EP2294297A1 - Arrest device for explosion relief valve of internal combustion engine - Google Patents

Arrest device for explosion relief valve of internal combustion engine

Info

Publication number
EP2294297A1
EP2294297A1 EP08793689A EP08793689A EP2294297A1 EP 2294297 A1 EP2294297 A1 EP 2294297A1 EP 08793689 A EP08793689 A EP 08793689A EP 08793689 A EP08793689 A EP 08793689A EP 2294297 A1 EP2294297 A1 EP 2294297A1
Authority
EP
European Patent Office
Prior art keywords
arrest
flame
bent parts
plates
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08793689A
Other languages
German (de)
French (fr)
Inventor
Se-chun Oh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyunwoo Smt Co Ltd
Original Assignee
Hyunwoo Smt Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyunwoo Smt Co Ltd filed Critical Hyunwoo Smt Co Ltd
Publication of EP2294297A1 publication Critical patent/EP2294297A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/10—Safety means relating to crankcase explosions

Definitions

  • the present invention relates, in general, to arrest devices for explosion relief valves which absorb and disperse flames generated by explosions in internal combustion engines during flame discharge processes, and thus reduce the intensity of the flames and, more particularly, to an arrest device for an explosion relief valve of an internal combustion engine in which arrest plates are bent to have trapezoidal bent parts and are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one and flame dampening holes are thus densely formed between the bent parts, wherein a flame dispersion guide, which is formed by bending the medial portion of each bent part, is disposed at a medial position in each flame dampening hole, so that flames are not directly discharged through the flame dampening holes, and the flames are dispersed and whirled by the corresponding flame dispersion guides in the flame dampening holes, thus more effectively absorbing and dispersing the flames, thereby reducing the intensity of the flames.
  • Background Art
  • an arrest device for explosion relief is typically installed on the internal combustion engine.
  • Such an arrest device includes an arrest plate having a multilayered structure and is open in the central portion thereof.
  • the arrest device is installed on the engine such that the open central portion of the arrest device is aligned with the opening of the engine. Furthermore, a plurality of flame dampening holes, which extend in radial directions, is formed in the arrest plate. Therefore, the arrest device absorbs and disperses flames generated by an explosion in the engine, thus dampening the flames, thereby protecting the components around the engine, and preventing casualties.
  • the flame dampening holes are formed in the arrest plates, but they are not dense. Hence, an effect of dampening flames by absorbing and dispersing the flames generated by explosion in the internal combustion engine is unsatisfactory. There is a problem in that some flames erupt outside of the engine.
  • the multilayered structure of the arrest plate is formed by curving the arrest plate in a spiral shape. Therefore, because it is difficult to form the multilayered structure, the workability is reduced. As well, when an explosion occurs in the engine, the multilayered structure may become undesirably broken as a result of pressure from the explosion. Disclosure of Invention Technical Problem
  • an object of the present invention is to provide an arrest device for an explosion relief valve of an internal combustion engine in which arrest plates are bent to have trapezoidal bent parts and are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one and flame dampening holes are thus densely formed between the bent parts, wherein a flame dispersion guide, which is formed by bending the medial portion of each bent part, is disposed at a medial position in each flame dampening hole, so that flames are not directly discharged through the flame dampening holes, but are dispersed and whirled by the corresponding flame dispersion guides in the flame dampening holes, thus more effectively absorbing, dispersing and dampening the flames, thereby markedly enhancing the efficiency and stability of the arrest device.
