Abstract: A flowmeter having an inlet through which the medium can flow into a measurement zone and having an outlet through which the medium can flow out, wherein a damping device is provided in front of the inlet, and has a first mass which can be flowed through having a first inlet and a first outlet for the medium, a second mass which can be flowed through having a second inlet and a second outlet for the medium as well as a flow connection which is capable of vibration and which connects the first outlet to the second inlet, wherein a minimal flow cross-section (d) of the flow connection is smaller than the inlet cross-section (E) at the first inlet or smaller than the outlet cross-section (A) at the second outlet.

Abstract: A bearing-free engine includes a bearing and drive stator having a magnetic stator plane and a magnetic rotor having a magnetic rotor plane and supported magnetically in contact free manner within the stator. The axial height of the rotor is smaller than or equal to a half diameter of the rotor. The rotor is stabilized passively by reluctance forces against axial displacement and tilting. A first sensor signal from a first measurement zone of the rotor is evaluated by a first sensor and a second sensor signal from a second measurement zone of the rotor is evaluated by a second sensor. To determine the tilting of the rotor, at least 50% of the first sensor signal from the first measurement zone is generated from a first control measurement zone which is a part of the first measurement zone disposed either below or above the magnetic rotor plane.

Abstract: The invention relates to a rotational machine, designed as a bearing free motor, including a stator (2) designed as a bearing and drive stator having a stator winding (3) and a disc-shaped rotor (4) stored magnetically contact free within the stator (2). In this connection an axial height (H) of the rotor (4) is smaller than or equal to a half diameter (D) of the rotor (4) and with the rotor (4) being passively stabilized by reluctance forces with regard to the stator (2) both against a displacement along a rotational axis (A) of the rotor (4) and also against a tilting from an equilibrium position (G), and with the stator (2) including a permanent magnet (6) for the generation of a homopolar magnetic flux (H?). In accordance with the invention the rotor (4) is a ring-like rotor (4) rotatably arranged about a pole piece (5) of the stator (2) and the rotor (4) includes a ferromagnetic material (FM) and no permanent magnet.

Abstract: An electric rotary drive is proposed, designed as a bearingless external rotor motor, having a magnetically supported, substantially ring-shaped rotor (3) which is arranged around an inwardly disposed stator (2), wherein an air gap (4) is provided between the rotor (3) and the stator (2), wherein the stator (2) is designed as a bearing and drive stator with which the rotation of the rotor (3) can be driven about an axis of rotation (A) and with which the rotor (3) can be magnetically supported, wherein the rotor (3) is radially supported in an actively magnetic manner in the plane perpendicular to the axis of rotation (A) and is supported axially in the direction of the axis of rotation (A) and against tilting in a passively magnetic manner. The stator (2) has, at least in its marginal region (26), a magnetic height (H1) which is smaller than the magnetic rotor height (H2) of the rotor (3) in its radially inwardly disposed region (36).

Abstract: Disclosed is a rotary pump including a magnetic rotor arranged in a pump housing and having a magnetic rotor plane, which rotor is operatively connected to a drive for conveying a fluid. The drive is a bearingless motor having a stator configured as a bearing stator and drive stator and having a magnetic stator plane, wherein the stator bears a drive coil and a bearing coil lying in the stator plane and/or a drive bearing coil. The rotor is magnetically contactlessly journalled within the stator, wherein an axial height (H) of the rotor is smaller than or equal to half a diameter (D) of the rotor so that the rotor is passively magnetically stabilized by reluctance forces with respect to the magnetic stator plane both against axial displacement and against a tilt from an equilibrium position.

Abstract: The invention relates to a magnetic rotor (1) for a rotary pump (2), wherein the rotor (1) can be driven and levitated in a magnetically contactless manner in a pump housing (4) within a stator (5) of the rotary pump (2) for conveying a fluid (3) and the rotor (1) is encapsulated by means of an outer encapsulation (6) including a fluorinated hydrocarbon. In accordance with the invention, the rotor (1) includes a permanent magnet (8) sheathed by a metal jacket (7) within the encapsulation (6), with the metal jacket (7) including at least one metal from the group of elements composed of tantalum, niobium, zirconium, titanium, hafnium, gold, platinum, palladium, osmium, iridium, ruthenium and rhodium. The invention further relates to plant components, in particular to a rotary pump (2) having a magnetic rotor (1).

Abstract: A flowmeter having an inlet through which the medium can flow into a measurement zone and having an outlet through which the medium can flow out, wherein a damping device is provided in front of the inlet, and has a first mass which can be flowed through having a first inlet and a first outlet for the medium, a second mass which can be flowed through having a second inlet and a second outlet for the medium as well as a flow connection which is capable of vibration and which connects the first outlet to the second inlet, wherein a minimal flow cross-section (d) of the flow connection is smaller than the inlet cross-section (E) at the first inlet or smaller than the outlet cross-section (A) at the second outlet.

