Special vehicle engine waterproof air inlet cap

Abstract

The present application belongs to the technical field of air cleaner, and particularly relates to a waterproof air inlet cap for special vehicle engine, which comprises a gas-water separation structure arranged on an air inlet surface of the air cleaner air inlet cap, the gas-water separation structure is composed of arc-shaped flow guide tiles and water collecting tiles, the inner and outer layers of the several flow guide tiles and water collecting tiles are staggered, the flow guide tiles are outside and the water collecting tiles are inside, the arc-shaped openings of the flow guide tiles and water collecting tiles are opposite and the axes are parallel; water-containing gas enters from the flow guide tile layer, is guided by the arc-shaped convex surface of the flow guide tile to flow to the water collecting tile, the moisture is collected 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 by the arc-shaped concave surface of the water collecting tile to flow into the air cleaner. The present application can effectively separate the moisture in the water-containing gas, prevent the moisture from entering the air cleaner, and has low resistance.

Description

Technical Field

[0001] This invention belongs to the field of air filter technology, specifically relating to a waterproof air intake cap for special vehicle engines. Background Technology

[0002] As the first line of defense for protecting the engine, the air filter is an important component that prevents dust and impurities from entering the engine. Special vehicles often need to operate in extreme weather conditions. In addition to dealing 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 through the air intake when the vehicle is in rain, when it is being hit by waves, or when the vehicle is parked and being washed.

[0003] Due to the limitations in the position and size of the air intake cap for 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 size of the air intake system. Therefore, in addition to being waterproof, the air intake cap should also have low resistance to meet the drag reduction requirements of the air intake system of special vehicles. Summary of the Invention

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

[0005] This invention is achieved through the following technical solution: a waterproof air intake cap for a special vehicle engine, comprising a gas-water separation structure disposed on the air intake surface of the air filter intake cap. The gas-water separation structure is composed of guide tiles and water collecting tiles, both of which are arc-shaped. Several guide tiles and water collecting tiles are placed in two alternating layers, 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 are opposite each other and their axes are parallel. Water-containing gas enters from the guide tile layer, flows through the arc-shaped convex surface of the guide tile to the water collecting tile, and the water collects at the bottom of the arc-shaped concave surface of the water collecting tile before flowing out of the air intake cap. The gas flows into the air filter through the two ends of the arc-shaped concave surface of the water collecting tile.

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

[0007] Furthermore, the top of the guide tile is equidistant from its adjacent water collecting tile, and the bottom of the water collecting tile is equidistant from its adjacent guide tile; the distance between the axes of adjacent guide tiles is equidistant, and the distance between the axes of adjacent water collecting tiles is equidistant.

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

[0009] Furthermore, the air intake cap has a frame structure. The top of the air intake cap is an air intake surface formed by an air-water separation structure, and the bottom of the air intake cap is an air outlet surface. The air intake surface, the air outlet surface, and the four sides A, B, C, and D constitute the frame structure. The guide tile and the water collection tile are both set at an angle. The downward angled end of the guide tile and the water collection tile is fixed to side A. Side A has several drain outlets connected to the water collection tile. The other end of the guide tile and the water collection tile is fixed to side B. Sides C and D have waterproof structures.

[0010] Furthermore, the air intake cap is cylindrical, with the top and sides of the air intake cap being air intake surfaces composed of air-water separation structures, and the bottom of the air intake cap being the air outlet surface. The axis of the guide tile on the side of the air intake cap is parallel to the axis of the air intake cap, and the guide tile and water collection tile at the top of the air intake cap are both inclined. The bottom of the air intake cap is provided with an annular water-blocking structure to prevent water flowing out of the water collection tile from flowing into and out of the air outlet surface.

[0011] Compared with existing technologies, the beneficial effects of this invention are:

[0012] 1. The gas-water separation structure of this invention can separate the moisture in water-containing gas, allowing the moisture to flow out of the air inlet cap and preventing the moisture from entering the air filter through the air inlet cap, thus achieving the waterproof effect of the air inlet cap. At the same time, it has low resistance to gas flow and meets the requirements of special vehicle operation.

