Flow Optimized Vane Pumps

A vane pump and vane technology, applied in the field of flow-optimized vane pumps, can solve problems affecting the volumetric efficiency of the pump, achieve the effects of suppressing the decline in volumetric efficiency, reducing the generation of high-pressure peaks, and preventing hydraulic short circuits
CN111556928BActive Publication Date: 2021-12-14尼得科GPM有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
尼得科GPM有限公司
Publication Date
2021-12-14

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Abstract

The invention relates to a vane pump for conveying liquid (especially viscous oil), comprising: a rotor (2) having a sliding groove (23) in which a slidable vane (3) is accommodated and which can be moved relative to the radius of the rotor ( r) indentation; the pump housing (1) with the pump chamber (10) housing the rotor (2); and the inlet (5) and outlet (6) towards at least The end side of the rotor (2) is open into the pump chamber (10); wherein around the circumference of the rotor (2) radial elevations (21) protruding towards the sliding slots (23) form the recesses to the retractable vanes (3) The rotor radius (r) on either side, and at the radially raised portion (21), the radially recessed portion (20) is recessed relative to the rotor radius (r). In the radial elevation (21), on at least one end side of the rotor (2) to which the inlet (5) and the outlet (6) are open, a recess (4) is formed which provides a Rotary servo control geometry for pressure peaks in the small vane chamber.
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Description

technical field

[0001] The invention relates to a flow-optimized vane pump with reduced pressure pulsations in the vane chamber. Background technique

[0002] In contrast to centrifugal pumps, rotary positive displacement pumps, such as vane pumps, in principle suffer pressure pulsations which arise during one revolution of the pump shaft from the sequence of the feed and discharge cycles. This pulsation is related to the initial pressure of the pump during load changes and flow characteristics of the flow being delivered from the inlet into the vane chamber and from the vane chamber to the outlet, and also to the internal pressure of the simultaneously closed vanes. In general, pulsating pressures in confined spaces or circuits of hydraulic systems cause problems such as reduced durability of sealing points or generation of noise with perceivable resonance.

[0003] The prior art discloses vane pumps with different specific geometries aimed at reducing pulsation. For exam...

Claims

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