Automobile air inlet channel assembly

Abstract

The utility model relates to an automobile air inlet channel assembly, and belongs to the technical field of automobile parts. The air inlet channel comprises an air inlet channel shell and a prefilter, an air inlet is formed in the side edge of the air inlet channel shell, an air outlet is formed in the bottom of the air inlet channel shell, and the prefilter is installed at the air inlet. The pre-filter is provided with a plurality of air inlet channels, a plurality of air outlet channels corresponding to the air inlet channels and a pre-filtering cavity, the pre-filtering cavity is located between the air inlet channels and the air outlet channels and communicated with the air inlet channels and the air outlet channels, and a pre-filtering outlet communicated with the pre-filtering cavity is formed in the bottom of the pre-filter. When the air inlet channel is used, air enters the pre-filtering cavity from the air inlet channel and then flows out from the air outlet channel, due to the fact that the air inlet channel and the air outlet channel are spaced by a certain distance, when gravel or rainwater and the air enter the air inlet channel together, heavy gravel and rainwater can fall down due to gravity and are located in the pre-filtering cavity, the gravel and the rainwater are not prone to entering the air inlet channel shell, and the air inlet channel is not prone to falling off. Therefore, the air is filtered.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and particularly to an automotive air intake duct assembly. Background Art

[0002] The air intake duct assembly is an important part of the air intake system of a truck. It is responsible for functions such as air intake guidance, pre-filtering of dust and moisture in the air intake system, providing relatively clean air for the air filter assembly, and also playing a role in reducing intake noise.

[0003] The air intake duct assembly used in traditional light trucks is relatively simple, mostly a straight pipe air intake pipe plus a rain cap structure. Its characteristics are low price and convenient molding, but the rainwater and impurities entering the air intake duct cannot be discharged in time, resulting in a relatively large pressure on the subsequent air filter. Utility Model Content

[0004] In order to filter out some rainwater and impurities, this application provides an automotive air intake duct assembly.

[0005] An automotive air intake duct assembly provided by this application adopts the following technical solutions:

[0006] An automotive air intake duct assembly includes an air intake duct housing and a pre-filter. The side of the air intake duct housing has an air inlet, and the bottom has an air outlet. The pre-filter is installed at the air inlet.

[0007] The pre-filter has a number of air inlet channels, a number of air outlet channels corresponding to the air inlet channels, and a pre-filter cavity. The pre-filter cavity is located between the air inlet channels and the air outlet channels, and the pre-filter cavity is connected to the air inlet channels and the air outlet channels. The bottom of the pre-filter is provided with a pre-filter outlet connected to the pre-filter cavity.

[0008] By adopting the above technical solutions, during use, air enters the pre-filter cavity from the air inlet channels and then flows out from the air outlet channels. Since there is a certain distance between the air inlet channels and the air outlet channels, when sand or rainwater enters together with the air, the heavier sand and rainwater will fall due to gravity and be located in the pre-filter cavity, making it difficult for sand and rainwater to enter the air intake duct housing, thereby filtering the air. The sand and rainwater located in the pre-filter cavity are discharged through the pre-filter outlet.

[0009] Optionally, the air inlet channels are spiral.

[0010] By adopting the above technical solution, the spiral air inlet channel enables air from all directions to enter the air inlet channel, increasing the amount of air entering the vehicle during driving. Additionally, after passing through the spiral air inlet channel, the air enters the pre-filter in a chaotic state, making the sand and rainwater held in the air also relatively chaotic in the pre-filter. As a result, the sand and rainwater are more likely to touch the wall of the pre-filter cavity and fall, and thus it is not easy for the sand and rainwater to enter the air outlet channel.

[0011] Optionally, the aperture of the air outlet channel gradually decreases along the air flow direction.

[0012] By adopting the above technical solution, when sand and rainwater enter the air outlet channel, it is not easy for them to pass through the air outlet channel. Additionally, according to the principle of aerodynamics, when air flows in the air outlet channel with a gradually decreasing aperture, the smaller the aperture, the faster the flow rate. When the air enters the air outlet channel from the pre-filter cavity, the gradually decreasing air outlet channel accelerates the air flow rate, making it easier for the air in the pre-filter cavity to flow into the air outlet channel and the air flowing out of the air outlet channel to be faster.

