초록 ▼

A valve, particularly a proportional pressure control valve for controlling fluid flows, includes a valve housing (10) having at least three fluid-conducting connections in the form of a pump connection (P), a use connection (A) and of a tank (T) connection. To connect the pump connection (T) to the

A valve, particularly a proportional pressure control valve for controlling fluid flows, includes a valve housing (10) having at least three fluid-conducting connections in the form of a pump connection (P), a use connection (A) and of a tank (T) connection. To connect the pump connection (T) to the use connection (A) and the use connection (A) to the tank connection (T), a control piston (18) can be guided in a longitudinally displaceable manner inside the valve housing (10). This control piston is provided for establishing a fluid-conducting connection between at least one of the connections (P) and a pilot chamber (20) of a pilot valve (22) having a connecting channel (24). A valve part (40) of the pilot valve (22) is guided in the pilot chamber (20) in a longitudinally displaceable manner. The connecting channel (24) has a throttle in the direction of the pilot chamber (20) of the pilot valve (22) with its valve part. A guiding device (38) oriented toward the pilot chamber (20) and provided for guiding the fluid flow is provided next to the throttle to divert the fluid flow, conveyed inside the connecting channel (24) and flowing toward the valve part (40), at least partially away from this valve part.

대표청구항 ▼

1. A valve, comprising: a valve housing including a pump port, a use port and a tank port;a control piston guided for longitudinal movement within said valve housing for selective fluid connection of said pump port to said use port and of said use port to said tank port, said control piston having a

1. A valve, comprising: a valve housing including a pump port, a use port and a tank port;a control piston guided for longitudinal movement within said valve housing for selective fluid connection of said pump port to said use port and of said use port to said tank port, said control piston having a connecting channel;a pilot valve in said valve housing having a pilot chamber and a pilot valve part guided for longitudinal movement in said pilot chamber, said connecting channel connecting at least one of said ports with said pilot chamber in fluid communication;a first throttle in said connecting channel in a direction of and upstream of said pilot chamber; anda guide in said connecting channel in a direction of and upstream of said pilot chamber, said guide having at least one deflection channel extending obliquely to said connecting channel to deflect fluid flowing through said connecting channel and said guide away from said pilot valve part. 2. A valve according to claim 1 wherein said first throttle comprises an orifice; andsaid guide comprises an atomizer. 3. A valve according to claim 1 wherein said first throttle comprises an orifice; andsaid guide comprises first and second components separately fixed in said connecting channel. 4. A valve according to claim 1 wherein said first throttle comprises an orifice, and a filter part for a fluid stream on a side of said first throttle opposite said guide. 5. A valve according to claim 2 wherein at least one of said atomizer and said deflection channel having a second throttle having an orifice. 6. A valve according to claim 1 wherein said pilot valve is coupled to and actuated by a magnetic system. 7. A valve according to claim 6 wherein said magnetic system comprises a proportional magnetic system. 8. A valve according to claim 1 wherein a valve seat is mounted stationary in said valve housing, and is connected in fluid communication with said pilot chamber; andsaid pilot valve part is movable into and spring biased toward sealing contact with said valve seat. 9. A valve according to claim 1 wherein said pump port, said use port and said tank port extend through said valve housing in radial directions thereof. 10. A valve according to claim 1 wherein the valve is a proportional pressure control valve. 11. A valve according to claim 1 wherein said deflection channel extends at an angle from adjacent a longitudinal axis of said control piston radially outwardly away from and axially toward said pilot valve part.