| 摘要 |
PURPOSE: A storage tank is provided to easily wash the storage tank by installing a contact type sensor at a first tank and to easily separate a second tank if the second tank is descends according to the amount of fluid in the second tank. CONSTITUTION: A storage tank includes a first tank(200), a second tank(300), a sensor(400), an elastic member(500), and a water leakage sensor(600). The second tank is movably arranged at the first tank. Fluid is introduced into the second tank and is discharged from the second tank. The sensor is arranged at the lower part of the first tank. If a pre-set amount of fluid is stored in the second tank and the second tank descends, the sensor operates by being contacted with the second tank. The elastic member is arranged at the lower part of the first tank and elastically supports the second tank. The water leakage sensor is arranged at the lower part of the first tank and the second tank.
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