KR102206302B1 - Apparatus for preventing flame using non-flammable fabric - Google Patents

Abstract

The present invention relates to an anti-flammation device for preventing fire and explosion due to the blown gas of a vehicle muffler entering and exiting a gas explosion hazardous facility, and a fire-retardant fiber-type anti-ignition device that is easy to attach and detach using a fire-retardant fiber and is lightweight To provide.
Fire-resistant fiber-type anti-flammability device of the present invention includes a cover for covering the outer peripheral surface of the muffler; A ignition prevention part connected to one end of the cover part and covering the exhaust port of the muffler; And a fixing part that makes the cover part in close contact with the outer circumferential surface of the muffler, and the cover part may be made of a flexible fireproof fiber material.

Description

Fire-resistant fiber type anti-flammation device{APPARATUS FOR PREVENTING FLAME USING NON-FLAMMABLE FABRIC}

The present invention relates to a fire prevention device for preventing fire and explosion due to the blown gas of a vehicle muffler entering and exiting a gas explosion danger facility, and a fire prevention fiber type fire prevention device that is easy to attach and detach using a fireproof fiber and is lightweight. About.

In the exhaust port (muffler) of a vehicle using an internal combustion engine, exhaust flame may be injected together with exhaust gas during operation or driving. When such exhaust flame reacts with flammable explosives such as flammable gas, oil, dust, or compounds, accidents such as fire and explosion may occur.

Therefore, vehicles entering and exiting production or management facilities where flammable explosive substances may occur need a means to prevent accidents such as fire and explosion caused by exhaust sparks.

In particular, the KOGAS-EHSQI-07101 EHSQ guideline for the Korea Gas Corporation stipulates that "Vehicles entering and exiting the LNG and natural gas facility areas are permitted vehicles, and must be equipped with a flame arrester at the exhaust port."

The conventional anti-flammation device is made of metal, so it is heavy and has a risk of corrosion, and an expensive manufacturing cost is required due to the nature of the material.

Korean Patent Publication No. 10-2018-0047908 discloses an anti-salt-fire protection net.

Korean Patent Publication No. 10-2018-0047908

The present invention relates to an anti-flammation device for preventing fire and explosion due to the blown gas of a vehicle muffler entering and exiting a gas explosion hazardous facility, and a fire-retardant fiber-type anti-ignition device that is easy to attach and detach using a fire-retardant fiber and is lightweight. To provide.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. I will be able to.

Fire-resistant fiber-type anti-flammability device of the present invention includes a cover for covering the outer peripheral surface of the muffler; A ignition prevention part connected to one end of the cover part and covering the exhaust port of the muffler; And a fixing part that makes the cover part in close contact with the outer circumferential surface of the muffler, and the cover part may be made of a flexible fireproof fiber material.

In the fire-retardant fiber-type flame retardant device of the present invention, the fire-retardant fiber material may include one or more of carbon fiber, silica fiber, and alumina fiber.

In the fire-retardant fiber-type anti-flammability device of the present invention, the fixing part is a wire or spring that expands and contracts in the longitudinal direction, and the cover part and the muffler are wound around the outer circumferential surface of the cover part where the inner side of the cover part and the outer circumferential surface of the muffler face each other. The fixing part may be in close contact with elasticity.

In the fireproof fiber-type anti-fire device of the present invention, the fixing part is a ring-shaped band whose circumference is adjustable in length, and the cover part is wound around the outer circumferential surface of the cover part, where the inner side of the cover part and the outer circumferential surface of the muffler face each other. It may be to pressurize to be in close contact with.

In the fire-retardant fiber-type anti-ignition device of the present invention, a plurality of the fixing parts may be provided, and each of the fixing parts may be pressed at a position spaced apart from each other in the extension direction of the muffler to closely contact the outer circumferential surface of the muffler.

In the fire-resistant fiber-type anti-flammability device of the present invention, the fixing part may be a magnetic material that can be magnetically coupled to the muffler, and may be in close contact with the outer circumferential surface of the muffler with the cover part between the outer circumferential surface of the cover part.

In the fireproof fiber-type anti-flammability device of the present invention, a plurality of the fixing parts may be provided, and the plurality of fixing parts may be arranged spaced apart from each other at the same position in the longitudinal direction of the cover part.

