A commercial vehicle air intake assembly and a commercial vehicle

Abstract

This invention relates to a commercial vehicle air intake assembly and a commercial vehicle, belonging to the field of vehicle power systems. The technical solution is as follows: a commercial vehicle air intake assembly includes an air intake body, within which a water screening component, a water filtering component, and a vortex component are provided. The water screening component includes a water screening plate and a water collecting hopper, the bottom of which connects to the outside of the air intake body. The water filtering component includes multiple stacked blades, with a first water collecting groove below the blades, which connects to the outside of the air intake body. The vortex component is located below the water filtering component, and a second water collecting groove is also provided below the vortex component, connected to the outside of the air intake body through the first water collecting groove. This solution, through a three-stage water removal assembly, gradually separates moisture from the air while simultaneously improving the removal capacity of dust and other impurities, significantly reducing the moisture and dust content of the air entering the oil filter and air filter, thus ensuring the service life of the oil filter and air filter and the combustion performance of the engine.

Description

Technical Field

[0001] This invention relates to the field of vehicle powertrain systems, and in particular to a commercial vehicle air intake assembly, and a commercial vehicle. Background Technology

[0002] The intake system is part of the vehicle's power system. It is located at the front of the engine and draws in outside air through the engine's combustion back pressure to provide oxygen for combustion. Since the intake system supplies air to the engine, it needs to remove water droplets and impurities from the air as thoroughly as possible. If the filtration is not thorough, the air quality will directly affect the combustion in the engine and the vehicle's power performance. Dust accumulation will also accelerate engine wear.

[0003] Heavy commercial vehicles operate under harsh conditions, often in dusty environments or in rainy or snowy weather. Therefore, heavy commercial vehicles have high requirements for the performance of their intake systems in removing water and dust.

[0004] The intake system of heavy commercial vehicles mainly includes the front intake duct, oil filter, and air filter. The oil filter initially absorbs dust and impurities in the air through internal engine oil, and the remaining dust is filtered by the filter element in the air filter.

[0005] However, in severe rainy or snowy weather, or in environments with high humidity, the moisture content of the air drawn into the intake system increases significantly. Existing oil filters and air filters are mainly designed to filter solid impurities. When the moisture content of the air is too high, the amount of water absorbed by the oil filter and the air filter element in the air filter will increase dramatically. In particular, when the air filter element absorbs too much water and becomes damp, the intake resistance of the air filter will increase significantly, the intake volume of the engine will decrease, combustion will be incomplete, and this will affect the vehicle's power performance. Summary of the Invention

[0006] This invention addresses the problem in current commercial vehicle intake systems where oil filters and air filters absorb excessive moisture in high humidity environments, affecting their service life and causing incomplete combustion in the engine. It provides a commercial vehicle intake assembly with better water removal performance.

[0007] To solve the above problems, the technical solution adopted by the present invention is a commercial vehicle air intake assembly, including an air intake body, the air intake body being L-shaped, including a horizontal section and a vertical section, wherein a water screening component is provided in the horizontal section, and a water filtering component and a vortex component are provided in the vertical section.

[0008] The water sieving assembly includes a water sieving plate and a water collecting hopper. The water collecting hopper is vertically connected, and the water sieving plate is located at the top opening of the water collecting hopper. The water sieving plate is inclined upward along the air intake direction and has multiple sieve holes. The bottom of the water collecting hopper is connected to the outside of the air intake duct body.

[0009] The water filter assembly includes multiple stacked blades with the outer edges of the blades tilted downwards. The outline area of ​​each blade gradually increases from top to bottom. A first water collection tank is provided below the water filter assembly, and the first water collection tank is connected to the outside of the main body of the air intake. The swirl assembly is located below the water filter assembly, and a second water collection tank is also provided below the swirl assembly. The second water collection tank is connected to the outside of the main body of the air intake through the first water collection tank.

[0010] This solution uses a water-screening component to cause water droplets in the intake air to collide with and adhere to a water-screening plate, forming a water film. This water film moves along the inclined angle of the water-screening plate under the influence of airflow and enters the water collection hopper through the screen holes, exiting the main body of the intake duct. The separation effect of the water-screening component is significant when the airflow velocity is low. The water-filtering component causes residual moisture in the air to collide with and adhere to the blades under the influence of gravity and airflow, flowing from top to bottom along the edge angle of the blades into the first water collection tank, exiting the main body of the intake duct. The vortex component causes the airflow to swirl, and residual moisture in the air is thrown into the second water collection tank by centrifugal force, exiting the main body of the intake duct. The separation effect of the vortex component is significant when the airflow velocity is high. This solution makes full use of airflow patterns, gradually separating moisture from the air through a three-stage water removal component in the intake assembly. It can effectively remove water regardless of airflow speed, while also improving the removal capacity of dust and other impurities. This greatly reduces the moisture and dust content of the air entering the oil filter and air filter, ensuring the service life of the oil filter and air filter and the combustion performance of the engine.

[0011] Preferably, at least two water screening components are provided, arranged vertically. The water screening plate of the lower water screening component has a water inlet, which is connected to the lower end of the water collection hopper of the adjacent upper water screening component. The lower end of the water collection hopper of the lowest water screening component passes through the outer wall of the air intake duct body. By setting up multiple water screening components and forming an air intake channel between adjacent water screening components, the airflow uniformity of the horizontal section cross-section of the air intake duct is improved, ensuring low air intake resistance.

