Abstract: In a furniture piece including a furniture support part and an adjustable furniture part which is movable relative to the furniture support part by an electric drive motor, the electric drive motor is operable by a power supply at the power supply net voltage without galvanic separation between the power supply and the electric drive motor. The furniture pieces also include sensors for sensing motions of the furniture parts which motions are analyzed and compared with reference patterns to determine an occupation state of the furniture pieces.

Abstract: The invention relates to an electrically adjustable piece of furniture comprising an electric drive motor for adjusting as least one furniture adjusting section with respect to a furniture support section, wherein the piece of furniture comprises sensor devices for detecting the inclination or the change of inclination of the furniture adjusting section.

Abstract: A pump device for delivering fluid to be pumped includes at least one drive unit with a drive and at least one receiving region on which at least two pump cartridges can be positioned so as to be hydraulically connected in series.

Abstract: The invention relates to an electrically adjustable piece of furniture comprising an electric drive motor for adjusting as least one furniture adjusting section with respect to a furniture support section, wherein the piece of furniture comprises sensor devices for detecting the inclination or the change of inclination of the furniture adjusting section.

Abstract: A stator-rotor device for an electrical machine, in particular an electric motor, includes a stator and a rotor, wherein the stator-rotor device pole cores provided with windings comprise pole shoes and magnets associated therewith. The pole shoes are connected via a first surface to a respective pole core and have a second surface that is facing towards the magnets. The pole shoes cooperate magnetically with the magnets and are separated from the latter by an air gap. The pole shoes and the magnets engage with one another in an engagement direction in such a way that in each case a section of the other component—magnet or pole shoes—is arranged lying opposite the respectively engaging component—pole shoe or magnet—transverse to the engagement direction on two sides facing away from one another. The second surface is larger than the first surface.

Abstract: A stator-rotor device for an electrical machine, in particular an electric motor, includes a stator and a rotor, wherein the stator-rotor device pole cores provided with windings comprise pole shoes and magnets associated therewith. The pole shoes are connected via a first surface to a respective pole core and have a second surface that is facing towards the magnets. The pole shoes cooperate magnetically with the magnets and are separated from the latter by an air gap. The pole shoes and the magnets engage with one another in an engagement direction in such a way that in each case a section of the other component—magnet or pole shoes—is arranged lying opposite the respectively engaging component—pole shoe or magnet—transverse to the engagement direction on two sides facing away from one another. The second surface is larger than the first surface.

Abstract: The invention relates to an engine control for a synchronous motor having a number of N stator coils set off in regard to each other, which are arranged around a rotor of the synchronous motor, wherein there may be impressed upon the stator coils by the engine control a coil voltage and wherein there is formed a coil current having a direct current component in a co-ordinate system rotating proportionally with the number of revolutions performed by the synchronous motor as well as a cross current component, wherein the cross current component effects a tangential force activating the rotor in the direction of rotation and wherein the direct current component effects a force acting perpendicularly to the rotor surface on the rotor, wherein the engine control has a direct current generator for generating a direct current component periodically alternating in the rotating co-ordinate system, in order to neutralize oscillations of the synchronous motor activated by the engine control by means of the force generat

Abstract: A method for operating a pump unit including a pump and a drive motor for the latter, the pump unit being disposed in a fluid circuit that is to be filled with a liquid to be moved and in which the liquid to be moved is moved using the pump unit. In order to provide a method in which the pump unit can be operated in a more energy-efficient manner, it is proposed that the fill status of the fluid circuit be determined and, with the use of a control unit, the working point of the pump unit be modified in operation thereof depending on the fill status of the fluid circuit. Also described is a pump unit for carrying out the method and to the use of a pump unit.

Abstract: A circulating pump includes a conveying element for conveying a conveyed liquid, and an electric motor which has a stator, a rotor, and a gap therebetween, wherein the rotor includes a shaft rotatable about a rotation axis and to which the conveying element is rotationally fixed, and the shaft is mounted to a radial slide bearing having a lubrication region configured to be liquid-lubricated with the conveyed liquid. The circulating pump includes a sealing device which inhibits fluid communication between the lubrication region and the gap located between the stator and the rotor.

Abstract: A water delivery system is provided, including at least one sink with a faucet device having a cold water faucet part and a hot water faucet part, a cold water line to the at least one sink, a hot water line to the at least one sink, and a valve associated with the at least one sink allowing in an open state the transport of water between the hot water line and the cold water line and inhibiting in a closed state the transport of water between the hot water line and the cold water line, wherein the open state and the closed state of the valve depend solely on whether a differential pressure across the valve is below or above a threshold value.

