Separator and hydraulic accumulator having such a separator
AssigneeHydac Technology GmbH
InventorsPeter Kloft, Torsten Kusserow
Life of this patent
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Abstract
Separator and hydraulic accumulator having such a separator. A separator, in particular for a hydraulic accumulator, such as a bellows accumulator, which is produced by a 3D printing process, consisting of one single diaphragm, which, when viewed in cross section, is deflected in an arcuate shape to form a multitude of bellows pleats at deflection points, which delimit the bellows pleats on the outside and the inside, and in that, to obtain an isotensoid or essentially isotensoid stress profile in the diaphragm, the notional extensions of the diaphragm surfaces adjacent to each deflection point form an acute angle with each other, at least in an initial state.
Claims18
A hydraulic accumulator, having an accumulator housing and a bellows-shaped separator disposed therein, which separates two media chambers from each other inside the accumulator housing, wherein the separator is produced by a 3D printing process, consisting of one single diaphragm;
- wherein the diaphragm, when viewed in cross section, is deflected in an arcuate shape to form a multitude of bellows pleats at deflection points, which delimit the bellows pleats on an outside and an inside;
- wherein to obtain an isotensoid or essentially isotensoid stress profile in the diaphragm, notional extensions of the diaphragm surfaces adjacent to each deflection point form an acute angle (a) with each other at least in an initial state;
- wherein
- the individual diaphragm surface between two adjacent deflection points, which are located on opposite sides of the diaphragm, has an undulating course, wherein the diaphragm material of the diaphragm is reduced in wall thickness between two adjacent deflection points located on any common side of the diaphragm.
A separator for a bellows accumulator, which separator movably separates a gas media chamber and a fluid media chamber from each other, consisting of one single diaphragm;
- wherein the diaphragm, when viewed in cross section, is deflected in an arcuate shape to form a multitude of bellows pleats at deflection points, which delimit the bellows pleats on an outside and an inside;
- wherein to obtain an isotensoid or essentially isotensoid stress profile in the diaphragm, notional extensions of the diaphragm surfaces adjacent to each deflection point form an acute angle with each other at least in an initial state;
- wherein
- the individual diaphragm surface between two adjacent deflection points, which are located on opposite sides of the diaphragm, has an undulating course, wherein the diaphragm material of the diaphragm is reduced in wall thickness between two adjacent deflection points located on any common side of the diaphragm.
A separator for a bellows accumulator with an accumulator housing for receiving the separator therein, the separator consisting of one single diaphragm;
- wherein
- the diaphragm, when viewed in cross section, is deflected in an arcuate shape to form a multitude of bellows pleats at deflection points, which delimit the bellows pleats on an outside and an inside;
- wherein
- to obtain an isotensoid or essentially isotensoid stress profile in the diaphragm, notional extensions of the diaphragm surfaces adjacent to each deflection point form an acute angle (α) with each other at least in an initial state;
- wherein
- the acute angle (α) is ≤30°;
- and wherein
- the diaphragm material of the diaphragm is reduced in wall thickness between two adjacent deflection points located on any common side of the diaphragm, and the individual diaphragm surface between two adjacent deflection points, which are located on opposite sides of the diaphragm, has an undulating course.
A separator, which is produced by a 3D printing process, consisting of one single diaphragm;
- wherein
- the diaphragm, when viewed in cross section, is deflected in an arcuate shape to form a multitude of bellows pleats at deflection points, which delimit the bellows pleats on an outside and an inside;
- wherein
- to obtain an isotensoid or essentially isotensoid stress profile in the diaphragm, notional extensions of the diaphragm surfaces adjacent to each deflection point form an acute angle (α) with each other at least in an initial state;
- wherein
- the diaphragm material of the diaphragm is reduced in wall thickness between two adjacent deflection points located on any common side of the diaphragm;
- and wherein the individual diaphragm surface between two adjacent deflection points, which are located on opposite sides of the diaphragm, has an undulating course.
Dependencies are inferred from the claim text.