Waterproof air inlet cap for engine of special vehicle

Abstract

The invention belongs to the technical field of air filters, and particularly relates to a special vehicle engine waterproof air inlet cap which comprises an air-water separation structure arranged on the air inlet face of the air filter air inlet cap, the air-water separation structure is composed of arc-shaped flow guide tiles and arc-shaped water collection tiles, and the flow guide tiles and the water collection tiles are arranged in an inner-outer-layer staggered mode. The arc-shaped openings of the flow guide tile and the water collection tile are opposite, and the axes of the flow guide tile and the water collection tile are parallel; water-containing gas enters from the flow guide tile layer and flows to the water collection tile through the flow guide tile arc-shaped convex face, water is collected at the bottom of the water collection tile arc-shaped concave face and then flows out of the air inlet cap, and gas is guided to flow into the air filter through the two ends of the water collection tile arc-shaped concave face. The air filter can effectively separate water in water-containing gas and prevent the water from entering the air filter, and has low resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of air filters, and in particular relates to a waterproof air intake cap for a special vehicle engine. Background Art

[0002] As the first barrier to protect the engine, the air filter is an important component to prevent dust and impurities from entering the engine. Special vehicles usually need to operate in extreme climatic conditions. In addition to coping with high-dust environments, the air filter also needs to prevent water from entering during heavy rain. Therefore, the waterproof air intake cap is an important part of the air filter. The air intake cap of special vehicles needs to prevent external water from entering the air filter from the air intake port when the vehicle is raining, hit by waves, or when stopping to clean the vehicle.

[0003] Due to the position and size restrictions of the air intake cap of special vehicles, the air intake area of ​​the air intake window is often very small. Special vehicles have high structural resistance due to the small volume of the air intake system. Therefore, in addition to having a waterproof function, the air intake cap should also have the characteristics of low resistance to meet the resistance reduction requirements of the special vehicle air intake system. Summary of the invention

[0004] In view of this, the waterproof air intake cap for a special vehicle engine provided by the present invention can effectively separate moisture from water-containing gas, prevent moisture from entering the air filter, and has low resistance.

[0005] The present invention is achieved through the following technical scheme: a waterproof air intake cap for a special vehicle engine, comprising an air-water separation structure arranged on the air intake surface of the air intake cap of an air filter, the air-water separation structure being composed of a guide tile and a water collecting tile, both of which are arc-shaped, and a plurality of guide tiles and water collecting tiles being staggered in two layers inside and outside, with the guide tiles on the outside and the water collecting tiles on the inside, the arc-shaped openings of the guide tiles and the water collecting tiles being opposite and their axes being parallel; water-containing gas enters from the guide tile layer, and flows toward the water collecting tiles through the arc-shaped convex surface of the guide tile, and the water gathers at the bottom of the arc-shaped concave surface of the water collecting tile and then flows out of the air intake cap, and the gas is guided from both ends of the arc-shaped concave surface of the water collecting tile into the air filter.

[0006] Furthermore, the guide shoe and the water collecting shoe are arc-shaped with the same outer diameter, the curvature of the guide shoe is greater than that of the water collecting shoe, and the angles between the guide shoe axis and the water collecting shoe axis and the horizontal plane are the same, both of which are 0° to 90°.

[0007] Furthermore, the distances between the top of the guide tile and its adjacent water collection tile are the same, and the distances between the bottom of the water collection tile and its adjacent guide tile are the same; the distances between the axes of adjacent guide tiles are the same, and the distances between the axes of adjacent water collection tiles are the same.

[0008] Furthermore, the axis of the guide shoe and the axis of the water collecting shoe are both perpendicular to the horizontal plane.

