CN221002917U

CN221002917U - Exhaust pipe structure

Info

Publication number: CN221002917U
Application number: CN202322736573.8U
Authority: CN
Inventors: 江松标
Original assignee: Zhejiang Angong Zhichuang Technology Co ltd
Current assignee: Zhejiang Angong Zhichuang Technology Co ltd
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2024-05-24
Anticipated expiration: 2033-10-12

Abstract

The application discloses an exhaust pipe structure, and belongs to the field of automobile accessories. The device comprises a flange, a plurality of exhaust manifolds, a connecting piece and a three-way catalyst; the flange is configured to be provided with a plurality of air inlet holes; the exhaust manifold is fixedly arranged on the surface of the flange, and the inner wall of the exhaust gas pipe is coplanar with the inner wall of the air inlet hole; the connecting piece forms a connecting channel for connecting a plurality of exhaust manifolds and the three-way catalyst; one end of the connecting channel forms a butt joint interface which is in butt joint with a plurality of exhaust manifolds; one end of the exhaust manifold is connected with the butt joint opening so that the inner wall of the exhaust manifold is coplanar with the opening wall of the butt joint opening. The application has the beneficial effect of providing the exhaust pipe structure with smooth exhaust.

Description

Exhaust pipe structure

Technical Field

The application relates to the field of automobile accessories, in particular to an exhaust pipe structure.

Background

The automobile exhaust pipe is a branched pipeline which is connected with the engine cylinder body and used for centralizing the exhaust of each cylinder and guiding the exhaust into the exhaust manifold; a three-way catalyst for intensively purifying the automobile exhaust gas is arranged at the tail end of the automobile exhaust pipe;

in the existing exhaust pipe structure, a plurality of pipelines of the exhaust pipe are directly connected in a three-way catalyst; in actual use, a manufacturer can connect a plurality of exhaust pipelines with the air inlets of the three-way catalyst by adding a main pipe, but the main pipe is only welded with the outer walls of the exhaust pipelines; when a plurality of exhaust pipelines exhaust, the exhaust pipelines collide with each other in the main pipe to form turbulence, so that the smoothness of the exhaust is reduced;

Therefore, it is necessary to design an exhaust pipe structure for preventing turbulence and improving the smoothness of the exhaust gas to solve the above-mentioned drawbacks of the prior art.

Disclosure of utility model

The summary of the application is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary of the application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

In order to solve the technical problems mentioned in the background section above, some embodiments of the present application provide an exhaust pipe structure, a flange, a plurality of exhaust manifolds, a connecting piece, and a three-way catalyst;

The flange is configured to be provided with a plurality of air inlet holes;

the exhaust manifold is fixedly arranged on the surface of the flange, and the inner wall of the exhaust manifold is coplanar with the inner wall of the air inlet hole;

the connecting piece forms a connecting channel for connecting a plurality of exhaust manifolds and the three-way catalyst;

One end of the connecting channel forms a butt joint interface which is in butt joint with a plurality of exhaust manifolds; one end of the exhaust manifold is connected with the butt joint opening so that the inner wall of the exhaust manifold is coplanar with the opening wall of the butt joint opening;

in the installation process, the traditional exhaust pipe main pipe connection mode is canceled, the exhaust manifold and the three-way catalyst are connected by arranging a connecting piece, and an opposite port is arranged on the connecting piece, so that the inner wall of the exhaust manifold is coplanar with the port wall of the opposite port, and the exhaust manifold and the connecting piece are in seamless butt joint; therefore, the gas can enter the connecting channel along the extending direction of the port wall of the port, the phenomenon that a plurality of gas strands are converged to form turbulent flow is avoided, and the smoothness of exhaust is improved.

Further, the surface portion of the connection member is protruded by a certain distance to form a protrusion;

The end part of the protruding part penetrates through the connecting channel to form a pair of interfaces;

Wherein, a plurality of protruding portions are circumferentially distributed on the surface of the connecting piece.

