JP2002339735A - Gas purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas purifier capable of almost preventing clogging though a filter is used and simultaneously removing water soluble harmful gas. SOLUTION: A discharge pipe 3 is fitted to one end side of a purifying chamber 1, and a filter 5 is disposed opposedly to the discharge pipe 3. A flow water pipe 7 and a flow water receiver 8 are installed at the upper and lower parts of the filter 5. The flow water pipe 7 is allowed to communicate with the flow water receiver 8 through a pipe, and a pump is installed midway in the pipe to pump up water flowing down to the flow water receiver 8 and circulate to the flow water pipe 7. The pump not illustrated is driven to flow water from the flow water receiver 8 to the flow water pipe 7. Exhaust gas is discharged from the discharge pipe 3 into the purifying chamber 1. Particulates and water soluble harmful gas contained in the exhaust gas are trapped while the exhaust gas passes through the filter 5, and washed out by water flowing down through the filter 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas purifying apparatus for purifying exhaust gas and the like of an automobile.

[0002]

2. Description of the Related Art Recently, exhaust gas emitted from diesel vehicles has become a social problem. Urban air pollution has a negative effect on health. It is believed that the main cause of air pollution is exhaust gas from diesel vehicles. Up to now, for example, a filter using a filter has been known because of its high efficiency in purifying exhaust gas and the like of an automobile. When a filter is used, it eventually becomes clogged. If it is enough to capture the coarse particles, a coarse filter can be used and the clogging will be slower. However, in the case where even fine particles have to be removed, the only option is to use a filter with close eyes, and clogging proceeds rapidly. If the eyes were clogged and the function deteriorated, there was no choice but to reuse it or replace it with a new filter after cleaning and updating. Cleaning is not only time-consuming and costly, but also cannot be performed during replacement. It was expensive to change every time it was clogged. In the case of using a filter, harmful gas in the gas could not be removed.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a gas purifying apparatus which hardly causes clogging while using a filter and can simultaneously remove water-soluble harmful gases.

[0004]

In the gas purifying apparatus according to the first aspect, water is continuously supplied to the water pipe. The water from the water pipe 7 continues to flow down inside the filter 5. Exhaust gas and the like of the vehicle are discharged from the discharge pipe 3 into the purification chamber 1. Particles contained in exhaust gas and the like are captured while passing through the filter 5, and most of the captured particles are washed away by water flowing down in the filter 5. Water-soluble harmful gases in exhaust gas and the like are also dissolved and removed in the flowing water. The exhaust gas and the like from which the particles and the water-soluble harmful gas have been removed in this way are discharged from the purification chamber 1.

[0005] In the gas purifying apparatus according to claim 2,
Further, the water flowing down in the filter 5 is collected by a running water receiver 8, and the collected water is pumped up by a pump and circulated to a flowing water pipe 7. In the gas purifying apparatus according to claim 3, the discharge pipe 3
Since the gas released from the filter tends to be evenly dispersed, the purifying action of the filter 5 becomes more efficient.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The gas purifying apparatus according to claim 1 is
A discharge pipe 3 for discharging exhaust gas or the like into the purification chamber 1 is provided at one end side of the closed purification chamber 1, and a filter 5 is disposed vertically at a position where a discharge port of the discharge pipe 3 is opposed. A water pipe 7 for flowing water into the filter 5 is provided above. In the gas purifying apparatus according to the second aspect, exhaust gas or the like is supplied to one end of the closed purification chamber 1.
A discharge pipe 3 for discharging water into the filter 5, a filter 5 is disposed vertically at a position where a discharge port of the discharge pipe 3 faces, and a flowing water pipe 7 for flowing water into the filter 5 is provided above the filter 5. A running water receiver 8 for collecting water flowing down in the filter 5 is provided below the filter 5, the running water pipe 7 and the running water receiver 8 are communicated with each other by a pipe, and a pump is provided in the middle of the pipe to supply water flowing down to the running water receiver 8. Is pumped up and circulated to the flowing water pipe 7.

According to a third aspect of the present invention, there is provided a gas purifying apparatus.
Or, the discharge tube 3 is characterized in that the discharge tube 3 is configured to concentrically arrange a plurality of large and small discharge tubes having a shape expanding in a divergent shape.

