US 12,322,364 B1
Noise reduction gas path structure, gas path device and respirator
Jun Ke, Guangdong (CN); Xu Li, Guangdong (CN); Shuiqi Zou, Guangdong (CN); and Tao Wang, Guangdong (CN)
Assigned to SHENZHEN YAMIND MEDICAL TECHNOLOGY CO., LTD., Guangdong (CN)
Filed by SHENZHEN YAMIND MEDICAL TECHNOLOGY CO., LTD., Guangdong (CN)
Filed on Dec. 5, 2024, as Appl. No. 18/969,351.
Application 18/969,351 is a continuation of application No. PCT/CN2024/121256, filed on Sep. 26, 2024.
Int. Cl. G10K 11/162 (2006.01); A61M 16/00 (2006.01); G10K 11/172 (2006.01)
CPC G10K 11/162 (2013.01) [A61M 16/0003 (2014.02); A61M 16/0066 (2013.01); G10K 11/172 (2013.01); A61M 2205/42 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A noise reduction gas path structure, comprising:
a gas path chamber;
an acoustically transparent and anti-aeration element in the gas path chamber, wherein the acoustically transparent and anti-aeration element is configured to divide the gas path chamber into a gas flow portion and a sound-absorbing portion; and
a sound-absorbing filler in the sound-absorbing portion, the sound-absorbing filler is configured to absorb sound entering the sound-absorbing portion from the gas flow portion through the acoustically transparent and anti-aeration element,
wherein the acoustically transparent and anti-aeration element is made of an elastic material to vibrate the acoustically transparent and anti-aeration element due to the sound, and
wherein a resonance gap is formed between the sound-absorbing filler and the acoustically transparent and anti-aeration element.