KR101353288B1 - Insulating cover for commercial vehicle exhaust pipe - Google Patents

Abstract

An insulating cover for a commercial vehicle exhaust pipe is disclosed. The insulating cover for a commercial vehicle exhaust pipe covers the outer side of a commercial vehicle exhaust pipe to block heat loss of the exhaust pipe. The insulating cover for a commercial vehicle exhaust pipe comprises a cover unit in a sheet form including a first side coming in contact with the outer side of the exhaust pipe when the insulating cover covers the outer side of the exhaust pipe, and a second side which is the back side of the first side; a heat insulator layer positioned on the first side and covering the outer side of the exhaust pipe along with the cover unit for heat insulation of the exhaust pipe; and a metal net for keeping a bent shape when the cover unit and the heat insulator layer are bent, which is placed on the upper portion of the heat insulator layer and of which edge is fixed at the first side while covering the heat insulator layer.

Description

Heat Insulation Cover for Commercial Vehicle Exhaust Pipe {INSULATING COVER FOR COMMERCIAL VEHICLE EXHAUST PIPE}

The present invention relates to a heat insulation cover, and more particularly, to a heat insulation cover for a commercial vehicle exhaust pipe installed around the exhaust pipe of a commercial vehicle to insulate and heat the exhaust pipe to prevent heat loss on the exhaust pipe.

Diesel engines are mainly used as a power source for large commercial vehicles such as buses and trucks due to their high thermal efficiency and reduced fuel efficiency.

However, the exhaust gas emitted from diesel engines was classified as a class 1 carcinogen, and as the number of commercial vehicles increased, the exhaust gas emission from diesel engines became a serious environmental problem.

To alleviate these environmental problems, many developed countries are tightening their vehicle's emission standards and forcing them to reduce their emissions from diesel engines. These regulations have been strengthened around Europe and the United States, and Korea is now joining them to strengthen regulations.

Since the first emission standard for gasoline vehicles was set up in 1980, the emission limit of the gas was expanded to gasoline and diesel vehicles, and has been gradually strengthened every year. For example, in 2014, Euro 6, which is a more stringent regulation than the Euro 5 emission limit in 2009, will be implemented. Euro 6 should reduce 80% of nitrogen oxide and 60% of dust contained in exhaust gas more than Euro 5. As the exhaust emission standards of vehicles are strengthened, commercial vehicles produced from 2014 should be equipped with an exhaust emission reduction device connected to an exhaust pipe through which harmful substances such as nitrogen oxides are emitted.

Hazardous exhaust gas emission reduction device is a device that collects particulate matter (PM) discharged from diesel engine in filter and burns it. Such a harmful exhaust emission reduction device is a selective catalytic reduction (SCR).

The selective catalytic reduction device is connected to the exhaust pipe of the vehicle and is closely related to the temperature of the exhaust pipe. That is, the selective catalytic reduction device prevents heat loss of the exhaust pipe so that the temperature at which the catalyst is efficiently reacted (for example, 300 to 380 ° C.) must be kept constant so that problems such as damage to the device and deterioration of output power do not occur.

As such, it is very important to prevent the heat loss of the exhaust pipe in order to prevent the problem of the harmful exhaust emission reduction device such as the selective catalytic reduction device and the reduction of the output power and to increase the reduction efficiency of the harmful substances. However, in the case of commercial vehicles such as buses and trucks, valves, pipes, devices, and devices used for exhaust pipes are mostly exposed to the outside air, which makes it difficult to prevent heat loss of the exhaust pipes. Accordingly, in the case of commercial vehicles, in order to compensate for this problem, heat loss of the exhaust pipe is prevented by wrapping the exhaust pipe with a separate insulation.

Conventionally, glass fiber is used as a heat insulating material for heat insulation and heat insulation of the exhaust pipe of a commercial vehicle. Glass fiber has excellent heat resistance, fire resistance, corrosion resistance, electrical insulation, and can be used without difficulty in high temperature valves or pipes, but has a disadvantage in that it is brittle because of poor durability and harmful dust generated at this time.

As a method for reinforcing the disadvantages of the glass fiber, the glass fiber workpiece is embedded and the outer surface of the glass fiber workpiece is reinforced with aluminum foil or coated cardboard, and the heat insulating material processed in this way is used as the heat insulating material of the exhaust pipe. However, despite these efforts, it was difficult to install and use a heat insulating material made of glass fiber in the exhaust pipe. For example, if the insulation is to be separated from the exhaust pipe for the maintenance of the exhaust pipe, when the insulation is dismantled from the exhaust pipe, it is difficult to reuse because it is easily broken due to the weak durability of the glass fiber mentioned above, so it is necessary to replace it with a new insulation. There was. In this case, the consumption cost of the thermal insulation material is increased, and a large amount of glass fiber waste is generated, which leads to a problem of environmental pollution.

