| 摘要 |
<p>PURPOSE:To eliminate adverse influence to a human body and to prevent the contact of a switch for an electric device from becoming defective by applying a DC high electric field between a dust collecting electrode and an ionization electrode after the environment of a combustion device becomes a temperature capable of decomposing ozone. CONSTITUTION:When a power switch 6 is closed, a combustor D is ignited, and a blower C starts rotating. When a temperature sensor 10 provided near the air discharge port of the combustor D detects the temperature state of this section, it is input to a temperature detection controller 10, and compared with a specified temperature adaped for decomposing ozone. In this case, if it is lower than the specified temperature, a control switch 5 is not operated. Thereafter, if it exceeds the specified temperature, an output is produced from the controller 10. When the switch 5 is operated, a high voltage D power source 7 applies a high DC electric field between an ionization electrode 3 and a duct collecting electrode 2, thereby starting dust collecting. in this instance, since the combustor D already arrive at a sufficient temperature of decomposing the ozone, the ozone is not discharged out of a fan heater A.</p> |
