CN211950702U - vehicle air intake - Google Patents

Abstract

The utility model provides an air intake pipe of a vehicle. The air intake duct of the vehicle is arranged to extend in the vehicle length direction, the inner space is a passage for the running air to flow, and the inner space is formed with a zigzag portion, and the zigzag portion has a sink wall that sinks into the inner space; The air inlet of the channel and the upright wall on the downstream side of the sink wall where the cross-sectional area of the channel is reduced. According to the above-mentioned structure of the present invention, even if the flow velocity of the introduced traveling wind is low, the flow velocity of the traveling wind can be accelerated at the recessed wall in the inner space of the intake duct so as to be stronger than the straight force wall. collision, which can effectively separate the moisture contained in the driving wind.

Description

vehicle air intake

technical field

The utility model relates to an air intake pipe of a vehicle for introducing driving wind.

Background technique

Generally, an air intake duct of a vehicle for introducing traveling air is arranged in the front part of the vehicle and extends in the vehicle length direction, and the interior space thereof is a passage for the traveling air to flow. Since the introduced traveling air contains moisture, the air intake pipes of some vehicles have a gas-liquid separation structure capable of separating moisture from the traveling air.

The intake duct having the above-described gas-liquid separation structure is configured such that, for example, a wall portion such as a baffle is provided in the inner space of the intake duct, and moisture contained in the traveling wind is removed by collision of the traveling wind with moisture against the wall portion. It is separated, and the water-separated running air flows to the downstream side of the intake pipe.

However, in the case of using the air intake pipe having the gas-liquid separation structure of the above-mentioned prior art, the gas-liquid separation effect is poor if the traveling speed of the vehicle is low and the flow velocity of the traveling wind is low. The reason for this is that when the flow velocity of the traveling wind is low, the momentum of the moisture contained in the traveling wind is small, and the traveling wind passes over the wall and flows to the intake duct without strongly colliding with the wall such as the baffle. the downstream side of the interior space.

Utility model content

In view of the above-mentioned technical problems, an object of the present invention is to provide an air intake pipe of a vehicle that can effectively separate the gas and liquid of the traveling air even when the flow velocity of the introduced traveling air is low.

As a technical solution to solve the above technical problems, the present invention provides an air intake pipe of a vehicle. The air intake pipe of the vehicle is configured to extend along the vehicle length direction, and its interior space is a passage for the circulation of the driving wind, and it is characterized in that: the interior space is formed with a zigzag part, and the zigzag part has a direction toward the inner space. a sink wall which is recessed on the inside; and an upright wall facing the air inlet of the passage and located on the downstream side of the sink wall, where the cross-sectional area of the passage is reduced.

The advantage of the air intake pipe of the vehicle of the present invention is that the traveling air can be effectively separated into gas and liquid even when the flow velocity of the introduced traveling air is low. Specifically, even if the flow velocity of the traveling wind is low when entering the inner space of the intake duct, when the traveling wind passes through the sink wall where the cross-sectional area of the passage is reduced, the flow velocity of the traveling wind is accelerated, and the accelerated traveling wind will It flows to the upright wall facing the air inlet of the passage and located on the downstream side of the sink wall (downstream side of the flow of the traveling wind). After the wall collides, it falls along the upright wall, thus effectively separating the moisture from the driving wind.

In addition, in the air intake duct of the vehicle of the present invention, preferably, an enlarged area is formed between the upright wall and the recessed wall, and a cross-sectional area of the passage in the enlarged area is larger than that of the recessed wall the cross-sectional area of the channel. With this structure, the traveling wind whose flow velocity is accelerated at the sinking wall is slowed down after reaching the enlarged area, and the flow velocity of the lighter gas is slowed down and the kinetic energy is reduced, and it is easier to pass over the upright wall and flow to the downstream side, but it contains moisture. Due to its heavier mass, the air still has a large momentum in the enlarged area, and can collide strongly with the upright wall to separate the water. Therefore, gas-liquid separation can be performed more efficiently by utilizing the enlarged area.

Further, in the vehicle air intake duct of the present invention, preferably, in the interior space, the recessed wall is located on the upper side in the vehicle height direction, and the upright wall is located on the lower side in the vehicle height direction. With this structure, the traveling wind is accelerated and pressed downward when it flows under the sinking wall located on the upper side, and then goes straight toward the upright wall located on the lower side, so that the moisture contained in the traveling wind can be strongly It collides with the upright wall to further improve the effect of gas-liquid separation.

