the first channel 301 of the sound attenuation portion 30 through the first one-way flow element 20 at the vent 105, and then enters the air pump through the air pump port 102; the filtering part 40 can filter impurities in the air, prevent dust in the air from blocking the silencing part 30 and prevent the dust from damaging other parts in the air suspension system; since the silencing part 30 is provided with the first channel 301, the first channel 301 is communicated with the vent 105, when the air suspension is inflated, the gas flowing through the vent 105 can directly enter the first channel 301 and can not flow through the silencing part 30, namely, the gas can not pass through the silencing part 30 during the inflation of the air suspension, and the service life of the silencing part 30 can be prolonged. When the air suspension is deflated, the air entering the housing 10 through the air pump interface 102 enters the first channel 301 in the sound-deadening portion 30, and due to the characteristic of one-way conduction of the first one-way flow-through element 20, the air flow cannot enter the first chamber 103 from the air vent 105, so that the air flows out through the side wall of the sound-deadening portion 30, flows to the atmosphere communication port 101 through the first chamber 103, and is discharged out of the housing 10; when the air flows through the silencer 30, the noise of the air is reduced, so that the noise during the operation of the air suspension can be reduced.

Under the condition that the first chamber 103 is communicated with the air pump interface 102 and the second chamber 104 is communicated with the atmosphere communication port 101, when the air suspension is inflated, air enters the second chamber 104 through the atmosphere communication port 101, and then enters the first chamber 103, is filtered by the filter part 40 and then enters the air pump through the air pump interface 102; due to the characteristic of unidirectional conduction of the first unidirectional flow element 20, the gas entering the second chamber 104 cannot enter the first chamber 103 through the vent 105 during inflation, and the gas in the second chamber 104 must flow through the filter part 40 arranged in the first chamber 103 and then enter the air pump through the air pump interface 102, so that dust in the gas is prevented from entering the air pump; when air suspension is deflated, air enters the first cavity 103 through the air pump interface 102, then the air enters the first channel 301 in the silencing part 30 through the vent 105, and is discharged through the atmosphere communication port 101 after passing through the silencing part 30, so that the noise generated by the air can be reduced through the silencing part 30, and the use experience of a user is promoted.

In one embodiment, the housing 10 may include a first housing 108 and a second housing 109, the first housing and the second housing being connected. In the assembling process of the filtering silencer device 100, the silencing part 30 may be disposed in the second housing 109, the filtering part 40 may be disposed in the first housing 108, and the first housing 108 and the second housing 109 may be connected to complete the assembling of the filtering silencer device 100, and the housing 10 may be disposed as the first housing 108 and the second housing 109, which may facilitate the assembling of the filtering silencer device 100. In some embodiments, the first housing 108 and the second housing 109 may be connected by a welding process, or may be detachably connected.

In one embodiment, the material of the housing 10 may be engineering plastic, for example, the material of the housing 10 may be a mixture of PA6(Polyamide-6, nylon plastic Polyamide 6) and GF (Glass Fiber), wherein the mass fraction of the Glass Fiber may be 30%. The shell 10 made of the material has better rigidity and strength, and has smaller density, which is beneficial to reducing the weight of the shell 10. In other embodiments, the material of the housing 10 may be other materials such as steel.

In one embodiment, the housing 10 includes a main body 11 and an air pump connector 13 formed by extending the main body 11, the air pump connector 13 is provided with the air pump interface 102, the sound attenuating portion, the filtering portion and the first one-way flow element are disposed in the main body 11, and a maximum outer diameter of the air pump connector 13 may range from 8mm to 12 mm. For example, the maximum outer diameter of the air pump connector 13 may be 8mm, 9mm, 10mm, 11mm, 12mm, or the like. The air pump connector 13 is provided to facilitate connection of the filtering noise silencer 100 to other components.

In one embodiment, the maximum outer diameter of the main body portion 11 of the housing 10 in the gas flow direction has a size ranging from 35mm to 45 mm. For example, the maximum outer diameter of the housing 10 in the gas flow direction may be 35mm, 38mm, 40mm, 43mm, 45mm, or the like. The space occupied by the filtering and silencing device 100 is small, and the space in the automobile can be saved.

In one embodiment, the wall thickness of the housing 10 may range in size from 2mm to 3mm, for example, the wall thickness of the housing 10 may be 2mm, 2.5mm, 3mm, etc. So configured, the housing 10 can ensure rigidity without occupying too much internal space.

