KR100950288B1 - Trap device for preventing flame of internal combustion engine - Google Patents

Abstract

The present invention relates to a trap device for preventing flame ejection of an internal combustion engine, and has a structure in which a plurality of straps having radially irregularities formed on a plate surface are overlapped to absorb a flame while passing through a lead hole formed between the straps and incombustible by oxygen deficiency. A primary flame extracting duct unit for discharging in a flame state; Secondary flame which is installed outside the primary flame duct duct portion, and passes through the hole formed between the straps in a structure in which a plurality of straps such as the primary flame duct duct overlaps, and finally absorbs the remaining flame The induction duct portion; including, the primary flame extraction duct portion of the discharge hole and the secondary flame extraction duct portion of the discharge hole is installed to be offset from each other, the technical gist, due to overheating due to overheating of the engine portion It can prevent the discharge to the outside by obstructing the flow of the flame generated by the flow direction, and the structure is simple, the overall size of the trap device can be reduced, and the production process is simplified to reduce the manpower and materials It has the effect of cost reduction.

Internal Combustion Engine, Flame Eruption Prevention, Trap Device, Strap, Drain Hole, Decompression Diffusion Space

Description

TRAP DEVICE FOR PREVENTING FLAME OF INTERNAL COMBUSTION ENGINE}

The present invention relates to a trap device for preventing flame ejection of an internal combustion engine, and more particularly, an internal component according to an impact of a blast pressure while maintaining the capability of absorbing and decompressing flames emitted to the outside in case of a misfire of an overheated heat engine. The present invention relates to a flameout prevention trap device of an internal combustion engine that can minimize deformation.

In general, a device for converting thermal energy generated by combustion of fuel into mechanical energy is called a heat engine. Heat engines are classified into an internal combustion engine and an external combustion engine. Here, the internal combustion engine is a high-temperature, high-pressure gas generated by burning fuel in the engine, such as a gasoline engine, a diesel engine, and a gas turbine, is directly converted into work energy. An external combustion engine converts steam energy into mechanical energy in a steam prime mover by generating hot, high pressure steam by heating hot water from a boiler such as a steam engine and a steam turbine.

In particular, ships use internal combustion engines that directly convert high-temperature and high-pressure gas generated by burning fuel in engines to work energy. The general internal combustion engine structure is powered by an engine unit having a plurality of cylinder devices. It consists of a system that converts this power into mechanical kinetic energy by generating.

A crank portion, which is a transmission device, is connected to the engine portion, and the crank portion is surrounded by the crankcase, and the inside of the crankcase maintains a relatively high temperature and pressure by the high temperature and high pressure gas of the engine, but inside the crankcase When the pressure rises above the prescribed pressure (usually 0.03 ~ 0.06kg / ㎠), the internal gas is discharged to the outside by excessive pressure so that the inside of the crankcase can be always maintained at normal pressure.

When a flame is generated by an error in the crankcase, the flame is widely spilled to the outside, which causes not only various mechanisms around the crankcase, but also fatal damage to the human body.

In order to prevent this, there is a need for a flameout prevention trap device that can block the outflow of flames to the outside during the explosion of the engine unit of the internal combustion engine.

Accordingly, the "apparatus for preventing flame ejection of an internal combustion engine" by the present applicant has been proposed in Korean Patent Registration No. 10-0767283, and continuous development for performance improvement is being made.

1 is a longitudinal cross-sectional view of a conventional flame ejection trap device.

As shown in Figure 1, the opening portion of the crankcase is equipped with a flame ejection prevention trap device, it is possible to block the flame when the flame is generated by the error in the crankcase.

Specifically, the conventional flame ejection trap device has a structure in which a plurality of straps 11 having radially irregularities formed on the plate surface are overlapped, and are installed at the outer circumference of the opening of the crankcase, and the flame flowing out of the crankcase is primarily A primary flame leading-out duct unit 10 which absorbs and passes through the lead-out hole 12 formed between the straps 11 and discharges in a non-flame state due to non-combustion due to oxygen deficiency; A flame heat absorbing net part 20 for secondarily absorbing and dispersing a flame flowing out of the primary flame extracting duct part 10 by a plurality of metal wires intersecting and overlapping with each other; A deformation preventing space part 30 installed outside the flame heat absorbing net part 20 to provide an empty space part in which the flame heat absorbing net part 20 may be distorted within a predetermined width; And a structure in which a plurality of straps such as the primary flame-out duct part 10 overlap each other and are installed outside the deformation preventing space part 30 so that the remaining flame passing through the deformation preventing space part 30 is tertiary. The secondary flame guide duct unit 40 is finally absorbed while passing through the lead-out hole 42 formed between the strap 41 and discharged in a non-flame state by the non-combustion due to oxygen deficiency; Have

