Impeller, centrifugal pump including the same, and aircraft fuel system including the centrifugal pump
A centrifugal pump and impeller blade technology, which is applied to components of pumping devices for elastic fluids, liquid fuel engines, pumps, etc., can solve problems such as inefficient pressurization and inefficient fuel pressurization.
Inactive Publication Date: 2013-12-25
HONEYWELL INT INC
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Problems solved by technology
At low fuel inlet pressures, large amounts of vaporized fuel can coexist with liquid fuel at the fuel inlet and may result in inefficient pressurization of the fuel
As a result, insufficient pressure may be achieved in the pressurized fuel based on a large amount of vaporized fuel at the fuel inlet, or the pressurization may be inefficient
Method used
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[0014] The following detailed description is merely exemplary in nature and is not intended to limit the invention, its application or uses. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
[0015] An impeller, a centrifugal pump including the impeller, and an aircraft fuel system including the centrifugal pump are provided herein. The impeller maximizes centrifugal pump efficiency, especially when the fluid input has a high vaporized fluid content, by separating at least some of the vaporized fluid traveling past the impeller in the guide portion of the impeller and by returning this vaporized fluid through the central hub of the impeller to the upstream to achieve. By separating at least some of the vaporized fluid and returning it upstream, a higher proportion of liquid ends up in the fluid pressurized by the impeller. Since higher liquid-vapour content in the fluid to be pressurized...
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An impeller, a centrifugal pump, and an aircraft fuel system are provided. The impeller includes a central hub disposed along a rotational axis of the impeller and that defines an axial bore extending through at least a portion of the central hub along the rotational axis. The central hub further defines an opening to the axial bore at a leading end of the central hub. The impeller further includes an impeller section spaced from the leading end and that includes at least one impeller vane fixed to the central hub. The impeller further includes an inducer section that is disposed between the leading end of the central hub and the impeller section and that includes at least one inducer vane extending along an outer surface of the central hub. The central hub defines at least one radial aperture in the inducer section in fluid communication with the axial bore.
Description
technical field [0001] The present invention generally relates to an impeller for a centrifugal pump, a centrifugal pump including the impeller, and an aircraft fuel system including the centrifugal pump. In particular, the present invention relates to an impeller for maximizing the efficiency of a centrifugal pump, especially where the fluid input has vaporized fluid and liquid fluid, a centrifugal pump including the impeller, and an aircraft fuel system including the centrifugal pump. Background technique [0002] A typical gas turbine engine fuel supply system includes a fuel source, such as a fuel tank, and one or more pumps that draw fuel from the fuel tank and deliver the pressurized fuel through a main supply line to a fuel rail within the engine combustion chamber and fuel nozzles. These pumps may include aircraft or tank level pumps, booster pumps, and high pressure pumps. The booster pump is usually a centrifugal pump and the high pressure pump is usually a gear ...
Claims
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IPC IPC(8): F04D29/22
CPCF04D1/025F04D29/2277F04D29/2288
Inventor S.A.路易斯
Owner HONEYWELL INT INC