Further, an axis formed perpendicular to the surface of the connection member and circumferentially distributed around the plurality of projections is defined as a rotation axis;

the central axis of any protruding part intersects with the rotation axis on the same plane and forms an included angle alpha;

wherein, the contained angle alpha that a plurality of bellying formed is the same.

Further, the surface part of the protruding part is axially concave, and the concave part radially penetrates in a direction far away from the central axis of the protruding part to form a butt joint part;

The diameter of the outer wall of the butt joint part is not larger than the pipe diameter of the exhaust manifold.

Further, the abutment forms a stop collar that abuts the end of the exhaust manifold.

Further, the abutting joint part of the limiting ring and the exhaust manifold forms a welding ring.

Further, the central position of the connecting channel, which is positioned at the converging positions of the plurality of butt joints, is fixedly provided with a guide cone for guiding the air flow in the butt joints to enter the connecting channel.

Further, the surface of the diversion cone corresponding to the inner wall of the butt joint is formed into an arc diversion surface.

The application has the beneficial effects that: provided is an exhaust pipe structure which prevents turbulence from being generated during the exhaust process and improves the smoothness of the exhaust.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application.

In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

In the drawings:

FIG. 1 is an overall schematic of an embodiment according to the present application;

FIG. 2 is a schematic structural view of a portion of an embodiment, mainly illustrating the structure of a connecting member;

FIG. 3 is a schematic view of FIG. 2 in semi-section in this embodiment;

fig. 4 is a schematic structural view of a part of the embodiment, mainly showing a schematic view of the installation position of the guide cone.

Reference numerals:

1. A flange; 2. an exhaust manifold;

3. a connecting piece; a3, connecting channels; a31, a butt joint; 31. a boss;

4. A three-way catalyst;

l1, axis of rotation; l2, central axis;

5. an included angle alpha;

6. A butt joint part; 61. a limiting ring; a61, inclined planes;

7. A diversion cone; a7, a diversion surface;

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, an exhaust pipe structure is characterized by comprising: flange 1, several exhaust manifolds 2, connecting piece 3, ternary catalysis;

In some embodiments, the flange 1 is configured to form a plurality of air inlet holes, and the exhaust manifold 2 is fixedly arranged on the surface of the flange 1, and the inner wall of the exhaust manifold is coplanar with the inner wall of the air inlet holes; the number of the exhaust manifolds 2 is consistent with that of the air inlets, and each exhaust manifold 2 is provided with a round corner bending section with different bending degrees, so that the installation space can be saved after the exhaust manifold is installed in an automobile; the flange 1 is arranged on an automobile engine, and an air inlet hole is communicated with an air outlet hole of the engine;

In some embodiments, the connection 3 forms a connection channel a3 for connecting several exhaust manifolds 2 and three-way catalysts 4; wherein, one end of the connecting channel a3 forms a butt joint a31 which is butt jointed with a plurality of exhaust manifolds 2; one end of the exhaust manifold 2 is connected with the butt joint port a31 so that the inner wall of the exhaust manifold 2 is coplanar with the port wall of the butt joint port a31; the surface of the joint of the exhaust manifold 2 and the connecting piece 3 does not have any barrier to cause turbulent flow to the air flow, so that the air flow is smoother.

Specifically, the connecting piece 3 is a cylindrical metal pipe, the surface part of the connecting piece 3 is protruded for a certain distance to form a protrusion part 31, and the end part of the protrusion part 31 penetrates to the connecting channel a3 to form a butt joint a31; preferably, the plurality of protrusions 31 are circumferentially distributed on the surface of the connecting piece 3;

In some embodiments, an axis formed perpendicular to the surface of the connection member 3 and circumferentially distributed around the plurality of projections 31 is defined as a rotation axis L1; the central axis L2 of any protruding part 31 intersects with the rotation axis L1 on the same plane and forms an included angle alpha 5; wherein, the included angle alpha 5 formed by the convex parts 31 is the same; the arrangement can facilitate the butt joint of the bulge 31 and the exhaust manifold 2, and the bulge and the exhaust manifold are not mutually interfered during installation;

Specifically, the surface portion of the boss 31 is axially recessed by a certain distance, and the recessed portion penetrates in a direction away from the central axis L2 of the boss 31 radially to form the butt joint portion 6; the diameter of the outer wall of the butt joint part 6 is not larger than the pipe diameter of the exhaust manifold 2; the arrangement enables the exhaust manifold 2 to be sleeved on the butt joint part 6, and the inner wall of the exhaust manifold 2 and the mouth wall of the butt joint mouth a31 form a coplanarity after the sleeving.