  • Another object of the present invention is to provide an arrest device for an explosion relief valve of an internal combustion engine in which the arrest plates, each of which has a ring shape, are stacked on top of one another by welding the opposite edges thereof, unlike the conventional technique, in which the multilayered structure is formed by curving the arrest plate into a spiral shape, thus firmly maintaining the stacked structure against impacts attributable to an explosion of the internal combustion engine, thereby enhancing the reliability of the product.
  • the present invention provides an arrest device for an explosion relief valve installed on an opening of an internal combustion engine, the arrest device having a multilayered structure to absorb and disperse flames generated by an explosion occurring in the internal combustion engine, thus reducing intensity of the flames, the arrest device including: a plurality of arrest plates stacked on top of one another, each of the arrest plates being shaped by pressing, and including: bent parts arranged along a longitudinal direction of the arrest plate, and each of the bent parts having a trapezoidal depression; and a flame dispersion guide formed on a medial portion of an upper surface of each of the bent parts, the flame dispersion guide having guide holes, each of which is reduced in width from a center thereof to opposite ends thereof, and a hemispheric depression formed in a lower surface of the flame dispersion guide, the hemispheric depression being open downwards, wherein the arrest plates are stacked on top of one another such that the trapezoidal bent parts of the lower one of the adjacent arrest plates are inserted
  • each of the arrest plates which are stacked onto each other, may be shaped into a ring shape through an independent process, and the arrest plates may be integrated with each other by welding the opposite edges thereof to each other.
  • arrest plates are bent to have trapezoidal bent parts and are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one and flame dampening holes are thus densely formed between the bent parts.
  • a flame dispersion guide which is formed by bending the medial portion of each bent part, is disposed at a medial position in each flame dampening hole, so that flames are not directly discharged through the flame dampening holes, but are dispersed and whirled by the corresponding flame dispersion guides in the flame dampening holes, thus more effectively absorbing and dispersing the flames, thereby reducing their intensity.
  • the arrest plates are stacked on top of one another by welding the opposite edges thereof, unlike the conventional technique, in which the multilayered structure is formed by curving the arrest plate into a spiral shape.
  • the stacked structure can firmly withstand impacts attributable to an explosion occurring in the internal combustion engine.
  • the reliability of the product is enhanced.
  • FIG. 1 is a sectional view illustrating the installation of an arrest device for an explosion relief valve of an internal combustion engine, according to an embodiment of the present invention
  • FIG. 2 is a plan view of the arrest device according to the present invention.
  • FIG. 3 is a perspective view showing an arrest plate constituting the arrest device according to the present invention.
  • FIG. 4 is a side sectional view showing arrest plates which are in the separated state, according to the present invention.
  • FIG. 5 is a side sectional view showing the stacked arrest plates according to the present invention.
  • FIG. 6 is a front sectional view showing the stacked arrest plates according to the present invention. Best Mode for Carrying Out the Invention
  • the present invention provides an arrest device, which is constructed such that arrest plates having a multilayered structure are installed on an opening of an internal combustion engine to effectively absorb and disperse flames generated by an explosion occurring in the internal combustion engine, thus reducing the intensity of the generated flames.
  • the arrest device for an explosion relief valve of internal combustion engines includes a plurality of arrest plates 10, which are stacked onto each other, and each of which is shaped by pressing.
  • Each arrest plate 10 has bent parts 11, which are arranged along the longitudinal direction of the arrest plate 10, and each arrest plate has a trapezoidal depression 12.
  • a flame dispersion guide 15 is formed on the medial portion of the upper surface of each bent part 11.