[0009] Furthermore, the air inlet cap is a frame structure, the top of the air inlet cap is an air inlet surface formed by an air-water separation structure, and the bottom of the air inlet cap is an air outlet surface. The air inlet surface, the air outlet surface and the four side surfaces A, B, C, and D constitute a frame structure. The guide tiles and water collecting tiles are both arranged at an angle, and the downward inclined ends of the guide tiles and the water collecting tiles are fixed on the A side, and the A side is provided with a number of drainage outlets connected to the water collecting tiles; the other ends of the guide tiles and the water collecting tiles are fixed on the B side, and the C side and the D side are provided with a waterproof structure.

[0010] Furthermore, the air inlet cap is cylindrical, and the top and sides of the air inlet cap are both air inlet surfaces formed by an air-water separation structure, the bottom of the air inlet cap is the air outlet surface, the axis of the guide tiles on the side of the air inlet cap is parallel to the axis of the air inlet cap, and the guide tiles and water collecting tiles on the top of the air inlet cap are both inclined; an annular water retaining structure is provided at the bottom of the air inlet cap to prevent water flowing out of the water collecting tiles from being diverted into the air outlet and air surface.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The gas-water separation structure of the present invention can separate the water in the water-containing gas, so that the water flows out of the air intake cap, and prevents the water from entering the air filter through the air intake cap, thereby achieving the waterproof effect of the air intake cap. At the same time, the resistance to gas flow is low, which meets the operation requirements of special vehicles.

[0013] 2. The curvature of the guide tile of the present invention is greater than that of the water collection tile, which increases the contact area with the water-containing gas and improves the water separation efficiency; the axis of the water collection tile is tilted to facilitate the rapid outflow of water.

[0014] 3. The distance between the top of the guide tile of the present invention and its adjacent water collection tile is the same, and the distance between the bottom of the water collection tile and its adjacent guide tile is the same; the distance between the axes of adjacent guide tiles is the same, and the distance between the axes of adjacent water collection tiles is the same. At this time, the water separation effect is the best.

[0015] 4. The cylindrical air inlet cap of the present invention increases the proportion of the air inlet surface, further reducing the resistance to the gas, and is provided with an annular water retaining structure to further prevent the separated water from flowing into the air inlet cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagrams of air-water separation structures, wherein (a) is a schematic diagram of an air-water separation structure consisting of one guide tile and two water-collecting tiles, and (b) is a schematic diagram of an air-water separation structure consisting of several guide tiles and several water-collecting tiles.

[0017] Figure 2 This is the water separation principle diagram of the gas-water separation structure.

[0018] Figure 3 This is a detailed dimensional drawing of the gas-water separation structure.

[0019] Figure 4 Schematic diagram of a flat air inlet cap, wherein (a) is a schematic diagram from one angle, and (b) is a schematic diagram from another angle.

[0020] Figure 5 This is the schematic diagram of water distribution of the flat air inlet cap.

[0021] Figure 6 Schematic diagram of a cylindrical air intake cap.

[0022] Figure 7 The diagram is a schematic diagram of the water distribution principle of a cylindrical air inlet cap, wherein (a) is a schematic diagram of the water distribution principle from a frontal angle, and (b) is a schematic diagram of the water distribution principle from a top-down angle.

