| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a "carbonated spring generator using a two-shaft positive displacement rotary pump" with a simple structure, by which a carbonated spring can stably and easily be obtained. <P>SOLUTION: In the carbonated spring generator including a water tank for storing the carbonated spring, a pump unit for sending hot water through a circulating path to the water tank, and a carbon dioxide gas cylinder, the pump unit P comprises a roots pump 3 in which a pair of root rotors 26 stored in a pump casing 4 with a suction port and a discharge port are rotary-driven by a driving motor, and a carbon dioxide introducing tube 51 which leads carbon dioxide supplied from the carbon dioxide gas cylinder 61 to the suction port side. The hot water is sucked in from the water tank 70 by operation of the roots pump 3 while bubbles of the carbon dioxide taken in from the carbon dioxide introducing tube 51 is made fine by compression action of the pump 3, and the hot water containing the fine bubbles of the carbon dioxide is discharged into the water tank 70. <P>COPYRIGHT: (C)2012,JPO&INPIT |
