KR100866647B1 - A trap for preventing burst of flame out crank case in internal combustion engine and manufacturing method thereof - Google Patents

Abstract

A trap for preventing burst of flame out crank case and a manufacturing method thereof are provided to minimize the jet of the flame to the outside by delaying the jet of the flame generated in the crankcase inside. The flame eruption prevention trap is installed at the opening of the crankcase for the internal combustion engine. The flame eruption prevention trap is made of the hook shape between the inner circumference shift(10) and the external periphery shift(20). A plurality of recesses(40) are formed on the flame guide way. The recess is extended to the inner circumference shift and the external periphery shift of the flame guide way in order to delay the jet of the flame to the outside.

Description

A trap for preventing burst of flame out crank case in internal combustion engine and manufacturing method

The present invention relates to a flame ejection trap for a crankcase for an internal combustion engine, and a method for manufacturing the same. More specifically, both ends are positioned at inner and outer circumferential ends of an annular trap, and a radial ejection path of the flame is ejected. The present invention relates to a trap for preventing flame ejection of a crankcase for an internal combustion engine and a method of manufacturing the same, by forming a groove having a displaced shape to delay the ejection of flame generated inside the crankcase to minimize the external ejection of the flame.

Cranks installed in engines of ships, automobiles, etc. are surrounded by a crankcase, and the inside of the crankcase is in a high temperature and high pressure state by a gas generated by combustion of fuel.

Accordingly, the crankcase is provided with a crank case explosion relief valve in one side opening, and if the internal pressure of the crankcase rises above the prescribed pressure (typically 0.03 to 0.05kg / ㎠), the internal gas is excessively pressured. By leaking to the outside to prevent damage to the crankcase due to high pressure.

On the other hand, when an explosion occurs due to a misfire such as overheating and ignition of oil gas inside the crankcase, the flame is ejected to the outside of the crankcase. Such a flame may damage parts or equipment around the crankcase or cause a human accident. Will cause.

In order to prevent this, a flame spray prevention trap device is often installed in a pressure regulating valve installed at the opening of the crankcase. Such a flame spray prevention trap device is formed by stacking a plurality of traps having a ring shape to form a hollow cylindrical body. It is shaped.

Here, the trap constituting the flame ejection prevention trap device is generally made of a ring shape formed with a flame guide surface of a predetermined width between the inner circumferential end and the outer circumferential end, and the groove is formed in the flame guide plane to form the inside of the crankcase for the internal combustion engine The flame generated in the main body is guided to the grooves and dispersed to prevent the external ejection of the flame. In relation to the trap forming the flame ejection trap device, Korean Registered Utility Model Publication No. 20-0155647 "Flame Spray Prevention Automatic pressure regulating valve device for crankcase for internal combustion engines with traps, registered Patent No. 10-0325021 "Trap manufacturing method and apparatus for preventing flame ejection of internal combustion engines", Registration No. 10-0661925 Engine flameout trap devices and the like.

The automatic pressure control valve device for the internal combustion engine installed with the flame ejection prevention trap is fitted with a pipe for maintaining a gap in the stud bolt by fixing a sheet fixed with an o-ring to a part of an opening of the crankcase. Is fixed with a nut, and the O-ring is made of spring by contacting a movable disk, and the spring uses a conical spring whose diameter is narrower to one side, and the narrow end is in contact with the cover, and the wide end is movable. Contact the disc to make it elastic, and fix the trap formed by coiling the iron plate with the cross section of '>' type which protrudes the corrugated protrusion at regular intervals between the outer sheet of the several stud bolts and the cover. In addition to a flame or flame that leaks into the opening due to a fire or explosion inside the crankcase It is to prevent the spread of wealth wide.

The trap used in the internal pressure control valve device of the internal combustion engine is composed of a '>' type cross section and forms a 'V' shaped wrinkle protrusion inducing flame dispersion. As it is formed in the 'V' shape and the flame is located on the path of ejection, there is a limit in preventing the external emission of the flame by inducing the dispersion of the flame.

