US 12,135,151 B2
Dual heat exchanger for heat pump system
Scott Kent, Albion, NY (US); Robert Louis Runk, Lockport, NY (US); Lindsey Lee Leitzel, Lockport, NY (US); and Szymon Walczak, Ostrow-Wielkopolski (PL)
Assigned to MAHLE INTERNATIONAL GMBH, Stuttgart (DE)
Filed by MAHLE INTERNATIONAL GMBH, Stuttgart (DE)
Filed on Oct. 11, 2022, as Appl. No. 17/963,526.
Prior Publication US 2024/0118005 A1, Apr. 11, 2024
Int. Cl. F25B 39/02 (2006.01); F25B 30/02 (2006.01)
CPC F25B 39/02 (2013.01) [F25B 30/02 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A heat exchanger comprising:
an assembly comprising a first set of tubes that are arranged in a parallel flow manner between a first manifold and a second manifold, wherein central straight portions of adjacent tubes within the first set of tubes are disposed with a space therebetween along each tube of the first set of tube between the first and second manifolds;
the assembly comprises a second set of tubes that are arranged in a parallel flow manner between a third manifold and a fourth manifold, wherein central straight portions of adjacent tubes within the second set of tubes are at least partially disposed within the space between adjacent tubes of the first set of tubes;
wherein a fluid that flows through the first set of tubes additionally flows through the second set of tubes before the fluid returns to again flow through the first set of tubes,
wherein each of the tubes within the first set of tubes includes the straight portion along its length and a curved portion along its length, wherein the straight portion of each of the tubes within the first set of tubes is fixed to the first manifold and the curved portion of each of the tubes within the first set of tubes is fixed to the second manifold, and
wherein each of the tubes within the second set of tubes includes the straight portion along their length and a curved portion along their length, wherein the curved portion of each of the tubes within the second set of tubes is fixed to the third manifold and the straight portion of each of the tubes within the second set of tubes is fixed to the fourth manifold,
wherein the curved portion of each of the tubes of the second set extend away from the straight portion with vector components in right and left directions that are opposite from a shape of the curved portion that extends from the straight portion in each of the tubes within the first set of tubes, wherein the right and left directions face out from the respective right and left sides of the tube along the straight portion of the respective tubes within the first and second sets of tubes.