  • the flame dispersion guide 15 has guide holes 16, each of which is reduced in width from the center thereof to the opposite ends thereof, and a hemispheric depression 17, which is formed in the lower surface of the flame dispersion guide 15 and is open downwards.
  • each flame dispersion guide 15 is disposed at the medial position in the corresponding flame dampening hole 13, thus dispersing a flame upwards, downwards and in the longitudinal direction of the flame dampening hole 13.
  • each of the arrest plates 10 are stacked onto each other and shaped into a ring shape through an independent process.
  • the arrest plates 10 are integrated with each other by welding the opposite edges thereof together.
  • reference numeral 5 denotes a cover
  • the arrest plates having the multilayered structure are installed on the opening of the internal combustion engine.
  • each arrest plate 10 is formed into a ring shape by welding the opposite ends thereof to each other.
  • the ring-shaped arrest plates 10 are stacked on top of one another.
  • the flame dampening holes 13 are defined in the respective trapezoidal depressions 12 between the bent parts 11 of the adjacent arrest plates 10.
  • the flame dampening holes 13 are arranged in the arrest device in the vertical direction and in the circumferential direction and are spaced apart from each other at regular intervals.
  • the flame dampening holes 13, which are spaced apart from each other at regular intervals and are arranged in the arrest plates 10 in the vertical direction and the circumferential direction, primarily absorb and disperse flames generated by an explosion of the internal combustion engine, thus primarily reducing the intensity of the flames.
  • the intensity of the flames can be further effectively weakened.
  • a flame generated by the internal combustion engine is drawn into and dispersed by the flame dampening holes 13. Some of each flame is drawn into the corresponding flame dampening hole 13 and is guided upwards along the upper surface of the corresponding flame dispersion guide 15. Remaining portions of the flame are guided into the corresponding hemispheric depression 17 through the front guide hole 16 of the flame dispersion guide 15. Some of the flame is guided downwards into the hemispheric depression 17. Remaining portions of the flame are guided into the corresponding flame dampening hole 13 through the rear guide hole 16 of the flame dispersion guide 15. Thereafter, the flames are discharged from the flame dampening holes 13 to the outside of the arrest device.
  • the arrest plates 10 are stacked on top of one another and are integrated with each other by welding junctions of the opposite edges of the arrest plates 10 to each other. Furthermore, when the arrest plates 10 are stacked on top of one another, the bent parts 11 of the lower of the adjacent arrest plates 10 are inserted into the corresponding trapezoidal depressions 12 of the bent parts 11 of the upper one. Therefore, the arrest plates 10 are securely supported by each other. Thus, ability to withstand high pressure attributable to an explosion in the internal combustion engine can be further enhanced. As a result, the present invention can solve a problem of the conventional spiral stacked structure, whereby the stacked structure is broken by high pressure attributable to the explosion.
  • the arrest plates each of which is bent in a zigzag manner to form the trapezoidal bent parts, are stacked onto each other such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one so that the flame dampening holes are closely formed.
  • the flame dampening holes which are formed at upper and lower positions adjacent to each other, form zigzag flame discharge passages using the guide holes of the flame dispersion guides. Therefore, flames, which are generated by an explosion of the internal combustion engine pass through the flame discharge passages in a zigzag manner. Thereby, flames can be effectively absorbed and dispersed by the arrest device of the present invention.
  • the arrest plates are stacked on top of one another and are welded at opposite edges thereof to each other. Accordingly, the arrest device of the present invention can reliably maintain the stacked structure against impacts attributable to an explosion of the internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)