In the method for manufacturing a flame prevention trap for an internal combustion engine and the apparatus thereof, the method for manufacturing a flame prevention trap for an internal combustion engine includes: a first step of forming an uneven portion in a transverse direction of its length on an outer surface of a single belt-shaped strap; ; A second step of folding the strap around a longitudinal geometric centerline of the strap in which the uneven portion is formed; And forming a plurality of flame inlet nozzles in the center line portion of the folded straps so as to communicate with the flame discharge ducts formed between the uneven portions, and winding them in a plurality of layers to form a cylinder shape to complete a flame spray trap. Step 3; characterized in that it comprises a.

And, the flame ejection trap device of the internal combustion engine is installed on the outer periphery of the opening of the crankcase, flame heat absorption for absorbing and dispersing the flame flowing out of the crankcase by a network structure where a plurality of metal wires intersect and overlapping Reticulum; The structure of the flame heat absorbing net is adjacent to the flame heat absorbing net and is installed adjacent to the flame heat absorbing net, and is made of a material that is more durable than the flame heat absorbing net to prevent the bending deformation to the outside of the flame heat absorbing net from the outside. High strength deformation prevention unit; A deformation preventing space part provided outside the high strength deformation preventing part to provide an empty space part in which the deformation deformation within a predetermined width of the high strength deformation preventing part is possible; A plurality of straps having radially irregularities formed on a plate surface are installed outside the deformation preventing space part, and finally absorb the remaining flame passing through the deformation preventing space part while passing through the lead hole formed between the straps. And a flame derivation duct part for discharging in a non-flame state due to non-combustion due to oxygen deficiency.

However, the trap to be used in the method for producing a flame prevention trap of the internal combustion engine and the apparatus and the trap used in the flameout prevention trap apparatus of the internal combustion engine have a groove in which the flame induces dispersion is simply radially formed in a straight line. As it is located on the path of eruption, there is still a limit to induce flame dispersal to prevent external emission of flame.

Accordingly, the present invention improves the problems of the prior art, and both ends are positioned at the inner and outer circumferential ends of the ring-shaped trap, and form grooves in a shape that deviate from the radial ejection path of the flame, and the inside of the crankcase. It is an object of the present invention to provide a flame prevention trap of a crankcase for an internal combustion engine of a new type in which external discharge of the flame can be minimized by delaying the emission of the flame generated in the present invention.

It is also an object of the present invention to provide a method for producing a flameout prevention trap of a crankcase for an internal combustion engine that minimizes waste of material for forming a trap.

According to a feature of the present invention for achieving the above object, the present invention is installed in the opening of the crankcase for the internal combustion engine, the flame generated in the crankcase to prevent the flame is not ejected to the outside, in the inner circumference trap Consists of a ring-shaped flame-induced drawing of a predetermined width between the end and the outer circumferential end, and to form a plurality of grooves in the flame-induced drawing, the groove is both ends of the inner circumferential end and the outer circumferential end of the flame-guided drawing It extends and is formed in a shape that is bent relative to the ejection path of the radially ejected flame, characterized in that the ejection of the flame is delayed to prevent the external ejection of the flame.

In the flameout prevention trap of the crankcase for the internal combustion engine according to the present invention as described above, the bent shape of the groove is characterized in that any one selected from '>' shape, 'S' shape, 'C' shape group.

In the flame spray prevention trap of the crankcase for the internal combustion engine according to the present invention as described above, the flame guide surface is formed to form a secondary groove penetrating the center of the plurality of grooves in a circular shape so that the flame is also distributed to the auxiliary grooves. do.

In the flame ejection prevention trap of the crankcase for the internal combustion engine according to the present invention as described above, the flame-induced drawing is formed by a plurality of coupling holes spaced apart from each other by a plurality of traps stacked to be integrally fixed by the bolts passing through the coupling holes. It is characterized in that to be combined.

