KR100769700B1 - Apparatus for preventing flowing backward of exhaust gas - Google Patents

Abstract

An apparatus for preventing exhaust gas from flowing reversely is provided to improve the combustion efficiency of an internal combustion engine and a boiler by reducing the exhaust resistance, backward flow, and air resistance of the exhaust gas. An apparatus for preventing exhaust gas from flowing reversely includes a fixed tube vane(112), a fixed tube(110), a flow pipe(111), and a dual exhaust pipe(120). The fixed tube vane is formed to be inserted into an exhaust pipe extended from an internal combustion engine. A part of the fixed tube vane projects outwardly to form a first passage(W1) through which exhaust gas passes. The first passage is formed in a Venturi shape. The fixed tube is formed to cover the fixed tube vane. An end portion of the fixed tube projects outside more than the fixed tube vane. A second passage(W2) is formed to pass the exhaust gas which is passed through the first passage. The second passage is formed in the Venturi shape. The dual exhaust pipe is mounted to the fixed tube. A third passage(W3) is formed between the fixed tube and the dual exhaust pipe.

Description

Apparatus for preventing flowing backward of exhaust gas}

1 is a chassis diagram of a back pressure removing backflow prevention device according to a preferred embodiment of the present invention,

FIG. 2 is a chassis view of a state in which a portion is removed by cutting along the line A-A 'of FIG. 1; FIG.

3 is a cross-sectional view taken along the line A-A 'of FIG.

4 is a rear view of FIG. 1,

5 is a cross-sectional view showing the flow of exhaust gas and exhaust backflow when the back pressure removing backflow prevention device according to the present invention is installed in an exhaust pipe of an internal combustion engine;

<Description of the code | symbol about the principal part of drawing>

(100): back pressure removing backflow prevention device (110): fixed tube

(111): fixed tube flow port (112): fixed tube wing

113: pressurization portion 120: double exhaust pipe

130: triple exhaust pipe

The present invention relates to a back pressure removing backflow prevention device mounted on an exhaust pipe end or a boiler communication end of an internal combustion engine. In particular, the present invention relates to an exhaust gas generated by combustion of fuel for operation of an internal combustion engine or a boiler. The present invention relates to a back pressure removing backflow prevention device for removing resistance and exhaust backflow to increase combustion efficiency of an internal combustion engine and a boiler.

In general, the exhaust gas, a pollutant burned in an internal combustion engine, is discharged at a pressure of about 3-5 kg / cm 2 and at a high temperature and a high pressure of about 600 ° C., and thus a catalytic device and a silencer are essential.

When the exhaust gas combusted by the internal combustion engine is discharged, a vacuum is formed in the exhaust manifold, and a primary exhaust resistance is formed to prevent exhaust gas emission, and the flow rate of the exhaust gas is significantly increased while passing through the honeycomb purifier of the three-way catalyst. The secondary exhaust resistance is reduced and is formed, and when it enters the silencer, it is discharged through a multi-stage partition and the third exhaust resistance is formed.

In the process of discharging the exhaust gas as described above, the silencer is usually designed with a volume of about 15-20 times the amount of exhaust gas, so that the exhaust resistance can not be generated. Increased fuel consumption and increased pollution are occurring.

Therefore, it is possible to expect the effects of improved fuel efficiency, power energy, and thermal energy by improving the combustion efficiency only by smoothly exhausting the exhaust gas, and various proposals are known in this context.

In the case of a boiler, when the wind blows against the communication, the outside air flows back and the wind penetrates into the combustion chamber, causing incomplete combustion. Because of this fall and the problem of lowering the thermal energy occurs, a lot of research is in progress to improve this.

Korean Patent Laid-Open Publication No. 2000-56951 proposes an automobile exhaust box using an air flow, which combines a streamlined exhaust port body with a tail pipe by using an air flow according to the driving of a car to pass through the streamlined body. The low pressure zone is formed according to the flow rate, and the exhaust gas is rapidly sucked up by the low pressure to help the exhaust.

However, it is difficult to commercialize such a streamlined exhaust port body due to its structurally large and complicated disadvantages.

