Air inlet assembly

Abstract

An air inlet assembly comprises a shell, an air inlet pipe, a perforated pipe and a partition plate. The shell is provided with an air inlet cavity and comprises an end cover and a circumferential wall. The air inlet pipe at least partially protrudes out of the end cover, and the air inlet pipe comprises a first opening part, a second opening part and an air inlet channel. The perforated pipe is provided with an inner cavity communicated with the air inlet channel and at least one hole communicated with the inner cavity and the air inlet cavity. The partition plate is fixed in the air inlet pipe so as to divide the air inlet channel into a first air inlet channel and a second air inlet channel. When tail gas flows in, the tail gas can flow into the first gas inlet channel and the second gas inlet channel in a layered mode, on one hand, excessive impact of the tail gas on a local area is reduced, and durability can be improved; and on the other hand, the tail gas flowing in a layered manner is beneficial to reducing the back pressure.

Description

Technical Field

[0001] The utility model relates to an air intake component and belongs to the technical field of engine tail gas post-processing. Background Art

[0002] Intake assemblies in related art typically include an intake cavity and an intake pipe connected to the cavity. The intake pipe is typically a monolithic, hollow structure. When exhaust gas flows from the intake pipe into the cavity, it tends to accumulate in a localized area. This, on the one hand, subjects the area to significant airflow impact, potentially causing durability issues; on the other hand, it can easily lead to excessive backpressure in the system.

[0003] Therefore, it is necessary to improve the air intake assembly in the related art. Utility Model Content

[0004] The purpose of the utility model is to provide an air intake component which is beneficial to reducing back pressure.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an air intake assembly, applied to an exhaust gas after-treatment device, comprising:

[0006] A housing, wherein the housing is provided with an air inlet cavity, and the housing includes an end cover and a circumferential wall fixed to the end cover;

[0007] an air intake pipe, the air intake pipe at least partially protruding from the end cover, the air intake pipe comprising a first opening, a second opening, and an air intake passage located between the first opening and the second opening;

[0008] a porous tube, wherein the porous tube is at least partially located in the air inlet cavity, the porous tube having a tube wall, an inner cavity communicating with the air inlet passage, and at least one opening penetrating the tube wall and communicating the inner cavity with the air inlet cavity, the air inlet tube being fixed to the porous tube; and

[0009] A partition is fixed in the intake pipe to divide the intake passage into a first intake passage located on one side of the partition and a second intake passage located on the other side of the partition.

[0010] As a further improved technical solution of the present invention, the partition extends from the first opening of the intake pipe to the second opening of the intake pipe.

[0011] As a further improved technical solution of the present invention, the air intake pipe is an arc-shaped curved pipe.

[0012] As a further improved technical solution of the present invention, the partition is arc-shaped.

[0013] As a further improved technical solution of the present invention, the intake pipe includes a first half shell and a second half shell, the first half shell and the second half shell are welded and fixed, and the partition is fixed to the first half shell and / or the second half shell by plug welding.

[0014] As a further improved technical solution of the present invention, the end cover is provided with a mounting hole, the porous tube is at least partially inserted into the mounting hole, and the air intake pipe is partially inserted into the porous tube.

[0015] As a further improved technical solution of the present invention, the openings include a plurality of first openings located in a first row and a plurality of second openings located in a second row, and the first openings and the second openings are spaced apart along the axial direction of the porous tube.

[0016] As a further improved technical solution of the present invention, the porous tube further includes an arc-shaped reinforcing rib located between the first opening and the second opening along the axial direction of the porous tube.

[0017] As a further improved technical solution of the present invention, the porous tube includes a notch located on one side thereof, and the notch connects the inner cavity and the air inlet cavity.

[0018] As a further improved technical solution of the present invention, the air intake assembly also includes a baffle opposite to the end cover, and the air intake cavity is surrounded by the end cover, the circumferential wall and the baffle, wherein one end of the porous tube away from the air intake pipe is fixed to the baffle.

[0019] Compared to existing technologies, the intake assembly of the present invention features a baffle fixed to the intake pipe to separate the intake passage into a first intake passage located on one side of the baffle and a second intake passage located on the other side. When exhaust gas flows in, it flows in layers into the first and second intake passages. This reduces excessive impact of exhaust gas on local areas, improving durability. Furthermore, the stratified exhaust flow helps reduce backpressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of an air intake assembly of the utility model in one embodiment;

[0021] Figure 2 yes Figure 1 3D exploded view of

[0022] Figure 3 yes Figure 2 3D exploded view from another angle;

[0023] Figure 4 It is along Figure 1 Schematic diagram of the cross section along line AA. DETAILED DESCRIPTION

[0024] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. If there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers or symbols in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments of the present invention. On the contrary, they are only examples of products that are consistent with the present invention and are described in the claims of the present invention.

[0025] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the scope of protection of this utility model. It should be understood that the terms "first", "second" and similar terms used in the specification and claims of this utility model do not indicate any order, quantity or importance, but are merely used to distinguish features.

[0026] Please refer to Figures 1 to 4 As shown, the present invention discloses an air intake assembly 100 for use in an exhaust gas aftertreatment device. The air intake assembly 100 includes a housing 1, an air intake pipe 2, a porous pipe 3, and a partition 4. The housing 1 is provided with an air intake cavity 10. The housing 1 includes an end cap 11, a circumferential wall 12 fixed to the end cap 11, and a baffle 13 opposite the end cap 11. In the illustrated embodiment of the present invention, the air intake cavity 10 is enclosed by the end cap 11, the circumferential wall 12, and the baffle 13.

