CN219119339U

CN219119339U - Automobile anti-discoloration heat-insulation muffler

Info

Publication number: CN219119339U
Application number: CN202223543267.4U
Authority: CN
Inventors: 林维竞; 陶德芝; 聂凤君
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-02
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses an automobile anti-discoloration heat-insulation muffler, which comprises a shell and an exhaust pipe; the inside of the shell is partitioned into a silencing cavity and a main air inlet cavity through a partition plate; one end of the exhaust pipe, which is used for exhausting, is inserted into a main air inlet cavity in the shell, and a heat insulation layer attached to the shell and the partition board is arranged in the main air inlet cavity. The utility model has the positive effects that: the stainless steel heat insulation layer is arranged in the main air inlet cavity of the exhaust pipe exhaust, a double-layer stainless steel material is not used on the shell of the whole muffler, the whole mass of the muffler is relatively reduced, the muffler is easy to install on the exhaust pipe of the exhaust pipe, the manufacturing requirement of the exhaust pipe is not increased, and the cost is saved; the problems that the noise reduction effect of the muffler is weakened and the noise reduction requirement cannot be met due to the fact that the tail gas is scattered by the single heat shield during installation, and meanwhile, turbulent flow and turbulence occur in the main air inlet cavity are avoided.

Description

Automobile anti-discoloration heat-insulation muffler

Technical Field

The utility model belongs to the technical field of automobile exhaust gas exhaust and noise elimination, and particularly relates to an automobile anti-discoloration heat-insulation muffler.

Background

As a common transportation means for people to travel, various noises usually occur in the driving process, and the noises are mainly medium-frequency and low-frequency noises generated during exhaust; a muffler is generally arranged on an exhaust pipe of the tail gas, and a plurality of separated compartments for silencing are arranged in a shell of the muffler to eliminate medium and low frequency noise generated during exhaust.

The arrangement of the muffler is that the tail gas from the exhaust pipe is discharged in the tail cavity (namely the main air inlet cavity) so that the tail gas generated by the engine directly acts on the muffler shell outside the tail cavity, and the muffler shell is continuously heated by the high-temperature gas flow of the tail gas, so that the stainless steel material of the muffler is subjected to high-temperature oxidation and color change to influence the appearance of the whole vehicle, and the service life of the oxidized stainless steel material is reduced. In the prior art, the above problems are generally solved by the following two ways:

(1) The muffler shell is made of double-layer stainless steel, so that the bearing capacity of the shell under high temperature is improved, the oxidation degree is reduced, the influence on the appearance of the whole vehicle is reduced, and the service life of the muffler is prolonged; however, the double-layer stainless steel material leads to heavier overall mass of the muffler, is not easy to be installed on the tail gas exhaust pipe, has certain requirements on the manufacturing strength of the tail gas exhaust pipe, and increases the use cost.

(2) A single heat shield is arranged at the tail gas outlet of the exhaust pipe in the main air inlet cavity, a plurality of holes are formed in the shield, the exhausted tail gas is scattered, and flows and escapes to the periphery, so that the heat applied to the unit area of the shell is reduced, the oxidation degree of the shell and the influence on the appearance of the whole automobile are reduced, and the service life of the silencer is prolonged; however, when the single heat shield installed in the main air inlet cavity breaks up tail gas, turbulence and turbulence are easy to occur in the main air inlet cavity, abnormal sound is generated, the silencing effect of the silencer is weakened, and the noise reduction requirement cannot be met.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides the anti-discoloration heat-insulation muffler for the automobile. According to the utility model, the stainless steel heat insulation layer is arranged in the main air inlet cavity, so that the overall quality of the muffler is reduced, the manufacturing requirement of the exhaust pipe is not increased, and the cost is saved.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an automobile anti-discoloration heat-insulation muffler comprises a shell and an exhaust pipe; the inside of the shell is partitioned into a silencing cavity and a main air inlet cavity through a partition plate; one end of the exhaust pipe, which is used for exhausting, is inserted into a main air inlet cavity in the shell, and a heat insulation layer attached to the shell and the partition board is arranged in the main air inlet cavity.

Preferably, the heat insulation layer is a stainless steel coating.

Preferably, a plurality of heat dissipation plates are paved on the heat insulation layer positioned at the bottom side of the main air inlet cavity.

Preferably, the heat receiving body is arranged on the heat radiating plate.

Preferably, the upper part of the heated body is provided with an air guide inclined plane.

Preferably, the side with the high air guide inclined plane is positioned right below the exhaust pipe in the main air inlet cavity.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) The stainless steel heat insulation layer is arranged in the main air inlet cavity of the exhaust pipe, double-layer stainless steel materials are not used on the shell of the whole muffler, the whole mass of the muffler is relatively reduced, the muffler is easy to install on the exhaust pipe of tail gas, the manufacturing requirement of the exhaust pipe is not increased, and the cost is saved.

(2) The problems that the noise reduction effect of the muffler is weakened and the noise reduction requirement cannot be met due to the fact that the tail gas is scattered by the single heat shield during installation, and meanwhile, turbulent flow and turbulence occur in the main air inlet cavity are avoided.

