Complex heat exchanger

A complex heat exchanger, which is provided in a secondary loop linked with a primary loop including a compressor, a condenser, an expansion valve, and an evaporator and configured such that a refrigerant circulates therethrough, the secondary loop being configured such that a coolant, which exchanges heat with the refrigerant, circulates therethrough, the complex heat exchanger being configured to perform at least one air conditioning mode selected from cooling, heating, and dehumidifying modes by allowing a first coolant or a second coolant to exchange heat with outside air, which a temperature of the first coolant is higher than a temperature of the second coolant,

• wherein when a direction in which outside air is blown inward is a forward direction and a direction in which outside air is blown outward is a rearward direction, a plurality of flow ports provided on a first heat exchange part and a plurality of flow ports provided on a second heat exchange part disposed rearward of the first heat exchange part are connected to one another, such that the coolant flows sequentially through the first heat exchange part and the second heat exchange part or the coolant flows independently through the first heat exchange part and the second heat exchange part in accordance with introduction and discharge positions of the first coolant and the second coolant,
• wherein the first heat exchange part comprises:
• a pair of first tanks having coolant flow spaces therein and spaced apart from each other at a predetermined distance;
• a plurality of first tubes each having two opposite ends fixed to the first tanks to define coolant flow paths;
• one side first flow port provided in one first tank and configured to allow the coolant to flow;
• and
• another side first flow port provided in the other first tank and configured to allow the coolant to flow,
• wherein the second heat exchange part comprises:
• a pair of second tanks having coolant flow spaces therein and spaced apart from each other at a predetermined distance;
• a plurality of second tubes each having two opposite ends fixed to the second tanks to define coolant flow paths;
• one side second flow port provided in one second tank and configured to allow the coolant to flow;
• another side second flow port provided in the other second tank and configured to allow the coolant to flow, and
• wherein the complex heat exchanger comprises:
• the first heat exchange part;
• the second heat exchange part;
• a first manifold including a first communication port connected to one side first flow port, a first flow path (1) configured to communicate with the first communication port, a second communication port connected to one side second flow port, a second flow path (2) configured to communicate with the second communication port, one side manifold being configured to connect one side first flow port and one side second flow port;
• a second manifold including a third communication port connected to the other side second flow port, a third flow path (3) configured to communicate with the third communication port, a fourth communication port connected to the other side first flow port, and a fourth flow path 4 configured to communicate with the fourth communication port, the other side manifold being configured to connect the other side first flow port and the other side second flow port.