Hydroaccumulator
AssigneeHydac Technology GmbH
InventorNorbert Weber
Life of this patent
Estimating the term…
Abstract
A hydroaccumulator, especially a membrane accumulator, has an accumulator housing with two housing parts and a separating element in the housing. The separating element can be a separating membrane dividing the accumulator housing into a gas chamber and a fluid chamber. The gas chamber is connected to carry gas to and from gas refiller through a connection. The gas refiller is formed from an additional housing part connected to the accumulator housing to form a unit. The connection is at least one connecting opening in the accumulator housing connecting the interior of the additional housing part to the gas chamber. Additional gas accumulator volume is provided without otherwise conventional pipework to save money and installation space and avoid conventional leaks which occur in the area of the pipework.
Claims27
A hydroaccumulator, comprising:
- an accumulator housing having first and second housing parts;
- a separating element located in and dividing said accumulator housing into a gas chamber and a fluid chamber;
- a gas refilling chamber formed by at least one additional housing part connected with and forming a unit with the accumulator housing, said additional housing part overlapping an outer lateral peripheral side of said first housing part of said accumulator housing defining said gas chamber;
- and
- at least one connecting opening in said accumulator housing connecting said gas refilling chamber to said gas chamber.
A hydroaccumulator, comprising:
- an accumulator housing having first and second housing parts, said second housing part defining a fluid chamber and including a shoulder on a free edge facing said first housing part;
- a separating element located in and dividing said accumulator housing into a gas chamber and said fluid chamber;
- a gas refilling chamber formed by at least one additional housing part connected with and forming a unit with the accumulator housing, a free end of said additional housing part being seated on said shoulder;
- and
- at least one connecting opening in said accumulator housing connecting said gas refilling chamber to said gas chamber.
A hydroaccumulator, comprising:
- an accumulator housing having first and second housing parts;
- a separating element located in and dividing said accumulator housing into a gas chamber and a fluid chamber, said separating element being a separating membrane of elastomeric material;
- a gas refilling chamber formed by at least one additional housing part connected with and forming a unit with the accumulator housing;
- at least one connecting opening in said accumulator housing connecting said gas refilling chamber to said gas chamber;
- free ends of said first, second and additional housing parts connected to one another by a common connecting point;
- and
- a mounting ring holding said separating membrane and leaving said connecting point free on an inner peripheral side of said accumulator housing.
A hydroaccumulator, comprising:
- an accumulator housing having first and second housing parts;
- a separating element located in and dividing said accumulator housing into a gas chamber and a fluid chamber;
- a gas refilling chamber formed by at least one additional housing part connected with and forming a unit with the accumulator housing;
- at least one connecting opening in said accumulator housing connecting said gas refilling chamber to said gas chamber;
- free ends of said first, second and additional housing parts connected to one another by a common connecting point, said first housing part defining said gas chamber and including a step-shaped shoulder on said free end thereof covering said connecting point.
Dependencies are inferred from the claim text.