Hydrojet

Marine propulsion – Jet drive

Patent

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Details

114151, B63H 1100

Patent

active

055205577

ABSTRACT:
A hydrojet for ships, intended for use in shallow waters, has a semiaxially bladed impeller with a vertical axis of rotation rotatably arranged in a well-shaped housing. The drive for the impeller is introduced into the housing from the top through a cover plate, and the housing is closed at the bottom by a bottom plate which has a water inlet arranged in the center for axial admission to the impeller and at least one flatly sloped water outlet. A control device in which the water delivered by the impeller is fed to at least one outlet nozzle without conversion of kinetic energy into pressure energy, is arranged between the discharge end of the delivery channels of the impeller and at least one water outlet. The control device forms a ring channel without blading. The water inlet is designed asymmetrically. The bottom plate with the water inlet and the water outlet of which there is at least one, which water inlet and water outlet are integrated in it, is endlessly rotatable around the longitudinal axis of the housing in both circumferential directions, either as part of the housing, which is rotatable as a whole, or in relation to the housing, which may be part of the carrying ship design in the latter case.

REFERENCES:
patent: 4459117 (1984-07-01), Jordan
patent: 5146865 (1992-09-01), Lais et al.

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