US 12,305,939 B2
Heat exchanger having flow distribution tank structure for thermal stress dispersion
Ji Hun Han, Daejeon (KR); and Jungbum Choi, Daejeon (KR)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 17/798,357
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Feb. 16, 2021, PCT No. PCT/KR2021/001968
§ 371(c)(1), (2) Date Aug. 9, 2022,
PCT Pub. No. WO2021/167320, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10-2020-0020056 (KR), filed on Feb. 19, 2020; and application No. 10-2021-0019251 (KR), filed on Feb. 10, 2021.
Prior Publication US 2023/0082035 A1, Mar. 16, 2023
Int. Cl. F28F 9/02 (2006.01); F28D 1/053 (2006.01); F28F 1/02 (2006.01); F28F 9/26 (2006.01)
CPC F28F 9/0263 (2013.01) [F28D 1/053 (2013.01); F28F 1/02 (2013.01); F28F 9/26 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A heat exchanger comprising a pair of header tanks each including a header and a tank, and positioned in parallel to each other while being spaced apart from each other by a predetermined distance; and a plurality of tubes each having each end fixed to a header tank of the pair of header tanks to form a flow path of a refrigerant,
wherein when a direction in which outside air blows in is referred to as a front direction and a direction in which the outside air blows out is referred to as a rear direction, and when one of an extension direction of the header tank is referred to as a first direction and another of an extension direction of the header tank is referred to as a second direction,
in the heat exchanger, an inner space of the header tank is partitioned and separated in the first and second directions to allow heat exchange media having different average temperatures to respectively circulate in first-and-second direction heat exchange portions, and an inner space of a tube of the plurality of tubes is partitioned and separated into front and rear sides to have a heat exchange portion in a front direction and a heat exchange portion in the rear direction, and
a flow distribution structure is positioned in each tank of the pair of header tanks for a flow of a heat exchange medium circulating to an inner space of a rear side of the tube to be less than a flow of a heat exchange medium circulating to an inner space of a front side of the tube,
wherein the flow distribution structure is a combination of a flow adjustment rib and a flow adjustment baffle for reducing the flow of the heat exchange medium circulating to the inner space of the rear side of the tube by including
the flow adjustment rib formed by a portion of the tank protruding into the header tank in a height direction of the header tank and an end of the protrusion spaced apart from the inner space of the rear side of the tube, and
the flow adjustment baffle extending in the height direction of the header tank and having one end fixed to an inner surface of the flow adjustment rib and the other end spaced apart from the inner space of the rear side of the tube,
wherein in the flow distribution structure, a number of the tubes in which flow is reduced by the flow adjustment baffle is less than or equal to a number of the tubes in which flow is reduced by the flow adjustment rib.