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US 9,816,629 B2Granted
Pressure control valve
AssigneeSVM Schultz Verwaltungs-GmbH & Co. KG
InventorsGeorg Scherer, Helmut Mang
Life of this patent
Estimating the term…
Abstract
The invention relates to a pressure control valve having a control element that includes a valve component and a drive component. The valve component includes an orifice that, in a first position, may be closed by the control element, disconnecting a control chamber from a return chamber, such that a control pressure acts on a first control surface of the control element and in a second position, the orifice may be partially opened, so that the control and return chambers are fluidically connected to each other, such that the control pressure in the control chamber acts on a second control surface of the control element.
Claims21
A pressure control valve, comprising:
- a valve component comprising:
- a control chamber having a control pressure,
- a return chamber having a return pressure,
- an orifice extending solely between the control chamber and the return chamber and having a longitudinal axis and comprising at least a first orifice region in a direction of the longitudinal axis and a second orifice region in the direction of the longitudinal axis, the orifice regions spaced apart from each other and having different respective cross-sectional areas,
- a control element comprising at least a first control element region, including a first control surface, and a second control element region, including a second control surface, the control element regions spaced apart from each other in the direction of the longitudinal axis and having different respective cross-sectional areas, such that the second control surface is larger than the first control surface,
- wherein the first control surface protruding into the orifice cooperates with the first orifice region to close the orifice, thereby preventing flow between the control chamber and the return chamber, and the second control surface cooperates with the second orifice region to control pressure between the control chamber and the return chamber, and
- a drive component for the control element,
- wherein, during operation of the control valve, the first control surface and a surface of the first orifice region remain parallel to each other, and the second control surface and a surface of the second orifice region remain parallel to each other.
5 more elements
A pressure control valve, comprising:
- a valve component comprising:
- a control chamber having a control pressure,
- a return chamber having a return pressure,
- an orifice extending solely between the control chamber and the return chamber and having a longitudinal axis and comprising at least a first orifice region in a direction of the longitudinal axis and a second orifice region in the direction of the longitudinal axis, the orifice regions spaced apart from each other and having different respective cross-sectional areas,
- a control element comprising at least a first control element region, including a first control surface, and a second control element region, including a second control surface, the control element regions spaced apart from each other in the direction of the longitudinal axis and having different respective cross-sectional areas, such that the second control surface is larger than the first control surface,
- wherein the first control surface protruding into the orifice cooperates with the first orifice region to close the orifice, thereby preventing flow between the control chamber and the return chamber, and the second control surface cooperates with the second orifice region to control pressure between the control chamber and the return chamber, and
- a drive component for the control element,
- wherein during operation of the control valve, the control pressure is greater than or equal to the return pressure, and
- (i) in a first position, the orifice is closed by the control element, such that the first control surface and a surface of the first orifice region remain parallel to each other, preventing fluid communication between the control chamber and the return chamber and the control pressure acts on the first control surface, and
- (ii) in a second, controlled position, the orifice is partially open, such that the second control surface and a surface of the second orifice region remain parallel to each other, the control chamber and the return chamber are in fluid communication, and the control pressure acts on the second control surface, such that a distance between the first control surface and the second control surface is greater than a distance between the first orifice region and the second orifice region.
7 more elements
Dependencies are inferred from the claim text.