According to the tail pipe of the main silencer having the vortex generating device of Korean Patent Laid-Open Publication No. 1998-75223, the vortex vane is provided to be rotated by the exhaust gas in the middle of the tail pipe. It is proposed, but this is rather difficult to provide a resistance to the flow of exhaust gas and the structural distortion caused by heat.

According to the exhaust gas discharge device using the vortex of the patent registration No. 257874, a separate pipe is added to the front of the silencer formed in the exhaust gas path to introduce external air, and a vane is formed to form the inflow of outside air into the vortex. It is made by forming a damper for regulating the outside air inflow so as to synchronize with the opening of the throttle valve.

However, this forms a sub duct through which outside air flows to the front of the silencer for supplying the vortex to the exhaust gas path and removing the exhaust noise, so that the exhaust noise leaks into the sub duct, which generates a lot of noise and interlocks with the engine throttle valve. Since the damper is configured to control the outside air, the structure and facilities are complicated.

In addition, the application No. 20-0010194 is to form a vortex by collecting the air flow according to the driving of the car to form a plurality of inlet holes to form a screw plate of the iron piece and plate in the outside air inlet and fixed in the exhaust port.

However, it forms a vortex with iron plate and screw plate in the expanded fallopian tube, and because of the narrow passage of exhaust, it is structurally unstable, induces exhaust resistance and backflow, and aerodynamic noise is induced at the end of the silencer.

Said inventions of the seamen have the advantage of improving the output and fuel efficiency by realizing the flow steam, but these proposals also have the disadvantage of generating aerodynamic noise at the end of the muffler at high speeds while stopping or driving at low speeds. .

The present invention is to solve the above problems by applying the triple venturi principle to form a structure to remove the exhaust resistance, reducing the reverse flow suction discharge and atmospheric resistance.

The present invention has been made in consideration of the above problems, and an object of the present invention is the exhaust resistance and exhaust backflow, which are inherently generated in discharging gas generated by combustion of fuel for internal combustion engine and boiler operation to the outside. It is to provide a back pressure removing backflow prevention device to remove the resistance to smoothly discharge the exhaust gas to increase the combustion efficiency of the internal combustion engine or boiler.

Still another object of the present invention is to provide a back pressure removing backflow prevention device having a structure that can be easily attached and detached without changing the structure of the exhaust pipe of the internal combustion engine or the boiler communication end.

The present invention to achieve the object as described above and to perform the problem for eliminating the conventional defect has a structure that can be fitted to the end of the exhaust pipe 10 or the boiler communication end extending from the internal combustion engine while the portion is outward than the exhaust pipe end. Protruding to form a first flow path (W1) for exhaust gas is discharged, the first flow path (W1) is a fixed tube wing having a first venturi structure (V1) is a structure that is reduced in area toward the exhaust gas discharge direction (112);

The second end surrounds the fixed tube wing 112 and protrudes outward from the fixed tube wing 112, and the second channel passes through the first channel W1 of the fixed tube wing 112 again. (W2) is formed, the second flow path (W2) is a fixed tube (110) having a second venturi structure (V2) is a structure in which the area is reduced in the direction in which the exhaust gas is discharged;

A plurality of fixed tube flow holes 111 are formed along the periphery of the predetermined position of the inside of the fixed tube 110 (part connected with the fixed tube wing 112),

It is connected to the fixed tube 110 to have a structure surrounding the outer periphery of the fixed tube 110 and to form a space between the fixed tube 110 to form a third flow path (W3) for the exhaust backflow is sucked, Three euros (W3) is characterized in that it comprises a; double exhaust pipe 120 formed to have a third venturi structure (V3) is reduced in area toward the inside.

In addition, the present invention is the fixed pipe wing 112 is formed to have a larger diameter than the exhaust pipe 10 or communication so that the installation can be made by simply fitting without changing the structure of the exhaust pipe 10 or communication, exhaust pipe ( 10) or the interior is characterized in that the plurality of pressing portion 113 is provided so that the coupling by the communication and interference fit.

