Cover fin and heat exchanger unit including the same

A cover fin comprising:

• a front part and a rear part being perpendicular to a forward/rearward direction and spaced apart from each other in the forward/rearward direction;
• a connecting part connecting the front part and the rear part;
• and
• a wing part protruding from a side surface of the connecting part in a leftward/rightward direction toward an upper side when one direction being perpendicular to the forward/rearward direction is defined as an upward/downward direction and another direction being perpendicular to the forward/rearward direction and the upward/downward direction is defined as the leftward/rightward direction.

A heat exchanger comprising:

• a plurality of heat exchange pipelines disposed in a heat exchange area configured to receive heat generated through a combustion reaction and heat heating water, and extending along a forward/rearward direction to receive the heating water and cause the heating water to flow through an interior thereof;
• a plurality of heat fins disposed in the heat exchange area, formed in a plate shape crossing the heat exchange pipelines, and through which the plurality of heat exchange pipelines pass;
• a front plate and a rear plate coupled to front ends and rear ends of the plurality of heat exchange pipelines, respectively;
• and
• a cover fin disposed in an interior space between, among the plurality of heat fins, a first heat fin disposed adjacent to the front ends of the plurality of heat exchange pipelines and the front plate, and inserted into the interior space from a lower side toward an upper side when one direction being perpendicular to the forward/rearward direction is defined as an upward/downward direction,
• wherein the cover fin includes:
• a front part contacting the front plate;
• a rear part contacting the first heat fin;
• and
• a connecting part connecting the front part and the rear part.