Abstract: A solenoid valve is proposed, having a substantially circular cross-sectional shape orthogonally in relation to an effective axis of the solenoid valve, it being possible for valve devices of the solenoid valve to be connected to one another by means of joining operations directed substantially in the direction of the effective axis, the valve devices having such peripheral shapes that the valve devices can be centered with respect to one another by means of the joining operations.

Abstract: The invention relates to a valve (100, 101) comprising a housing (110, 111), an annular sealing element (140, 146), and a displaceable closure element (170), wherein the sealing element (140, 146) and the closure element (170) are disposed within the housing (110, 111), and wherein the valve (100, 101) can be closed by placing the closure element (170) against the sealing element (140, 146). The valve (100, 101) is characterized by a hollow space (131, 132) in the region of an outer side of the sealing element (140, 146), in which a part (143, 144) of the sealing element (140, 146) can be received during thermal expansion. The invention further relates to another valve (102) in which the annular sealing element is an O-ring (150).

Abstract: The invention relates to a centrifugal pump (10) for liquids, comprising a pump spiral housing (12) and a pump wheel (28), which is driven by an integrated electromotor (14, 20, 34, 36), whereby the rotational axis thereof (29) is arranged in a coaxial in relation to the rotational axis (37) of the pump wheel (28). The pump spiral housing (12) is sealed by a sealing ring (72) and is connected to the motor housing by means of a bayonet catch (74, 78) and covers the front side thereof. According to the invention, the motor housing (14) is pot-shaped and is made of plastic and the base thereof (13) which is oriented towards the pump spiral housing (12) forms a common housing wall in relation to the pump spiral housing (12).

Abstract: A fluid pump, in particular a water pump, has a pump housing (11) that surrounds a pump wheel and a motor housing, connected to the pump housing, in which an electric motor (21) driving the pump wheel is received along with a stator (22) and rotor. For the sake of sealing off the pump from the escape of fluid and sealing off the motor housing from the penetration of fluid, with only one seal, and with assembly of the fluid pump without additional connecting elements, the pump housing (11) has a lower housing part (12) with an annular rib (14) protruding radially outward, and an upper housing part (13) slipped onto the lower housing part (12). Between the free annular face end of the upper housing part (13) and the annular rib (14), there is a sealing ring (15).

Abstract: A stator according to the prior art is formed out of a laminated stack that is insulated by means of a plastic coating, and stator pole teeth are connected to each other in permeable fashion. A stator (20) according to the invention comprises separate permeable stacks of individual laminations (16) that are held together by means of a plastic coating. The return ring (30) is joined with play on the stack of individual laminations (18, 16, 1) and installed on the stack via bayonet coupling.

Abstract: A fluid pump, in particular a water pump, has a pump housing (11) that surrounds a pump wheel and a motor housing, connected to the pump housing, in which an electric motor (21) driving the pump wheel is received along with a stator (22) and rotor. For the sake of sealing off the pump from the escape of fluid and sealing off the motor housing from the penetration of fluid, with only one seal, and with assembly of the fluid pump without additional connecting elements, the pump housing (11) has a lower housing part (12) with an annular rib (14) protruding radially outward, and an upper housing part (13) slipped onto the lower housing part (12). Between the free annular face end of the upper housing part (13) and the annular rib (14), there is a sealing ring (15).

Abstract: The invention relates to a pump (10), having a pump head (12), which has a pump chamber (11), and having an electric motor (14), which drives the pump head (12) and has a stator (40) and a rotor (38), the rotor (38) being connected to the pump head (12) and being disposed in a rotor chamber (82) open toward the pump chamber (11).

Abstract: In an electronically commutated direct-current motor having a stator (14) with a multi-phase stator winding (15) and a housing (11) receiving the stator (14), having a commutation device (21), disposed in the housing (11) for consistent connection of the winding phases to a direct voltage from the electrical system, which has a plurality of semiconductor switches (22) and an electronic control unit (26), received by a printed circuit board (24), for triggering the semiconductor switches (22), and having a connection plug (13) for delivering the direct voltage from the electrical system, in order to provide a more-robust embodiment of the commutation device (21), all the electronic components of the commutation device (21) that carry power currents, such as the connection plug (13), semiconductor switches (22), electrolyte capacitor (25), and so forth, are contacted on a stamped grid (23), with which the electrical connection with the stator winding (15) and the printed circuit board (24) is established.

Abstract: A rotor according to the prior art has a top part and a bottom part, where the bottom part has stays that are mechanically connected to the top part. However, this has the disadvantage that very strict tolerances must be respected and the type of fastening is not secure. A rotor according to the invention has a ring, which presses stays and thus, by means of positive and frictional engagement, magnets against a tubular element, which in turn is disposed on a bottom part. The bottom part, together with a rotor shaft and a top part, constitutes a rotor.