According to another feature of the present invention for achieving the above object, the present invention provides a ring-shaped trap manufacturing method of the trap device for preventing flame ejection is installed in the opening of the crankcase for the internal combustion engine, the trap is the same size Drawing an outline of the divided piece having a shape divided into a thin plate of a predetermined size, and disposing an outline of the divided piece on the thin plate so that a plurality of divided pieces can be drawn on the thin plate; Forming a plurality of divided pieces by cutting the thin plates along the outline of the divided pieces drawn on the thin plates, and forming grooves in the divided pieces; It characterized in that it comprises a step of forming a trap by combining a plurality of divided pieces formed in contact with each other.

According to the flame prevention trap of the crankcase for the internal combustion engine according to the present invention, the external ejection of the flame is minimized by delaying the ejection of the flame generated inside the crankcase.

In addition, by the method for producing a flameout prevention trap of the crankcase for the internal combustion engine according to the present invention, the waste of the material for forming the trap is minimized.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 8. On the other hand, in the drawings and detailed description, the illustration and reference to the construction and operation easily understood by those skilled in the art from the flameout prevention trap of the crankcase for the internal combustion engine and its manufacturing method are briefly or omitted. In particular, in the drawings and detailed description of the drawings, detailed descriptions and illustrations of specific technical configurations and operations of elements not directly related to technical features of the present invention are omitted, and only the technical configurations related to the present invention are briefly shown or described. It was.

1 is a view showing a crankcase for an internal combustion engine to which a flameout prevention trap is applied according to the present invention, and FIG. 2 is a pressure control valve of a crankcase for an internal combustion engine installed with a flameout prevention trap according to the present invention. Figure 3 (a) is a plan view of the flame ejection prevention trap is formed with a '>' groove, Figure 3 (b) is a circular auxiliary groove is added across the '>' shaped groove Figure 4 is a plan view of the flame spray trap, Figure 4 is a partial detailed view of Figure 3, Figure 5 (a) is a plan view of the flame spray prevention trap 'S' groove is formed, Figure 5 (b) is' 6 is a plan view of a flame spray prevention trap having a circular auxiliary recess crossing the S 'groove, and FIG. 6 (a) is a plan view of a flame spray prevention trap formed with a' C 'groove. b) is a circular cross across a 'C' shaped groove 7 is a plan view of the flame spray prevention trap with the addition of the recess groove, Figure 7 (a) and (b) is to show that the flame spray prevention trap formed with the '>' groove is laminated to show that the integral bolt is integrally combined 8 is a view for illustrating the manufacturing process of the flame ejection prevention trap is formed with a '>' groove.

The flame ejection prevention trap 100 of the crankcase for the internal combustion engine according to the present invention is a trap device (3) attached to the pressure control valve (2) installed in the opening of the crankcase (1) for the internal combustion engine as shown in Figs. As a constituent element, it is formed in a ring shape formed with a flame guide surface 30 of a predetermined width between the inner circumferential end 10 and the outer circumferential end 20, and a plurality of grooves 40 in the flame guide surface 30. By forming a) flame generated inside the crankcase (1) for the internal combustion engine is guided to the groove 40 to be dispersed to prevent the external blowout of the flame.

Here, the flame ejection prevention trap 100 of the crankcase for the internal combustion engine according to the present invention, both ends extend to the inner circumferential end 10 and the outer circumferential end 20 of the flame induction surface 30 as shown in Figs. And the groove 40 is formed in a '>' shape, an 'S' shape, and a 'C' shape, which are bent relative to the radial ejection path of the flame so as to deviate from the radial ejection path of the flame. .

That is, one end of the groove 40 is connected to the inner circumferential end 10 so that the flame generated from the inside of the crankcase 1 is connected to the inner circumferential end 10 of the trap 100. The flame guided to the end, guided to one end of the groove 40 is distributed along the groove 40 to move to the other end of the groove 40 connected to the other peripheral end 20 of the trap 100 .

