| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent overheating and boiling-up in the other water pipe at a non-operation side in performing a single operation for supplying the hot water or a single operation for heating. <P>SOLUTION: This gas combustion room heater and water heater comprises a primary heat exchanger 1 where a water pipe 1a for heating a hot water supply circuit and a water pipe 1b for heating a heating circuit are composed of a single water circulation flow channel pipe in a heat exchanger of one can body, a primary hot water circulating passage forming a closed circuit by being connected from an outlet of the single water circulation flow channel pipe to an inlet of the single water circulation flow channel pipe through a secondary heat exchanger for heating 15, a tapping flow channel 3 branched from the single water circulation flow channel and provided with a taking-out port for supplying the hot water, a burner 4 for heating the primary heat exchanger 1, and a combustion fan 32, and performs the hot water supplying operation using the tapping flow channel 3, the heating operation using the secondary heat exchanger 15 or a simultaneous operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
