| 摘要 |
PURPOSE: A safety heating apparatus and a heating control method are provided to efficiently shield an electromagnetic wave by increasing a contact area between first and second heating wires and a third heating wire. CONSTITUTION: A power supply unit(110) comprises a first electrode and a second electrode. A heating wire unit(150) comprises first to third heating wires. The first and second heating wires are electrically connected to the first electrode. The third heating wire is electrically connected to the second electrode. The first and second heating wires are electrically connected to the third heating wire. A temperature controller(120) maintains the temperature of the heating wire between a preset temperature and a limit temperature by a switch. If the temperature of the heating wire reaches a variable blocking temperature, a variable switch(170) blocks the current flowing in the first heating wire. |