Abstract

An arrest device for an explosion relief valve of an internal combustion engine is disclosed. The arrest device includes arrest plates (10), which are stacked on top of one another. Each arrest plate includes bent parts (11) which each have a trapezoidal depression (12). The arrest plate further includes a flame dispersion guide (15), which is formed on the upper surface of each bent part. The arrest plates are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the trapezoidal depressions of the bent parts of the upper one so that a flame dampening hole (13) is defined between the bent parts. Each flame dispersion guide is disposed at the medial position in the corresponding flame dampening hole, thus dispersing a flame upwards, downwards and in the longitudinal direction of the flame dampening hole.

Description

Description
ARREST DEVICE FOR EXPLOSION RELIEF VALVE OF INTERNAL COMBUSTION ENGINE
Technical Field
[1] The present invention relates, in general, to arrest devices for explosion relief valves which absorb and disperse flames generated by explosions in internal combustion engines during flame discharge processes, and thus reduce the intensity of the flames and, more particularly, to an arrest device for an explosion relief valve of an internal combustion engine in which arrest plates are bent to have trapezoidal bent parts and are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one and flame dampening holes are thus densely formed between the bent parts, wherein a flame dispersion guide, which is formed by bending the medial portion of each bent part, is disposed at a medial position in each flame dampening hole, so that flames are not directly discharged through the flame dampening holes, and the flames are dispersed and whirled by the corresponding flame dispersion guides in the flame dampening holes, thus more effectively absorbing and dispersing the flames, thereby reducing the intensity of the flames. Background Art
[2] Generally, in internal combustion engines used in ships or the like, in order to generate power, fuel is supplied to an engine including several cylinders, the burning of which fuel generates high temperature and high pressure gas, and the cylinders convert the power into mechanical kinetic energy.
[3] Such internal combustion engines maintain relatively high internal temperature and pressure due to the high temperature and high pressure gas.
[4] Here, when the internal pressure of the engine becomes greater than a predetermined pressure (typically, ranging from 0.03 to 0.05 kg/cm3), the amount of internal gas corresponding to the excessively increased pressure is discharged outside of the engine to maintain normal internal pressure.
[5] The reason for this is that if an explosion occurs due to excessive pressure in the engine, components around the engine may be damaged, or casualties may be induced by the accident.
[6] Meanwhile, in order to prevent flames from being erupted outside of the engine when explosion occurs in the internal combustion engine, an arrest device for explosion relief is typically installed on the internal combustion engine.
[7] Such an arrest device includes an arrest plate having a multilayered structure and is open in the central portion thereof. The arrest device is installed on the engine such that the open central portion of the arrest device is aligned with the opening of the engine. Furthermore, a plurality of flame dampening holes, which extend in radial directions, is formed in the arrest plate. Therefore, the arrest device absorbs and disperses flames generated by an explosion in the engine, thus dampening the flames, thereby protecting the components around the engine, and preventing casualties.
[8] In the conventional arrest device, the flame dampening holes are formed in the arrest plates, but they are not dense. Hence, an effect of dampening flames by absorbing and dispersing the flames generated by explosion in the internal combustion engine is unsatisfactory. There is a problem in that some flames erupt outside of the engine.
[9] Moreover, in the conventional arrest device, the multilayered structure of the arrest plate is formed by curving the arrest plate in a spiral shape. Therefore, because it is difficult to form the multilayered structure, the workability is reduced. As well, when an explosion occurs in the engine, the multilayered structure may become undesirably broken as a result of pressure from the explosion. Disclosure of Invention Technical Problem
[10] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an arrest device for an explosion relief valve of an internal combustion engine in which arrest plates are bent to have trapezoidal bent parts and are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one and flame dampening holes are thus densely formed between the bent parts, wherein a flame dispersion guide, which is formed by bending the medial portion of each bent part, is disposed at a medial position in each flame dampening hole, so that flames are not directly discharged through the flame dampening holes, but are dispersed and whirled by the corresponding flame dispersion guides in the flame dampening holes, thus more effectively absorbing, dispersing and dampening the flames, thereby markedly enhancing the efficiency and stability of the arrest device.