In one embodiment, the atmosphere communication port 101 of the housing 10 is disposed opposite to the air pump port 102. With such an arrangement, the arrangement of the first one-way flow element 20, the silencing part 30 and the filtering part 40 in the main body part 11 can be facilitated, and the gas can flow more smoothly.

In one embodiment, the first one-way flow element 20 comprises a second blocking portion 201 and an elastic member 202, an end of the elastic member 202 facing away from the first chamber 103 is fixed, the second blocking portion 201 is arranged at an end of the elastic member 202 facing the first chamber 103, and the second blocking portion 201 blocks the vent 105. The gas in the first chamber 103 pushes the second blocking portion 201, so that the elastic member 202 is compressed, the vent 105 is opened, and the gas enters the first channel 301 through the vent 105; the elastic member 202 is stretched, and the second closing portion 201 closes the vent 105. In some embodiments, the resilient member 202 may be a spring.

Further, the first one-way flow element 20 further includes a guide rod 203 formed by extending the second blocking portion 201 in a direction away from the vent 105, and the guide rod 203 penetrates the elastic member 202 and is movable in a longitudinal direction thereof relative to the elastic member 202.

In one embodiment, referring to fig. 1, 2 and 3, the filtering noise silencer further includes a baffle 80, the baffle 80 being at least partially located between the first chamber 103 and the second chamber 104. The partition 80 partitions the space in the housing 10 into a first chamber 103 and a second chamber 104, and the partition 80 opens the vent 105. The gas of the first chamber 103 and the second chamber 104 can be separated by providing the partition 80.

During the inflation of the air suspension, the second blocking portion 201 moves in a direction away from the partition plate 80; after the air suspension stops being inflated, the second blocking portion 201 abuts against the partition 80.

In one embodiment, referring to fig. 4 and 5, the partition 80 includes a body 802 and an extension 801 extending from the body 802 toward the first chamber 103, wherein the vent 105 penetrates the extension 801. The side of the body 802 facing the second chamber is provided with a groove 803. When the second blocking portion 201 blocks the vent, the second blocking portion 201 is accommodated in the groove 803.

In one embodiment, referring again to fig. 1, 2 and 3, the sound-deadening portion 30 has an annular structure, and the inner space of the annular structure is the first passage 301 of the sound-deadening portion 30.

In one embodiment, the sound-deadening portion 30 has a porous structure. The flow rate of the gas introduced into the housing 10 through the air pump port 102 is reduced when passing through the hole of the sound-deadening portion 30, which contributes to reducing the noise of the gas; when the noise is propagated through the holes of the silencing part 30, the sound wave of the noise is refracted and reflected in the porous structure of the silencing part 30, and the sound energy of the gas is converted into heat energy, so that the energy of the noise is continuously reduced, and the noise reduction effect is realized. The porosity of the sound-deadening portion 30 may be set according to the noise reduction requirement, and for example, the porosity of the sound-deadening portion 30 may be 70% or more.

In one embodiment, the material of the silencer 30 may be a PE (Polyethylene) material. When the material of the noise reduction part 30 is polyethylene, the aperture of the noise reduction part is small, the noise energy reduction effect is good, and a better noise reduction effect can be realized. The porosity of the muffling portion affects the noise reduction effect, and can be determined according to the requirement of the noise reduction effect.

In one embodiment, referring to fig. 1, 2, and 3, the filter muffler assembly 100 further includes a first support bracket 60 and a second support bracket 70 positioned within the second chamber 104. Referring to fig. 4, 5 and 6, the first support frame 60 and the second support frame 70 are both hollow structures, a first vent 601 is disposed on a side wall of the first support frame 60, and a second vent 701 is disposed on a side wall of the second support frame 70. The first support frame 60 is sleeved outside the second support frame 70, the second support frame 70 is arranged in the first channel 301, and the sound attenuation part 30 is clamped between the first support frame 60 and the second support frame 70. The outer wall of the sound-deadening portion 30 abuts against the first support bracket 60, and the inner wall abuts against the second support bracket 70. The air entering the housing through the air pump interface 102 can sequentially pass through the second air vent 701, the silencer 30 and the first air vent 601, and is finally discharged through the atmosphere communication port 101. With this arrangement, the filtering muffler device 100 can fixedly support the muffler portion 30 while achieving gas passage, thereby preventing the muffler portion 30 from being displaced by gas impact.