[0012] Preferably, the water-screening plate is curved into an arc shape along the air intake direction. A guide plate is provided along the lower edge of the water-screening plate, and the lower edge of the guide plate is not higher than the upper edge of the water-screening plate in the adjacent water-screening assembly below. The air intake of the main body of the air intake duct is provided with an air intake grille, which includes a frame. The outline of the frame is adapted to the air intake. From top to bottom, an upper baffle, a louver, and a lower baffle are arranged in the frame. The lower edge of the upper baffle is not higher than the upper edge of the uppermost water-screening plate, and the upper edge of the lower baffle is not lower than the lower edge of the lowermost water-screening plate. The arc-shaped design of the water-screening plate allows the airflow to rise along the arc surface of the plate, ensuring low air intake resistance and facilitating the flow and collection of water droplets on the plate. The design of the guide plate and the edge position of the air intake grille ensures the water-screening area of ​​the plate in the air intake direction, stabilizing the water removal efficiency. The water removal effect of the water-screening plate is significant at low airflow speeds.

[0013] Preferably, the screen holes are straight grooves, horizontally arranged along their length. A raised edge is provided along the upper edge of each screen hole, protruding towards the windward side of the screen plate. Multiple rows of screen holes are arranged along the length of the screen plate, with adjacent rows staggered. The length of each screen hole is greater than the distance between adjacent holes in each row. The raised edge along the upper edge of the screen holes intercepts the water film in the air inlet direction, ensuring that the water film can smoothly enter the screen holes. The staggered arrangement of the screen holes ensures that the vertical direction of the water film flow is covered by screen holes, allowing most of the water adhering to the screen plate to enter the screen holes.

[0014] Preferably, the water collecting hopper includes an internally connected water collecting section and a water drawing section. The longitudinal section of the bottom of the water collecting section, perpendicular to the air intake direction, is V-shaped. The cross-section of the water drawing section, parallel to the air intake direction, is slot-shaped and connected to the V-shaped bottom of the water collecting section. The length of the slot in the water drawing section is set along the air intake direction, gradually decreasing downwards in the vertical direction. The windward side of the water drawing section slopes inwards towards the air intake duct. The V-shaped bottom of the water collecting section allows the water collected in the water collecting section to quickly converge and flow into the water drawing section and then out of the air intake duct. The water drawing section is a flat tube with a hollow interior, and its plane is parallel to the airflow direction, resulting in a smaller obstruction area in the air intake direction, thus reducing air intake resistance and making air intake smoother.

[0015] Preferably, the lower end of the vertical section is provided with a base, the base is hollow inside and open at the top and bottom, a support frame is embedded in the base, the vortex assembly is installed on the support frame, an air inlet pipe is provided on the bottom plate of the base corresponding to the position of the vortex assembly, the air inlet pipe passes through the bottom plate of the base, a surrounding plate is provided on the outer edge of the bottom plate, a first water collection trough is formed between the outer wall of the surrounding plate and the inner wall of the vertical section of the air inlet body, a drain pipe is provided at the lowest horizontal position of the first water collection trough, the drain pipe connects to the outside of the air inlet body; a second water collection trough is formed between the inner wall of the surrounding plate and the outer wall of the air inlet pipe, the second water collection trough is connected to the first water collection trough, and the bottom of the second water collection trough is higher than the bottom of the first water collection trough; a mounting seat is also provided below the lowest layer of blades in the water filter assembly, the mounting seat is fastened to the top of the side wall of the base, and a diversion cover is provided above the uppermost layer of blades.

[0016] Preferably, the base has an elongated oval hole cross-section, and at least two swirl components are provided. Multiple swirl components are arranged side by side along the length of the elongated oval hole. The number of air intake pipes corresponds to the number of swirl components, and a partition is provided between adjacent air intake pipes.

[0017] Preferably, the swirl assembly includes a mounting ring, a swirl tube mounted on a support frame, the mounting ring being embedded in the swirl tube, a guide cone at the axis of the mounting ring, and multiple swirl vanes arranged circumferentially between the mounting ring and the guide cone. The guide cone accelerates the airflow diffusion outwards, and when the airflow velocity is high, the separation effect of the swirl assembly is significant.

[0018] Preferably, the cross-sectional area of ​​the vertical section is smaller than that of the horizontal section. The opposite sidewalls of the vertical section are recessed into the interior of the intake duct body to form a recessed portion. The length direction of the recessed portion is vertical, and the top surfaces of the recessed portions are in contact with each other. After the airflow enters the vertical section, its velocity increases, providing a flow rate guarantee for the subsequent swirl assembly to remove water. The top surfaces of the recessed portions are connected, strengthening the intake duct panel and thus reducing the noise generated by the intake duct panel. At the same time, the cross-section of the recessed portion is I-shaped, which divides and sorts the turbulent airflow entering the vertical section, improving the airflow uniformity of the vertical section cross-section and ensuring low intake resistance. In addition, it increases the inner surface area of ​​the vertical section, i.e., the surface area for water adhesion, enabling the intake duct body itself to absorb more water.

