Energy recovery device
AssigneeHydac Technology GmbH
InventorFrantisek Krnavek
Life of this patent
Estimating the term…
Abstract
A device for recovering energy, in particular potential energy in working machines, has a hydraulically actuatable working cylinder linked to a hydropneumatic storage. At least another working cylinder is provided. The two working cylinders are mutually linked by their rod end chambers to transfer fluid and are linked to a hydraulic circuit having at least one pump. The other working cylinder is also linked at its piston end chamber to a hydraulic circuit having a pump. The energy generated by the movements of the working machine can be effectively stored in a failure-proof manner and called back at defined moments in time.
Claims13
A device for recovering energy, comprising:
- a first hydraulically operable working cylinder having a first rod end chamber and a first piston end chamber;
- a hydropneumatic storage attached to said first piston end chamber of said first piston through a first line;
- a second hydraulically operable working cylinder having a second rod end chamber and a second piston end chamber;
- fluid carrying means for connecting and linking said first and second rod end chambers, and for connecting said second piston end chamber of said second cylinder to a hydraulic circuit with a pump;
- a cartridge valve coupling said storage to said first piston end chamber;
- and
- control means having a control distributor connected to a pressure relay, and having a control input attached to a low pressure branch means for cooperating with movable parts of a working machine, said control distributor being connected to said cartridge valve.
A device for recovering energy, comprising:
- a first hydraulically operable working cylinder having a first rod end chamber and a first piston end chamber;
- a hydropneumatic storage attached to said first piston end chamber of said first piston through a first line;
- a second hydraulically operable working cylinder having a second rod end chamber and a second piston end chamber;
- fluid carrying means for connecting and linking said first and second rod end chambers, and for connecting said second piston end chamber of said second cylinder to a hydraulic circuit with a pump;
- a first switching means between said first piston end chamber and said storage;
- and
- a reverse switching means between said first piston end chamber and said storage, said reverse switching means having a reservoir connection.
Dependencies are inferred from the claim text.