US 12,449,208 B2
Three-fluid plate heat exchanger
Kamel Azzouz, Le Mesnil Saint Denis (FR); Jérémy Blandin, Le Mesnil Saint Denis (FR); Imad Chelali, Le Mesnil Saint Denis (FR); Cédric De Vaulx, Le Mesnil Saint Denis (FR); Amrid Mammeri, Le Mesnil Saint Denis (FR); and Julien Tissot, Le Mesnil Saint Denis (FR)
Assigned to Valeo Systemes Thermiques, Le Mesnil Saint-Denis (FR)
Appl. No. 17/784,730
Filed by Valeo Systemes Thermiques, Le Mesnil Saint-Denis (FR)
PCT Filed Dec. 11, 2020, PCT No. PCT/FR2020/052397
§ 371(c)(1), (2) Date Jun. 13, 2022,
PCT Pub. No. WO2021/116626, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 1914409 (FR), filed on Dec. 13, 2019.
Prior Publication US 2023/0003458 A1, Jan. 5, 2023
Int. Cl. F28D 9/00 (2006.01); F28F 3/00 (2006.01); F28F 3/04 (2006.01); F28F 3/08 (2006.01); F28F 9/02 (2006.01)
CPC F28D 9/0093 (2013.01) [F28D 9/005 (2013.01); F28F 3/005 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A three-fluid heat exchanger comprising:
a stack of plates;
a first circuit for circulation of a first heat-transfer fluid between a first inlet manifold and a first outlet manifold for the first heat-transfer fluid;
a second circuit for the circulation of a second heat-transfer fluid between a second inlet manifold and a second outlet manifold for the second heat-transfer fluid, and
a third circuit for the circulation of a third heat-transfer fluid between a third inlet manifold and a third outlet manifold for the third heat-transfer fluid,
wherein the stack of plates forms an alternation of first and second circulation spaces for the circulation of the first heat-transfer fluid, the second heat-transfer fluid, and the third heat-transfer fluid, such that the alternation of the first circulation space and the second circulation space is stacked in a direction of stacking of plates, the first circuit being arranged within the first circulation spaces and the second and third circuits being jointly arranged within the second circulation spaces;
wherein the first circulation circuit comprises at least two passes within the first circulation space;
wherein the second and third circulation circuits each comprise at least two passes within the second circulation space,
wherein the second circulation circuit has a U-shape connecting the second inlet manifold and the second outlet manifold,
wherein the third circulation circuit has a U-shape connecting the third inlet manifold and the third outlet manifold, and
wherein the first heat-transfer fluid comprises a refrigerant, the second heat-transfer fluid comprises a first glycol water fluid, and the third heat-transfer fluid comprises a second glycol water fluid.