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Baffle of exhaust silencer

An exhaust muffler and flanging technology, used in exhaust devices, mufflers, machines/engines, etc., can solve problems such as large distortion and product failure, and achieve the effect of reducing constraints and eliminating weld cracking.

Pending Publication Date: 2021-12-03
SHANGHAI TENNECO EXHAUST SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the weld between the core tube and the baffle 100' cracks, the inconsistency between the thermal deformation of the through-hole area of ​​the baffle 100' and the flange part 2' will become larger and larger, and eventually a large distortion will occur, resulting in product failure

Method used

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  • Baffle of exhaust silencer
  • Baffle of exhaust silencer
  • Baffle of exhaust silencer

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Please refer to Figure 3 to Figure 6 As shown, the present invention discloses a baffle 100 for an exhaust muffler, which includes a vertical main body 1 and a flanged area 2 bent from the outer edge of the main body 1 .

[0018] The main body 1 is provided with a through hole 11 at its center, and the through hole 11 is used for installing a core tube (not shown). The main body 11 is also provided with a plurality of sound-absorbing holes 12 distributed on the outer periphery of the through hole 11 .

[0019] The flanged area 2 includes a first flanged portion 21 and a second flanged portion 22 bent inwardly from the outer edge of the first flanged portion 21 . The first flange portion 21 is arranged obliquely relative to the horizontal direction H, and an angle α is formed between the first flange portion 21 and the horizontal direction H, and 2°≤α≤2.5°. Compared with right-angle flanging, the included angle α of the first flanging portion 21 of the present inventi...

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Abstract

A baffle of an exhaust silencer comprises a vertical body part and a flanging area formed by bending the outer edge of the body part. The flanging area comprises a first flanging part obliquely arranged relative to the horizontal direction. The flanging area is further provided with a second flanging part formed by bending the outer edge of the first flanging part inwards, and the outer surface of the second flanging part is in a fillet corner shape. Compared with the prior art, line contact instead of surface contact can be formed between the first flanging part and the inner wall of the shell; in addition, the fillet corner on the outer surface of the second flanging part can be in smooth contact with the inner wall of the shell instead of sharp corner contact; and through the arrangement, the constraint of the inner wall of the shell on the deformation of the baffle is reduced, so that the deformation of the flanging area of the baffle is approximately consistent with that of other areas, and the condition that a welding seam between the baffle and a core tube is cracked is eliminated.

Description

technical field [0001] The invention relates to a baffle plate of an exhaust muffler, belonging to the technical field of exhaust systems. Background technique [0002] Please refer to figure 1 and figure 2 As shown, the baffle plate 100' of the exhaust muffler in the related art usually includes a vertical main body 1' and a flange part 2' vertically bent from the outer edge of the main body 1', that is, the flange part 2 The angle between ' and the main body part 1' is 90°. The main body 1' is provided with a through hole 11' in the middle and a sound-absorbing hole 12' surrounding the through hole 11', and the through hole 11' is used for welding with the core tube. [0003] When assembling, the baffle plate 100' is inserted into the housing, so that the flange portion 2' is in surface contact with the inner wall of the housing. During use, under the action of high-temperature exhaust, the core tube will be thermally deformed; the through-hole area of ​​the baffle 10...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/08F01N13/18F01N13/00
CPCF01N1/082F01N13/1838F01N13/00
Inventor 孔德智石宇航
Owner SHANGHAI TENNECO EXHAUST SYST
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