CN215860419U

CN215860419U - Tail gas aftertreatment encapsulation subassembly

Info

Publication number: CN215860419U
Application number: CN202122495594.6U
Authority: CN
Inventors: 颜梦佳; 吴�琳; 王玲; 谢方; 潘粉华
Original assignee: Shanghai Tenneco Exhaust System Co Ltd
Current assignee: Shanghai Tenneco Exhaust System Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-02-18
Anticipated expiration: 2031-10-15

Abstract

The utility model provides a tail gas aftertreatment encapsulation subassembly, its include the inlet end awl, with casing, encapsulation that the inlet end awl links to each other are in first aftertreatment carrier, encapsulation in the casing second aftertreatment carrier in the casing and with the end awl of giving vent to anger that the casing links to each other, first aftertreatment carrier with second aftertreatment carrier is along airflow direction interval arrangement, first aftertreatment carrier is followed airflow direction is located the upper reaches of second aftertreatment carrier, tail gas aftertreatment encapsulation subassembly is still including being fixed in the blender in the inlet end awl, the blender includes the edge airflow direction court first aftertreatment carrier convex arc wall, evenly distributed has a plurality of air current distribution holes on the arc wall. When the airflow flows through the mixer, the airflow can be relatively uniformly distributed on the inlet end face of the first aftertreatment carrier, so that the exhaust gas purification effect is improved.

Description

Tail gas aftertreatment encapsulation subassembly

Technical Field

The utility model relates to a tail gas aftertreatment packaging assembly, and belongs to the technical field of engine tail gas aftertreatment.

Background

A conventional exhaust aftertreatment package assembly generally includes an inlet end cone, a housing coupled to the inlet end cone, a first aftertreatment carrier encapsulated within the housing, a second aftertreatment carrier encapsulated within the housing, and an outlet end cone coupled to the housing. When the airflow flows through the air inlet end cone, how to uniformly distribute the airflow to the inlet end face of the first aftertreatment carrier is important for improving the purification effect of the tail gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an exhaust aftertreatment packaging assembly with good airflow uniformity.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a tail gas aftertreatment encapsulation subassembly, its includes and is used for the tail gas aftertreatment encapsulation that links to each other with the manifold, tail gas aftertreatment encapsulation include with the inlet end awl that the manifold links to each other, with casing, encapsulation that the inlet end awl links to each other first aftertreatment carrier, encapsulation in the casing second aftertreatment carrier in the casing and with the end awl of giving vent to anger that the casing links to each other, first aftertreatment carrier with second aftertreatment carrier is along airflow direction interval arrangement, first aftertreatment carrier is followed airflow direction is located the upper reaches of second aftertreatment carrier, tail gas aftertreatment encapsulation subassembly is still including being fixed in the blender in the inlet end awl, the blender includes the edge airflow direction court the convex arc wall of first aftertreatment carrier, evenly distributed has a plurality of air currents on the arc wall.

As a further improved technical solution of the present invention, the manifold includes four tubes, and the four tubes converge into the inlet end cone.

As a further improved technical scheme of the utility model, the air inlet end cone comprises an arc-shaped inner wall surface, and the mixer comprises a circle of brim parts fixed on the inner wall surface.

As a further improved technical solution of the present invention, the arc-shaped wall is located inside the brim part, and the arc-shaped wall and the brim part are integrally formed.

As a further improved technical scheme of the utility model, the shape of the arc-shaped wall is in an irregular hemispherical shape.

As a further improved technical scheme of the utility model, the number of the plurality of air flow distribution holes is not less than 90.

As a further improved technical scheme of the utility model, the diameter of each air flow distribution hole is not less than 8 mm.

As a further improved technical scheme of the utility model, the first after-treatment carrier is a three-way catalyst carrier, and the second after-treatment carrier is a gasoline particulate filter carrier.

Compared with the prior art, the mixer provided by the utility model comprises an arc-shaped wall protruding towards the first aftertreatment carrier along the airflow direction, and a plurality of airflow distribution holes are uniformly distributed on the arc-shaped wall; when the airflow flows through the mixer, the airflow can be relatively uniformly distributed on the inlet end face of the first aftertreatment carrier, so that the exhaust gas purification effect is improved.

Drawings

Fig. 1 is a perspective view of an exhaust aftertreatment package assembly of the present invention in one embodiment.

Fig. 2 is a schematic sectional view taken along a-a in fig. 1.

Fig. 3 is a partially enlarged view of circled portion B in fig. 2.

Fig. 4 is a front view of the mixer of fig. 3.

Fig. 5 is a perspective view of fig. 4 from another angle.