In addition, the present invention is provided with a triple exhaust pipe 130 is installed so as to surround the circumference of the double exhaust pipe while maintaining a predetermined interval with the double exhaust pipe, the triple exhaust pipe 130 is protruding of the fixed tube wings 112 It is characterized in that the coupling is made by being connected to the opposite side of the part.

In addition, the present invention is characterized in that the diameter (D2) of the end of the fixed tube wing 112 is greater than or equal to the diameter (D1) of the end of the fixed tube (110).
In addition, the present invention has a structure that can be inserted into the exhaust pipe 10 or communication extending from the internal combustion engine, a part of which is installed outside the end of the exhaust pipe or the communication end is fixed tube wings 112 to form a first flow path for exhaust gas is discharged );
A fixed tube 110 formed to surround the fixed tube wing 112;
An end portion of the fixed tube 110 further protrudes outward from the fixed tube wing 112 to form a second channel so that the exhaust gas passing through the first channel of the fixed tube wing 112 passes again.
A predetermined portion of the inside of the fixed tube 110 (position connected to the fixed tube wings) is formed with a plurality of fixed tube flow holes 111 along the circumference, to the fixed tube 110 to have a structure surrounding the outer periphery of the fixed tube 110 And a double exhaust pipe 120 connected to the fixed pipe 110 to form a space between the fixed pipe 110 and a third flow path through which the exhaust backflow is sucked.

The back pressure removing backflow prevention device of the present invention having the above characteristics is installed at the end of the exhaust pipe or the end of the boiler communication line extending from the internal combustion engine to reduce exhaust resistance and atmospheric resistance and to block the backflow of the exhaust gas, thereby preventing the internal combustion engine or the boiler. Improved combustion efficiency to prevent fuel consumption and harmful substances caused by incomplete combustion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of a back pressure removing backflow prevention apparatus according to a preferred embodiment of the present invention, Figure 2 is a perspective view of a state in which a portion is removed by cutting along the line AA 'of Figure 1, Figure 3 Is a cross-sectional view taken along the line AA ′ of FIG. 1, and FIG. 4 is a rear view of FIG. 1. 1 to 4, the back pressure removing backflow prevention device 100 according to a preferred embodiment of the present invention is fixed tube 110 and fixed tube wings 112, double exhaust pipe 120 and triple exhaust pipe 130 It consists of. At this time, the fixed tube 110 and the fixed tube wing 112, the double exhaust pipe 120 and the triple exhaust pipe 130 is formed to have a different diameter and the double exhaust pipe 120 is installed on the outside of the fixed pipe 110. The fixed pipe wing 112 is installed inside the fixed pipe 110, and the triple exhaust pipe 130 is installed on the outside of the double exhaust pipe 120. Hereinafter, each component will be described in detail. As follows.

The fixed tube wing 112 is installed in the exhaust pipe 10 or the boiler communication extending from the internal combustion engine, so as to protrude from the end of the exhaust pipe 10 or the communication so as to form a first flow path (W1) through which exhaust gas is discharged. It is provided, and is configured to form a first venturi structure (V1) in which the area of the flow path is reduced toward the end of the exhaust gas is discharged. The fixed tube wing 112 formed as described above enables the rapid and smooth discharge of the exhaust gas by decreasing the exhaust resistance and atmospheric resistance by increasing the flow rate of the exhaust gas toward the end portion of which the area of the first passage W1 decreases.

On the other hand, the fixed tube wing 112 is formed to have a larger diameter than the exhaust pipe 10 or communication so that the installation can be made by simply fitting without changing the structure of the exhaust pipe 10 or communication, the exhaust pipe 10 or A plurality of pressing portions 113 are provided therein to allow the coupling by the communication and the interference fit. The pressing portion 113 is formed to have a predetermined interval along the inner circumferential surface of the fixed tube wing 112 and fixed tube wing 112 and the exhaust pipe 10 or the fixed tube wing 112 when in close contact with the exhaust pipe or communication when combined with the fixed tube It will provide a firm coupling force of the wing (112).

