Air inlet cone shell

Abstract

An air inlet cone shell is provided with an air inlet part corresponding to an air inlet and a shell part connected with the air inlet part. The shell part is provided with a plate-shaped part and a bent part extending from the periphery of the plate-shaped part. And the plate-shaped part is circular. The plate-shaped part comprises a center part located in the center, a first circular-ring-shaped protruding part arranged on the periphery of the center part in a surrounding mode and a first circular-ring-shaped concave part connected between the center part and the first circular-ring-shaped protruding part in the radial direction of the plate-shaped part. The protruding direction of the first circular-ring-shaped protruding part is opposite to the concave direction of the first circular-ring-shaped concave part. By means of the arrangement, the rigidity of the air inlet cone shell can be improved through the first circular-ring-shaped protruding part and the first circular-ring-shaped concave part, and therefore the noise phenomenon caused by resonance is avoided.

Description

Technical Field

[0001] The invention relates to an intake cone housing, belonging to the technical field of engine tail gas aftertreatment. Background Art

[0002] The exhaust gas after-treatment device in the related art includes an intake cone, which is used to introduce the exhaust gas of the vehicle engine into the exhaust gas after-treatment device, and treat the exhaust gas through various catalysts arranged in the exhaust gas after-treatment device to meet the requirements of emission regulations.

[0003] The housing design of the air intake cone in the related art is relatively simple. However, during the operation of the vehicle, the air intake cone housing is prone to generate noise. Summary of the invention

[0004] The object of the present invention is to provide an air intake cone housing with good structural strength.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an intake cone shell, used in an exhaust gas after-treatment device, the intake cone shell is provided with an intake portion corresponding to the air inlet and a shell portion connected to the intake portion, the shell portion is provided with a plate-like portion and a bent portion extending from the periphery of the plate-like portion, the plate-like portion is circular, and the plate-like portion includes a central portion located in the center, a first annular protrusion portion surrounding the periphery of the central portion, and a first annular recessed portion connected between the central portion and the first annular protrusion portion along the radial direction of the plate-like portion, and the protrusion direction of the first annular protrusion is opposite to the recessed direction of the first annular recessed portion.

[0006] As a further improved technical solution of the present invention, the plate-like portion includes a second circular protrusion portion arranged around the periphery of the first circular protrusion portion and a second circular recessed portion connected between the first circular protrusion portion and the second circular protrusion portion along the radial direction of the plate-like portion, and the protrusion direction of the second circular protrusion portion is opposite to the recessed direction of the second circular recessed portion.

[0007] As a further improved technical solution of the present invention, the plate-like portion includes a third circular protrusion portion arranged around the periphery of the second circular protrusion portion and a third circular recessed portion connected between the second circular protrusion portion and the third circular protrusion portion along the radial direction of the plate-like portion, and the protrusion direction of the third circular protrusion portion is opposite to the recessed direction of the third circular recessed portion.

[0008] As a further improved technical solution of the present invention, along the radial direction of the plate-like portion, the width of the first annular protrusion, the width of the second annular protrusion and the width of the third annular protrusion increase sequentially.

[0009] As a further improved technical solution of the present invention, the plate-like portion is further provided with a recessed step portion close to the air inlet portion, and the step portion includes a first platform and a second platform, and the first platform and the second platform are located in different planes.

[0010] As a further improved technical solution of the present invention, the first platform and the second platform are both fan-shaped.

[0011] As a further improved technical solution of the present invention, the plate-like portion is also provided with a first boss portion and a second boss portion respectively located on both sides of the step portion, the first boss portion is provided with a first boss, the second boss portion is provided with a second boss, and the first boss and the second boss are both fan-shaped.

[0012] As a further improved technical solution of the present invention, the first boss and the second boss are located in the same plane.

[0013] As a further improved technical solution of the present invention, the step portion extends radially inwardly of the plate-like portion beyond the first boss and the second boss.

[0014] As a further improved technical solution of the present invention, along the radial direction of the plate-like portion, the cross-section of the first annular raised portion is arc-shaped, and the cross-section of the first annular recessed portion is also arc-shaped.

[0015] Compared with the prior art, the air intake cone housing of the present invention comprises a first annular protrusion arranged around the periphery of the central portion, and a first annular recessed portion connected between the central portion and the first annular protrusion along the radial direction of the plate-like portion, wherein the protrusion direction of the first annular protrusion is opposite to the recessed direction of the first annular recessed portion. In this way, the rigidity of the air intake cone housing can be increased by the first annular protrusion and the first annular recessed portion, thereby avoiding the noise phenomenon caused by resonance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of an intake cone housing of the present invention in one embodiment;

[0017] Figure 2 yes Figure 1 A top view of

[0018] Figure 3 is along Figure 2 Schematic diagram of the cross section along the AA line;

[0019] Figure 4 yes Figure 3 A partial enlarged view of the middle frame portion B. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] Please refer to Figures 1 to 4 As shown, the present invention discloses an air intake cone housing 100 for use in an exhaust gas aftertreatment device. The air intake cone housing 100 is provided with an air intake portion 1 corresponding to an air intake port 10 and a housing portion 2 connected to the air intake portion 1. The housing portion 2 is provided with a plate-shaped portion 21 and a bent portion 22 extending from the periphery of the plate-shaped portion 21. The plate-like portion 21 is circular, and includes a central portion 210 located in the center, a first annular protrusion 211 arranged around the periphery of the central portion 210, a first annular recessed portion 212 connected between the central portion 210 and the first annular protrusion 211 along the radial direction of the plate-like portion 21, a second annular protrusion 213 arranged around the periphery of the first annular protrusion 211, a second annular recessed portion 214 connected between the first annular protrusion 211 and the second annular protrusion 213 along the radial direction of the plate-like portion 21, a third annular protrusion 215 arranged around the periphery of the second annular protrusion 213, and a third annular recessed portion 216 connected between the second annular protrusion 213 and the third annular protrusion 215 along the radial direction of the plate-like portion 21.