[0019] On the other hand, the present invention also provides a commercial vehicle, including an intake system, the intake system including an oil filter, an air filter and the above-mentioned commercial vehicle intake duct assembly, the air outlet of the main body of the intake duct is connected to the air inlet of the oil filter, the air outlet of the oil filter is connected to the air inlet of the air filter, and the air outlet of the air filter is connected to the engine intake of the commercial vehicle.

[0020] As can be seen from the above technical solutions, the advantages of this invention are as follows: By setting an intake grille and a three-stage water removal assembly in the L-shaped intake duct body, the water and dust removal effect of the intake duct assembly is greatly improved: Through the water sieving assembly, water droplets in the intake air collide with and adhere to the water sieving plate to form a water film. Driven by the airflow, the water film moves along the inclined angle of the water sieving plate and enters the water collection hopper through the sieve holes, then is discharged outside the intake duct body. The separation effect of the water sieving assembly is significant when the airflow velocity is low. Through the water filtering assembly, residual moisture in the air collides with and adheres to the diverter cover and blades under the action of gravity and airflow, and flows from top to bottom along the edge angle of the diverter cover and blades into the first water collection trough, then is discharged outside the intake duct body. Through the swirling assembly, the airflow... The swirling motion causes residual moisture in the air to flow into the second water collection tank along the inner wall of the swirling cylinder under centrifugal force, and then discharge it outside the main body of the intake duct. When the airflow velocity is high, the separation effect of the swirling component is obvious. This solution makes full use of the airflow form and gradually separates the moisture in the air through the structural design of the intake grille, the three-stage water removal component, and the main body of the intake duct. It can effectively remove water regardless of the airflow velocity, and at the same time improves the removal capacity of dust and other impurities. This greatly reduces the moisture and dust content of the air entering the oil filter and air filter, ensuring the service life of the oil filter and air filter and the combustion performance of the engine. At the same time, the commercial vehicle provided by this invention has the above-mentioned intake duct assembly, which ensures clean and dry engine intake air and better power performance. Attached Figure Description

[0021] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of Embodiment 1 of the present invention.

[0023] Figure 2 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention.

[0024] Figure 3 This is a schematic diagram of the air intake grille in Embodiment 1 of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the first water screening component in Embodiment 1 of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the second water screening component in Embodiment 1 of the present invention.

[0027] Figure 6 This is a schematic diagram of the third water screening component in Embodiment 1 of the present invention.

[0028] Figure 7 This is a schematic diagram of the water filtration assembly in Embodiment 1 of the present invention.

[0029] Figure 8 This is a schematic diagram of the swirl assembly in Embodiment 1 of the present invention.

[0030] Figure 9 This is a schematic diagram of the support frame in Embodiment 1 of the present invention.

[0031] Figure 10 This is a schematic diagram of the base structure in Embodiment 1 of the present invention.

[0032] In the diagram: 1. Main body of the air intake duct, 1-1. Air inlet, 1-2. Recess, 1-3. Drain pipe, 1-4. Air outlet, 1-5. Connecting plate, 2. Air intake grille, 2-1. Upper baffle, 2-2. Frame, 2-3. Leaf, 2-4. Lower baffle, 3. First water screening assembly, 3-1. First water screening plate, 3-2. First water collecting hopper, 3-3. First guide plate, 4. Second water screening assembly, 4-1. Second water screening plate, 4-2. Second water collecting hopper, 4-3. Second guide plate, 5. Third water screening assembly, 5-1. Third water screening plate, 5-2. Third water collecting hopper, 5 -3. First duckbill valve, 6. Water filter assembly, 6-1. Diverter cover, 6-2. Blade, 6-3. Mounting base, 64. Buckle, 7. Swirl assembly, 7-1. Guide cone, 7-2. Swirl vane, 7-3. Mounting ring, 7-4. Anti-rotation block, 8. Support frame, 8-1. Support panel, 8-2. Clamping plate, 8-3. Anti-rotation groove, 8-4. Limiting block, 8-5. Swirl cylinder, 8-6. Notch, 9. Base, 9-1. Enclosure, 9-2. Air inlet pipe, 9-3. Bottom plate, 9-4. Partition, 9-5. Drain outlet, 9-6. Slot, 10. Second duckbill valve. Detailed Implementation

[0033] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0034] Example 1

[0035] like Figure 1 , 2 As shown, a commercial vehicle air intake assembly includes an air intake body 1, which is L-shaped and includes a horizontal section and a vertical section. The left end of the horizontal section is an air inlet 1-1, and the lower end of the vertical section is an air outlet 1-4. An air intake grille 2 is installed at the air inlet. A water sieving component is installed inside the air inlet, and a water filter component 6 and a vortex component 7 are installed inside the air outlet. The water filter component 6 is located above the vortex component 7.

