Pressure accumulator, in particular pulsation damper

US8176940B2 · kind B2 · utility

Assignee

• Hydae Technology GmbH · DE

Inventor

• Markus Lehnert · Dillingen/Saar, DE

Key dates

• Filing date: Nov 14, 2006
• Grant date: May 15, 2012
• Expiry date: Jun 5, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B1/22
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A pressure accumulator, in particular a pulsation damper, has an accumulator housing (1) defining a longitudinal axis (3) and having an inflow opening (15) and an outflow opening (17) for a fluid. A gas space (23) for a working gas and a fluid space (33) are separated from one another inside the accumulator housing (1) in a gas-tight manner by a bellows-like separating member (21). The separating member (21) is connected at one end (25) to a lid (27) forming a fixed termination of the gas space (23) in relation to the housing and at its other end (29) to a piston part (31) axially movable in the accumulator housing (1) and forming a movable termination of the gas space (23). Working movements of the piston part (31) bring about changes in volume of the working spaces adjoining the separating member (21). Inflow opening (15) and outflow opening (17) are respectively provided at the one end and at the other end, opposite one another in the axial direction of the accumulator housing (1). Fluid can then flow through the accumulator housing (1) in its longitudinal direction and in the direction of the working movement of the piston part (31).