| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a conventional ventilating device does not suck important air such as a stench but sucks unnecessary air such as room air and combustion air, keeps the room filled with the vital air, has no other way than enhancing the capability of a ventilating fan and increasing the size of a range hood in order to improve the problem, and used to invite the loss of energy and a rise in prices because the device becomes large-scaled. <P>SOLUTION: An important stench source having an expansive force=draft force expanded after being heated is covered with a lid with duct, and the top end of the duct is projected outside to exhausted the stench outside with the expansive force or partially with the draft force having ventilating fan or chimney effects. <P>COPYRIGHT: (C)2013,JPO&INPIT |
