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    • 5. 发明申请
    • FALLING FILM EVAPORATOR
    • 降膜蒸发器
    • US20080148767A1
    • 2008-06-26
    • US11962605
    • 2007-12-21
    • Paul DE LARMINATLuc LE COINTESatheesh KULANKARA
    • Paul DE LARMINATLuc LE COINTESatheesh KULANKARA
    • F25B39/02F25B1/00
    • F25B39/028F25B2339/0242F28D3/02
    • Falling film and hybrid falling film evaporators are provided for use in a two-phase refrigeration system or process system. The evaporator includes a shell having an upper portion, a lower portion, and a tube bundle having tubes extending substantially horizontally in the shell. A hood disposed over the tube bundle has an upper end adjacent the upper portion above the tube bundle, the upper end having opposed substantially parallel walls extending toward the lower portion, the walls terminating at an open end opposite the upper end. Once liquid refrigerant or liquid refrigerant and vapor refrigerant is deposited onto the tube bundle, the substantially parallel walls of the hood substantially prevent cross flow of refrigerant vapor or liquid and vapor between the tubes of the tube bundle. A flow distributor disposed adjacent the open end between the hood and the shell modifies the refrigerant flow, providing more uniform refrigerant flow distribution.
    • 提供下降膜和混合降膜蒸发器用于两相制冷系统或过程系统。 蒸发器包括具有上部,下部和具有在壳中基本水平延伸的管的管束的壳体。 设置在管束上方的罩具有邻近管束上方的上部的上端,上端具有朝向下部延伸的相对的基本平行的壁,壁终止于与上端相对的开口端。 一旦液体制冷剂或液体制冷剂和蒸气制冷剂沉积到管束上,则罩的基本上平行的壁基本上防止制冷剂蒸汽或管束的管之间的液体和蒸气的交叉流动。 设置在罩和壳体之间的开口端附近的流动分配器改变制冷剂流动,从而提供更均匀的制冷剂流量分布。