KR100411050B1 - Device of reducing noxious substances adopting muffler - Google Patents

Abstract

An apparatus for reducing harmful substances employing a silencer is disclosed. An apparatus for reducing harmful substances employing the disclosed muffler includes: a muffler including a housing in which a plurality of chambers are formed and a pipe installed in the housing to allow exhaust gas discharged from the engine of the vehicle to circulate the chamber; And a plasma reactor installed in communication with the pipe so as to reduce harmful substances contained in the exhaust gas while the exhaust gas is circulated. According to the present invention, there is an advantage that can reduce the noise and harmful substances contained in the exhaust gas.

Description

DEVICE OF REDUCING NOXIOUS SUBSTANCES ADOPTING MUFFLER}

The present invention relates to an apparatus for reducing harmful substances employing a silencer, and more particularly, combines the function of a muffler and the function of a plasma reactor to reduce emission and emission of a diesel engine. It relates to a hazardous substance reduction device employing this improved silencer.

Diesel engines are strongly recommended as alternatives to gasoline engines, which can reduce thermal efficiency and fuel economy, and the demands of users are rapidly increasing.

However, as the use of diesel engines continues to increase, many developed countries are tightening their emissions standards and are forced to reduce their emissions. This is a form of encroaching market share for the automotive industry, which implies the possibility of opening up larger markets by satisfying these regulations.

In other words, as this regulation is gradually strengthened around Europe and the United States, a new concept of exhaust purification equipment is urgently needed to overcome the existing aftertreatment system, and only companies that satisfy the tightened emission regulations first survive. to be.

Accordingly, as an alternative, various kinds of countermeasures are currently being studied, and among them, an exhaust purification system using plasma has received new attention with the possibility of simultaneously reducing NOx and Particulate Matter.

Against this background, the technology of the plasma device is continuously being studied, and the electrode shape of the plasma device is recognized as an important technology.

In addition, the exhaust discharge sound of the vehicle has an important influence on the merchandise in the sale of the vehicle. In particular, exhaust emissions from the rear seat of a diesel engine may cause deterioration of merchandise, discomfort and motion sickness of the vehicle.

However, conventional catalytic reactors, plasma reactors, or silencers have been developed in separate concepts. This has resulted in human, time and material waste.

In addition, the conventional oxidation catalyst for diesel engines cannot satisfy the tightened exhaust gas regulations, and the performance for NOx reduction is remarkably degraded.

In addition, as regulations on dust as well as NOx are tightened, existing catalysts cannot cope with the regulation properly.

The present invention was created to solve the above problems, and combines the function of a silencer and the function of a plasma reactor, so that the emission reduction and exhaust discharge sound of a diesel engine can be improved, and the exhaust gas regulation can be appropriately responded. The object is to provide a device for reducing harmful substances employing a silencer.

1 is a schematic cross-sectional view showing the configuration of a device for reducing harmful substances employing a silencer according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10. Housing

21,22,23,24. pipe

100. Silencer

200. Plasma Reactor

In order to achieve the above object, the apparatus for reducing harmful substances employing the silencer of the present invention includes a housing in which a plurality of chambers are formed, and a pipe in which the exhaust gas discharged from the engine of the vehicle is circulated through the housing. It has been provided with a silencer; And a plasma reactor installed in communication with the pipe so as to reduce harmful substances contained in the exhaust gas while the exhaust gas is circulated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a schematic diagram showing a schematic diagram of a device for reducing harmful substances employing a silencer according to the present invention.

Referring to each of the drawings, the apparatus for reducing harmful substances employing the silencer according to the present invention is substantially in the form of a box, the housing 10 is formed with a plurality of chambers, the housing 10 is installed from the engine of the vehicle The silencer 100 is provided with pipes 21, 22, 23, and 24 for circulating the exhaust gas, and the pipes 21, 22, 23, and 24 provided in the housing 10 communicate with each other. It is configured to include a plasma reactor 200 is installed so that the exhaust gas is circulated to reduce the harmful substances contained in the exhaust gas.

The chamber consists of three first, second, third chambers (11, 12, 13) from the top of the housing (10), in particular, a plurality of pipes (21, 22) installed in the second chamber (12) Holes 21a and 22a are formed to allow the exhaust gas to flow.