In one embodiment, referring to fig. 6, a support 702 is disposed in the second support frame 70, and the support is provided with a through hole 703. The end of the resilient member 202 facing away from the first chamber is fixed outside the support 702. The guide rod 203 passes through the through hole 703 and can slide in the through hole 703.

In one embodiment, the material of the first support frame 60, the second support frame 70 and the second plugging portion 201 may be a mixed material of PA6(Polyamide-6, nylon plastic Polyamide 6) and GF (Glass Fiber), wherein the mass fraction of the Glass Fiber may be 30%. The first support frame 60, the second support frame 70 and the second plugging portion 201 are made of the mixed material, so that the strength and the rigidity are better, and the weight of the first support frame, the second support frame and the second plugging portion can be reduced. In some embodiments, other hard materials may be used for the first support bracket 60, the second support bracket 70 and the second blocking portion 201.

The filtering noise reduction device 100 provided by the embodiment of the application comprises two implementation modes. In the first embodiment, as shown in fig. 1 and 2, the first chamber 103 is communicated with the atmosphere communication port 101, and the first passage 301 is communicated with the air pump port 102; in the second embodiment, as shown in fig. 3, the first chamber 103 is communicated with the air pump port 102, and the second chamber 104 is communicated with the atmosphere communication port 101.

The first embodiment is first described below: the first chamber 103 communicates with the atmosphere communication port 101, and the first passage 301 communicates with the air pump port 102.

In one embodiment, referring to fig. 1 and 2, a second channel 401 is provided in the filter unit 40, the second channel 401 communicates with the vent 105, and one end of the second channel 401 facing the atmosphere communication port 101 is closed. The end of the second channel 401 facing the atmosphere communication port 101 is blocked, so that the gas flowing from the atmosphere communication port cannot directly enter the filter part 40 through the end of the second channel 401 facing the atmosphere communication port 101, and the gas needs to flow into the second channel 401 through the side wall of the filter part 40, thereby ensuring the cleanness of the gas flowing into the second chamber 104.

In one embodiment, the first chamber 103 further comprises a venting chamber 14 between the filter portion 40 and the atmospheric communication port 101, the venting chamber 14 being in communication with the atmospheric communication port 101. By providing the vent lumen 14, inflation of the air suspension during inflation and evacuation of air during deflation is facilitated.

In the embodiment shown in fig. 1 and 2, in the process of inflating the air suspension, after the gas entering the first chamber 103 through the atmosphere communication port 101 passes through the filter part 40, the second blocking part 201 applies an acting force to the elastic member 202, when the acting force of the gas on the elastic member 202 is greater than the elastic force of the elastic member 202, the elastic member 202 is compressed, the second blocking part 201 is driven to move in the direction away from the vent 105, the vent 105 is opened, and the gas in the first chamber 103 can enter the first channel 301 through the vent 105; after the air suspension stops being inflated, the acting force of the gas in the first chamber 103 on the elastic piece 202 disappears, the elastic piece stretches, the second blocking part 201 is driven to move towards the air vent 105, and the second blocking part 201 blocks the air vent 105; in the process of air leakage of the air suspension, the acting force of the gas received by the second blocking part 201 is the same as the direction of the elastic force received by the elastic member 202, and the second blocking part 201 blocks the air vent 105 under the combined action of the acting force and the elastic force.

In one embodiment, referring to fig. 1, an end of the sound-deadening portion 30 facing the first chamber 103 abuts against the partition 80, an end of the sound-deadening portion 30 facing the air pump port 102 abuts against an inner wall of the housing 10, a port of the sound-deadening portion 30 facing the first chamber 103 surrounds the air vent 105, and a port of the sound-deadening portion 30 facing the air pump port 102 surrounds the air pump port 102. So set up, at the filtration silencing device inflation in-process, almost all enter into first passageway 301 when the gas in first chamber 103 flows into second chamber 104 through blow vent 105, and rethread air pump interface 102 flows out, and the lateral wall of noise damping portion 30 is not flowed through to gas, can increase noise damping portion 30's life, is favorable to guaranteeing the unobstructed nature of inflation in-process simultaneously.