Here, the groove 40 is formed of any one of a '>' shape, 'S' shape, 'C' shape, both ends are located at the inner peripheral end 10 and the outer peripheral end 20, As the flame generated due to the miscalculation inside the crankcase 1 is generally radiated radially, the groove 40 formed in the flame ejection trap 100 according to the present invention is displaced from the general ejection path of the flame. Therefore, in the flame spray prevention trap 100 according to the present invention, the flame induced by the groove 40 is moved under the resistance of the groove 40 so that the spray of the flame is effectively delayed and the flame is delayed by the time. When the flame dispersed in the groove 40 is induced by the flame induction surface 30 of a relatively low temperature is increased, the time that the flame is in contact with the air is reduced to effectively extinguish the flame.

3 (a), 3 (b) and 4 illustrate a flame ejection trap 100 having a '>' shaped groove 40, wherein the center portion of the recess 40 is rounded. desirable.

And, Figure 5 (a) and (b) is shown a flame spray trap 100 having a 'S' shaped groove 40 ', Figure 6 (a) and (b) is a semicircular A flame ejection trap 100 with a 'C' shaped groove 40 "is shown.

Here, Figure 3 (b), Figure 5 (b), Figure 6 (b) of the flame ejection prevention trap 100 of the crankcase for the internal combustion engine shown in the flame induction plane 30 '>', ' Auxiliary groove 50 penetrating through the center of the fold of the plurality of grooves 40 of the S ',' C 'shape is formed in a circular shape, such auxiliary groove 50 is guided by the grooves 40 to move the flame By causing the groove 40 to be distributed in both directions, the flame is further delayed.

Flame spray prevention trap 100 of the crankcase for the internal combustion engine according to the present invention as described above, the flame is effectively dispersed by the formation of the groove formed in the '>' shape, the auxiliary groove 50 is formed in a circular shape, the flame of the flame This effective delay is to prevent the flame is ejected to the outside of the crankcase (1).

Meanwhile, the flame ejection prevention trap 100 of the crankcase for the internal combustion engine according to the present invention is formed with a plurality of coupling holes 60 spaced apart from each other in the flame guide surface 30 as shown in (a) and (b) of FIG. 7. In this way, the plurality of traps 100 stacked on each other are integrally coupled by the fixing bolt 70 and the fixing nut 80 passing through the coupling hole 60, and thus, the opening of the crankcase 1 The operation of laying the trap device (3) consisting of a plurality of traps (100) on the pressure control valve (2) installed in it is made easy and easy.

The method for manufacturing a flameout prevention trap of the crankcase for an internal combustion engine according to the present invention is designed to minimize waste of the thin plate 200 for forming the trap 100, the trap 100 is divided into the same size A plurality of divided pieces 90 are formed, and the plurality of divided pieces 90 thus formed are bonded to each other to form a trap 100.

Here, the split piece 90 according to the embodiment of the present invention is formed in a shape in which the trap 100 is divided into four, and both ends of the split piece 90 have coupling ends 92a and 92b having an uneven relationship with each other. Coupling ends 92a and 92b of the divided pieces 90 each formed and connected to each other are coupled by interference fit. Alternatively, the split pieces 90 may join both ends to each other by spot welding.

Such a split piece 90 is formed by cutting a thin plate 200 of a predetermined size, and for this purpose, an outline of the divided piece 90 is drawn on the thin plate 200 of a predetermined size as shown in FIG. . Here, in the method for manufacturing a flame ejection prevention trap of a crankcase for an internal combustion engine according to the present invention, a plurality of split pieces 90 are arranged by arranging the outline of the split pieces 90 so that the plurality of split pieces 90 are closely connected to each other. The thin plate 200 can be drafted. Accordingly, in the manufacturing method of the flame ejection prevention trap of the crankcase for the internal combustion engine according to the present invention, waste of the thin plate 200 is minimized.

Next, the thin plate 200 is cut along the outline of the divided piece 90 drawn on the thin plate 200 as shown in FIG. 8 (b), and then a plurality of divided pieces 90 are formed. The groove 40 is formed in the divided piece 90 as in c). As shown in FIG. 8 (d), the plurality of divided pieces 90 formed above are connected to each other, and then the coupling ends 92a and 92b of the divided pieces 90 facing each other are joined to each other. The trap 100 will be manufactured.

