Composite Heater Core for Vehicles

A composite heater apparatus for a vehicle, comprising:

• a first header partitioned into a coolant inlet space and an oil inlet space by a longitudinal partition wall, with a coolant inlet pipe and an oil inlet pipe connected to the coolant inlet space and the oil inlet space respectively, and comprising a plurality of inlet through-slots which are provided in a sidewall of the first header in a longitudinal direction thereof;
• a second header partitioned into a coolant outlet space and an oil outlet space by a longitudinal partition wall, with a coolant outlet pipe and an oil outlet pipe connected to the coolant outlet space and the oil outlet space respectively, and comprising a plurality of outlet through-slots which are provided in a sidewall of the second header in a longitudinal direction thereof,
• a plurality of fluid tubes, each of the fluid tubes being connected at a first end thereof to an associated inlet through-slot and being connected at a second end thereof to an associated outlet through-slot such that the first and second headers communicate with each other, each of the fluid tubes being partitioned by one partition wall to form a coolant path and an oil path so that the coolant inlet space of the first header communicates with the coolant outlet space of the second header through the coolant path, and the oil inlet space of the first header communicates with the oil outlet space of the second header through the oil path respectively;
• and
• a heat exchanging member arranged between outer circumferences of the fluid tubes.