CN114352448A - Drainage device of automobile air inlet system - Google Patents
Drainage device of automobile air inlet system Download PDFInfo
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- CN114352448A CN114352448A CN202210015468.2A CN202210015468A CN114352448A CN 114352448 A CN114352448 A CN 114352448A CN 202210015468 A CN202210015468 A CN 202210015468A CN 114352448 A CN114352448 A CN 114352448A
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Abstract
本发明公开了一种汽车进气系统排水装置，涉及汽车降噪排水装置领域，包括迷宫式流水槽，其设置于所述空滤器壳体上，包括流水槽壳体和网格加强筋，网格加强筋横纵交错设置于壳体上，部分网格加强筋上设置使水流沿落差方向流出、且使水流流向构成的流道为迷宫型线路的豁口；排水结构本体，其嵌设于空滤器壳体中，包括伞帽和位于伞帽下部的柱状部，伞帽中设置排水结构滤网，所述柱状部的柱体上设置多个通孔，部分所述通孔内及周边填充吸音棉，填充的吸音棉将所述排水结构滤网抵持在伞帽内部下方。本发明的汽车进气系统排水装置，可同时实现汽车进气系统中的排水和降噪功能，且保障在高效排水的同时减少噪音向外辐射。
The invention discloses a drainage device for an air intake system of an automobile, which relates to the field of automobile noise reduction and drainage devices. The grid reinforcing ribs are arranged on the shell in a crisscross pattern, and some grid reinforcing ribs are provided with gaps that allow the water flow to flow out in the direction of the drop, and the flow channel formed by the water flow direction is a labyrinth line; the drainage structure body is embedded in the hollow. The filter housing includes an umbrella cap and a columnar part located at the lower part of the umbrella cap, a drainage structure filter screen is arranged in the umbrella cap, a plurality of through holes are arranged on the cylinder of the columnar part, and some of the through holes and the periphery are filled with sound absorption Cotton, the filled sound-absorbing cotton presses the drainage structure filter under the inside of the umbrella cap. The drainage device of the automobile air intake system of the invention can realize the functions of drainage and noise reduction in the automobile air intake system at the same time, and ensures the efficient drainage and reduces the noise radiated to the outside.
Description
Technical Field
The invention relates to the field of automobile noise reduction drainage devices, in particular to a drainage device of an automobile air intake system.
Background
In the use process of an automobile, water entering from the outside can be generated in a pipeline of an automobile air inlet system due to the influence of a humid environment and the like, the normal operation of an engine can be seriously influenced after the humid air enters, and meanwhile, the overall performance of the automobile can be influenced due to accumulated water accumulated in the air inlet system. Therefore, it is often necessary to install a drain in the intake system of the automobile. Common drainage structures in the prior art are: a drain hole is formed at the lowest point of the air passage, and accumulated water is directly drained; in other publications, there are some other drainage structures, such as an external siphon drain pipe as a drainage device disposed on the exhaust system of the vehicle, so that the drainage device can draw out the liquid accumulated inside the exhaust system to the outside of the exhaust system by means of the external siphon pipe.
Because the mode that adopts direct trompil realizes the drainage operation in above-mentioned structure, and current exhaust system's wash port/siphon generally sets up near the silencer, has influenced the air current structure of intake duct to lead to bringing very big noise, simultaneously, adopt the mode of direct trompil, when carrying out the drainage, because the engine is the negative pressure in the air intake system at the during operation, drainage speed is also slower.
In order to reduce the noise influence caused by the drain hole while meeting the air intake requirement, technical personnel consider to fill and arrange substances with sound absorption and noise reduction effects, such as noise reduction cotton, around the drain hole; however, in the conventional noise reduction mode, on one hand, the water discharge efficiency is influenced due to the fact that the sound absorption cotton absorbs water, and the water discharge effect is reduced; on the other hand, inhale the cotton back that absorbs water of sound, its syllable-dividing effect can worsen, and the cotton emergence deformation of amortization after intaking simultaneously can remain the cavity equally, leads to the air current structural change of admitting air to bring extra noise, can not reach the effect that reduces the noise after the water absorption state.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the drainage device of the automobile air intake system, which can realize the drainage and noise reduction functions in the automobile air intake system at the same time and ensure that the noise reduction effect is not influenced by the drainage efficiency.