[0036] Specifically, at least two water screening components are provided. Taking this embodiment as an example, such as... Figure 1As shown, in this embodiment, three water screening components are provided, arranged from top to bottom as the first water screening component 3, the second water screening component 4, and the third water screening component 5. The three water screening components have basically the same structure, each including a water screening plate and a water collecting hopper. The water collecting hopper is vertically connected and includes an internally connected water collecting part and a water drawing part. The water collecting part is an arc-shaped water tank structure. The longitudinal section of the bottom of the water collecting part perpendicular to the air intake direction is a V-shaped surface with a central depression. The lowest point of the central depression of the bottom of the water collecting part is connected to the water drawing part to ensure that the water collected by the water collecting part can be completely and quickly gathered and flow into the water drawing part. The water drawing part is connected downward to the water collecting hopper of the adjacent water screening component below. The water collecting hoppers of multiple water screening components are interconnected vertically. The water drawing part of the bottommost water collecting hopper is connected to the outside of the air intake duct body 1. The water screening plate is a quadrilateral surface that is spatially curved into an arc. The screen plate is installed at the upper end of the water collection section. The lower end of the screen plate is tangent to the air intake direction, and the upper end of the screen plate is inclined upward along the airflow direction. The short side of the screen plate is straight and horizontally perpendicular to the air intake direction, while the long side is arc-shaped and perpendicular to the short side. The arc surface of the screen plate is concave towards the air intake channel along the air intake direction, allowing the airflow to climb along the arc surface of the screen plate, ensuring low air intake resistance and facilitating the flow and collection of water droplets on the screen plate. The arc surface of the screen plate has multiple rows of screen holes along the long side. Each row of screen holes includes multiple screen holes arranged along the short side of the screen plate. The screen holes are straight grooves, and the length of the straight grooves is parallel to the short side of the screen plate. The upper edge of the screen holes has a convex edge that protrudes towards the windward side of the screen plate. The screen holes in adjacent rows of screen holes are staggered, and the length of the screen holes is greater than the distance between adjacent screen holes in each row. A raised edge is provided on the upper edge of the screen holes to intercept the water film in the air inlet direction, ensuring that the water film can smoothly enter the screen holes; the staggered arrangement of the screen holes ensures that the vertical direction of the water film flow is covered by screen holes, so that most of the water adhering to the screen plate can enter the screen holes.

[0037] Based on the common structure of the above-mentioned water screening components, the differences between the three water screening components are as follows: Figure 4 , Figure 5 As shown, the cross-section of the water intake section of the first water collector 3-2 and the second water collector 4-2 at any position parallel to the air intake direction is slotted. The length of the slot is set along the air intake direction, and the windward side of the slot gradually shortens downwards and inwards along the vertical direction. That is, the windward side of the water intake section is inclined towards the interior of the air intake duct body, and the leeward side is set vertically. The windward side forms a certain windward angle with the air intake direction. Moreover, the water intake section of the first water collector 3-2 and the second water collector 4-2 is a flat tube with a hollow interior. Its plane is parallel to the air intake direction, which makes the obstruction area in the air intake direction smaller, and the air intake resistance is smaller, making the air intake smoother. Correspondingly, the second water sieve plate 4-1 and the third water sieve plate 5-1 are provided with water inlets. The lower end of the water intake section of the first water collector 3-2 is connected to the water inlet on the second water sieve plate 4-1, and the lower end of the water intake section of the second water collector 4-2 is connected to the water inlet on the third water sieve plate 5-1. At the same time, as Figure 2, Figure 6 As shown, the water intake part of the third water collection hopper 5-2 is a section of round pipe. A through hole is opened on the bottom wall of the horizontal section of the air intake body 1. The lower end of the round pipe extends through the through hole to the bottom of the horizontal section of the air intake body 1. A first duckbill valve 5-3 is installed at the lower end of the round pipe to discharge the water collected by the water screening component to the outside of the air intake body 1.

[0038] Furthermore, a first guide plate 3-3 is provided at the lower edge of the first water screening plate 3-1. The first guide plate 3-3 can be installed on the first water screening plate 3-1 or the first water collecting hopper 3-2. A second guide plate 4-3 is also provided at the lower edge of the second water screening plate 4-1. The second guide plate 4-3 can be installed on the second water screening plate 4-1 or the second water collecting hopper 4-2. The first guide plate 3-3 and the second guide plate 4-3 include a connecting part and a flipping part that are hinged to each other. The hinge axis between the two is parallel to the short side of the water screening plate.

[0039] The air intake grille 2 is an integrally formed structure, including a frame 2-2. The frame 2-2 is connected to the main body 1 of the air intake. The outline of the frame 2-2 is adapted to the air intake 1-1, and the inner side is in contact with the windward end of the water sieving component. The frame 2-2 is provided with an upper baffle 2-1, a leaf 2-3 and a lower baffle 2-4 from top to bottom. The leaf is composed of several narrow and long blades arranged obliquely. Air carrying water, leaves and other foreign objects passes through the air intake grille, while larger foreign objects and most of the water are blocked outside the air intake by the leaf.

[0040] In the vertical direction, such as Figure 2 As shown, after the three water screening components are combined, the horizontal position of the lower edge of the first guide plate 3-3 is not higher than the upper edge of the second water screening plate 4-1, and the horizontal position of the lower edge of the second guide plate 4-3 is not higher than the upper edge of the third water screening plate 5-1. That is, when air enters, under the impact of the airflow, the flipping part swings with the airflow direction and forms a certain angle α with the airflow. The lower limit position of the flipping part is not higher than the highest point of the adjacent water screening plate below it. The flipping part can adaptively adjust the angle α according to the strength of the airflow impact force to achieve the best effect: when the airflow impact force is weak, the angle α is larger, the airflow and the water screening plate are in full contact, and the separation effect is obvious; when the airflow impact force is strong, the angle α is smaller, which satisfies the air intake volume while ensuring a small air intake resistance. At the same time, the lower edge of the upper baffle 2-1 of the air intake grille 2 is not higher than the upper edge of the first water screening plate, and the upper edge of the lower baffle 2-4 is not lower than the lower edge of the third water screening plate. By designing the guide vane and the edge of the air intake grille and the water sieve plate, the water sieve plate has a large sieve area in the air intake direction, so that the air entering the air intake can collide and contact the water sieve plate as much as possible to fully sieve water.

