Warm fan circuit and cab electric fan heater thereof

The utility model belongs to the field of locomotive warm braw part technique and discloses a warm fan circuit and cab electric fan heater thereof, including control circuit and generating heat the return circuit, control circuit includes contactor coil, and the return circuit that generates heat includes contactor contact and the heating element who establishes ties with contactor contact including parallelly connected generate heat branch road and fan branch road, the branch road that generates heat, and the fan branch road includes and is used for distributing the heat that heating elementproduced to the outside fan of quick -witted case. The heating element who is controlled in the return circuit that generates heat by the contactor generates heat, realizes the low -pressure control high pressure, guarantees that the circuit is stable, ensures that heating element keeps normal work, adopt fin formula electrothermal tube, heating area is big, and the heat loss is little, has advantages such as fast, even,