At this time, when the fastening hole 132 into which the fixing bolt B is inserted for a more robust coupling of the fixed tube wing 112 is formed at a predetermined position of the triple exhaust pipe 130 (when the triple exhaust pipe 130 is not installed). Is formed at a predetermined position of the double exhaust pipe 120], and the fixing bolt (B) inserted through the fastening hole 132 is fastened to the exhaust pipe 10 or the communication to be separated from the fixed pipe wing 112 Will be prevented.

The fixed tube 110 is wrapped around the fixed tube wing 112 and protrudes outward from the fixed tube wing 112, the exhaust gas passing through the first flow path (W1) of the fixed tube wing 112 is made to pass again. A second channel W2 is formed, and a second venturi structure V2 is formed in which the area of the second channel W2 decreases in a direction in which the exhaust gas is discharged.

At this time, the end diameter (D2) of the fixed tube wing 112 is designed to be larger than the end diameter (D1) of the fixed tube 110, which is fixed tube 110 than the first flow path (W1) formed by the fixed tube wing (112). This is to increase the flow rate of the second flow path (W2) formed by the) to quickly exhaust the exhaust gas. By such a configuration, the exhaust gas is quickly discharged to the outside through the first venturi and the second venturi formed in the fixed tube wing 112 and the fixed tube 110.

The double exhaust pipe 120 forms a third passage W3 through which the exhaust gas flowing back flows, and is connected to the fixed pipe 110 so as to have a structure surrounding the outer circumference of the fixed pipe 110. To form a third venturi structure V3 in which an area of the third flow path W3 decreases inwardly (that is, in the direction of the exhaust pipe 10) so that gas (hereinafter, referred to as “exhaust backflow”) can be more smoothly introduced. Consists of. The reason for making the third venturi as described above is to have a structure capable of quickly discharging the exhaust backflow mainly along the inner wall of the double exhaust pipe 120.

Inside the fixed tube 110 (part connected to the fixed tube wing 112) a predetermined position is formed a plurality of fixed tube flow holes 111 along the periphery, which is exhaust gas flowing along the outer wall of the double exhaust pipe 120 That is, the exhaust backflow flows into the inside of the fixed pipe 110 through the fixed pipe flow port 111 and is quickly discharged to the outside with the exhaust gas discharged through the fixed pipe flow port 111. .

The triple exhaust pipe 130 is installed to surround the circumference of the double exhaust pipe while maintaining a predetermined distance from the dual exhaust pipe, and the triple exhaust pipe 130 is opposite to the protruding portion of the fixed tube wing 112. The connection is made.

The back pressure removal backflow prevention device 100 configured as described above may be installed and used at the end of the exhaust pipe of the internal combustion engine or the end of the boiler communication.

5 is a cross-sectional view showing the flow of exhaust gas and exhaust backflow when the back pressure removing backflow prevention device according to the present invention is installed in the exhaust pipe of the internal combustion engine. Referring to Figure 5, the exhaust gas generated by the combustion of the fuel for the operation of the internal combustion engine is discharged through the exhaust pipe 10 and the fixed tube wing 112, the first venturi structure formed by the fixed tube wing 112 ( Since the flow velocity increases as the exhaust gas G1 passes through the region V1), the exhaust gas can be quickly and smoothly discharged.

Meanwhile, the exhaust gas discharged through the fixed tube wing 112 passes through the end of the fixed tube 110. In this case, the exhaust gas G2 passing through the end of the fixed tube 110 is formed at the end of the fixed tube 110. As it passes through the second venturi structure (V2) region, the flow velocity is further increased and is quickly discharged to the outside.

Meanwhile, when the exhaust gas is discharged, a part of the exhaust gas inevitably flows back to generate an exhaust backflow, and the exhaust backflow G3 generated in this way is the third venturi structure V3 formed by the double exhaust pipe 120. Due to the low pressure or vacuum pressure caused by the rapid movement along the inner wall of the double exhaust pipe 120 inwards quickly. The exhaust backflow G3 moved in this way is rapidly introduced into the fixed tube 110 through the flow port 111 installed in the fixed tube 110 due to the low pressure or the vacuum pressure generated between the fixed tube wing 112 and the fixed tube 110. As it flows (G4), the exhaust backflow eventually entering the inside of the fixed pipe 110 is quickly discharged to the outside with the exhaust gas.