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

[0014] 3. In this invention, the top of the guide tile is equidistant from its adjacent water collecting tile, and the bottom of the water collecting tile is equidistant from its adjacent guide tile; the distance between the axes of adjacent guide tiles is equidistant, and the distance between the axes of adjacent water collecting tiles is equidistant, thus achieving the best water separation effect.

[0015] 4. The cylindrical air intake cap of the present invention increases the proportion of the air intake surface, further reducing the resistance to gas, and is provided with an annular water-blocking structure to further prevent the separated water from flowing into the air intake cap. Attached Figure Description

[0016] Figure 1 The diagram shows a gas-water separation structure, where (a) is a gas-water separation structure consisting of one guide tile and two water collecting tiles, and (b) is a gas-water separation structure consisting of several guide tiles and several water collecting tiles.

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

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

[0019] Figure 4 The diagram shows a flat air intake cap, where (a) is a schematic diagram at one angle and (b) is a schematic diagram at another angle.

[0020] Figure 5 This is a schematic diagram of the water distribution principle of a flat-plate air intake cap.

[0021] Figure 6 This is a schematic diagram of a cylindrical air intake cap.

[0022] Figure 7 The diagram shows the water distribution principle of a cylindrical air intake cap, where (a) is the water distribution principle diagram viewed from the front and (b) is the water distribution principle diagram viewed from the top.

[0023] Among them, 1-flow guide tile, 2-water collection tile, 3-air inlet surface, 4-drain outlet, 5-air outlet surface, 6-top air-water separation structure, 7-side air-water separation structure, 8-ring water-blocking structure, 9-side A, 10-side B, 11-side C, 12-side D. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] This invention provides a waterproof air intake cap for a special vehicle engine. The air intake cap includes an air-water separation structure, which is disposed on the air intake surface 3 of the air intake cap, such as... Figure 1 As shown, the air-water separation structure consists of guide tiles 1 and water collecting tiles 2, both of which are arc-shaped. Several guide tiles 1 and water collecting tiles 2 are placed in alternating layers, with guide tiles 1 on the outside and water collecting tiles 2 on the inside. The arc-shaped openings of guide tiles 1 and water collecting tiles 2 are opposite each other and their axes are parallel. Specifically, the arc-shaped convex surfaces of guide tiles 1 face outwards (outside the air intake cap) and are arranged accordingly, while the arc-shaped convex surfaces of water collecting tiles 2 face inwards (inside the air intake cap). The alternating placement means that the top of the arc-shaped convex surface of any guide tile 1 does not coincide 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 located within the arc-shaped openings of two adjacent water collecting tiles 2, and the two ends of the arc of any water collecting tile 2 are located within the arc-shaped openings of two adjacent guide tiles 1. Figure 1 (a) shows a gas-water separation structure consisting of two guide tiles 1 and one water collecting tile 2 placed alternately; Figure 1 (b) shows an air-water separation structure composed of several guide tiles 1 and several water collecting tiles 2 placed alternately. In specific implementation, different numbers of air-water separation structures can be set according to the size of the air inlet cap and the air intake requirements.