That is, the flame flowing out to the outside is first absorbed by the primary flame extracting duct unit 10, secondarily absorbed by the flame heat absorbing net unit 20, decompressed in the deformation preventing space portion 30 and decompressed The flame is finally configured to be absorbed and dispersed by the secondary flame extracting duct unit 40.

Conventional flame ejection trap device having such a structure has the advantage that can effectively prevent the deformation of the metal mesh or a number of straps by the impact of the blast pressure while maintaining the ability to absorb and decompress the flame, but flame heat absorption net portion The manufacturing process of 30 becomes complicated, and there is a problem in that the deformation preventing space portion 30 is required during assembly, thereby increasing the material cost and putting a lot of manpower.

In addition, the secondary flame extracting duct part 40 installed outside the flame heat absorbing net part 20 and the deformation preventing space part 30 increases the diameter of the trap device, making it difficult to miniaturize it.

The present invention devised to solve the problems described above is an object of the present invention to provide a trap device for preventing flame ejection of an internal combustion engine having a simple structure as a whole, leaving the structure of the trap device to a minimum.

It is another object of the present invention to provide a flameout preventing trap device of an internal combustion engine that can significantly reduce the amount and impact of flame by significantly slowing the speed of discharge by interfering with the direction of flame.

The flameout prevention trap apparatus of the internal combustion engine according to the first embodiment of the present invention for achieving the object as described above, is formed between the straps in a structure in which a plurality of straps formed radially irregularities on the plate surface is overlapped A primary flame extracting duct portion for absorbing the flame while passing the ball and discharging the flame in a non-flame state due to non-combustion due to oxygen deficiency; Secondary flame which is installed outside the primary flame duct duct portion, and passes through the hole formed between the straps in a structure in which a plurality of straps such as the primary flame duct duct overlaps, and finally absorbs the remaining flame The induction duct unit; including, the primary flame extraction duct portion of the derivation hole and the secondary flame extraction duct portion of the derivation hole is installed to be offset from each other characterized in that the flame proceeds.

On the other hand, the flame spray prevention trap device of the internal combustion engine according to the second embodiment of the present invention, by providing an empty space portion extended to the outside of the primary flame discharge duct portion to pass through the primary flame discharge duct portion and weakened Characterized in that the configuration further comprises a; decompression diffusion space for reducing the pressure of the flame.

In addition, the secondary flame extracting duct portion is formed to have the same thickness or thicker than the primary flame extracting duct portion, and the width thereof is preferably formed to be the same or longer.

According to the present invention by the configuration as described above is composed of the primary flame extracting duct portion and the secondary flame slaughtering duct portion, the structure is simple, the overall size of the trap device can be reduced, the production process is simplified, reducing manpower and Cost savings due to material reduction

In addition, according to the present invention, the openings of the 1st and 2nd flame extraction ducts through which the flame discharged to the outside of the internal combustion engine of the overheated internal combustion engine are displaced so that the speed of discharge is remarkably reduced to significantly reduce the amount and impact of the flame. In addition, by absorbing and attenuating the second and third multiplexing by the primary flame extracting duct part, the secondary flame extracting duct part, and the reduced pressure diffusion space part, the effect of releasing the flame to the outside can be obtained as much as possible. .

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, and like reference numerals refer to like elements throughout. The terminology used in the description is not to be construed as simply limiting or limiting, because it is used in conjunction with the description of certain specific embodiments of the invention. In addition, embodiments of the present invention may include a variety of new features, and are not intended to be exclusively applied to the required characteristics, it is a basic content in practicing the present invention.

2 is a longitudinal cross-sectional view of a flame ejection prevention trap apparatus of an internal combustion engine according to a first preferred embodiment of the present invention, and FIG. 3 is a view showing a propagation direction of the flame passing through the lead-out hole according to the first exemplary embodiment. .

