Pump arrangement

Abstract

A pump arrangement having a unit which comprises a material with a magnetocaloric action, an arrangement of conduits which are in the region of the unit and through which a liquid or gaseous heat-conduction medium flows and a pump system operating according to travelling-wave principles.

1 . A pump arrangement comprising a device with a material having a magnetocaloric effect, a conduit arranged in the area of the device through which a liquid or gaseous heat transfer medium flows, and a pump system operating on the traveling wave principle. 
     
     
         2 . A pump arrangement according to  claim 1 , wherein the pump system is provided spatially integrated into the working unit. 
     
     
         3 . A pump arrangement according to  claim 1 , wherein characterized in that the working unit has a rotating working electrical motor having a rotor and a stator and wherein the pump system is at least partially integrated in a space formed between the rotor and the stator of the electrical motor. 
     
     
         4 . A pump arrangement according to  claim 1 , wherein means are provided for periodically providing a magnetic field. 
     
     
         5 . A method for conveying a heat conducting medium through an arrangement with a material having the magnetocaloric effect, comprising rotationally operating, at a rotational frequency in the range of 0.2 Hz to 20 Hz, a pump system operating on the traveling wave principle and conveying the heat conducting medium. 
     
     
         6 . The method according to  claim 5 , wherein the material which has the magnetocaloric effect is periodically subjected to a magnetic field. 
     
     
         7 . (canceled) 
     
     
         8 . A method for conveying a heat conducting medium through an arrangement with a material having the magnetocaloric effect, comprising rotationally operating, at a rotational frequency in the range of 1 Hz to 10 Hz, a pump system operating on the traveling wave principle and conveying the heat conducting medium.