HOT AIR HEATER

PROBLEM TO BE SOLVED: To protect a thermocouple from hot air by a protective cover, and to accurately perform fire detection for cooling a cold junction of the thermocouple by room air. SOLUTION: A hot air heater includes in a casing 10 having air supply ports 15 and 16 and an air outlet 13: a combu...

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Bibliographic Details
Main Authors NAKAMURA KATSUTOSHI, KUBOTA HIKARI, ITO KEIICHI
Format Patent
LanguageEnglish
Published 30.06.2011
Subjects
BLASTING
FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL
HEATING
LIGHTING
MECHANICAL ENGINEERING
RANGES
VENTILATING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To protect a thermocouple from hot air by a protective cover, and to accurately perform fire detection for cooling a cold junction of the thermocouple by room air. SOLUTION: A hot air heater includes in a casing 10 having air supply ports 15 and 16 and an air outlet 13: a combustion chamber 2 of a gas burner; a blast fan 3; a ventilation case 4 wherein a mixed gas passage 46, through which a mixed gas of air taken inside the casing from the air supply ports by operation of the blast fan 3 and a combustion emission gas flows, is formed; an air chamber 5 formed to be sectioned on the lateral side of the ventilation case 4; and the thermocouple 6. In the ventilation case 4, an air introduction opening part 47 for introducing air inside the air chamber 5 into the mixed gas passage 46 to cool the thermocouple 6 is provided in the position facing the thermocouple 6. Protective covers 91 and 92 protecting the thermocouple 6 from hot air are arranged inside the mixed gas passage 46. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090283648