[0013] Optionally, an elastic tube for holding debris is sleeved on the pre-filter at the pre-filter outlet.

[0014] By adopting the above technical solution, under normal conditions, the elastic tube is closed and can hold sand, and rainwater can flow out from the closed part of the elastic tube. When the sand needs to be discharged, the elastic tube is squeezed to make it deformed, and its lower end can open to let the sand out.

[0015] Optionally, a plurality of secondary filter guide plates are arranged inside the air inlet housing, the plurality of secondary filter guide plates are arranged at intervals from top to bottom, there is a gap between the secondary filter guide plates and the left side wall of the air inlet housing to form a secondary filter cavity, and the air inlet housing is provided with a secondary filter outlet communicating with the secondary filter cavity below the secondary filter element.

[0016] By adopting the above technical solution, when air enters the air inlet housing, part of the air carrying sand and rainwater flows into the secondary filter cavity through the secondary filter channel. After touching the left side wall of the air inlet housing, the heavier sand and rainwater fall and remain in the secondary filter cavity, and then are discharged from the secondary filter outlet. Additionally, the rainwater in the air adheres to the secondary filter guide plates after touching them, and then the rainwater flows along the secondary filter guide plates towards the secondary filter outlet.

[0017] Optionally, the air inlet housing is recessed inward with arc-shaped ribs, and one end of the secondary filter guide plate is open and extends to form an arc-shaped groove that is snap-fitted with the arc-shaped ribs.

[0018] By adopting the above technical solution, when installing the secondary filter guide plate, the secondary filter guide plate is inserted into the air inlet housing of the air inlet passage from the air inlet of the air inlet housing, and then the secondary filter guide plate is sleeved on the arc-shaped rib, so that the arc-shaped rib is clamped into the arc-shaped groove, thereby installing the secondary filter guide plate in the air inlet housing.

[0019] Optionally, a layer of elastic sheet is laid in the arc-shaped groove of the secondary filter guide plate.

[0020] By adopting the above technical solution, after the arc-shaped rib is clamped into the arc-shaped groove of the secondary filter guide plate, the elastic sheet is squeezed and deformed, and the deformed elastic sheet gives pressure to the arc-shaped rib and the secondary filter guide plate, so that the secondary filter guide plate is not easy to slide off the arc-shaped rib, and further makes the connection between the secondary filter guide plate and the arc-shaped rib more stable.

[0021] Optionally, the port of the secondary filter cavity near the secondary filter outlet gradually narrows downward.

[0022] By adopting the above technical solution, the port of the secondary filter cavity near the secondary filter outlet gradually narrowing downward makes it easier for the sand and rainwater in the secondary filter cavity to flow to the secondary filter outlet.

[0023] Optionally, the pre-filter is sleeved with an elastic tube that is the same as the pre-filter outlet at the secondary filter outlet.

[0024] By adopting the above technical solution, the secondary filter outlet is closed by the elastic tube; when the sand needs to be discharged, the elastic tube is squeezed to deform, and its lower end can be opened to let the sand out.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When in use, air enters the pre-filter cavity from the air inlet passage and then flows out from the air outlet passage. Since there is a certain distance between the air inlet passage and the air outlet passage, when sand or rainwater enters together with the air, the heavier sand and rainwater will fall due to gravity and be located in the pre-filter cavity, making it difficult for the sand and rainwater to enter the air inlet housing, thereby filtering the air; the sand and rainwater located in the pre-filter cavity are discharged through the pre-filter outlet.

[0027] 2. The spiral air inlet passage enables air from all directions to enter the air inlet passage, increasing the air intake of the vehicle during driving; in addition, after passing through the spiral air inlet passage, the air enters the pre-filter in a chaotic state, making the sand and rainwater held in the air also more chaotic in the pre-filter, so that the sand and rainwater are easily touched by the cavity wall of the pre-filter cavity and fall, and further making it difficult for the sand and rainwater to enter the air outlet passage.

