Heat exchanger

A heat exchanger comprising:

• a plurality of refrigerant tubes configured to allow a refrigerant to flow therethrough;
• and
• a fin disposed between adjacent refrigerant tubes, the fin being configured to transfer heat,
• wherein the fin comprises:
• a plurality of first bodies;
• a plurality of second bodies, each second body being arranged between adjacent first bodies;
• a plurality of upper bodies, each upper body connecting an upper end of a first body of the plurality of first bodies and an upper end of a second body of the plurality of second bodies that are adjacent to each other;
• a plurality of lower bodies, each lower body connecting a lower end of a first body of the plurality of first bodies and a lower end of a second body of the plurality of second bodies that are adjacent to each other;
• an inner portion overlapping the plurality of refrigerant tubes in a first direction;
• and
• an outer portion not overlapping the plurality of refrigerant tubes in the first direction, and
• wherein a distance between the lower end of a first body of the plurality of first bodies and the lower end of a second body of the plurality of second bodies that are connected to both ends of one lower body of the plurality of lower bodies is larger than a distance between the upper end of the first body and the upper end of the second body connected to the both ends of the one lower.