In addition, the conventional thermal insulation material has a problem that the efficiency of insulation and insulation is not high because most of the material for the insulation and insulation is filled with only 90% or more glass fiber.

Therefore, the present inventors recognize such a conventional problem, and after the study, by introducing the following configuration, it is possible to effectively insulate and insulate the exhaust pipe to increase the efficiency of the harmful exhaust gas emission reduction device, and to insulate and insulate the exhaust pipe It has led to the development of a heat insulation cover for an exhaust pipe of a commercial vehicle, which has an increased effect and a long service life.

The present invention is a heat insulation cover for a commercial vehicle exhaust pipe is covered on the outer surface of the commercial vehicle exhaust pipe to prevent heat loss of the exhaust pipe, the first surface and the first surface in contact with the outer surface of the exhaust pipe when the heat insulation cover is covered on the outer surface of the exhaust pipe A cover portion in the form of a sheet including a second surface which is a rear surface of the surface; A heat insulating material layer formed on the first surface and covering the outer surface of the exhaust pipe together with the cover part to insulate and insulate the exhaust pipe; Located at the top of the insulation layer and the edge is fixed to the first surface in a state covering the insulation layer, and the cover portion and the insulation layer includes a metal net for maintaining the bent shape when the insulation layer is bent It provides a heat insulation cover for a commercial vehicle exhaust pipe characterized in that.

The insulation layer is a first fabric layer, sequentially stacked from the first surface; A first felt layer; Thermal insulation layer; Second felt layer; A second fabric layer, wherein the fabric layer, the felt layer, the thermal insulation layer is made of any one of glass fiber, mineral fiber, basalt fiber, ceramic fiber felt, the fabric layer is a fiber containing carbon yarn strands It is a woven fabric of four strands, characterized in that the cover portion is made of any one of a silicon coated fabric or a woven fabric of aramid strands.

The insulation layer is further laminated between the metal net and the second fabric layer further comprises a cover layer for preventing the inflow of foreign matter into the insulation layer.

The present invention includes a binding means for fixing the heat insulating cover wrapped around the exhaust pipe of a commercial vehicle. For example, the binding means may include binding rings fixed to the second surface of the cover part; And hook mechanisms coupled between binding rings adjacent to each other in the circumferential direction of the commercial vehicle exhaust pipe.

The cover portion further includes a binding wire provided at ends parallel to the circumferential direction of the commercial vehicle exhaust pipe when the cover portion is wrapped in the commercial vehicle exhaust pipe. The binding wire is fixed to the circumference of the commercial vehicle exhaust pipe such that ends parallel to the circumferential direction of the commercial vehicle exhaust pipe are not spaced apart from the outer surface of the commercial vehicle exhaust pipe.

1 is a perspective view showing the appearance of a heat insulation cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention.
2 is a cross-sectional view of the insulation cover for the commercial vehicle exhaust pipe shown in FIG.
Figure 3 is a perspective view showing a cover portion of the heat insulation cover for a commercial vehicle exhaust pipe shown in FIG.
4 is a schematic cross-sectional view showing a state in which a heat insulation cover for a commercial vehicle exhaust pipe shown in FIG. 1 is installed in an exhaust pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail the heat insulating cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

In the present specification, the fabric layers, the felt layers, and the insulation layer are each made of any one of glass fiber, mineral fiber, basalt fiber, and ceramic fiber felt, unless otherwise specified.

1 is a perspective view showing the appearance of a heat insulation cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention.

Referring to Figure 1, the heat insulation cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention cover portion 110; The insulation layer 120 and the metal net 140 is included.

The cover part 110 is a protective layer for protecting the thermal insulation layer 120 from the outside. The cover 110 is wrapped on the outer surface of the exhaust pipe 10 of the commercial vehicle together with the insulation layer 120. At this time, the surface which contacts the outer surface of the exhaust pipe 10 is a 1st surface, and the back surface of the 1st surface is a 2nd surface. The cover 110 may be in the form of a rectangular sheet having a predetermined width and length so as to surround the outer surface of the exhaust pipe 10. For example, the length of the cover portion 110 may have a length corresponding to the length of the exhaust pipe 10 so as to cover the entire outer surface of the exhaust pipe 10, may cover only a portion of the outer surface of the exhaust pipe 10 It may have a length. The width of the cover 110 may have a length corresponding to the diameter of the exhaust pipe 10 or have a longer length.

