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    • 4. 发明申请
    • PROPULSION SYSTEM
    • 推进系统
    • WO01094197A1
    • 2001-12-13
    • PCT/AU2001/000677
    • 2001-06-07
    • B01F3/04B01F5/02B63H11/02B63H11/12B63H11/14B63H11/16B63H20/00F01K15/04F02K1/36F02K1/06F02K1/15F02K1/30F01K23/00F01K23/04
    • F02K1/36B01F3/0446B01F5/0206B63H11/02B63H11/09B63H11/12B63H11/14F01K15/04Y02T50/671
    • A propulsion system comprises of a flow passage (173) having an intake (175) for communicating with a source of working fluid such as seawater and an outlet (177). A mixing zone (209) is disposed within the flow passage (173) between the intake (175) and the outlet (177). An injection means including annular nozzle (217) is provided for injecting a hot compressible driving fluid (175) such as steam into the mixing zone (209) in a flow direction towards the outlet (177). The arrangement is such that the interaction between the steam and the seawater in the mixing zone (207) develops a pressure reduction in the mixing zone (207) to cause seawater to be drawn from the source into the mixing zone (207) and propelled towards the outlet (177). A marine drive unit incorporating the propulsion system is also claimed. A heat recovery system comprising a refrigerant circuit with a heat exchanger for extracting heat from a heat source to vapourise a refrigerant in the circuit and means to convert heat energy in the vapourised refrigerant to torque and, a nozzle means (217) having an inlet, an outlet (177) and a flow passage (173) the size of which is selectively variable are also disclosed.
    • 推进系统包括具有用于与工作流体源(例如海水)和出口(177)连通的入口(175)的流动通道(173)。 混合区(209)设置在进气口(175)和出口(177)之间的流动通道(173)内。 提供了一种包括环形喷嘴(217)的喷射装置,用于沿着朝向出口(177)的流动方向将诸如蒸汽的热压缩驱动流体(175)喷射到混合区域(209)中。 这种布置使得混合区(207)中的蒸汽和海水之间的相互作用在混合区(207)中产生压力降低,以使海水从源进入混合区(207)并向 出口(177)。 还要求具有推进系统的船用驱动单元。 一种热回收系统,包括具有用于从热源提取热量以蒸发回路中的制冷剂的热交换器的制冷剂回路和将蒸发的制冷剂中的热能转化为转矩的装置,以及具有入口的喷嘴装置(217) 还公开了其尺寸是可选择性变化的出口(177)和流动通道(173)。