Exhaust aftertreatment housing and exhaust aftertreatment encapsulation

Abstract

An exhaust gas aftertreatment housing includes a cone and an insulating housing that mates with the cone. The cone has a first weld and a second weld. The insulating housing has a first side edge and a second side edge, wherein the first side edge has a first notch, a second notch, a third notch, and a fourth notch spaced apart. When the cone and the insulating housing are engaged in a first position, the first weld corresponds to the first notch, and the second weld corresponds to the third notch; when the cone and the insulating housing are engaged in a second position, the first weld corresponds to the second notch, and the second weld corresponds to the fourth notch. This invention, by providing multiple notches, allows for multi-angle engagement when the cone and the insulating housing are engaged in the first and second positions, with different notches engaging with the cone respectively, thereby achieving the feasibility of multi-angle engagement and improving installation versatility.

Description

Technical Field

[0001] This invention relates to an exhaust aftertreatment housing and exhaust aftertreatment encapsulation, belonging to the field of diesel engine exhaust aftertreatment technology. Background Technology

[0002] Existing exhaust aftertreatment packages include an exhaust aftertreatment housing, which includes a cone (e.g., an intake cone) and an insulating shell that mates with the cone. The insulating shell typically covers the catalyst carrier packaging housing. The insulating shell usually has several notches corresponding to the cone and several sensor clearance slots that mate with sensor mounts.

[0003] However, as the application scope expands, the installation angle of the cone also changes continuously. The notches and sensor clearance slots originally provided on the insulation shell to correspond one-to-one with the cone and sensor seat are no longer sufficient to meet diverse installation requirements. This necessitates the design of different insulation shells for different installation angles, which is not conducive to cost savings. Summary of the Invention

[0004] The purpose of this invention is to provide an exhaust aftertreatment housing and exhaust aftertreatment encapsulation capable of multi-angle cooperation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an exhaust gas aftertreatment housing, comprising a cone and a heat-insulating housing cooperating with the cone, the cone having a first weld and a second weld; the heat-insulating housing having a first side edge and a second side edge opposite to the first side edge, the first side edge having a first notch, a second notch, a third notch and a fourth notch spaced apart, the second side edge having at least two clearance grooves for avoiding sensor seats, wherein:

[0006] When the cone is engaged with the insulation shell in the first position, the first weld corresponds to the first notch, and the second weld corresponds to the third notch;

[0007] When the cone is engaged with the insulation shell in the second position, the first weld corresponds to the second notch, and the second weld corresponds to the fourth notch.

[0008] As a further improved technical solution of the present invention, the first side edge is provided with a first circumference, wherein the first notch, the second notch, the third notch and the fourth notch are distributed at intervals along the first circumference.

[0009] As a further improvement of the present invention, the arc length between the first notch and the third notch is equal to the arc length between the second notch and the fourth notch.

[0010] As a further improved technical solution of the present invention, the cone includes a first half-shell and a second half-shell, wherein the first half-shell includes a first inner half-shell and a first outer half-shell, and the second half-shell includes a second inner half-shell and a second outer half-shell; the welding joint between the first inner half-shell and the second inner half-shell forms the first weld and the second weld.

[0011] As a further improved technical solution of the present invention, the first half of the inner shell and the second half of the inner shell are fixed to the inner side of the first side edge of the heat insulation shell, and the first half of the outer shell and the second half of the outer shell are fixed to the outer side of the first side edge of the heat insulation shell.

[0012] As a further improvement of the present invention, the first half of the inner shell and the second half of the inner shell are provided with mutually cooperating flanges, and the first weld and the second weld are formed at the flanges.

[0013] As a further improvement of the present invention, the cone is an air intake cone, and the air intake cone is provided with an air intake port.

[0014] As a further improvement of the present invention, the second side edge is provided with a second circumference, and the number of the clearance grooves is greater than or equal to four, and these clearance grooves are distributed at intervals along the second circumference; the sensor seat includes a first sensor seat for mounting a temperature sensor and a second sensor seat for mounting a pressure sensor, the first sensor seat is disposed in one of the clearance grooves, and the second sensor seat is disposed in the other clearance groove.