Further, the sound-deadening portion 30 includes a first sealing gasket 90 and a second sealing gasket 91, the first sealing gasket 90 is disposed at an end of the sound-deadening portion 30 facing the partition plate 80, and the first sealing gasket 90 abuts against the partition plate 80; the second seal 91 is provided at an end of the sound-deadening portion 30 facing the air pump port 102, and the second seal 91 abuts against the inner wall of the housing. The material of the first sealing gasket 90 and the second sealing gasket 91 may be a rubber material or PU (Polyurethane). Through the arrangement of the first sealing gasket 90 and the second sealing gasket 91, the gas entering from the air pump interface 102 can be prevented from flowing out from the gap between the sound-deadening portion 30 and the partition 80 and the gap between the sound-deadening portion 30 and the inner wall of the housing 10, which is beneficial to achieving better noise reduction effect.

In one embodiment, referring to fig. 7, the filter portion 40 includes a casing 402 and a filter element 403, the casing 402 is disposed at least at one end of the filter element 403 facing the atmosphere communication port, and the casing 402 blocks one end of the second passage 401 facing the atmosphere communication port 101.

In some embodiments, the casing 402 is further disposed at an end of the filter element 403 facing the air pump connector 102, an opening 404 is disposed at an end of the casing 402 facing the air pump connector 102, and the second passage 401 is communicated with the air pump connector 102 through the opening 404. With this arrangement, the housing can prevent the filter element 403 from being deformed by the impact of gas, and the filter part 40 is compact, thereby facilitating the installation of the filter silencer 100.

In one embodiment, the material of the filter element 403 is filter paper or non-woven fabric. In other embodiments, the material of the filter portion 40 may be other materials having a filtering function. The filter part 40 is made by folding filter paper or non-woven fabric, and can filter dust in the gas, and the filtering efficiency of the filter part 40 is greater than or equal to 98% during the service life of the filtering and silencing device 100. In one embodiment, referring to fig. 1, the first chamber 103 further includes a first air passage 106 disposed between the inner wall of the housing 10 and the filter portion 40, the first air passage 106 is communicated with the atmosphere communication port 101, and a through hole 107 is disposed in the housing 10 between the first air passage 106 and the second chamber 104. The first air passage 106 communicates with the atmosphere communication port 101 through the vent chamber 14. The filtering noise-damping device 100 further includes a second one-way flow-through element 50, the second one-way flow-through element 50 being disposed at the through hole 107; the gas flowing out through the side wall of the sound deadening portion 30 enters the first air passage 106 through the second one-way flow element 50 and flows out through the atmospheric communication port 101. Through setting up first air flue 106 and the one-way circulation component 50 of second, gaseous not passing through filter house 40 when disappointing, but directly flow to atmosphere intercommunication mouth 101 through first air flue 106, reduce the high-pressure gas that the second chamber flows out to filter house 40's impact, avoid filter house 40 damaged deformation under high-pressure gas's effect, be favorable to prolonging filter house 40's life.

In one embodiment, referring to fig. 8 and 9, the second chamber 104 includes an air reservoir 302 between the first support bracket 60 and the inner wall of the housing, and the air flowing out through the sound-deadening portion 30 first enters the air reservoir 302, and then enters the first air passage 106 through the second one-way flow-through member 50.

When the air suspension is inflated, the air pump works to enable air in the atmosphere to enter the shell; referring to fig. 8, the gas enters the ventilation chamber 14 through the atmosphere communication port 101, and then enters the first gas passage 106 from the ventilation chamber 14; since the second one-way flow element 50 is disposed at the through hole 107 between the first air passage 106 and the second chamber 104, so that air cannot flow into the second chamber 104 from the through hole 107, the air passes through the filter portion 40 and enters the second passage 401 of the filter portion 40, the air entering the second passage 401 opens the air vent 105, and flows into the first passage 301 through the air vent 105, and then flows to the air suspension through the air pump interface 102.

When the air suspension is deflated, referring to fig. 9, the air exhausted from the air suspension enters the first channel 301 through the air pump interface 102, then flows through the side wall of the silencing part 30 into the air storage cavity 302, the air entering the air storage cavity 302 opens the through hole 107, flows into the first air passage 106 from the through hole 107, then flows to the atmosphere communication port 101 through the air vent cavity 14, and finally flows out of the housing through the atmosphere communication port 101.

