JPH0650128A - Neutralizing machine of exhaust gas - Google Patents

Abstract

PURPOSE:To provide a neutralizing machine of exhaust gas to perform prevention of air pollution by way of absorbing exhaust gas of an automobile on a filter of carbon fiber and others by charging the gas into minus ions and discharging harmful substances of carbon monoxide and others which are components of the absorbed exhaust gas after oxidating it by ozone. CONSTITUTION:Exhaust gas discharged in an installation pipe 1 is charged into minus ions, and after harmful particulates are instantly absorbed in a filter, exhaust gas cleared of harmful substances permeates the filter and is discharged from an exhaust pipe 4, and by injecting ozone air from an ozone discharge pipe 8, it is possible to discharge the harmful substance in the exhaust gas absorbed in the outer surface of the filter from the exhaust pipe 4 by way of oxidating it by catalyzer effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas of an automobile, which is made to withstand negative ions to be adsorbed on a filter such as carbon fiber, and the components of the adsorbed exhaust gas are carbon monoxide, hydrocarbons, and nitrogen oxides. The present invention relates to an exhaust gas neutralizer for preventing air pollution by oxidizing substances and the like by exhausting them with ozone.

[0002]

2. Description of the Related Art Today, due to global warming and air pollution caused by the destruction of the ozone layer and the like, adverse effects on the human body and biological environment have become serious problems. Under these circumstances, the exhaust gas of automobiles occupies a large proportion as a cause of the above problems. Exhaust gas is a gas mainly discharged from an internal combustion engine such as a gasoline engine or a diesel engine. Generally, about 80% is harmless nitrogen and water vapor, but the remaining 20% is carbon monoxide, which is a harmful substance, Hydrocarbons, nitrogen oxides, lead compounds, particulate matter.

The substances which are the sources of air pollution are mainly carbon monoxide, hydrocarbons, nitrogen oxides and sulfur oxides.
Of these, automobile exhaust gas has a large specific gravity as a source of nitrogen oxides. In Japan, 1972
Although a car emission control plan was established in 1980, and although carbon monoxide, hydrocarbons, etc. were successful, it was technically difficult to control the important nitrogen oxide emissions. . However, to date, technological research in line with exhaust gas regulations has progressed, resulting in the development of highly economical engines.

As a method of suppressing the generation of the above-mentioned harmful components of the exhaust gas, while reducing the air-fuel mixture to the stoichiometric air-fuel ratio, stratified intake air or air injection is performed, or the ignition timing is precisely adjusted to improve the combustion efficiency. Various means such as raising the temperature or circulating a part of the exhaust gas as an inert gas in the cylinder to lower the combustion temperature have been adopted. However, due to such various exhaust gas control measures, a considerable amount of harmful substances are still being emitted even if they are below the regulation value, and a drastic solution is desired due to the increase in the number of vehicles owned. Although rare, technological changes to the internal combustion engine have reached the stage where further emission control is no longer possible.
Also, a method of oxidizing and reducing exhaust gas through a noble metal three-way catalytic converter has been put into practical use, but due to the use over time, the redox power is lost early and clogging occurs, and frequent replacement of the converter is required. Moreover, since the material cost of the constituent material itself is not low, there is a problem that the use cost increases.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems of the prior art and is used by connecting to an exhaust pipe to generate minor ions in the outflow path of automobile exhaust gas, Negative ions are charged to the harmful substances in the exhaust gas described above to make it a negative charge, and it is forcibly adsorbed on a filter such as carbon fiber to suppress the emission of gasified harmful substances to the outside world as much as possible. It is possible to discharge exhaust gas at a value far below the regulation, and to oxidize harmful substances by injecting ozone, and to prevent clogging of the filter even after use over time and use it for long-term use. Exhaust gas that achieves the prevention of air pollution that made it possible to spread to practical use by using an inexpensive filter without frequent filter replacement. There is provided a neutralizer.

[0006]

DISCLOSURE OF THE INVENTION The present invention relates to an exhaust gas neutralizer for achieving the above object,
First, the invention according to claim 1 is a mounting pipe (1) fitted to an exhaust pipe, an external casing (3) communicating with the mounting pipe (1) and storing a filter (2), and the external An acicular pipe connected to the anion generator (5) at an appropriate position in front of the mounting pipe (1) or the outer casing (3), the exhaust pipe (4) communicating with the casing (3) and serving as an exhaust port. The electrode (6) is fixed by penetrating it from the outside, and exhaust gas discharged into the mounting pipe (1) is transmitted through a filter (2) provided in an outer casing (3) to be exhausted. The structure is such that it is discharged into the outside air through the pipe (4).