[0015] The present invention also relates to an exhaust gas aftertreatment package, comprising a first cylindrical body, a first aftertreatment unit packaged within the first cylindrical body, a second cylindrical body aligned with the first cylindrical body, a second aftertreatment unit packaged within the second cylindrical body, a third cylindrical body arranged side by side with the first cylindrical body and the second cylindrical body, a third aftertreatment unit packaged within the third cylindrical body, and a connecting shell connecting the second cylindrical body and the third cylindrical body. The exhaust gas aftertreatment package further includes the aforementioned exhaust gas aftertreatment shell, wherein the heat insulation shell covers the first cylindrical body.

[0016] As a further improved technical solution of the present invention, the exhaust aftertreatment package is generally U-shaped, the first aftertreatment unit is a diesel catalytic oxidant (DOC), the second aftertreatment unit is a diesel particulate filter (DPF), and the third aftertreatment unit is a selective catalytic reduction agent (SCR).

[0017] Compared with the prior art, the present invention has multiple notches. When the cone and the insulation shell are engaged in the first position and the second position, different notches are engaged with the cone respectively, thereby realizing the feasibility of multi-angle engagement and meeting diverse installation needs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the exhaust gas aftertreatment package of the present invention.

[0019] Figure 2 yes Figure 1 Top view.

[0020] Figure 3 yes Figure 1 3D exploded view.

[0021] Figure 4 This is a three-dimensional schematic diagram of the exhaust gas aftertreatment housing, the first cylinder, and the first aftertreatment unit of the present invention.

[0022] Figure 5 yes Figure 4 3D exploded view.

[0023] Figure 6 It is to remove Figure 4 A three-dimensional schematic diagram of the first half of the outer shell and the second half of the outer shell.

[0024] Figure 7 yes Figure 6 Another perspective of the exploded 3D view.

[0025] Figure 8 This is a three-dimensional schematic diagram of the first half of the inner shell.

[0026] Figure 9 This is a three-dimensional schematic diagram of the second half of the inner shell. Detailed Implementation

[0027] Please refer to Figures 1 to 3 As shown, the present invention discloses an exhaust gas aftertreatment package 100, which includes a first cylindrical body 11, a first aftertreatment unit 12 encapsulated within the first cylindrical body 11, a second cylindrical body 21 aligned with the first cylindrical body 11, a second aftertreatment unit 22 encapsulated within the second cylindrical body 21, a third cylindrical body 31 arranged side by side with the first cylindrical body 11 and the second cylindrical body 21, a third aftertreatment unit 32 encapsulated within the third cylindrical body 31, a connecting housing 4 connecting the second cylindrical body 21 and the third cylindrical body 31, and an exhaust gas aftertreatment housing 5. The connecting housing 4 is provided with a turning cavity 40 that guides the airflow from the second aftertreatment unit 22 to the third aftertreatment unit 32.

[0028] In the embodiment illustrated in the present invention, the exhaust aftertreatment package 100 is generally U-shaped. The first aftertreatment unit 12 is a diesel catalytic oxidant (DOC), the second aftertreatment unit 22 is a diesel particulate filter (DPF), and the third aftertreatment unit 32 is a selective catalytic reduction (SCR).

[0029] Please refer to Figures 4 to 7 As shown, the exhaust aftertreatment housing 5 includes a cone 6 and a heat-insulating housing 7 that cooperates with the cone 6. In the embodiment illustrated in the present invention, the cone 6 is an intake cone, and the intake cone is provided with an air inlet 60. Please refer to... Figure 6 As shown, the cone 6 includes a first half-shell 61 (e.g., the left half-shell) and a second half-shell 62 (e.g., the right half-shell). The first half-shell 61 has two layers, comprising a first inner half-shell 611 and a first outer half-shell 612. The second half-shell 62 has two layers, comprising a second inner half-shell 621 and a second outer half-shell 622. Please refer to... Figure 5 and Figure 7 As shown, the welding joints on both sides of the first semi-inner shell 611 and the second semi-inner shell 621 form a first weld 613 and a second weld 614. The first semi-outer shell 612 and the second semi-outer shell 622 are also fixed together by welding.

