Device for choking a fluid flow and corresponding piston pump for delivering fluids
AssigneeRobert Bosch GmbH
InventorsStephan Steingass, Oliver Gaertner, Oliver Hennig, Vaclav Kocourek
Life of this patent
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Abstract
A device for choking a fluid flow includes a pot-like base body, in the base of which a first passage opening is arranged, and a closing body guided axially moveably in the pot-like base body against a spring force of a spring element and having a second passage opening that forms a static choke point with a predefined fixed opening cross section. The closing body in combination with the spring element and the first passage opening forms a dynamic choke point with a dynamic opening cross section that is variably adjustable depending on a pressure difference.
Claims9
A device for choking a fluid flow, comprising:
- a pot-like base body including a base having a first passage opening;
- an elastomer spring;
- and
- a closing body guided axially moveably in the pot-like base body against a spring force of the elastomer spring and having a second passage opening configured to form a static choke point with a predefined fixed opening cross section,
- wherein the elastomer spring is configured to delay a closing movement of the closing body in a targeted fashion,
- wherein the closing body in combination with the elastomer spring and the first passage opening forms a dynamic choke point with a dynamic opening cross section that is variably adjustable depending on a pressure difference.
A piston pump for delivering fluids, comprising:
- a piston;
- a pump cylinder;
- a pressure chamber arranged between an inlet valve and an outlet valve;
- and
- a device for choking a fluid flow, the device located downstream of the outlet valve in the fluid flow, the device including (i) a pot-like base body including a base having a first passage opening, (ii) an elastomer spring, and (iii) a closing body guided axially moveably in the pot-like base body against a spring force of the elastomer spring and having a second passage opening configured to form a static choke point with a predefined fixed opening cross section,
- wherein the elastomer spring is configured to delay a closing movement of the closing body in a targeted fashion,
- wherein the closing body in combination with the elastomer spring and the first passage opening forms a dynamic choke point with a dynamic opening cross section that is variably adjustable depending on a pressure difference.
Dependencies are inferred from the claim text.