| 摘要 |
PURPOSE:To enable effective utilization of drain water by a construction wherein the drain water discharged from a drain water discharge hole of a cooler is led into an introducing part from a drain water receiving port of a water tank by a connecting pipe such as a vinyl chloride pipe and collected in a holding part through an inflow port in the lower part. CONSTITUTION:A water tank 1 has an introducing part 2, a holding part 3 and a discharge part 4. A drain water receiving port 2a is formed in the upper part of the introducing part 2, while an inflow port 2b is formed in the lower part of a first partition wall 2c forming the boundary between the introducing part 2 and the holding part 3. An overflow discharge port 4a is formed in the upper part of a second partition wall 4c forming the boundary between the holding part 3 and the discharge part 4, while a drain port 4b is formed in the lower part of the discharge part 4, and one end of a connecting pipe of which the other end is connected with a drain water discharge hole is inserted into and fixed to the introducing part 2. By this constitution, drain water is collected in the holding part 3 of the water tank 1 and utilized effectively. Freshwater fish and water grass are kept in the water tank 1 wherein the drain water being harmless water is collected, which gives peace of mind to a viewer. |
