HEAT EXCHANGER

PROBLEM TO BE SOLVED: To keep high heat exchange efficiency in the entire refrigerant flow channel by suppressing drift of gas-liquid two-phase fluid flowing into a plurality of heat exchange flow channels, in a heat exchanger exchanging heat of the gas-liquid two-phase fluid.SOLUTION: A heat exchanger includes a plate constituting body composed of a plurality of stacked plates including a plurality of first plates forming a plurality of first flow channels in which a first fluid flows, and a plurality of second plates forming a plurality of second flow channels in which a second fluid flows. In at least a part of the first flow channels, the first fluid has a gas-liquid two-phase state, a first inlet header space communicated to a supply portion of the first fluid and the plurality of first flow channels respectively formed on each of the plurality of first plates, and a first outlet header space communicated to a discharge portion of the first fluid and the plurality of first flow channels respectively formed on each of the plurality of first plates, are formed on the plurality of first plates, and the first outlet header space forms a space penetrating along the stacking direction of the plurality of plates including the plurality of second plates.SELECTED DRAWING: Figure 2 【課題】気液二相の流体を熱交換する熱交換器において、複数の熱交換流路に流入する気液二相の流体の偏流を抑制して冷媒流路全体として熱交換効率を高く維持する。【解決手段】一実施形態に係る熱交換器は、第１流体が流れる複数の第１流路を形成する複数の第１プレートと、第２流体が流れる複数の第２流路を形成する複数の第２プレートと、を含む積層された複数のプレートで構成されるプレート構成体を備え、前記第１流路の少なくとも一部で前記第１流体は気液二相状態にあり、前記第１流体の供給部と前記複数の第１プレートの各々に形成された前記複数の第１流路とに連通する第１入口ヘッダ空間と、前記第１流体の排出部と前記複数の第１プレートの各々に形成された前記複数の第１流路とに連通する第１出口ヘッダ空間と、が前記複数の第１プレートに形成され、前記第１出口ヘッダ空間は、前記複数の第２プレートを含む前記複数のプレートの積層方向に沿って貫通した空間を形成している。【選択図】図２