The filter 5 is desirably made of a non-woven fabric, but other commonly used materials can be used. The material, thickness, coarseness and the like of the filter 5 are determined by the type and amount of the gas to be treated. Usually, both sides of the filter 5 are sandwiched between some porous bodies 4 and 6 and attached. When the discharge tube 3 is configured to concentrically dispose large and small pieces having a shape expanding in a divergent shape, the shape expanding in the divergent shape may be a pyramid or a cone. The filter 5 may be arranged not vertically but inclined and vertically.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This embodiment is an embodiment applied to exhaust gas treatment of a diesel vehicle. FIG. 1 is a longitudinal sectional view showing the embodiment, and FIG. 2 is an AA sectional view of FIG. Reference numeral 1 denotes a closed purification chamber having a hollow inside and a closed space. The end of the exhaust gas pipe 2 is attached to the center of the right end of the purification chamber 1. A discharge pipe 3 is provided at the end of the exhaust gas pipe 2. The discharge tube 3 is provided in a quadrangular manner in a conical manner, although the size of the discharge tube 3 extends in a pyramid shape. A three-layer structure of a porous body 4 such as a wire net, a filter 5 and a porous body 6 is vertically arranged at an interval in front of the discharge tube 3. A pipe-shaped flowing water pipe 7 and a flowing water receiver 8 are provided above and below the three-layer structure, and the upper and lower parts of the flowing water pipe 7 and the flowing water receiver 8 are in close contact with the inner wall of the purification chamber 1. The upper flowing water pipe 7 opens downward, and the lower flowing water receiver 8 opens upward. The upper flowing water pipe 7 is provided with a water inlet 9, and the lower flowing water receiver 8 is provided with a water outlet 10. Although illustration is omitted, the outlet 10 and the inlet 9 are connected by piping,
A filtering device and a pump are provided in the middle of the pipe. An exhaust pipe 11 is provided above the left end of the purification chamber 1.

The above is used as follows.
A pump (not shown) is driven to flow water from the flowing water receiver 8 to the flowing water pipe 7. The water that has flowed down inside the filter 5 falls into the flowing water receiver 8, is filtered from the outlet 10 by a filtration device, is pumped up by a pump, and is sent to the inlet 9.
Exhaust gas from the diesel engine is emitted and diffused into the purification chamber 1 while diffusing almost uniformly from the exhaust gas pipe 2 through the discharge pipe 3. Particles contained in the exhaust gas are captured while passing through the filter 5, and most of the captured particles are washed away by water flowing down the filter 5. The water-soluble harmful gas in the exhaust gas is also dissolved and removed in the flowing water. Then, the exhaust gas from which the particles and the water-soluble harmful gas have been removed is discharged from the exhaust pipe 11.

[0011]

According to the gas purifying apparatus of the present invention, there is almost no clogging and a water-soluble harmful gas can be removed at the same time even though a filter having a high purifying efficiency is used.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Purification room 3 Release pipe 5 Filter 7 Running water pipe 8 Running water receiver

Claims (3)

[Claims] An exhaust pipe (3) for discharging exhaust gas or the like into the purification chamber (1) is provided at one end of the closed purification chamber (1).
A filter (5) is arranged vertically at a position where the discharge port of the discharge tube (3) faces, and the filter (5)
A gas purifier provided with a water pipe (7) for flowing water into the filter (5) above the filter. 2. A discharge pipe (3) for discharging exhaust gas or the like into the purification chamber (1) is provided at one end of the closed purification chamber (1).
A filter (5) is arranged vertically at a position where the discharge port of the discharge tube (3) faces, and the filter (5)
A flowing water pipe (7) for flowing water into the filter (5) is provided above the filter, and a flowing water receiver (8) for collecting water flowing down in the filter (5) is provided below the filter (5). 7) is connected to a running water receiver (8) by a pipe, and a pump is provided in the middle of the pipe so that water flowing down to the running water receiver (8) is pumped up and circulated to the running water pipe (7). apparatus. 3. The gas purifying device according to claim 1, wherein the discharge pipe (3) is formed by concentrically arranging a plurality of large and small divergent pipes.