| 摘要 |
PURPOSE:To provide a hot water heater device in which a heat exchanger can be formed by some fine pipes and a combustion in a burner is not frequently stopped by a method wherein the heat exchanger for heating hot water in a circulation system and side pipes branched from the circulation system bypassing the heat exchanger are provided. CONSTITUTION:A part of hot water to be supplied from a hot water tank 2 to a hot water supplying pipe 3 through a heat exchanger 4 passes through a side pipe 11 to bypass a heat exchanger 4, an entire flow rate of hot water is increased while a flow rate of hot water passing through the heat exchanger 4 is low. Even if a flow rate of hot water passing through the heat exchanger 4 is low, an amount of conducted heat is not varied so much, resulting in that a temperature of the hot water within the hot water pipe 3 after merging of hot water at the side pipe 11 is not varied. Therefore, it is possible to circulate a large amount of hot water by utilizing the heat exchanger 4 having some fine pipes. A flow rate adjustor valve 12 is provided with the side pipe 11, an outlet temperature at the heat exchanger 4 is detected by a temperature sensor 13 and so if a flow rate in the side pipe 11 is varied, a flow rate of hot water passing through the heat exchanger 4 is also varied, resulting in that the outlet temperature of the heat exchanger 4 can be varied, a continuous combustion can be performed without boiling or overheating and the like and so it is not necessary to make a frequent termination of combustion in the burner 6. |
