US 12,168,273 B2
Method for producing heat exchanger
Pierre Olivier Pelletier, Jiaxing Zhejiang (CN); and Leilei Wang, Jiaxing Zhejiang (CN)
Assigned to DANFOSS A/S, Nordborg (DK)
Appl. No. 17/632,806
Filed by Danfoss A/S, Nordborg (DK)
PCT Filed Jul. 30, 2020, PCT No. PCT/CN2020/105824
§ 371(c)(1), (2) Date Feb. 4, 2022,
PCT Pub. No. WO2021/023092, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 201910728082.4 (CN), filed on Aug. 7, 2019.
Prior Publication US 2022/0274216 A1, Sep. 1, 2022
Int. Cl. B23P 15/26 (2006.01); F28F 1/02 (2006.01); F28F 1/32 (2006.01); F28D 1/053 (2006.01)
CPC B23P 15/26 (2013.01) [F28F 1/022 (2013.01); F28F 1/325 (2013.01); F28D 1/05366 (2013.01)] 18 Claims
OG exemplary drawing
 
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.