| 摘要 |
PROBLEM TO BE SOLVED: To provide a large-sized bathtub for a public bathhouse or the like which can prevent the contamination by legionella bacteria from occurring by a simple method. SOLUTION: For a plate coil type heating device, a plurality of thin and long heat insulating members are arranged at proper intervals at least on one side surface. The plate coil type heating device is installed on a side surface of a bathtub in such a manner that the longitudinal direction of the member may become approximately perpendicular to the plane of the bathtub for this large-sized bathtub to solve the problem. COPYRIGHT: (C)2004,JPO&NCIPI
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