The cover part 110 is preferably made of a material having excellent heat resistance and mechanical strength in order to effectively protect the thermal insulation layer 120 from the outside. To this end, the material of the cover 110, for example, it is preferable to use a fabric coated with a silicon coated fabric or aramid fiber strands. Silicone is known as a resin having excellent heat resistance and mechanical strength, and when the silicone is coated on a general fabric, the silicone coated fabric can be given excellent heat resistance and mechanical strength. Aramid fibers are aromatic polyamide fibers, and are known as fibers having excellent heat resistance and mechanical strength. When the aramid fibers are woven to produce a fabric, a fabric having high heat resistance and high mechanical strength may be produced. Therefore, using a silicon coated fabric or a woven fabric of aramid fiber strands as the cover portion 110 may be very useful for effectively protecting the insulation layer 120 from the outside.

Additionally, the cover part 110 may be in the form of a silicone coating on the surface of the fabric woven with aramid fiber strands. In this case, the heat resistance and mechanical strength of the cover 110 may be more excellent, and the thermal insulation layer 120 may be more effectively protected.

2 is a cross-sectional view of the insulation cover for the commercial vehicle exhaust pipe shown in FIG.

The heat insulating material layer 120 is configured on the first surface of the cover part 110 and covers the outer surface of the exhaust pipe 10 together with the cover part 110 to insulate and insulate the exhaust pipe 10. Referring to FIG. 2, the heat insulating material layer 120 may include a first fabric layer 121 to insulate and insulate the exhaust pipe 10; First felt layer 122; Thermal insulation layer 123; Second felt layer 124; Second fabric layer 125 is included. These configurations are sequentially stacked from the first surface of the cover portion 110 in which the insulation layer 120 is located.

The first fabric layer 121 is a fabric layer made of a fabric formed by weaving fiber yarn strands. The fiber yarn strands are embedded with carbon yarn strands. Therefore, the first fabric layer 121 has a carbon fiber characteristic. Carbon fiber is known as a fiber having excellent mechanical properties such as high strength and high rigidity made of graphite carbon and excellent heat resistance. Due to the characteristics of such carbon fibers, carbon fibers are widely used as a material for heat insulating materials. Therefore, the first fabric layer 121 is a heat insulating layer excellent in mechanical properties and heat resistance, and capable of heat insulation.

In addition, the first fabric layer 121 may be a fiber material of the various fiber strands. For example, it may be any one of glass fiber, mineral fiber and basalt fiber, and ceramic fiber felt. Glass fibers, mineral fibers and basalt fibers, and ceramic fiber felt are all excellent in heat resistance, and when such fibers are used as the fiber yarns of the first fabric layer 121, the heat insulation and thermal insulation of the first fabric layer 121 may be improved. Can be.

The first felt layer 122 is a layer formed in a felt form. For example, the first felt layer 122 may be made of any one of glass fiber, mineral fiber, basalt fiber, and ceramic fiber felt. These fibers have excellent insulation, heat resistance and durability. Forming these fibers in felt form can be used as a heat insulator and can mitigate impact from the outside. Therefore, the first felt layer 122 is an additional heat insulating layer, it may be a layer for mitigating the impact from the outside.

The heat insulating layer 123 is a layer for keeping warm. Insulating layer 123 is, for example, molded in the form of a mat (mat) or board (board), it may be made of any one of glass fiber, mineral fiber, basalt fiber, ceramic fiber felt.

The second felt layer 124 is the same as the first felt layer 122, and the second felt layer 124 is also an additional thermal insulation layer.

The second fabric layer 125 is the same as the first fabric layer 121, and the second fabric layer 125 is also an additional thermal insulation layer.

The heat insulating material layer 120 may have excellent properties of heat insulation and heat insulation because each layer is composed of materials having excellent heat insulation and heat retention.

Meanwhile, the heat insulating material layer 120 is formed in the cover part 110 and is attached to the first surface of the cover part 110 in a width and length similar to the width and length of the cover part 110. In this case, the overlapping part 111 is formed in the cover part 110, and the heat insulating material layer 120 forms the cover part for forming the overlapping part 111 in the cover part 110 to form the overlapping part 111. 110) It is attached to the remaining area of the first surface except for a partial area of the first surface.

