| 摘要 |
PROBLEM TO BE SOLVED: To provide a suction cover structure for a drain pump, having simple construction for securing stable operation by actualizing the suction of water from a water storage tank having a large bottom area down to its sufficiently low level while suppressing the occurrence of air suction swirl. SOLUTION: The suction cover structure for the drain pump 6 is installed in the water storage tank 3 with an axis P in a horizontal attitude, connected its base end to a suction port 6A of the drain pump 6 which delivers water stored in the water storage tank 3 to the outside, and provided with opening portions 7C in the peripheral wall, from which the water is sucked by the drain pump 6. A suction cover 7 has the opening portions 7C whose areas are each smaller than the minimum cross section area of the suction port 6A and whose gross area is larger than the minimum cross section area. COPYRIGHT: (C)2005,JPO&NCIPI
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