In order to achieve the above purpose, in one embodiment, the invention adopts the technical scheme that:
the utility model provides an automobile air intake system drainage device, its sets up in the air cleaner casing of air intake system minimum, and it includes:
the labyrinth type flume is arranged on the air filter shell and comprises a flume shell and grid reinforcing ribs, the grid reinforcing ribs are arranged on the shell in a transversely-longitudinally staggered manner, and part of the grid reinforcing ribs are provided with notches which enable water to flow out along the fall direction and enable a flow passage formed by the flow direction of the water to be a labyrinth type line; the drainage structure body is embedded in the air filter shell and comprises an umbrella cap and a columnar portion located on the lower portion of the umbrella cap, a drainage structure filter screen is arranged in the umbrella cap, a plurality of through holes are formed in the columnar portion, and part of the drainage structure filter screen is filled in the through holes and the periphery of the columnar portion.
In a preferred embodiment, the drainage device of an air intake system of an automobile of the present invention further comprises:
the through hole in the drainage structure body comprises a lower through hole and an upper through hole, the lower through hole is located on one side, away from the umbrella cap, of the columnar portion, the upper through hole is located on one end, close to the umbrella cap, of the columnar portion, and the filled sound absorption cotton supports the drainage structure filter screen to be held on the periphery of the upper through hole.
In a preferred embodiment, the lower through holes and the upper through holes are arranged in a one-to-one correspondence, at least three through hole groups consisting of the lower through holes and the upper through holes which are mutually corresponding are arranged on the drainage structure body, each upper through hole is positioned on the same radial section of the columnar part, and each lower through hole is positioned on the other radial section of the columnar part
In a preferred embodiment, the column part is of a hollow cylindrical structure, and the bottom of the column part is provided with a buckle which is clamped with the air filter shell of the air intake system.
In a preferred embodiment, sound-absorbing cotton is filled in the through holes and the periphery of the through holes, and the filled sound-absorbing cotton supports the drainage structure filter screen to be below the inner part of the umbrella cap.
Further, the sound-absorbing cotton is filled in the through hole and the periphery after being folded, and the thickness of the sound-absorbing cotton at the periphery of the through hole is higher than that of other positions.
In a preferred embodiment, the grid reinforcing ribs in the labyrinth type launder are connected with each other to form a grid frame structure with height difference, the grid reinforcing ribs are provided with clamping ports at equal intervals, each grid reinforcing rib is arranged in a direction perpendicular to the grid reinforcing rib, and other grid reinforcing ribs fixed by the clamping ports in a clamping mode are connected to form the grid frame structure.
Furthermore, in the grid reinforcing ribs in the labyrinth type water flowing groove, drainage openings are formed in the grid reinforcing ribs close to the direction of height drop and the position of the drainage structure body.
In a preferred embodiment, the drainage structure body is integrally formed.
In a preferred embodiment, the sound-absorbing cotton is glass fiber which does not absorb water.
Compared with the prior art, the invention has the advantages that:
(1) the drainage device of the automobile air intake system comprises a specially designed drainage structure body and a labyrinth type launder matched with the drainage structure body, wherein the drainage structure is an independent sub-part and is combined with the body in a clamping way, so that the difficulty of the processing technology of the body is not increased; this patent drainage structure is different from conventional guide plate structure, does not receive the restriction of the interior gas flow field of cabin, and the drainage principle is reliable, can not cause the functional failure, and the effect of making an uproar falls in also can realizing of this device when realizing quick drainage, kills two birds with one stone.
