# US 9,752,700 B2 · Valve device and use of such a valve device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,700 B2 - Document ID: US9752700B2 - Status: Granted - Kind: B2 - Application number: 14/442,496 - Filed: 2013-11-13 - Published: 2016-09-22 - Granted: 2017-09-05 - Earliest claimed: 2012-11-15 - Assignees: ETO Magnetic GmbH - Applicants: Eto Magnetic GmbH - Inventors: Peter Vincon - Web page: https://patentgrep.com/patent/US9752700B2 ## CPC - F16K 31/1221: {one side of the piston being spring-loaded} - F01P 7/14: the coolant being liquid - F04B 7/0076: {the members being actuated by electro-magnetic means} - F04B 17/042: {the solenoid motor being separated from the fluid flow} - F04B 17/044: {using solenoids directly actuating the piston} - F04B 53/10: Valves; Arrangement of valves - F15B 11/003: {Systems with load-holding valves} - F16K 15/028: {the valve member consisting only of a predominantly disc-shaped flat element} - F16K 31/1223: {one side of the piston being acted upon by the circulating fluid} - F01P 2007/146: {using valves} - F15B 13/042: operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)} - F15B 15/18: Combined units comprising both motor and pump - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ## Abstract A valve device, comprising a valve tappet (18), which causes a controlled opening or blocking of a fluid flow channel (16) in an engagement position on a valve seat (22) and which can be brought from a starting position to the engagement position as a reaction to an application of pressure by means of a pressure fluid, wherein the pressure fluid is conveyed by electromagnetically driven pumping element (24) into a pressure chamber (44) associated with the valve tappet in such a way that the application of pressure for driving the valve tappet is accomplished by a plurality of pumping strokes of the pumping element, which has a conveying piston (26), in particular a reciprocating piston. ## Claims ### Claim 1 A valve device comprising a valve tappet (18) that effects a controlled opening or blocking of a fluid flow channel (16) in an engaged position on a valve seat (22), which is movable from a starting position into the engagement position in response to pressure loading with a pressure fluid, wherein pressure fluid drawn from the fluid flow channel is conveyed by electromagnetically driven pumping means (24) into a pressure chamber (44) assigned to the valve tappet in such manner that the pressurization for driving the valve tappet is achieved through multiple pump strokes of the pumping means that comprise a delivery piston (26). ### Claim 2 (depends on 1) The device according to claim 1, wherein the delivery piston comprises a reciprocating piston (26) that executes a translationally oscillating movement, and which functions as an anchor of a coil unit (32) that is provided in stationary manner and is actuatable by application of a current. ### Claim 3 (depends on 2) The device according to claim 2, wherein a supply of the current has a first and a second signal level, each being different from a non-energized state, for defining pump stroke, and a frequency of signal change between the first and the second signal levels determines an oscillation frequency of movement of the reciprocating piston. ### Claim 4 (depends on 2) The device according to claim 2, wherein the valve tappet (18) is biased toward the starting position against a restoring force of a return spring means (48), and venting means (50) are assigned to the pressure chamber and arranged such that in a non-energised state of the coil unit, load is removed from the pressure fluid in the pressure chamber. ### Claim 5 (depends on 4) The device according to claim 4, wherein the venting means (50) are actuated in response to an actuating position of the reciprocating piston in a non-energized state, directly or via a mechanical connecting element (54) cooperating with the reciprocating piston. ### Claim 6 (depends on 1) The device according to claim 1, wherein an intake (34) for the pressure fluid is assigned to the pumping means. ### Claim 7 (depends on 6) The device according to claim 6, wherein the intake is able to be opened to the fluid flow channel (16). ### Claim 8 (depends on 1) The device according to claim 1, wherein control means assigned to the pumping means are designed and/or configured such that the valve tappet is driven in response to at least 10 pump strokes. ### Claim 9 (depends on 8) The device according to claim 8, wherein the control means assigned to the pumping means are designed and/or configured such that the valve tappet is driven in response to at least 20 pump strokes. ### Claim 10 (depends on 8) The device according to claim 8, wherein the control means assigned to the pumping means are designed and/or configured such that the valve tappet is driven in response to at least 30 pump strokes. ### Claim 11 (depends on 1) The device according to claim 1, wherein a pressure relief valve (48) having a predetermined opening threshold is assigned to the pressure chamber in such manner that the pump strokes can be executed even in the engaged position. ### Claim 12 (depends on 1) The device according to claim 1, wherein the delivery piston (26) is a reciprocating piston.