PURPOSE: To provide an automatic cleaning device for bathtub that can be installed with a simple work and in a low cost.
CONSTITUTION: A cleaning nozzle 3 is installed to a bathtub 1, and in a heat source unit 6 that is separately provided a heat exchanger 7 for supply hot water, heat exchanger 8 for additional combustion, cleaning agent tank 9, circulation pump 10, and controller 11 are assembled and, at the same time, the outlet side 8b of the heat exchanger 8 for additional combustion and the cleaning nozzle 3 are connected by an outgoing pipe 12, and a drain water port 2 and the inlet side 8a of the heat exchanger 8 for additional combustion are connected by a return pipe 13. With this arrangement, the installation work is only to install the cleaning nozzle 3 to the bathtub 1 and connect the cleaning nozzle 3 and the drain water port 2 and heat source unit 6 by the outgoing pipe 12 and return pipe 13 so that the installation work is simple, and since the main devices are assembled into the heat source unit 6, the installation and maintenance are simple.
SUMIDA KAZUHIRO
HAYASHI HITOSHI