[0023] Among them, 1 - guide tile, 2 - water collection tile, 3 - air inlet surface, 4 - drainage port, 5 - air outlet surface, 6 - top air-water separation structure, 7 - side air-water separation structure, 8 - annular water retaining structure, 9 - A side, 10 - B side, 11 - C side, 12 - D side. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The present invention provides a waterproof air intake cap for a special vehicle engine, the air intake cap comprises an air-water separation structure, and the air-water separation structure is arranged on the air intake surface 3 of the air intake cap, such as Figure 1 As shown, the air-water separation structure is composed of a guide tile 1 and a water collecting tile 2, and both the guide tile 1 and the water collecting tile 2 are arc-shaped. A plurality of guide tiles 1 and water collecting tiles 2 are staggered in two layers, with the guide tiles 1 on the outside and the water collecting tiles 2 on the inside. The arc-shaped openings of the guide tiles 1 and the water collecting tiles 2 are opposite and their axes are parallel. That is, the arc-shaped convex surface of the guide tile 1 faces outward (outside the air inlet cap) and is arranged, and the arc-shaped convex surface of the water collecting tile 2 faces inward (inside the air inlet cap) and is arranged; staggered arrangement means that the top of the arc-shaped convex surface of any guide tile 1 does not overlap with the bottom of the arc-shaped convex surface of any water collecting tile 2, and the two ends of the arc of any guide tile 1 are respectively located in the arc-shaped openings of the two adjacent water collecting tiles 2, and the two ends of the arc of any water collecting tile 2 are respectively located in the arc-shaped openings of the two adjacent guide tiles 1. Figure 1 (a) shows an air-water separation structure composed of two guide tiles 1 and a water collecting tile 2 placed alternately; Figure 1 (b) shows an air-water separation structure composed of a plurality of guide tiles 1 and a plurality of water collecting tiles 2 placed alternately. In a specific implementation, different numbers of air-water separation structures can be arranged according to the size of the air intake cap and the air intake volume requirement.

[0026] like Figure 2As shown, the water-containing gas enters from the guide tile layer, flows through the curved convex surface of the guide tile 1 to the water collecting tile 2, and the water remains on the water collecting tile 2. The water is collected at the bottom of the curved concave surface of the water collecting tile 2 and then flows out of the air inlet cap; the gas contacts the bottom of the curved concave surface of the water collecting tile 2 and then turns back, and flows into the air filter from the two ends of the curved concave surface of the water collecting tile 2, wherein part of the gas contacts the curved concave surface of the guide tile 1 after being guided at the two ends of the curved concave surface of the water collecting tile 2, turns back, and then flows into the air filter. In specific implementation, the axis of the guide tile 1 and the axis of the water collecting tile 2 have the same angle with the horizontal plane, and can be set to 0° to 90°, that is, the guide tile 1 and the water collecting tile 2 can be parallel to the horizontal plane, inclined, and perpendicular to the horizontal plane. When the guide tile 1 and the water collecting tile 2 are tilted, the air-water separation structure tilts in the drainage direction, the axis of the water collecting tile 2 is tilted, and the symmetry plane of the water collecting tile where the axis is located is perpendicular to the installation surface of the water collecting tile. The water condensed and collected at the bottom of the arc-shaped concave surface of the water collecting tile 2 flows out of the air inlet cap from high to low along the tilt direction of the water collecting tile 2. The greater the tilt angle, the better the drainage effect; when the axis of the water collecting tile 2 and the axis of the guide tile 1 are perpendicular to the horizontal plane, the drainage effect is best. The air-water separation structure has a good water ingress protection effect when the special vehicle is static. When the special vehicle is in dynamic operation and pumping air from the outside, it can efficiently separate water from the water-containing gas and prevent water from entering, while having the characteristics of low resistance to gas.

[0027] The guide tile 1 and the water collection tile 2 can be circular arc-shaped or elliptical arc-shaped. Preferably, the guide tile 1 and the water collection tile 2 are circular arc-shaped with the same outer diameter, and the curvature of the guide tile 1 is larger than the curvature of the water collection tile 2. The purpose is to increase the surface area of ​​the guide tile 1 covering the water collection tile 2, increase the contact area with the water-containing gas, and improve the water separation efficiency.