[0041] like Figure 2As shown, the water screening components are arranged from top to bottom, dividing the horizontal air intake passage of the intake manifold into three horizontal air intake channels. The first horizontal air intake channel is located between the upper inner wall of the air inlet and the first water screening component; the second horizontal air intake channel is located between the first and second water screening components; and the third horizontal air intake channel is located between the second and third water screening components. Due to the influence of engine back pressure, the airflow gradually increases from top to bottom in the vertical section of the horizontal air intake passage. The more impurities are entrained, the greater the flow resistance. That is, the horizontal air intake channels closer to the vertical section of the intake manifold have higher airflow rates. The greater the airflow, the more impurities are entrained, and the greater the flow resistance. Therefore, the airflow cross-sections on the inlet side of the first, second, and third horizontal air intake channels are arranged to increase sequentially, and the windward area of ​​the water sieving plate of the corresponding water sieving assembly is arranged to increase sequentially. The airflow cross-section on the inlet side of the first horizontal air intake channel is larger than the airflow cross-section on the outlet side, the airflow cross-section on the inlet side of the second horizontal air intake channel is basically the same as the airflow cross-section on the outlet side, and the airflow cross-section on the inlet side of the third horizontal air intake channel is smaller than the airflow cross-section on the outlet side, so as to improve the airflow uniformity of the horizontal air intake channels and reduce the intake resistance.

[0042] The water-sieving principle of the water-sieving assembly is as follows: Airflow carrying water, dust, and other foreign matter passes through the air intake grille and impacts the concave surface of the water-sieving plate. Water in the airflow condenses and adheres to the water-sieving plate, forming a water film. The airflow rises with the water-sieving plate until it crosses the upper edge and enters the air intake channel. Simultaneously, some of the water film on the water-sieving plate is blown up by the airflow and rises along the plate, falling through the screen holes into the water collection hopper and exiting the air intake channel. Other water film slides down the water-sieving plate and exits the air intake channel through the air intake, or falls onto the lower water-sieving plate, passing through the screen holes into the lower water collection hopper, and finally exiting at the first duckbill valve. The water removal effect is particularly noticeable when the airflow speed is relatively slow.

[0043] like Figure 1 , 2 as well as Figure 7-10 As shown, a base 9 is provided inside the lower vertical section of the main body 1 of the air intake. The base 9 includes a base plate 9-3, and a surrounding plate 9-1 is provided on the outer edge of the base plate 9-3. Thus, the base 9 forms a box structure with a hollow interior and open upper and lower ends. The water filter assembly 6 and the swirl assembly 7 are both installed on the base 9. Specifically, as shown... Figure 7As shown, the water filtration assembly 6 includes a diversion cover 6-1, multiple blades 6-2, and a mounting base 6-3 arranged sequentially from top to bottom. The multiple blades 6-2 are stacked vertically. The diversion cover 6-1 and the uppermost blade 6-2, adjacent blades, and the mounting base 6-3 and the lowermost blade are connected by vertical ribs to maintain a certain vertical gap in the circumference of each other to allow airflow to pass through. The blades 6-2 have an elongated oval outline, with the outer edges of the blades sloping downwards in an umbrella shape, and the center of the blades is hollow. The hollowed-out areas in the center of the multiple stacked blades form a continuous airflow channel that communicates with the vortex assembly 7. The diversion cover 6-1 is conical or ridge-shaped and is placed above the uppermost blade, covering the hollowed-out area in the center of the uppermost blade. The outer edge of the diversion cover 6-1 is also sloping downwards in an umbrella shape. The outline area of ​​the diversion cover 6-1 and each blade gradually increases from top to bottom, with no gaps in the vertical projection, forming a tower-like structure that can quickly and evenly diffuse the airflow from above to all sides. Mounting base 6-3 is positioned below the lowest blade. A buckle 64 is provided along the circumference of mounting base 6-3. The outer contour of the enclosure plate 9-1 matches the inner contour of mounting base 6-3. A slot 9-6 corresponding to the buckle 64 is opened at the top of enclosure plate 9-1. Mounting base 6-3 is nested from top to bottom outside the top of enclosure plate 9-1, and mounting base 6-3 and enclosure plate 9-1 are fastened together. A first water collection trough is formed between the outer wall of enclosure plate 9-1 and the inner wall of the vertical section of the air intake duct body 1. A drain pipe 1-3 is provided at the lowest horizontal position of the first water collection trough, and a second duckbill valve 10 is installed on the drain pipe 1-3 for draining water from the first water collection trough.

