| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water heating device enabling individual operation of each of two radiators having different heating temperatures individually. SOLUTION: The hot water heating device includes an intermediate-temperature temperature control valve 10 mixing a high-temperature heating medium from a circulation amount control means 7 with part of a return heating medium returned from a high-temperature radiator 2 to heating return piping 5, part of a return heating medium returned from an intermediate-temperature radiator 3 to the heating return piping 5 or part of a mixed heating medium of the return heating medium returned from the high-temperature radiator 2 to the heating return piping 5 and the return heating medium returned from the intermediate-temperature radiator 3 to the heating return piping 5 and supplying the mixture to the intermediate-temperature radiator 3 as a predetermined intermediate-temperature heating medium. A heating circulating pump 15 is provided between a connection portion of high-temperature return piping 12 in the middle of intermediate-temperature return piping 13 and a branched portion of temperature control piping 14 from the intermediate-temperature return piping 13 toward the intermediate-temperature temperature control valve 10. Thus, excellent heating can be obtained. COPYRIGHT: (C)2011,JPO&INPIT
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