In the fire-retardant fiber-type anti-fire device of the present invention, a first Velcro region is formed on one surface of the fixing portion, a second Velcro region is formed on the outer surface of the cover portion, and the first Velcro region and the second Velcro region are The fixing part may be in close contact with the cover part so as to face each other, and the fixing part and the cover part may be coupled with a Velcro formed in the first Velcro area or the second Velcro area.

In the fire-retardant fiber-type anti-ignition device of the present invention, the fixing part may be a magnetic material polarized in a direction perpendicular to the surface of the fixing part in contact with the cover part.

The fire-retardant fiber-type anti-flammability device of the present invention may be provided with an anti-flammation film facing the exhaust port between the exhaust port and the fire prevention part.

In the fire-retardant fiber-type anti-flammability device of the present invention, the anti-inflammatory film may be supported by a support, and the support may have both ends fixed to the inner wall of the cover.

In the fire-retardant fiber-type anti-ignition device of the present invention, the support part includes a first support part and a second support part, one surface of the first support part and one surface of the second support part face each other, and the first support part and the second support part An edge of the anti-inflammatory film may be inserted into a gap formed as an additional layer.

In the fire-retardant fiber-type flame-retardant device of the present invention, the anti-flammation film or the flame-retardant part may include one or more of carbon fiber, silica fiber, alumina fiber, wire mesh, sintered metal, steel wool, and foamed metal.

In the fire-retardant fiber-type anti-flammability device of the present invention, the cover part may be provided with a plurality of heat-dissipating holes penetrating inside and outside the cover part to prevent heat accumulation.

In the fire-retardant fiber-type anti-ignition device of the present invention, the anti-ignition unit may face the exhaust port, and the anti-ignition unit may form a concave portion or a convex portion in the extension direction of the muffler.

The fire-retardant fiber-type anti-ignition device of the present invention is made of a fiber containing a component having an anti-inflammatory function such as carbon, and is not fixed to a specific shape, and can be manufactured in light weight. In addition, since the fire-retardant fiber containing a component having an anti-inflammatory function is cheaper than metal, manufacturing cost can also be reduced.

Since the fire-resistant fiber-type anti-ignition device of the present invention is manufactured to be lighter than the conventional metal-type anti-ignition device, the inertia generated by vehicle vibration acts relatively small, and the probability that the anti-fire device is separated from the muffler can be drastically reduced. have.

The fire-retardant fiber-type anti-ignition device of the present invention minimizes the density of the contact flame and enables smooth heat sinking by forming a convex portion or a concave portion in the flame-preventing portion.

The anti-flammation film of the fire-retardant fiber-type anti-flammability device of the present invention can further increase the anti-inflammatory performance of the entire fire-retardant fiber-type anti-flammation device by assisting the anti-flammation performance of the anti-fire unit. In addition, since the flame-retardant film and the flame-retardant part are doublely arranged at the exhaust port, even if one of the flame-retardant film and the flame-prevention part is damaged, the other performs the anti-flame function, and the stability of the device can be improved.

The fire-retardant fiber-type anti-flammability device of the present invention mechanically couples the flame retardant membrane to the support, thereby stably maintaining the coupling in a high temperature environment, and facilitates replacement of the flame retardant membrane.

Since the fixing part of the fireproof fiber-type anti-fire device of the present invention applies a force with a line instead of applying a force with a point as in the prior art, the force is distributed rather than the point support, thereby reducing the burden on the muffler.

1 is a perspective view showing a fire-resistant fiber-type anti-ignition device of the present invention.
2 is a plan view showing an embodiment of a fixing unit.
3 is a perspective view showing another embodiment of the fixing unit.
4 is a plan view showing the fixing part of FIG. 3.
5 is a cross-sectional view showing an anti-inflammatory membrane and a support.
6 is a longitudinal cross-sectional view showing an anti-inflammatory film and a support.
7 is a perspective view showing another embodiment of the flame prevention unit.
8 is a conceptual diagram showing the ignition prevention unit of FIG. 7.
9 is a photograph showing a conventional flash prevention device.
10 is a photograph showing a form in which a conventional anti-ignition device is mounted on a muffler.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms specifically defined in consideration of the configuration and operation of the present invention may vary according to the intention or custom of users or operators. Definitions of these terms should be made based on the contents throughout the present specification.