As shown in Figures 2 and 3, the flame ejection prevention trap device of the internal combustion engine according to the first embodiment of the present invention, the primary flame extraction duct 10 and the second from the inner side adjacent to the opening of the crankcase The flame induction duct 2 is provided in sequence so that the flame emitted to the outside can be absorbed in a double manner.

First, the primary flame induction duct 10 according to the present invention will be described.

The primary flame extracting duct unit 10 has a structure in which a plurality of straps 10a having radial irregularities on a plate surface are overlapped to form a plurality of outlet holes 10b providing a flame movement path to the inside and the outside. It is a component installed most adjacent to the outer circumference of the opening of the crankcase to be ejected. The leading hole 10b of the primary flame extracting duct part 10 has the unevenness of the strap 10a to form the upper and lower side walls to provide a large surface area and to expand the contact area with cold air therein. The flame passing through the opening of the case is effectively cooled. And, a flame having a high flow rate passes through every long path formed by each of the outlet holes 10b, and a phenomenon in which oxygen is depleted instantly occurs, and the flame can be significantly reduced by oxygen deficiency.

In addition, the primary flame induction duct 10 has a structure in which a plurality of straps 10a and lead holes 10b overlap each other, and the width thereof is generally about 20 mm to 25 mm, so that the flames are formed on the strap 10 a and the lead holes. The resistance to air flow through (10b) is large, so that deformation due to the impact of the explosion is less likely to occur.

Next, the secondary flame induction duct 20 according to the present invention will be described.

The secondary flame extracting duct part 20 is a component that absorbs and attenuates a flame secondaryly, such that the plurality of straps 20a having radially irregularities on a plate surface, such as the primary flame extracting duct part 10, are provided. The structure is overlapped to form a plurality of outlet holes 20b that provide flame movement paths to the inside and the outside, and are installed outside the primary flame extracting duct part 10.

The outlet hole 20b of the secondary flame extracting duct part 20 is formed by the unevenness of the strap 20a to form upper and lower side walls, thereby providing a large surface area and expanding the contact area with cold air therein. The flame passing through the secondary flame extracting duct part 20 is effectively cooled, and a phenomenon that oxygen is depleted instantly occurs while a flame having a high flow velocity passes through each long path formed by each of the outlet holes 20b. As a result of the lack of oxygen, the flame is no longer in the form of a flame, but changes to a smoke state and discharges to the outside.

Here, the thickness of the secondary flame extracting duct portion 20 is formed to be the same or thicker than the thickness of the primary flame extracting duct portion 10, the width is also formed to be the same or longer. That is, even in the same height space, the cylindrical secondary flame extracting duct portion 20 installed on the outer side of the primary flame extracting duct portion 10 increases in area, and when the area increases, the space also increases. Therefore, in order to offset the gap space increased compared to the contact area of the flame in the secondary flame extracting duct unit 20 to form the same or thicker, the width is formed to be the same or longer to finally catch the flame will be. For example, if the thickness of the primary flame extracting duct part 10 is 0.5t, the thickness of the secondary flame extracting duct part 20 is preferably about 0.5t to 1.0t, and the primary flame extracting duct part If the width of 10 is 30 mm, it is preferable that the width of the secondary flame extracting duct portion 20 is about 35 mm to 40 mm. These thickness values can be adjusted to any number of internal combustion engines and may be used equally within certain ranges.

According to the first embodiment of the present invention, the flame first flows into the lead-out hole 10b, which is the flame moving space of the primary flame-out duct part 10, and the lead-out hole 10b. Cool the flame passing through it. Then, the flame passing through the derivation hole 10b of the primary flame derivation duct part 10 flows to the derivation hole 20b which is a flame moving space of the secondary flame derivation duct part 20. At this time, as shown in Figure 3, the lead-out hole (20b) of the secondary flame induction duct portion 20 is installed to deviate from each other with the lead-out hole (10b) of the primary flame induction duct 10, the flame is As it proceeds, the speed of the flame having a high flow rate is reduced while passing through the cross path, and accordingly, the flame passing by effectively increasing the contact time with the strap 20a of the secondary flame extracting duct part 20 is effective. It is cooled and completely destroyed.

4 is a longitudinal sectional view of a flame ejection prevention trap apparatus of an internal combustion engine according to a second preferred embodiment of the present invention, and FIG. 5 is a view showing a propagation direction of the flame passing through the lead-out hole according to the second embodiment. .

