Patent application number | Description | Published |
20090267425 | MACHINE HAVING AN UNCOOLED ROTOR BODY AND A COOLED ROTOR WINDING, AS WELL AS AN ASSOCIATED HOLDING AND/OR SUPPORTING DEVICE - The invention relates to a machine with an uncooled rotor, which is mounted such that it is capable of rotating about an axis of rotation and which has cutouts or flattened portions on its outside. At least one rotor winding, which is accommodated in a cryostat with a cryostat wall and is to be cooled to low temperature, should be arranged in the cross-sectional area region of these flattened portions. A holding and/or support device is used for transmitting forces acting on the rotor winding beyond the cryostat wall to the rotor body. In order to reduce losses in the cooling system which occur as a result of thermal conduction, the holding and/or support device should contain at least one support element, which is equipped with means for reducing the thermal conductivity. | 10-29-2009 |
20090293504 | REFRIGERATION INSTALLATION HAVING A WARM AND A COLD CONNECTION ELEMENT AND HAVING A HEAT PIPE WHICH IS CONNECTED TO THE CONNECTION ELEMENTS - The invention relates to a refrigerating arrangement ( | 12-03-2009 |
20100038980 | COOLING SYSTEM OF A SUPERCONDUCTING MACHINE - A superconducting machine device is disclosed including a machine; a rotor including a superconductive coil; and a cooling system including at least one incline-intolerant component for cooling the coil. In at least one embodiment, at least one component is held by a carrier compensating for an incline of the machine device. | 02-18-2010 |
20100176667 | ELECTRICAL MACHINE HAVING A SUPERCONDUCTING ROTOR WINDING - The invention relates to an electric machine ( | 07-15-2010 |
20110127874 | ROTOR HAVING A SUPERCONDUCTING ROTOR WINDING AND AN INTEGRAL SLEEVE SURROUNDING THE ROTOR WINDING - A rotor for an electrical machine, in particular a synchronous machine has a rotor axis which defines a rotor shaft. The rotor has a winding support which is arranged on the rotor shaft such that they rotate together, in such a way that it surrounds the rotor shaft in a centre section with respect to the rotor axis. The winding support is fitted with a superconducting rotor winding. The rotor has a sleeve which at least radially surrounds the winding support and the rotor winding with respect to the rotor axis. At least in the area, in which it radially surrounds the winding support and the superconducting rotor winding, the sleeve is formed integrally from a metal alloy, which is non-magnetic, has an electrical conductivity of at least 60% of the electrical conductivity of copper at 20° C., has a mechanical tensile strength of at least 250 N/mm | 06-02-2011 |
20120073787 | COOLING FOR SUPERCONDUCTING MACHINES - A device for cooling superconducting machines has a closed thermal siphon system which can be filled with a liquid coolant and has an evaporator for evaporating the liquid coolant. In order to improve the cooling performance of the device, the surface area of the evaporator which can be wetted with the liquid coolant is increased. | 03-29-2012 |
20120102723 | ELECTRIC MACHINE AND METHOD FOR DETERMINING THE AXIAL POSITION OF BEARINGS FOR A ROTOR OF THE MACHINE - An electric machine contains a rotor which contains a first longitudinal section at the ambient air temperature and a second longitudinal section cooled at least partially to cryogenic temperature, a coolant inlet pipe extending into the second longitudinal section, wherein the inlet pipe is set at a distance from the rotor by a radial gap, wherein the inlet pipe in the first longitudinal section is mounted by at least two bearings, wherein the bearings are distributed on axial positions in such a way that upon action of a maximum radial force on the inlet pipe the pipe has a maximum deflection which is smaller than the radial gap. In a method for determining the axial positions, various batches of potential locations are chosen for the axial positions of the bearings, according to potential locations which has a minimum gap greater than zero. | 05-03-2012 |
20120159975 | METHOD FOR OPERATING A COOLING DEVICE FOR COOLING A SUPERCONDUCTOR AND COOLING DEVICE SUITABLE THEREFOR - A cooling device is disclosed for cooling a superconductor, wherein the cooling device includes a linear compressor for compressing a working medium and a cooling unit for providing a cooling power to a cryogenic coolant of the superconductor by expanding the working medium. The linear compressor includes two pistons of which at least one, preferably both synchronously relative to each other, are displaceable at a frequency and a stroke linear to the other piston, wherein a defined cooling power can be generated at a good efficiency so that the cooling device is suitable for use particularly in mobile installations, such as ships. To this end, according to at least one embodiment of the invention, the stroke of the at least one displaceable piston is controlled at a preferably prescribed target value. | 06-28-2012 |
20130161968 | DEVICE FOR TRANSMITTING A FORCE, IN PARTICULAR A CARRYING HANDLE - A device for transmitting a force, in particular for carrying a load, including two curved arch segments which lie opposite each other and which are connected to each other by two straight limbs that are equally long is provided. The curved arch segments and the straight limbs are produced continuously from one material at the transition points of the arch segments and limbs. A force application and exertion occurs via two bolt-like structural elements which have an outer contour that is adapted to the corresponding curved arch segments and which are to be arranged within the two arch segments in order to transmit the force. The transition of the curvature at the transition points from the limbs to the arch segments and along the respective arch segments is constant. | 06-27-2013 |
