High-voltage heater including disconnection detection unit and disconnection detection method using same

A high-voltage heater including a disconnection detection unit, the high-voltage heater comprising:

• a high-voltage line having one end connected to a high-voltage supply unit, and the other end connected to ground;
• a control unit configured to control a switching unit in response to a control signal of an input unit;
• the switching unit provided on the high-voltage line and configured to supply electric power to a heating unit by being switched in response to a switching signal of the control unit;
• the heating unit provided between the switching unit and the high-voltage supply unit on the high-voltage line and configured to generate heat under the control of the switching unit;
• and
• the disconnection detection unit configured to detect a voltage between the switching unit and the heating unit on the high-voltage line and transmit the voltage to the control unit,
• wherein the control unit determines that the heating unit is disconnected when the voltage detected by the disconnection detection unit is lower than a reference voltage when a high voltage is applied to the high-voltage line.