The plasma reactor 200 includes a cylinder 31 installed in the housing 10 and provided with exhaust gas circulating through the housing 10 to be discharged to the outside of the housing 10, and the cylinder 31. Power supply for supplying power to the insulating members (32, 33) provided at both ends, the electrode members (34) supported by the insulating members (32, 33) and installed in the cylinder (31), and the electrode member (34) It is configured to include a supply device (40).

Here, the cylinder 31 is installed to be perpendicular to the housing 10, the electrode member 34 is installed in the longitudinal direction of the cylinder 31.

The power supply is connected to the cylinder 31 to be grounded, and the insulating members 32 and 33 are made of ceramic.

A pipe 21 forming an inlet to allow exhaust gas to flow therein is connected to the first chamber 11, and the pipe 24 constituting the exhaust port is discharged through the plasma reactor 200 to discharge the exhaust gas through the plasma reactor 200. Is installed on one side of the cylinder 31. That is, it is connected to the cylinder 31 installed on the outside of the housing 10.

Referring to the operation of the hazardous substance reducing device employing the silencer according to the present invention having the configuration as described above are as follows.

Referring back to the drawings, in the hazardous substance reduction apparatus employing the silencer according to the present invention, the exhaust gas of the diesel engine passing through the exhaust pipe is introduced into the plasma reactor 200 through the inlet of the silencer 100. The exhaust gas thus introduced is partially introduced into the second chamber 12 of the resonator through the holes 21a and 22a of the pipes 21 and 22, and then flows into the third chamber 13. Meet the mainstream of

At this time, the chambers 11, 12, 13 are designed for reducing a specific frequency mapped by the engine, which in turn reduces exhaust gas noise of a specific frequency through one or two rotational flows in the silencer 100.

The exhaust gas with reduced noise is introduced into the plasma reactor 200 located in the center of the housing 10 to reduce the harmful substances of the exhaust gas including particulate matter and then exit through the outlet. When power is applied to the electrode member 34 from the power supply device 40, that is, when a high voltage is applied to the electrode member 34, a corona discharge is formed inside the cylinder 31 (that is, the plasma region). However, the electrons present in the corona thus formed collide with oxygen, nitrogen, water vapor, and the like in the harmful substances of the exhaust gas including the particulate matter introduced due to high energy to form various radicals. The generated radicals react with the harmful substances in the exhaust gas and are converted into other substances to remove the harmful substances.

As described above, the apparatus for reducing harmful substances employing the silencer according to the present invention has the following effects.

By using a silencer for reducing the noise of the exhaust gas and a plasma reactor for reducing the harmful substances contained in the exhaust gas, the exhaust discharge sound of the vehicle is lowered and the exhaust gas can be regulated.

In addition, since the silencer and the plasma reactor are integrally formed, the number of parts is reduced and the manufacturing process is simplified. This can reduce the weight of the product, it is possible to reduce the cost.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (8)

A silencer having a housing in which a plurality of chambers are formed, and a pipe installed in the housing to allow exhaust gas discharged from the engine of the vehicle to circulate the chamber; And a plasma reactor installed in communication with the pipe so as to reduce harmful substances contained in the exhaust gas while the exhaust gas is circulated. The method of claim 1, The chamber is a hazardous material reduction device employing a silencer, characterized in that consisting of three first, second, third chambers. The method of claim 2, And a plurality of holes are formed in the pipe installed in the second chamber so that exhaust gas flows. The method of claim 2, The inlet of the pipe is installed in the first chamber so that the exhaust gas is introduced, the outlet of the pipe is installed on one side of the plasma reactor so that the exhaust gas is discharged through the plasma reactor, reducing the harmful substances employing the silencer, characterized in that Device. The method of claim 1, The plasma reactor, A cylinder installed in the housing and provided to allow exhaust gas circulating through the housing to be discharged to the outside of the housing; Insulating members provided at both ends of the cylinder; An electrode member supported by the insulating member and installed in the cylinder; And a power supply device for supplying power to the electrode member. The method of claim 5, The cylinder is installed orthogonal to the housing, the electrode member is a hazardous substance reduction device employing a silencer, characterized in that installed in the longitudinal direction of the cylinder. The method of claim 5, The power supply device is a hazardous substance reduction device employing a silencer, characterized in that installed in the ground connected to the cylinder. The method of claim 5, The insulation member is a harmful substance reduction device employing a silencer, characterized in that the ceramic comprises a.