The overlapping part 111 is one side of the cover part 110 extending from the end of the heat insulating material layer 120 when viewed in the perspective view of FIG. 1. This overlapping part 111 is overlapped with the second surface of the cover part 110 when the heat insulation cover is covered on the outer surface of the exhaust pipe 10 so that the other part of the cover part 110 located on the opposite side of the overlapping part 111. Cover one side. By the overlapping portion 111, heat on the exhaust pipe 10 may be blocked from being discharged to the outside, and foreign substances from the outside may be blocked from flowing into the heat insulating cover.

The metal net 140 is arranged while crossing a plurality of thin metal wires in a direction perpendicular to each other, for example, to form a net structure in the form of a checkerboard. The metal net 140 is positioned above the thermal insulation material layer 120 to cover the thermal insulation material layer 120, and the edge of the metal net 140 is fixed to the first surface of the cover part 110. For fixing the metal net 140, for example, folded surfaces 112 may be formed at edges of the first surface of the cover 110. The folded surfaces 112 refer to surfaces in which ends of the cover portion 110 are folded toward the first surface of the cover portion 110. In this case, the edge of the metal net 140 is positioned between the first surface of the cover portion 110 and the folded surfaces 112 and the folded surfaces 112 are fixed to the first surface of the cover portion 110. In other words, the edge of the metal net 140 may be fixed between the folded surfaces 112 and the first surface of the cover portion 110 corresponding thereto.

When the metal net 140 is configured on the first surface of the cover 110, the bent shape may be maintained when the heat insulating cover is bent. Therefore, the curved shape can be maintained in the process of bending the cylindrical cover to cover the exhaust pipe 10 so that the process of fixing the thermal insulation cover to the outer surface of the exhaust pipe 10 can be facilitated.

Figure 3 is a perspective view showing a cover portion of the heat insulation cover for a commercial vehicle exhaust pipe shown in FIG. The face of the cover part shown in FIG. 3 is a second face.

Referring to FIG. 3, a heat insulation cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention includes a binding means 130 for fixing the heat insulation cover while surrounding the circumference of the exhaust pipe 10 of the commercial vehicle. For example, the binding means 130 may include binding rings 131 and hook holes 132.

The binding rings 131 may be fixed to the second surface of the cover part 110, and may be located in an area adjacent to the overlapping part 111 and in an area located opposite to the overlapping part 111 at each other. It forms a symmetrical structure and may be arranged at regular intervals in a direction parallel to the overlapping portion 111. These binding rings 131 has a configuration in which the hook 132 can be coupled. For example, the binding rings 131 may include a fixing part 131a fixed to the cover part 110 and a ring part 131b protruding in a bent form from the fixing part 131a. . Hook 132 is coupled to the ring portion (131b). The binding rings 131 may be made of metal, for example, stainless steel.

Hook spheres 132 is coupled to the ring portion 131b, for example, 'U' shaped hook portion 132a that can be coupled to the ring portion 131b has a continuous shape in a zigzag form It may be in the form of a wire. The hook portion 132a is coupled to the ring portion 131b. As another example, although not shown, the hooks may be in the form of a wire spring having hook portions at both ends. The hook portion is coupled to the ring portion of the binding rings. As another example, it may be in the form of a linear wire rather than a zigzag shape. In the case of the linear wire, the linear wire may be wound around the ring portions 131b of the binding rings 131 adjacent to each other and coupled to the binding rings 131. The hook 132 may be coupled to the binding rings 131 adjacent to each other in the circumferential direction of the exhaust pipe 10 in a state where the heat insulation cover is covered around the outer surface of the exhaust pipe 10. Hanging tool 132 may be a metal material, for example, may be a stainless material.

As described above, when the binding means 130 is formed of the binding rings 131 and the hook holes 132, the binding ring when the insulation layer 120 covers the outer surface of the exhaust pipe 10 is covered with the exhaust pipe 10. The fields 131 are adjacent to each other in the circumferential direction of the exhaust pipe 10, and when the hook holes 132 are coupled to the binding rings 131 which are adjacent to each other in the circumferential direction, the insulation cover is simply an exhaust pipe 10. It is fixed around the perimeter. Therefore, the process of fixing the insulating cover after covering the exhaust pipe 10 may be simple and quick.

The form of the binding means 130 is not particularly limited to the configuration of the binding rings 131 and the hook 132, it is also possible in various other forms. For example, it may be in the form of a male or a male buckle, or may be in the form of a female or a male velcro tape.

