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US 9,394,898 B2Granted
Spring element and corresponding piston pump for delivering fluids
AssigneeRobert Bosch GmbH
InventorsReiner Fellmeth, Juergen Haecker, Oliver Gaertner, Heiko Jahn, Marc Zimmermann, Harald Hermann, Rolf Stotz, Daniel Gosse
Life of this patent
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Abstract
A spring element includes a disc-shaped basic body, in which at least one spring bridge is inserted. The basic body has at least one dynamic throttle point to throttle a fluid flow. The basic body has a resilient configuration in a region of the at least one throttle point. Accordingly, an opening cross section of the at least one throttle point is configured to be set variably depending on a pressure difference.
Claims10
A spring element comprising:
- a disk-shaped basic body;
- and
- at least one spring member formed in the basic body,
- wherein the basic body includes at least one dynamic throttle point configured to throttle a fluid flow, wherein the fluid flow is in a direction perpendicular to the disk-shaped basic body, and
- wherein the basic body has a resilient configuration to provide a first spring action in an opposite direction of the fluid flow and to provide a second spring action perpendicular to the first spring action in a region of the at least one throttle point such that an opening cross section of the at least one throttle point perpendicular to the direction of the fluid flow is variably adjustable as a function of a pressure difference.
2 more elements
A piston pump for delivering fluids, comprising:
- a piston;
- a cylinder element;
- and
- a pressure chamber arranged between an inlet valve and an outlet valve and closed by a cover, the outlet valve including a closing element configured to move against a force of a spring element and the outlet valve including a mechanism configured to throttle fluid flow, wherein the fluid flow is in a direction from the inlet valve to the outlet valve, the mechanism provided downstream of the outlet valve in the fluid flow,
- wherein the spring element of the outlet valve includes:
- a disk-shaped basic body;
- and
- at least one spring member formed in the basic body,
- wherein the basic body includes at least one dynamic throttle point configured to throttle a fluid flow, and
- wherein the basic body has a resilient configuration to provide a first spring action in an opposite direction of the fluid flow and to provide a second spring action perpendicular to the first spring action in a region of the at least one throttle point such that an opening cross section of the at least one throttle point perpendicular to the direction of the fluid flow is variably adjustable as a function of a pressure difference.
7 more elements
Dependencies are inferred from the claim text.