| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water discharge device capable of giving a sufficiently great flow rate variation to discharged water without using a large pump, to form sufficiently large water masses in spite of a short water discharging-landing distance. <P>SOLUTION: The water discharge device includes bubble supply means having an air introduction port 10a for introducing air into a water reservoir part to produce bubbles formed by bubbling air introduced from the air introduction port 10a and intermittently supply the bubbles into a water passage part 105. The bubble supply means changes the stream of a swirl flow WSs formed in the water reservoir part 106 with an injection flow WSm to create a state of introducing the air from the air introduction port 10a and a state of stopping the introduction of the air from the air introduction port 10a, alternately. <P>COPYRIGHT: (C)2013,JPO&INPIT |