Description of drawings

FIG. 1 is an enlarged cross-sectional view showing a structure of a front part of a vehicle including an air intake pipe of a vehicle according to an embodiment of the present invention.

2 is a cross-sectional view for explaining a flow path of moisture and air in the traveling wind flowing through the inner space of the intake duct.

Detailed ways

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an enlarged cross-sectional view showing a structure of a front part of a vehicle including an intake duct of a vehicle according to the present embodiment. In FIG. 1 , the direction of arrow FR indicates the front side of the vehicle, and the direction of arrow UP indicates the upper side of the vehicle. As shown in FIG. 1 , in the front part of the vehicle 1 , a traveling air inlet 2 that opens toward the front of the vehicle is formed, and a front grill 3 is attached to the traveling air inlet 2 . The front grill 3 has a plurality of partition walls 3a arranged at intervals in the vehicle vertical direction.

An intake duct (hereinafter simply referred to as an intake duct) 7 of the vehicle of the present embodiment is provided behind the front grill 3 (the side facing the rear of the vehicle), and the intake duct 7 is arranged to extend in the vehicle length direction. The intake pipe 7 has an intake port (an intake port of a passage) 7a and an exhaust port 7b. The air intake 7a is located behind the front grill 3 and opens toward the front side of the vehicle. The exhaust port 7b is connected to the engine through, for example, an air cleaner not shown. As indicated by the hollow arrows in FIG. 1 , the traveling air W enters the intake duct 7 from the traveling air inlet 2 , and then flows into the engine from the exhaust port 7 b .

Usually, the air intake duct 7 is also called a ventilation duct or an air duct. The intake duct 7 is configured, for example, to have a substantially rectangular cross section and to have an inner space 8 . The inner space 8 is a passage through which the traveling air W flows, and the traveling air W flows from the front side of the vehicle 1 to the rear side of the vehicle 1 . A meandering portion 10 that is meandering toward the vehicle upper direction is formed at a substantially middle portion in the vehicle length direction of the intake duct 7 . When the traveling wind W from the upstream side passes through the meandering portion 10 , the wind direction turns obliquely upward of the vehicle, and then flows substantially horizontally toward the rear side of the vehicle.

The meandering portion 10 has an upright wall 10a substantially parallel to the vehicle height direction. This upright wall 10a is a part of the pipe wall 11 of the intake duct 7, and the inner wall of the upright wall 10a faces the front grill 3 (ie, the intake port 7a) in the inner space 8. The upper end portion of the upright wall 10a is connected to the wall portion 12 extending slightly upward toward the exhaust port 7b, and the lower end portion of the upright wall 10a is connected to the lower wall surface 7c extending substantially horizontally toward the traveling air inlet 2 side. .

A recessed wall 15 in which a part of the upper portion of the pipe wall 11 is recessed downward is formed on the side of the meandering portion 10 near the front of the vehicle. The recessed wall 15 is configured to be recessed into the inner space 8 and to be substantially parallel to the horizontally extending lower wall surface 7c. At the sunk wall 15 , the passage cross-sectional area Cs of the inner space 8 is reduced, that is, smaller than the passage sectional area Cn of the interior space 8 at the upstream side of the traveling wind W (the traveling air inlet 2 side) than the sunk wall 15 (Cs<Cn).

Moreover, as shown in FIG. 1, the height of the recessed wall 15 is substantially the same as the upper end position of the upright wall 10a. In the interior space 8, the upright wall 10a is located on the downstream side (the downstream side of the traveling wind) of the recessed wall 15, the upright wall 10a is formed on the pipe wall 11 on the lower side in the vehicle height direction, and the recessed wall 15 is formed in the vehicle height direction. on the pipe wall 11 on the upper side.

In addition, the meandering portion 10 has a wall surface 10b whose inner wall surface facing the interior space 8 is inclined toward the vehicle rear side. That is, the wall surface 10b extends obliquely toward the vehicle rear side from the rear end of the recessed wall 15 in the vehicle length direction. Therefore, in the portion surrounded by the obliquely extending wall surface 10b and the lower wall surface 7c facing the lower wall surface 7c in the vehicle height direction, the value of the channel cross-sectional area Cs at the recessed wall 15 is the smallest value, and the value of the passage cross-sectional area Cs becomes the minimum value, and the value becomes closer to the rear side of the vehicle The larger the value of the passage cross-sectional area Ce is, the greater the value of the passage cross-sectional area Cem is at the rear end in the vehicle length direction of the wall surface 10b.