Abstract: The invention relates to a valve, in particular for the fluid circulation in a motor vehicle, having a housing (12) with at least one inlet (14) and at least one outlet (16, 18) that communicate with one another via a passage (20), and having a valve member (22), which is embodied as a movable flap (24) that monitors the passage (22), wherein the passage (20) has a chamber (26) in which the flap (24) is disposed and into which the at least one inlet (14) and the at least one outlet (16, 18) discharge, wherein the flap (24) is pivotably supported in the housing (12) and can be shifted via a drive mechanism (36, 70) from a first terminal position (38) to a second terminal position (40), and wherein the terminal positions (38, 40) form an angle (&agr;) that is smaller than 90°.

Abstract: A stator (1) and sleeve (5) are secured to one another by means of nonpositive engagement in the form of a bayonet mount (30). The apparatus is employed in particular in electric motors.

Abstract: A stator in the prior art is secured in a sleeve by a shrink fit.

Abstract: A stator according to the prior art is formed out of a laminated stack that is insulated by means of a plastic coating, and stator pole teeth are connected to each other in permeable fashion.

Abstract: A rotor according to the prior art has a top part and a bottom part, where the bottom part has stays that are mechanically connected to the top part. However, this has the disadvantage that very strict tolerances must be respected and the type of fastening is not secure. A rotor (1) according to the invention has a ring (42), which presses stays (45) and thus, by means of positive and frictional engagement, magnets (40) against a tubular element (38), which in turn is disposed on a bottom part. The bottom part (4), together with a rotor shaft (7) and a top part (64), constitutes a rotor (1).

Abstract: An electronically commutatable motor is described, the stator field windings of which can be connected to a commutation frequency having a DC supply voltage to generate a rotating field for the permanent magnet rotor and can be disconnected from it, the field windings being switchable via semiconductor output stages which can be activated via control signals with the commutation frequency of a control unit and whose operating conditions change as a function of a specified or specifiable setpoint. The disadvantages of motors with pulse-width-modulated control of the field windings can be avoided with simplified motor control in that the DC supply voltage is supplied to a DC transformer whose output voltage for the semiconductor output stages with the field windings changes as a function of the setpoint and that the control unit fully activates the semiconductor output stages continuously with unclocked control signals with the commutation frequency independently of the setpoint.

Abstract: A magnetic valve for a fluid-controlled heating and/or cooling installations has a valve housing, an electromagnetically switched valve member which in a first fixing position makes a connection between an inlet conduit and an outlet conduit and in a second switching position blocks the connection, a valve shaft provided with an armature and connected movably to the valve member, the valve shaft having a side which faces the valve member and is provided with a unit for slowing down a speed of the valve shaft upon closure of the valve member, the valve housing and the valve member being arranged so that a flow direction of a fluid around the valve member is opposite to a closing direction of the valve member.

Abstract: The invention is based on a magnet valve (10) for a fuel-regulated heating and/or cooling system, having a valve housing (16) that has an inlet conduit (18), an outlet conduit (20, 22), a return conduit (98), and a bypass conduit (24, 26) between the inlet conduit (18) and the return conduit (98), and having an electromagnetically switched valve member (32, 34) and bypass valve member (36, 38), which are secured together with an armature (86, 88) to a lifting rod (52, 54), and the valve member (32, 34) establishes the communication between the inlet conduit (18) and the outlet conduit (20, 22) and blocks it in a switching position in which it is supplied with current, while the bypass valve member (36, 38) controls the communication between the bypass conduit (24, 26) and the return conduit (98) as a function of the feed flow in the currentless switching position and establishes it in the switching position in which it is supplied with current.

Abstract: An electrical connection arrangement between a contact element (13) and connection wire (12)is designed in such a way that reliable contact-making is possible in a simple manner and with the capability of automation. For this purpose, the connecting arrangement has a receptacle (11), in which the connecting wire (12) is held in the form of a winding having a plurality of turns. The contact element (13) provided with cutting edges (32) can be plugged into the receptacle (11). The outer delimitations of the turns of the connecting wire (12) and the cutting edges (32) are inclined with respect to one another in their longitudinal extent, with the result that, in the case of a plug-in movement of the contact element (13) into the receptacle (11), said contact element enters into a cutting connection on a plurality of turns of the connecting wire (12). This connection arrangement is used, inter alia, when contact is made between the connecting wires (12) of coils.

Abstract: In a constant timing valve for the discontinuous metering of a volume flow, in particular the flow of cooling water flowing through a heat exchanger of a motor vehicle heater, the volume flow flowing through the valve outlet (17) is maintained constant regardless of the magnitude of the volume flow available at the inlet (16) in the valve housing (15) in that a bypass channel (28) is formed which leads from the inlet (16) to a return (18) and is closed by a spring-loaded, pressure-contro led bypass valve (29). The bypass valve (29) is designed in such a way that the excess volume flow flows off via the return (18) when the connection between the inlet (16) and outlet (17) is not blocked, at least after reaching a given minimum pressure in the bypass channel (28). The integrated bypass valve (29) is coupled with the timing valve (14) in such a way it is compulsorily pushed opened by the timing valve (14) when the timing valve (14) is closed (FIG. 1).