[0027] In the illustrated embodiment of the present invention, the intake pipe 2 is located at a corner of the end cover 11. The intake pipe 2 at least partially protrudes from the end cover 11. The intake pipe 2 includes a first opening 21, a second opening 22, and an intake passage 20 located between the first opening 21 and the second opening 22. In the illustrated embodiment of the present invention, the intake pipe 2 is an arc-shaped curved pipe.

[0028] In the illustrated embodiment of the present invention, the intake pipe 2 includes a first half shell 23 and a second half shell 24, which are welded to each other. The partition plate 4 is fixed to the first half shell 23 and / or the second half shell 24 by plug welding.

[0029] The porous tube 3 is at least partially located in the air intake cavity 10. The porous tube 3 includes a tube wall 31, an inner cavity 30 communicating with the air intake passage 20, and at least one opening 32 penetrating the tube wall 31 and connecting the inner cavity 30 with the air intake cavity 10. The air intake pipe 2 is fixed to the porous tube 3.

[0030] In the illustrated embodiment of the present invention, the openings 32 include a plurality of first openings 321 located in a first row and a plurality of second openings 322 located in a second row, wherein the first openings 321 and the second openings 322 are spaced apart from each other along the axial direction of the porous tube 3. The porous tube 3 further includes an arc-shaped reinforcing rib 323 located between the first openings 321 and the second openings 322 along the axial direction of the porous tube 3.

[0031] In the illustrated embodiment of the present invention, the porous tube 3 includes a notch 33 located on one side thereof, and the notch 33 connects the inner cavity 30 and the air inlet cavity 10 .

[0032] The partition plate 4 is fixed to the intake pipe 2 to divide the intake passage 20 into a first intake passage 201 located on one side of the partition plate 4 and a second intake passage 202 located on the other side of the partition plate 4. In the illustrated embodiment of the present invention, the partition plate 4 extends from the first opening 21 of the intake pipe 2 to the second opening 22 of the intake pipe 2. In the illustrated embodiment of the present invention, the partition plate 4 is arc-shaped.

[0033] The end cap 11 is provided with a mounting hole 110. The porous tube 3 is at least partially inserted into the mounting hole 110. The intake pipe 2 is partially inserted into the porous tube 3 and secured by welding. The end of the porous tube 3 away from the intake pipe 2 is secured to the baffle 13. The end of the porous tube 3 away from the intake pipe 2 is secured to the baffle 13 by welding (e.g., plug welding).

[0034] Compared to the prior art, the intake assembly 100 of the present invention is equipped with a partition 4, which is fixed to the intake pipe 2 to separate the intake channel 20 into a first intake channel 201 located on one side of the partition 4 and a second intake channel 202 located on the other side of the partition 4. When exhaust gas flows in, it can flow into the first intake channel 201 and the second intake channel 202 in a stratified manner. This not only reduces excessive impact of the exhaust gas on local areas, but also helps improve durability. Furthermore, the stratified flow of the exhaust gas can improve the flow field distribution and enhance airflow uniformity, which helps reduce backpressure.

[0035] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. An air intake assembly, used in an exhaust gas after-treatment device, characterized in that: The air intake assembly comprises: A housing, wherein the housing is provided with an air inlet cavity, and the housing includes an end cover and a circumferential wall fixed to the end cover; an air intake pipe, the air intake pipe at least partially protruding from the end cover, the air intake pipe comprising a first opening, a second opening, and an air intake passage located between the first opening and the second opening; a porous tube, wherein the porous tube is at least partially located in the air inlet cavity, the porous tube having a tube wall, an inner cavity communicating with the air inlet passage, and at least one opening penetrating the tube wall and communicating the inner cavity with the air inlet cavity, the air inlet tube being fixed to the porous tube; and A partition is fixed in the intake pipe to divide the intake passage into a first intake passage located on one side of the partition and a second intake passage located on the other side of the partition.

2. The air intake assembly according to claim 1, wherein: The partition plate extends from the first opening portion of the intake duct to the second opening portion of the intake duct.

3. The air intake assembly according to claim 1, wherein: The air inlet pipe is an arc-shaped curved pipe.

4. The air intake assembly according to claim 1, wherein: The partition is arc-shaped.

5. The air intake assembly according to claim 1, wherein: The air intake pipe includes a first half shell and a second half shell, the first half shell and the second half shell are fixed by welding, and the partition is fixed to the first half shell and / or the second half shell by plug welding.

6. The air intake assembly according to claim 1, wherein: The end cover is provided with a mounting hole, the porous tube is at least partially inserted into the mounting hole, and the air inlet pipe is partially inserted into the porous tube.

7. The air intake assembly according to claim 1, wherein: The openings include a plurality of first openings located in a first row and a plurality of second openings located in a second row, and the first openings and the second openings are spaced apart from each other along the axial direction of the porous tube.

8. The air intake assembly according to claim 7, wherein: The porous tube further includes an arc-shaped reinforcing rib located between the first opening and the second opening along the axial direction of the porous tube.

9. The air intake assembly according to claim 1, wherein: The porous tube includes a notch located on one side thereof, and the notch connects the inner cavity and the air inlet cavity.

10. The air intake assembly according to any one of claims 1 to 9, characterized in that: The air intake assembly further includes a baffle opposite to the end cover, the air intake cavity is surrounded by the end cover, the circumferential wall and the baffle, wherein one end of the porous tube away from the air intake pipe is fixed to the baffle.

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