Heat exchanger

A heat exchanger comprising:

• first and second header tanks into and from which a cooling fluid is introduced and discharged, the first and second header tanks being spaced apart from each other at a predetermined distance;
• and
• a core part disposed between the first and second header tanks, having a plurality of tubes and fins, and configured to perform a movement of the cooling fluid and heat exchange of the cooling fluid,
• wherein the first or second header tank is divided into a plurality of spaces by a separation wall that divides a flow path in a width direction, and
• wherein a predetermined space is formed in a longitudinal direction in the separation wall so that condensate water is discharged,
• wherein the separation wall comprises a first partition wall and a second partition wall, and
• wherein the first partition wall and the second partition wall are spaced apart from each other at a predetermined interval to define a predetermined space in the longitudinal direction,
• wherein the first header tank further comprises a baffle configured to divide the flow path in the longitudinal direction, and
• wherein a main communication hole and an auxiliary communication hole, which are formed through the first partition wall and the second partition wall, are formed in the separation wall of the first header tank,
• wherein the second header tank comprises a plurality of throttle plates configured to adjust a flow rate in the longitudinal direction,
• wherein the first header tank and the second header tank are divided in accordance with a flow of the fluid, a region in which the fluid is introduced into the first header tank is a first tank zone, an end region of a first pass through which the fluid descends from the first tank zone to the second header tank is a second tank zone, one end region of a second pass connected to the second tank zone in the longitudinal direction and configured to allow the fluid to ascend to the first header tank is a third tank zone, the other end region of the second pass is a fourth tank zone, a region connected to the fourth tank zone through the main communication hole and the auxiliary communication hole is a fifth tank zone, an end region of a third pass through which the fluid descends from the fifth tank zone to the second header tank is a sixth tank zone, one end region of a fourth pass connected to the sixth tank zone in the longitudinal direction and configured to allow the fluid to ascend to the first header tank is a seventh tank zone, a region, which is the other end region of the fourth pass through which the fluid is discharged to the outside of the heat exchanger, is an eighth tank zone, a first throttle plate is disposed in the third tank zone, and a second throttle plate is disposed in the seventh tank zone.