1 is a perspective view showing a fire-resistant fiber-type anti-ignition device of the present invention. 2 is a plan view showing an embodiment of the fixing unit 300. 3 is a perspective view showing another embodiment of the fixing unit 300. 4 is a plan view showing the fixing part 300 of FIG. 3. 5 is a cross-sectional view showing the anti-flammation film 120 and the support 110. 6 is a longitudinal cross-sectional view showing the anti-inflammatory film 120 and the support 110. 7 is a perspective view showing another embodiment of the ignition prevention unit 100. 8 is a conceptual diagram showing the ignition prevention unit 100 of FIG. 7. 9 is a photograph showing a conventional flash prevention device. 10 is a photograph showing a form in which a conventional anti-ignition device is mounted on the muffler 1.

Hereinafter, the configuration and function of the fire-retardant fiber-type anti-fire device of the present invention will be described with reference to FIGS. 1 to 10.

As shown in Fig. 1, the flame preventing device of the present invention is connected to the cover portion 200 covering the outer circumferential surface of the muffler 1, and is connected to one end of the cover portion 200 and covers the exhaust port of the muffler 1 It includes the prevention part 100 and the fixing part 300 which makes the cover part 200 in close contact with the outer peripheral surface of the muffler 1, and the cover part 200 may be a flexible fireproof fiber material.

The ignition prevention unit 100 or the cover unit 200 may be made of a breathable fireproof fiber material. The ignition prevention unit 100 or the cover unit 200 is made of a fiber containing a component having high thermal conductivity, and may perform an anti-inflammatory function while gas passes through the fiber material.

The fire-retardant fiber-type anti-fire device of the present invention is made of a fire-retardant fiber material that is flexible in shape change, so that discomfort during attachment and detachment can be eliminated, and solid fixation can be possible regardless of the shape and size of the muffler (1). .

As shown in FIG. 9, since the body of the conventional anti-ignition device is formed of a high rigidity metal bundle, the weight is about 2 to 6 kg and the shape is fixed. Therefore, it is difficult to fix it to the muffler 1, and there has been a frequent phenomenon that the fire prevention device is separated from the muffler 1 due to vibration due to vehicle operation. Since the ignition prevention device is installed under the rear of the vehicle, it is difficult to recognize departure. If the flame preventing device is separated from the muffler 1, it may lead to a fire or an explosion accident because it cannot prevent the flame from being ejected from the exhaust port as well as a problem of loss. In addition, corrosion of the metal may cause a change in the specifications and damage of the ignition prevention device itself.

As shown in FIG. 10, in the related art, since the anti-burning device having a large weight is installed at the end of the muffler 1, the center of gravity moves in the direction of D, and the end of the muffler 1 is It can shake greatly and damage the muffler (1).

The fire-retardant fiber-type anti-ignition device of the present invention is made of a fiber containing a component having an anti-inflammatory function such as carbon, and the cover part 200, which is a body, is not fixed to a specific shape and can be manufactured in a light weight. In addition, since the fire-retardant fiber containing a component having an anti-inflammatory function is cheaper than metal, manufacturing cost can also be reduced. The fireproof fiber used in the present invention is a woven fabric in which warp (warp) and weft (weft) are crossed up and down with each other, or by mechanical operation, heat bonding or using chemicals to bond or entangle the fibers. It may be made of a non-woven fabric (non-woven fabric). The fire protection fiber material may include one or more of carbon fiber, silica fiber, and alumina fiber.

Since the fireproof fiber-type anti-flammability device of the present invention is manufactured to be lighter than the conventional metal-type anti-ignition device, the inertia generated by vehicle vibration acts relatively small, and the probability that the anti-ignition device is separated from the muffler (1) is rapidly reduced. Can be reduced.

The carbon fiber may be a fiber containing a carbon component having an anti-inflammatory function. Preferably, it may be a typical fire-retardant fiber, carbon felt.

