Abstract: A method of generating control data for a manufacture of a three-dimensional object comprises the following steps: identifying surface data in a computer-based model of said object that correspond to a surface of the object, which is destined to get into contact with the fluid, determining the flow path adjacent a portion of said surface in said computer-based model, modifying said computer-based model such that support structure data are added to the model, said data specifying a support structure designed to be in contact with said portion of said at least one surface during the manufacture of said object, wherein said support structure data are added to the model such that at least one contact region between the support structure and said portion will essentially extend in parallel to the flow path adjacent said portion, preferably deriving control data for the manufacture of the object from the modified model.

Abstract: A high-speed rotating machine includes a case, a balancing unit connected to the case in a state in which a dynamic balance of the balancing unit is already adjusted, and configured to rotate in order to compress or expand air to be supplied to the outside, a gear box connected to the case; and a bull gear connected to the gear box and inserted in the balancing unit in order to be connected to the balancing unit and to transfer a rotational force of the gear box to the balancing unit.

Abstract: A multistage radial turbocompressor has at least first, second, and third intake parts each forming a respective intake spaced along an axis and first, second, and third output parts each forming a respective output axially juxtaposed with the respective intakes. Respective first, second, and third fans having axially directed vanes are rotatable in the housing formed by the parts between the intakes and outputs. A shaft centered on the axis carries the first, second, and third fans. One of the fans is back-to-back with another of the fans with the vanes of the one fan facing axially oppositely away from the vanes of the other of the fans. Radial bearings support the shaft in the housing, and an axial bearing between the one fan and the other fan supports the shaft in the housing.

Abstract: A turbomachine has a housing, a rotor shaft extending along and rotatable about an axis in the housing, and a pair of axially spaced axial-thrust bearings in the housing carrying the shaft and normally only permitting a predetermined small axial displacement of the shaft in the housing. An impeller is rotationally fixed on the shaft. An axially fixed transmission gear is rotationally coupled to the shaft and has an axially directed gear face. A collar fixed axially on the shaft has an axially directed collar face confronting the gear face and normally spaced from the gear face by a clearance equal to more than the predetermined axial displacement. Thus on failure of one of the bearings and axial overtravel of the shaft the gear face and collar face engage each other and limit axial movement of the shaft.

Abstract: A turbomachine has a shaft mounted in a shaft housing, and a rotor in a rotor housing at one end of the shaft, for compression, expansion, or transport of a working gas. The shaft is mounted by hydrostatic, gas-lubricated bearings that have a connector to a compressed gas line that is connected with a pressure region of the turbomachine. A portion of the gas that is passed from the pressure region is applied to the bearing. The shaft is mounted so that the bearing effect is at least extensively independent of the rotational speed of the shaft, thereby guaranteeing support of the shaft during startup of the turbomachine, and good rigidity and low sensitivity to pressure surge stresses. The pressure in the connector to the compressed gas line is at least 5 bar greater than the pressure in the region of the ventilation connector.

Abstract: A turbomachine has a housing and a rotor mounted radially and axially in the housing. The rotor has a shaft and at least one impeller attached to the shaft. Two tilt-segment bearings having tilt segments, which bearings act in opposite directions, are provided for axial mounting of the rotor. The bearings interact with an assigned contact surface of the shaft. At least one of the tilt segments has a force measurement device for direct detection of the axial force acting on the assigned tilt segment. The force measurement devices are connected with an electronic control device.

Abstract: A turbomachine has a housing defining an axis and having an axially outwardly directed first end wall. A shaft rotatable about the axis inside the housing has a first end projecting axially from the housing. An electric rotor is provided on the shaft, and an electric stator is provided on the housing juxtaposed with the electric rotor. A radial impeller fixed on the first shaft end outside the housing has an inner face directed axially toward the housing end wall. A magnetic bearing half is fixed on the housing end wall immediately adjacent and directed at the impeller inner face.

Abstract: A multistage radial turbocompressor has at least first, second, and third intake parts each forming a respective intake spaced along an axis and first, second, and third output parts each forming a respective output axially juxtaposed with the respective intakes. Respective first, second, and third fans having axially directed vanes are rotatable in the housing formed by the parts between the intakes and outputs. A shaft centered on the axis carries the first, second, and third fans. One of the fans is back-to-back with another of the fans with the vanes of the one fan facing axially oppositely away from the vanes of the other of the fans. Radial bearings support the shaft in the housing, and an axial bearing between the one fan and the other fan supports the shaft in the housing.

Abstract: A turbomachine has a housing, a rotor shaft extending along and rotatable about an axis in the housing, and a pair of axially spaced axial-thrust bearings in the housing carrying the shaft and normally only permitting a predetermined small axial displacement of the shaft in the housing. An impeller is rotationally fixed on the shaft. An axially fixed transmission gear is rotationally coupled to the shaft and has an axially directed gear face. A collar fixed axially on the shaft has an axially directed collar face confronting the gear face and normally spaced from the gear face by a clearance equal to more than the predetermined axial displacement. Thus on failure of one of the bearings and axial overtravel of the shaft the gear face and collar face engage each other and limit axial movement of the shaft.

Abstract: A turbomachine has a housing defining an axis and having an axially outwardly directed first end wall. A shaft rotatable about the axis inside the housing has a first end projecting axially from the housing. An electric rotor is provided on the shaft, and an electric stator is provided on the housing juxtaposed with the electric rotor. A radial impeller fixed on the first shaft end outside the housing has an inner face directed axially toward the housing end wall. A magnetic bearing half is fixed on the housing end wall immediately adjacent and directed at the impeller inner face.

