CN217380690U - Heat insulation and noise reduction device of engine and vehicle - Google Patents

Abstract

The utility model provides a heat insulation and noise reduction device of an engine, which relates to the field of heat insulation and noise reduction equipment of the engine and comprises a metal box body of an air dispersing device and metal tail pipes with openings at two ends, wherein one opening is matched inside the metal box body, and the other opening is arranged outside the metal box body; the metal box body comprises a metal shell, a glass fiber layer arranged on the inner side of the metal shell and a packaging layer wrapping the glass fiber layer. Tail gas enters the box body through the tail pipe, and the energy of the sound wave of the tail gas can generate friction with the fine cavity formed by the glass fiber and is absorbed in a large amount; the glass fiber has countless air pockets with different sizes, so that the thermal conductivity is low, the heat of tail gas in the device can be effectively isolated, and the problems that the tail gas after being treated by the exhaust post-processor is directly discharged out of the cabin through the tail pipe or the exhaust diverter serving as a channel, and the tail gas is high in peripheral temperature and high in tail gas noise caused by special treatment are solved. The present application further provides a vehicle.

Description

Heat insulation and noise reduction device of engine and vehicle

Technical Field

The utility model relates to an equipment technical field of making an uproar separates heat, falls of engine particularly, relates to a device and vehicle of making an uproar fall in heat-proof and of engine.

Background

With the development of society, people have higher and higher requirements on environmental protection. Exhaust treatment of tail gas is also receiving more and more attention, most of the tail gas treated by the existing exhaust post-processor is directly exhausted out of the cabin through an exhaust tail pipe or an exhaust diverter, and various other devices such as tail lamps, side walls and various wire harnesses are often arranged at the periphery of the position where the tail gas is located, and the devices and the wire harnesses are easily affected by high temperature generated by the tail gas, so that related devices are baked, and even safety problems are caused; moreover, tail gas directly discharges, and the noise that it had is often very big, can bring not good experience effect for the user.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a device of making an uproar falls in thermal-insulated and aims at improving current tail gas treatment scheme and pass through tail pipe or exhaust shunt as the passageway with tail gas direct discharge extravehicular for the tail gas after will exhaust after-treatment ware handles, and does not have the problem that special treatment leads to tail row peripheral temperature height, tail gas noise big from this.

The utility model adopts the following scheme:

a heat insulation and noise reduction device of an engine comprises a metal box body with the bottom suitable for an air dispersing device, and a metal tail pipe with openings at two ends, wherein the metal tail pipe is inserted into one side of the metal box body, one opening is positioned in the metal box body, and the other opening is positioned outside the metal box body and is used for being connected with an exhaust aftertreatment device; the metal box body comprises a metal shell, a glass fiber layer and a packaging layer, wherein the glass fiber layer is matched with the inner side of the metal shell, and the packaging layer is matched with the inner side of the metal shell and wraps the glass fiber layer.

As a further improvement, the air diffusing device is a porous grid air diffusing device.

As a further improvement, the glass fiber layer is made of glass fiber needled felt materials.

As a further improvement, the packaging layer is made of aluminum foil.

As a further improvement, the part of the metal tail pipe in the metal box body comprises a metal shell, glass fiber needled felts uniformly distributed on the inner side of the metal shell and aluminum foils which are matched on the inner side of the metal shell and wrap the glass fiber needled felts.

As a further improvement, the part of the metal tail pipe in the metal box body is arc-shaped.

As a further improvement, the metal shell of the metal box body is fixed by welding.

A vehicle comprises a heat insulation and noise reduction device of an engine, the engine and an exhaust gas post-processor which are arranged in the vehicle, wherein the engine is in adaptive connection with the exhaust gas post-processor, and an outlet of the exhaust gas post-processor is in adaptive connection with the heat insulation and noise reduction device of the engine; the heat insulation and noise reduction device of the engine is any one of the heat insulation and noise reduction devices of the engine.

By adopting the technical scheme, the utility model discloses can gain following technological effect:

according to the heat insulation and noise reduction device of the engine, a metal tail pipe is inserted into one side of a metal box body, one opening of the metal tail pipe is located inside the metal box body, and the other opening of the metal tail pipe is located outside the metal box body; the metal box body comprises a metal shell, a glass fiber layer and a packaging layer, wherein the glass fiber layer is matched with the inner side of the metal shell, and the packaging layer wraps the glass fiber layer; the tail gas enters the box body through the tail pipe, and the energy of the sound wave of the tail gas can generate friction with the fine holes formed by the glass fibers and is absorbed in a large amount; and because the glass fiber has countless air pockets with different sizes, the thermal conductivity is small, the heat of the tail gas in the device can be effectively isolated, and the problems of high temperature around the tail gas and high tail gas noise caused by special treatment of the tail gas in the existing tail gas treatment scheme that the tail gas treated by the exhaust post-processor is directly discharged out of the cabin through the tail pipe or the exhaust flow divider serving as a channel are solved. The advantages of the present application are apparent compared to the prior art.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of the overall structure of a first embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the first embodiment of the present invention;

fig. 3 is a cross-sectional view of a first embodiment of the present invention at one of the viewing angles;

fig. 4 is a cross-sectional view of the first embodiment of the present invention from another perspective.

Detailed Description

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The first embodiment of the utility model provides a heat insulation and noise reduction device of engine, including the metal box 5 that the bottom is adapted with the gas dispersing device, and both ends open-ended metal tail pipe 1, metal tail pipe 1 pegs graft with metal box 5 one side, and one of them opening is located metal box 5 inside, and another opening is located metal box 5 outside, is used for connecting the exhaust aftertreatment ware; so that the tail gas discharged by the exhaust gas post-processor can enter the metal box body 5 through the metal tail pipe 1 to carry out heat insulation and noise reduction treatment on the tail gas.

