| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a deep aeration device, which exhausts surplus air efficiently, without causing such a problem that a hose is exposed to water surface, without being entwined with the hose of an exhauster, in simple construction. <P>SOLUTION: This deep aeration device is equipped with a device body, which is immersed in water, and can stand by itself, and an exhaust pipe, which is provided in this device body to discharge air within the device body. It is equipped with one or more passages which connect the upper part of the device body with outside of the device body, and one end of this passage faces an air layer in the upper part of the device body, and the other end is provided in a position which is lower than the reversed water surface in usual use. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
