Pump device with deformable pump ring

US10533418B2 · kind B2 · utility

Assignee

• ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

• Markus Braxmaier · Villingen-Schwenningen, DE
• Hassan Ghodsi-Khameneh · Offenburg, DE
• Daniel Hauer · Ortenberg, DE
• Juergen Herr · St. Georgen, DE
• Marc Jeuck · Laufenburg (Baden), DE
• Gerhard Kuhnert · Villingen-Schwenningen, DE
• Wolfgang Laufer · Schenkenzell, DE
• Mario Staiger · Tennenbronn, DE

Key dates

• Filing date: Mar 31, 2016
• Grant date: Jan 14, 2020
• Expiry date: Sep 19, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2240/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a pump device for pumping a liquid having a hydraulics housing (12), in which a pump ring (14), a pump ring support (16), and an eccentric (18) are accommodated, which eccentric is to be driven by a shaft (20), which defines an axial and a radial direction, wherein the pump ring (14) has a first axial side (45) and a second axial side (47), wherein the hydraulics housing (12) comprises an annular portion (22) and a first and a second lateral section (24, 26), wherein the two lateral sections (24, 26) are arranged opposite each other, wherein the pump ring (14) is arranged, at least in some portions, between the two lateral sections (24, 26) of the hydraulics housing (12), and wherein on the first axial side (45) and the second axial side (47), the profile of the pump ring (14) in each case follows a contour with an S-formed curve (32) with a convex section (34) and a concave section (36), wherein the convex section (34) lies further outwards in a radial direction of the shaft (20) in comparison with the concave section (36).