JPH0712686Y2 - Air introduction device for vehicle air cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an air introducing device for a vehicle air cleaner, and more particularly to an air introducing device equipped in a cab-over type vehicle and having a draining means.

The cab-over type vehicle is provided with an air intake slit on the outer surface of the vehicle body, and is provided with an air introduction device for supplying the air intake from the slit to an air cleaner of an engine provided in a lower portion of the cab.

By the way, if rainwater is mixed and introduced into the intake air, the performance of the air cleaner and the engine may be deteriorated. Therefore, conventionally, for example, a large-diameter chamber is provided in a part of the intake duct of the air introducing device, and the flow velocity of the intake air is reduced in this chamber to separate and separate the water in the intake air, and the separated water is formed at the bottom of the chamber. Measures are taken to remove it from the drain.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional means, the air and the water flow through the same passage, so that the separation of the water is not always completed completely.

Therefore, an object of the present invention is to provide an air introducing device capable of completely separating water from the conventional means and supplying only air to the air cleaner.

[Means for Solving the Problems] The air introducing device of the present invention is, as shown in FIGS. 1 to 4, a first duct 2 having an intake port 21 on a side surface and an air guide communicating with an air cleaner of an engine. The second duct 3 has an outlet 34 and is connected to the lower end of the first duct 2. The second ducts are parallel to each other and partitioned, and the upper end opening 311 communicates with the air passage 31 and the water drain passage 32, which communicate with the first duct 2, and the lower end opening of the air passage 31, and the side surface. An air outlet passage 33 having an air outlet 34 formed therein is integrally provided. And the drain passage 32
The upper end opening 321 of the air passage 31 is located lower than the upper end opening 311 of the air passage 31, and the lower end opening 322 of the drain passage 32 is located at the lower end opening 322.
Open to the outside at the intermediate position of 1, air outlet 2
3 is located higher than the lower end of the air passage. At the upper end of the second duct 3, the upper end opening 311 of the air passage 31 is located at the opening position of the intake port 21, and the upper end opening 321 of the drain passage 32 is located at a lower position than the intake port 21. It is fitted and fixed in the duct 2.

[Operation] Most of the water such as rainwater mixed with the intake air and entering the intake port 21 of the first duct 2 collides with the upper peripheral wall of the air passage 31 protruding into the first duct 2 and falls. , Is collected at the bottom of the first duct 2 and discharged to the outside through the drain passage 32.
The air from which most of the water has been removed and which contains a little water flows down through the air passage 31, reverses, and rises in the air lead-out passage 33 to the air lead-out port 34 located higher than the lower end of the air passage 31.
Then, the water is separated when rising up.

Therefore, the moisture in the intake air is first separated in the first duct 2 and further when the intake air reverses and rises from the air passage 31 to the air outlet passage 34, so that the moisture is almost completely separated and only the air is cleaned by the air cleaner. To

[Embodiment] The details of the present invention will be described with reference to the illustrated embodiment.

As shown in FIG. 5, a slit b for intake is formed on the outer plate of the center pillar a of the cab-over vehicle, and the air from the slit b is introduced into the center pillar a through an air cleaner (not shown). In addition, an air introduction device 1 for supplying the engine e installed under the cab c is provided.

As shown in FIGS. 1 to 4, the air introducing device 1 is made of synthetic resin, and as shown in FIG.
It consists of duct 3.

The first duct 2 is box-shaped and has an intake port 21 on its side surface that faces the intake slit a.

The second duct 3 includes a cylindrical air passage 31 and a cylindrical drain passage 32 that is formed integrally with the side surface of the passage 31 in parallel with the passage 31 and has a passage area smaller than that of the passage 31. The upper end opening 321 of the drain passage 32 is positioned lower than the upper end opening 311 of the air passage 31. The air passage 31 and the drain passage 32 are separated by a partition wall 36 that forms one side surface of the air passage 31. At the lower part of the air passage 31 and the drain passage 32, a container-shaped bottom portion 30 is formed so as to cover them. The lower end opening 322 of the drain passage 31 opens to the outer wall of the bottom portion 30 at an intermediate position of the air passage 31 and is open to the outside. A drain port 38 is provided on the bottom surface of the bottom portion 30.