[0028] 3. After the air enters the intake duct housing, part of the air carries sand and rainwater and flows into the secondary filter cavity through the secondary filter channel. After touching the left side wall of the intake duct housing, the heavier sand and rainwater fall and remain in the secondary filter cavity, and then are discharged from the secondary filter outlet. In addition, the rainwater in the air will adhere to the secondary filter guide plate after touching it, and then the rainwater flows along the secondary filter guide plate towards the secondary filter outlet. Brief Description of the Drawings

[0029] Figure 1 is the overall structural schematic diagram of the intake duct assembly in the embodiment of the present application.

[0030] Figure 2 is the overall structural schematic diagram of the pre-filter in the embodiment of the present application.

[0031] Figure 3 is the structural schematic diagram of another perspective of the pre-filter in the embodiment of the present application.

[0032] Figure 4 is the cross-sectional view of the pre-filter in the embodiment of the present application.

[0033] Figure 5 is the state schematic diagram of the secondary filter guide plate inside the intake duct housing in the embodiment of the present application.

[0034] Figure 6 is the cross-sectional view of the intake duct housing in the embodiment of the present application.

[0035] Figure 7 is the structural schematic diagram of the secondary filter guide plate in the embodiment of the present application.

[0036] Figure 8 is the exploded view of the elastic sheet and the secondary filter guide plate in the embodiment of the present application.

[0037] Description of the Reference Numerals: 1, intake duct housing; 11, air inlet; 12, air outlet; 13, secondary filter cavity; 14, secondary filter outlet; 15, arc-shaped rib; 2, pre-filter; 21, air inlet channel; 22, air outlet channel; 23, pre-filter cavity; 24, pre-filter outlet; 3, elastic bundle tube; 4, secondary filter guide plate; 41, secondary filter channel; 42, arc-shaped groove; 43, positioning groove; 5, elastic sheet; 51, positioning protrusion. Detailed Description of the Embodiment

[0038] The following further describes the present application in detail with reference to the accompanying drawings.

[0039] The embodiment of the present application discloses an automotive intake duct assembly.

[0040] Refer to Figure 1, The automobile air intake duct assembly includes an air intake duct housing 1 and a pre-filter 2. The pre-filter 2 is installed on the air intake duct housing 1, and the sand and gravel particles in the air are preliminarily filtered through the pre-filter 2.

[0041] One side of the air intake duct housing 1 has an air inlet 11, and the bottom has an air outlet 12; the pre-filter 2 is installed at the air inlet 11 and is fixedly connected to the air intake duct housing 1 by rivets or screws. When the air intake duct assembly is in use, air enters from the air inlet 11, passes through the filtration of the pre-filter 2, and then flows out from the air outlet 12 at the bottom.

[0042] See Figure 2 And Figure 3 , Specifically, the pre-filter 2 has a number of air inlet channels 21, a number of air outlet channels 22 and a pre-filter cavity 23. The number of air outlet channels 22 corresponds to the number of air inlet channels 21. The pre-filter cavity 23 is located between the number of air inlet channels 21 and the number of air outlet channels 22, and the pre-filter cavity 23 is connected to the air inlet channels 21 and the air outlet channels 22. When in use, air enters the pre-filter cavity 23 from the air inlet channels 21 and then flows out from the air outlet channels 22. Since there is a certain distance between the air inlet channels 21 and the air outlet channels 22, when sand or rain enters together with the air, the heavier sand and rain will fall due to gravity and be located in the pre-filter cavity 23, making it difficult for the sand and rain to enter the air intake duct housing 1, thereby filtering the air.

[0043] Combined with Figure 4 , To discharge the sand or rain in the pre-filter cavity 23, a pre-filter outlet 24 communicating with the pre-filter cavity 23 is opened at the bottom of the pre-filter 2, and the sand and rain in the pre-filter cavity 23 can be discharged from the pre-filter outlet 24.