[0030] Preferably, thermal insulation cotton can be filled in the space between the inner shell and the outer shell to reduce heat loss.

[0031] Please refer to Figure 5 As shown, the insulation shell 7 covers the first cylinder 11. Please refer to... Figures 6 to 9 As shown, the thermal insulation housing 7 has a first side edge 71 and a second side edge 72 opposite to the first side edge 71. The first side edge 71 has a first notch 711, a second notch 712, a third notch 713, and a fourth notch 714 spaced apart. The second side edge 72 has at least two clearance grooves 721 for avoiding the sensor seat. In the embodiment illustrated in the present invention, the sensor seat includes a first sensor seat 111 for mounting a temperature sensor and a second sensor seat 112 for mounting a pressure sensor.

[0032] Please refer to Figures 5 to 7As shown, when the cone 6 and the insulation shell 7 are engaged in the first position, the first weld 613 corresponds to the first notch 711, and the second weld 614 corresponds to the third notch 713; when the cone 6 and the insulation shell 7 are engaged in the second position, the first weld 613 corresponds to the second notch 712, and the second weld 614 corresponds to the fourth notch 714. By setting multiple notches, when the cone 6 and the insulation shell 7 are engaged in the first and second positions, different notches respectively engage with the welds of the cone 6, thereby achieving the feasibility of multi-angle engagement and meeting diverse installation requirements.

[0033] In the embodiment illustrated in the present invention, the first side edge 71 is provided with a first circumference, wherein the first notch 711, the second notch 712, the third notch 713, and the fourth notch 714 are distributed at intervals along the first circumference. The arc length between the first notch 711 and the third notch 712 is equal to the arc length between the second notch 712 and the fourth notch 714. The second side edge 72 is provided with a second circumference, and the number of clearance grooves 721 is greater than or equal to four, which are distributed at intervals along the second circumference; the first sensor seat 111 is disposed in one of the clearance grooves 721, and the second sensor seat 112 is disposed in another clearance groove 721. It should be noted that, since the first sensor seat 111 and the second sensor seat 112 have different installation angles under different applications, the multiple clearance grooves 721 provided in the present invention can cover various different installation angles of the first sensor seat 111 and the second sensor seat 112, that is, in any application, there can be clearance grooves 721 corresponding to the first sensor seat 111 and the second sensor seat 112. This design avoids the hassle of designing different insulation shells 7 for different installation positions of the first sensor base 111 and the second sensor base 112, thereby reducing costs. It should be noted that in the embodiment illustrated in the present invention, at any installation angle, only two clearance slots 721 can engage with the corresponding first sensor base 111 and second sensor base 112, while the remaining clearance slots 721 are empty at this specific installation angle, meaning they do not engage with any sensor base.

[0034] Please refer to Figure 7 As shown in the illustrated embodiment of the present invention, the heat-insulating shell 7 is composed of two parts, namely a first half-shell 73 and a second half-shell 74, which together form a cylindrical shape.

[0035] Please refer to Figure 4 and Figure 5As shown in the illustrated embodiment of the present invention, the first semi-inner shell 611 and the second semi-inner shell 621 are fixed to the inner side of the first side edge 71 of the thermal insulation shell 7; the first semi-outer shell 612 and the second semi-outer shell 622 are fixed to the outer side of the first side edge 71 of the thermal insulation shell 7. This arrangement facilitates assembly and welding.

[0036] In the embodiment illustrated in the present invention, the first semi-inner shell 611 and the second semi-inner shell 621 are provided with mutually cooperating flanges 615, and the first weld 613 and the second weld 614 are formed at the flanges 615.