The lower end of the air passage 31 is open to the inside of the bottom part 30, but the other partition wall 37 facing the partition wall 36 extends to a position close to the bottom surface of the bottom part 30, and the side walls of the partition wall 37 and the bottom part 30. An air outlet passage 33 is formed between and. The upper end of the passage 33 is closed, and an air outlet 34 is formed on the side surface of the end.

The upper end portion of the second duct 3 having the upper end opening 311 of the air passage 31 and the upper end opening 321 of the drain passage 32 is fitted and fixed from the lower end of the first duct 2. The upper end opening 311 of the air passage 31 is located at a vertically intermediate position of the intake port 21 of the first duct 2 or a position higher than that, and the upper end opening 321 of the drain passage 32 is located below the lower edge of the intake port 21. Is even lower. The main body portion of the first duct 2 into which the upper end portion of the second duct 3 is fitted and protrudes has a larger diameter than the upper end portion of the second duct 3 and has an annular groove around the upper end portion.
13 is formed, and the upper end opening 32 of the drain passage 32 is formed in the groove 13.
1 is open.

The air introducing device 1 of the present invention configured as described above is the fifth
As shown in the figure, the air intake 21 is installed in the center pillar a of the cab-over vehicle so as to face the air intake slit b, and the air cleaner of the engine e and the air outlet of the device 1 are installed.
Connect with 34 by another duct.

When traveling in the rain, air containing water is sucked into the intake port 21 of the first duct 2. At this time, the water content w contained in the air
Most of the air bubbles collide with the wall surface of the air passage 31 protruding into the first duct 2 and the inner surface of the first duct 2 and fall into the groove.
Received at 13. And the received water w is the drain passage 32
It flows down the passage 32 from the upper end opening 321, and is discharged to the outside from the lower end opening 322.

On the other hand, the air that has not been separated and contains some water flows down through the upper opening 311 of the air passage 31 and enters the container-shaped bottom portion 30. The air then rises up the air outlet passage 33,
It is sucked out from the air outlet 34. Then, the water contained in the air is separated from the air when the air enters the bottom 30 and rises upward, and is discharged from the drain port 38 formed on the bottom surface of the bottom 30.

[Advantages of the Invention] As described above, according to the device of the present invention, most of the water contained in the air is separated from the air when being sucked into the intake port 21, and further exits from the air passage 31 to exit the air passage. Since air is separated again when rising to 33, air containing almost no water can be supplied to the air cleaner.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of the device, FIG. 2 is a view of an upper portion of the device of FIG. 1 taken along arrow A, and FIG. 3 is a sectional view taken along line III-III of FIG. FIG. 4 and FIG. 4 are cross-sectional views taken along the line IV-IV of FIG. 1, and FIG. 5 is a diagram showing an example of the installation location of the device. 1 ... Air introduction device 2 ... First duct 21 ... Intake port 3 ... Second duct 31 ... Air passage 311 ... Air passage upper end opening 32 ... Drain passage 321 ... Drain passage upper end opening 322 ...... Drain passage bottom opening 33 …… Air outlet passage 34 …… Air outlet

Continuation of the front page (72) Inventor Hitoshi Sogabe, 100 Kanayama, Ichiriyama-cho, Kariya city, Aichi Toyota Shatai Co., Ltd. (56) References: Kaikaihei 1-139068 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A first side opening provided with an intake port for taking in outside air.
Second duct having an air outlet communicating with the air cleaner of the engine and connected to the lower end of the first duct.
The second duct is divided into an air passage and an air passage in parallel with the air passage, and the upper end opening is located lower than the upper end opening of the air passage and the lower end opening is formed in the air passage. The drain passage of water opened to the outside of the second duct at an intermediate position between the air passage and the air passage, and the lower end communicates with the lower end of the air passage and the air outlet is formed at a position higher than the lower end. An outlet passage is integrally provided, and an upper end of the second duct is provided so that an upper end opening of the air passage is located at an opening position of the suction port and an upper end opening of the drain passage is located at a lower position than the suction port. An air introduction device for a vehicle air cleaner, wherein the air introduction device is fitted and fixed in the duct 1.