JPS649448B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust gas purification device for an internal combustion engine.

CO and NOx from exhaust gas from internal combustion engines such as automobiles
A variety of purification devices have been devised to remove harmful substances and dust, such as: Among them, those that use clean water such as water are structurally simple and inexpensive. For example, an inner cylinder is installed on the same axis within an outer cylinder whose upper and lower surfaces are closed and filled with clean water, and the upper part of the gap between the two cylinders is closed, and the lower part of the inner cylinder is connected between the inside of the inner cylinder and the above-mentioned gap. A communication hole is formed, an exhaust gas introduction pipe of an internal combustion engine is connected to the upper part of the inner cylinder, and an exhaust pipe is connected to the upper part of the gap.

However, in the above-mentioned conventional system, there is a problem in that captured solid matter such as dust settles on the bottom of the inner and outer cylinders and then rises up again into the clean water due to vibration etc. and becomes cloudy, reducing the gas purifying power of the clean water. Furthermore, since the exhaust gas is at a high temperature, the entire device becomes hot, and the clean water evaporates, requiring frequent replenishment, making operation cumbersome.

An object of the present invention is to provide a purification device that solves the above problems and further improves purification efficiency.

That is, in this invention, the bottom of an outer cylinder whose upper and lower surfaces are closed and filled with clean water is partitioned by a perforated plate, and an inner cylinder with a through hole formed in the lower part on the perforated plate inside the outer cylinder is arranged on the same axis. The upper surface of the inner cylinder is covered with a plate so that the outer peripheral edge of the plate protrudes from the cylinder, a saucer portion facing inward is provided below the protruding outer peripheral edge, and an opening facing the saucer portion is formed in the upper part of the inner cylinder. Then, a cooling pipe is provided that goes out from the saucer part to the outside of the outer cylinder and reaches the lower part of the outer cylinder.
Further, an exhaust gas introduction pipe of the internal combustion engine is opened at the bottom of the inner cylinder, and an exhaust pipe is connected to the upper part of the outer cylinder.

With this configuration, the exhaust gas rises from the bottom of the inner cylinder and comes into contact with the clean water to be purified, collides with the plate from the upper opening to separate the liquid component, and flows out from the exhaust pipe. On the other hand, the clean water and separated liquid coming out of the opening at the top of the inner cylinder enter the cooling pipe from the saucer section, are cooled, and reach the lower part of the outer cylinder. Furthermore, the captured solid matter such as dust settles and settles to the bottom of the outer cylinder through the holes of the perforated plate.

Therefore, according to the present invention, since the exhaust gas is caused to flow upward from below the clean water, the contact between the gas and the water is ensured, the cleanliness rate is improved, and the gas is smoothly distributed. flow, and the load on the internal combustion engine is also light. Furthermore, solid sediment such as captured dust settles to the bottom of the outer cylinder through the holes in the perforated plate, so even if vibration occurs, the perforated plate prevents the sediment from flying up, reducing cleaning efficiency. There is no.

Hereinafter, embodiments will be described based on the accompanying drawings.

As shown in FIGS. 1 to 3, the bottom of the outer cylinder 1 whose upper and lower surfaces are closed is partitioned by a perforated plate 2 to form a sedimentation area 3, and the inner cylinder is placed on the perforated plate 2 inside the outer cylinder 1. 4
are installed on the same axis, and both cylinders 1 and 4 are filled with clean water. An exhaust gas introduction pipe 5 of an internal combustion engine is introduced from the upper side of the outer cylinder 1, and its opening faces the center of the bottom of the inner cylinder 4. A through hole 6 and a notch 7 are formed around the opening of the introduction pipe 5 to allow gas to flow out smoothly. However, the gas outflow effect can be achieved by simply separating the opening from the perforated plate 2 by a required amount. A muffler 9 having a plurality of porous copper pipes 8 is interposed in the middle of the inlet pipe 5 to perform a muffling action and remove CO and the like that cannot be removed by water purification.