[11] Another object of the present invention is to provide an arrest device for an explosion relief valve of an internal combustion engine in which the arrest plates, each of which has a ring shape, are stacked on top of one another by welding the opposite edges thereof, unlike the conventional technique, in which the multilayered structure is formed by curving the arrest plate into a spiral shape, thus firmly maintaining the stacked structure against impacts attributable to an explosion of the internal combustion engine, thereby enhancing the reliability of the product. Technical Solution
[12] In order to accomplish the above objects, the present invention provides an arrest device for an explosion relief valve installed on an opening of an internal combustion engine, the arrest device having a multilayered structure to absorb and disperse flames generated by an explosion occurring in the internal combustion engine, thus reducing intensity of the flames, the arrest device including: a plurality of arrest plates stacked on top of one another, each of the arrest plates being shaped by pressing, and including: bent parts arranged along a longitudinal direction of the arrest plate, and each of the bent parts having a trapezoidal depression; and a flame dispersion guide formed on a medial portion of an upper surface of each of the bent parts, the flame dispersion guide having guide holes, each of which is reduced in width from a center thereof to opposite ends thereof, and a hemispheric depression formed in a lower surface of the flame dispersion guide, the hemispheric depression being open downwards, wherein the arrest plates are stacked on top of one another such that the trapezoidal bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding trapezoidal depressions of the bent parts of the upper one of the arrest plates so that a flame dampening hole is defined between the bent parts, which are spaced apart from each other by a predetermined distance, wherein each of the flame dispersion guides is disposed at a medial position in the corresponding flame dampening hole, thus dispersing a flame upwards, downwards and in a longitudinal direction of the flame dampening hole.
[13] Preferably, each of the arrest plates, which are stacked onto each other, may be shaped into a ring shape through an independent process, and the arrest plates may be integrated with each other by welding the opposite edges thereof to each other.
Advantageous Effects
[14] In an arrest device for an explosion relief valve of an internal combustion engine according to the present invention, arrest plates are bent to have trapezoidal bent parts and are stacked on top of one another such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one and flame dampening holes are thus densely formed between the bent parts. A flame dispersion guide, which is formed by bending the medial portion of each bent part, is disposed at a medial position in each flame dampening hole, so that flames are not directly discharged through the flame dampening holes, but are dispersed and whirled by the corresponding flame dispersion guides in the flame dampening holes, thus more effectively absorbing and dispersing the flames, thereby reducing their intensity. Therefore, the efficiency and stability of the arrest device are markedly enhanced. Moreover, the arrest plates, each of which has a ring shape, are stacked on top of one another by welding the opposite edges thereof, unlike the conventional technique, in which the multilayered structure is formed by curving the arrest plate into a spiral shape. Hence, the stacked structure can firmly withstand impacts attributable to an explosion occurring in the internal combustion engine. Thus, the reliability of the product is enhanced. Brief Description of the Drawings
[15] FIG. 1 is a sectional view illustrating the installation of an arrest device for an explosion relief valve of an internal combustion engine, according to an embodiment of the present invention;
[16] FIG. 2 is a plan view of the arrest device according to the present invention;
[17] FIG. 3 is a perspective view showing an arrest plate constituting the arrest device according to the present invention;
[18] FIG. 4 is a side sectional view showing arrest plates which are in the separated state, according to the present invention;
[19] FIG. 5 is a side sectional view showing the stacked arrest plates according to the present invention; and
[20] FIG. 6 is a front sectional view showing the stacked arrest plates according to the present invention. Best Mode for Carrying Out the Invention
[21] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.
[22] As shown in FIG. 1, the present invention provides an arrest device, which is constructed such that arrest plates having a multilayered structure are installed on an opening of an internal combustion engine to effectively absorb and disperse flames generated by an explosion occurring in the internal combustion engine, thus reducing the intensity of the generated flames.