Carbon fiber is a flame-resistant fiber that has excellent protection against high heat and flame. Carbon fiber is heat-resistant fiber and can withstand up to 1200℃. Since the exhaust gas discharged from the vehicle's muffler 1 has a discharge temperature of 450°C, a sufficient fire protection effect can be expected with carbon fiber.

Silica fiber is a silica fabric used as a thermal insulation and insulation material for industrial and industrial use, and may be a pure silicic anhydride material made by chemical leaching of glass fiber. The silica fiber may be a refractory material with no change in strength or distortion in shape at high temperatures. Silica fiber is a material with excellent heat resistance that melts at 1600°C or higher.

The alumina fiber may be a fiber containing alumina as a main material. Alumina (Al2O3) is a kind of ceramics and is used as a substrate for mechanical parts or integrated circuits because it has excellent hardness and insulation. Alumina fibers can be prepared in the following way. A spinning solution containing basic aluminum chloride, a silicon compound, an organic polymer, and water is spun by a blowing method, and the resulting aggregate of short alumina fiber precursors (laminated sheet) is needed, and then fired. At this time, in the sintering process, volatile components are removed and crystallization of alumina and silica proceeds to proceed to convert to alumina fibers to be manufactured. Alumina fiber has a strong resistance to bending and is hard to break.

The cover part 200 made of fireproof fiber may have a cylindrical pipe shape extending in the longitudinal direction of the muffler 1. The inner diameter of the cover part 200 may be larger than the outer diameter of the muffler 1. The inner diameter of the cover portion 200 is sufficiently larger than the outer diameter of the muffler 1 so that the muffler 1 can be easily inserted into the cover portion 200. Since the cover part 200 is a fiber, it can be easily attached to the muffler 1 with the fixing part 300.

As shown in FIG. 1, in one embodiment, the fixing part 300 may be a ring-shaped band in which the length of the circumference is adjustable. The fixing part 300 reduces the length of the circumference and tightens the cover part 200, so that a portion where the inner side of the cover part 200 and the outer circumferential surface of the muffler 1 face each other from the outer circumferential surface of the cover part 200 200) may be pressurized so as to be in close contact with the muffler 1. For example, the fixing part 300 may be a clamp.

As shown in FIG. 2, in another embodiment, the fixing part 300 may be a wire or a spring that expands and contracts in the longitudinal direction. The part where the inner side of the cover part 200 and the outer circumferential surface of the muffler 1 face each other is wound around the outer circumferential surface of the cover part 200 to make the cover part 200 and the muffler 1 in close contact with the elasticity of the fixing part 300 I can. The fixing part 300 may be an elastic material having a restoring force. The fixing part 300 may be provided in a ring shape.

As shown in FIGS. 9 and 10, the conventional anti-ignition device fixes the anti-ignition device to the muffler 1 by pressing the muffler 1 with a bolt or the like. Since the bolt is fixed, the force can be concentrated at the point where the end of the bolt contacts. Since the conventional anti-fire device is a metal bundle and has a large weight, in order to stably fix the anti-fire device to the muffler 1, a large force must be concentrated on the end of the bolt. Therefore, damage such as scratching or stamping may occur on the muffler 1 by the end of the bolt.

In addition, since the ignition prevention device is exposed to a high temperature and high temperature environment for a long time, thermal deformation may occur in the bolt, and attachment and detachment may become difficult due to the bolt having thermal deformation.

Since the fixing part 300 of the present invention applies a force with a line rather than applying a force with a point as in the prior art, the force is distributed rather than a point support, thereby reducing the burden applied to the muffler 1.

In addition, since the total weight of the fire-retardant fiber-type anti-fire device of the present invention is smaller than that of the conventional anti-fire device, the burden on the muffler 1 can be minimized because the anti-fire device is fixed with a relatively small force.

If the width and elasticity of the fixing part 300 are adjusted, the ignition prevention device can be stably fixed to the muffler 1 without damaging the muffler 1.