[0028] As an improvement, the distance between the top of the arc-shaped convex surface of the guide tile 1 and its adjacent water-collecting tile 2 is the same, and the distance between the bottom of the arc-shaped concave surface of the water-collecting tile 2 and its adjacent guide tile 1 is the same; the distance between the axes of adjacent guide tiles 1 and the distance between the axes of adjacent water-collecting tiles 2 are the same. In this embodiment, the guide tile 1 and the water-collecting tile 2 are both arc-shaped with an outer diameter of 40mm, and the thickness is 1-2mm. The arc of the guide tile 1 is 200°, and the arc of the water-collecting tile 2 is 180°; the axis of the guide tile and the axis of the water-collecting tile are set in the same plane, and the thickness of the air-water separation structure is 40mm at this time; the distance between the axes of adjacent guide tiles 1 and the distance between the axes of adjacent water-collecting tiles 2 are both 55.5mm. After testing, the air-water separation structure has the best water separation effect at this time, and the separation efficiency of water above 30 microns reaches 50%-90%, and meets the low resistance requirements. Specifically: when the flow rate of the water-containing gas is not higher than 5m / s, the corresponding water separation efficiency is 85%-90%; when the flow rate of the water-containing gas is not higher than 10m / s, the corresponding water separation efficiency is 75%-85%, and the corresponding maximum flow resistance is about 800Pa; when the flow rate of the water-containing gas reaches 20m / s, the corresponding water separation efficiency is about 50%, and the corresponding flow resistance is about 2.8k Pa.

[0029] Example 1

[0030] like Figure 4 As shown, the air inlet cap is a frame structure, in this case, a flat air inlet cap. The top of the flat air inlet cap is an air inlet surface 3 formed by an air-water separation structure, and the bottom of the flat air inlet cap is an air outlet surface 5. The air inlet surface 3, the air outlet surface 5, and the four sides A, B, C, and D form a frame structure, and the A side 9 is opposite to the B side 10. The axis of the guide tile 1 of the air inlet surface 3 and the axis of the water collecting tile 2 are both inclined, and the downwardly inclined ends of the guide tile 1 and the water collecting tile 2 are fixed to the A side 9 of the flat air inlet cap, and the A side 9 is provided with a plurality of drain ports 4; the other ends of the guide tile 1 and the water collecting tile 2 are fixed to the B side 10 of the flat air inlet cap, and the C side 11 and the D side 12 can be provided with a waterproof layer. The drain port 4 is connected to the water collecting tile 2 for water to flow out of the flat air inlet cap, and the A side can also be set as a slope along the inclination direction of the air inlet surface 3, or a slope is provided from the bottom of the drain port on the A side 9 to the bottom of the air inlet cap, so as to facilitate faster water outflow.

[0031] like Figure 5 As shown, the water-containing gas flows downward from the guide tile 1 into the flat air intake cap, and the water-containing gas flows to the water collecting tile 2 through the curved convex surface of the guide tile 1. The water is collected at the bottom of the curved concave surface of the water collecting tile 2 and flows out of the flat air intake cap through the drain port 4; the gas contacts the bottom of the curved concave surface of the water collecting tile 2 and then turns back upward, and is guided into the air filter by the two ends of the curved concave surface of the water collecting tile 2, among which part of the gas contacts the curved concave surface of the guide tile 1 after being guided at the two ends of the curved concave surface of the water collecting tile 2, and then turns back downward and flows into the air filter.

[0032] Example 2

[0033] like Figure 6 As shown, the air inlet cap is cylindrical, and in this case it is a cylindrical air inlet cap. The top and side of the cylindrical air inlet cap are both air inlet surfaces 3 formed by the air-water separation structure, and the bottom of the cylindrical air inlet cap is the air outlet surface 5. The axis of the guide tile 1 of the air-water separation structure 7 on the side of the cylindrical air inlet cap is parallel to the axis of the cylindrical air inlet cap; an annular water retaining structure 8 is provided at the bottom of the cylindrical air inlet cap to prevent the water flowing out of the water collecting tile 2 from being diverted into the air outlet surface. The air-water separation structure 6 on the top of the cylindrical air inlet cap is tilted to facilitate faster water outflow.