Abstract: A turbomachine has a housing and a rotor mounted radially and axially in the housing. The rotor has a shaft and at least one impeller attached to the shaft. Two tilt-segment bearings having tilt segments, which bearings act in opposite directions, are provided for axial mounting of the rotor. The bearings interact with an assigned contact surface of the shaft. At least one of the tilt segments has a force measurement device for direct detection of the axial force acting on the assigned tilt segment. The force measurement devices are connected with an electronic control device.

Abstract: A turbomachine has a shaft mounted in a shaft housing, and a rotor in a rotor housing at one end of the shaft, for compression, expansion, or transport of a working gas. The shaft is mounted by hydrostatic, gas-lubricated bearings that have a connector to a compressed gas line that is connected with a pressure region of the turbomachine. A portion of the gas that is passed from the pressure region is applied to the bearing. The shaft is mounted so that the bearing effect is at least extensively independent of the rotational speed of the shaft, thereby guaranteeing support of the shaft during startup of the turbomachine, and good rigidity and low sensitivity to pressure surge stresses. The pressure in the connector to the compressed gas line is at least 5 bar greater than the pressure in the region of the ventilation connector.

Abstract: A turbomachine for low-temperature applications has a housing, a rotor shaft disposed in the housing, an impeller disposed on one shaft end of the rotor shaft, to which a cold gas is applied, and an electrical machine integrated into the housing. During operation of the turbomachine, a cold zone (K) forms within the housing, in the impeller-side end, and a warm zone (W) forms at the end facing away from the impeller. The housing has at least two compressed gas connectors for a compressed gas, of which one connector is disposed in the cold zone (K), and the other is disposed in the warm zone (W). A control device establishes the flow-through direction for the compressed gas based on temperatures in the cold and warm zones, and controls valve devices on the compressed gas connectors accordingly.

Abstract: A turbomachine for low-temperature applications, has a rotor shaft; at least one rotor disk that is arranged in overhung manner at one shaft end of the rotor shaft; an electric machine having a stator having windings, and an electric rotor arranged on the rotor shaft; a stage housing that surrounds the rotor disk and has connections for a cold gas that flows through the stage housing; and a machine housing in which the electric machine and shaft bearings for the rotor shaft are arranged. The machine housing is connected with the stage housing. A partition made of insulating material is arranged between the stage housing and the machine housing, which thermally separates the stage housing from the machine housing. A line provided with a flow-through regulation fitting is connected to the flow path of the cold gas, for branching off an amount-regulated cooling stream, which is passed to the electric machine within the machine housing.

Abstract: A turbomachine for low-temperature applications has a housing, a rotor shaft disposed in the housing, an impeller disposed on one shaft end of the rotor shaft, to which a cold gas is applied, and an electrical machine integrated into the housing. During operation of the turbomachine, a cold zone (K) forms within the housing, in the impeller-side end, and a warm zone (W) forms at the end facing away from the impeller. The housing has at least two compressed gas connectors for a compressed gas, of which one connector is disposed in the cold zone (K), and the other is disposed in the warm zone (W). A control device establishes the flow-through direction for the compressed gas based on temperatures in the cold and warm zones, and controls valve devices on the compressed gas connectors accordingly.

Abstract: A turbomachine has a turborotor made up of a shaft and a rotor disk, and an electric machine having an electric rotor. The rotor disk is arranged at one end of the shaft, in overhung manner, and the electric rotor is connected with the shaft of the turborotor. The electric rotor is arranged on the other end of the shaft, also in overhung manner, and the shaft is mounted on shaft bearings in a bearing housing that thermally separates the shaft bearings from the electric machine.

Abstract: A turbomachine for low-temperature applications, has a rotor shaft; at least one rotor disk that is arranged in overhung manner at one shaft end of the rotor shaft; an electric machine having a stator having windings, and an electric rotor arranged on the rotor shaft; a stage housing that surrounds the rotor disk and has connections for a cold gas that flows through the stage housing; and a machine housing in which the electric machine and shaft bearings for the rotor shaft are arranged. The machine housing is connected with the stage housing. A partition made of insulating material is arranged between the stage housing and the machine housing, which thermally separates the stage housing from the machine housing. A line provided with a flow-through regulation fitting is connected to the flow path of the cold gas, for branching off an amount-regulated cooling stream, which is passed to the electric machine within the machine housing.

Abstract: An expansion turbine stage for compressed gases has a housing and a turbine rotor. The housing has flow guide channels for feeding the compressed gas to the turbine rotor. The turbine rotor, which is over-mounted and has centripetal flow through it, is followed by an out-flow diffuser enclosed by the housing, to delay the cold expanded gas. The out-flow diffuser is arranged in a holder bore in the housing, as a separate component. For thermal insulation of the housing relative to the cold expanded gas stream, the out-flow diffuser is made of a non-metallic material having a low heat conductivity.

Abstract: A turbomachine has at least one rotor disk that is attached at an overhung end of a mounted first shaft, and an electric rotor of an electric machine that is connected with the end of the first shaft that lies opposite the rotor disk, by way of a coupling. The electric rotor is arranged between the first shaft and a second shaft, mounted so as to rotate, which is oriented in alignment with the first shaft, and is also connected with the electric rotor by way of a coupling. The electric rotor is arranged between the couplings as a coupling intermediate piece, without any mounting of its own, and has coupling elements that work together with coupling elements on the shaft ends, without radial play.

Abstract: A turbomachine has a turborotor made up of a shaft and a rotor disk, and an electric machine having an electric rotor. The rotor disk is arranged at one end of the shaft, in overhung manner, and the electric rotor is connected with the shaft of the turborotor. The electric rotor is arranged on the other end of the shaft, also in overhung manner, and the shaft is mounted on shaft bearings in a bearing housing that thermally separates the shaft bearings from the electric machine.