KR20090035311A - Apparatus for preventing flowing backward of exhaust gas removed back-pressure - Google Patents

Abstract

A reverse current prevention device in which the back pressure is removed is provided to eject the ejected exhaust gas to the outside through a stationary tube. A reverse current prevention device in which the back pressure comprises: a stationary tube(100); a sub-exhaust pipe(110) covering the stationary tube; and a backflow gas path(120) in which the backflow gas is flowed between the stationary tube and the sub-exhaust pipe. The stationary tube is inserted at the end of an exhaust pipe extended from an engine. A part of the stationary tube not be inserted protrudes to the exhaust pipe. The inside of the stationary tube is connected to the exhaust pipe. The stationary tube has a plurality of stationary tube transferring unit along the circumference. The backflow gas path is induced to the stationary tube inside through the stationary tube transferring unit.

Description

Apparatus for preventing flowing backward of exhaust gas removed back-pressure}

The present invention relates to exhaust gas pressure removal and backflow prevention (exhaust pulsation) device, and more particularly, the fixed pipe and the fixed pipe is formed at the end of the exhaust pipe of the internal combustion engine or the end of the boiler communication and formed with a plurality of fixed pipe flow holes along the outer peripheral surface And a secondary exhaust pipe formed between the fixed pipe and the discharge air flow path which is opened in the discharge direction of the exhaust gas from the fixed pipe flow port to secondary the reverse airflow gas (exhaust pulsation) flowing back out of the exhaust gas discharged. Induced by the backflow passage formed between the exhaust pipe and the fixed pipe, and the guided backflow gas is moved into the fixed pipe through the fixed pipe flow port and discharged to the outside along with the newly discharged exhaust gas, thereby preventing the backflow gas from flowing back into the exhaust pipe. can do.

As such, when the backflow gas is prevented from flowing back, the performance of the internal combustion engine can be improved, thereby improving fuel efficiency and reducing soot, maximizing thermal energy efficiency, and easily fitting the end of the exhaust pipe. The present invention relates to a back pressure removing backflow prevention device that can be conveniently installed to provide a user with convenience.

In general, the exhaust gas, a pollutant burned in an internal combustion engine, is discharged at a pressure of about 3 to 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 to form a primary exhaust resistance that prevents the exhaust gas from being discharged. Accordingly, secondary exhaust resistance is formed.

And the exhaust gas is discharged back to the partition consisting of a multi-stage as the silencer flows into the third exhaust resistance is formed.

In the exhaust gas discharge process, the silencer is usually designed to have a volume of about 15 to 20 times the exhaust volume, so that the exhaust resistance is generated, resulting in a decrease in power energy and fuel consumption increase and pollution of about 5 to 10%. Closing of substances is occurring.

Therefore, it is possible to expect the effects of improving fuel efficiency, improving fuel efficiency, power energy, and thermal energy 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, there is a problem in that it is difficult to commercialize because there is a structurally large and complicated disadvantage to attach the streamlined exhaust body to the car.

In addition, 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 rotated by the exhaust gas in the middle of the tail pipe. However, this is rather difficult to provide a resistance to disturb the flow of the exhaust gas and the structure distortion by heat.

In addition, according to the exhaust gas discharge device using the vortex of the patent registration No. 257874, a vane for additionally forming an external air inlet to the front end of the silencer formed in the exhaust gas path and forming an inflow of external air into the pipeline to vortex It is made by forming a damper for adjusting the inlet air to be synchronized 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 this sub duct, which generates a lot of noise. Since the damper for interlocking air control is configured, the damage of facility structure and facility becomes 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. .