As described above, the present invention is exhausted by the first venturi structure (V1) by the fixed tube wing 112, the second venturi structure (V2) by the fixed tube 110, the third venturi structure (V3) by the double exhaust pipe. The gas is effectively discharged and the exhaust backflow moves the double exhaust pipe along the inner wall, enters the inside of the fixed pipe again through the fixed pipe flow port 111, and then discharges to the outside to increase the combustion efficiency of the internal combustion engine or the boiler. It becomes possible.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The present invention removes the exhaust resistance and exhaust backflow of the exhaust gas and reduces the air resistance as described above, thereby improving fuel efficiency and reducing smoke due to improved combustion efficiency of internal combustion engines and boilers, achieving excellent operating performance and power energy and thermal energy. Was able to maximize.

In addition, it can be easily installed on the end of the exhaust pipe of the internal combustion engine or the end of the boiler communication without structural change, thereby improving compatibility with various devices.

Claims (5)

While having a structure that can be fitted into the exhaust pipe 10 or the communication extending from the internal combustion engine, a part of which protrudes outward from the end of the exhaust pipe or the communication end to form a first flow path (W1) through which exhaust gas is discharged. W1 may include: a fixed tube wing 112 having a first venturi structure V1 having a structure in which an area thereof decreases toward a direction in which exhaust gas is discharged; A fixed tube 110 formed to surround the fixed tube wing 112; An end portion of the fixed tube 110 protrudes outward from the fixed tube wing 112 so that the exhaust gas passing through the first channel W1 of the fixed tube wing 112 passes again. Is formed, the second flow path (W2) has a second venturi structure (V2) is a structure in which the area is reduced toward the direction in which the exhaust gas is discharged and the inside of the fixed tube 110 (part connected to the fixed tube wing 112) At a predetermined position of the plurality of fixed pipe flow port 111 is formed along the circumference, It is connected to the fixed tube 110 to have a structure surrounding the outer periphery of the fixed tube 110 to form a space between the fixed tube 110 to form a third flow path (W3) for the exhaust backflow is sucked, Back flow prevention backflow prevention device comprising a three-channel (W3); dual exhaust pipe (120) formed to have a third venturi structure (V3) is reduced in area toward the inside. The method of claim 1, The fixed tube wing 112 is formed to have a larger diameter than the exhaust pipe 10 or the communication so that the installation can be made by simply fitting without changing the structure of the exhaust pipe 10 or communication, the exhaust pipe 10 or communication Back pressure elimination backflow prevention device, characterized in that the interior is provided with a plurality of pressurizing portion 113 to be combined by the interference fit. The method of claim 2, The triple exhaust pipe 130 is installed to cover the circumference of the double exhaust pipe while maintaining a predetermined distance from the dual exhaust pipe, and the triple exhaust pipe 130 is opposite to the protruding portion of the fixed tube wing 112. Back pressure removal backflow prevention device characterized in that the coupling is made. The method of claim 1, The diameter of the end portion of the fixed tube blade 112 (D2) is greater than or equal to the diameter (D1) of the end portion of the fixed tube 110, back pressure removal backflow prevention device. A fixed tube wing 112 having a structure that can be fitted into the exhaust pipe 10 extending from the internal combustion engine or communicating with a portion of the exhaust pipe 10 or the communication pipe end to form a first flow path through which exhaust gas is discharged; A fixed tube 110 formed to surround the fixed tube wing 112; An end portion of the fixed tube 110 further protrudes outward from the fixed tube wing 112 to form a second channel so that the exhaust gas passing through the first channel of the fixed tube wing 112 passes again. A predetermined portion of the inside of the fixed tube 110 (position connected to the fixed tube wings) is formed with a plurality of fixed tube flow holes 111 along the circumference, to the fixed tube 110 to have a structure surrounding the outer periphery of the fixed tube 110 And a double exhaust pipe (120) connected to and installed to form a space between the fixed pipe (110) to form a third flow path through which the exhaust backflow is sucked.

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