The present invention relates to a heat exchanger in a refrigerator having
a simple structure and an improved heat exchange performance. For this,
the present invention includes refrigerant tubes (10) having a plurality
of straight parts (11) and a plurality of curved parts (12) connected
between the straight parts arrange to form one or more columns
perpendicular to each other, a plurality of straight plate type fins (20)
fitted to the straight parts (11) of the refrigerant tubes (10) by means
of a plurality of through holes (21) formed therein to form one or more
than columns along a length direction, and one pair of reinforcing plates
(30) fitted to the straight parts of the refrigerant tubes on both sides
of the fins, wherein ST=D/N, where D denotes a width of the reinforcing
plate (30), ST denotes a distance between centers of the refrigerant tube
in each column, N denotes a number of the columns of the refrigerant tubes
(21).
