Abstract:
A magnetic valve (1) in which a valve housing (2), an armature tube (3), an inlet connection (4) and an outlet connection (5) form a single valve part is provided. An armature (9) made from a soft magnetic material is arranged movably inside the armature tube (3). A coil (16) is arranged externally to the armature tube (3) in such a manner that the armature tube (3) and the armature (9) are arranged inside the windings of the coil (16). A valve closing element (10) is connected to the armature (9) and is movable between a position in which it abuts a valve seat (8) and positions in which it does not abut the valve seat 8, thereby closing and opening the valve (1). In one embodiment, the flow path through the valve (1) from the inlet opening (6) to the outlet opening (7) does not pass through the windings of the coil (16). In another embodiment, the armature tube (3) comprises a closed end part (3a).
Abstract:
An electromagnetic actuator, especially for the closure member of a valve, contains a solenoid unit (1), which has a cylindrical cavity (5) closed at one end and open at the other end. An axially introduced guide tube (2) for a magnetically movable armature (3) is arrestable in the cavity (5) by means of a securing device (19) engageable in a first recess (7) under spring force. To simplify connection of the actuator with and separation of the actuator from the component to be adjusted, provision is made for the securing device (19) to lie completely within the solenoid unit (1) and to snap automatically into the first recess (7) when the guide tube (2) is moved into a desired position in the cavity (5) of the solenoid unit (1).
Abstract:
A common unit (10) for a refrigerant gas handling system (1) is described, the common unit (10) comprising an accumulator (4), a check valve (11), and a reversing valve (3). The accumulator (4), the check valve (11), and the reversing valve (3) are integrated in the common unit (10). Such a system should facilitate mounting of a VRF or VRV system and should be easy to produce. To this end, the common unit (10) is accommodated in a shell, wherein the shell can withstand at least twice atmospheric pressure, wherein the shell comprises a housing (14) that houses the check valve (11) and the reversing valve (3), an accumulator shell, and a tube (13) connecting the housing (14) and the accumulator shell.
Abstract:
The present invention relates to a check valve unit (1, 100, 200, 300, 400) having a shaft bearing body (10, 110, 210, 310, 410) with an at least substantially cylindrical mounting portion (11) extending along an axial direction (A) and an axially extending valve shaft (20, 120) mounted therein. The latter is displaceable along the axial direction (A). The check valve unit (1, 100, 200, 300, 400) further includes a valve head (25, 125) with a sealing surface (33, 133), wherein the valve head (25, 125) is disposed on a distal end (21) of the valve shaft (20, 120) in the axial direction (A), the distal end (21) facing away from the mounting portion (11). Further, a damping reservoir (50) is provided inside the shaft bearing body (10, 110, 210, 310, 410). A volume of the damping reservoir (50) is changed by axial movement of the valve shaft (20, 120). In order to obtain a well-defined times for opening and closing under given conditions and to make the check valve unit (1, 100, 200, 300, 400) less prone to making noise, at least two channels (46a, 46b) are provided in parallel, each of them constituting a fluid connection between the damping reservoir (50) and an outside (70). The damping reservoir (50) is, apart from the channels (46a, 46b), at least substantially enclosed. Each channel (46a, 46b) has a length being at least ten times a hydraulic diameter of the respective channel (46a, 46b).
Abstract:
The invention relates to an ejector arrangement (1, 40) comprising a housing (11) and at least two ejectors (2, 3, 41, 42) arranged in said housing (11) along a common axis (13). Each ejector (2, 3, 41, 42) has a motive inlet (4, 5), a suction inlet (6, 7), an outlet (8, 9) and a valve element (23, 24, 43, 44). The task of the invention is to provide an ejector arrangement that allows for a good control of the mass flow of fluid through the ejector arrangement while keeping the construction simple. According to the invention the above task is solved in that the ejector arrangement (1, 40) comprises a common actuator (25, 55), that is arranged to engage at least two of the valve elements (23, 24, 43, 44) to open the motive inlets (4, 5).
Abstract:
A solenoid valve (1) is provided comprising a housing, an inlet, an outlet, main valve means located between said inlet and said outlet, said main valve means comprising a main valve element, pilot valve means adjusting a pressure difference over said main valve element and having a pilot valve element, a coil, a yoke arrangement magnetically linked to said coil, and armature means for moving said pilot valve element. Such a solenoid valve should achieve a large opening stroke without unduly increasing the coil and yoke arrangement. To this end said armature means comprise a first part attractable by said yoke means to perform an opening stroke, and a second part carrying said pilot valve element, wherein said first part is movable relative to said second part in a first section of said opening stroke and is dragging said second part in a second section of said opening stroke following said first section.
Abstract:
The invention relates to a solenoid valve (1) with a housing (2) as well as an inlet (3) and an outlet (6), wherein the solenoid valve further comprises a valve element and an orifice (14), wherein the orifice comprises an orifice inlet (15) and an orifice outlet (16). In order to increase the maximum operating pressure differential of the solenoid valve the orifice is provided in a membrane (12) and the orifice has a diffuser characteristic in a direction from the orifice inlet to the orifice outlet.
Abstract:
A magnetic valve (1) in which a valve housing (2), an armature tube (3), an inlet connection (4) and an outlet connection (5) form a single valve part is provided. An armature (9) made from a soft magnetic material is arranged movably inside the armature tube (3). A coil (16) is arranged externally to the armature tube (3) in such a manner that the armature tube (3) and the armature (9) are arranged inside the windings of the coil (16). A valve closing element (10) is connected to the armature (9) and is movable between a position in which it abuts a valve seat (8) and positions in which it does not abut the valve seat 8, thereby closing and opening the valve (1). In one embodiment, the flow path through the valve (1) from the inlet opening (6) to the outlet opening (7) does not pass through the windings of the coil (16). In another embodiment, the armature tube (3) comprises a closed end part (3a).
Abstract:
Es wird ein elektromagnetischer Aktuator (7) angegeben mit einer Spule (8) und mindestens zwei entlang einer Achse (16) bewegbaren Ankern (12, 17), die durch ein durch die Spule (8) erzeugtes Magnetfeld beaufschlagbar sind. Man möchte mit einfachen Mitteln groβe Steuerungsmoglichkeiten bewirken. Hierzu ist vorgesehen, dass das Magnetfeld auf einen Anker (12) eine groβere Antriebskraft ausübt als auf einen anderen Anker (17).