The invention according to claim 2 is the configuration of the invention according to claim 1, in which the mounting pipe (1) or the external portion behind the mounting position of the needle electrode (6). An ozone discharge pipe (8) connected to the ozone generator (7) is attached to an appropriate place of the casing (3) in communication therewith.

[0008]

The present invention is constructed as described above. First, in the invention of claim 1, the exhaust gas discharged into the mounting pipe (1) is instantly charged with negative ions and instantly. After adsorbing harmful fine particles to the filter (2), the exhaust gas from which harmful substances have been removed passes through the filter (2) and is discharged from the exhaust pipe (4).

Further, in the invention according to claim 2,
Ozone exhaust pipe (8) connected to ozone generator (7)
By ejecting ozone air from the inside, the inside of the mounting pipe (1) and the outer casing (3) is filled with ozone air, and the harmful substances in the exhaust gas adsorbed on the outer surface of the filter (2) are catalytically actuated. It is intended to prevent the filter (2) from being clogged by being oxidized and suppressing the deposition and fixation on the surface due to aging, and discharging the oxidized fine particles captured by the filter (2) from the exhaust pipe (4). Become.

[0010]

1 is an exploded perspective view showing the construction of a filter device which is a constituent member of the present invention, FIG. 2 is an exploded perspective view showing the construction of the present invention, and FIG. 3 shows the construction of the present invention. FIG. 4 is a cross-sectional view, FIG. 4 is a cross-sectional view showing an attachment structure of a needle-shaped electrode which is a constituent member of the present invention, and FIG. 5 is a block diagram showing the function of the present invention.

As shown in FIG. 1, in this embodiment, the filter (2) is made of a non-woven fabric made of carbon fiber,
In order to make the area for trapping harmful substances as wide as possible, a bellows-shaped tubular body with left and right side surfaces opened is used. The porous net-like casing (9) for accommodating the filter (2) has left and right side surfaces opened, one side opening has a sealing cap (10), and the other side opening has a circular hole in the center. The pipe mounting cap (11) is fitted, and the exhaust gas outflow pipe (12) is housed in the mesh casing (9) while being inserted into the circular hole. Exhaust gas outflow pipe (1
In 2), a large number of small holes (13) are bored in a portion located inside the mesh casing (9), and a rubber ring (14) is formed in a portion located outside the mesh casing (9). The rubber ring (14) is externally attached, as shown in FIG.
Airtightness is provided by closing a gap between an exhaust gas pipe (4), which will be described later, and an exhaust gas outflow pipe (12) outside the mesh casing (9). When attaching the filter (2), the exhaust gas outflow pipe (12) is inserted into the longitudinal insertion hole of the filter (2) and the exhaust gas outflow pipe (12) is covered with the filter (2). is doing.

As shown in FIG. 2, the external structure of the present invention comprises a mounting pipe (1) fitted to the exhaust pipe and an external casing (3) communicating with the mounting pipe (1) and accommodating the filter (2). ) And an exhaust pipe (4) communicating with the outer casing (3) and serving as an exhaust port. The mounting pipe (1) is provided at its end with a lid (15) which is fitted to the opening side of the outer casing (3). In addition, a ceramic annular body (1) for insulation is provided on the inner peripheral surface of the mounting pipe (1).
6) is provided internally, and five needle-shaped electrodes (6) covered with an insulator are fixed from the outside in the vicinity of the center of the mounting pipe (1), and each needle-shaped electrode (6) is fixed. Is directly connected at its end and is connected to the negative side high voltage terminal of the anion generator (5) shown in FIG. Further, as shown in FIGS. 3 and 5, an ozone generator (7) is provided approximately in the middle between the attachment position of the needle electrode (6) and the attachment portion of the lid (15) in the mounting pipe (1). The ozone discharge pipe (8) that is connected to the
Further, it is possible to discharge an appropriate amount of ozone into the outer casing (3) at appropriate intervals. Further, in the present embodiment, an ozone pump (7) is connected to an air pump to force ozone air at a constant pressure. It is configured to discharge. Further, the exhaust pipe (4) has a diameter into which the exhaust gas outflow pipe (12) can be fitted. In this embodiment, the circular filter (17) made of carbon fiber is arranged so as to be in close contact with the outside of each of the sealing cap (10) and the pipe mounting cap (11). Although the heat absorption from the exhaust gas is carried out to suppress the carbonization of the filter (2), the circular filter (17) is not always necessary depending on the material of the member constituting the filter (2).