Further, referring to fig. 1, the second one-way flow element 50 includes a boss 501 formed by extending an inner wall of the housing 10, and a first blocking portion 502, the first blocking portion 502 is located on a side of the boss 501 facing the first air duct 106, an end portion of the first blocking portion 502 far away from the boss 501 is fixedly disposed, and an end portion 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, so that the end of the first blocking portion 502 facing the inner wall of the housing 10 is separated from the boss 501, and the gas flows into the first gas passage 106 through the gap between the first blocking portion 502 and the boss 501. With this arrangement, the second one-way flow element 50 has a simple structure, does not occupy too much space inside the housing 10, and is convenient to install.

Referring to fig. 9, when the air suspension is deflated, the air flowing into the housing 10 from the air pump interface 102 flows to the through hole 107 through the sound-deadening portion 30, and the air exerts a force on the first blocking portion 502, so that the first blocking portion moves toward the end of the inner wall of the housing 10 in the direction away from the boss 501, a gap is formed between the first blocking portion 502 and the boss 501, and the air flows into the first air passage 106 through the gap. After the air suspension is deflated, the first blocking portion 502 does not receive the acting force of the air any more, and the first blocking portion 502 recovers to deform and abuts against the boss 501. Referring to fig. 7, when the air suspension is inflated, the end of the first blocking portion 502 facing the inner wall of the housing 10 abuts against the boss 501 to block the through hole 107, so that gas cannot enter the second chamber 104 through the through hole 107.

In one embodiment, the boss 501 is annular and is disposed around the body 802 of the baffle 80, and the through-hole 107 is located between the baffle 80 and the boss 501.

In one embodiment, as shown in fig. 1, the filter portion 40 is located in the first chamber 103, one end of the filter portion 40 facing the atmosphere communication port 101 abuts against the inner wall of the housing, one end facing the second chamber 104 abuts against the partition 80, the second channel 401 communicates with the vent 105 through the opening 404, and the area of the opening 404 is larger than that of the vent 105.

Further, the extending portion 801 of the partition 80 is clamped in the second channel 401, and the extending portion 801 may be in a truncated cone shape, that is, a cross-sectional area of an end surface of the extending portion 801 facing away from the second chamber 104 is smaller than a cross-sectional area of a connection portion of the extending portion 801 and the body 802. So set up, extension 801 can be chucking in second passageway 401, guarantees that the gas that gets into second passageway 401 through filter house 40 gets into second chamber 104 through the vent 105 in extension 801, is favorable to improving the steadiness of filter house installation simultaneously.

In one embodiment, the material of the first blocking portion 502 may be a material with elasticity, for example, PU (Polyurethane) material, and in other embodiments, the material of the first blocking portion 502 may also be other elastic materials such as rubber. Polyurethane material has characteristics such as wear-resisting, high strength, high resilience, and first shutoff portion 502 adopts polyurethane material to help improving the leakproofness of the one-way circulation component 50 of second when aerifing air suspension, and makes first shutoff portion 502 easily take place deformation when air suspension is lost heart, and the gas of being convenient for passes through, improves the one-way circulation component 50's of second life.

Further, the first blocking portion 502 may be fixedly disposed on the partition 80 through a vulcanization encapsulation process. Through the vulcanization encapsulation mode, the first blocking part 502 can be tightly adhered to the separator 80, and the first blocking part 502 is prevented from falling off under the impact of gas. Of course, the first blocking portion 502 may be fixed in other manners.

In one embodiment, referring to fig. 4 and 5, the partition 80 is fixedly connected to an end of the first support frame 60 facing the first chamber 103, so as to simplify the internal structure of the filtering noise damping device 100 and increase the stability of the fitting of the components.

In one embodiment, referring to fig. 2, the filter portion 40 is located partially within the first chamber 103, partially within the second chamber 104, and the sound attenuating portion 30 is located within the second channel 401. The flow resistance of the sound deadening portion 30 to the gas is larger than the flow resistance of the first one-way flow element 20 to the gas; the gas flowing into the first passage 301 through the air pump port 102 flows into the filter unit 40 through the side wall of the sound attenuation unit 30, and flows to the atmosphere communication port 101 through the filter unit 40.

