JPH08319909A - Drainage system for air cleaner - Google Patents

Abstract

PURPOSE: To provide a drainage system for an air cleaner, which quickly discharges water intruded into the air cleaner. CONSTITUTION: A drainage system for an air cleaner is provided with a drain pipe 8, whose one end 8' is connected to a drainage port 7 situated at the bottom of an air cleaner 1 while whose other end 8'' is opened below the drainage port 7. In addition, the system is provided with another drain pipe 15, whose one end 15' is connected to a drainage port 13 of a generator chamber 10 and whose other end 15'' is connected to the drain pipe 8 at a position which is lower than the drainage port 13 of the generator chamber 10 or the drainage port 7 of the air cleaner 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner drainage device.

[0002]

2. Description of the Related Art In recent years, motorcycles have come to be used all over the world, and various competitions such as rallies and various recreations have been developed. . For example, on roads in Southeast Asia, about half of the tires of motorcycles may be submerged during the rainy season (the water level at this time is shown by a virtual line in Fig. 1), and motocross bikes and leisure bikes are natural. The target is the mountain and river. It is necessary to consider traveling on such roads and rivers covered with water (hereinafter referred to as "inundation channel"). When a motorcycle or the like travels through such a flooded channel, water may be rolled up and most of the vehicle body may be covered with water.

However, as shown in FIG. 4 (a), the air cleaner has a substantially box-shaped main body 102, an intake port 103 for taking in outside air, an element 104 for removing dust and foreign matters in the air, and foreign matters. Since the structure is provided with a discharge port 105 for discharging the removed air to a carburetor (not shown), water enters from the suction port 103. In particular, when entering a road covered with water as described above, there is a possibility that the water will bounce up and water will enter from the suction port 103. As a result, if water is accumulated in the air cleaner 101, the engine may take in water through the carburetor and cause a malfunction.

In order to prevent such inconvenience, a device for discharging water that has entered the air cleaner 101 is conventionally provided with a drain port 107 for draining water at the bottom of the main body 102. Further, in order to guide the water discharged from the drain port 107 to an appropriate position, one end of the drain pipe 108 is connected to the drain port 107 outside the main body 102, and the other end is located below the air cleaner 101 at an arbitrary position. It is open to. With this structure, the water accumulated in the air cleaner 101 is guided downward through the drain pipe 108 and discharged to the outside. In order to improve the prevention of water suction into the engine, there is a main body 102 provided with a recess 106 for accumulating water at the bottom, and the other end of the drain pipe 108 prevents backflow of water. There is also a check valve 109 provided. A similar technique is disclosed in Jitsukaihei 1-127962.

Further, as shown in FIG. 1, the generator chamber 110 provided near the crankcase of the engine also
There is a possibility of being covered with water from that position by submersion in water.
As shown in FIG. 4B, the generator chamber 110 has a case 112 in which an AC generator 111 for charging a battery (not shown), a wire harness 114, and the like are housed. . Although the generator chamber 110 is almost in a hermetically sealed state, water may intrude through a minute gap or the like in the joint portion of the cases 112 forming the outer wall. Such generator chamber 110
In order to discharge water that has entered the
A drain port 113 was provided at the bottom of 10. There is a drain valve 113 provided with a check valve (not shown) in order to prevent water from flowing back from the drain port 113.

[0006]

In the above-described drainage device for the air cleaner 101, the water that has entered the main body 102 through the suction port 103 is collected in the recess 106 provided in the bottom, and the collected water is collected. Is drainage port 1 due to its own weight
07, the drain pipe 108, and the check valve 109 are sequentially passed to be discharged to the outside. Therefore, it takes a long time until all the water is discharged from the main body 102.
Further, when the engine is rotating at high speed, the flow velocity of the air passing through the inside of the main body 102 of the air cleaner 101 is high, and as a result, the pressure inside the main body 102 is slightly smaller than the atmospheric pressure. It takes a longer time to drain the water accumulated in the. As described above, since the water that has entered the air cleaner 101 stays in the main body 102 for a long time, there is a high possibility that water will enter the carburetor and the engine and cause a malfunction.

On the other hand, as for the drainage of the generator chamber 110, the water accumulated from the drainage port 113 provided at the bottom is discharged by its own weight, similarly to the above. It takes time, but generator room 1
Since the AC generator 111 and the wire harness 114 in the apparatus 10 are waterproofed and have an insulating paint applied, even if water is accumulated in the generator chamber 110, the power generation capacity is not deteriorated.