As shown in Figure 4 and 5, the trap apparatus for preventing flame discharge of the inner smoke pipe according to the second preferred embodiment of the present invention, the primary flame extraction duct portion 10 from the inner side adjacent to the opening of the crankcase Secondary flame extraction duct 20 is spaced apart from each other by further forming the reduced pressure diffusion space portion 30 therebetween, it has a configuration to be able to absorb multiple times and reduce the flame discharged to the outside.

Here, the reduced pressure diffusion space 30 is a component that provides an empty space portion that is extended to the outside of the primary flame induction duct 10, the flame passing through the primary flame induction duct 10 As the pressure is suddenly introduced into the expanded space, the pressure is rapidly reduced, and the pressure is evenly absorbed in the decompression diffusion space part 30 so as to be introduced into the secondary flame extracting duct part 20.

According to the second embodiment of the present invention, the flame first flows into the lead-out hole 10b, which is the flame moving space of the primary flame-out duct part 10, and the lead-out hole 10b. Cool the flame passing through it.

In addition, the flame passing through the primary flame derivation duct part 10 uniformly forms the pressure due to the explosion in the decompression diffusion space part 30 in the entire space part, thereby rapidly reducing the pressure.

Finally, as shown in FIG. 5, the second flame extracting duct part 20 passes through. At this time, the flame having a high flow velocity passes through the path alternated with the flames having the high velocity by the derivation hole 20b of the secondary flame derivation duct part 20 installed to be offset from the derivation hole 10b of the primary flame derivation duct part 10. The deceleration is slowed down, thereby increasing the contact time with the strap 20a of the secondary flame extracting duct portion 20 so that the flame passing through is effectively cooled to completely block the heat of the weakened flame, and thus the crankcase Even if an explosion occurs inside, the flame can be effectively prevented from being released to the outside.

While the present invention has been described with reference to specific embodiments, it will be understood that various modifications and equivalent embodiments are possible without departing from the spirit of the invention as defined by the claims. The technical protection scope should be defined only in the appended claims, and the detailed description and the accompanying drawings should not be construed as limiting the technical spirit of the present invention but as merely illustrative.

1 is a longitudinal sectional view showing a flameout prevention trap device of a conventional internal combustion engine.

Figure 2 is a longitudinal sectional view of the flame ejection prevention trap device of the internal combustion engine according to the first embodiment of the present invention.

Figure 3 is a view showing the progress of the flame passing through the lead-out hole according to the first embodiment.

Figure 4 is a longitudinal cross-sectional view of the flame ejection prevention trap device of the internal combustion engine according to a second embodiment of the present invention.

5 is a view showing a progress direction of the flame passing through the lead-out hole according to the second embodiment.

* Explanation of symbols on main parts of the drawings *

10: primary flame induction duct 10a: strap

10b: lead hole 20: secondary flame relief duct part

20a: strap 20b: lead hole

30: decompression diffusion space

Claims (3)

It is installed on the outer circumference of the opening of the crankcase from which the flame is ejected, and the flame is formed while passing through the outlet hole 10b formed between the straps 10a in a structure in which a plurality of straps 10a having radially irregularities are formed on the plate surface. A primary flame extracting duct unit 10 for absorbing and discharging in an unflame state by non-combustion due to oxygen deficiency; An outlet hole 20b provided between the strap 20a in a structure in which a plurality of straps 20a, such as the primary flame extracting duct part 10, are disposed outside the primary flame extracting duct part 10 and overlapped. It is configured to include; secondary flame extraction duct unit 20 for finally absorbing the remaining flame while passing through) Flame of the internal combustion engine, characterized in that the discharge hole (10b) of the primary flame extracting duct unit 10 and the discharge hole (20b) of the secondary flame extracting duct unit 20 are installed to be offset from each other Blowout trap device. The method of claim 1, A reduced pressure diffusion space portion 30 which provides an extended empty space portion outside the primary flame extracting duct portion 10 and passes through the primary flame extracting duct portion 10 to reduce the pressure of the dispersed and weakened flame; Flame outbreak trap device for an internal combustion engine, characterized in that further comprises. The method according to claim 1 or 2, The secondary flame extracting duct portion 20 is formed to have the same thickness or thicker than the primary flame extracting duct portion 10, the width is equal to or longer than the flame discharge prevention of the internal combustion engine Trap device.

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