[0023] In some embodiments, the top surface of the central portion 210 may be a plane. In other embodiments, the top surface of the central portion 210 may also be a raised structure to further increase structural strength.

[0024] In the illustrated embodiment of the present invention, the protrusion direction of the first annular protrusion 211 is opposite to the depression direction of the first annular depression 212. The protrusion direction of the second annular protrusion 213 is opposite to the depression direction of the second annular depression 214. The protrusion direction of the third annular protrusion 215 is opposite to the depression direction of the third annular depression 216.

[0025] In the illustrated embodiment of the present invention, along the radial direction of the plate-like portion 21 , the width of the first annular protrusion 211 , the width of the second annular protrusion 213 , and the width of the third annular protrusion 215 increase sequentially from inside to outside.

[0026] In the illustrated embodiment of the present invention, along the radial direction of the plate-like portion 21, the cross-sections of the first annular protrusion 211, the second annular protrusion 213 and the third annular protrusion 215 are all arc-shaped, and the cross-sections of the first annular recess 212, the second annular recess 214 and the third annular recess 216 are also arc-shaped. The first annular recess 212, the first annular protrusion 211, the second annular recess 214, the second annular protrusion 213, the third annular recess 216 and the third annular protrusion 215 are connected in sequence and are wavy. In this way, the rigidity of the plate-like portion 21 is strengthened as much as possible without increasing the volume structure, thereby avoiding the noise phenomenon caused by resonance.

[0027] In the illustrated embodiment of the present invention, the plate-shaped portion 21 is further provided with a recessed step portion 23 close to the air inlet portion 1 , and a first boss portion 24 and a second boss portion 25 respectively located on both sides of the step portion 23 .

[0028] The step portion 23 includes a first platform 231 and a second platform 232. The first platform 231 and the second platform 232 are located in different planes to form a step shape. In the illustrated embodiment of the present invention, the first platform 231 and the second platform 232 are both fan-shaped.

[0029] The first boss portion 24 is provided with a first boss 241, and the second boss portion 25 is provided with a second boss 251. The first boss 241 and the second boss 251 are both fan-shaped. The first boss 241 and the second boss 251 are located in the same plane.

[0030] In the illustrated embodiment of the present invention, the step portion 23 extends inwardly in the radial direction of the plate-shaped portion 21 beyond the first boss 241 and the second boss 251 .

[0031] In the illustrated embodiment of the present invention, the center line of the first platform 231 , the center line of the second platform 232 , and the center line of the air intake portion 1 are aligned with each other.

[0032] The present invention directionally strengthens a partial area by providing the step portion 23 , the first boss portion 24 and the second boss portion 25 , so that the overall frequency meets the requirement.

[0033] 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 intake cone housing, used in an exhaust gas aftertreatment device, characterized in that: The intake cone shell is provided with an intake portion corresponding to the intake port and a shell portion connected to the intake portion, the shell portion is provided with a plate-like portion and a bent portion extending from the periphery of the plate-like portion, the plate-like portion is circular, and the plate-like portion includes a central portion located at the center, a first annular protrusion portion arranged around the periphery of the central portion, and a first annular recessed portion connected between the central portion and the first annular protrusion portion along the radial direction of the plate-like portion, and the protrusion direction of the first annular protrusion portion is opposite to the recessed direction of the first annular recessed portion.

2. The air intake cone housing according to claim 1, characterized in that: The plate-like portion includes a second annular protrusion portion arranged around the periphery of the first annular protrusion portion and a second annular recessed portion connected between the first annular protrusion portion and the second annular protrusion portion along the radial direction of the plate-like portion, and the protrusion direction of the second annular protrusion portion is opposite to the recessed direction of the second annular recessed portion.

3. The air intake cone housing according to claim 2, characterized in that: The plate-like portion includes a third annular protrusion portion arranged around the periphery of the second annular protrusion portion and a third annular recessed portion connected between the second annular protrusion portion and the third annular protrusion portion along the radial direction of the plate-like portion, and the protrusion direction of the third annular protrusion portion is opposite to the recessed direction of the third annular recessed portion.

4. The air intake cone housing according to claim 3, characterized in that: Along the radial direction of the plate-shaped portion, the width of the first annular protrusion, the width of the second annular protrusion, and the width of the third annular protrusion increase in sequence.

5. The air intake cone housing according to claim 1, characterized in that: The plate-shaped portion is further provided with a recessed step portion close to the air inlet portion, and the step portion includes a first platform and a second platform, and the first platform and the second platform are located in different planes.

6. The air intake cone housing according to claim 5, characterized in that: The first platform and the second platform are both fan-shaped.

7. The air intake cone housing according to claim 5, characterized in that: The plate-like portion is further provided with a first boss portion and a second boss portion respectively located on both sides of the step portion, the first boss portion is provided with a first boss, the second boss portion is provided with a second boss, and the first boss and the second boss are both fan-shaped.

8. The air intake cone housing according to claim 7, characterized in that: The first boss and the second boss are located in the same plane.

9. The air intake cone housing according to claim 7, characterized in that: The step portion extends inwardly in a radial direction of the plate-shaped portion beyond the first boss and the second boss.

10. The air inlet cone housing according to any one of claims 1 to 9, characterized in that: Along the radial direction of the plate-shaped portion, the cross section of the first annular raised portion is arc-shaped, and the cross section of the first annular recessed portion is also arc-shaped.

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