(2) The drainage device of the automobile air intake system comprises a drainage structure body with a specific structure and a water flowing channel with a labyrinth type, wherein the water flowing channel is arranged on an air filter shell, and on one hand, the water flowing can reach the drainage structure body at the lowest position after a long time and the channel; the sound-absorbing cotton blocks the sound and stores the sound in the groove; on the other hand, as the drainage structure has a water storage area, after the height of the drainage structure exceeds the limit of the preset opening, accumulated water can be smoothly discharged through the upper through hole under the action of gravity. The structure arrangement can lead sundries, silt and the like mixed in water to enter the water storage area along with the water for deposition, and avoids the relevant sundries from entering the columnar part of the drainage structure.
(3) In the drainage device of the automobile air intake system, the drainage structure is provided with the multi-layer filtering, so that holes can be effectively kept clean, dust is prevented from being obviously accumulated in the noise reduction pipe, and the service life of the noise reduction pipe is greatly prolonged; in addition, the drain hole is formed in the side face of the columnar body, the vertical drainage mode that the drain hole is formed in the lowest point of the exhaust system is avoided, on one hand, the noise can be effectively prevented from being radiated and conducted outwards through the drain hole, on the other hand, the arrangement hole diameter of the drain hole is also increased, and the problem that the original drain hole is easily blocked and loses efficacy by dirt due to the fact that the drain hole is formed in the lowest point of the exhaust system is solved.
Drawings
The terms and their meanings in the present application are as follows:
radiation: propagating from the center to various directions;
assembling: integrating a plurality of parts into one part through an assembling means;
a flow guide plate: and the plate-shaped structure changes the direction and the speed of peripheral airflow.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a drain structure and an air filter housing of an automotive exhaust system in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural view of a labyrinth gutter channel in a drainage system of an automobile exhaust system according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a drainage structure body in a drainage device of an automobile exhaust system according to an embodiment of the present invention.
In the figure: 1-labyrinth type flume, 2-drainage structure body, 3-air filter shell, 11-flume shell, 12-grid reinforcing rib, 13-gap, 21-umbrella cap, 22-column part, 23-drainage structure filter screen, 24-upper through hole, 25-lower through hole, 26-sound absorbing cotton, 27-buckle and 28-water storage area.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein without making any creative effort fall within the scope of the claimed protection.
The embodiment of the invention provides a drainage device of an automobile exhaust system, which can realize the drainage and noise reduction functions in the automobile exhaust system at the same time, and the noise reduction effect is not influenced by the drainage efficiency.
In order to achieve the above effects, the general idea of the present application is as follows:
the utility model provides an automobile exhaust system drainage device, its sets up in the air cleaner casing of air intake system minimum, includes:
the labyrinth type flume is arranged on the air filter shell and comprises a flume shell and grid reinforcing ribs, wherein the grid reinforcing ribs are arranged on the flume shell in a transversely-longitudinally staggered manner, and part of the grid reinforcing ribs are provided with openings which enable water to flow out along the fall direction and enable a flow passage formed by the flow direction of the water to be a labyrinth type line; the drainage structure body is embedded in the air filter shell and comprises an umbrella cap and a columnar portion located on the lower portion of the umbrella cap, a drainage structure filter screen is arranged in the umbrella cap, the columnar portion is of a hollow structure in the preferred embodiment, a plurality of through holes are formed in the column body of the columnar portion, sound absorbing cotton is filled in the through holes and on the periphery of the through holes, and the filled sound absorbing cotton abuts against and holds the drainage structure filter screen below the inner portion of the umbrella cap. Through the arrangement of the umbrella cap structure and the columnar part, the water flow which is guided by the labyrinth type launder and contains impurities such as dust, silt and the like can be ensured to reach the drain hole only by filtering through the filter screen of the drainage structure.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In a first aspect, referring to fig. 1, an embodiment of the present invention provides a drainage device for an automobile exhaust system, which is disposed at the lowest position of an air filter housing 3 of an intake system, and includes: the labyrinth type launder 1 is arranged on the air filter shell 3 and comprises a launder shell 11 and grid reinforcing ribs 12, wherein the grid reinforcing ribs 12 are arranged on the launder shell 11 in a transversely and longitudinally staggered manner, and a part of the grid reinforcing ribs 12 are provided with notches 13 which enable water to flow out along the fall direction and enable a flow passage formed by the flow to be a labyrinth line;
the drainage structure body 2 is embedded in the air filter shell 3 and comprises an umbrella cap 21 and a columnar part 22 positioned at the lower part of the umbrella cap 21, a drainage structure filter screen 23 is arranged in the umbrella cap 21, a plurality of through holes 24 and 25 are arranged on the columnar part 22, and part of the through holes and the periphery are filled with sound absorption cotton 26.