On the other hand, the heat insulation cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention further includes a binding wire 150 for the purpose of easily fixing the heat insulation cover to the exhaust pipe (10). The binding wire 150 is shown well in FIG. 1.

The binding wire 150 is provided at ends of the cover part 110 perpendicular to the overlapping part 111. For example, the above-described folded surfaces 112 may be used to install the binding wire 150 in the cover 110. In this case, it is preferable that the folding surfaces 112 have a space in which the binding wire 150 can be inserted. To this end, for example, when the folded surfaces 112 positioned perpendicular to the overlapping portion 111 of the folded surfaces 112 are fixed to the first surface of the cover portion 110, When only a part of the area is fixed to the first surface of the cover 110, a space 113 in which the binding wire 150 may be positioned may be provided inside the folded surfaces 112. When the binding wire 150 is inserted into the space 113, the binding wire 150 may be installed in the cover 110.

As described above, when the binding wire 150 installed on the cover 110 is fixed to the circumference of the exhaust pipe 10, the binding wire 150 is surrounded by the circumference of the exhaust pipe 10, and then both ends of the binding wire 150 are tied together. Fix it. In this way, end portions parallel to the circumferential direction of the exhaust pipe 10 in which the binding wire 150 is positioned are completely in close contact with the outer surface of the exhaust pipe 10 and are not spaced apart from the outer surface of the exhaust pipe 10. In this case, the heat on the exhaust pipe 10 is prevented from being discharged to the outside between the end portions parallel to the circumferential direction of the exhaust pipe 10 and the outer surface of the exhaust pipe 10 while the heat insulation cover is fixed to the exhaust pipe 10. Influx of foreign substances from the outside can be blocked.

On the other hand, the insulation layer 120 of the heat insulating cover for commercial vehicle exhaust pipe according to an embodiment of the present invention further includes a cover layer 126. Cover layer 126 is shown in FIG. 2.

The cover layer 126 is stacked on the upper surface of the heat insulating material layer 120, that is, the second fabric layer 125 positioned on the top of the heat insulating material layer 120 to cover the heat insulating material layer 120. And between the metal net 140. For example, the cover layer 126 may be a ceramic fabric cloth, but is not particularly limited thereto.

Since the cover layer 126 covers the heat insulating material layer 120 as a part which directly contacts the outer surface of the exhaust pipe 10 when the heat insulation cover is fixed to the outer surface of the exhaust pipe 10, the heat insulating material layer 120 is disposed on the exhaust pipe 10. There is no direct contact with the outer surface. Since the exhaust pipe 10 of the commercial vehicle is installed under the vehicle body, various foreign matters on the road are accumulated on the surface of the exhaust pipe 10, and rainwater on the road is buried on the surface of the exhaust pipe 10 by repetitive operation of the vehicle in rainy weather. Rough and harmful foreign matters are accumulated on the outer surface of the exhaust pipe 10 such as rust generated on the outer surface of the exhaust pipe 10. When the insulation cover is covered on the outer surface of the exhaust pipe 10, various foreign matters may flow into the thermal insulation layer 120, and the thermal insulation and thermal insulation efficiency of the thermal insulation layer 120 may decrease due to the foreign substances introduced therein. there is a problem. This problem is solved by the cover layer 126 covering the heat insulating material layer 120 as described above so that the heat insulating material layer 120 does not directly contact the outer surface of the exhaust pipe 10. Therefore, foreign matter accumulated on the outer surface of the exhaust pipe 10 is blocked by the cover layer 126 into the thermal insulation layer 120, thereby preventing the thermal insulation and the thermal insulation efficiency of the thermal insulation layer 120 from being lowered.

Hereinafter, a brief description of the process of installing the heat insulation cover for a commercial vehicle exhaust pipe according to an embodiment of the present invention on the exhaust pipe of a commercial vehicle. 4 is a schematic cross-sectional view showing a state in which a heat insulation cover for a commercial vehicle exhaust pipe shown in FIG. 1 is installed in an exhaust pipe.

First, the insulation cover is covered around the exhaust pipe so as to surround the outer surface of the exhaust pipe 10 of the commercial vehicle. At this time, the insulating cover is bent in a cylindrical shape to surround the outer surface of the exhaust pipe 10, the cover layer 126 is in contact with the outer surface of the exhaust pipe (10). In this state, the overlapping part 111 is overlapped with the end side of the second surface of the cover part 110 located on the opposite side of the overlapping part 111. This is illustrated well in FIG. 4.