20130165325 | APPARATUS AND METHOD FOR COOLING A SUPER CONDUCTING MACHINE - An apparatus and a method for cooling a super conducting machine are disclosed, in which at least two condenser areas each make thermal contact with a cold head, and in which the at least two condenser areas each have a connecting line, via which the at least two condenser areas are connected fluidically to an evaporator area. A liquid cooling fluid can be moved or pumped from at least one condenser area into the evaporator area by way of a temperature difference, and a pressure difference associated therewith, in the at least two condenser areas. | 06-27-2013 |
20130181552 | SUPERCONDUCTING ELECTRICAL MACHINE HAVING A CONNECTION DEVICE FOR AXIAL EXPANSION COMPENSATION OF A WINDING FORMER - A superconducting electrical machine includes a rotor with a rotor outer housing surrounding a winding support having a superconducting winding. The rotor has on a torque-transmitting side a first, rigid connection device between the winding support and the rotor outer housing and on the opposite side a second connection device which compensates for axial expansion of the winding support. The second connection device has an axially extending connection element which is on one end connected rigidly to the winding support and which has on the opposite free end an axially moving, radially force-fitting connection to a centering holding element of the rotor outer housing. The holding element includes a bushing through the rotor outer housing, through which the free end of the connection element of the second connection device passes. The superconducting winding is cooled and thermally insulated. | 07-18-2013 |
20130187491 | ROTOR FOR AN ELECTRIC MACHINE - A rotor form electric machine is provided including a rotor body that rotates about an axis of rotation, the rotor body having a superconducting rotor winding and cooling arrangement provided for cooling the rotor winding having at least one pair of cooling tube loops disposed substantially radially opposite each other on the rotor body, wherein a cryogenic coolant is transported in the axial direction in the coolant tube loops from a first axial rotor end to a second, opposite axial rotor end and back when the rotor rotates about the axis of rotation. One or more connecting tubes are provided in the cooling arrangement and connect one cooling tube loop to the other cooling tube loop of the at least one pair of cooling tube loops. | 07-25-2013 |
20130190184 | DEVICE AND METHOD FOR DAMPED, NON-CONTACT SUPPORT OF A COOLANT FEED LINE FOR SUPERCONDUCTING MACHINES - A superconducting machine for supporting a coolant feed line for superconducting machines includes a hollow shaft that can be connected to the superconducting machine in a first region, the coolant feed line being disposed in the interior thereof for feeding the coolant from the refrigeration unit to the superconducting machine. A magnetic support is disposed in the first region of the hollow shaft so that a radial and thus motion-damping, centering force is exerted on the coolant feed line. The magnetic support has a first and a second magnetic cylinder, wherein the first magnetic cylinder is disposed on the outer jacket of the coolant feed line and the second magnetic cylinder is disposed on the inner face of the hollow shaft. The first magnetic cylinder is a cylinder made of highly electrically conductive material having ohmic resistance. | 07-25-2013 |
20130331269 | Coil System for a Magnetic Resonance Tomography System - A coil system for a magnetic resonance tomography system includes a plurality of coils for sending and/or receiving high-frequency signals. The plurality of coils is disposed in a receiving chamber between a tomography magnet and a lining of an opening in the tomography magnet and may be cooled by a cooling apparatus. When the coil system is in an operating state, the receiving chamber is filled with a cryogenic cooling medium. | 12-12-2013 |
20130334913 | SUPER CONDUCTING SYNCHRONOUS MACHINE COMPRISING A ROTOR WHICH CAN ROTATE IN RELATION TO A STATOR AND WHICH HAS AT LEAST ONE SUPER CONDUCTING WINDING - A super conducting synchronous machine including a rotor which may rotate in relation to a stator and which has at least one super-conducting winding which is cooled my means of a cooling machine is provided. The cooled areas of the rotor are surrounded at least partially by a vacuum chamber rotating with the rotor. A pump line connecting the vacuum chamber to a vacuum pump is provided in a connection area produced by means of at least two rotational seals, fixed in relation to a rotor and defining the vacuum chamber. | 12-19-2013 |
20140247022 | SUPERCONDUCTING MACHINE AND METHOD FOR THE OPERATION THEREOF - A superconducting machine is disclosed, in particular for use as a generator in a stand-alone power system. In at least one embodiment, the superconducting machine includes a stator and a rotor capable of rotating with respect to the stator. At least one superconducting coil for generating at least two magnetic poles is provided on at least one component part, in particular the rotor, which superconducting coil is cooled via a cooling device; and at least two parallel winding elements are provided on the respective other component part, in particular the stator, in the armature winding for each phase, which winding elements can be connected either in series or in parallel via at least one switching device. | 09-04-2014 |