In some embodiments, the interface 6 forms a stop collar 61, the stop collar 61 abutting the end of the exhaust manifold 2; preferably, the stop collar 61 forms a bevel a61; a chamfer corresponding to the limit ring 61 is formed at the pipe orifice of the exhaust manifold 2; specifically, the abutting joint part of the limiting ring 61 and the exhaust manifold 2 forms a welding ring; the welding effect is better due to the interference of the chamfer and the inclined surface a61, so that the strength of the exhaust manifold 2 and the connecting piece 3 after connection is improved;

In some preferred embodiments, after the exhaust manifold 2 and the connecting piece 3 are abutted, the inner wall of the connecting channel a3 is polished, so that the exhaust manifold 2 and the connecting piece 3 are smoother, the exhaust gas smoothness is prevented from being influenced by the barriers, and the exhaust smoothness is improved.

In some preferred embodiments, a diversion cone 7 for guiding the air flow in the opposite port a31 to enter the connection channel a3 is fixedly arranged at the central position of the connection channel a3 where the plurality of opposite ports a31 are converged; the surface of the diversion cone 7 corresponding to the inner wall of the opposite interface a31 forms an arc diversion surface a7; when a plurality of airflows enter the connecting piece 3 from the exhaust manifold 2, the airflows can be smoothly converged in the connecting channel a3 through the diversion effect of the diversion surface a7, so that turbulent flow is prevented from being formed, and the smoothness of exhaust is improved.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the invention. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. An exhaust pipe structure, characterized by comprising:

The device comprises a flange, a plurality of exhaust manifolds, a connecting piece and a three-way catalyst;

the flange is configured to be provided with a plurality of air inlet holes;

One end of the connecting channel forms a butt joint interface which is in butt joint with a plurality of exhaust manifolds; one end of the exhaust manifold is connected with the butt joint opening so that the inner wall of the exhaust manifold is coplanar with the opening wall of the butt joint opening.

2. The exhaust pipe structure according to claim 1, characterized in that:

The surface part of the connecting piece is raised for a certain distance to form a raised part;

The end part of the protruding part penetrates through the connecting channel to form the butt joint port;

Wherein, a plurality of protruding parts are distributed on the surface of the connecting piece in a circumference way.

3. The exhaust pipe structure according to claim 2, characterized in that:

Defining an axis perpendicular to the surface of the connecting member and formed by circumferentially distributing a plurality of the protrusions around the axis as a rotation axis;

wherein, the included angle alpha formed by a plurality of protruding parts is the same.

4. An exhaust pipe structure according to claim 3, characterized in that:

The surface part of the protruding part is axially concave, and the concave part radially penetrates in a direction away from the central axis of the protruding part to form a butt joint part;

5. The exhaust pipe structure according to claim 4, characterized in that:

The butt joint part forms a limiting ring which is abutted against the end part of the exhaust manifold.

6. The exhaust pipe structure according to claim 5, characterized in that:

and the abutting joint part of the limiting ring and the exhaust manifold forms a welding ring.

7. An exhaust pipe structure according to claim 3, characterized in that:

And the central positions of the converging positions of the butt joints in the connecting channels are fixedly provided with guide cones used for guiding air flow in the butt joints to enter the connecting channels.

8. The exhaust pipe structure according to claim 7, characterized in that:

the surface of the diversion cone corresponding to the inner wall of the butt joint is an arc diversion surface.