| 摘要 |
PROBLEM TO BE SOLVED: To smoothly discharge any one of wastewater from a bathtub, wastewater from a floor pan for the bathtub, and wastewater from a floor pan for a washing place by reducing pressure loss, and to prevent the wastewater from flowing back onto the floor pan for the bathtub and the floor pan for the washing place, when the wastewater is discharged in large quantities from the bathtub. SOLUTION: This drainage structure comprises: a bathtub drain trap part 2 into which the wastewater from the bathtub 1 flows; a drain trap part 4 for a bathtub floor pan, into which the wastewater from the bathtub floor pan 3 for installing the bathtub 1 flows; and a washing-place drain trap part 6 into which the wastewater from a washing-place floor pan 5 flows. A first drain passage 7, through which the wastewater discharged from the trap part 2 flows, a second drain passage 8, through which the wastewater discharged from the trap part 4 flows, and a third drain passage 9, through which the wastewater discharged from the trap part 6 flows, are merged with one another by a merging part 10, so that the wastewater can be discharged through a common drain pipe 11. Sections, leading to the merging part 10, of the drain passages 7, 8 and 9 are juxtaposed in a horizontal direction. COPYRIGHT: (C)2008,JPO&INPIT
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