[0037] Compared to existing technologies, this invention features multiple notches. When the cone 6 and the insulation shell 7 are engaged in the first and second positions, different notches engage with the cone 6, thus enabling multi-angle engagement and improving installation versatility. Furthermore, by providing multiple clearance grooves 721, the applicability to different installation positions of the first sensor base 111 and the second sensor base 112 is expanded, saving costs.

[0038] 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 those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. 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. A tail gas aftertreatment housing, comprising a cone and a heat-insulating housing cooperating with the cone, characterized in that: The cone is provided with a first weld and a second weld; the insulation shell is provided with a first side edge and a second side edge opposite to the first side edge, the first side edge is provided with a first notch, a second notch, a third notch and a fourth notch spaced apart, and the second side edge is provided with at least two clearance grooves for avoiding the sensor seat, wherein: When the cone is engaged with the insulation shell in the first position, the first weld corresponds to the first notch, and the second weld corresponds to the third notch; When the cone is engaged with the insulation shell in the second position, the first weld corresponds to the second notch, and the second weld corresponds to the fourth notch.

2. The exhaust gas aftertreatment housing as described in claim 1, characterized in that: The first side edge is provided with a first circumference, wherein the first notch, the second notch, the third notch and the fourth notch are distributed at intervals along the first circumference.

3. The exhaust gas aftertreatment housing as described in claim 2, characterized in that: The arc length between the first gap and the third gap is equal to the arc length between the second gap and the fourth gap.

4. The exhaust gas aftertreatment housing as described in claim 1, characterized in that: The cone includes a first half-shell and a second half-shell, wherein the first half-shell includes a first inner half-shell and a first outer half-shell, and the second half-shell includes a second inner half-shell and a second outer half-shell; the weld between the first inner half-shell and the second inner half-shell forms the first weld and the second weld.

5. The exhaust gas aftertreatment housing as described in claim 4, characterized in that: The first half of the inner shell and the second half of the inner shell are fixed to the inner side of the first side edge of the thermal insulation shell, and the first half of the outer shell and the second half of the outer shell are fixed to the outer side of the first side edge of the thermal insulation shell.

6. The exhaust gas aftertreatment housing as described in claim 5, characterized in that: The first half of the inner shell and the second half of the inner shell are provided with mutually cooperating flanges, and the first weld and the second weld are formed at the flanges.

7. The exhaust gas aftertreatment housing as described in claim 1, characterized in that: The cone is an air intake cone, and the air intake cone is provided with an air intake port.

8. The exhaust gas aftertreatment housing as described in claim 1, characterized in that: The second side edge is provided with a second circumference, and the number of the clearance grooves is greater than or equal to four. These clearance grooves are distributed at intervals along the second circumference. The sensor seat includes a first sensor seat for mounting a temperature sensor and a second sensor seat for mounting a pressure sensor. The first sensor seat is disposed in one of the clearance grooves, and the second sensor seat is disposed in the other clearance groove.

9. A tail gas aftertreatment package, comprising a first cylindrical body, a first aftertreatment unit packaged within the first cylindrical body, a second cylindrical body aligned with the first cylindrical body, a second aftertreatment unit packaged within the second cylindrical body, a third cylindrical body arranged side-by-side with the first cylindrical body and the second cylindrical body, a third aftertreatment unit packaged within the third cylindrical body, and a connecting shell connecting the second cylindrical body and the third cylindrical body, characterized in that, The exhaust aftertreatment package further includes an exhaust aftertreatment housing as described in any one of claims 1 to 8, wherein the heat-insulating housing covers the first cylinder.

10. The exhaust gas aftertreatment packaging as described in claim 9, characterized in that: The exhaust aftertreatment package is generally U-shaped. The first aftertreatment unit is a diesel catalytic oxidant (DOC), the second aftertreatment unit is a diesel particulate filter (DPF), and the third aftertreatment unit is a selective catalytic reduction agent (SCR).

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