The present invention has been made to solve the above-mentioned conventional inconvenience, and an object of the present invention is to provide a drainage device for an air cleaner that quickly discharges water that has entered the air cleaner.

[0009]

In order to achieve the above object, the drainage device for an air cleaner of the present invention has one end connected to a drain port at the bottom of the air cleaner and the other end opened below the drain port. A drainage device for an air cleaner having a drain pipe, which is a closed hollow drainage chamber having a drainage port at a bottom portion provided in the vicinity of the engine (meaning that the drainage port is in a sealed state except the drainage port. The same applies hereinafter), One end is connected to the drain port of the drain chamber, and the other end is provided with another drain pipe connected to the drain pipe at a position lower than the drain port of the drain chamber and the drain port of the air cleaner.

According to a second aspect of the present invention, the drain pipe includes the connecting portion and the other end at an arbitrary position from a connecting portion with the other drain pipe to the other end.
The same applies hereinafter), and a backflow prevention means for flowing water only in the other end direction may be provided.

According to a third aspect of the present invention, the drain pipe includes the connecting portion and the one end at an arbitrary position from a connecting portion with the other drain pipe to the one end.
The same applies hereinafter), and it is preferable to provide a backflow prevention means for flowing water only in the direction of the connecting portion.

As described in claim 4, the generator chamber accommodating the generator can be used as the drain chamber.

[0013]

The air cleaner drainage device of the present invention having the above-described structure has the following actions.

(1) According to the drain device of the air cleaner of the first aspect, in addition to the drain pipe connected to the drain port of the air cleaner, a hollow drain chamber having a drain port at the bottom provided near the engine, and one end Is connected to the drain port of the drain chamber and the other end is equipped with another drain pipe connected to the drain pipe at a position lower than the drain port of the drain chamber and the drain port of the air cleaner. When the water enters the inundation channel, the water is splashed up and the water that has entered the air cleaner can be quickly discharged. This is for the reason explained below.

The water that has entered the air cleaner moves due to its own weight so as to collect at the bottom of the air cleaner and be discharged through the drain pipe. At this time, that is, when the motorcycle etc. enters the flooded channel, Since the drainage chamber near the engine and having a high temperature is cooled by the splashed water, the pressure in the sealed drainage chamber becomes lower than the atmospheric pressure. Therefore, the water accumulated in the air cleaner is sucked into the negative pressure drainage chamber through the drain pipe and the other drain pipe connected to the drain pipe, and is quickly discharged from the air cleaner. The suction force of the drainage chamber at this time is applied to the air cleaner side (upper side) and the opposite open end side (lower side) of the drain pipe through the connecting portion of the drain pipe and the other drain pipe. Although they extend equally, water is sucked preferentially from the air cleaner side of the drain pipe due to the positional relationship, and water and air are hardly sucked from the open end side of the drain pipe. This is because the water existing from the air cleaner to the connecting part of the drain pipe is located higher than the water existing from the connecting part of the drain pipe to the opening end, and due to the difference in potential energy, the drain pipe is near the connecting part. This is because the water on the side of the air cleaner has a higher pressure.

After that, the water in the drain chamber and the other drain pipe is discharged to the outside through the drain pipe due to its own weight. Furthermore, when the motorcycle or the like passes through the flooded channel, the sealed drainage chamber is warmed by the engine and becomes higher than atmospheric pressure, so that the water and the like in the drainage chamber is pushed out to the outside and quickly discharged.

(2) According to the drain device of the air cleaner of the second aspect, the water is drained at an arbitrary portion of the drain pipe from the connection portion with the other drain pipe to the other end, only in the direction of the other end. Since the backflow prevention means for flowing the water is provided, as described above, by the suction force of the drainage chamber in the negative pressure state,
When sucking the water in the air cleaner into the drainage chamber, it is possible to prevent the action of quickly sucking the water or the air from the inside of the air cleaner from being sucked from the opening end side of the drain pipe.

(3) According to the drainage device of the air cleaner of the third aspect, water is drained to any portion of the drain pipe from the connecting portion with the other drain pipe to the one end only in the connecting portion direction. When the water sucked into the drainage chamber is discharged to the outside through the drain pipe, the drainage chamber is warmed and the pressure of the internal air increases, and the drainage chamber and other When the water in the drain pipe is pushed out, it is possible to prevent such water from flowing backward through the drain pipe and returning into the air cleaner.