Abstract: The invention relates to a treatment apparatus (1) for treating a surface (21) of a body (2) with a first treatment medium (31) and a second treatment medium (32). In this respect, the treatment apparatus (1) includes a holding device (5) rotatable about an axis of rotation (4) for receiving and holding the body (2) and a rotary drive (6) rotationally fixedly coupled to the rotatable holding device (5) as well as a supply device (7) for supplying the first treatment medium (31) and the second treatment medium (32) to the surface (21) of the body (2) held in the holding device (5). The treatment apparatus includes a collection container (8) having a separation element (80) which separation element (80) divides the collection container (8) into a first chamber (81) and into a second chamber (82) such that the first treatment medium (31) can be collected in the first chamber (81) and the second treatment medium (32) can be collected separately in the second chamber (82).

Abstract: A magnetic bearing apparatus is proposed having a stator (2) which includes a winding (22) for the generation of a magnetic control field, having a rotor (3) which can be magnetically journalled with respect to the stator (2) and also having a sensor device (5) configured as an eddy current sensor for the determination of the distance between the stator (2) and the rotor (3), wherein the sensor device (5) includes at least one sensor element (51) configured as an inductor and at least one capacitor (53) which forms an electrical resonant circuit with the inductor, and also having a monitoring unit (6) for the control of the sensor device (5) and for the evaluation of the detected signals. The inductor is arranged electrically in series to the capacitor (53) so that the electrical resonant circuit is a serial resonant circuit.

Abstract: The invention relates to a rotational machine adapted as a bearing-free engine including a stator (2) designed as a bearing and drive stator having a magnetic stator plane (21) and a magnetic rotor (3) having a magnetic rotor plane (21) and supported magnetically in contact free manner within the stator (2), wherein an axial height (H) of the rotor (3) is smaller than or equal to a half diameter (D) of the rotor (3) and the rotor (3) is stabilized passively by reluctance forces with respect to the magnetic stator plane (21) both against an axial displacement (?Y) and also against a tilting (??) from an equilibrium position (G).

Abstract: An electric rotary drive is proposed, designed as a bearingless external rotor motor, having a magnetically supported, substantially ring-shaped rotor (3) which is arranged around an inwardly disposed stator (2), wherein an air gap (4) is provided between the rotor (3) and the stator (2), wherein the stator (2) is designed as a bearing and drive stator with which the rotation of the rotor (3) can be driven about an axis of rotation (A) and with which the rotor (3) can be magnetically supported, wherein the rotor (3) is radially supported in an actively magnetic manner in the plane perpendicular to the axis of rotation (A) and is supported axially in the direction of the axis of rotation (A) and against tilting in a passively magnetic manner. The stator (2) has, at least in its marginal region (26), a magnetic height (H1) which is smaller than the magnetic rotor height (H2) of the rotor (3) in its radially inwardly disposed region (36).

Abstract: A centrifugal pump is proposed having a pump housing (2) which has an inlet (21) and an outlet (22), a rotor (3) having a front side (31) facing the inlet (21) and a rear side (32) remote from the inlet (21), and wherein the rotor (3) has a first pump wheel (4) having first vanes (41) for the generation of a main flow from the inlet (21) to the outlet (22), wherein a second pump wheel (5) having second vanes (52) and having at least one relief bore (6) is provided at the rotor (3) for the generation of a recirculation flow which is directed from the rear side (32) of the rotor (3) through the at least one relief bore (6) and wherein a partition element (7), which separates the recirculation flow at least partly from the main flow in the region of the second pump wheel (5), is provided between the two pump wheels (4, 5). A method for the compensation of the axial thrust in a centrifugal pump is furthermore proposed.

Abstract: A mixing apparatus is proposed having a container (2) for the mixing of media which has at least one inlet (31, 32, 33, 34, 35, 36) for the media to be mixed or at least one outlet (4), with a central cut-out (5) being provided which extends in a longitudinal direction (A) into the container and is bounded relative to the inner space (6) of the container (2) by a wall (51), with a permanently magnetic mixing member (7) being provided in the container (2) adjacent to the cut-out (5) for the mixing of the media, and with a drive unit (8) being provided in the cut-out (5) by which the mixing member (7) can be set into rotation via a magnetic coupling. The drive unit (8) is movably arranged in the cut-out (5) such that the position of the mixing member (7) in the container is variable in a controlled manner.

Abstract: A mixing apparatus is proposed having a container (2) for the mixing of media which has at least one inlet (31, 32, 33, 34, 35, 36) for the media to be mixed or at least one outlet (4), with a central cut-out (5) being provided which extends in a longitudinal direction (A) into the container and is bounded relative to the inner space (6) of the container (2) by a wall (51), with a permanently magnetic mixing member (7) being provided in the container (2) adjacent to the cut-out (5) for the mixing of the media, and with a drive unit (8) being provided in the cut-out (5) by which the mixing member (7) can be set into rotation via a magnetic coupling. The drive unit (8) is movably arranged in the cut-out (5) such that the position of the mixing member (7) in the container is variable in a controlled manner.