The fixing part 300 may be provided in plural. Each of the fixing parts 300 may press the cover part 200 at a position spaced apart from each other in the extension direction of the muffler 1 to make it in close contact with the outer peripheral surface of the muffler 1. When the fixing part 300 is installed in only one position, the cover part 200 may float from the muffler 1 before and after the fixing part 300. When the contact portion between the cover part 200 and the muffler 1 is reduced, the heat dissipation function of the cover part 200 may decrease. In order to prevent this, the fixing part 300 may be installed at at least two points or more. When the two points are fixed with the fixing part 300 in the state where the cover part 200 is stretched in tension, the cover part 200 between the two fixing parts 300 can be completely in close contact with the outer circumferential surface of the muffler 1 .

In addition, when the contact area between the muffler 1 and the cover part 200 is increased, the flame of the exhaust gas flows backward and leakage can be prevented without passing through the ignition prevention device.

As shown in FIGS. 3 and 4, in another embodiment, the fixing part 300 may be a magnetic material capable of being magnetically coupled to the muffler 1. The fixing part 300 may be in close contact with the outer circumferential surface of the muffler 1 with the cover part 200 interposed therebetween on the outer circumferential surface of the cover part 200. The muffler 1 may be a material that reacts with a magnet made of stainless steel.

As shown in FIG. 3, a first Velcro area 311 may be formed on one surface of the fixing part 300, and a second Velcro area 313 may be formed on an outer surface of the cover part 200. The fixing part 300 may be in close contact with the cover part 200 so that the first Velcro area 311 and the second Velcro area 313 face each other. The fixing part 300 and the cover part 200 may be coupled with a Velcro formed in the first Velcro area 311 or the second Velcro area 313. Since the muffler 1 discharges high-temperature gas, the fixing unit 300 or the muffler 1 is heated above the Curie temperature of the material of the fixing unit 300 or muffler 1 according to a specific situation. Then, the coupling between the fixing part 300 and the muffler 1 may be released. In such a situation, in order to prevent the loss of the fixing part 300, the fixing part 300 may be combined with the cover part 200 with Velcro, which is an auxiliary fixing means. That is, since the fixing part 300 is fixed to the cover part 200 by magnetic force and mechanical coupling, it can be stably combined with the cover part 200.

As shown in FIG. 4, a plurality of fixing parts 300 may be provided, and the plurality of fixing parts 300 may be disposed at the same position in the longitudinal direction of the cover part 200 and spaced apart from each other. Specifically, the fixing parts 300 may be disposed at regular intervals along the outer periphery of the cover part 200. The fixing part 300 may prevent part of the cover part 200 from being lifted from the muffler 1 by bringing the cover part 200 into close contact with the muffler 1 in various directions.

As shown in FIG. 4, the fixing part 300 may be a magnetic material polarized in a direction perpendicular to the surface of the fixing part 300 in contact with the cover part 200. The fixing part 300 is a curved magnet having a curved surface corresponding to the surface of the muffler 1, and may be polarized to form N and S poles on both sides, respectively. When the plurality of fixing parts 300 are arranged, the fixing parts 300 adjacent to each other may be coupled to the muffler 1 so that the polarization direction is opposite.

As shown in FIGS. 3 and 5, an anti-flame film 120 may be provided between the exhaust port and the ignition prevention unit 100 to face the exhaust port. The anti-flammation film 120 may further enhance the anti-flame performance of the entire fire-retardant fiber-type anti-flammation device by assisting the anti-flammation performance of the flame-retardant unit 100. In addition, since the flame retardant film 120 and the flame preventing unit 100 are disposed in duplicate at the exhaust port, even if one of the flame retarding film 120 and the flame preventing unit 100 is damaged, the other performs an antiflammation function, and It can increase stability.

5 and 6, the anti-inflammatory film 120 may be supported by the support unit 110. Both ends of the support part 110 may be fixed to the inner wall of the cover part 200. The edge of the anti-inflammatory film 120 may be fixed by contacting the intermediate point of the support 110. The support part 110 may be a plate-shaped metal rod. Since the support 110 is exposed to a high heat environment, a metal material having high heat resistance and good heat loss may be advantageous.

The support part 110 may be provided in plural and may contact each other at a plurality of points of the edge of the anti-inflammatory film 120 to provide multipoint support. Since the anti-flame film 120 is exposed to a high heat environment, physical and chemical changes and deterioration of the anti-flame film 120 and surrounding parts of the anti-flame film 120 can be rapidly progressed, and in order to safely support the anti-flame film 120 Multipoint support may be desirable.

