Method of manufacturing a heat exchanger

A method for manufacturing a corrugated fin, for a heat exchanger including a plurality of tubes, having a plurality of bent ridge portions brazed with one of said plurality of tubes;

• the method comprising:
• shaping a metal thin plate into a corrugated shape having said plurally of bent ridge portions each having an outer edge for contacting and connecting with one of said plurality of tubes, and forming a hole at only said plurality of bent ridge portions;
• disposing brazing material on an inner edge of said plurality of bent ridge portions, which is opposite to said outer edge;
• and
• brazing said outer edge of said plurality of bent ridge portions to one of said plurality of tubes, wherein
• the brazing material flows from the inner edge to the outer edge through said holes during the bracing process.

A method for manufacturing a heat exchanger comprising:

• providing a metal plate;
• forming a plurality of bent ridge portions each having an in said metal plate;
• forming a hole at only each of said plurality of bent ridge portions;
• disposing brazing material at an inner edge of adjacent each of said plurality of bent ridge portions;
• providing a first and second tube;
• positioning said metal plate between said first and second tubes such that the outer edge of said plurality of bent ridge portions contact said first and said second tube;
• and
• heating said metal plate and said tubes to melt said brazing material, wherein
• the brazing material flows from the inner edge to the outer edge through said hold during the heating process.

A method for manufacturing a heat exchanger having a plurality of tubes and a corrugated fin having a plurality of bent ridge portions connected to one of said plurality of tubes;

• said method comprising:
• manufacturing said fin by forming holes within a metal plate, and bending said metal plate such that areas where the holes are formed become said plurality of bent ridge portions each having an outer edge for contacting and connecting to one of said plurality of tubes;
• disposing brazing material at an inner edge of said plurality of bent ridge portions;
• assembling said fin with said plurality of tubes such that the outer edge of said plurality of bent ridge portions contact one of said plurality of tubes;
• and
• brazing said outer edge of said plurality of bent ridge portions to one of said plurality of tubes, wherein:
• the brazing material flows from the inner edge to the outer edge through said holes during the brazing process.