Patent application number | Description | Published |
20100183450 | STROKE-REGULATED LINEAR COMPRESSOR - A linear compressor having an electromagnet; an oscillating body movably guided in an oscillating fashion in the alternating field of the electromagnet; a cylinder; a piston connected to the oscillating body and movable back and forth inside the cylinder; a power supply circuit to supply the electromagnet with an alternating current; a proximity sensor to detect whether a distance between the piston and the end face of the cylinder falls below a predetermined threshold value; and a control circuit to detect a time period in which the distance between the piston and the end face of the cylinder falls below the threshold value and to regulate an amplitude and/or a phase of the alternating current if the time period deviates from a positive setpoint value. | 07-22-2010 |
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 |
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 |
20130037472 | DEVICE FOR SEPARATING FERROMAGNETIC PARTICLES FROM A SUSPENSION - A device for separating ferromagnetic particles from a suspension may include a tubular reactor through which the suspension can flow and which has an inlet and an outlet, and a means for generating a magnetic field, which means is designed to generate a magnetic travelling field which acts on the reactor. | 02-14-2013 |
20140100115 | ROTOR FOR AN ELECTRIC MACHINE AND ELECTRIC MACHINE - A rotor for an electric machine includes a pole core having a coolable magnetisable rotor section which is made of a super-conducting material. The rotor section has a rotationally symmetric geometry. The pole core is formed as a cylinder and the rotor section is arranged on an outer surface of the cylinder so as to be encircling. | 04-10-2014 |
20140171330 | ELECTRIC MACHINE - The invention relates to an electric machine ( | 06-19-2014 |
20140221214 | DEVICE AND METHOD FOR COOLING A UNIT - The present invention relates to a method and a device ( | 08-07-2014 |