[0026] like Figure 2As shown, water-containing gas enters through the guide tile layer, flows through the arc-shaped convex surface of guide tile 1 to the water collection tile 2, where water remains. The water collects at the bottom of the arc-shaped concave surface of water collection tile 2 and then flows out of the air inlet cap. The gas, after contacting the bottom of the arc-shaped concave surface of water collection tile 2, turns back and flows into the air filter through both ends of the arc-shaped concave surface of water collection tile 2. Some of the gas, after being guided through both ends of the arc-shaped concave surface of water collection tile 2, contacts the arc-shaped concave surface of guide tile 1 and turns back before flowing into the air filter. In specific implementation, the axis of guide tile 1 and the axis of water collection tile 2 have the same angle with the horizontal plane, which can both be set to 0° to 90°. That is, guide tile 1 and water collection tile 2 can be parallel to the horizontal plane, inclined, or perpendicular to the horizontal plane. When the guide tile 1 and water collecting tile 2 are tilted, the air-water separation structure is tilted towards the drainage direction. The axis of water collecting tile 2 is tilted, and the symmetry plane of the water collecting tile where the axis is located is perpendicular to the mounting surface of the water collecting tile. The water condensed and collected at the bottom of the arc-shaped concave surface of water collecting tile 2 flows out of the air inlet cap from high to low along the tilt direction of water collecting tile 2. The larger the tilt angle, the better the drainage effect. The drainage effect is best when the axis of water collecting tile 2 and the axis of guide tile 1 are perpendicular to the horizontal plane. 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 is drawing air from the outside, it efficiently separates water from water-containing gas and prevents water from entering, while having low resistance to gas.

[0027] The guide tile 1 and the water collecting tile 2 can be either circular arc or elliptical arc. Preferably, the guide tile 1 and the water collecting tile 2 are circular arcs with the same outer diameter. The curvature of the guide tile 1 is greater than that of the water collecting tile 2. The purpose is to increase the surface area of ​​the guide tile 1 covering the water collecting tile 2, increase the contact area with 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 adjacent water collecting tiles 2 is also the same. In this embodiment, both the guide tile 1 and the water collecting tile 2 are arc-shaped with an outer diameter of 40mm and a thickness of 1-2mm. The arc of the guide tile 1 is 200°, and the arc of the water collecting tile 2 is 180°. The axes of the guide tiles and the water collecting tiles are set to be on the same plane, at which point the thickness of the air-water separation structure is 40mm; the distance between the axes of adjacent guide tiles 1 and adjacent water collecting tiles 2 is set to be 55.5mm. Experiments show that the air-water separation structure has the best water separation effect at this point, achieving a separation efficiency of 50%-90% for water larger than 30 micrometers, while also meeting the low resistance requirement. Specifically: when the flow velocity of water-containing gas is not higher than 5 m / s, the corresponding water separation efficiency is 85%-90%; when the flow velocity of water-containing gas is not higher than 10 m / s, the corresponding water separation efficiency is 75%-85%, and the corresponding maximum flow resistance is about 800 Pa; when the flow velocity of water-containing gas reaches 20 m / s, the corresponding water separation efficiency is about 50%, and the corresponding flow resistance is about 2.8 kPa.

[0029] Example 1

[0030] like Figure 4 As shown, the air intake cap has a frame structure, specifically a flat air intake cap. The top of the flat air intake cap is the air intake surface 3, formed by an air-water separation structure, and the bottom is the air outlet surface 5. The air intake surface 3, the air outlet surface 5, and four sides (A, B, C, and D) constitute the frame structure, with side A 9 and side B 10 facing each other. The axes of the guide tile 1 and the water collecting tile 2 on the air intake surface 3 are both inclined. The downward-inclined ends of the guide tile 1 and the water collecting tile 2 are fixed to side A 9 of the flat air intake cap, which has several drain outlets 4. The other ends of the guide tile 1 and the water collecting tile 2 are fixed to side B 10 of the flat air intake cap. Side C 11 and side D 12 can have waterproof layers. The drain outlets 4 connect to the water collecting tile 2 to allow water to flow out of the flat air intake cap. Side A can also be sloped along the inclined direction of the air intake surface 3, or sloped from the bottom of the drain outlets on side A 9 to the bottom of the air intake cap, facilitating faster water flow.

