Robert T. Cruz,Richard L. Eyer,Marko Konstantin Lubic,Christopher Kamery
申请号：
US14272245
公开号：
US09949471B2
申请日:
2014.05.07
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A vented combustion chamber for an insect attractant engine is provided for a flying insect trapping device of the type that relies upon combustion of a fuel to generate a flow of carbon dioxide to attract flying insects. The combustion chamber, which is generally tubular and horizontally oriented in operation, is vented through a hole formed in one side of the chamber wall that extends from the outer surface of the chamber into the interior thereof. During operation of the device, this through-hole allows gas inside the chamber to be vented to the outside, changing the effective length of the combustion chamber for the purposes of wave generation is changed so that creation of a resonance cycle or standing wave, and the resulting acoustic phenomenon of howling, is prevented.
