Fins and heat exchanger comprising same

A fin comprising:

• a fin body including a tube insertion hole opened along a first direction being one direction being perpendicular to an upward/downward direction, and configured such that a tube extending along the first direction is inserted thereinto;
• and
• a protrusion part protruding from an edge region being a region of the fin body, which defines the tube insertion hole, in the first direction,
• wherein the protrusion part includes:
• a protrusion part body;
• a first groove formed to be recessed from a first protruding portion being a portion of the protrusion part body, which is located in a second direction being one direction being perpendicular to the first direction and an upward/downward direction, in an opposite direction to the first direction;
• and
• a second groove recessed from a second protruding portion being a portion of the protrusion part body, which is located in an opposite direction to the second direction, in the opposite direction to the first direction.

A heat exchanger comprising:

• a tube extending along a first direction;
• and
• a fin, into which the tube is inserted,
• wherein the fin includes:
• a fin body including a tube insertion hole, into which the tube is inserted;
• and
• a protrusion part protruding from an edge region being a region of the fin body, which defines the tube insertion hole, in the first direction, and
• wherein the protrusion part includes:
• a protrusion part body;
• and
• a groove formed to be recessed from the protrusion part body in an opposite direction to the first direction.