Abstract: In the inside of a main body case 4, a motor 10 and a pump 11 are contained. To the pump 11, a suction pipe 12 and an outlet pipe 14 are connected. Jet nozzles 17 are coupled to a portion of the outlet pipe 14. The tip portion of the suction pipe 12 is submerged in the hot water 13 of a bathtub 3 so that the hot water 13 is sucked up by the suction power of the pump 11. The hot water thus sucked up is sent out from an outlet of the pump 12 into the outlet pipe 14 so that it shoots out as jet currents from the jet nozzles 17 to the surface of the hot water 13. At this time, countless air bubbles are generated in the hot water 13 and when they are bursted, ultrasonic wave is generated to bring about various healthfull effects. The above stated components are all installed in a bathroom 2.

Abstract: A pump 120 contained in a first case 9 sucks hot water 13 in a bathtub 1 through an inlet 12 and pushes the hot water 13 upward through an outlet pipe 14 above the water surface 16. The outlet pipe 14 is coupled to jet nozzles 15, so that the hot water is shot out from the jet nozzles 15 toward the water surface 16. At this time, countless air bubbles are generated in the hot water. The first case 9 and the second case 20 together with the pump 10, a motor 11, the outlet pipe 14, the jet nozzles 15 etc. contained in these cases are installed integrally as a unitary body which is transportable.