[23] In detail, as shown in FIGS. 2 through 6, the arrest device for an explosion relief valve of internal combustion engines according to the present invention includes a plurality of arrest plates 10, which are stacked onto each other, and each of which is shaped by pressing. Each arrest plate 10 has bent parts 11, which are arranged along the longitudinal direction of the arrest plate 10, and each arrest plate has a trapezoidal depression 12. A flame dispersion guide 15 is formed on the medial portion of the upper surface of each bent part 11. The flame dispersion guide 15 has guide holes 16, each of which is reduced in width from the center thereof to the opposite ends thereof, and a hemispheric depression 17, which is formed in the lower surface of the flame dispersion guide 15 and is open downwards.
[24] The arrest plates 10 are stacked on top of one another such that the trapezoidal bent parts 11 of the lower of the adjacent arrest plates 10 are inserted into the corresponding trapezoidal depressions 12 of the bent parts 11 of the upper arrest plate 10 so that a flame dampening hole 13 is defined between the bent parts 11, which are spaced apart from each other by a predetermined distance. Therefore, each flame dispersion guide 15 is disposed at the medial position in the corresponding flame dampening hole 13, thus dispersing a flame upwards, downwards and in the longitudinal direction of the flame dampening hole 13.
[25] Here, each of the arrest plates 10 are stacked onto each other and shaped into a ring shape through an independent process. The arrest plates 10 are integrated with each other by welding the opposite edges thereof together.
[26] In the drawings, reference numeral 5 denotes a cover.
[27] The operation and effects of the present invention having the above-mentioned construction will be explained herein below.
[28] As shown in FIG. 1, in the embodiment of the present invention, the arrest plates having the multilayered structure are installed on the opening of the internal combustion engine.
[29] In further detail, the trapezoidal bent parts 11, each of which has the flame dispersion guide 15 on the medial portion thereof, are formed in each arrest plate 10 by pressing. Each arrest plate 10 is formed into a ring shape by welding the opposite ends thereof to each other. The ring-shaped arrest plates 10 are stacked on top of one another.
[30] At this time, the arrest plates 10 are stacked onto each other such that the bent parts
11 of the lower of the adjacent arrest plates 10 are inserted into the corresponding trapezoidal depressions 12 of the bent parts 11 of the upper one. As well, the flame dampening holes 13 are defined in the respective trapezoidal depressions 12 between the bent parts 11 of the adjacent arrest plates 10. Thus, the flame dampening holes 13 are arranged in the arrest device in the vertical direction and in the circumferential direction and are spaced apart from each other at regular intervals.
[31] In addition, the flame dispersion guides 15 of the lower one of the adjacent arrest plates 10 are inserted into the medial portions of the corresponding flame dampening holes 13 of the upper one.
[32] In the arrest device of the present invention having the above-mentioned stacking structure, the flame dampening holes 13, which are spaced apart from each other at regular intervals and are arranged in the arrest plates 10 in the vertical direction and the circumferential direction, primarily absorb and disperse flames generated by an explosion of the internal combustion engine, thus primarily reducing the intensity of the flames.
[33] Furthermore, the flames are not directly discharged from the flame dampening holes
13 to the outside of the arrest device but are secondarily absorbed and dispersed by the flame dispersion guides 15, which are disposed in the medial portions of the corresponding flame dampening holes 13. Hence, the intensity of the flames can be further effectively weakened.
[34] In detail, a flame generated by the internal combustion engine is drawn into and dispersed by the flame dampening holes 13. Some of each flame is drawn into the corresponding flame dampening hole 13 and is guided upwards along the upper surface of the corresponding flame dispersion guide 15. Remaining portions of the flame are guided into the corresponding hemispheric depression 17 through the front guide hole 16 of the flame dispersion guide 15. Some of the flame is guided downwards into the hemispheric depression 17. Remaining portions of the flame are guided into the corresponding flame dampening hole 13 through the rear guide hole 16 of the flame dispersion guide 15. Thereafter, the flames are discharged from the flame dampening holes 13 to the outside of the arrest device.
[35] In other words, flames, which are dispersed by and drawn into the flame dampening holes 13 are secondarily dispersed in the flame dampening holes 13 upwards, downwards and in the longitudinal directions of the flame dampening holes 13. In this process, the flames whirl in the flame dampening holes 13, so that the contact surface between the flames and the arrest device and the time over which the flames pass through the arrest device, are further increased. Therefore, an efficiency of reducing the intensities of flames using the flame absorption and dispersion method can be further enhanced.