Therefore, the present invention is devised to solve the above problems, it is inserted to the end of the exhaust pipe or the end of the boiler communication and is installed to surround the fixed tube and the fixed tube formed with a plurality of fixed tube flow holes along the outer peripheral surface, between the fixed tube and Including a secondary exhaust pipe to form a reverse air flow passage that is opened in the discharge direction of the exhaust gas from the fixed pipe flow port to guide the reverse air flow gas flowing back out of the exhaust gas to the reverse air flow path formed between the secondary exhaust pipe and the fixed pipe, Induced backflow gas is moved to the inside of the fixed tube through the fixed pipe flow port is discharged to the outside with the newly discharged exhaust gas, it is possible to prevent the backflow gas (exhaust pulsation) backflow into the exhaust pipe.

As such, when the backflow gas is prevented from flowing back, the performance of the internal combustion engine can be improved, thereby improving fuel efficiency and reducing soot, maximizing thermal energy efficiency, and easily fitting the end of the exhaust pipe. It is an object of the present invention to provide a back pressure removing backflow prevention device that can be installed in a convenient manner and can provide convenience to a user.

The present invention for achieving the above object, while having a structure that can be fitted to the end of the exhaust pipe extending from the internal combustion engine or the end of the boiler communication is not fitted portion protrudes outward from the end of the exhaust pipe, the inside is in communication with the exhaust pipe, A position adjacent to the end of the exhaust pipe comprises a fixed pipe formed with a plurality of fixed pipe flow holes along the circumference, and a secondary exhaust pipe installed to surround the fixed pipe, the exhaust pipe is discharged through the fixed pipe between the fixed pipe and the secondary exhaust pipe A backflow path is formed to allow the backflow gas to flow back in the gas, guide the backflow gas into the fixed pipe through the fixed pipe flow port, and discharge the backflow gas back to the outside.

Preferably, each end of the fixed tube and the exhaust pipe and the non-fixed end of the secondary exhaust pipe is formed in the center direction, the inner cross-sectional area of the bent portion of the secondary exhaust pipe is formed larger than the bent inner cross-sectional area of the fixed pipe.

In addition, an internal communication having a honeycomb structure is further provided at an end portion of the fixed tube that is not fixed to the exhaust pipe.

In addition, the inside of the fixed tube is installed inside the fixed tube flow port to minimize the collision with the exhaust gas, and the fixing pipe wing to discharge the exhaust gas quickly and smoothly by increasing the discharge speed of the exhaust gas is further provided.

And the fixed tube wings, each of the wings inside the fixed tube between the plurality of fixed tube flow port, and comprises a conical wing body located in the center of the plurality of wings in contact with each other.

In addition, the wing is formed to be bent at a constant angle relative to the discharge direction.

In addition, the wing tube having a honeycomb structure is further provided at an end portion of the fixing tube that is not fixed to the exhaust pipe.

In addition, one end is inserted between the fixed tube and the exhaust pipe, the cross section is formed to be inclined toward the center so that the cross-sectional area decreases toward the discharge direction of the exhaust gas to increase the speed of the exhaust gas, and communicate with the fixed tube flow port between the inner peripheral surface of the fixed tube. Fixing tube wings are further provided to form a second backflow passage.

And wing communication having a honeycomb (honeycomb) structure in the exhaust gas discharge direction end of the fixed tube blade is further provided.

As described above, according to the back pressure removing backflow prevention apparatus according to the present invention, the backflow gas backflowed out of the exhaust gas is guided to the backflow passage formed between the secondary exhaust pipe and the fixed pipe, and the induced backflow gas is fixed pipe It is moved to the inside of the fixed tube through the flow port is discharged to the outside with the newly discharged exhaust gas, it is possible to prevent the backflow gas flow into the exhaust pipe.

As such, when the exhaust gas pressure is removed by preventing the inflow of backflow gas, the performance of the internal combustion engine can be improved, thereby maximizing thermal energy efficiency by improving fuel efficiency and reducing soot, as well as the end of the exhaust pipe. It is a very useful and effective invention that can be easily installed in the interference fit to provide convenience to the user.

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

In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only, and various modifications may be made without departing from the technical gist of the present invention.

