REHEATING METHOD AND DEVICE IN DIRECT-FIRING TYPE WATER-HEATER

摘要

PURPOSE: To provide a method and a device which are capable of reheating supplied hot-water without complicating the constitution of the device and without accompanying any heat loss while obtaining high-temperature hot-water efficiently. CONSTITUTION: Hot-water is obtained through direct-heat exchange between hot gas 10 of combustion of a burner which is going up in flame from a combustion chamber 6 toward a heat-absorbing chamber 2 and water which flows down from a water sprayer 4 toward the combustion chamber 6 through a heat absorbing chamber 2. The obtained hot-water is sucked from the hot-water supplying port 12 of the combustion chamber 6 together with the hot gas of combustion in the combustion chamber 6 by a gas and liquid suction pump 17 to supply them while reheating during supplying by mixing the hot gas of combustion into the hot-water. The heat absorbing chamber 2 is provided with a pressure reducing port 24 equipped with an exhaust port 19 and a freely openable lid body 27.