[0044] like Figure 1 , Figure 2 As shown, the vortex assembly 7 is installed in the support frame 8, and the support frame 8 is installed in the base 9. Both the vortex assembly 7 and the support frame 8 are located below the water filter assembly 6. Specifically, as... Figure 9As shown, the support frame 8 includes a support panel 8-1. The outer contour of the support panel 8-1 is adapted to the inner wall contour of the mounting base 6-3. A retaining plate 8-2 is provided circumferentially on the lower end face of the support panel 8-1. The outer wall contour of the retaining plate 8-2 is adapted to the inner wall contour of the surrounding plate 9-1. The support frame 8 is installed in the base 9. In the vertical direction, the outer edge of the support panel 8-1 overlaps between the mounting base 6-3 and the surrounding plate 9-1. In the inward and outward direction, the outer wall of the retaining plate 8-2 is in contact with the inner wall of the surrounding plate 9-1. A circular hole is opened on the support panel 8-1. A vortex tube 8-5 is provided below the circular hole. The diameter of the circular hole is smaller than the diameter of the vortex tube 8-5. Reinforcing ribs are provided between the support panel 8-1, the retaining plate 8-2, and the vortex tube 8-5. The swirl assembly 7 includes a mounting ring 7-3. A limiting block 8-4 is circumferentially located on the inner wall of the swirl tube 8-5. The swirl assembly 7 is nested into the swirl tube 8-5 from bottom to top. The upper edge of the mounting ring 7-3 abuts against the inner edge of the circular hole in the support panel 8-1, and the lower edge of the mounting ring 7-3 abuts against the limiting block 8-4, restricting axial movement of the swirl assembly. Simultaneously, an anti-rotation block 7-4 is located on the upper edge of the mounting ring 7-3, and an anti-rotation groove 8-3 is located on the inner edge of the circular hole in the support panel 8-1. After the mounting ring 7-3 is installed in place, the anti-rotation block 7-4 is embedded in the anti-rotation groove 8-3, restricting axial rotation of the swirl assembly. The swirl assembly also includes a guide cone 7-1, located at the axial center of the mounting ring 7-3. The guide cone 7-1 is narrower at the top and wider at the bottom, with a closed upper port and an open lower port, resembling a bullet shape, accelerating the uniform diffusion of the upward airflow in all directions. Multiple swirl vanes 7-2 are circumferentially arranged between the mounting ring 7-3 and the guide cone 7-1. In the height direction, the upper edge of the mounting ring 7-3 is at the same height as the upper edge of the swirl vane 7-2, and the lower edge of the mounting ring 7-3 is higher than the lower edge of the swirl vane 7-2. That is, the lower half of the swirl vane 7-2 is not covered by the mounting ring 7-3. An air inlet pipe 9-2 is provided on the base plate 9-3 of the base 9. The air inlet pipe 9-2 is directly opposite the swirl cylinder 8-5. The inner diameter of the air inlet pipe 9-2 is smaller than the inner diameter of the swirl cylinder 8-5 in the same position. The top of the air inlet pipe 9-2 is higher than the base plate 9-3 and the lower end extends to the bottom of the base plate 9-3, ensuring that the water separated by the swirl assembly 7 flows into the water collection tank along the inner wall of the swirl cylinder 8-5, and preventing the separated water from entering the air inlet pipe 9-2 with the airflow.

[0045] Furthermore, in this embodiment, two swirl components are provided. The cross-section of the base 9 and the support frame 8 is "racetrack" shaped, i.e., elongated oval hole. The two swirl components are arranged side by side along the length of the elongated oval hole. The base 9 is provided with two air inlet pipes 9-2. A partition 9-4 is provided between the two air inlet pipes 9-2. The upper end face of the partition 9-4 is not lower than the lower end face of the swirl tube 8-5 to prevent the airflow of the two swirl components from interfering with each other. The bottom edge of the clamping plate 8-2 of the support frame 8 is provided with a notch 8-6. The partition 9-4 is inserted into the notch 8-6. The surrounding plate 9-1, the air inlet pipe 9-2, the bottom plate 9-3, and the partition 9-4 together form a second water collection tank. The bottom height of the second water collection tank is higher than the bottom height of the first water collection tank. The bottom of the surrounding plate 9-1 has a drain outlet 9-5. The drain outlet 9-5 is located on both sides of the partition 9-4. The drain outlet 9-5 is used to let the water in the second water collection tank flow into the first water collection tank.

[0046] The cross-sectional area of ​​the vertical section of the main body 1 of the air intake is smaller than that of the horizontal section, increasing the airflow velocity and providing a flow rate guarantee for the subsequent cyclone assembly to remove water, thus stabilizing the water removal efficiency of the cyclone assembly. Meanwhile, as... Figure 1 As shown, a recessed portion 1-2 is formed by a local indentation at the center line of the symmetrical panel of the vertical section into the interior of the main body of the air intake duct 1. The length direction of the recessed portion 1-2 is along the vertical direction, and the top surfaces of the recessed portions are in contact with each other and connected together. The cross-section is I-shaped, which strengthens the strength of the main body panel of the air intake duct and thus reduces the noise generated by the main body panel of the air intake duct. At the same time, the recessed portion divides the vertical section into two vertical air intake channels, which divides and sorts the turbulent airflow entering the vertical section, improves the airflow uniformity of the cross-section of the vertical section, and ensures a smaller intake resistance. At the same time, it increases the water film adhesion area on the inner wall of the vertical section, which allows the main body of the air intake duct itself to absorb more moisture. Furthermore, the lower end of the recessed portion 1-2 is connected to the inner wall of the vertical section by a slope transition, which facilitates the flow of water droplets adsorbed on the inner surface of the recessed portion 1-2 into the first water collection tank.