1 is a view showing a back pressure removing backflow prevention apparatus according to the present invention, Figure 2 is a view showing a partial cross-sectional perspective view taken along the AA 'line of Figure 1, Figure 3 is a back pressure removing backflow according to the present invention Figure 4 is a side cross-sectional view of the prevention device, Figure 4 is a view showing the exhaust gas discharge state of the back pressure removal backflow prevention device according to the present invention, Figure 5 is another embodiment of the back pressure removal backflow prevention device according to the present invention 6 is a view showing a state in which the internal communication is further provided in the exhaust gas backflow prevention apparatus according to the present invention, Figure 7 is further provided with a fixed tube blade in the exhaust gas backflow prevention apparatus according to the present invention 8 is a view showing another embodiment of the fixed tube wing of the exhaust gas backflow prevention apparatus according to the present invention, Figure 9 shows an embodiment further provided with wing communication in FIG. One drawing And, Figure 10 is a view showing another embodiment of gojeonggwan wings of the exhaust gas return device according to the invention, Figure 11 is a view showing an embodiment of a blade further comprising communicating in FIG.

As shown in the figure, the back pressure removing backflow prevention device 10 is configured to include a fixed pipe 100 and the secondary exhaust pipe 110, made of different diameters with concentric circles.

The fixed pipe 100 is coupled to the outside of the end of the exhaust pipe (1) extending from the boiler and the internal combustion engine, a plurality of fixed pipe flow holes 102 through the outer peripheral surface adjacent to the end of the exhaust pipe (1).

And the outer side of the fixed pipe 100, the secondary exhaust pipe 110 is installed to surround the fixed pipe 100 to protect the fixed pipe 100, and the reverse air flow passage opened to one side between the secondary exhaust pipe 110 ( 120).

In other words, the fixed pipe 100 and the secondary exhaust pipe 110 is one end is connected, the reverse air flow passage 120 is formed to open from the other end to the other end, the reverse air flow passage 120 is fixed pipe 100 It is formed between the secondary exhaust pipe 110 and open in the exhaust gas discharge direction from the fixed tube flow opening (102).

This is because the boiler or the internal combustion engine has a structure in which the exhaust backflow occurs at the end of the exhaust pipe 1 so that a part of the exhaust gas flows back into the exhaust pipe 1 so that the backflow gas flowing through the backflow gas flows through the backflow path ( 120).

That is, after the exhaust gas discharged through the exhaust pipe 1 passes through the fixed pipe 100 in communication with the exhaust pipe 1, the reverse air flow gas flowing back by the back pressure flows into the reverse air flow path 120 to fix the fixed pipe 100. To prevent direct inflow.

As described above, when the backflow gas moves along the backflow passage 120, the backflow gas moves to the inside of the fixed tube 100 through the fixed tube flow hole 102 formed in the fixed tube 100, and the moved backflow gas is discharged. By being discharged to the outside of the fixed tube 100 by the new exhaust gas is to be discharged back gas.

At this time, the fixed pipe 100 is formed inclined toward the center from one end coupled to the other end of the exhaust pipe 1 toward the other end to increase the discharge rate of the exhaust gas and at the same time, the secondary exhaust pipe 110 The cross-sectional area of both ends of the backflow passage 120 is differently formed by changing the separation distance from the backplane.

As such, if the cross-sectional area of the reverse air flow passage 120 is gradually increased from one end communicated with the fixed pipe flow opening 102 to the other end, the speed of the reverse air flow flowing into the other end is increased to increase the inflow of the reverse air flow gas. It is intended to guide and easily pass the fixed tube flow opening (102).

And, as shown in Figure 5, the non-fixed end (the other end) of the fixed tube 100 and the secondary exhaust pipe 110 is formed to be bent in the center direction, bending of the fixed tube 100 and the secondary exhaust pipe 110 The discharge is made easier by further increasing the discharge rate of the exhaust gas at the end.

