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 invention relates to an air intake component, belonging to the technical field of engine exhaust post-processing. Background Art

[0002] The air intake assembly in the related art usually includes an air intake cavity and an air intake pipe connected to the air intake cavity. The air intake pipe is usually an integral hollow structure. When the exhaust gas flows from the air intake pipe into the air intake cavity, the exhaust gas tends to gather in a local area. On the one hand, the local area is subjected to a greater air flow impact, which is likely to cause durability problems; on the other hand, it is likely to cause excessive back pressure in the system.

[0003] Therefore, it is necessary to improve the air intake assembly in the related art. Summary of the invention

[0004] An object of the present invention is to provide an air intake assembly which is beneficial to reducing back pressure.

[0005] To achieve the above object, the present invention adopts the following technical solution: an air intake component, applied to an exhaust gas after-treatment device, the air intake component comprises:

[0006] A shell, wherein the shell is provided with an air inlet cavity, and the shell comprises 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 portion, a second opening portion, and an air intake passage located between the first opening portion and the second opening portion;

[0008] A porous tube, wherein at least a portion of the porous tube is located in the air inlet cavity, the porous tube is provided with 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 air intake pipe to divide the air intake passage into a first air intake passage located on one side of the partition and a second air 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 portion of the intake pipe to the second opening portion 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 is welded and fixed to the second half shell, 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 from each other 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, the air intake cavity is surrounded by the end cover, the circumferential wall and the baffle, and one end of the porous tube away from the air intake pipe is fixed to the baffle.

[0019] Compared with the prior art, the air intake assembly of the present invention is provided with a partition, and the partition is fixed in the air intake pipe to divide the air intake channel into a first air intake channel located on one side of the partition and a second air intake channel located on the other side of the partition. When the exhaust gas flows in, the exhaust gas can flow into the first air intake channel and the second air intake channel in layers, which reduces the excessive impact of the exhaust gas on the local area and is conducive to improving durability; on the other hand, the laminar flow of the exhaust gas is conducive to reducing the back pressure. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 yes Figure 2 A three-dimensional exploded view from another angle;

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

[0024] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, where 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 specific embodiments do not represent all embodiments of the present invention. On the contrary, they are only examples of products consistent with the present invention as recorded in the claims of the present invention.

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

[0026] Please refer to Figures 1 to 4 As shown, the present invention discloses an air intake assembly 100, which is applied to an exhaust gas after-treatment device. The air intake assembly 100 includes a shell 1, an air intake pipe 2, a porous pipe 3 and a partition 4. The shell 1 is provided with an air intake cavity 10. The shell 1 includes an end cover 11, a circumferential wall 12 fixed to the end cover 11 and a baffle 13 opposite to the end cover 11. In the illustrated embodiment of the present invention, the air intake cavity 10 is surrounded by the end cover 11, the circumferential wall 12 and the baffle 13.

[0027] In the illustrated embodiment of the present invention, the air intake pipe 2 is located at a corner of the end cover 11. The air intake pipe 2 at least partially protrudes from the end cover 11. The air intake pipe 2 includes a first opening portion 21, a second opening portion 22, and an air intake passage 20 located between the first opening portion 21 and the second opening portion 22. In the illustrated embodiment of the present invention, the air 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, and the first half shell 23 and the second half shell 24 are welded and fixed. 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, and is provided with 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 communicating 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, and the first openings 321 and the second openings 322 are arranged at intervals along the axial direction of the porous tube 3. The porous tube 3 also 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 with the air inlet cavity 10 .

[0032] The partition plate 4 is fixed in 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 portion 21 of the intake pipe 2 to the second opening portion 22 of the intake pipe 2. In the illustrated embodiment of the present invention, the partition plate 4 is arc-shaped.

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

[0034] Compared with the prior art, the air intake assembly 100 of the present invention is provided with a partition 4, and the partition 4 is fixed in the air intake pipe 2 to partition the air intake channel 20 into a first air intake channel 201 located on one side of the partition 4 and a second air intake channel 202 located on the other side of the partition 4. When the exhaust gas flows in, the exhaust gas can flow into the first air intake channel 201 and the second air intake channel 202 in layers, which, on the one hand, reduces the excessive impact of the exhaust gas on the local area, which is beneficial to improve durability; on the other hand, the exhaust gas in layered flow can improve the flow field distribution and improve the uniformity of the air flow, which is beneficial to reduce the back pressure.

[0035] The above embodiments are only used to illustrate the present invention but not to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technicians in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technicians in the field should understand that technicians 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 within the scope of the claims of the present invention.

Claims

1. An air intake assembly, used in an exhaust gas aftertreatment device, characterized in that: The air intake assembly comprises: A shell, wherein the shell is provided with an air inlet cavity, and the shell comprises 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 portion, a second opening portion, and an air intake passage located between the first opening portion and the second opening portion; A porous tube, wherein at least a portion of the porous tube is located in the air inlet cavity, the porous tube is provided with 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 air intake pipe to divide the air intake passage into a first air intake passage located on one side of the partition and a second air intake passage located on the other side of the partition.

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

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

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

5. The air intake assembly according to claim 1, characterized in that: The air intake pipe comprises a first half shell and a second half shell, the first half shell is fixed to the second half shell 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: The porous tube comprises a notch located on one side thereof, and the notch communicates the inner cavity with 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 plate opposite to the end cover, the air intake cavity is surrounded by the end cover, the circumferential wall and the baffle plate, wherein one end of the porous tube away from the air intake pipe is fixed to the baffle plate.

Images