| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat source device configured to perform freezing prevention of a drain neutralizer provided in the heat source device even without an electric heater, and thereby to reduce the cost.SOLUTION: In a cistern tank 100 provided in a liquid circulation passage having a circulation function for heated liquid, a liquid storage chamber 2 for storing liquid passing in the liquid circulation passage and a drain neutralizer 76 for neutralizing drain produced in a latent heat recovery heat exchanger are partitioned and provided, and the drain neutralizer 76 and the cistern tank 100 are formed as an integrated unit 12. The integrated unit 12 is provided with an overflow chamber 4 for liquid having overflown from the liquid storage chamber 2, and is configured such that a drain having passed through the drain neutralizer 76 flows into the overflow chamber 4, and the liquid and drain are discharged from a liquid discharge part 9. Between the drain neutralizer 76 and the liquid storage chamber 2, a spacing 3 is provided for preventing direct transmission of heat from liquid in the liquid storage chamber 2 to the drain in the drain neutralizer 76. |
