US 8,539,984 B2 · Hydraulic accumulator, in particular a membrane accumulator

Abstract

A hydraulic accumulator, preferably a membrane accumulator, in particular for damping pulsations in fluid circuits, includes an accumulator housing (12) with at least one inlet (14) and an outlet (16) for the fluid for damping. A separating element (18), preferably in the form of a membrane, separates a gas reservoir (20) from a fluid chamber (22) within the accumulator housing (12). A hydraulic accumulator with high working capacity of high reliability which little space requirement despite high accumulation capacity for the working gas in the gas reservoir (20) can be achieved. A support device (24) within the accumulator housing (12), extends within the gas reservoir (20) and forms a possible support for the separating element (18). The gas reservoir (20) of the accumulator housing (12) is sufficiently large in dimension that the total necessary gas volume is retained within the accumulator housing (12) itself. The membrane is formed from an elastic material, in particular a rubber material of polytetrafluoroethylene or compounds thereof, as a gas barrier layer.

Claims13

Dependent claims

A hydraulic accumulator, comprising:

an accumulator housing having at least one inlet and one outlet for fluid to be damped, and having a gas chamber and a fluid chamber therein, said gas chamber within said housing storing an entire volume of gas for the hydraulic accumulator;
a membrane separating element inside said accumulator housing separating said gas chamber and said fluid chamber;
a mounting device inside said accumulator housing extending one of within said gas chamber and along a limit of said gas chamber depending on positioning of said separating element, said separating element being supported on said mounting device;
a closing plate provided at a center of said separating element and movable between an open position allowing fluid to flow into and out of said fluid chamber through said inlet and outlet and a closed position preventing fluid flow into and out of said fluid chamber through said inlet and said outlet, said closing plate being rigidly connected to said separating element by a bolted connection;
and
a through opening in said mounting device for engagement of a part of said bolted connection.

3 more elements

Dependencies are inferred from the claim text.

Hydraulic accumulator, in particular a membrane accumulator

Life of this patent

Hydraulic accumulator, in particular a membrane accumulator

Life of this patent

Abstract

Claims13