Side-channel pump

a side-channel pump and side-channel technology, applied in the direction of positive displacement liquid engine, piston pump, liquid fuel engine, etc., can solve the problems of reducing efficiency and affecting the service life of the pump, and achieve the effect of high efficiency of the side-channel pump and marked reduction of wear due to contaminated medium

Inactive Publication Date: 2005-03-10
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a pump with a unique design that reduces wear and tear caused by contaminated media. The pump has a part-annular channel with a larger diameter than the ring of blade chambers, which prevents direct contact between the main flow and any dirt particles. This design also prevents wear of the axial sealing surfaces in the blade chambers. The pump has a simple structure and is highly efficient, making it ideal for use in various industrial applications."

Problems solved by technology

The known side-channel pump has the disadvantage that, as seen from the axis of rotation of the rotor, the flow can penetrate between the rotor and the casing in the radially outer region.
The residual dirt contained in the medium leads to a wear of the axial sealing surfaces lying radially outside the conveying chamber and therefore to a reduction in efficiency.

Method used

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Examples

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Embodiment Construction

[0010] The fuel pump has a side-channel pump 2 according to the invention, driven by an electric motor 1. The side-channel pump 2 has a casing 3 with two casing parts 4, 5, between which a rotor 6 driven by the electric motor 1 is arranged rotatably. An inlet 7 and an outlet 8 are arranged in the casing 3. The rotor 6 has on its end faces two rings of blade chambers 10 delimited by guide blades 9. Blade chambers 10 located opposite one another are connected to one another. Part-annular channels 11 are arranged, opposite the rings of blade chambers 10, in the casing parts 4, 5. The part-annular channels 11 extend from the inlet 7 to the outlet 8 and, together with the blade chambers 10, form a conveying chamber for the conveyance of fuel. The fuel to be conveyed therefore flows through the side-channel pump 2 axially. When the rotor 6 rotates, this gives rise, in the conveying chamber, to circulation flows which are accelerated away from the axis of rotation of the rotor 6 in the bla...

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Abstract

The invention relates to a side-channel pump for transporting fuel in a motor vehicle. Said pump comprises a partial annular channel (11) located in housing sections (4, 5), said channel having a greater radius than a crown of vane chambers (10) that are located in the impeller (6). The vane chambers (10) and the partial annular channel (11) respectively have the same width. This prevents wear and tear to the sealing surfaces.

Description

BACKGROUND OF THE INVENTION [0001] The invention relates to a side-channel pump which is provided, in particular, for the conveyance of fuel in a motor vehicle, with a rotor rotating in a pump casing, with a ring of blade chambers which is arranged in one end face of the rotor, and with a part-annular channel arranged opposite the ring in the casing and extending from an inlet to an outlet. [0002] Such side-channel pumps are often used in fuel tanks of present-day motor vehicles and are known from practice. The part-annular channel and the blade chambers form a conveying chamber through which fuel is conveyed. When the rotor rotates, this gives rise, in a conveying chamber, to circulation flows radially outward from the radially inner region of the blade chamber, as seen from the axis of rotation of the rotor. [0003] The known side-channel pump has the disadvantage that, as seen from the axis of rotation of the rotor, the flow can penetrate between the rotor and the casing in the ra...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F04D5/00F04D29/18
CPCF04D29/188F04D5/002
InventorBURHENNE, SABINEDEICHMANN, JOHANNESJAEGER, BERNDMEISER, KARSTEN
OwnerSIEMENS AG