In a preferred embodiment, the through holes in the drainage structure body 2 include a lower through hole 25 at one side of the columnar part 22 far away from the umbrella cap 21 and an upper through hole 24 at one end of the columnar part 22 close to the umbrella cap 21, and the filled sound-absorbing cotton 26 supports the drainage structure screen 23 at the periphery of the upper through hole 24.
In a preferred embodiment, the lower through holes 25 are arranged in one-to-one correspondence with the upper through holes 24, at least three through hole groups consisting of the lower through holes 24 and the upper through holes 25 which are mutually corresponding are arranged on the drainage structure body 2, each upper through hole 25 is located on the same radial section of the columnar portion 22, and each lower through hole 25 is located on the other radial section of the columnar portion 22.
In a preferred embodiment, the column part 22 is a hollow cylinder structure, and the bottom of the column part 22 is provided with a buckle 27 which is clamped with the air filter housing 3 of the air intake system.
In a preferred embodiment, the through holes and the periphery are filled with sound absorbing cotton 26, and the filled sound absorbing cotton 26 supports the drainage structure filter screen 23 below the inner part of the umbrella cap 21.
Further, the sound-absorbing cotton 26 may be folded and filled in the through hole and the periphery, and the sound-absorbing cotton 26 around the through hole is thicker than other positions. Because inhale cotton 26 principal ingredients of sound is glass fiber, does not absorb water, and the fine and close degree that glass fiber stacked can influence the speed of drainage promptly, also can influence the degree of making an uproar that falls, so to inhale cotton glass fiber's of sound density among the drainage structures, can set up great thickness at the through-hole periphery according to the demand, also can adjust according to actual setting demand and relevant experimental data or experience.
In a preferred embodiment, the grid reinforcing ribs 12 in the labyrinth type gutter channel 1 are connected with each other to form a grid frame structure with height difference, the grid reinforcing ribs 12 are provided with clamping ports at equal intervals, and each grid reinforcing rib 12 is connected with other grid reinforcing ribs 12 which are arranged in the vertical direction of the grid reinforcing rib and are clamped and fixed through the clamping ports to form the grid frame structure.
Furthermore, in the grid reinforcing ribs 12 in the labyrinth type launder 1, drainage gaps 13 are arranged on the grid reinforcing ribs 12 close to the direction of height fall and the position of the drainage structure body 2. Furthermore, the arrangement of these gaps and the height difference cooperate to guide the moisture accumulated in the grid formed by the grid ribs to preferentially flow to the direction with lower height guided by the gaps 13, thereby forming a circumferential labyrinth line. In a preferred embodiment, the fluid flow lines are configured as shown by the arrows in FIG. 2.
In a preferred embodiment, the drainage structure body 2 can be integrally formed, so that the use effect of the product of the invention is not influenced, the manufacturing and processing cost is saved, and the difficulty of the manufacturing and processing process is reduced.
In a preferred embodiment, the sound-absorbing cotton 26 is glass fiber which does not absorb water. The glass fiber which does not absorb water can prevent the sound-absorbing effect from being changed due to the deformation of the sound-insulating material after absorbing water, and can realize the effect of blocking accumulated water and complete the related structural functions of water blocking, filling and the like.