[0031] like Figure 5 As shown, water-containing gas flows downward from the guide tile 1 into the flat air inlet cap. The water-containing gas is guided by the arc-shaped convex surface of the guide tile 1 to the water collection tile 2. The water collects at the bottom of the arc-shaped concave surface of the water collection tile 2 and then flows out of the flat air inlet cap through the drain port 4. The gas, after contacting the bottom of the arc-shaped concave surface of the water collection tile 2, turns back upward and flows into the air filter through the two ends of the arc-shaped concave surface of the water collection tile 2. Some of the gas, after being guided by the two ends of the arc-shaped concave surface of the water collection tile 2, contacts the arc-shaped concave surface of the guide tile 1 and turns back downward before flowing 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 sides of the cylindrical air inlet cap are air inlet surfaces 3, which are composed of air-water separation structures. 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. The bottom of the cylindrical air inlet cap is provided with an annular water-blocking structure 8, which is used to prevent water flowing out of the water collection tile 2 from flowing into the air outlet surface. The air-water separation structure 6 at the top of the cylindrical air inlet cap is inclined to facilitate faster water flowout.

[0034] The cylindrical air intake cap features a side air-water separation structure 7 and a top air-water separation structure 6, increasing the proportion of the air intake surface 3 compared to a flat air intake cap, further reducing the overall air intake resistance of the air intake cap. For example... Figure 7 As shown, the side air-water separation structure 7 separates the moisture in the water-containing gas entering from the side of the cylindrical air intake cap. The moisture flows through the water collection tile 2 of the side air-water separation structure 7 and then through the annular water baffle structure 8 before exiting the cylindrical air intake cap. The top air-water separation structure 6 separates the moisture in the water-containing gas entering from the top of the cylindrical air intake cap. The moisture flows through the water collection tile 2 of the top air-water separation structure 6 and then out of the cylindrical air intake cap along its inclined direction. The gas flowing in from the side and top of the cylindrical air intake cap is guided by the water collection tile 2 and then flows into the air filter under their interaction and the engine's air extraction action.

[0035] The waterproof air intake cap with a gas-water separation structure provided by this invention can efficiently separate moisture from water-containing gas, prevent moisture from entering the air filter, and at the same time have low resistance, meeting the requirements of special vehicle operation.

[0036] The above description is merely 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 within the protection scope of the present invention.

Claims

1. A waterproof air intake cap for a special vehicle engine, characterized in that, The air intake cap is cylindrical, with the top and sides of the air intake cap being air intake surfaces formed by air-water separation structures, and the bottom of the air intake cap being the air outlet surface. The air-water separation structure consists of arc-shaped guide tiles and water collecting tiles, with several guide tiles and water collecting tiles placed in two alternating layers, with the guide tiles on the outside and the water collecting tiles on the inside. The arc-shaped openings of the guide tiles and water collecting tiles are opposite each other, and their axes are parallel to each other. The guide vane and the water collecting vane are both arc-shaped with the same outer diameter, but the arc of the guide vane is greater than that of the water collecting vane. The top of the guide vane is equidistant from its adjacent water collecting vane, and the bottom of the water collecting vane is equidistant from its adjacent guide vane. The distance between the axes of adjacent guide vanes is equidistant, and the distance between the axes of adjacent water collecting vanes is equidistant. The axis of the guide tile on the side of the air intake cap is parallel to the axis of the air intake cap, and the guide tile and water collection tile on the top of the air intake cap are both inclined. Water-containing gas enters from the guide tile layer, flows to the water collection tile through the arc-shaped convex surface of the guide tile, and the water collects at the bottom of the arc-shaped concave surface of the water collection tile before flowing out of the air intake cap. The gas flows into the air filter through the two ends of the arc-shaped concave surface of the water collection tile. The bottom of the air intake cap is provided with an annular water-blocking structure to prevent the water flowing out of the water collection tile from flowing into the air outlet surface.

2. The waterproof air intake cap for special vehicle engines as described in claim 1, characterized in that, The axes of the guide tile and the water collecting tile have the same angle with the horizontal plane, which is 0°~90°.

3. The waterproof air intake cap for special vehicle engines as described in claim 2, characterized in that, The axes of the air intake cap's side guide tiles and water collection tiles are both perpendicular to the horizontal plane.

Images