| 摘要 |
WARM-AIR HEATER Abstract A warm-air heater comprises a casing (10) having air supply port (15) and a 5 blowing-out port (13), a combustion chamber (2) having a gas burner, an air blowing fan (3), a ventilation case (4) having a mixed gas passage (46) in which a mixed gas of air sucked into the casing (10) through the air supply port (15) by the operation of the air blowing fan (3) and combustion exhaust gas from the gas burner, an air chamber (5) defined alongside the ventilation case (4) and a thermocouple (6). The ventilation case (4) io has an air introducing opening (47) that is formed at a position opposite to a thermocouple (6) and introduces air inside the air chamber (5) into the mixed gas passage (46). A protective cover (91, 92) located inside the mixed gas passage (46) to inhibit warm air from blowing directly against the thermocouple (6). ------------- -- ---------- - L- 45 -1 c------------ ------- --------- ---- -- --- 221 47--------------,- e---------- -- ---- - - 51 21 F ---- - ----- 5 4----~L .----- 7 23--- --- c r~~ _.------25 |