In this embodiment, the metal box 5 and the metal tail pipe 1 each include a metal shell, a glass fiber layer 3 fitted inside the metal shell, and an encapsulation layer 4 fitted inside the metal shell and wrapping the glass fiber layer 3. The metal shell of the metal box body 5 is welded and fixed, so that the metal box body 5 has good connection performance and large structural rigidity; the encapsulation layer 4 can effectively prevent the glass fiber from falling off in the device. The method specifically comprises the following steps: when tail gas airflow enters the metal box body 5 through the metal tail pipe 1, the size of the cross section is suddenly changed, and the phenomenon that an airflow boundary layer is separated from the pipe wall is generated, so that a vortex is formed inside, friction and collision can be generated among tail gas micro-clusters and the tail gas micro-clusters are continuously updated, and related mechanical energy is continuously consumed. Moreover, because the glass fiber layer 3 is adhered to the inner periphery of the metal box 5 and the outer part of the metal tail pipe 1, when the tail gas sound wave enters the glass fiber layer 3, the energy of the sound wave is rubbed with countless fine holes formed by the glass fiber, thereby absorbing a large amount of the sound wave. Finally, because the glass fiber has innumerable air pockets with different sizes, the thermal conductivity is small, the glass fiber is an excellent heat insulation material, the tail gas heat inside the device can be effectively isolated, and the system around the tail gas is prevented from being influenced by high temperature. The problems that the tail gas after being treated by the exhaust after-treatment device is directly discharged out of the cabin through the tail pipe or the exhaust diverter serving as a channel without special treatment, so that the peripheral temperature of the tail gas is high and the noise of the tail gas is high in the existing tail gas treatment scheme are solved.

Furthermore, the air diffusing device is a porous grid air diffusing device 2, so that the air in the metal box body 5 can be conveniently discharged, and meanwhile, the air diffusing device has strong resistance and is durable.

In this embodiment, the glass fiber layer 3 is made of glass fiber needle felt material, which has good sound absorption rate and heat insulation, so as to effectively reduce the heat of the exhaust gas, isolate the heat of the exhaust gas, and effectively reduce the noise of the exhaust gas.

Furthermore, the packaging layer 4 is made of aluminum foil, so that the glass fiber can be effectively prevented from falling off in the device, and the inside of the device is smooth and attractive.

In the present embodiment, the metal tail pipe 1 has an arc shape in the metal box 5, and the arc shape can transform the direction of the gas flow to consume part of the energy of the gas flow.

A second embodiment of the utility model provides a vehicle, including the engine insulate against heat and fall the device of making an uproar and install engine, the exhaust aftertreatment ware in the vehicle, the engine with exhaust aftertreatment ware adaptation connection, the exit adaptation connection of exhaust aftertreatment ware the device of making an uproar separates heat and falls of engine for exhaust aftertreatment ware exhaust tail gas can directly get into in the metal box 5, separates heat and fall the processing of making an uproar to it. The heat insulation and noise reduction device of the engine is any one of the heat insulation and noise reduction devices of the engine.

The specific using process is as follows: the user only needs assemble the thermal-insulated and noise reduction device of engine to the exit of exhaust aftertreatment ware, can realize vehicle exhaust's thermal-insulated and noise reduction, and the device structure easy operation facilitates the user and uses.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims (8)

1. The heat insulation and noise reduction device of the engine is characterized by comprising a metal box body and a metal tail pipe, wherein the bottom of the metal box body is provided with an air dispersing device, the two ends of the metal tail pipe are provided with openings, the metal tail pipe is inserted into one side of the metal box body, one opening is positioned in the metal box body, and the other opening is positioned outside the metal box body and is used for being connected with an exhaust post-processor; the metal box body comprises a metal shell, a glass fiber layer and an encapsulation layer, wherein the glass fiber layer is matched with the inner side of the metal shell, and the encapsulation layer is matched with the inner side of the metal shell and wraps the glass fiber layer.

2. The engine heat and noise insulation and reduction device according to claim 1, wherein said air diffusing means is a porous grid air diffusing means.

3. The engine heat and noise insulation and reduction device of claim 1, wherein said fiberglass layer is made of fiberglass needle felt material.

4. The engine heat and noise insulating and reducing device of claim 3, wherein said encapsulation layer is made of aluminum foil.

5. The heat and noise insulation and reduction device for the engine according to claim 4, wherein the metal tail pipe comprises a metal casing, a fiberglass needle felt uniformly distributed inside the metal casing, and an aluminum foil fitted inside the metal casing and wrapping the fiberglass needle felt.

6. The heat and noise insulation and reduction device for engine of claim 5, wherein the metal tail pipe is formed in the shape of arc in the metal case.

7. The engine heat and noise insulation device according to claim 1, wherein the metal case of the metal case is welded and fixed.

8. A vehicle comprises a heat insulation and noise reduction device of an engine, the engine and an exhaust gas post-processor which are arranged in the vehicle, wherein the engine is in adaptive connection with the exhaust gas post-processor, and an outlet of the exhaust gas post-processor is in adaptive connection with the heat insulation and noise reduction device of the engine; characterized in that the heat insulation and noise reduction device of the engine is the heat insulation and noise reduction device of the engine according to any one of claims 1 to 7.

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