| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water tank for appreciation which can effectively suppress a reduction of a fluid stored in a water tank body and can dramatically reduce the frequency of maintenance. <P>SOLUTION: The water tank for appreciation 10 includes the water tank body 11 and a gas supply device 12 which supplies the air into the water of the water tank body 11. An air pump 31 of the gas supply device 12 jets the air from a nozzle 36 provided in a lower part of the water tank body 11. The air moving up in the water tank and emitted into an upper space C is returned to the air pump 31 through a gas return passage 35 and introduced into a gas supply passage 33 again to circulate. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
