KR20010009466A - Filter with noiseproof function for diesel engine car - Google Patents

Abstract

PURPOSE: A noise preventing filtering apparatus is provided to reduce environmental pollution caused by gas emission and is apt to be applicable in the existing vehicle by adding anti-nose function, keeping the same size and shape as the existing muffler. CONSTITUTION: An apparatus comprises a cylindrical main body(2) sectioned, by a diaphragm(4), into a first compartment(6) and a second compartment(8) which is relatively wider than the other compartments, and into a third compartment(14) and a fourth compartment(16) with a porous plate(10) interposed between the second compartment and the third chamber and a porous plate(12) interposed between the third compartment and the fourth compartment. The first compartment is connected with an exhaust pipe(18) having a safety valve(22), and the fourth compartment is connected with a discharge pipe(20). The diaphragm has at a lower portion thereof a communicating hole communicated to the second compartment, at an entrance thereof a filter, and at an upper portion thereof a connection pipe(28) extended into the second compartment. One or more dust collecting bags are installed within the second compartment, and filters(40,42) are attached to porous plates(10,12), respectively.

Description

Filter device for diesel engine vehicle with noise prevention function {Filter with noiseproof function for diesel engine car}

The present invention is connected to the exhaust pipe of a variety of diesel engine-equipped vehicles using diesel fuel as a noise suppressor to prevent environmental pollution due to exhaust gases by filtering smoke and various harmful substances generated during combustion as well as a silencer. It relates to a filtration device for a diesel engine vehicle having a.

In advanced countries with a high penetration rate of automobiles, air pollution caused by exhaust gas has reached a serious level, and the air pollution caused by these automobiles is known to emit significantly higher pollutants than diesel-powered diesel fueled vehicles. These pollutants emit various harmful substances such as sulfur oxides (SO2), nitrogen oxides (NOX), hydrocarbons (HC), unburned hydrocarbons (UHC), and so on. Therefore, the countermeasure against this is urgent.

The present invention thus prevents air pollution by filtering various harmful substances generated during incomplete combustion as well as smoke generated during combustion, and furthermore, by adding a function as a silencer while maintaining the size and shape of the existing silencer. The purpose of the present invention is to provide a diesel engine filter device having a noise prevention function that can be easily applied.

In order to achieve the above object, the present invention divides the inner body of the cylinder into several compartments from the inlet side, and installs a dust collecting bag or a cylindrical filter connected to the exhaust pipe in one compartment, and the other side uses a porous plate. The filter is attached to one side of each of the perforated plates by dividing into several compartments, so that the exhaust gas passes through several compartments, and the noise is attenuated. It was filtered.

In the above, the dust collecting bag or the cylindrical filter installed in the first compartment has a purpose of removing smoke, and the dust collecting bag may be installed as a bag-type filtration type, and a metal mesh is supported outside or inside and outside. In addition, it is possible to provide protection when expanding by a strong exhaust pressure, and the cylindrical filter may be formed by forming a fiber or cloth of a suitable material as a filter between the double wire mesh, and the dust bag or the cylindrical body used in the present invention. The filter is satisfied as long as it can effectively filter soot regardless of its form or material.

In the above, the filter formed by using the porous plate is usually formed by attaching and forming a heat-resistant nonwoven fabric on both sides of the glass fiber mat, but this does not need to be specified, and nitrogen is passed through the exhaust gas from which the smoke is removed through the first compartment. It is satisfied if it is the structure which can filter an oxide.

In one embodiment, when the filter is formed of a glass fiber mat having a heat resistant nonwoven fabric attached thereto, when the glass fiber mat is impregnated with a reduction catalyst of nitrogen oxide (NOX), more effective filtration can be expected.

That is because the need to first remove the sulfur dioxide to remove nitrogen oxides primary filter has to ever remove the sulfur dioxide, the second-order filter of the glass fiber mat copper nitrate (CU (NO _{3) 2)} of alumina (AL ₂ O ₃ ) After mixing with heat treatment and applying it, copper (CU) on the surface of alumina acts as a reducing catalyst for nitrogen oxides.

However, it is preferable that the dust collecting bag and the filter used in the present invention be replaceable by forming an opening plate in the main body as a replaceable type.

In addition, in the configuration of the present invention, the exhaust gas is accompanied with a strong pressure during the explosion stroke, and when the dust bag is damaged by the pressure discharged from the inlet of the exhaust pipe to maximize the noise prevention function In the case of self-defense, a blocking plate may be formed at the end of the exhaust pipe to be distributed and discharged to the side thereof.

In addition, if the filtration function is deteriorated due to dust trapped on the dust collection bag and the filter during long time use, the internal pressure may increase, which may cause a danger. In addition, by installing a safety valve in the exhaust pipe, it can be used with confidence at all times.

