| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonpolar type circulation tool for a bathtub capable of suppressing a temperature difference in bathtub water in the bathtub during reheating, and capable of efficiently raising a temperature of the bathtub water. SOLUTION: A discharge side first check valve 47 allowing a flow of the bathtub water from a first connection part to a discharge opening side, and regulating a flow in the opposite direction is provided on a passage communicating the first connection part with a discharge opening. A discharge side second check valve 48 allowing a flow of the bathtub water from a second connection part to the discharge opening, and regulating a flow in the opposite direction is provided on a passage communicating the second connection part with the discharge opening. Both check valves 47 and 48 are ball type check valves, and both check valves 47 and 48 are provided adjacent to each other in a state of balls 50 carrying out opening and closing action in a vertical direction. The discharge opening is opened facing directly down. COPYRIGHT: (C)2006,JPO&NCIPI
|