By providing the silencing part 30 with a flow resistance to gas that is greater than the flow resistance to gas of the first one-way flow element 20, the second one-way flow element is not required as compared to the embodiment shown in fig. 1, which helps to simplify the complexity of the structure of the filtering silencer. In one embodiment, the baffle 80 is positioned within the second channel 401 and the edges of the baffle 80 are everywhere against the inner wall of the filter house 40. The first chamber 103 includes a cavity 405 between the side of the partition 80 facing the atmosphere communication port and the housing, the cavity 405 being a part of the second passage 401.

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

In one embodiment, when the first one-way flow element 20 comprises the elastic member 202 and the second blocking portion 201, the elastic coefficient of the elastic member 202 and the porosity of the sound attenuation portion 30 are adjusted to achieve that the flow resistance of the sound attenuation portion 30 to the gas is larger than the flow resistance of the first one-way flow element 20 to the gas. With this arrangement, when the air suspension is inflated, the gas flowing in from the atmosphere communication port 101 preferentially passes through the first one-way flow element 20 without passing through the sound deadening portion 30, ensuring that almost all of the gas entering the second chamber passes through the sound deadening portion 30.

When inflating the air suspension, see fig. 10, the air enters said venting chamber 14 through the atmospheric communication port 101, the air entering the venting chamber 14 needs to enter the cavity 405 through the filter 40; gas entering the cavity 405 opens the vent 105 and gas enters the first channel 301 through the vent 105; the air introduced into the first passage 301 flows into the air suspension through the air pump port 102. When the air suspension is deflated, referring to fig. 11, the air discharged from the air suspension enters the first channel 301 from the air pump interface 102, and the air cannot pass through the air vent 105 because the first one-way flow element 20 is arranged at the air vent 105, so that the air enters the filter part 40 through the silencing part 30, the air entering the filter part 40 enters the vent cavity 14, and finally the air in the vent cavity 14 is discharged through the atmosphere communication port 101.

The second embodiment is described below: the first chamber 103 is communicated with the air pump interface 102, and the second chamber 104 is communicated with the atmosphere communication port 101. It should be noted that, when the scheme of the second embodiment is introduced, only differences from the first embodiment are introduced, and the same points as those of the first embodiment may be referred to in the description related to the first embodiment, and are not described again.

In one embodiment, referring to fig. 3, when the first chamber 103 is communicated with the air pump interface 102, and the second chamber 104 is communicated with the atmosphere communication port 101, the filter portion 40 is provided with a second channel 401, one end of the second channel 401 is communicated with the air vent 105, and the other end is communicated with the air pump interface 102; the gas introduced into the second passage 401 through the air pump port 102 enters the first passage 301 through the vent hole 105, and then passes through the sound deadening portion 30 and is discharged through the atmosphere communication port 101. Wherein, during the air leakage process, the sum of the flow resistance of the noise-reduction part 30 and the first one-way flow element 20 to the air is smaller than the flow resistance of the filter part 40 to the air. With this arrangement, the gas flowing in from the air pump port 102 can be prevented from flowing into the second chamber 104 and being discharged after directly flowing through the filter unit 40 without passing through the sound-deadening portion 30, and the gas flowing in from the air pump port 102 must flow through the sound-deadening portion 30 and then flow to the atmosphere communication port 101.

In the process of inflating the air suspension, the gas entering the first chamber 103 through the air pump interface 102 exerts acting force on the elastic member 202 through the second blocking portion 201, when the acting force of the gas on the elastic member 202 is greater than the elastic force of the elastic member 202, the elastic member 202 is compressed to drive the second blocking portion 201 to move in the direction away from the vent 105, the vent 105 is opened, and the gas in the first chamber 103 can enter the first channel 301 through the vent 105; after the air suspension stops being inflated, the acting force of the gas in the first chamber 103 on the elastic piece 202 disappears, the elastic piece stretches, the second blocking part 201 is driven to move towards the air vent 105, and the second blocking part 201 blocks the air vent 105; in the process of air leakage of the air suspension, the acting force of the gas received by the second blocking part 201 is the same as the direction of the elastic force received by the elastic member 202, and the second blocking part 201 blocks the air vent 105 under the combined action of the acting force and the elastic force.

