US 12,013,188 B2
Shell-and-plate type heat exchanger
Mitsuharu Numata, Osaka (JP); Yutaka Shibata, Osaka (JP); Kou Terai, Osaka (JP); and Hirokazu Fujino, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jul. 8, 2022, as Appl. No. 17/860,339.
Application 17/860,339 is a continuation of application No. PCT/JP2021/000987, filed on Jan. 14, 2021.
Claims priority of application No. 2020-003833 (JP), filed on Jan. 14, 2020.
Prior Publication US 2022/0341674 A1, Oct. 27, 2022
Int. Cl. F28D 9/00 (2006.01); F28F 3/08 (2006.01); F28D 21/00 (2006.01)
CPC F28D 9/0006 (2013.01) [F28D 9/0043 (2013.01); F28F 3/08 (2013.01); F28D 9/005 (2013.01); F28D 21/00 (2013.01); F28D 2021/0068 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A shell-and-plate heat exchanger comprising:
a shell that:
forms an internal space, and
comprises:
a refrigerant outlet at a top of the shell; and
a refrigerant inlet disposed at a bottom of the shell and that introduces a refrigerant into the internal space; and
a plate stack disposed in the internal space and that comprises heat transfer plates that are stacked and joined together, wherein
the shell-and-plate heat exchanger is configured to allow the refrigerant that has flowed into the internal space to evaporate,
the refrigerant outlet emits a gas refrigerant out of the internal space through the refrigerant outlet,
a stacking direction of the heat transfer plates is in a longitudinal direction of the shell,
the refrigerant inlet is disposed at a center portion in the longitudinal direction of the shell,
the plate stack forms:
refrigerant channels that communicate with the internal space and through which a refrigerant flows; and
heating medium channels that are blocked from the internal space and through which a heating medium flows,
each of the refrigerant channels is adjacent to an associated one of the heating medium channels with one of the heat transfer plates interposed therebetween,
the plate stack is divided into heat exchange sections each comprising two or more of the heat transfer plates,
one of the heat exchange sections that is disposed closest to the refrigerant outlet exchanges a smallest amount of heat among the heat exchange sections,
the heat exchange sections are disposed in series in a flow path of the heating medium in the plate stack,
the one of the heat exchange sections is constituted of a most downstream heat exchange section that is disposed most downstream in the flow path of the heating medium among the heat exchange sections, and
a number of the heat transfer plates in the most downstream heat exchange section is equal to or smaller than a number of the heat transfer plates in any other of the heat exchange sections.