US 11,745,280 B2
Method for manufacturing a heat exchanger having a temperature probe
Jacopo Seiwert, Versailles (FR); Marc Wagner, Saint Maur des Fosses (FR); Marie-Adelaide Cremieux, Jouy-en-Josas (FR); and Younes Belmekki, Vélizy-Villacoublay (FR)
Assigned to L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Paris (FR)
Filed by L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude, Paris (FR)
Filed on May 14, 2021, as Appl. No. 17/320,766.
Claims priority of application No. 2004870 (FR), filed on May 15, 2020.
Prior Publication US 2021/0354224 A1, Nov. 18, 2021
Int. Cl. B23K 1/00 (2006.01); F28D 9/00 (2006.01); F28F 3/02 (2006.01); F28F 21/08 (2006.01); F28F 27/00 (2006.01)
CPC B23K 1/0012 (2013.01) [F28D 9/0043 (2013.01); F28F 3/025 (2013.01); F28F 21/083 (2013.01); F28F 21/084 (2013.01); F28F 21/087 (2013.01); F28F 27/00 (2013.01); F28F 2275/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for manufacturing a heat exchanger of the brazed plate and fin type, comprising:
a) stacking, in a spaced-apart manner, a set of plates parallel to one another and to a longitudinal direction thereby defining, between said plates, a plurality of passages suitable for the flow in the longitudinal direction of a first fluid to be brought into a heat-exchange relationship with at least a second fluid, said plates being delimited by a pair of longitudinal edges extending in the longitudinal direction and a pair of lateral edges extending in a lateral direction perpendicular to the longitudinal direction,
b) forming at least one of the plates stacked in step a) by superposing, in a stacking direction perpendicular to the longitudinal and lateral directions, at least a first flat product and a second flat product on top of one another, at least one of the first and second flat products comprising at least one groove that extends parallel to the plates and leads towards the outside of the stack formed in step a) through at least one opening in a lateral or longitudinal edge,
c) arranging at least one braze material between the first flat product and the second flat product,
d) arranging at least one temperature probe in the groove, a free space being provided between at least a part of the temperature probe, for the one part, and the internal walls of the groove, for the other part,
e) brazing the set of plates, including brazing the first flat product to the second flat product, with the braze material being melted and at least a part of the braze material diffusing in the first flat product and the second flat product, at least a part of the free space provided between the temperature probe and the internal walls of the groove being filled with solidified braze material.