Intake and Exhaust Method and A Structure Utilizing the Same
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United States of America Patent
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Issued Date -
Nov 29, 2012
app pub date -
Aug 8, 2011
filing date -
May 24, 2011
priority date (Note) -
Abandoned
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Abstract
An intake and exhaust structure includes an outer duct, an inner duct and an air-guiding cover. The outer duct has a first end and a second end. The inner duct has a first end, a second end and an intake air channel. The inner duct is disposed in the outer duct, and a circular air channel is defined between the inner and outer ducts. The air-guiding cover has an inner wall and an air inlet at two ends thereof, wherein the inner wall is coupled with the second end of the inner duct.
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