(4) According to the drainage device of the air cleaner of the fourth aspect, since the drainage chamber is a generator chamber accommodating a generator, the above-mentioned operation is achieved by utilizing existing equipment such as a motorcycle. Can be demonstrated. this is,
As a drainage chamber exhibiting the above-mentioned action, a) it is in the vicinity of the engine and is warmed and kept at a high temperature while traveling, b) when a motorcycle etc. enters the flooded channel, it is submerged or covered with water and cooled. C) It is required to be in a sealed state except for the drainage port, but since the generator chamber is located in the vicinity of the engine and is in a substantially sealed state, the above requirements are satisfied, and the generator is further This is because even if a little water or mud enters the chamber, especially the bottom of the chamber, it does not adversely affect the power generation capacity.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the drainage device for an air cleaner according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, the air cleaner drainage device according to the present embodiment is a motorcycle equipped with the air cleaner drainage device according to the present invention, and a sectional view of the device is shown in FIG.

In the present embodiment, as shown in FIG. 2, the air cleaner 1 and the generator chamber 10 are connected by a drain pipe 8 or the like, but the air cleaner 1 and the generator chamber 10 themselves are shown in FIG. The conventional device shown in (b),
Also, since it is the same as that described in the above-mentioned related art section based on such a drawing, the same reference numerals (the last two digits are the same) are given to the common parts, and the description thereof will be omitted.

As shown in FIG. 2, the drainage device for an air cleaner according to this embodiment is basically of a structure in which a drain pipe 8 led from the air cleaner 1 and a drain pipe 15 led from the generator chamber 10 are connected. To do. More specifically, one end 8'of the drain pipe 8 is connected to a drain port 7 provided in a recess 6 for accumulating invaded water at the bottom of the main body 2 of the air cleaner 1, while the generator chamber 10 is connected. One end 15 'of the drain pipe 15 is connected to the drain port 13 at the bottom of the drain pipe 13 and the other ends 8 "and 15" of both drain pipes 8 and 15 are connected to each other. The connecting portion 16 between the drain pipes 8 and 15 is provided in the air cleaner 1 and the generator chamber 1.
In order that the water in 0 can be discharged by its own weight, it is set at a position lower than the drain port 7 of the air cleaner 1 and the drain port 13 of the generator chamber 10. Further, the connecting portion 16 has a discharge port 18 to the outside, and water flows from the drain pipes 8 and 15 only toward the discharge port 18 to the discharge port 18 from the outside. Check valve 9 to prevent back flow
And a filter 17 for preventing entry of sand or the like into the check valve 9.

According to the present embodiment, when the motorcycle enters the inundation channel and winds up the water and the water enters the air cleaner 1, the water X accumulates at the bottom of the air cleaner 1 due to its own weight and the drain pipe 8 , The exhaust gas passes through the check valve 9 and is discharged to the outside. However, since the generator chamber 10 is covered with water and cooled at the same time when the motorcycle enters the flooding passage of the motorcycle, the air in the generator chamber 10 is Depressurized to below atmospheric pressure. Therefore, the water X in the air cleaner 1 is sucked toward the generator chamber 10 (indicated by the arrow in FIG. 3A) and quickly discharged from the air cleaner 1. on the other hand,
The water X sucked into the generator chamber 10 in this way
As soon as the suction force of the generator chamber 10 is exhausted due to air leakage or temperature rise, the drain pipe 15 is charged by its own weight.
It is discharged through the check valve 9. Further, when the motorcycle passes through the flooded passage, the air in the generator chamber 10 is heated again by the heat of the engine, so that the air is pressurized and becomes higher than the atmospheric pressure. Therefore, the water X in the generator chamber 10 and the drain pipe 15 is pushed toward the check valve 9 (indicated by an arrow in FIG. 3B) and quickly discharged to the outside. Water is more likely to enter the air cleaner 1 when a motorcycle enters a flooded channel, that is, a river or a submerged road.
If the water in the air cleaner 1 can be quickly discharged as described above, it is possible to almost prevent the engine from malfunctioning.