The technical principle of the technical scheme of the application is as follows:
the labyrinth type water flowing groove 1 is arranged on the air filter shell 3, the labyrinth type water flowing groove 1 is composed of a water flowing groove shell 11 and grid type reinforcing ribs 12 which are arranged on the water flowing groove shell 11 in a transverse and longitudinal staggered mode, wherein part of the grid type reinforcing ribs 12 are provided with openings 13, so that water flow can flow down along the openings 13 along the fall direction, in a specific implementation scheme, a flow channel formed by the flow direction of the water flow guided by each opening 13 is a labyrinth type line and is not in a conventional straight line or spiral line flow direction, so that on one hand, condensed water on the air filter shell 3 is fully collected and guided, on the other hand, dust, fine sand and the like mixed in the water are further deposited at the turning position of the water flow, the filtering effect of a related structure is further enhanced, and the water outlet is prevented from being blocked by related sundries.
In a preferred embodiment, the drainage structure is provided with an impoundment area 28, and when the height of the accumulated water in the impoundment area 28 exceeds a certain value, the accumulated water in the impoundment area 28 is drained automatically under the action of gravity. In a particular embodiment, the height of the reservoir 28 is determined by the difference in vertical height between the bottom of the drainage body and the bottom of the upper opening 24 in the drainage body 2. The accumulated water discharge port of the scheme of the invention is provided with the sound-absorbing cotton 26, the sound-absorbing cotton 26 is made of glass fiber, and the sound-absorbing cotton 26 can not only play a role of noise reduction, but also does not influence the discharge of accumulated water in the water storage area 28.
Based on this application technical scheme structure that figure 1 shows, because water outwards discharges after inhaling the sound cotton, under the normal condition, inhale the discharge velocity that the sound cotton can influence water, nevertheless, ponding discharge hysteresis can not appear in this application technical scheme, can also realize the quick discharge of ponding simultaneously, the reason is as follows:
1. because the rivers passageway setting of empty filter casing area labyrinth, flowing water can reach to be located the lowest drainage structures body department through a longer time and passageway, and block to store in this drainage structures bottom by inhaling the sound cotton, make a water storage area (like figure 1) appear in the drainage structures, after the difference in height h that the water storage height surpassed water storage area bottom and upper portion through-hole among the drainage structures, ponding can be under the action of gravity, flow into columnar body middle part smoothly through the upper portion through-hole, and finally discharge through the wash port.
2. Through above-mentioned structural design, can reduce the volume that is used for structures such as filtration, dust removal for this drainage structures diameter is bigger than current drainage structures, and the drainage is more unobstructed.
3. The cotton principal ingredients of sound absorption that uses in this application is glass fiber, does not absorb water, has avoided the change of inhaling the sound effect on the one hand, and on the other hand can realize blockking the effect of ponding.
4. The degree of compaction of the glass fiber stack can be adjusted.
5. The air filter is vibrated, and accumulated water can be smoothly discharged under vibration.
According to the technical scheme, the drainage structure is provided with the multi-layer filter, so that the cleanness of the holes can be effectively kept. In addition, the drain hole is provided with silencing cotton, so that noise radiation can be effectively prevented; the drainage structure is an independent sub-part and is combined with the body in a clamping way, so that the process difficulty of the body is not increased; the drainage structure does not relate to a gas flow field in the engine room, the drainage principle is reliable, and functional failure cannot be caused. The drainage structure of the invention utilizes a multi-layer filtering structure to separate mud and water, and the filtered water is discharged through the noise reduction pipe with the built-in sound absorption cotton. Greatly reduced is from the noise of drain hole department radiation, simultaneously because of the multilayer filters back, the dust can obviously not accumulate to falling the pipe of making an uproar, falls the pipe life of making an uproar and far lengthens by a wide margin.