[0044] To prevent the pre-filter outlet 24 from easily affecting the air flow, an elastic tube 3 is sleeved on the pre-filter 2 at the pre-filter outlet 24. The elastic tube 3 is made of rubber or silica gel. Its lower end is flat and normally closed. The elastic tube 3 temporarily holds the sand. Also, because the closure is not very tight, rainwater can flow out from the closure of the elastic tube 3. When the sand needs to be discharged, the elastic tube 3 is squeezed to make it deformed, and its lower end can open to let the sand out.

[0045] The air inlet channels 21 are spiral, so that air from all directions can enter the air inlet channels 21, increasing the air intake volume of the vehicle during driving. In addition, after passing through the spiral air inlet channels 21, the air enters the pre-filter 2 in a chaotic state, making the sand and rain clamped in the air also more chaotic in the pre-filter 2, so that the sand and rain are more likely to touch the cavity wall of the pre-filter cavity 23 and fall, and further making it difficult for the sand and rain to enter the air outlet channels 22.

[0046] The aperture of the air outlet passage 22 gradually narrows along the air flow direction, that is, the diameter of one end of the air outlet passage 22 close to the pre-filter cavity 23 is larger, and the diameter of the other end is smaller. Even if sand and rainwater enter the air outlet passage 22, it is not easy to pass through the air outlet passage 22. In addition, according to the principle of aerodynamics, when air flows in the air outlet passage 22 with a gradually narrowing aperture, the smaller the aperture, the faster the flow rate. When air enters the air outlet passage 22 from the pre-filter cavity 23, the gradually narrowing air outlet passage 22 accelerates the air flow rate, so that the air in the pre-filter cavity 23 is more likely to flow into the air outlet passage 22, and the air flowing out of the air outlet passage 22 is faster.

[0047] See Figure 5 And Figure 6 , to further reduce impurities in the air, a number of secondary filter guide plates 4 are provided inside the intake duct housing 1. The number of secondary filter guide plates 4 are arranged at intervals from top to bottom, and a secondary filter passage 41 for air and impurities to pass through is formed between two adjacent secondary filter guide plates 4.

[0048] A number of secondary filter guide plates 4 have a gap with the left side wall of the intake duct housing 1 and form a secondary filter cavity 13. The intake duct housing 1 is provided with a secondary filter outlet 14 communicating with the secondary filter cavity 13 below the secondary filter element; when air enters the intake duct housing 1, part of the air carries sand and rainwater and flows into the secondary filter cavity 13 from the secondary filter passage 41. After touching the left side wall of the intake duct housing 1, the heavier sand and rainwater fall and remain in the secondary filter cavity 13, and then are discharged from the secondary filter outlet 14. In addition, the rainwater in the air adheres to the secondary filter guide plates 4 after touching them, and then the rainwater flows along the secondary filter guide plates 4 to the secondary filter outlet 14.

[0049] To make the sand and rainwater in the secondary filter cavity 13 more likely to flow to the secondary filter outlet 14, the port of the secondary filter cavity 13 close to the secondary filter outlet 14 gradually narrows downward.

[0050] To prevent the secondary filter outlet 14 from affecting the air flow in the intake duct housing 1, an elastic tube 3 identical to the pre-filter outlet 24 is installed at the secondary filter outlet 14, and the secondary filter outlet 14 is closed by the elastic tube 3; when sand needs to be discharged, the elastic tube 3 is squeezed to deform it, and its lower end can open to allow the sand to be discharged.

[0051] See Figure 6 And Figure 7 , an arc-shaped rib 15 is integrally formed by inward depression of the intake duct housing 1, and one end of the secondary filter guide plate 4 is open and extends to form an arc-shaped groove 42; when installing the secondary filter guide plate 4, the secondary filter guide plate 4 is inserted into the intake duct housing 1 from the air inlet 11 of the intake duct housing 1, and then the secondary filter guide plate 4 is sleeved on the arc-shaped rib 15 so that the arc-shaped rib 15 is snapped into the arc-shaped groove 42, thereby installing the secondary filter guide plate 4 in the intake duct housing 1.