A notch 10 and a through hole 11 are formed in the lower part of the inner cylinder 4 to allow clean water to flow into the inner cylinder 4 from the outer cylinder 1 side. The notch 10 and the through hole 11 may only be provided on one side,
The “through hole” in the scope of the utility model registration request is notch 1
0 and through hole 11. The upper surface of the inner cylinder 4 is covered with a plate 12, the outer peripheral edge of the plate 12 projects from the inner cylinder 4, and an L-shaped cross-sectional saucer part 13 facing inward is provided below the projected outer peripheral edge. The area covered by the plate 12 may be more than half of the upper surface of the inner cylinder 4, as shown in the figure, or the entire upper surface. Receiver portion 13 at the top of the inner cylinder 4
A through hole 14 is formed at a position facing the inner cylinder 4 , and the exhaust gas and clean water that have risen through the inner cylinder 4 collide with the plate 12 to separate gas and liquid, and the liquid falls into the saucer part 13 . The liquid-separated gas flows out from the upper part of the outer cylinder 1 through the exhaust pipe 15. A tilted downward separation plate 16 is provided at the inlet of the exhaust pipe 15, and gas-liquid separation of the gas is performed again. The plate 12 may not be fixed to the inner cylinder 4, but may be fixed to the outer cylinder 1 or the like by some means to create a gap between the plate 12 and the inner cylinder 4, and serve as an opening instead of the through hole 14.

A cooling pipe 17 is guided out of the outer cylinder 1 from the saucer part 13, and its lower end is connected to the lower part of the outer cylinder 1. Therefore, the liquid that has fallen into the saucer portion 13 is cooled in the cooling pipe 17 and reaches the lower part of the outer cylinder 1 above the perforated plate 2. Shape of cooling pipe 17 and shape of fins 18
The number may be selected appropriately.

A branch pipe 19 may be provided in the cooling pipe 17, and this branch pipe 19 may be connected to the introduction pipe 5 so that clean water is spouted into the introduction pipe 5.

In the figure, 20 is a clean water supply tank, 21 is a sediment discharge tank, and 22 is a water level gauge.

The embodiment is configured as described above, and its operation will be explained next.

Now, when exhaust gas is ejected from the internal combustion engine into the inlet pipe 5, the gas is muffled and silenced by the muffler 9.
CO, etc. are removed and ejected to the bottom of the cylinder 4. This jetting force causes the clean water to flow upward as shown by the arrow, and the gas also rises along the flow, and during the rise, gas-liquid contact is made and harmful substances such as NOx and dust are removed. The gas and clean water that have reached the upper part of the inner cylinder 4 collide with the plate 12 and flow out from the through hole 14 while separating the gas and liquid. The liquid is separated and flows out through the exhaust pipe 15. On the other hand, the liquid that fell into the saucer part 13 is removed from the cooling pipe 1.
After passing through 7 and being cooled, it reaches the lower part of the outer cylinder 1. In this way, the clean water circulates through the upper and lower parts of the inner and outer cylinders 4, 1 while being cooled, thereby cleaning the exhaust gas.

Solid matter such as dust trapped in the clean water settles and reaches the settling section 3 through the holes of the perforated plate 2, where it settles. This precipitate does not fly up due to the presence of the perforated plate 2. The precipitate is discharged from the pot 21 as appropriate.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the exhaust gas purification apparatus of the present invention, FIG. 2 is a cutaway front view of FIG. 1, and FIG. 3 is a plan view of FIG. 1. DESCRIPTION OF SYMBOLS 1...Outer cylinder, 2...Perforated plate, 4...Inner cylinder, 5...Gas introduction pipe, 6...Through hole, 7...Notch, 10...Notch, 11...
Through hole, 12...Plate, 13...Saucer part, 14...Through hole, 1
5...Exhaust pipe, 18...Cooling pipe.

Claims (1)

[Claims] 1. The bottom of an outer cylinder whose upper and lower surfaces are closed and filled with clean water is divided by a perforated plate, and an inner cylinder with a through hole formed in the lower part is provided on the same axis on the perforated plate in the outer cylinder,
The upper surface of the inner cylinder is covered with a plate, the outer peripheral edge of the plate is made to protrude from the inner cylinder, a saucer portion facing inward is provided below the protruding outer peripheral edge, and an opening facing the saucer portion is formed in the upper part of the inner cylinder. A cooling pipe is provided extending from the saucer part to the outside of the outer cylinder and reaching the lower part of the outer cylinder, and an exhaust gas inlet of the internal combustion engine is opened at the bottom of the inner cylinder, and an exhaust pipe is connected to the upper part of the outer cylinder. An exhaust gas purification device for internal combustion engines.