Title:
推進システム
Document Type and Number:
Japanese Patent JP4301808
Kind Code:
B2
Abstract:
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.
Inventors:
Burns, Alan, Robert
Application Number:
JP2002501727A
Publication Date:
July 22, 2009
Filing Date:
June 07, 2001
Export Citation:
Assignee:
Pursuit Dynamics PLC
International Classes:
B63H11/12; B01F3/04; B01F5/02; B63H11/02; B63H11/14; B63H11/16; B63H20/00; F01K15/04; F02K1/36
Domestic Patent References:
| JP1196000A | ||||
| JP6144371A |
Foreign References:
| US4718870 |
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori