US 12,123,658 B2
Heat exchanger for the thermal coupling of two fluids
Dennis Aul, Stuttgart (DE); Uwe Foerster, Erdmannhausen (DE); Martin Sievers, Kernen Im Remstel (DE); and Dawid Trawinski, Ostrow Weilkopolski (PL)
Assigned to Mahle International GmbH, (DE)
Filed by MAHLE International GmbH, Stuttgart (DE)
Filed on Oct. 18, 2022, as Appl. No. 17/968,760.
Claims priority of application No. 10 2021 211 777.5 (DE), filed on Oct. 19, 2021.
Prior Publication US 2023/0124890 A1, Apr. 20, 2023
Int. Cl. F28D 7/16 (2006.01)
CPC F28D 7/16 (2013.01) 20 Claims
OG exemplary drawing
 
1. A heat exchanger for the thermal coupling of two fluids, comprising:
an inflow pipe defining a pipe longitudinal centre axis;
a fluid inlet arranged on the inflow pipe via which a first fluid stream of heat exchanger fluid is flowable into the inflow pipe;
a plurality of flat tubes arranged on the inflow pipe adjacent to the fluid inlet in a direction of the pipe longitudinal centre axis, the plurality of flat pipes disposed spaced apart from one another along the pipe longitudinal centre axis and each leading into the inflow pipe such that the first fluid stream is flowable along a first fluid path extending from the fluid inlet through the inflow pipe and the plurality of flat tubes;
the plurality of flat tubes extending through a second fluid path for a second fluid stream of fluid such that the plurality of flat tubes are flowed through by the first fluid stream and flowed about by the second fluid stream during operation;
a passage screen arranged in the first fluid path between the fluid inlet and the plurality of flat tubes;
the passage screen including a passage screen aperture interacting with the heat exchanger fluid and through which the first fluid stream is flowable;
wherein the passage screen aperture is fluidically connected in series with the plurality of flat tubes; and
wherein a gap between the passage screen aperture of the passage screen and a first flat tube of the plurality of flat tubes, which with respect to the fluid inlet is disposed next in the direction of the pipe longitudinal centre axis and directly adjacent to the passage screen, has a length measured parallel to the pipe longitudinal centre axis of 2.0 mm to 9.0 mm.