| 摘要 |
PURPOSE:To prevent cool air from blowing out upon extreme low temperature condition in a combustion type rapid heating heater, device, by detecting the temperature of a heat-exchanger, and by controlling a shutter for opening and closing an air feed duct in accordance with a detected temperature. CONSTITUTION:A heat-exchanger temperature sensor 50 detects the temperature of a heat-exchanger 5 at the outlet port thereof, and delivers the same to a controller 55 which performs the control of air-condition such as, combustion of a burner 4, opening and closing of a shutter 52 and the like. In this arrangement, when the temperature of the heat-exchanger 5 is low during start of operation or the like, a detected temperature by the heat-exchanger temperature sensor 50 is low so that the controller 55 operates a shutter control solenoid valve 53 in order to close the shutter 52, restraining the cool air from flowing out from an air feed duct 51. Further, when the temperature reaches a predetermined temperature, the shutter is opened to allow hot air to flow out from the air feed duct 51. Thus, it is possible to prevent cool air from blowing out during heating. |
