| 摘要 |
PROBLEM TO BE SOLVED: To provide a water consumption calculation device capable of calculating the water consumption without being influenced by fluctuation of water pressure, and a water purifier. SOLUTION: This water consumption calculation device 5 is constituted of at least a cylindrical magnetic body 12 moved in a water passage by fluctuation of the pressure of water flowing in the water passage, an electromagnetic coil 14 constituting an LC resonance circuit for changing a resonance frequency by movement of the magnetic body 12, a spring body 15 for regulating movement of the magnetic body, a microprocessor 16 for calculating the water consumption based on the resonance frequency acquired by the LC resonance circuit, and a power source of the microprocessor 16. COPYRIGHT: (C)2007,JPO&INPIT
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