In other words, the ends of the fixed pipe 100 and the secondary exhaust pipe 110 through which the exhaust gas is discharged are not adjacent to the end of the exhaust pipe 1 and bent to the other end than the ends of the fixed pipe 100 fixed to the exhaust pipe 1. By increasing the discharge rate toward the exhaust gas, it is easy to exhaust the exhaust gas.

And when the other end of the fixed tube 100 is bent in the center direction it is more easily prevented backflow gas back flow through the other end of the fixed tube (100).

At this time, the other end inner cross-sectional area of the secondary exhaust pipe 110 is formed larger than the other end inner cross-sectional area of the fixed pipe 100 to form the inlet air flow passage 120, the reverse air flow passage 120 is bent secondary exhaust pipe By 110, the inflow amount of the back stream gas can be reduced.

And the other end of the fixed tube 100, the internal communication 130 is installed, the internal communication 130 is made of a honeycomb (honeycomb) structure to prevent the diffusion of the exhaust gas generated at the edge of the fixed tube 100 more quickly and It can be discharged smoothly.

As shown in Figure 7 to 9, the fixed tube wing 140 is installed on the inside of the fixed tube 100 can more easily discharge the exhaust gas discharged through the exhaust pipe 1, the smooth discharge of the exhaust gas By it can effectively discharge the back-flow gas introduced through the fixed pipe flow port (102).

Fixed tube wing 140 is composed of a wing body and a plurality of wings, the wings are respectively installed in the interior of the fixed tube 100 between the plurality of fixed tube flow openings 102, the wing body is made of a conical shape of the plurality of wings mutually It is installed in the center of contact.

At this time, the wing body is made of a conical shape in the present invention, if the structure that can make the flow of the exhaust gas quickly and smoothly inside the fixed tube 100 may be installed in a different shape.

On the other hand, as shown in Figure 8, in another embodiment of the fixed tube wing 140 ', the wing is bent to be inclined at a constant reference line in the discharge direction can be quickly discharged exhaust gas discharge, accordingly fixed tube flow port ( It is possible to easily discharge the backflow gas passed through the 102.

And the non-fixed end (the other end) of the fixed tube 100 is provided with a wing communication 150 of the honeycomb structure (honeycomb) to more easily discharge the exhaust gas, the fixed tube flow opening ( It is possible to effectively discharge the backflow gas introduced through 102).

On the other hand, as shown in Figure 10 to 11, the fixed tube wing 140 "is installed inside the fixed tube 100 is fitted between the exhaust pipe 1 and the fixed tube 100.

The fixed tube wing 140 ″ is formed to be inclined toward the center so that the cross-sectional area decreases toward the discharge direction (the other end) of the exhaust gas to form a second reverse air flow passage 160 ″ between the fixed tube 100 and the fixed tube 100.

When the other end of the fixed tube wing 140 "is inclined toward the center direction, the discharge speed of the exhaust gas which has passed through the exhaust pipe 1 is increased and can be easily discharged.

In addition, the second backflow passage 160 ″ prevents the backflow gas introduced into the backflow passage 120 from flowing back into the exhaust pipe 1 while passing through the fixed pipe flow port 102. Can be discharged more easily.

In addition, the other end of the fixed tube wing (140 ") is provided with a wing communication (150") of the honeycomb structure (honeycomb) to more easily discharge the exhaust gas, the fixed tube flow opening 102 by the smooth discharge of the exhaust gas It is preferable to effectively discharge the backflow gas introduced through.

