| 专利名称 | Acoustic attenuation method based on acoustic ray deflection theory and a muffler | 申请号 | US201013203699 | 专利类型 | US | 公开（公告）号 | US8408359(B2) | 公开（授权）日 | 2013.04.02 | 申请（专利权）人 | 中国科学院声学研究所 | 发明（设计）人 | LU YADONGLIU DONGWANG QIAN | 主分类号 | F01N1/10 | IPC主分类号 | F01N1/10 | 专利有效期 | Acoustic attenuation method based on acoustic ray deflection theory and a muffler 至Acoustic attenuation method based on acoustic ray deflection theory and a muffler | 法律状态 | 说明书摘要 | The present invention provides an acoustic attenuation based on sound ray deflection theory and a muffler. The method of the present invention provides a temperature gradient between the interior and the exterior of the chamber of the muffler through the low temperature refrigeration system, in which the temperature inside the pipe wall is higher than that outside the pipe wall. The said temperature gradient may deflect the acoustic ray towards the low temperature direction, so as to capture and reduce the noise. The muffler of the present invention comprises a muffler housing laid with a sound absorbing structure (4) on its internal surface, is characterized by the low temperature refrigerating system (2) which is fixed in the position corresponding to the sound absorbing structure (4) on the external surface of the muffler housing (1), covers at least 5% of the area of the external surface of muffler housing (1), and is used to realize quantitative control of the temperature gradient together with a temperature control system (3). The muffler of the present invention effectively improves the noise-absorbing effect of the prior muffler. |
1、源头对接，价格透明
2、平台验证，实名审核
3、合同监控，代办手续
4、专员跟进，交易保障