| 摘要 |
PROBLEM TO BE SOLVED: To allow soot in a drain channel for condensate water in a combustion device to easily flow out with liquid such as the condensate water.SOLUTION: A water heater 100 has a condensate water drain part 50 for draining condensate water generated during heat exchange. The condensate water is sent to a neutralizer 60 through a drain channel 52 and a drain chamber 53 in the condensate water drain part 50 and then subjected to neutralization treatment. The drain chamber 53 is provided in a section of the drain channel 52 to constitute a part of the drain channel 52 and shaped to have a larger cross sectional area than the drain channel 52. In the water heater 100, the drain channel 52, the drain chamber 53, and the neutralizer 60 form a water sealing part 80 for reserving liquid in the drain channel 52 and the drain chamber 53. The drain chamber 53 is provided in a section having a water seal surface 81 in the water sealing part 80. Thus soot floating on the water seal surface and the liquid in the drain chamber 53 are agitated by a fluctuating pressure caused by combustion gas to easily get mixed up with the liquid. |