The support part 110 may support the anti-flammation film 120 in a mechanical structure. When the support 110 and the anti-flame film 120 are combined using chemical properties such as welding and adhesive, the following problems may occur.

Since the temperature of the exhaust port is 450° C. high-temperature gas is ejected, a high-temperature environment may be created on the exhaust port side. Accordingly, the properties of the material used for welding, bonding, etc. may be changed due to high heat, so that the bonding between the anti-flammation film 120 and the support 110 may be weakened.

In addition, the material used for welding, bonding, etc. may ignite in a high heat environment and cause another fire.

In addition, since the anti-flammation film 120 is most directly exposed to the exhaust gas ejected from the exhaust port, the lifespan of the anti-inflammatory film 120 may be reduced faster than that of other parts. Therefore, a structure in which the anti-inflammatory film 120 can be easily replaced may be desirable. When the welding or adhesive is replaced, it can be cumbersome because the welding mark and adhesive are removed and then re-bonded.

The fire-retardant fiber-type anti-flammability device of the present invention mechanically couples the flame-retardant film 120 and the support part 110 to stably maintain the coupling in a high-temperature environment, and the anti-flame film 120 can be easily replaced.

As shown in FIG. 6, the support part 110 may include a first support part 113 and a second support part 115. One surface of the first support part 113 and one surface of the second support part 115 face each other, and the edge of the anti-inflammatory film 120 may be inserted into a gap formed by the first support part 113 and the second support part 115. have.

The first support part 113 and the second support part 115 may be provided with exposed holes. The exposure hole of the first support part 113 and the exposure hole of the second support part 115 face each other, and the anti-flammation film 120 may be exposed to exhaust gas through the exposure hole. The area of the exposed hole may be smaller than the area of the anti-inflammatory film 120. The area of the exposed hole is smaller than the area of the anti-inflammatory film 120, so that the anti-inflammatory film 120 may be prevented from being separated through the exposed hole.

The anti-flame film 120 may include at least one of carbon fiber, silica fiber, alumina fiber, metal mesh, sintered metal, steel wool, and foamed metal. Carbon fiber, silica fiber, alumina fiber, wire mesh, sintered metal, steel wool, or foamed metal may be a heat-resistant material and have high anti-inflammatory performance. The principle of flame propagation prevention is that when a high-temperature flame comes into contact with a wall surface where the combustion gas passes through a very dense (40 mesh or more) wall such as a wire mesh or sintered metal, the heat is rapidly deprived of heat by heat conduction and the combustion stops as it becomes low temperature. , It uses the principle that the flame does not propagate as the flame is extinguished because the rate of generation (burning rate) of molecules required for the reaction is less than the rate of loss (heating rate) (anti-flammation phenomenon in the slit). Therefore, the material used for the anti-flame film 120 may be brass or stainless steel having high thermal conductivity.

7 and 8, in order to increase the contact surface with the exhaust gas discharged from the exhaust port, the ignition prevention unit 100 facing the exhaust port may form a concave portion or a convex portion in the extending direction of the muffler 1. I can.

가 된다. 따라서, 인화방지부(100)가 원뿔 형상이 되면, 평면 형상일 때 보다 면적이

배 넓어지게 된다.In an embodiment, as shown in FIG. 8, the fire-retardant fiber-type anti-fire device of the present invention may have a structure in which the conical anti-fire part 100 is coupled to the end of the cylindrical cover part 200. . When h is the height of the cone, which is the depth of the convex portion or the concave portion of the ignition prevention unit 100, and the diameter of the cover unit 200 is 2r, the area of the ignition prevention unit 100 is

Becomes. Therefore, when the ignition prevention unit 100 has a conical shape, the area is

It will be doubled.

The principle of ignition prevention is to absorb active molecules required for combustion from the flame and extinguish the flame by cooling the flame below the minimum temperature required for flame propagation. Therefore, it is desirable to minimize the density of the contacted flame per unit area by increasing the material in contact with the flame, and to make the heat sink smooth in a structure having a large heat capacity by sufficiently increasing the volume or mass of the material in contact with the flame. It may be desirable. The fire-retardant fiber-type anti-ignition device of the present invention may minimize the density of the contact flame and smooth heat sinking by forming a convex portion or a concave portion in the flame-preventing portion 100.