(3) The heating panel is with the even insulating layer that passes to whole stainless steel of blast pipe exhaust tail gas, passes to whole casing again for the casing is heated as far as possible evenly, reduces the oxidation effect.

(4) Exhaust pipe exhaust tail gas blows to the air guide inclined plane of the heat receiver, and the air guide inclined plane guides the tail gas from the high side to the low side, and the tail gas gradually diffuses to the heat dissipation plate, so that the tail gas is prevented from directly blowing to a certain area on the shell, and further heat of the tail gas is uniformly transferred to the heat insulation layer through the heat dissipation plate, and oxidation of the shell is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic perspective view of a heat dissipating plate and a heat sink according to the present utility model.

Reference numerals illustrate:

1-a shell, 11-a partition board, 12-a silencing cavity and 13-a main air inlet cavity;

2-an exhaust pipe;

3-a heat insulation layer;

4-a heat dissipation plate;

5-heating element, 51-air guiding inclined plane.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Examples

An anti-discoloration and heat-insulation muffler for an automobile according to an embodiment will be described with reference to fig. 1 and 2, and as shown in fig. 1 and 2, the muffler includes a housing 1 and an exhaust pipe 2; the interior of the shell 1 is partitioned by a partition plate 11 into a silencing cavity 12 and a main air inlet cavity 13; one end of the exhaust pipe 2, which is used for exhausting, is inserted into a main air inlet cavity 13 in the shell 1, and a heat insulation layer 3 attached to the shell 1 and the partition plate 11 is arranged in the main air inlet cavity 13. The heat insulation layer 3 is a stainless steel coating.

The heat insulation layer 3 of stainless steel is only arranged in the main air inlet cavity 13 of the exhaust pipe 2 for exhausting, double-layer stainless steel materials are not used on the shell of the whole muffler, the whole mass of the muffler is relatively lightened, the muffler is easy to install on the exhaust pipe 2 of tail gas, the manufacturing requirement of the exhaust pipe 2 is not increased, and the cost is saved. Meanwhile, the problems that the noise reduction effect of the muffler is weakened and the noise reduction requirement cannot be met due to the fact that turbulence and turbulence occur in the main air inlet cavity while the tail gas is scattered by the single heat shield are avoided.

As shown in fig. 1 and 2, a plurality of heat dissipation plates 4 are laid on the heat insulation layer 3 located at the bottom side of the main air intake chamber 13. The heat of the tail gas exhausted by the exhaust pipe 2 is uniformly transferred to the whole stainless steel heat insulation layer 3 and then transferred to the whole shell 1, so that the shell 1 is heated uniformly as much as possible, and the oxidation effect is reduced.

As shown in fig. 1 and 2, the heat sink 4 is provided with a heat receiving body 5, the upper part of the heat receiving body 5 is provided with an air guide inclined plane 51, and the side of the air guide inclined plane 51 is positioned right below the exhaust pipe 2 in the main air inlet cavity 13.

Exhaust gas discharged by the exhaust pipe 2 is blown onto the air guide inclined surface 51 of the heat receiving body 5, the air guide inclined surface 51 guides the exhaust gas from a high side to a low side, the exhaust gas is gradually diffused onto the heat radiation plate 4, direct blowing of the exhaust gas to a certain area on the shell 1 is avoided, heat of the exhaust gas is further uniformly transmitted to the heat insulation layer 3 through the heat radiation plate 4, and oxidation of the shell 1 is reduced.

In the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", etc. refer to the orientation or positional relationship based on that shown in the drawings, and are merely for the purpose of describing the present utility model and do not require that the present utility model must be constructed or operated in a specific orientation, and thus should not be construed as limiting the present utility model. "connected" and "connected" in the present utility model are to be understood broadly, and may be, for example, connected or detachably connected; the connection may be direct or indirect through intermediate members, and the specific meaning of the terms may be understood in detail by those skilled in the art.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification and equivalent changes to the above-mentioned embodiments according to the technical substance of the present utility model are still within the protection scope of the technical solution of the present utility model.

Claims

1. An automobile anti-discoloration heat-insulation muffler comprises a shell (1) and an exhaust pipe (2); the inside of the shell (1) is partitioned by a partition plate (11) into a silencing cavity (12) and a main air inlet cavity (13); the exhaust pipe is characterized in that a heat insulation layer (3) attached to the shell (1) and the partition plate (11) is arranged in the main air inlet cavity (13).

2. An automotive anti-discoloration heat-insulating muffler according to claim 1, characterized in that the heat-insulating layer (3) is a stainless steel coating.

3. The anti-discoloration heat-insulation muffler for an automobile according to claim 1, wherein a plurality of heat dissipation plates (4) are paved on the heat insulation layer (3) positioned at the bottom side of the main air inlet cavity (13).

4. A vehicle anti-discoloration heat-insulation muffler according to claim 3, characterized in that the heat-receiving body (5) is provided on the heat-radiating plate (4).

5. The anti-discoloration heat-insulation muffler for an automobile according to claim 4, wherein the upper part of the heated body (5) is provided with an air guide inclined plane (51).

6. The anti-discoloration heat-insulation muffler for an automobile according to claim 5, wherein the high side of the air guiding inclined surface (51) is positioned right below the exhaust pipe (2) in the main air inlet cavity (13).