[0034] The cylindrical air intake cap is provided with a side air-water separation structure 7 and a top air-water separation structure 6, which increases the proportion of the air intake surface 3 compared with the flat air intake cap, further reducing the overall air intake resistance of the air intake cap. Figure 7 As shown, the side air-water separation structure 7 separates the moisture of the water-containing gas entering from the side of the cylindrical air intake cap, and the moisture flows through the water collecting tile 2 of the side air-water separation structure 7, passes through the annular water retaining structure 8, and then flows out of the cylindrical air intake cap; the top air-water separation structure 6 separates the moisture of the water-containing gas entering from the top of the cylindrical air intake cap, and the moisture flows out of the cylindrical air intake cap along the inclined direction through the water collecting tile 2 of the top air-water separation structure 6; the gas flowing in from the side and top of the cylindrical air intake cap is guided by the water collecting tile 2, and then flows into the air filter under the interaction between them and the engine exhaust action.

[0035] The waterproof air inlet cap with an air-water separation structure provided by the present invention can achieve efficient separation of moisture from water-containing gas and prevent moisture from entering the air filter, while having low resistance and meeting the operation requirements of special vehicles.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof air intake cap for a special vehicle engine, characterized in that: The utility model comprises an air-water separation structure arranged on the air inlet surface of the air inlet cap of the air filter, the air-water separation structure is composed of a guide tile and a water collecting tile, both of which are arc-shaped, and a plurality of guide tiles and water collecting tiles are arranged alternately in two layers inside and outside, with the guide tile outside and the water collecting tile inside, and the arc-shaped openings of the guide tile and the water collecting tile facing each other and their axes being parallel; the water-containing gas enters from the guide tile layer, and flows toward the water collecting tile through the arc-shaped convex surface of the guide tile, and the water gathers at the bottom of the arc-shaped concave surface of the water collecting tile and then flows out of the air inlet cap, and the gas is guided from the two ends of the arc-shaped concave surface of the water collecting tile into the air filter.

2. The special vehicle engine waterproof air intake cap according to claim 1, characterized in that: The guide shoe and the water collecting shoe are arc-shaped with the same outer diameter, the curvature of the guide shoe is greater than that of the water collecting shoe, and the angles between the guide shoe axis and the water collecting shoe axis and the horizontal plane are the same, both of which are 0° to 90°.

3. The special vehicle engine waterproof air intake cap according to claim 2, characterized in that: The distances between the top of the guide tile and its adjacent water collection tile are the same, and the distances between the bottom of the water collection tile and its adjacent guide tile are the same; the distances between the axes of adjacent guide tiles are the same, and the distances between the axes of adjacent water collection tiles are the same.

4. The special vehicle engine waterproof air intake cap as claimed in claim 2, characterized in that: The axes of the guide tile and the water collecting tile are both perpendicular to the horizontal plane.

5. The special vehicle engine waterproof air intake cap according to any one of claims 1 to 3, characterized in that: The air inlet cap is a frame structure. The top of the air inlet cap is the air inlet surface formed by the air-water separation structure. The bottom of the air inlet cap is the air outlet surface. The air inlet surface, the air outlet surface and the four sides A, B, C, and D constitute the frame structure. The guide tiles and water collecting tiles are both arranged at an angle. The downward inclined ends of the guide tiles and the water collecting tiles are fixed on the A side. The A side is provided with several drainage outlets connected to the water collecting tiles; the other ends of the guide tiles and the water collecting tiles are fixed on the B side, and the C side and the D side are provided with waterproof structures.

6. The special vehicle engine waterproof air intake cap according to any one of claims 1 to 3, characterized in that: The air intake cap is cylindrical, and the top and sides of the air intake cap are both air intake surfaces composed of air-water separation structures, and the bottom of the air intake cap is the air outlet surface. The axis of the guide tiles on the side of the air intake cap is parallel to the axis of the air intake cap, and the guide tiles and water collecting tiles on the top of the air intake cap are both inclined; an annular water retaining structure is provided at the bottom of the air intake cap to prevent water flowing out of the water collecting tiles from being diverted into the air outlet and air surface.

Images