In the description of the present application, it is to be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description is of specific embodiments of the application only, so as to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an automobile air intake system drainage device, its sets up in the air cleaner casing of air intake system minimum, its characterized in that includes:
the labyrinth type flume is arranged on the air filter shell and comprises a flume shell and grid reinforcing ribs, the grid reinforcing ribs are arranged on the shell in a transversely-longitudinally staggered manner, and part of the grid reinforcing ribs are provided with notches which enable water to flow out along the fall direction and enable a flow passage formed by the flow direction of the water to be a labyrinth type line;
the drainage structure body is embedded in the air filter shell and comprises an umbrella cap and a columnar portion located on the lower portion of the umbrella cap, a drainage structure filter screen is arranged in the umbrella cap, a plurality of through holes are formed in the columnar portion, and part of the drainage structure filter screen is filled in the through holes and the periphery of the columnar portion.
2. The drainage apparatus of an air intake system of a vehicle as set forth in claim 1, wherein:
the through hole in the drainage structure body comprises a lower through hole and an upper through hole, the lower through hole is located on one side, away from the umbrella cap, of the columnar portion, the upper through hole is located on one end, close to the umbrella cap, of the columnar portion, and the filled sound absorption cotton supports the drainage structure filter screen to be held on the periphery of the upper through hole.
3. The drainage apparatus of an air intake system of a vehicle as set forth in claim 2, wherein:
the column portion is a hollow cylinder structure, and a buckle clamped with the air filter shell of the air intake system is arranged at the bottom of the column portion.
4. The drainage apparatus of an air intake system of a vehicle as set forth in claim 2, wherein: the lower through holes and the upper through holes are arranged in a one-to-one correspondence manner, at least three through hole groups formed by the lower through holes and the upper through holes which are mutually corresponding are arranged on the drainage structure body, each upper through hole is positioned on the same radial section of the columnar part, and each lower through hole is positioned on the other radial section of the columnar part.
5. The drainage apparatus of an air intake system of a vehicle as set forth in claim 1, wherein:
the through holes and the periphery are filled with sound-absorbing cotton, and the filled sound-absorbing cotton enables the filter screen of the drainage structure to be abutted against the lower part of the inner part of the umbrella cap.
6. The drainage apparatus of an air intake system of a vehicle as set forth in claim 5, wherein:
inhale the cotton after folding fill in the through-hole and periphery inhale the cotton thickness of sound of through-hole periphery is higher than other positions.
7. The drainage apparatus of an air intake system of a vehicle as set forth in claim 1, wherein:
grid strengthening rib interconnect in the labyrinth tye is for having the grid frame construction of difference in height, set up the equidistant joint mouth in interval on the grid strengthening rib, every grid strengthening rib is through setting up rather than the vertical direction, through other grid strengthening ribs that joint mouth joint is fixed are crosslinked and become grid frame construction.
8. The vehicular intake system drain apparatus according to claim 7, wherein:
and drainage openings are formed in the grid reinforcing ribs in the labyrinth type flume in the direction close to the height drop and the grid reinforcing ribs at the positions close to the drainage structure body.
9. The drainage apparatus of an air intake system of a vehicle as set forth in claim 1, wherein: the drainage structure body is integrally formed.
10. The drainage apparatus of an air intake system of a vehicle as set forth in claim 1, wherein: the sound-absorbing cotton is glass fiber which does not absorb water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015468.2A CN114352448B (en) | 2022-01-07 | 2022-01-07 | Drainage device of automobile air inlet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015468.2A CN114352448B (en) | 2022-01-07 | 2022-01-07 | Drainage device of automobile air inlet system |
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| CN114352448A true CN114352448A (en) | 2022-04-15 |
| CN114352448B CN114352448B (en) | 2022-10-14 |
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| CN202210015468.2A Active CN114352448B (en) | 2022-01-07 | 2022-01-07 | Drainage device of automobile air inlet system |
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| CN119705296A (en) * | 2025-02-07 | 2025-03-28 | 宜宾凯翼汽车有限公司 | Sound insulation device for water outlet of automobile water flow channel and sound insulation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119705296A (en) * | 2025-02-07 | 2025-03-28 | 宜宾凯翼汽车有限公司 | Sound insulation device for water outlet of automobile water flow channel and sound insulation method thereof |
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| CN114352448B (en) | 2022-10-14 |
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