Claims
- 1. A wall thruster comprising an impeller of the mixed-flow type;
- a driving means for rotating said impeller;
- a swirl chamber comprising a cylinder and a backplate, wherein said backplate is attached to a first end of said cylinder and said impeller is rotatably mounted to said backplate coaxially with the axis of said cylinder;
- a nozzle plate removably attached to a second end of said cylinder, the plane of said nozzle plate being substantially perpendicular to the axis of said cylinder, said nozzle plate comprising an intake port located in the center of said nozzle plate, and having a plurality of nozzles defined in said nozzle plate located around said intake port in the same plane, wherein the sides of said nozzles are substantially parallel to the centerline of said intake port, the outermost portion of said intake port and said nozzles being essentially flush with the outermost surface of said nozzle plate.
- 2. A wall thruster comprising an impeller
- a driving means for rotating said impeller;
- a swirl chamber comprising a cylinder and a backplate, wherein said backplate is attached to a first end of said cylinder and said impeller is rotatably mounted to said backplate coaxially with the axis of said cylinder;
- a nozzle plate removably attached to a second end of said cylinder, the plane of said nozzle plate being substantially perpendicular to the axis of said cylinder, said nozzle plate comprising an intake port located in the center of said nozzle plate, and having a plurality of nozzles defined in said nozzle plate and located around said intake port, the outermost portion of said intake port and said nozzles being essentially flush with the outermost surface of said nozzle plate and having a substantially elliptical cross section, the major axes of the ellipses projecting radially with respect to the center of said nozzle plate defining a converging passageway between said nozzles.
- 3. A wall thruster comprising an impeller
- a driving means for rotating said impeller;
- a swirl chamber comprising a cylinder and a backplate, wherein said backplate is attached to a first end of said cylinder and said impeller is rotatably mounted to said backplate coaxially with the axis of said cylinder;
- a nozzle plate removably attached to a second end of said cylinder, the plane of said nozzle plate being substantially perpendicular to the axis of said cylinder, said nozzle plate comprising an intake port located in the center of said nozzle plate, and having a plurality of nozzles defined in said nozzle plate and located around said intake port, the outermost portion of said intake port and said nozzles being essentially flush with the outermost surface of said nozzle plate wherein said nozzle plate has an interior surface and the portions of said interior surface which are contiguous with the portions of said nozzles which are located radially outwardly with respect to the center of said nozzle plate have a tapered edge, said portions of said interior surface are in the shape of an inclined bellmouth.
- 4. A wall thruster comprising an impeller of the mixed-flow type;
- a means for rotating said impeller;
- a swirl chamber comprising a cylinder and a backplate, wherein said backplate is attached to a first end of said cylinder and said impeller is rotatably mounted to said backplate coaxially with the axis of said cylinder;
- an intake port located at the opposite end of said cylinder directly communicating with said swirl chamber and at least two outlet nozzles located at said opposite end around said intake port in a circular array, the outermost portions of said intake port and said outlet nozzles being essentially flush with the outermost surface of the said opposite end of said cylinder, said nozzles having a substantially elliptical cross-section, the major axis of the ellipses projecting radially with respect to the circular array of outlet nozzles.
- 5. A wall thruster comprising an impeller of the mixed-flow type;
- a means for rotating said impeller;
- a swirl chamber comprising a cylinder, a backplate and a nozzle plate, said backplate being attached to a first end of said cylinder, said nozzle plate being attached to an opposite end of said cylinder including an intake port the outermost portion of which is essentially flush with the outer surface of the nozzle plate, and directly communicating with said swirl chamber, said impeller being rotatably mounted to said backplate in said swirl chamber coaxially with the axis of said cylinder and such that the eye of said impeller is aligned with said intake port;
- at least two outlet nozzles defined in said nozzle plate and located around said intake port in a circular array, the outermost portions of said outlet nozzles being essentially flush with the outermost surface of said nozzle plate;
- said nozzles having a substantially elliptical cross-section, the major axis of the ellipses projecting radially with respect to the circular array of outlet nozzles;
- said nozzle plate further comprises an interior surface, the portions of said interior surface which are contiguous with the portions of said nozzles which are located radially outwardly with respect to the center of said nozzle plate have a tapered edge such that said nozzles have a cross-section with one edge having the shape of an inclined bellmouth.
Parent Case Info
This is a continuation of application Ser. No. 519,930, filed Aug. 3, 1983, now abandoned.
US Referenced Citations (6)
Continuations (1)
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Number |
Date |
Country |
Parent |
519930 |
Aug 1983 |
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