Detailed Description

The following detailed description of the embodiments of the utility model will be described in conjunction with the accompanying drawings, in which, if there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, like numbers or symbols in different drawings represent the same or similar elements unless otherwise specified. The statements made in the following exemplary embodiments do not represent all embodiments of the present invention, but rather they are merely examples of products consistent with the present invention as recited in the claims of the present invention.

The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. It should be understood that the use of terms such as "first," "second," and the like, in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another.

Referring to fig. 1-5, an exhaust aftertreatment package assembly 100 is disclosed that includes an exhaust aftertreatment package 300 configured to be coupled to a manifold 200. The exhaust gas aftertreatment package 300 includes an inlet end cone 1 connected to the manifold 200, a housing 2 connected to the inlet end cone 1, a first aftertreatment carrier 31 encapsulated in the housing 2, a second aftertreatment carrier 32 encapsulated in the housing 2, and an outlet end cone 4 connected to the housing 2. In the illustrated embodiment of the utility model, the manifold 200 comprises four tubes 201, and the four tubes 201 merge into the inlet end cone 1.

The first aftertreatment carrier 31 and the second aftertreatment carrier 32 are arranged at a distance in the gas flow direction. The first aftertreatment carrier 31 is located upstream of the second aftertreatment carrier 32 in the gas flow direction.

The exhaust aftertreatment package assembly 300 further includes a mixer 5 secured in the inlet end cone 1. The mixer 5 comprises an arc-shaped wall 51 protruding towards the first aftertreatment carrier 31 in the air flow direction, and a plurality of air flow distribution holes 510 are uniformly distributed in the arc-shaped wall 51. In the illustrated embodiment of the utility model, the first aftertreatment support 31 is a three-way catalyst support and the second aftertreatment support 32 is a gasoline particulate trap support.

The inlet end cone 1 comprises an arc-shaped inner wall surface 11, and the mixer 5 comprises a ring of brim parts 52 fixed on the inner wall surface 11, thereby facilitating the installation and fixation of the mixer 5. The arc-shaped wall 51 is positioned at the inner side of the brim part 52, and the arc-shaped wall 51 and the brim part 52 are integrally formed. In the illustrated embodiment of the utility model, the arcuate wall 51 has an irregular hemispherical shape. The number of the plurality of air distribution holes 510 is not less than 90. Each of the air flow distribution holes 510 has a diameter of not less than 8 mm.

When the gas flow passes through the mixer 5, the gas flow can be relatively uniformly distributed on the inlet end surface of the first aftertreatment carrier 31, thereby improving the purification effect of the exhaust gas.

The above embodiments are only for illustrating the utility model and not for limiting the technical solutions described in the utility model, and the understanding of the present specification should be based on the technical personnel in the field, and although the present specification has described the utility model in detail with reference to the above embodiments, the technical personnel in the field should understand that the technical personnel in the field can still make modifications or equivalent substitutions to the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. An exhaust gas aftertreatment package assembly, comprising an exhaust gas aftertreatment package for connection to a manifold, the tail gas aftertreatment package comprises a gas inlet end cone connected with the manifold, a shell connected with the gas inlet end cone, a first aftertreatment carrier packaged in the shell, a second aftertreatment carrier packaged in the shell, and a gas outlet end cone connected with the shell, the first aftertreatment carrier and the second aftertreatment carrier are arranged at intervals along the airflow direction, the first aftertreatment carrier is positioned at the upstream of the second aftertreatment carrier along the airflow direction, the tail gas aftertreatment encapsulation subassembly is still including being fixed in the blender in the inlet end awl, the blender includes along the air current direction is towards the convex arc wall of first aftertreatment carrier, evenly distributed has a plurality of air current distribution holes on the arc wall.

2. The exhaust aftertreatment package assembly of claim 1, wherein: the manifold includes four tubes that converge into the inlet end cone.

3. The exhaust aftertreatment package assembly of claim 1, wherein: the air inlet end cone comprises an arc-shaped inner wall surface, and the mixer comprises a circle of brim part fixed on the inner wall surface.

4. The exhaust aftertreatment package assembly of claim 3, wherein: the arc-shaped wall is positioned on the inner side of the brim part, and the arc-shaped wall and the brim part are integrally formed.

5. The exhaust aftertreatment package assembly of claim 1, wherein: the arc-shaped wall is in an irregular hemispherical shape.

6. The exhaust aftertreatment package assembly of claim 1, wherein: the number of the air flow distribution holes is not less than 90.

7. The exhaust aftertreatment package assembly of claim 1, wherein: the diameter of each air flow distribution hole is not less than 8 mm.

8. The exhaust aftertreatment package assembly of claim 1, wherein: the first after-treatment carrier is a three-way catalyst carrier, and the second after-treatment carrier is a gasoline particle catcher carrier.