| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a warm air heater which accurately detects incomplete combustion of a burner. <P>SOLUTION: The warm air heater is provided with: the burner 11; a fan 13 sucking in air from a suction opening 15, and sending out mixed gas c of air sucked in from the suction opening 15 and combustion exhaust gas of the burner 11 from a warm air blowout opening 12; an electrochemical type CO sensor 18 provided in a sending path X for the mixed gas c to output an electric current proportional to a concentration of carbon monoxide in the mixed gas c by an oxidation/reduction reaction with the carbon monoxide in the mixed gas c; an introduction passage Y introducing the air sucked in from the suction opening 15 to an installation position vicinity of the electrochemical type CO sensor 18 of a bulkhead 30; and a combustion state detecting means for detecting a combustion state of the burner 11 on the basis of the output current of the electrochemical type CO sensor 18. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