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 portion 40, the first air passage 106 is communicated with the atmosphere communicating port 101, the second chamber 104 further includes a second air passage 110 disposed between the inner wall of the housing 10 and the sound attenuating portion, and the first air passage 106 is communicated with the second air passage 110. By providing the first air passage 106 and the second air passage 110, the gas entering from the atmosphere communication port 101 can be prevented from directly impacting the muffling portion 30 and the filtering portion 40, and the service life of the muffling portion 30 and the filtering portion 40 can be prolonged.

In one embodiment, an end of the sound-deadening portion 30 facing the first chamber 103 abuts against the partition 80, an end of the sound-deadening portion 30 facing away from the first chamber 103 abuts against an inner wall of the housing 10, and the atmosphere communication port 101 is provided on a peripheral side of an end of the sound-deadening portion 30 facing away from the first chamber 103. The atmospheric communication port 101 communicates with the second air passage 110. So set up, at the in-process that the filtration silencing device loses heart, after the gas that passes through first cavity 103 passes through vent 105 and flows into first passageway 301, gas can directly not flow out through atmosphere intercommunication mouth 101 directly, and gas must flow through behind the noise reduction portion 30 rethread atmosphere intercommunication mouth 101 and discharge, is favorable to guaranteeing to realize when losing heart and falls the noise.

When the air suspension is inflated, referring to fig. 12, air enters the second air passage 110 of the second chamber 104 through the atmosphere communication port 101, then enters the first air passage 106 of the first chamber 103, is filtered by the filter portion 40, and then enters the second air passage 401, and then flows into the air suspension through the air pump interface 102. When the air suspension is deflated, referring to fig. 13, the air discharged from the air suspension enters the second channel 401 from the air pump port 102, and since the flow resistance of the filter portion 40 is greater than the sum of the flow resistances of the first one-way flow element 20 and the sound deadening portion 30, the air in the second channel 401 does not pass through the filter portion 40, but enters the first channel 301 through the first one-way flow element 20, then flows through the sound deadening portion 30 for noise reduction, and then flows to the second air channel 110 and is discharged through the atmosphere communication port 101.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims (11)

1. A filter muffler assembly, comprising:

a housing (10) including an atmosphere communication port (101) and an air pump interface (102); a first chamber (103), a second chamber (104) and a vent (105) are arranged in the shell, and the first chamber is communicated with the second chamber through the vent; a first one-way flow element (20) disposed at the vent through which gas within the first chamber may enter the second chamber;

a sound attenuation part (30) arranged in the second chamber, wherein a first channel (301) is arranged in the sound attenuation part, and one end of the first channel (301) is communicated with the air vent;

a filter portion (40) at least partially disposed within the first chamber;

the first chamber is communicated with the atmosphere communication port, and the first channel is communicated with the air pump interface; the air entering the first chamber from the atmosphere communication port flows to the first one-way circulation element after passing through the filter part, flows into the first channel through the first one-way circulation element, and is discharged through the air pump interface; the air flowing into the first channel through the air pump interface flows out through the side wall of the silencing part and then flows through the first chamber to be discharged; or,

the first chamber is communicated with the air pump interface, and the second chamber is communicated with the atmosphere communication port; the air entering the second chamber from the atmosphere communication port enters the first chamber, then flows to the air pump interface through the filter part and is discharged; the gas flowing into the first chamber through the air pump port flows into the first passage through the first one-way flow-through element, then flows to the atmosphere communication port through the muffler side wall, and is discharged.

2. The filtering noise reduction device according to claim 1, wherein the first chamber (103) is communicated with the atmosphere communication port (101), when the first channel (301) is communicated with the air pump interface (102), a second channel (401) is arranged in the filtering portion (40), the second channel (401) is communicated with the air vent (105), and one end of the second channel (401) facing the atmosphere communication port (101) is blocked.

3. The filtering silencer device according to claim 2, characterized in that the filter (40) is located partly in the first chamber (103) and partly in the second chamber (104), the silencer (30) being located in the second channel (401); the flow resistance of the sound-deadening portion (30) to the gas is larger than the flow resistance of the first one-way flow-through element (20) to the gas; the gas flowing into the first channel (301) through the air pump interface (102) flows into the filter part (40) through the side wall of the sound attenuation part (30) and flows to the atmosphere communication port (101) through the filter part (40).

