US 12,298,081 B2
Heat exchanger
Kotaro Oka, Kanagawa (JP); Masatoshi Watanabe, Kanagawa (JP); Yoshinari Maema, Kanagawa (JP); Ryo Takaoka, Kanagawa (JP); Shohei Nakata, Kanagawa (JP); and Daiki Shimano, Kanagawa (JP)
Assigned to FUJITSU GENERAL LIMITED, Kanagawa (JP)
Appl. No. 17/907,877
Filed by FUJITSU GENERAL LIMITED, Kanagawa (JP)
PCT Filed Mar. 1, 2021, PCT No. PCT/JP2021/007769
§ 371(c)(1), (2) Date Aug. 29, 2022,
PCT Pub. No. WO2021/182161, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-041263 (JP), filed on Mar. 10, 2020.
Prior Publication US 2023/0133342 A1, May 4, 2023
Int. Cl. F28D 1/053 (2006.01); F25B 39/02 (2006.01); F25B 39/04 (2006.01); F28F 1/02 (2006.01); F28F 9/02 (2006.01)
CPC F28D 1/05366 (2013.01) [F25B 39/028 (2013.01); F25B 39/04 (2013.01); F28F 1/02 (2013.01); F28F 9/02 (2013.01); F28F 9/0265 (2013.01); F28F 9/028 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A heat exchanger comprising:
a plurality of flat heat transfer tubes that are aligned at intervals; and
a header that has a hollow shape and to which end portions of the plurality of flat heat transfer tubes are connected, wherein
the header includes
an inflow plate that divides an interior portion of the header into an inflow portion in which a gas-liquid two-phase refrigerant flows in and a circulation portion that is located on an upper side of the inflow portion and to which the end portions of the plurality of flat heat transfer tubes are connected, and
a first partition member
that divides the circulation portion into an ascending path that is located on an inner side that is a side to which the end portions of the plurality of flat heat transfer tubes are connected and a descending path that is located on an outer side disposed on an opposite side of the inner side,
that forms an upper communication path that connects the ascending path and the descending path on an upper side of an interior portion of the circulation portion, and
that forms a lower communication path that connects the ascending path and the descending path on a lower side of the interior portion of the circulation portion, and
the inflow plate is provided with a first ejection hole that allows communication between the inflow portion and a downwind side area such that the gas-liquid two-phase refrigerant is ejected from the inflow portion to the downwind side area in a direction perpendicular to a longitudinal direction of the flat heat transfer tubes and a longitudinal direction of the header through the first ejection hole, and such that an amount of a liquid refrigerant distributed in an upwind side area is larger than an amount of a liquid refrigerant distributed in the downwind side area, the downwind side area being on a downwind side of the ascending path and the upwind side area being on an upwind side opposite to the downwind side of the ascending path.