The cover part 200 may be provided with a plurality of heat loss holes 410 penetrating inside and outside the cover part 200 to prevent heat accumulation. When an anti-flammation device is installed at the exhaust port of the muffler 1, the temperature of the muffler 1 may increase because the flow rate of gas is slowed. If the temperature is kept elevated, the anti-inflammatory function will decrease, so it is necessary to remove heat. To this end, a heat dissipation hole 410 may be formed in the cover part 200. The diameter of the heat loss hole 410 may be determined in consideration of the flame propagation speed for extinguishing and the flow speed of the heat fluid. Heat may be discharged through convection or radiation through the heat dissipation hole 410. In addition, the cover portion 200 of the fire-retardant fiber-type anti-ignition device of the present invention may be made of a material having high thermal conductivity and may function as a heat dissipation. When a plurality of heat-dissipating holes 410 are formed in the cover part 200, the heat dissipation effect can be maximized because the surface of the cover part 200 makes more contact with the air than in a flat state without holes.

Although the embodiments according to the present invention have been described above, these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent ranges of embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

1...Muffler 100...Fire protection part
110...support 113...first support
115...second support 120...anti-flammable membrane
200...cover part 300...fixed
311...1st Velcro area 313...2nd Velcro area
410...heat loss hole

Claims (15)

A cover portion covering the outer peripheral surface of the muffler;
A ignition prevention part connected to one end of the cover part and covering the exhaust port of the muffler; And
Including; a fixing portion for intimately contacting the cover portion to the outer peripheral surface of the muffler,
The cover part is a flexible fireproof fiber material,
The fixing part,
It is a magnetic material that can be combined with the muffler by magnetic force,
It is in close contact with the outer circumferential surface of the muffler with the cover part between the outer peripheral surface of the cover part
A first Velcro region is formed on one side of the fixing part,
A second Velcro region is formed on the outer surface of the cover part,
The fixing part is in close contact with the cover part so that the first Velcro area and the second Velcro area face each other,
The fixing part and the cover part is a fire-retardant fiber-type fire prevention device that is coupled with a Velcro formed in the first Velcro area or the second Velcro area. The method of claim 1,
The fire-retardant fiber material is a fire-retardant fiber-type anti-fire device comprising at least one of carbon fiber, silica fiber, and alumina fiber. delete delete delete delete The method of claim 1,
The fixing part is provided in plurality,
Fire-retardant fiber-type anti-flammability device that is disposed to be spaced apart from each other at the same position in the longitudinal direction of the cover part. delete The method of claim 1,
The fixing portion is a fire-resistant fiber-type anti-flammability device that is a magnetic material polarized in a direction perpendicular to the surface of the fixing portion in contact with the cover portion. The method of claim 1,
Fire-retardant fiber-type anti-flammability device comprising an anti-flammable film facing the exhaust port between the exhaust port and the fire prevention part. The method of claim 10,
The anti-inflammatory film is supported by a support,
The support portion is a fire-retardant fiber-type anti-fire device that has both ends fixed to the inner wall of the cover portion. The method of claim 11,
The support includes a first support and a second support,
One surface of the first support part and one surface of the second support part face each other,
Fire-retardant fiber-type anti-flammability device in which an edge of the anti-inflammatory film is inserted into a gap formed by the first support part and the second support part. The method of claim 10,
The flame-retardant film or the flame-retardant unit is a fire-retardant fiber-type flame-retardant device comprising at least one of carbon fiber, silica fiber, alumina fiber, metal mesh, sintered metal, steel wool, and foamed metal. The method of claim 1,
The fire-retardant fiber-type anti-flammable device is provided with a plurality of heat-dissipating holes penetrating the inside and outside of the cover part to prevent heat accumulation. The method of claim 1,
The ignition prevention unit faces the exhaust port,
The fire-retardant fiber-type anti-fire device to form a concave portion or a convex portion in the extension direction of the muffler.

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