| 摘要 |
PURPOSE:To enable thermal insulation to be efficiently effected regardless of engine operation by configurating a device in such a way that a combustor equipped with both a burner and a heat exchanger burns fuel, then heat energy produced by the combustion is recovered by the heat exchanger and is forwarded into an insulating container to keep carried materials warm. CONSTITUTION:When thermal insulation is effected in an insulating container 17, an operational switch 21 is turned on first allowing electric current to flow to a control device 11 from a battery 22. Simultaneously, a temperature signal from a room temperature sensor 20 attached to the insulating container 17, is inputted into the control device 11. An ignition plug 10 is electrically energized through a bridge circuit 13 when the temperature signal is lower than an insulating signal. Simultaneously, a vaporization plug 9 is electrically energized through a bridge circuit 12. And air is admitted into a burner 5 from a bi-pass pipe 4 with a bi-pass valve opened. Simultaneously, fuel is fed to the burner 5 with a fuel valve opened. This allows the burner 5 to start burning allowing combustion gas to be forwarded into a heat exchanger 6, then war air from the heat exchanger is forwarded to the insulating container to keep it warm. |
