Abstract:
The invention relates to an electropneumatic pressure transducer comprising a solenoid valve that contains a solenoid coil (37) and a magnetic core (35). The latter are provided in a housing (31), together with a regulator sub-assembly (60). The electropneumatic pressure transducer (30) is used to regulate variable negative pressures Pvar of consumers (16, 19, 21, 24). The regulator sub-assembly (60) comprises components (61, 64, 66) that are joined by means of their material, thus forming sealed regions (70, 72).
Abstract:
The invention relates to a rotor for an electric asynchronous machine having a squirrel cage and to a method for manufacturing such a rotor. The rotor (1) has a rotor body (3) comprising a plurality of recesses (5), a plurality of metal rods (7) disposed in said recesses (5), and a plurality of cage rings (9) disposed on end faces of the rotor body (3). A plurality of cage rings (9', 9", 9"') are stacked axially one behind the other on each of the end faces of the rotor body (3), each of the cage rings (9', 9", 9"') merely being electrically connected to a sub-group of the metal rods (7) and the cage rings (9', 9", 9"') disposed on an end face are electrically insulated from one another. To this end all cage rings (9', 9", 9"') can preferably be designed having an identical geometry and the metal rods (7) can all be disposed at the same distance from an axis of rotation of the rotor (1). The metal rods (7) and the cage rings (9) can be designed as separate components and then, after assembly of the squirrel cage, can be connected to one another cohesively, for example by welding, in particular laser welding, or soldering, in particular dip soldering.
Abstract:
In torque motors known from the art a non-constant air gap is produced between the rotor and the stator that consist of sheet stacks by complex constructions on the stator. The torque motor (30) according to the invention has an unsymmetrical rotor (20) that produces a non-constant air gap between the rotor (20) and the stator (1).
Abstract:
The invention relates to a cage rotor (1) for an electrical asynchronous machine, which comprises a disk pack (7) of a plurality of laminate plates (5) stacked side by side in the axial direction as well as a short-circuiting cage (9). The short-circuiting bars (11) of the short-circuiting cage (9) extend in the axial direction through the disk pack (7) and are in each case connected to end faces of the disk pack (7) by a short-circuiting ring (13). The cage rotor is characterized in that tie rods (16) are arranged on the disk pack, which have a higher mechanical strength than the short-circuiting bars (11) and project from the end faces of the disk pack (7) in the axial direction and protrude at least partially into at least one of the short-circuiting rings (13). The tie rods (16) can be, for example, stabilizing bars (17) which extend in the axial direction through the disk pack (7). In this way, the tie rods (16) can stabilize the short-circuiting rings (13), which are typically made of mechanically soft material, against, for example, centrifugal forces occurring at high rotational speeds. If the tie rods (16) are configured as stabilizing bars (17) in the form of hollow pipes, they can additionally serve as cooling channels. Projecting end regions (21) can be suitably bent or shaped to form blades in order to circulate cooling fluid or to convey it through the hollow stabilizing bars (17).
Abstract:
The invention relates to a short-circuit ring (1) for a rotor (3) of an electrical asynchronous machine. Said short-circuit ring (1) is circular and has across its periphery a plurality of axially extending recesses (13) into which the rods (7) of a rotor cage of the asynchronous machine can be introduced. The short-circuit ring is composed of a plurality of partial ring segments (11).
Abstract:
The invention relates to a bypass valve for internal combustion engines, which is used for connecting the pressure side to the suction side of a charging device (24). Said bypass valve (34) comprises an electromagnetic actuator (36) and a valve housing (40) in which a closing component (41) is movably accommodated. The closing component (41) is provided with a pressure-impinged valve member (42) that can be moved in a duct (32.1, 32.2) as well as a switchable sealing element (44).