| 摘要 |
PURPOSE:To improve comfortable property upon room heating by operating a fan intermittently upon non-conduction of a heat source. CONSTITUTION:Conduction of a burner 1 is controlled by a heat source control circuit 6 based on the result of comparation between the output of a thermistor 3 and a preset room temperature setting value while the fan 2 is controlled by a fan control circuit 7 in conjunction with the control of the burner. According to this control, the fan is operated intermittently upon non-conduction of heat source. The fan 2 is operated intermittently upon non-conduction of the burner 1 and suction air stream is generated to make airflow around the thermistor 3, therefore, the thermistor can follow up the actual room temperature substantially correctly. In this case, blow-off airflow, having a temperature same as the room temperature, is generated at all times and inhabitant will never be provided with the feeling of cold airflow. |