Abstract: The invention relates to an engine control for a synchronous motor having a number of N stator coils set off in regard to each other, which are arranged around a rotor of the synchronous motor, wherein there may be impressed upon the stator coils by the engine control a coil voltage and wherein there is formed a coil current having a direct current component in a co-ordinate system rotating proportionally with the number of revolutions performed by the synchronous motor as well as a cross current component, wherein the cross current component effects a tangential force activating the rotor in the direction of rotation and wherein the direct current component effects a force acting perpendicularly to the rotor surface on the rotor, wherein the engine control has a direct current generator for generating a direct current component periodically alternating in the rotating co-ordinate system, in order to neutralise oscillations of the synchronous motor activated by the engine control by means of the force generat

Abstract: A pump unit including a pump and an inverter drive, the inverter drive including a motor for driving the pump, a control unit for controlling the motor and a storage unit operatively connected to the control unit. The storage unit has stored therein a control program which determines the range of functions and/or the mode of functioning of the pump unit. The motor is controllable by the control unit depending on the control program. The pump unit includes a communication unit which is configured for establishing a contactless communication link with an external configuration device and that configuration data is transmittable, via the communication link, from the configuration device to the pump unit. The control program stored in the storage unit is modifiable for changing the range of functions and/or the mode of functioning of the pump unit depending on the configuration data transmitted.

Abstract: A circulation pump for a conveyed liquid is provided. The circulation pump has an electric motor, which is electronically commutated, has a rotor, a stator and a motor circuit. An impeller is connected in a rotationally fixed manner to the rotor. The electric motor has an evaluation device for determining a flow rate of conveyed liquid through the circulation pump from a rotational speed of the rotor and/or a power consumption of the electric motor. At least one signal output is provided, by which a flow rate signal and/or flow rate-dependent switching signal can be supplied by the circulation pump.

Abstract: In order to provide a circulating pump, comprising a stator, a rotor, a bearing device with a convex bearing member and at least one concave bearing shell, via which the rotor is mounted for rotation, and an impeller which is connected non-rotatably to the rotor, which has improved lubrication possibilities and/or with which any axial lifting of the impeller can be prevented in an effective manner, it is provided for a shaft element to be connected non-rotatably to the rotor and non-rotatably to the impeller and for the shaft element to be guided through the bearing member and to be rotatable relative to the bearing member.

Abstract: To provide a circulating pump, comprising a housing, in which a pumping space is arranged, a suction connector, which is in fluid connection with the pumping space, and a pressure connector, which is in fluid connection with the pumping space, which can be produced in a simple manner and can be used in a reliable manner, wherein the suction connector and/or pressure connector are formed on at least one connector element, which is a separate part from the housing, and wherein the connector element is fixed to the housing, it is proposed that the housing have a fixing region for fixing the at least one connector element, which is arranged above the pumping space.

Abstract: A water delivery system is provided, comprising at least one sink with a faucet device comprising a cold water faucet part and a hot water faucet part, a cold water line to the at least one sink, a hot water line to the at least one sink, and a valve associated with the at least one sink allowing in an open state the transport of water between the hot water line and the cold water line and inhibiting in a closed state the transport of water between the hot water line and the cold water line, wherein the open state and the closed state of the valve depend solely on whether a differential pressure across the valve is below or above a threshold value.

Abstract: In order to provide a circulating pump, comprising a stator, a rotor, a bearing device with a convex bearing member and at least one concave bearing shell, via which the rotor is mounted for rotation, and an impeller which is connected non-rotatably to the rotor, which has improved lubrication possibilities and/or with which any axial lifting of the impeller can be prevented in an effective manner, it is provided for a shaft element to be connected non-rotatably to the rotor and non-rotatably to the impeller and for the shaft element to be guided through the bearing member and to be rotatable relative to the bearing member.

Abstract: A circulation pump is provided. The circulation pump has an electric motor with a stator, a rotor and a motor circuit. The electric motor is disposed in a housing which has a first chamber, in which the stator and the rotor are disposed, and a second chamber, which is separate from the first chamber and in which at least one carrier is positioned, on which at least part of the motor circuit is disposed. The first chamber and the second chamber are connected by at least one connection opening, by means of which at least one electrical element of the motor circuit, which is disposed on the at least one carrier, is in thermal contact with the stator in the first chamber. By providing a housing with separate chambers, the stator in the first chamber may be liquid cooled and the second chamber containing the carrier may be air-cooled.

Abstract: A coil module for a stator of an electric motor comprising a coil holder, a coil that is disposed on the coil holder, a first web and a second web is provided, wherein situated between the first web and the second web are a first coil portion and a second coil portion for contacting with a motor circuit.

Abstract: In order to make a power supply unit available for an electrical appliance, in particular, for a computer, it is suggested that said electrical appliance has a fan device, wherein a radiator for a liquid cooling device is integrated into the power supply unit.