KR100986035B1 - Dust draining apparatus of the air duct - Google Patents

Abstract

The present invention relates to a foreign matter discharge device of the air duct so that the foreign matter and water separated from the intake air collected in the middle of the air duct connecting the air cleaner in the intake duct of the vehicle can be automatically discharged by the pressure of the exhaust system,

In the foreign substance discharge structure of the vehicle intake machine in which a discharge port for discharging foreign matter and water separated from the suction air is formed on the lower side of the air duct for guiding the suction air introduced from the intake duct to the air cleaner side,

One end is connected to the outlet and the other end is formed with a drain hose connected to the middle of the tail pipe behind the muffler of the vehicle, the lip valve is opened and closed by the pressure difference between the intake system and the exhaust system in the middle of the drain hose It is characterized in that the body of the lip valve is formed in a cylindrical shape so that both ends of the drain hose can be connected, a hemispherical partition wall is formed in the middle of the body concave downward, The lower portion of the partition wall is formed with a slot for communicating both sides of the partition wall, characterized in that formed on the lower both sides of the slot is formed so that the operation of the lip-shaped protrusions attached to each other.

Drain Hose, Lip Valve, Air Duct, Tail Pipe

Description

Dust draining apparatus of the air duct

1 is a configuration of the air duct foreign matter discharge apparatus according to the present invention.

2 is a partial cutaway perspective view of a lip valve according to the present invention;

3 to 4 are cross-sectional views of the main part for explaining the operating state of the lip valve according to the present invention.

5 is a view for explaining a conventional technology.

[Description of Drawings]

10 intake duct 11: air cleaner

12 air duct 13 outlet

20: drain hose 30: lip valve

31 body 32 partition wall

33: slot 34: protrusion

40: muffler 41: tail pipe

The present invention relates to an apparatus for discharging a foreign substance of an air duct, and more particularly, the foreign matter and moisture separated from the intake air accumulated in the middle of the air duct connecting the air cleaner in the vehicle intake duct are automatically controlled by the pressure of the exhaust system of the vehicle. It relates to a foreign matter discharge device of the air duct to be discharged.

The vehicle is formed with an intake system including an intake duct, an air duct, and an air cleaner to allow the air necessary for combustion of fuel from the engine to be sucked in. In particular, a commercial vehicle such as a bus or a truck increases the engine size. Accordingly, the structure of the intake machine is relatively large and complicated compared to the compact vehicle. In particular, in the case of truck vehicles, intake ducts and air cleaners are usually located in the space between the cabin and the deck on which the driver's seat is provided.

As described above, in the case of truck vehicles, the intake duct and the air cleaner may be exposed to the outside, so that rain may flow in the rain, and foreign matter such as dust may easily flow in while driving the vehicle. Therefore, as a countermeasure against inflow of foreign substances and water, the inlet duct is positioned at a lower position as far as possible, and is connected between the intake duct and the air cleaner as an air duct formed by a rubber hose, so that air can flow into the engine. It is configured to be. In this way, since the intake machine is formed relatively long, the air duct and the like are formed to be separated and assembled into several parts based on the air duct and the air cleaner.

FIG. 5 is a view illustrating an intake system applied to a general truck vehicle, and an air duct for guiding air sucked into the lower side of the intake duct 10 having one side formed with a grill so that the air flows into the air cleaner 11 is shown. 12 is piped. The middle of the air duct 12 is formed relatively lower than the position of the intake duct 10 or the air cleaner 11, the lowest position of the foreign matter for the discharge of water or foreign matter separated from the intake air An outlet 13 is formed. And the discharge port 13 is provided with a valve made of a rubber material that is automatically opened and closed by the pressure change of the intake machine, the valve is opened and closed by the pressure change around the discharge port 13, the foreign matter and moisture to the outside by its own weight Configured to be discharged.

