摘要:
Die Erfindung betrifft ein Druckregelventil (1), umfassend einen Ventilkörper (2) mit einem eine Ventileinrichtung (16) aufweisenden Steuerraum (9) und einer Magnetspule (4), wobei radial verlaufende Tankbohrungen (20b) in dem Steuerraum (9) enden, eine durch Bestromung der Magnetspule (4) in einem Ankerraum (6) verschiebbaren Anker (5), einen durch den Ventilkörper (2) geführten Ankerstößel (7), welcher einenends mit dem Anker (5) in einer Wirkverbindung steht und andernends zur Betätigung der Ventileinrichtung (16) in den Steuerraum (9) des Ventilkörpers (2) ragt, wobei zur Herstellung eines Druckausgleichs zwischen dem Ankerraum (6) und dem Steuerraum (9) der Anker (5) mit wenigstens einer axialen Druckausgleichsbohrung (10) ausgebildet ist und der Ankerstößel (7) in einem steuerraumseitigen Lager (8b) des Ventilkörpers (2) mit wenigstens einer Druckausgleichsnut (14a, 14b) gelagert ist. Erfindungsgemäß ist vorgesehen, dass die Mündung (14aa, 14bb) der wenigstens einen Druckausgleichsnut (14a, 14b) des steuerraumseitigen Lagers (8b) in den Steuerraum (9) mit der Mündung (20bb) der wenigstens einen Tankbohrung (20b) in den Steuerraum (9) fluchtend oder zumindest annähernd fluchtend angeordnet ist.
摘要:
Die Erfindung betrifft ein Druckregelventil zur Regelung des Drucks in einem Hochdruck-Kraftstoffspeicher einer Brennkraftmaschine, insbesondere in Common-Rail-Einspritzsystemen, mit einem in einer Bohrung (1) axial verschiebbar geführten und von der Druckkraft einer Feder (2) in Öffnungsrichtung beaufschlagten Ventilkolben (3), der bei Bestromung einer Magnetspule (4) entgegen der Druckkraft der Feder (2) und entgegen dem im Hochdruck-Kraftstoffspeicher herrschenden Druck eine axiale Verschiebung in Richtung eines ersten Ventilsitzes (5) erfährt, wobei der Ventilkolben auf ein mit dem Ventilsitz (5) zusammenwirkendes Ventildichtelement (6) einwirkt, Erfindungsgemäß ist zur Realisierung einer Notfahrt ein zweiter, in einer Ventilplatte (7) ausgebildeter Ventilsitz (8) vorgesehen, der mit dem Ventildichtelement (6) in der Weise zusammenwirkt, dass bei fehlender Bestromung der Magnetspule (4) der im Hochdruck-Kraftstoffspeicher herrschende Druck das Ventildichtelement (6) in dichtender Anlage mit dem zweiten Ventilsitz (8) hält.
摘要:
The invention relates to a valve comprising a closing body (25) that is located in a valve chamber (10). The valve chamber (10) is delimited at one end by an opposing wall (16) and at the other end by a piston (18). The latter (18) is pressed towards the opposing wall (16) by a pressure device (26). The closing body (25) is thus pressed against a centring seat (15), which is aligned axially with the valve seat (14). The pressure device (26) enables the valve to close securely even when a small pressure differential prevails between the valve inlet (17) and valve outlet (19).
摘要:
The invention relates to an electromagnetic valve (1) which has a compact structure and which is particularly economical to produce. Said valve has two pole shoes, whereby at least one of the two pole shoes (3, 4) is provided with a first fluid line (5) and a first valve seat (7) and the fluid line is connected to a valve chamber (24) by means of a valve seat, wherein a valve body (9) can be displaced between at least two switch positions between the valve seat and at least one other stop surface (8). The invention is characterised in that at least one distancing element (15) is provided in the region of the valve chamber (24), determining the distance of the valve face (7) from the other stop surface (8).
摘要:
Es wird ein bistabiles elektromagnetisches Ventil vorgeschlagen, das in Kältemittelkreisläufen einzusetzen ist. Das Ventil ist mit besonders wenig Aufwand herzustellen und dabei zuverlässig dicht. Dies wird erfindungsgemäß dadurch erreicht, dass die Außenwand der Ventilkammer (7) durch einen zylindrischen Rohrkörper (2) gebildet ist, der sich wenigstens über die in den zylindrischen Rohrkörper (2) eingesetzten Polschuhe (5, 6) hinaus erstreckt, wobei wenigstens ein Ende des Rohrkörpers (2) einen Rohranschluss (11, 20) für das Fluid bildet.
摘要:
The invention relates to a glue valve and a method for controlling same, comprising a closing organ (20) which can be actuated in a controllable manner and with which the valve (10) can be switched back and forth between an open position and a closed position, and comprising a heat source (14a, 14b) with which glue, in particular hot glue, can be heated, said glue being conductable through the glue valve (10). The valve (10) has at least two electromagnets (14a, 14a) which can be supplied with electric current independently of each other, which are arranged along a common axis, and each of which comprises at least one spool (15a, 15b), said closing organ (20) being actuatable with said electromagnets and the glue that can be conducted through the valve (10) being heatable with said electromagnets. Both electromagnets (14a, 14b) are positioned and designed such that the magnetic effects of the spools (15a, 15b) of both electromagnets (14a, 14b) either strengthen or at least partially, preferably completely, neutralize each other along the common axis dependent on the current supply to said magnets.
摘要:
The invention describes a solenoid valve unit for shutting off or enabling a throughflow of a medium along a hollow duct (2), which medium flows along the hollow duct under pressure, having at least one first magnet unit (1) which is fixedly arranged along the hollow duct and which is of hollow cylindrical design and, in an axial section, is arranged along the hollow duct in such a way that the first magnet unit radially completely surrounds the hollow duct and the first magnet unit has, at the downstream end thereof, a flow opening (5) which is round in cross section, and also having a second magnet unit (8) which is mounted so as to be movable with respect to the first magnet unit and which is embodied as a ball, the ball diameter of which second magnet unit (8) is greater than the flow opening diameter of the first magnet unit and which second magnet unit (8) can be placed in indirect or direct contact with the first magnet unit, and thereby seals off the hollow duct in a fluid-tight manner, on account of an attractive magnet force between the two magnet units, while the medium is loaded under pressure counter to the direction of action of the magnet force on the first magnet unit. The invention is characterized in that the flow opening which is circular in cross section is adjoined indirectly or directly by a contour surface (4) which is angled with respect to a plane (3) which can be assigned to the flow opening, along which contour surface (4) the second magnet unit which is formed in the manner of a ball can be deflected axially and radially relative to the flow opening.
摘要:
The disclosed fluid filter screen assembly includes a filter body with an embedded filter screen, the filter screen being disposed in a fluid flow path between flow inlet and flow outlet openings in the filter body. A magnet effectively in contact with the filter screen increases the capacity of the filter assembly to separate particles from the fluid flow path.