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US 7,497,656 B2Granted
Supply pump
AssigneeSiemens Aktiengesellschaft
InventorsSabine Burhenne, Johannes Deichmann, Bernd Jaeger, Karsten Meiser
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Abstract
The invention relates to a supply pump embodied as a side channel pump, whereby several sections (14-16) forming the cross-section of a supply chamber (13) each comprise radii. The origins of the external radii are arranged on the front face of a pump housing facing the one rotor. The sections (14-16) comprise common tangents in the adjacent regions thereof. A particularly high efficiency for the supply pump can thus be guaranteed.
Claims5
A supply pump, comprising:
- a pump housing;
- and
- a driven impeller rotatably arranged in said pump housing, at least one ring of vane chambers being defined on said impeller,
- wherein said pump housing includes an inlet channel, an outlet channel, and a channel surface defining a partially annular channel opposing said at least one ring of vane chambers and extending from said inlet channel to said outlet channel, and
- wherein said partially annular channel has a cross section including a plurality of sections, each section of said plurality of sections having a constant radius, every two adjacent sections of said plurality of sections having different radii.
2 more elements
Dependencies are inferred from the claim text.