| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water heater that predicts a possible time for starting a heat recovery operation from a bathing pattern of a user and automatically starts the heat recovery operation, thus improving the usability. <P>SOLUTION: The water heater includes: a hot water storage tank 1, a bathtub 3, a heat exchanger 4 for exchanging heat between hot water in the hot water storage tank 1 and hot water in the bathtub 3, a consumed heat amount measuring unit 50 for measuring an amount of consumed heat; a consumed heat amount memory 52 for storing the amount of consumed heat measured; and a control unit 18. The water heater predicts a bathing finish time from information of the consumed heat amount stored in the consumed heat amount memory 52, and starts a hear recovery operation at the bathing finish time for transferring the heat of the hot water in the bathtub 3 to the hot water in the hot water storage tank 1 through the heat exchanger 4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
