Rotor

Abstract

Rotor, in particular a rotary heat pump, including a rotational axis, a number of compression ducts in which a working medium, in particular a gas, preferably a noble gas, is guided away from the rotational axis to increase the pressure due to the centrifugal acceleration, a number of expansion ducts in which the working medium is guided towards the rotational axis to reduce the pressure due to the centrifugal acceleration, a number of first heat transfer ducts for the working medium and a number of second heat transfer ducts for a heat transfer medium, in particular a liquid, so that heat is transferred between the working medium flowing in the first heat transfer ducts and the heat transfer medium flowing in the second heat transfer ducts, a number of first (10) and second rotor plates including the compression ducts, the expansion ducts, the first heat transfer ducts for the working medium and the second heat transfer ducts for the heat transfer medium, wherein the first and second rotor plates are connected to each other along their main planes of extension.

What is claimed is: 
     
         1 . Rotor ( 1 ), comprising a rotary heat pump, comprising:
 a rotational axis ( 2 ),   a number of compression ducts ( 15 ) in which a working medium, comprising a gas, is guided away from the rotational axis ( 2 ) to increase the pressure due to the centrifugal acceleration,   a number of expansion ducts ( 20 ) in which the working medium is guided towards the rotational axis ( 2 ) to reduce the pressure due to centrifugal acceleration,   a number of first heat transfer ducts ( 18 ) for the working medium and   a number of second heat transfer ducts ( 22 ) for a heat transfer medium, comprising a liquid, so that heat is transferred between the working medium flowing in the first heat transfer ducts ( 18 ) and the heat transfer medium flowing in the second heat transfer ducts ( 22 ),   wherein   a number of first ( 10 ) and second rotor plates ( 11 ) comprising the compression ducts ( 15 ), the expansion ducts ( 20 ), the first heat transfer ducts ( 18 ) for the working medium and the second heat transfer ducts ( 22 ) for the heat transfer medium,   wherein the first ( 10 ) and second rotor plates ( 11 ) are connected to each other along their main planes of extension.   
     
     
         2 . The rotor ( 1 ) according to  claim 1 , wherein wherein
 the number of first rotor plates ( 10 ) each comprise at least one of the compression ducts ( 15 ), at least one of the expansion ducts ( 20 ) and at least one of the first heat transfer ducts ( 18 ) for the working medium and   the number of second rotor plates ( 11 ) each comprise at least one of the second heat transfer ducts ( 22 ) for the heat transfer medium.   
     
     
         3 . The rotor ( 1 ) according to  claim 2 , wherein
 the first rotor plates ( 10 ) each comprise at least one flow duct ( 12 )   with an essentially radially outward running flow duct section ( 16 ) to form one of the compression ducts ( 15 ) and/or   with an essentially radially inward running flow duct section ( 19 ) to form one of the expansion ducts ( 20 ) and/or   with an essentially circumferentially running flow duct section ( 17 ,  21 ) to form one of the first heat transfer ducts ( 18 ),   wherein the at least one flow duct ( 12 ) comprises an inlet opening ( 13 ) for the working medium at a first end and an outlet opening ( 14 ) for the working medium at a second end.   
     
     
         4 . The rotor ( 1 ) according to  claim 1 , wherein a fan ( 7 ) is provided for maintaining the flow of the working medium, the inlet openings ( 13 ) being connected to an outlet of the fan ( 7 ) and/or the outlet openings ( 14 ) being connected to an inlet of the fan ( 7 ). 
     
     
         5 . The rotor ( 1 ) according to  claim 2 , wherein the first rotor plates ( 10 ) each comprise a plurality of flow ducts ( 12 ), each with at least one flow duct section ( 16 ) running essentially radially outwards and/or with at least one flow duct section ( 19 ) running essentially radially inwards and/or with at least one flow duct section ( 17 ,  21 ) running essentially in the circumferential direction. 
     
     
         6 . The rotor ( 1 ) according to  claim 5 , wherein the flow ducts ( 12 ) of the first rotor plates ( 10 ) each comprise a plurality of flow duct sections ( 17 ,  21 ), running essentially in the circumferential direction, at different radial distances from the rotational axis ( 2 ) in order to form a plurality of first heat transfer ducts ( 10 ). 
     
     
         7 . The rotor ( 1 ) according to  claim 5 , wherein two adjacent flow ducts ( 12 ) of the first rotor plates ( 10 ) are arranged mirrored with respect to a plane of symmetry spanned in the axial and radial directions, the two adjacent flow ducts ( 12 ) sharing a common inlet opening ( 13 ) and a common outlet opening ( 14 ) for the working medium. 
     
     
         8 . The rotor ( 1 ) according to  claim 1 , wherein the second rotor plates ( 11 ) each comprise at least one inner flow duct ( 23 ) and at least one outer flow duct ( 25 ), each for forming one of the second heat transfer ducts ( 22 ), the outer flow duct ( 25 ) being arranged further outwards in the radial direction than the inner flow duct ( 23 ). 
     
     
         9 . The rotor ( 1 ) according to  claim 1 , wherein the first rotor plates ( 10 ) comprise the second heat transfer ducts ( 22 ) for the heat transfer medium. 
     
     
         10 . The rotor ( 1 ) according to  claim 1 , wherein the compression ducts ( 15 ), the expansion ducts ( 20 ) and the first heat transfer ducts ( 18 ) for the working medium are formed as indentations ( 35 ) starting from an essentially flat first outer surfaces ( 36 A) of the first rotor plates ( 10 ), whereby the second heat transfer ducts ( 22 ) for the heat transfer medium are formed
 i. as indentations ( 35 ) starting from an essentially flat outer surfaces ( 36 ) of the second rotor plates ( 11 ) or   ii. as indentations ( 35 ) starting from an essentially flat second outer surfaces ( 36 B) of the first rotor plates ( 10 ).   
     
     
         11 . The rotor ( 1 ) according to  claim 1 , wherein the first rotor plates ( 10 ) and the second rotor plates ( 11 ) are connected to one another via diffusion connections. 
     
     
         12 . The rotor ( 1 ) according to  claim 1 , wherein the first ( 10 ) and the second rotor plates ( 11 ) are each essentially circular or non-circular, and essentially rectangular. 
     
     
         13 . Method of manufacturing a rotor ( 1 ), comprising a rotary heat pump, comprising the steps:
 Provision of first rotor plates ( 10 ),   provision of second rotor plates ( 11 ),   forming compression ducts ( 15 ), expansion ducts ( 20 ), first heat transfer ducts ( 18 ) for a working medium and second heat transfer ducts ( 22 ) for a heat transfer medium in the first rotor plates ( 10 ) and/or in the second rotor plates ( 11 ),   stacking the first ( 10 ) and second rotor plates ( 11 ), connecting the first rotor plates ( 10 ) to the second rotor plates ( 11 ) along their main planes of extension, and   rotary bearing of a rotor element ( 4 ) formed from the first ( 10 ) and the second rotor plates ( 11 ) about a rotational axis ( 2 ).   
     
     
         14 . The method according to  claim 13 , wherein the first rotor plates ( 10 ) and the second rotor plates ( 11 ) are joined together by diffusion bonding. 
     
     
         15 . The method according to  claim 13 , wherein the compression ducts ( 15 ), the expansion ducts ( 20 ), the first heat transfer ducts ( 18 ) and/or the second heat transfer ducts ( 22 ) are formed by etching or milling in the first and/or in the second rotor plates ( 11 ).