Regarding the use state of the present invention, FIG. 3 and FIG.
It will be described below based on. When the neutralizer main body is mounted by fitting the mounting pipe (1) into the exhaust pipe of the automobile, the exhaust gas is discharged from the mounting pipe (1) into the neutralizer main body by driving the engine. At this time, a negative high voltage is applied to the needle-shaped electrode (6) provided in the path of the mounting pipe (1), so that a large amount of negative ions are generated inside the mounting pipe (1), and the fine particles in the exhaust gas are discharged. Negative ions charge the atoms of various substances. After that, it passes through a circular filter (17) located at the rear side, flows into the outer casing (3), enters inward through a large number of gaps on the outer peripheral surface of the reticulated casing (9), and is used for exhaust gas outflow. Most of the harmful substances are captured by the filter (2) mounted between the pipe (12) and the mesh casing (9), and the filtered residual gas component permeates the filter (2) and is exhausted. The gas enters the inside of the gas outflow pipe (12) through the small hole (13), passes through the exhaust pipe (4), and is discharged to the outside. In this case, the harmful substances in the exhaust gas are captured by the filter (2) rapidly and reliably by the negative ion charging, and the exhaust gas filtering efficiency is improved.

With use over time, harmful substances in the trapped exhaust gas are deposited and solidify on the outer peripheral surface of the filter (2), but at appropriate intervals (for example, 1, 2 per hour).
In the process), ozone is generated from the ozone generator (7), ozone air is sent into the mounting pipe (1) from the ozone discharge pipe (8) in an appropriate amount, and the monoxide captured on the outer peripheral surface of the filter (2) as described above. Exhaust gas outflow pipes from both sides of the filter (2) sequentially from both sides of the filter (2) by oxidizing harmful substances such as carbon, hydrocarbons and nitrogen oxides by a catalytic action to suppress solidification of the solid substances 12), and discharge it through the exhaust pipe (4). In this case, the oxidized harmful substances have a high specific gravity and adhere to the body of the car or the road surface, and they do not cause air pollution. In this embodiment, an air pump is connected to the ozone generator (7) so that ozone air is forcibly fed at a constant pressure to facilitate the discharge of accumulated harmful substances.

[0015]

As described above, by using the exhaust gas neutralizer according to the present invention, harmful substances in exhaust gas of automobiles are instantly adsorbed by the filter (2), and harmful substances such as nitrogen oxides. It is possible to suppress the emission of air into the outside world as much as possible, and it is possible to achieve the prevention of air pollution. In particular, it is effective for large buses and trucks using diesel engines. In addition, by discharging ozone into the body of the neutralizer at appropriate intervals, clogging of the filter (2) can be suppressed and the filter can be used for a long period of time without the need for frequent filter replacement. Since the cost can be kept low, it can be put to practical use in general.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a filter device that is a component of the present invention.

FIG. 2 is an exploded perspective view showing the configuration of the present invention.

FIG. 3 is a cross-sectional view showing the structure of the present invention.

FIG. 4 is a cross-sectional view showing a mounting structure of a needle-shaped electrode which is a constituent member of the present invention.

FIG. 5 is a block diagram showing functions of the present invention.

[Explanation of symbols]

 1 Installation Pipe 2 Filter 3 External Casing 4 Exhaust Pipe 5 Anion Generator 6 Needle-shaped Electrode 7 Ozone Generator 8 Ozone Discharge Pipe 9 Netted Casing 10 Sealing Cap 11 Pipe Mounting Cap 12 Exhaust Gas Outflow Pipe 13 Small Hole 14 Rubber Ring 15 Lid 16 Ceramic annular body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayoshi Koide 5-7-4-102 Nokata, Nakano-ku, Tokyo (72) Inventor Kazumi Yamamoto 2-13-1-1018 Fan, Adachi-ku, Tokyo

Claims (2)

[Claims] 1. A mounting pipe (1) fitted to an exhaust pipe, a communication with the mounting pipe (1), an external casing (3) for accommodating a filter (2), and a communication with the external casing (3). Exhaust pipe that serves as an exhaust port (4)
And a needle-like electrode (6) connected to the anion generator (5) from the outside and fixed at an appropriate position in front of the mounting pipe (1) or the outer casing (3). Neutralizer. 2. A mounting pipe (1) fitted to an exhaust pipe, an external casing (3) communicating with the mounting pipe (1) and accommodating a filter (2), and a external casing (3). Exhaust pipe that serves as an exhaust port (4)
A needle-shaped electrode (6) connected to the anion generator (5) from the outside and fixed at a proper position in front of the mounting pipe (1) or the outer casing (3). Mounting pipe (1) behind the mounting position of 6)
Alternatively, an exhaust gas neutralizer in which an ozone discharge pipe (8) connected to an ozone generator (7) is attached to an appropriate place of the outer casing (3) in communication therewith.