Muffler and silencer way based on sound ray deflection theory

摘要

【Task】 The present invention provides a muffling method based on the sound beam deflection theory. A The method is to form a temperature gradient inside and outside the silencer main body by utilizing a cryogenic cooling system, the wall temperature inside of the muffler main body is higher than Kabegai temperature. It said since the temperature gradient is to be deflected in the direction of the low temperature the sound line of noise, reduce to catch the noise of the system. Further, the present invention provides a muffler that is based on the sound beam deflection theory, comprises a muffler shell. Said the inner wall of the muffler shell (1) are laid sound absorbing structure (4). Wherein the outer wall of the muffler shell (1) in correspondence with the sound absorbing structure (4) Place the cryogenic cooling system (2), 5% of the outer wall area of ​​the low temperature cooling system (2) at least muffler shell (1) should the cover. The cryogenic cooling system (2) is to achieve a quantitative control of the temperature gradient in connection with the temperature control device (3). The present invention is to effectively improve the noise absorption effect of the existing silencer. .FIELD 1