CPC B23P 15/26 (2013.01) [F28F 1/022 (2013.01); F28F 1/325 (2013.01); F28D 1/05366 (2013.01)] | 18 Claims |
1. A method for producing a heat exchanger which comprises: a plurality of heat exchange tubes, the plurality of heat exchange tubes extending in a first direction and being arranged in a second direction perpendicular to the first direction; and a fin, the fin being provided with a plurality of fin grooves for mounting the plurality of heat exchange tubes respectively, and the fin groove being provided with an opening on one side in a third direction perpendicular to the first direction and the second direction,
the method comprising the steps of:
providing heat exchange tube preforms for forming heat exchange tubes, the heat exchange tube preform having a maximum size in the second direction;
providing a fin preform for forming a fin, the fin groove of the fin preform having a minimum size in the second direction, and the maximum size being greater than the minimum size;
inserting the heat exchange tube preforms into the fin grooves of the fin preform, so as to generate a predetermined contact pressure between the heat exchange tube preform and the fin preform by means of an elastic deformation of at least one of the heat exchange tube preform and the fin preform; and
welding the heat exchange tube preforms and the fin preform together.
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