However, in the case of the natural discharge method in which the foreign matter discharge method is caused by the pressure change around the discharge port as described above, most foreign matter and moisture accumulated in the air duct are introduced during the driving of the vehicle, so that the valve of the discharge port is separated. There was a problem that foreign matter or moisture is introduced into the air cleaner, which shortens the life of the air cleaner.

Accordingly, the present invention has been made to solve the above problems, the foreign matter and water separated from the intake air accumulated in the middle of the air duct connecting the air cleaner in the intake duct of the vehicle is automatically discharged by the pressure of the exhaust system of the vehicle It is an object of the present invention to provide a debris discharge device of an air duct.

The present invention as a means for achieving the above object,

In the foreign substance discharge structure of the vehicle intake machine in which a discharge port for discharging foreign matter and water separated from the suction air is formed on the lower side of the air duct for guiding the suction air introduced from the intake duct to the air cleaner side,                         

One end is connected to the outlet and the other end is formed with a drain hose connected to the middle of the tail pipe behind the muffler of the vehicle, the lip valve is opened and closed by the pressure difference between the intake system and the exhaust system in the middle of the drain hose Characterized in that the mounting,

The body of the lip valve is formed in a cylindrical shape so that both ends of the drain hose can be connected, a hemispherical partition wall is formed in the middle of the body concave downward, the lower portion of the partition wall of the partition wall Slots communicating both sides are formed, the lower side of the slot is characterized in that the lip-shaped protrusions are formed to be attached to each other and fall off.

Hereinafter, a preferred embodiment according to the configuration and operation of the foreign matter discharge device of the air duct according to the present invention will be described in detail with the accompanying drawings.

1 is a configuration of the air duct foreign matter discharge apparatus according to the present invention, Figure 2 is a partial cutaway perspective view of the lip valve according to the present invention, Figures 3 to 4 illustrate the operating state of the lip valve according to the present invention It is a cross section of the main part.

Reference numeral 20 in the drawings indicates a drain hose according to the present invention, reference numeral 30 indicates a lip valve according to the present invention, and some reference numerals refer to the same symbols used in the description of the prior art. do.

One end of the drain hose 20 is connected to the foreign matter discharge port 13 provided on the lower side of the air duct 12, and the other end is connected in the middle of the tail pipe 20 provided on the rear side of the vehicle. The other end of the drain hose 20 may be connected in the middle of the exhaust system rather than the tail pipe 41, but the tail pipe 41 behind the muffler is considered when considering the discharge side of the foreign matter and water accumulated in the air duct 12 of the intake system. ) Is advantageous.

Mounting of the drain hose 20 is to use the pressure of the exhaust system of the vehicle to the air duct 12, rather than to allow the foreign matter and water accumulated in the lower side of the air duct 12 to be naturally discharged by its own weight This is to ensure that the debris and water are more strongly and timely discharged.

Meanwhile, in the middle of the drain hose 20, a lip valve 30 is mounted in which opening and closing operations are performed by a difference between the pressure of the exhaust system and the pressure of the intake machine.

The body 31 of the lip valve 30 is formed in a cylindrical shape so that both ends of the lip valve 30 can be connected in the vertical direction. In the middle of the body 31, a partition wall 32 is formed to be concave downward. A slot 33 is formed in the middle of the partition wall 32 to allow the upper and lower portions of the partition wall 32 to communicate with each other, and the slot 33 is preferably formed to have a long side shape as shown in the figure. In particular, the lower sides of the slot 33 is formed to protrude so that the protrusions 34 are attached to each other in a shape of a lip in a shape of a lip.

The lip valve 30 is preferably formed of a rubber material so that the operation of the protrusion 34 provided below the slot 33 can be made smoothly. The movement of the protrusion 34 is caused by the pressure difference between the intake system and the exhaust system. When the pressure of the intake system is higher than the pressure of the exhaust system, negative pressure is applied to the upper side of the partition wall 32 so that both protrusions 34 adhere to each other. When the pressure of the exhaust system is higher than the pressure of the intake machine, negative pressure is applied to the lower side of the partition wall 32 so that both protrusions 34 are separated from each other.