[0047] The working principle of the water filtration assembly and the vortex assembly is as follows: The airflow from the upper part of the vertical section of the main body 1 of the air intake duct impacts the splitter cover and multi-layer blades vertically downwards. The moisture in the airflow condenses on the upper surface of the splitter cover and blades and flows from top to bottom along the edge angle of the splitter cover and blades into the first water collection tank. At the same time, the airflow rapidly and evenly diffuses in all directions along the edge angle of the splitter cover and blades. The diffused airflow is obstructed and reverses, passing through the height gaps between the splitter cover and the uppermost blade, between adjacent blades, and between the mounting base and the lowermost blade, and enters the central hollow area, reaching the vortex assembly below. When the airflow carrying residual moisture passes through the vortex assembly, the guide cone 7-1 accelerates the airflow to diffuse radially along the vortex blades. The airflow rotates at high speed from top to bottom. Under centrifugal force, the moisture and airflow gradually separate and flow into the second water collection tank along the inner wall of the vortex cylinder. The water collected in the second water collection tank flows into the first water collection tank through the drain port 9-5. At the same time, the airflow after moisture separation directly enters the air intake pipe along the axial direction of the vortex cylinder. Ultimately, the water separated by the filtration and cyclone components collects in the first water collection tank and flows into the drain pipe 1-3, where it is discharged to the outside of the air intake through the second duckbill valve 10. This achieves the effect of separating water and air. The greater the airflow velocity, the more obvious the separation effect of the cyclone component.

[0048] Example 2

[0049] Based on the commercial vehicle air intake assembly provided in Embodiment 1, this embodiment further provides a commercial vehicle. The commercial vehicle includes a frame, on which a vehicle cab, an engine, and an air intake system are mounted. The air intake system includes an oil filter, an air filter, and the commercial vehicle air intake assembly provided in Embodiment 1. The air outlet of the main body of the air intake is connected to the air inlet of the oil filter, the air outlet of the oil filter is connected to the air inlet of the air filter, and the air outlet of the air filter is connected to the air inlet of the commercial vehicle's engine. The air intake system is located behind the cab. Both the oil filter and the air filter are mounted on the frame. The air intake assembly is mounted on the rear panel of the cab. The outer wall of the main body of the air intake 1 is provided with connecting plates 1-5, which are fixedly connected to the rear panel of the cab. The air intake direction of the air inlet of the main body of the air intake is horizontal and perpendicular to the vehicle's driving direction.

[0050] As can be seen from the above embodiments, the beneficial effects of the present invention are as follows: by setting an air intake grille and a three-stage water removal assembly in the L-shaped air intake duct body, the water and dust removal effect of the air intake duct assembly is greatly improved: the air intake grille blocks larger foreign objects such as leaves and some water from entering the air intake duct body; the water sieving assembly draws in water droplets from the air, which impact and adhere to the water sieving plate to form a water film. The water film moves along the inclined angle of the water sieving plate under the drive of the airflow and enters the water collection hopper through the screen holes, and is discharged outside the air intake duct body through the first duckbill valve. When the airflow speed is low, the separation effect of the water sieving assembly is obvious; The water filtration component allows residual moisture in the air to impact and adhere to the splitter cover and blades under the influence of gravity and airflow, flowing from top to bottom along the edges of the splitter cover and blades into the first water collection tank. The vortex component causes the airflow to swirl, and the residual moisture in the air flows into the second water collection tank along the inner wall of the vortex cylinder under centrifugal force. The separation effect of the vortex component is significant when the airflow velocity is high. Finally, the water collected in the second water collection tank flows into the first water collection tank through the drain outlet. The water separated by the water filtration component and the vortex component gathers in the first water collection tank and is discharged to the outside of the intake duct body through the second duckbill valve. This solution fully utilizes airflow patterns, employing a structural design that includes an air intake grille, a three-stage water removal assembly, and the main intake duct body to gradually separate moisture from the air. It effectively removes water regardless of airflow speed, while simultaneously improving the removal of dust and other impurities. This significantly reduces the moisture and dust content of the air entering the oil filter and air filter, ensuring their service life and the engine's combustion performance. Furthermore, the commercial vehicle provided by this invention features the aforementioned intake duct assembly, resulting in clean and dry engine intake air and improved power performance.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not 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

1. A commercial vehicle air intake assembly, comprising an air intake body (1), characterized in that, The main body of the air intake (1) is L-shaped, including a horizontal section and a vertical section. The horizontal section is equipped with a water screening component, and the vertical section is equipped with a water filter component (6) and a swirl component (7). The water sieving assembly includes a water sieving plate and a water collecting hopper. The water collecting hopper is vertically connected. The water sieving plate is located at the top opening of the water collecting hopper. The water sieving plate is inclined upward along the air intake direction. The water sieving plate is provided with multiple sieve holes. The bottom of the water collecting hopper is connected to the outside of the air intake duct body (1). The water filter assembly includes multiple stacked blades (6-2), the outer edges of the blades (6-2) are inclined downwards, and the outline area of ​​each blade gradually increases from top to bottom. A first water collection tank is provided below the water filter assembly, and the first water collection tank is connected to the outside of the air intake body (1). The swirl assembly is located below the water filter assembly, and a second water collection tank is also provided below the swirl assembly. The second water collection tank is connected to the outside of the air intake body (1) through the first water collection tank.

