| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve problems in a conventional device, and to easily supply air having suitable oxygen concentration into a vehicle at a low cost. <P>SOLUTION: This air purifying device comprises an air filter for removing foreign matters from sucked air, a vacuum pump means for exerting an air suction force, an adsorbing head having an adsorbent for adsorbing nitrogen from the sucked air, a bypass flow channel capable of passing the air of oxygen atmosphere having passed through the adsorbing head, a pump means for discharging the air of oxygen atmosphere from the adsorbing head, a check valve for making the air of oxygen atmosphere flow only into the pump means, a valve means for switching between a vacuum pressure and an atmospheric pressure between the adsorbing head and the vacuum pump means and between the adsorbing head and the air filter, and a pump means for supplying the air of oxygen atmosphere into a cabin. <P>COPYRIGHT: (C)2003,JPO</p> |
