WATER HEATER

PROBLEM TO BE SOLVED: To provide a water heater that measures temperature of a combustion exhaust gas from which sensible heat is recovered to reliably determine if scale is clogged.SOLUTION: The water heater includes: a fin-and-tube-type heat exchanger for heating clean water by a combustion gas; t...

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Bibliographische Detailangaben
Hauptverfasser:	KINUGASA TOMOFUMI, ISHIZUMI MASAMITSU, DOYAMA MASATO, KUSAKABE MAKOTO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL HEATING LIGHTING MECHANICAL ENGINEERING RANGES REGULATING OR CONTROLLING COMBUSTION VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a water heater that measures temperature of a combustion exhaust gas from which sensible heat is recovered to reliably determine if scale is clogged.SOLUTION: The water heater includes: a fin-and-tube-type heat exchanger for heating clean water by a combustion gas; temperature detection means for detecting exhaust gas temperature of which heat has been exchanged by the heat exchanger; and determination means for determining that scale is deposited inside a heat transfer pipe of the heat exchanger when detection temperature detected by the temperature detection means is equal to or higher than preset temperature.SELECTED DRAWING: Figure 1 【課題】顕熱が回収された燃焼排ガスの温度を測定することによりスケール詰まりを確実に判定可能な給湯装置を提供すること。【解決手段】給湯装置は、燃焼ガスによって上水を加熱するためのフィンアンドチューブ型熱交換器を備え、前記熱交換器において熱交換された後の排気温度を検知するための温度検知手段と、この温度検知手段によって検知される検知温度が設定温度以上になった場合に前記熱交換器の伝熱管内にスケールが堆積していると判定する判定手段とを備えている。【選択図】図１