[36] Furthermore, in the present invention, the arrest plates 10 are stacked on top of one another and are integrated with each other by welding junctions of the opposite edges of the arrest plates 10 to each other. Furthermore, when the arrest plates 10 are stacked on top of one another, the bent parts 11 of the lower of the adjacent arrest plates 10 are inserted into the corresponding trapezoidal depressions 12 of the bent parts 11 of the upper one. Therefore, the arrest plates 10 are securely supported by each other. Thus, ability to withstand high pressure attributable to an explosion in the internal combustion engine can be further enhanced. As a result, the present invention can solve a problem of the conventional spiral stacked structure, whereby the stacked structure is broken by high pressure attributable to the explosion.
[37] As described above, in the present invention, the arrest plates, each of which is bent in a zigzag manner to form the trapezoidal bent parts, are stacked onto each other such that the bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding bent parts of the upper one so that the flame dampening holes are closely formed. The flame dampening holes, which are formed at upper and lower positions adjacent to each other, form zigzag flame discharge passages using the guide holes of the flame dispersion guides. Therefore, flames, which are generated by an explosion of the internal combustion engine pass through the flame discharge passages in a zigzag manner. Thereby, flames can be effectively absorbed and dispersed by the arrest device of the present invention. Hence, the efficiency with which the intensities of flames are reduced and the reliability are improved. Moreover, unlike the conventional techniques having the spiral stacked structure, the arrest plates, each of which has a ring shape, are stacked on top of one another and are welded at opposite edges thereof to each other. Accordingly, the arrest device of the present invention can reliably maintain the stacked structure against impacts attributable to an explosion of the internal combustion engine.
[38] Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims
[1] An arrest device for an explosion relief valve installed on an opening of an internal combustion engine, the arrest device having a multilayered structure to absorb and disperse flames generated by an explosion occurring in the internal combustion engine, thus reducing intensity of the flames, the arrest device comprising: a plurality of arrest plates stacked on top of one another, each of the arrest plates being shaped by pressing, and including: bent parts arranged along a longitudinal direction of the arrest plate, and each of the bent parts having a trapezoidal depression; and a flame dispersion guide formed on a medial portion of an upper surface of each of the bent parts, the flame dispersion guide having guide holes, each of which is reduced in width from a center thereof to opposite ends thereof, and a hemispheric depression formed in a lower surface of the flame dispersion guide, the hemispheric depression being open downwards, wherein the arrest plates are stacked on top of one another such that the trapezoidal bent parts of the lower one of the adjacent arrest plates are inserted into the corresponding trapezoidal depressions of the bent parts of the upper one of the arrest plates so that a flame dampening hole is defined between the bent parts, which are spaced apart from each other by a predetermined distance, wherein each of the flame dispersion guides is disposed at a medial position in the corresponding flame dampening hole, thus dispersing a flame upwards, downwards and in a longitudinal direction of the flame dampening hole.
[2] The arrest device according to claim 1, wherein each of the arrest plates, which are stacked onto each other, is shaped into a ring shape through an independent process, and the arrest plates are integrated with each other by welding the opposite edges thereof to each other.
EP08793689A 2008-05-23 2008-09-04 Arrest device for explosion relief valve of internal combustion engine Withdrawn EP2294297A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080048260A KR100981451B1 (en) 2008-05-23 2008-05-23 Arrest device for explosion relief valve of internal combustion engine
PCT/KR2008/005212 WO2009142363A1 (en) 2008-05-23 2008-09-04 Arrest device for explosion relief valve of internal combustion engine

Publications (1)

Publication Number Publication Date
EP2294297A1 true EP2294297A1 (en) 2011-03-16

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EP08793689A Withdrawn EP2294297A1 (en) 2008-05-23 2008-09-04 Arrest device for explosion relief valve of internal combustion engine

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EP (1) EP2294297A1 (en)
JP (1) JP2012503125A (en)
KR (1) KR100981451B1 (en)
CN (1) CN102066720A (en)
WO (1) WO2009142363A1 (en)

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WO2009142363A1 (en) 2009-11-26
KR20090122058A (en) 2009-11-26
KR100981451B1 (en) 2010-09-13
CN102066720A (en) 2011-05-18
JP2012503125A (en) 2012-02-02

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