As described above, the trap for preventing the flame of the crankcase for the internal combustion engine according to the embodiment of the present invention and the manufacturing method thereof are shown in accordance with the above description and the drawings, but this is merely described as an example and the technical spirit of the present invention. Those skilled in the art will appreciate that various changes and modifications can be made without departing.

1 is a view for showing a crankcase for an internal combustion engine to which a flameout prevention trap according to the present invention is applied;

Figure 2 is a view for showing a pressure regulating valve of the crankcase for the internal combustion engine is attached to the flame spray prevention trap according to the present invention;

Figure 3 (a) is a plan view of a flame spray prevention trap formed with a '>' groove;

Figure 3 (b) is a plan view of a flame spray prevention trap is added to the circular auxiliary grooves across the '>' shaped grooves;

4 is a partial detail view of FIG. 3 (b);

Figure 5 (a) is a plan view of a flame ejection prevention trap formed with 'S' grooves;

Figure 5 (b) is a plan view of a flame spray prevention trap is added to the circular auxiliary grooves across the 'S' shaped grooves;

Figure 6 (a) is a plan view of a flame ejection prevention trap formed with 'C' grooves;

Figure 6 (b) is a plan view of a flame spray prevention trap is added to the circular auxiliary grooves across the 'C' shaped grooves;

Figure 7 (a) and (b) is a view for showing that the '>'-shaped grooves are formed by stacking the flame spray prevention trap is integrally bonded to the fixing bolt;

8 is a view showing a manufacturing process of a flame spray prevention trap formed with a '>' groove.

* Description of the symbols for the main parts of the drawings *

1: crankcase 2: pressure regulating valve

3: trap device 10: inner peripheral end

20: outer circumferential edge 30: flame guided drawing

40, 40 ', 40 ": groove 50: auxiliary groove

60: coupling hole 70: fixing bolt

80: fixing nut 90: split piece

92a, 92b: coupling stage 100: flameout prevention trap

200: sheet

Claims (5)

In the flame-proof trap to be installed in the opening of the crankcase for the internal combustion engine to prevent the flame generated inside the crankcase is ejected to the outside, The inner circumferential end and the outer circumferential end is formed in a ring shape formed a flame induction of a predetermined width, and a plurality of grooves are formed in the flame induction, The groove has both ends extending to the inner circumferential end and the outer circumferential end of the flame induction drawing, and is formed in a shape that is bent with respect to the ejection path of the radially ejected flame, so that the ejection of the flame is delayed to prevent external ejection of the flame. A flameout trap for a crankcase for an internal combustion engine. The method of claim 1, The recessed shape of the groove is a flame ejection prevention trap of the crankcase for an internal combustion engine, characterized in that any one selected from the group '>' shape, 'S' shape, 'C' shape. The method of claim 2, The flame induction trap is a flame ejection trap of the crankcase for the internal combustion engine, characterized in that to form a circular auxiliary groove penetrating the central portion of the plurality of grooves so that the flame is also distributed to the auxiliary groove. The method of claim 2 or 3, The flame induction drawing is formed by forming a plurality of coupling holes spaced apart from each other so that a plurality of traps stacked on each other are integrally coupled by a fixing bolt passing through the coupling holes, the flame prevention prevention trap of the crankcase for the internal combustion engine . In the manufacturing method of the trap of the annular which comprises the flameout prevention trap apparatus provided in the opening part of the crankcase for internal combustion engines, Drawing an outline of the divided piece having a shape in which the trap is divided into the same size on a thin plate, and disposing an outline of the divided piece on the thin plate so that a plurality of divided pieces can be drawn on the thin plate; Forming a plurality of divided pieces by cutting the thin plates along the outline of the divided pieces drawn on the thin plates, and forming grooves in the divided pieces; A method of manufacturing a flame spout preventing trap of the crankcase for an internal combustion engine, characterized in that it comprises a step of forming a trap by connecting a plurality of divided pieces in contact with each other.

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