[0052] See Figure 7 AndFigure 8 To make the connection between the arc-shaped rib 15 and the secondary filter guide plate 4 more stable, an elastic sheet 5 is laid in the arc-shaped groove 42 of the secondary filter guide plate 4 with glue. The elastic sheet 5 is made of rubber or silica gel. A number of positioning protrusions 51 are integrally protruded on the back surface of the elastic sheet 5. A number of positioning grooves 43 for the positioning protrusions 51 to be embedded are formed on the groove wall of the arc-shaped groove 42 of the secondary filter guide plate 4. During installation, the positioning protrusions 51 of the elastic sheet 5 are respectively embedded into the positioning grooves 43 one by one.

[0053] After the arc-shaped rib 15 is snapped into the arc-shaped groove 42 of the secondary filter guide plate 4, the elastic sheet 5 is squeezed and deformed. The deformed elastic sheet 5 applies pressure to the arc-shaped rib 15 and the secondary filter guide plate 4, making it difficult for the secondary filter guide plate 4 to slide off the arc-shaped rib 15, and thus making the connection between the secondary filter guide plate 4 and the arc-shaped rib 15 more stable.

[0054] The implementation principle of an automotive air intake duct assembly in an embodiment of the present application is as follows: When the air intake duct assembly is in use, air enters the pre-filter chamber 23 from the air inlet passage 21 of the pre-filter 2, enters the interior of the air intake duct housing 1 after being pre-filtered by the pre-filter 2, and then passes through the filtration of the secondary filter guide plate 4. Finally, the filtered air flows out from the air outlet 12.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automobile air intake assembly, characterized in that: It comprises an air inlet housing (1) and a pre-filter (2), wherein the air inlet housing (1) has an air inlet (11) on the side and an air outlet (12) on the bottom, and the pre-filter (2) is installed on the air inlet (11); The pre-filter (2) comprises a plurality of air inlet channels (21), a plurality of air outlet channels (22) corresponding to the plurality of air inlet channels (21), and a pre-filter chamber (23); the pre-filter chamber (23) is located between the plurality of air inlet channels (21) and the plurality of air outlet channels (22), and the pre-filter chamber (23) is connected to the air inlet channels (21) and the air outlet channels (22); and a pre-filter outlet (24) connected to the pre-filter chamber (23) is provided at the bottom of the pre-filter (2).

2. The automobile air intake assembly according to claim 1, characterized in that: The air inlet channel (21) is spiral-shaped.

3. The automobile air intake assembly according to claim 1, characterized in that: The aperture of the air outlet channel (22) gradually decreases along the air flow direction.

4. The automobile air intake assembly according to claim 1, characterized in that: The pre-filter (2) is provided with an elastic bundle tube (3) for holding debris at the pre-filter outlet (24).

5. The automobile air intake assembly according to claim 4, characterized in that: The air intake housing (1) is provided with a plurality of secondary filter guide plates (4) inside, the plurality of secondary filter guide plates (4) being arranged at intervals from top to bottom, a gap being formed between the secondary filter guide plates (4) and the left side wall of the air intake housing (1) to form a secondary filter cavity (13), and the air intake housing (1) is provided with a secondary filter outlet (14) below the secondary filter element and communicating with the secondary filter cavity (13).

6. The automobile air intake assembly according to claim 5, characterized in that: The air inlet housing (1) is inwardly recessed with an arc-shaped rib (15), and one end of the secondary filter guide plate (4) is open and extends to form an arc-shaped groove (42) that is engaged with the arc-shaped rib (15).

7. The automobile air intake assembly according to claim 6, characterized in that: The secondary filter guide plate (4) is provided with a layer of elastic sheet (5) in the arc-shaped groove (42).

8. The automobile air intake assembly according to claim 5, characterized in that: The port of the secondary filter cavity (13) close to the secondary filter outlet (14) gradually narrows downwards.

9. The automobile air intake assembly according to claim 5, characterized in that: The pre-filter (2) is provided with an elastic bundle tube (3) identical to the pre-filter outlet (24) at the secondary filter outlet (14).

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