1 is a view showing an exhaust gas backflow prevention device according to the present invention,

FIG. 2 is a partial cross-sectional perspective view taken along the line AA ′ of FIG. 1;

3 is a side cross-sectional view of the exhaust gas backflow prevention device according to the present invention;

4 is a view showing a back pressure exhaust gas discharge state of the exhaust gas backflow prevention device according to the present invention,

5 is a view showing another embodiment of the exhaust gas backflow prevention apparatus according to the present invention,

6 is a view showing a state in which the internal communication is further provided in the exhaust gas backflow prevention apparatus according to the present invention,

7 is a view showing an embodiment further provided with a fixed tube wing in the exhaust gas backflow prevention apparatus according to the present invention,

8 is a view showing another embodiment of the fixed tube wing of the exhaust gas backflow prevention apparatus according to the present invention,

FIG. 9 is a view showing an embodiment in which wing communication is further provided in FIG. 7;

10 is a view showing another embodiment of the fixed tube wings of the exhaust gas backflow prevention apparatus according to the present invention,

FIG. 11 is a view illustrating an embodiment in which wing communication is further provided in FIG. 10.

<Description of Symbols for Main Parts of Drawings>

1: exhaust pipe 10: back pressure removal backflow prevention device

100: fixed tube 102: fixed tube flow port

110: secondary exhaust pipe 120: reverse air flow passage

130: internal communication 140, 140 ', 140 ": fixed tube wing

150, 150 ": wing communication 160": second reverse air flow path

Claims (9)

The unfitted part protrudes outward from the end of the exhaust pipe and has a structure that can be fitted to the end of the exhaust pipe extending from the internal combustion engine or the end of the boiler communication. The inside of the exhaust pipe communicates with the exhaust pipe. A fixed tube formed with a plurality of fixed tube flow holes; And It is made to include a secondary exhaust pipe installed to surround the fixed tube, Between the stationary pipe and the secondary exhaust pipe to form a backflow passage so that the backflow gas flows back out of the exhaust gas discharged through the fixed pipe, induces a backflow gas into the fixed pipe through the fixed pipe flow port, the induced reverse Backflow removal backflow prevention device, characterized in that to discharge the airflow gas back to the outside. The method of claim 1, Each end of the fixed pipe and the exhaust pipe and the non-fixed end of the secondary exhaust pipe is formed to be bent in the center direction, the internal cross-sectional area of the bent portion of the secondary exhaust pipe is formed to be larger than the internal cross-sectional area of the bent pipe of the fixed pipe Backflow prevention device. The method according to claim 1 or 2, The back pressure removing backflow prevention device, characterized in that the internal communication having a honeycomb (honeycomb) structure is further provided at the end of the fixed pipe and the non-fixed end. The method according to claim 1 or 2, The inside of the fixed tube is installed on the inside of the fixed tube flow port to minimize the impact of the back gas with the exhaust gas, increasing the discharge speed of the exhaust gas is characterized in that the fixed tube wing is further provided to discharge the exhaust gas quickly and smoothly Back pressure removal backflow prevention device. The method of claim 4, wherein the fixed tube wings, Each wing inside the fixed tube between a plurality of fixed tube flow openings; And Back pressure removing backflow prevention device comprising a conical wing body located in the center of the plurality of wings in contact with each other. The method of claim 5, The wing is back pressure removing backflow prevention device, characterized in that the bent to be formed to be inclined constant with respect to the discharge direction. The method of claim 4, wherein Back end of the fixing pipe and the non-fixed end of the back pressure elimination backflow prevention device characterized in that the wing communication having a honeycomb (honeycomb) structure is further provided. The method of claim 4, wherein One end is inserted between the fixed tube and the exhaust pipe, the cross-sectional area is formed to be inclined toward the center so that the cross-sectional area decreases toward the discharge direction of the exhaust gas to increase the speed of the exhaust gas, and is in communication with the fixed tube flow port between the inner peripheral surface of the fixed tube Back pressure elimination backflow prevention device characterized in that it further comprises a fixed pipe wing to form a back flow passage. The method of claim 8, Back pressure elimination backflow prevention device further comprises a wing communication having a honeycomb (honeycomb) structure inside the end of the exhaust pipe discharge direction of the fixed tube blade.

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