When the slot 33 is viewed from the upper side or the lower side of the partition 32 is formed in a straight shape, when viewed from the side, the partition wall 32 is a hemispherical shape so that the arc shape. In the embodiment of the present invention, when viewed from the upper side or the lower side of the partition wall 32 is formed in a long form, but if necessary it may be formed in a '+' shape or circular.

The operation of the air duct foreign matter discharge device configured by the present invention will be described below.

Since the air duct foreign matter discharge device according to the present invention is configured to be automatically operated by the pressure difference between the exhaust system and the intake system, the idle of the engine based on the operating region of the engine in which the exhaust system and the intake system show pressure differences from each other. (Idle) The operation will be divided into three stages: initial acceleration of the engine and acceleration of the engine.

First, when the engine is idle, the intake system receives a small engine negative pressure transmitted from the combustion chamber, so that the pressure around the outlet of the air duct 12 alternates between + and-pressure, resulting in an incomplete state. . Accordingly, while the protrusion 34 of the lip valve 30 vibrates and falls, the foreign matter or moisture accumulated in the air duct 12 during the opening operation of the slot 33 is inserted into the slot 33. Will exit. The foreign matter and water passing through the slot 33 are discharged to the outside through the tail pipe 41.

When the engine is in the initial acceleration state, pressure is applied to both the intake side and the exhaust system side of the engine, but the pressure of the intake system is higher than the pressure of the exhaust system. Therefore, the protrusions 34 on both sides provided on the lower side of the slot 33 are attached to each other, and the slot 33 is clogged so that foreign matter and moisture separated from the intake air are accumulated in the air duct 12. In addition, since the slot 33 is closed, the exhaust gas backflow from the exhaust system to the intake machine is prevented.

Finally, when the engine is in an accelerated running state, the pressure applied to the exhaust system is much greater than the pressure applied to the intake system. At this time, in the case of a vehicle equipped with a diesel engine, it is known that the exhaust gas flow rate of the exhaust system is about 5 to 10 times faster than the air flow rate of the intake system. Accordingly, the two side protrusions 34 below the slot 33 are separated from each other, and the foreign substances and water accumulated in the air duct 12 are discharged through the open slot 33. The foreign matter and water passing through the slot 33 are mixed with the exhaust gas and discharged to the outside through the tail pipe 41.

According to the present invention configured as described above, since the lip valve provided in the drain hose connecting the air duct and the exhaust system to each operating region of the engine is opened or closed, foreign matter and moisture separated from the intake air are accumulated in the air duct. In addition to being discharged to the outside through the exhaust system during the acceleration of the acceleration, the lip valve is kept closed during the initial acceleration of the engine has the great advantage that the phenomenon that the exhaust gas of the exhaust system backflow to the intake system is prevented.

Claims (4)

In the foreign substance discharge structure of the vehicle intake machine in which a discharge port for discharging foreign matter and water separated from the suction air is formed on the lower side of the air duct for guiding the suction air introduced from the intake duct to the air cleaner side, One end is connected to the outlet 13 and the other end is formed with a drain hose 20 connected to the middle of the tail pipe 41 behind the muffler of the vehicle. The foreign matter discharge device of the air duct, characterized in that the lip valve 30 is opened and closed by the pressure difference of the exhaust system. The method of claim 1, The body 31 of the lip valve 30 is formed in a cylindrical shape so that both ends of the drain hose 20 can be connected, but hemispherical concave downward in the middle of the body 31. A partition wall 32 is formed, and a slot 33 for communicating both sides of the partition wall 32 is formed at a lower portion of the partition wall 32, and a lip-shaped protrusion 34 is provided at both lower sides of the slot 33. Debris discharge device of the air duct, characterized in that formed so that the operation of the falling apart. The method of claim 2, The slot 33 is a foreign material discharge device of the air duct, characterized in that formed long in the shape of an arc. 4. The method according to any one of claims 1 to 3, The lip valve 30 is a foreign matter discharge device of the air duct, characterized in that formed of a rubber material.

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