| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot-water generator capable of efficiently recovering heat of high-temperature exhaust gas by a heat exchanger for latent heat recovery by installing a latent heat recovery unit including the heat exchanger for latent heat recovery. <P>SOLUTION: The latent heat recovery unit can be mounted to a water heater including a hot-water generator body storing heating medium water, a combustion chamber warming the heating medium water within the hot-water generator body and a secondary side circulation passage circulating secondary hot water which has undergone heat exchange with the heating medium water stored in the hot-water generator body. A flue construct enabling connection and communication with the combustion chamber and discharging exhaust gas discharged from the combustion chamber to outside, a primary side circulation passage constituted independently of the secondary side circulation passage and circulating the heating medium water, the heat exchanger for latent heat recovery exchanging heat between the exhaust gas discharged from the combustion chamber and made to pass through inside of the flue construct and the heating medium water in the primary side circulation passage to recover latent heat of the exhaust gas and an indirect heat exchanger exchanging heat between the heating medium water circulated in the primary side circulation passage and the secondary hot water circulated in the secondary side circulation passage are stored and arranged in a predetermined casing. <P>COPYRIGHT: (C)2011,JPO&INPIT |
