Regenerative heat exchanger with a rotor seal with forced guidance

Abstract

A regenerative heat exchanger, including a heat accumulator arranged as a rotor, rotatably held around a central rotational axis, and configured to transmit a heat of at least one gas volume flow passing through the rotor to another gas volume flow passing through the rotor, and including a sealing system for the rotor including at least one seal which is fixed in relation to the rotor, is pressed against the rotor, and is supported by a plurality of rollers on the rotatable rotor.

1 . A regenerative heat exchanger, comprising a heat accumulator arranged as a rotor, rotatably held around a central rotational axis, and configured to transmit a heat of at least one gas volume flow passing through the rotor to another gas volume flow passing through the rotor; and
 a sealing system for the rotor comprising at least one seal which is fixed in relation to the rotor, is pressed against the rotor, and is supported by a plurality of rollers on the rotatable rotor.   
     
     
         2 . The regenerative heat exchanger according to  claim 1 , wherein the rollers are arranged in the seal and/or are fastened to the seal. 
     
     
         3 . The regenerative heat exchanger according to  claim 1 , wherein the rollers roll on at least one corresponding rolling surface on the rotor or are guided between two corresponding rolling surfaces which are axially spaced from one another. 
     
     
         4 . A regenerative heat exchanger according to  claim 3 , wherein at least one of the rolling surfaces is arranged on an exchangeable wearing plate. 
     
     
         5 . A regenerative heat exchanger according to  claim 1 , wherein the individual rollers are arranged at least in the regions of the actuating points of the seal. 
     
     
         6 . A regenerative heat exchanger according  claim 1 , wherein the seal supported by the rollers concerns a circumferential seal and/or a radial seal. 
     
     
         7 . A regenerative heat exchanger according to  claim 6 , wherein a supported circumferential seal is coupled with a radial seal, such that said radial seal is co-moved in the axial direction during axial movement of the circumferential seal. 
     
     
         8 . A regenerative heat exchanger according to  claim 7 , wherein the coupling between the circumferential seal and the radial seal occurs by a mechanical actuating mechanism which transmits the axial movement of the circumferential seal via an actuating bar to the radial seal. 
     
     
         9 . A regenerative heat exchanger according to  claim 8 , wherein the actuating bar is arranged within a rotor housing enclosing the rotor. 
     
     
         10 . A regenerative heat exchanger according to  claim 1 , further comprising at least one sealing sleeve arranged between the seal and the rotor housing.