| 摘要 |
PURPOSE: A heater apparatus is provided to improve safety and reduce manufacturing costs by simplifying the structure thereof. CONSTITUTION: A heater apparatus is composed of a main body(11) manufactured by a casting method, an electric heater(13) installed at the inside of the main body, heating pipes(12) installed at the inside of the main body, a temperature fuse(14), a temperature sensor(15), a bimetal(16), a connecting pipe(17) for connecting heating pipes exposed outside the main body, and supply pipes(18) connected to the heating pipe and supplying/discharging fluid. The temperature sensor is installed at the outer wall of the main body, detects the temperature of the main body, and supplies data about the detected temperature to a control unit. The bimetal is installed at the outer wall of the main body, and temporarily cuts off electricity supplied to the heater to prevent the main body from being overheated.
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