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US 6,471,466 B2Granted
Feed pump
AssigneeMannesmann VDO AG
InventorsPeter Marx, Hans Dieter Wilhelm, Holger Barth
Life of this patent
Estimating the term…
Abstract
A feed pump includes an impeller with two rings of guide blades delimiting blade chambers. The rings of guide blades concentrically surrounding one another and have different angular intervals between guide blades. The angular intervals between the guide blades of each ring vary within a range of values and ranges of values of each ring of guide blades is different to avoid the additions of noise emissions the feed pump consequently has noises which cause particularly little disturbance.
Claims7
A feed pump, comprising:
- a pump housing having at least one wall and an impeller rotatably arranged in said pump housing and having at least one end face;
- a plurality of rings of blade chambers arranged on said at least one end face of said impeller;
- feed channels arranged in said at least one wall of the pump casing opposite said plural rings of blade chambers on said at least one end face;
- and
- guide blades arranged on said impeller and delimiting circumferential ends of said blade chambers, wherein angular intervals between adjacent ones of said guide blades in each of said plural rings of blade chambers vary according to a stochastic distribution.
2 more elements
Dependencies are inferred from the claim text.