2. The commercial vehicle air intake assembly according to claim 1, characterized in that, The water screening assembly is provided with at least two, and multiple water screening assemblies are arranged vertically. The water screening plate of the lower water screening assembly has a water inlet, and the water inlet is connected to the lower end of the water collection bucket of the adjacent upper water screening assembly. The lower end of the water collection bucket of the lowest water screening assembly passes through the outer wall of the air intake body (1).

3. The commercial vehicle air intake assembly according to claim 1, characterized in that, The water sieve plate is curved into an arc shape along the air intake direction. A guide plate is provided on the lower edge of the water sieve plate. The lower edge of the guide plate is not higher than the upper edge of the water sieve plate in the adjacent water sieve assembly below. The air intake (1-1) of the main body of the air intake is provided with an air intake grille (2). The air intake grille (2) includes a frame (2-2). The outline of the frame (2-2) is adapted to the air intake (1-1). The frame (2-2) is provided with an upper baffle (2-1), a louver (2-3) and a lower baffle (2-4) from top to bottom. The lower edge of the upper baffle (2-1) is not higher than the upper edge of the uppermost water sieve plate, and the upper edge of the lower baffle (2-4) is not lower than the lower edge of the lowermost water sieve plate.

4. The commercial vehicle air intake assembly according to claim 1, characterized in that, The sieve holes are straight groove holes, which are set horizontally along their length. The upper edge of the sieve holes has a raised edge that protrudes towards the windward side of the sieve plate. The sieve holes are arranged in multiple rows along the length of the sieve plate, with the sieve holes in adjacent rows staggered. The length of the sieve holes is greater than the distance between adjacent sieve holes in each row.

5. The commercial vehicle air intake assembly according to claim 1, characterized in that, The water collection hopper includes an internally connected water collection section and a water intake section. The longitudinal section of the bottom of the water collection section, perpendicular to the air intake direction, is V-shaped. The cross-section of the water intake section, parallel to the air intake direction, is slot-shaped and connected to the V-shaped bottom of the water collection section. The length of the slot in the water intake section is set along the air intake direction, and the length of the slot gradually shortens downward along the vertical direction. The windward side of the water intake section is inclined towards the inside of the air intake channel.

6. The commercial vehicle air intake assembly according to claim 1, characterized in that, The lower end of the vertical section is provided with a base (9). The base (9) is hollow inside and open at the top and bottom. A support frame (8) is embedded in the base (9). The vortex assembly (7) is installed on the support frame (8). An air inlet pipe (9-2) is provided on the bottom plate of the base (9) corresponding to the position of the vortex assembly (7). The air inlet pipe (9-2) passes through the bottom plate (9-3) of the base (9). A surrounding plate (9-1) is provided on the outer edge of the bottom plate (9-3). A first water collection trough is formed between the outer wall of the surrounding plate (9-1) and the inner wall of the vertical section of the air intake duct body (1). A drain pipe (1-3) is provided at the lowest horizontal position of the first water collection trough. The drain pipe (1-3) is connected to the outside of the air intake duct body (1). A second water collection trough is formed between the inner wall of the surrounding plate (9-1) and the outer wall of the air inlet pipe (9-2). The second water collection trough is connected to the first water collection trough, and the bottom of the second water collection trough is higher than the bottom of the first water collection trough. The water filter assembly (6) has a mounting base (6-3) below the bottommost blade (6-2), which is fastened to the top of the side wall of the base (9), and a diversion cover (6-1) is provided above the topmost blade (6-2).

7. The commercial vehicle air intake assembly according to claim 6, characterized in that, The base (9) has an elongated hole cross section. At least two swirl components are provided. Multiple swirl components are arranged side by side along the length of the elongated hole. The number of air inlet pipes (9-2) corresponds to the number of swirl components. A partition (9-4) is provided between adjacent air inlet pipes (9-2).

8. The commercial vehicle air intake assembly according to claim 6, characterized in that, The swirl assembly includes a mounting ring (7-3), a swirl tube is provided on the support frame, the mounting ring (7-3) is embedded in the swirl tube, a guide cone (7-1) is provided at the axis of the mounting ring (7-3), and multiple swirl vanes (7-2) are provided circumferentially between the mounting ring (7-3) and the guide cone (7-1).

9. The commercial vehicle air intake assembly according to claim 1, characterized in that, The cross-sectional area of ​​the vertical section is smaller than that of the horizontal section. The opposite sidewalls of the vertical section are recessed into the interior of the air intake body (1) to form a recess (1-2). The length direction of the recess (1-2) is along the vertical direction, and the top surfaces of the recess (1-2) are in contact with each other.

10. A commercial vehicle, comprising an intake system, characterized in that, The intake system includes an oil filter, an air filter, and a commercial vehicle intake duct assembly as described in any one of claims 1-9. The air outlet of the main body of the intake duct is connected to the air inlet of the oil filter, the air outlet of the oil filter is connected to the air inlet of the air filter, and the air outlet of the air filter is connected to the engine intake of the commercial vehicle.

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