US 10,584,588 B2Granted

Pump device

Assigneeebm-papst St. Georgen GmbH & Co. KG

InventorsAlexander Hahn, Hassan Ghodsi-Khameneh

Life of this patent

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Abstract

Pump device has pump housing with annular portion; a deformable pump ring that defines annular pump chamber; a first connection and a second connection in fluid communication with the-pump chamber; an eccentric rotatable relative to the pump housing and arranged such that the eccentric deforms the-pump ring and pump ring presses against the annular to pump fluid along the-pump chamber from the-first to the-second connection depending on the current rotational position of the eccentric. A clamping element presses the-pump ring against the-annular portion of the pump housing in a clamping link region. The pump ring has at least one recess for accommodating at least part of the clamping element and is dimensioned to provide a distance between the radially inner side of the clamping element and the-pump ring.

Claims21

Dependent claims

A pump device (10) for pumping a fluid, comprising

a hydraulic housing (12) in which a pump ring (14) and an eccentric (18) are accommodated,
said eccentric (18) being connected via
a shaft (20) with a drive (140) in order to make possible a rotation of the eccentric (18) via the drive (140) and the shaft (20),
said shaft (20) defining an axial direction (21) and a radial direction of the pump device (10),
said hydraulic housing (12) including
an annular portion (22),
a first lateral section (24) and
a second lateral section (26), said annular portion having a first axial side (93) and a second axial side (94), said first lateral section (24) being arranged on the first axial side (93) and said second lateral section (26) being arranged on the second axial side (94),
said pump ring (14) being arranged, at least in portions, between the first lateral section (24) and the second lateral section (26), and said second lateral section (26) being designed as a drive flange for the drive (140);
a clamping element (114) which is configured to statically press the pump ring (14) against the annular portion (22) of the hydraulic housing (12) in a clamping element region (45);
and
a recess (47) provided on the inner side of the first lateral section (24), said recess (47) being configured to accommodate the clamping element (114) at least partially, and thereby support it;
wherein the recess (47) is configured in the manner of a blind hole, in order to prevent the escape of a fluid which is being transported.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/557,126Filed 31 Mar 2016
Priority: DE 10 2015 106 61429 Apr 2015
Published: US 2018/0045051 A115 Feb 2018
Granted: 10 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F01C 5/02
Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable: the resiliently-deformable wall being…
F04C 5/00
Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently
F16C 19/54
Bearings with rolling contact, for exclusively rotary movement: systems consisting of a plurality of bearings with rolling friction
F04C 2240/30
Components: casings or housings