In addition, as shown in Figure 2, a separate compartment is provided at the inlet side of the main body to allow the exhaust gas to flow through the compartment, and at this time, a through-hole with a filter is formed between the compartment and the compartment on the other side to prevent excessive pressure from the engine. When it occurs, it is to be immediately discharged to the other compartment through the filter without going through the dust collection bag, and serves to improve the noise prevention function in this case.

Figure 4 is a further embodiment of the present invention, the one compartment and the other compartment of the main body to communicate with a separate communication pipe from the outside to provide an auxiliary compartment in the communication pipe, the auxiliary compartment is installed in the auxiliary compartment This also allows the replacement of the secondary dust collection bag by using the opening and closing plate, which can extend the life of the dust collection bag by advancing the replacement time compared to the dust collection bag of one compartment.

1: A perspective view of a fragment of the present invention.

2 is a side cross-sectional view of the present invention.

3 is a side cross-sectional view showing another embodiment of the present invention.

4 is a side cross-sectional view showing another embodiment of the present invention.

5 is a perspective view of a cylindrical filter used in another embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

(2)-body (4)-plate

(6)-Compartment (8) (8 ') (8 ")-Compartment

(10) (12)-Perforated Plate (14) (14 ') (14 ")-Compartment

(16) (16 ') (16 ")-Compartment (18)-Exhaust Pipe

(20)-Drain tube (22)-Relief valve

(24)-Vertical (26)-Filter

(28) (28 ')-connector (30)-blocking plate

(32)-outlet (34) (34 ') (34 ") (36) (36')-dust bag

(38)-cylindrical filter (40) (42)-filter

(44)-pressure sensor (46)-communication tube

(48)-Secondary Compartment (50)-Secondary Dust Bag

Hereinafter, the specific technical configuration and operation of the present invention will be described in detail.

Fig. 1 is a perspective view of a part of the present invention, in which a small first compartment 6 is provided by using a diaphragm 4 from an entrance side in a main body 2 composed of a cylindrical body on a side and an oval side. On the other side, the third compartment 14 and the fourth compartment 16 are provided by forming several porous plates 10 and 12 with a slightly wider second compartment 8 therebetween.

In the above, the first compartment 6 is connected to the exhaust pipe 18 of the engine having a safety valve 22, the discharge pipe 20 is connected to the fourth compartment 16, the lower portion of the compartment 4 A through hole 24 is formed in communication with the second compartment 8 so that the filter 26 is attached and fixed at the inlet thereof, and the connecting pipe 28 extends long inside the second compartment 8 above the diaphragm 4. Form a connection.

An end portion of the connecting pipe 28 extending to the inner upper portion of the second compartment 8 is formed to connect the blocking plate 30 at appropriate intervals so that the outlet 32 is formed in all directions, and the connecting pipe 28 is formed. In order to filter the soot contained in the exhaust gas by connecting a dust collecting bag (34) (36) or a cylindrical filter (38) formed by inserting a fiber or fabric having a suitable material as a filter between the metal mesh. .

In the above, the dust collection bags 34 and 36 have a bag shape, and can be used by connecting one or more types of vehicles, that is, small and large, and used for a large vehicle in which high pressure is generated during an explosion stroke. If possible, the metal mesh may be wrapped to protect the outside.

The perforated plates 10 and 12 constituting the third compartment 14 and the fourth compartment 16 are fixed to the filters 40 and 42 on one side of the inlet side, respectively, and the filters 40 and 42 are fixed. ) Is satisfied as long as it can filter NOx contained in exhaust gas without needing to be specified.

However, in order to remove nitrogen oxides through the filters 40 and 42, the sulfur sulphate gas must be removed first, so that the effective filtration function can be exerted. The filter 40 of the third compartment 14 filters the sulphite gas. The nitrogen oxide is preferably such that the filter 42 of the fourth compartment 16 is filtered.

That is, the filter 40 of the third compartment 14 is used for the purpose of maintaining the performance of the filter 42 of the fourth compartment 16.

The most commonly used filter of the present invention is a heat-resistant nonwoven fabric attached to both sides of a glass fiber mat, which can be expected to have a more effective filtration function when impregnated with a reduction catalyst of nitrogen oxide (NOX) on the glass fiber mat. .

Dust collecting bags 34, 36 and various filters 26, 38, 40, 42 used in the present invention are replaceable, and the left and right long opening and closing plates may be exposed to the main body 2 so that all compartments ( (Not shown) may be installed, and the second chamber 8 may be provided with a pressure sensor 44 to check the replacement time through the instrument panel of the cab.

FIG. 3 shows another embodiment of the present invention, in which the first compartment 8 'is formed wide so that the exhaust pipe 18 of the engine is formed to extend above the inner side of the first compartment 8'. ') Can also be used by connecting the dust collection bag (34') or a cylindrical filter.