It should be noted that the drain pipe 8 may be provided with a check valve that allows the water X to flow only in the direction of the connecting portion 16 and blocks the reverse flow to the air cleaner 1. By providing such a check valve, the above-described check valve is provided. Moreover, when the pressurized air in the generator chamber 10 pushes the water X toward the check valve 9, it can be prevented from flowing backward toward the air cleaner 1. Further, instead of the generator chamber 10, a hollow discharge chamber may be separately provided near the engine. Further, the equipment to be equipped with the drainage device of the air cleaner of the present invention is not limited to the motorcycle of the present embodiment, but can be applied to a four-wheel leisure bike or the like for traveling on a rough road.

[0025]

As is apparent from the above description,
The air cleaner drainage device according to the present invention has the following effects.

(1) According to the drainage device of the air cleaner of the first aspect, when the motorcycle or the like enters the submerged passage, the water that has been flipped up and has entered the air cleaner can be quickly discharged. Therefore, it is possible to prevent water that has stayed in the air cleaner for a long time from entering the carburetor or the engine and causing a malfunction.

On the other hand, water enters the air cleaner at the time of entering the inundation passage, and if the water in the air cleaner can be quickly discharged at that time, the malfunction of the engine due to the entry of water can be almost prevented. Therefore, as described above, it is effective for motorcycles for areas such as Southeast Asia where roads are flooded in the rainy season, leisure motorcycles and motocross vehicles for traveling on coasts and rivers, and the like.

(2) According to the drain device of the air cleaner of claim 2, when the water in the air cleaner is sucked into the drain chamber by the suction force of the drain chamber in the negative pressure state as described above, It is possible to prevent that the action of sucking water or air from the opening end side and quickly discharging the water from the inside of the air cleaner cannot be exerted.

The backflow prevention means used in this device is
It may be a simple check valve made of an elastomer material such as rubber used in conventional air cleaner drainage systems for motorcycles, etc. By using such a check valve, new parts are not required and it is economical. It is possible to improve the above-mentioned action while considering the above.

(3) According to the drainage device of the air cleaner of the third aspect, the drainage chamber is warmed, the pressure of the air inside is increased, and when the water in the drainage chamber and the other drain pipe is pushed out, the water is applied. Can be prevented from flowing back through the drain pipe and returning into the air cleaner. For this reason, it is possible to promote prevention of malfunction caused by the water accumulated in the air cleaner entering the engine or the like.

(4) According to the drain device of the air cleaner of the fourth aspect, it is possible to use the existing equipment such as a motorcycle to exert the above-mentioned operation. In other words, by utilizing conventional equipment for a motorcycle such as a drain pipe and a check valve of an air cleaner, and a generator chamber, and connecting one drain pipe to these, the above-mentioned operation is easily and economically exhibited. be able to.

[Brief description of drawings]

FIG. 1 is a side view showing a motorcycle equipped with an air cleaner drainage device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a drainage device of an air cleaner according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a drainage stroke of the drainage device of the air cleaner shown in FIG.

FIG. 4 is a cross-sectional view showing a conventional air cleaner drainage device and a generator chamber.

[Explanation of symbols]

 1 Air Cleaner 2 Main Body 6 Recess 7/13 Drain Port 8/15 Drain Pipe 9 Check Valve 10 Generator Chamber 16 Connection Part 18 Opening

Claims (4)

[Claims] 1. A drainage device for an air cleaner, comprising: a drain pipe having one end connected to a drainage port at the bottom of the air cleaner and the other end opened below the drainage, the drainage device being provided near the engine and drained to the bottom. A closed hollow drainage chamber having a mouth, one end of which is connected to the drainage port of the drainage chamber and the other end of which is connected to the drain pipe at a position lower than the drainage port of the drainage chamber and the drainage port of the air cleaner. The drain device of the air cleaner, which is equipped with the drain pipe of. 2. The air cleaner according to claim 1, wherein a backflow preventing means for flowing water only in the direction of the other end of the drain pipe is provided at an arbitrary position from a connecting portion with the other drain pipe to the other end. Drainage equipment. 3. The backflow preventing means for flowing water only in the direction of the connecting portion is provided at an arbitrary portion of the drain pipe from a connecting portion with the other drain pipe to the one end. Air cleaner drainage device. 4. The drainage device for an air cleaner according to claim 1, 2 or 3, wherein a generator chamber accommodating a generator is the drainage chamber.