4. The filtering noise reduction device according to claim 1, wherein the first chamber (103) is communicated with the atmosphere communication port (101), when the first passage (301) is communicated with the air pump interface (102), the first chamber (103) further comprises a first air passage (106) arranged between an inner wall of the housing (10) and the filtering portion (40), the first air passage (106) is communicated with the atmosphere communication port (101), a through hole (107) is further arranged in the housing (10) between the first air passage (106) and the second chamber (104), the filtering noise reduction device further comprises a second one-way flow element (50), and the second one-way flow element (50) is arranged at the through hole (107); the gas flowing out through the side wall of the sound attenuation part (30) enters the first air passage (106) through the second one-way flow element (50) and flows out through the atmosphere communication port (101).

5. The filtering noise silencer according to claim 4, wherein the second one-way flow element (50) includes a boss (501) formed by extending the inner wall of the housing (10) and a first blocking portion (502), the first blocking portion (502) is located on one side of the boss (501) facing the first air passage (106), and the end of the first blocking portion (502) far away from the boss (501) is fixedly arranged, 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), so that the end of the first blocking part (502) facing the inner wall of the shell (10) is separated from the boss (501), and the gas flows into the first air channel (106) through the gap between the first blocking part (502) and the boss (501).

6. The filtering noise reduction device according to claim 1, wherein the first chamber (103) is communicated with the air pump port (102), and when the second chamber (104) is communicated with the atmosphere communication port (101), the filtering portion (40) is provided with a second passage (401), one end of the second passage (401) is communicated with the air vent (105), and the other end is communicated with the air pump port (102); the gas entering the second channel (401) through the air pump port (102) enters the first channel (301) through the vent hole (105), then passes through the sound deadening portion (30) and is discharged through the atmosphere communication port (101).

7. The filtering noise silencer according to claim 6, wherein the first chamber (103) further includes a first air passage (106) provided between an inner wall of the housing (10) and the filter portion (40), the second chamber (104) further includes a second air passage (110) provided between the inner wall of the housing (10) and the noise-deadening portion, the first air passage (106) communicating with the second air passage (110); the gas entering the second air channel (110) through the atmosphere communication port (101) enters the first air channel (106), then passes through the filtering part (40) and is discharged through the air pump interface (102); the 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 channel (110) through the sound attenuation part (30) and is discharged through the atmosphere communication port (101).

8. The filtering noise-abatement device of claim 1, wherein the first unidirectional flow-through element (20) comprises a second blocking portion (201) and a resilient member (202), the resilient member (202) being fixed at an end facing away from the first chamber (103), the second blocking portion (201) being disposed at an end of the resilient member (202) facing the first chamber (103), the second blocking portion (201) blocking the vent opening (105); the gas in the first chamber (103) pushes the second blocking part (201) to compress the elastic piece (202), the vent hole (105) is opened, and the gas enters the first channel (301) through the vent hole (105); the elastic member (202) is stretched, and the second closing portion (201) closes the vent hole (105).

9. The filtering noise silencer device according to claim 1, further comprising a first support frame (60) and a second support frame (70) located in the second chamber (104), wherein the first support frame (60) and the second support frame (70) are both hollow structures, a side wall of the first support frame (60) is provided with a first vent hole (601), and a side wall of the second support frame (70) is provided with a second vent hole (701); the first support frame (60) is sleeved outside the second support frame (70), the second support frame (70) is arranged in the first channel (301), and the silencing part (30) is clamped between the first support frame (60) and the second support frame (70).

10. The filtering silencer device according to claim 1, further comprising a partition (80), the partition (80) being at least partially located between the first chamber (103) and the second chamber (104), the partition (80) opening the vent (105);

the first chamber (103) is communicated with the atmosphere communication port (101), when the first channel (301) is communicated with the air pump interface (102), one end, facing the first chamber (103), of the sound eliminating part (30) is abutted against the partition plate (80), and one end, facing the air pump interface (102), of the sound eliminating part (30) is abutted against the inner wall of the shell (10);

the first chamber (103) is communicated with the air pump interface (102), when the second chamber (104) is communicated with the atmosphere communication port (101), one end, facing the first chamber (103), of the sound attenuation part (30) is abutted to the partition plate (80), one end, facing away from the first chamber (103), of the sound attenuation part (30) is abutted to the inner wall of the shell (10), and the atmosphere communication port (101) is arranged on the periphery side, facing away from the end part of the first chamber (103), of the sound attenuation part (30).

11. An air suspension system comprising an air suspension and the filter silencer assembly of any one of claims 1 to 10.

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