FIG. 4 shows another embodiment of the present invention, in which a first compartment 8 " is also widely formed to connect a dust collecting bag 34 " or a cylindrical filter to the first compartment 8 " The first compartment 8 "and the second compartment 14" are connected to the communication pipe 46 from the outside, but the auxiliary pipe 48 is provided in the communication pipe 46, and the secondary dust collection is performed in the auxiliary compartment 48 therein. The pocket 50 is installed, and the auxiliary compartment 48 also allows the replacement of the auxiliary dust collecting bag 50 using an opening / closing plate (not shown).

They consist entirely of three compartments and may be suitable for small vehicles with low double pressure.

Since the present invention configured as described above has a size and a shape similar to the existing silencer, it may be used by mounting it at the same position as before.

However, when used in large vehicles where high pressure is generated from the engine, it may be used in parallel with the existing silencer.

When the exhaust gas discharged to the explosion stroke of the engine flows into the first compartment 6 through the exhaust pipe 18, it hits the diaphragm 4 in front of it and the noise and pressure are primarily weakened.

Exhaust gas of the first compartment 6 moves to the second compartment 8 through the connecting pipe 28. The exhaust gas of the first compartment 6 is connected to the blocking plate 30 at the end of the connecting pipe 28 before entering the second compartment 8. Noise and pressure are secondarily weakened as they are restrained, and soot is filtered out while being discharged in all directions in the dust collecting bags 34 and 36 or the cylindrical filter 38.

The exhaust gas after the soot is filtered is pushed by the continuous inflow of the exhaust gas, and passes through the filter 40 and the porous plate 10 to the third compartment 14. The noise and pressure are also reduced and included in the exhaust gas. The sulfite gas thus obtained is filtered by the filter 40.

The exhaust gas moving from the third compartment 14 to the fourth compartment 16 passes through the filter 42 and the porous pack 12, and the noise and pressure are reduced, and the filter of the third compartment 14 ( Removal of sulfurous acid gas by 40) filter the nitrogen oxide (NOX) provided a condition, so that only the harmless components are discharged through the discharge pipe (20).

However, at this time, if the exhaust gas is introduced at an excessive EH pressure through the exhaust pipe 18, a part of the dust collecting bag 34, 36 or the cylindrical filter (through the through-hole 24 that the filter 26 blocks the inlet) It is discharged through the second compartment 8 immediately without passing through 38, which is performed by the filters 40 and 42 of the third compartment 14 and the fourth compartment 16 in parallel with the soot filtration function.

In addition, the internal pressure increases when the permeability drops after the replacement time of the dust collecting bags 34, 36 and the various filters 26, 38, 40, and 42, and when the internal pressure increases, the pressure sensor 44 It will inform you of the replacement time by the pressure detection by using.

If the replacement time passes or excessive pressure is generated from the engine, the safety valve 22 attached to the exhaust pipe 18 is operated, so that it can be used with confidence.

As another embodiment, as shown in Figure 3, by installing a dust collecting bag 34 'or a cylindrical filter in the first compartment (8') consisting of a total of three compartments, as one compartment is reduced, the function as a silencer is somewhat It is degraded, but the basic function is available as it is satisfied.

4 shows another embodiment of the present invention, in which an auxiliary compartment 48 is formed in an external communication pipe 46 connecting the first compartment 8 ″ and the second compartment 14 ″ to collect dust therein. By installing the pocket 50, it is possible to extend the replacement time of the dust collecting bag 34 "by replacing the auxiliary dust collecting bag 50.

As described above, the present invention is useful as a filter device capable of preventing air pollution simultaneously by effectively filtering smoke and various harmful substances contained in the exhaust gas as well as functioning as a silencer to prevent air pollution. It is an invention.

Claims (4)

At least one dust bag 34, 34 'or 34 " is formed at the inlet side of the main body 2, which is formed of an elongated body, to form a wide compartment 8, 8', 8 " ) 36, and the other side of the porous plate 10, 12 is formed to connect at appropriate intervals to attach and fix the filter 40, 42 on one side of the porous plate (10) (12) The diesel engine vehicle filtration device having a noise prevention function, characterized in that by forming the discharge pipe 20 connected to the side. The connecting pipe (28) according to claim 1, wherein a separate compartment (6) is provided at the inlet side of the main body (2) and connected to an exhaust pipe (18), and the connecting pipe (28) extending from the compartment (6) to the other compartment (8). Forming a filter unit for a diesel engine vehicle having a noise prevention function, characterized in that it is installed by connecting the dust collecting bag (34) (36) through the connecting pipe (28). The diesel engine vehicle filtration with noise prevention function according to claim 1 or 2, wherein a cylindrical filter (38) having a fiber or cloth having a filtration function is formed between the metal meshes instead of the dust collecting bag. Device. The compartment 8 "and the other compartment 14", in which the dust collecting bag or the cylindrical filter are installed, are connected to the communication pipe 42 from the outside, and the communication pipe 42 is installed. ) Has a secondary compartment 44, the secondary dust collecting bag 46 is installed, characterized in that the diesel engine vehicle filtration device having a noise prevention function.