Silencer clapboard and silencer

Abstract

The invention provides a silencer clapboard and a silencer. At least three lug bosses are arranged on the outer edge of the clapboard, and the clapboard is provided with an air inlet pipe hole, an air outlet pipe hole and air venting holes and is connected trough the in an interference fit and contact between the lug bosses and the shell. The silencer comprises the shell and the clapboard, wherein the at least three lug bosses are arranged on the outer edge of the silence clapboard, the lug bosses are in interference fit and contact with the inner wall of the shell, and a gap is formed between a part, except for the lug bosses, on the outer edge of the clapboard and the shell. According to the silencer clapboard and the silencer, the gap is reserved between the part, except for the lug bosses, on the outer edge of the clapboard and the shell, the harsh whistler generated when air passes through the small gap between the clapboard and the shell is avoided, the excellent sound proofing property is ensured, so that the manufacturing yield is high, and the product quality is stable; and the silencer clapboard is suitable for various silencers with clapboards.

Description

technical field [0001] The invention relates to the field of automobile exhaust muffler systems, in particular to a muffler partition and a muffler. Background technique [0002] The existing muffler structure with a partition generally uses a partition that is in full contact with the inner wall, that is, a partition that completely matches the cross section of the shell is selected, and the partition is completed by interference fit with the shell, or by resistance welding. Assembly of partition and shell. [0003] Because the partition is in contact with the entire periphery of the shell, even through interference fit or resistance welding, due to manufacturing factors or use loss, there will still be small and slender gaps in some places. When the high-speed gas passes through the gap through the airflow Turbulent flow will be generated, which will generate harsh howling sound, which not only affects the noise reduction performance, but also increases the source of nois...

AI Technical Summary

Problems solved by technology

[0003] Because the partition is in contact with the entire periphery of the shell, even through interference fit or resistance welding, due to manufacturing factors or use loss, there will still be small and slender gaps in some places. When the high-speed gas passes through the gap through the airflow Turbulent flow will be generated, which will generate harsh howling sound, which not only affects the noise reduction performance, but also increases the source of noise

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