Next, the hook 132 is coupled to the binding rings 131 adjacent to each other in the circumferential direction of the exhaust pipe 10 to fix the heat insulation cover on the exhaust pipe 10.

Finally, by pulling both ends of the binding wire 150 provided at the ends parallel to the circumferential direction of the exhaust pipe 10 so that the binding wire 150 is tightly wrapped around the exhaust pipe 10, the binding wire 150 Fix both ends of each other).

As described above, the insulation layer 120 in the state in which the insulation cover is installed on the outer surface of the exhaust pipe 10 allows the exhaust pipe 10 to be insulated and insulated, and the inside of the insulation cover is provided through the overlapping portion 111 and the binding wire 150. Since the air is completely sealed, heat on the exhaust pipe 10 is not discharged to the outside, and external foreign matters also do not flow into the heat insulating cover.

When using the heat insulation cover for the exhaust pipe of a commercial vehicle according to an embodiment of the present invention, the heat insulating material layer 120 is laminated with a plurality of layers made of a material that can insulate and heat insulation, the effective heat insulation and insulation of the exhaust pipe 10 This is possible. As the effective insulation and insulation of the exhaust pipe 10 is made, the efficiency of the harmful exhaust gas emission reduction device connected to the exhaust pipe 10 may be increased.

Since the inside of the heat insulation cover is completely sealed from the outside, the heat insulation and thermal insulation effect can be further increased. In addition, the heat insulation material layer 120 is protected from the foreign matter accumulated on the outer surface of the exhaust pipe 10 by the cover layer 126. As a result, the performance degradation of the insulation layer 120 is prevented, so that the service life of the insulation cover may be long.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

Claims (5)

As a heat insulation cover for a commercial vehicle exhaust pipe to cover the outer surface of the commercial vehicle exhaust pipe to prevent heat loss of the exhaust pipe,
A cover part including a first surface contacting the outer surface of the exhaust pipe and a second surface that is a rear surface of the first surface when the heat insulation cover is covered on the outer surface of the exhaust pipe;
A heat insulating material layer formed on the first surface and covering the outer surface of the exhaust pipe together with the cover part to insulate and insulate the exhaust pipe;
A metal net positioned at an upper portion of the heat insulating material layer and having an edge fixed to the first surface in a state of covering the heat insulating material layer, and maintaining the bent shape when the cover part and the heat insulating material layer are bent; And
The insulating cover includes a binding means for fixing while surrounding the exhaust pipe circumference of the commercial vehicle,
The binding means
Binding rings including a fixing part fixed to the second surface and a ring part protruding in a bent form from the fixing part; And
'U' shaped hook portion includes wire-shaped hooks having a continuous shape in a zigzag shape,
When the insulation cover is covered on the exhaust pipe, the binding rings are adjacent to each other in the circumferential direction of the exhaust pipe, and the hook holes are fixed to the binding rings by inserting the hook portion into the ring portions of the adjacent binding rings. To secure the form covered with the exhaust pipe,
Insulation cover for exhaust pipe of commercial vehicle. The method of claim 1,
The insulation layer is sequentially stacked from the first surface,
A first fabric layer; A first felt layer; Thermal insulation layer; Second felt layer; A second fabric layer,
The fabric layers, felt layers, thermal insulation layer is made of any one of glass fiber, mineral fiber, basalt fiber, ceramic fiber felt,
The fabric layers are fabrics woven from fiber yarn strands embedded with carbon yarn strands,
The cover part is characterized in that made of any one of a silicon coated fabric or a fabric woven with aramid strands,
Insulation cover for exhaust pipe of commercial vehicle. 3. The method according to claim 1 or 2,
The insulation layer is laminated between the metal net and the second fabric layer further comprises a cover layer for preventing the inflow of foreign matter into the insulation layer,
Insulation cover for exhaust pipe of commercial vehicle. delete The method of claim 1,
The cover portion further includes a binding wire provided at the ends parallel to the circumferential direction of the commercial vehicle exhaust pipe when the cover portion is wrapped in the commercial vehicle exhaust pipe,
The binding wire is fixed to the circumference of the commercial vehicle exhaust pipe so that the end portions parallel to the circumferential direction of the commercial vehicle exhaust pipe are not spaced apart from the outer surface of the commercial vehicle exhaust pipe.
Insulation cover for exhaust pipe of commercial vehicle.

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