Valve device for throttling a pressure medium flow, and damping device for damping pressure pulsations

Patent metadata

Field	Value
Publication number	US-10508754-B2
Application number	US-201615745188-A
Country	US
Kind code	B2
Filing date	Aug 1, 2016
Priority date	Sep 28, 2015
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A valve device includes a valve body that forms a throttle cross section and a valve element that sets the throttle cross section depending on the pressure. To avoid pulsation-induced noises, the valve element is configured with a flow-deflecting member that causes action upon the valve element with a transverse force. The flow-deflecting member prevents noise-causing vibrations of the valve element and permits a lower throttling effect of the valve device, in particular when volumetric flows are increased. A damping device, in particular for damping pressure pulsations in a brake circuit of a slip-controllable vehicle brake system, includes the valve device.

First claim

The invention claimed is:

1. A valve device, comprising:
a valve body that forms a throttle cross-section surrounded by a valve seat;
a valve element that is received movably in the valve body, that sets the throttle cross-section in response to prevailing pressure conditions, and that includes:
a first flow-deflecting member, in the form of at least one groove formed in a body portion of the valve element, that causes a transverse force to act upon the valve element transversely to a throughflow direction of the valve device in response to a flow of pressure medium around the valve element; and
a second flow deflecting member in the form of at least one wing-like protrusion extending from the body portion, such that the flow of pressure medium flows around the second flow deflecting member; and

an elastic return element that loads the valve element against the throughflow direction of the valve device.

2. The valve device as claimed in claim 1 , wherein the at least one wing-like protrusion is arranged on a transitional region from a first peripheral portion of the body portion of the valve element configured with the at least one groove to a second peripheral portion free from the at least one groove.

3. The valve device as claimed in claim 2 , wherein the at least one wing-like protrusion is formed on a conically configured portion of the body portion of the valve element and is oriented in the throughflow direction of the valve device.

4. The valve device as claimed in claim 2 , wherein respective contours of the at least one wing-like protrusion and of an inner wall of the valve body in a region immediately downstream of the throttle cross-section of the valve device are adapted to each other.

5. The valve device as claimed in claim 1 , wherein the at least one groove is formed on a periphery of a cylindrical portion of the body portion of the valve element and extends in the throughflow direction of the valve device.

6. The valve device as claimed in claim 1 , wherein the first and second flow-deflecting members are formed integrally with the valve element.

7. The valve device as claimed in claim 1 , wherein:
the at least one groove is arranged on at least one first peripheral portion of the body portion of the valve element; and
the body portion of valve element has at least one second peripheral portion that is free of the at least one groove.

8. The valve device as claimed in claim 1 , wherein the valve device is configured to throttle a pressure medium flow in a channel which conducts a pressure medium.

9. A damping device, comprising:
a valve device configured to throttle a pressure medium flow in a channel conducting a pressure medium, the valve device including:
a valve body that forms a throttle cross-section surrounded by a valve seat;
a valve element that is received movably in the valve body, that sets the throttle cross-section in response to prevailing pressure conditions, and that includes:
a first flow-deflecting member, in the form of at least one groove formed in a body portion of the valve element, that causes a transverse force to act upon the valve element transversely to a throughflow direction of the valve device in response to a flow of pressure medium around the valve element; and
a second flow deflecting member in the form of at least one wing-like protrusion extending from the body portion, such that the flow of pressure medium flows around the second flow deflecting member; and

an elastic return element that loads the valve element against the throughflow direction of the valve device; and

a pressure medium accumulator connected upstream of the valve device.

10. The damping device as claimed in claim 9 , wherein the damping device is configured to damp pressure pulsations in a brake circuit of a slip-controllable vehicle braking system.

Assignees

• Bosch Gmbh Robert

Inventors

• Norberg Jens
• Schellnegger Patrick
• Lechler Andreas

Classifications

• B60T17/04 Primary

  Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses (traction couplings involving joints for supply lines, electric circuits, or the like B60D1/62; couplings peculiar to railway vehicles for, or combined with, couplings or connectors for fluid conduits or electric cables B61G5/06; pipes, cut-off valves, couplings, air hoses per se F16C, F16K, F16L) · CPC title

• F16K1/14

  with ball-shaped valve member (check valves F16K15/04) · CPC title

• Y10T137/785

  With retarder or dashpot · CPC title

• F16K25/02

  Arrangements using fluid issuing from valve members or seats · CPC title

• F16K1/38

  of conical shape · CPC title