In other words, in the inner space 8 , an enlarged region 20 having a channel cross-sectional area Ce larger than the channel cross-sectional area Cs at the recessed wall 15 is formed between the upright wall 10a and the recessed wall 15 by the wall surface 10b. The maximum value of the channel cross-sectional area Ce in the enlarged region 20 is the above-mentioned channel cross-sectional area Cem. The value of the channel cross-sectional area Cem is also larger than the value of the channel cross-sectional area Cn on the upstream side of the sink wall 15 (Cem>Cn).

Based on the above-described configuration of the present embodiment, as shown in FIG. 2 , the traveling wind W introduced into the inner space 8 of the intake duct 7 from the front grille 3 via the intake port 7 a flows directly to the meandering portion 10 , and the wind direction is changed at the meandering portion 10 . It flows obliquely toward the upper side of the vehicle, and then flows toward the exhaust port 7b toward the rear side of the vehicle by changing the wind direction, and flows to the engine through the air cleaner.

When the traveling wind W passes under the sink wall 15 in which the passage cross-sectional area Cs is reduced, the flow velocity increases due to being compressed. Therefore, even if the flow velocity of the introduced driving wind W is low, it can be accelerated in the inner space 8 of the intake duct 7 . After the traveling wind W is accelerated, the moisture contained in the traveling wind W increases in momentum due to its heavy mass, and when the traveling wind W is straight as indicated by the solid arrow in FIG. 2 and collides with the upright wall 10a, the traveling wind W A part of the moisture contained in the water falls along the upright wall 10a, and does not flow to the exhaust port 7b along the upright wall 10a along with the traveling wind W as in the past. Therefore, the moisture contained in the traveling wind W can be efficiently separated. The separated (falling) moisture flows to the upstream side along the intake pipe 7 when the vehicle 1 decelerates or stops, and is then discharged to the outside from the intake port 7a. On the other hand, the air from which light gas and moisture are separated in the traveling wind W passes above the upright wall 10a, flows to the exhaust port 7b, and enters the engine as indicated by the dotted arrow in FIG. 2 . Therefore, even when the vehicle is running at a low speed, the traveling air W can be effectively separated into liquid and gas, and it is possible to prevent air with high humidity from being sent into the engine.

In addition, since an enlarged area 20 in which the passage cross-sectional area Ce is enlarged exists between the upright wall 10a and the recessed wall 15 in the inner space 8, the traveling wind W whose flow velocity is accelerated in the recessed wall 15 reaches the enlarged area 20, Lighter gas has a slower flow rate and less momentum, and tends to flow upwards and over the upright wall 10a to the exhaust port 7b, while air containing moisture flows downwards due to its heavier mass and remains in the enlarged region 20. Since it has a large momentum, it can strongly collide with the upright wall 10a to separate the water. Therefore, gas-liquid separation can be performed more efficiently by using the enlarged area 20 .

In addition, since the upright wall 10 a is located on the lower side in the vehicle height direction and the recessed wall 15 is located on the upper side in the vehicle height direction in the interior space 8 , when the traveling wind W passes under the recessed wall 15 , the traveling wind W is pressed to the lower side and is After being accelerated, it goes straight toward the upright wall 10a, and can collide with the upright wall 10a strongly. As a result, the air containing moisture can be promoted to collide with the upright wall 10a efficiently, and the effect of gas-liquid separation can be further improved.

The present invention is not limited to the description in the above-mentioned embodiment, and can be appropriately changed. For example, in the above-described embodiment, the example in which the traveling wind W enters the engine through the discharge port 7b of the intake duct 7 is described, but the present invention is also applicable to the application of the air introduced through the intake duct 7 to a cooling device such as a radiator or an electric vehicle. The structure of the vehicle battery, etc.

Claims (3)

1. An air intake pipe of a vehicle is configured to extend along the vehicle length direction, and its interior space is a passage for the circulation of driving wind, characterized in that: A zigzag portion is formed in the inner space, the meandering portion has a recessed wall recessed toward the inner side of the inner space; and an upright wall facing the air inlet of the passage and located on the downstream side of the recessed wall, At the sink wall, the cross-sectional area of the channel is reduced. 2. The air intake pipe of a vehicle as claimed in claim 1, wherein: An enlarged area is formed between the upright wall and the recessed wall, The cross-sectional area of the channel in the enlarged region is greater than the cross-sectional area of the channel at the sink wall. 3. The air intake pipe of a vehicle as claimed in claim 1 or 2, characterized in that: In the interior space, the recessed wall is located on the upper side in the vehicle height direction, and the upright wall is located on the lower side in the vehicle height direction.

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