Heating system and method for operating a heating system

Abstract

In a method for operating a heating system, a heating circuit medium is guided in an overall heating circuit and in first and second sub-heating circuits connected to the overall heating circuit. A heating circuit medium volumetric flow through the sub-heating circuits is defined by a valve device and fed to the second sub-heating circuit via a first valve device connection and/or guided via a second valve device connection. The heating circuit medium volumetric flow is fed via a connection of the valve device connected to the overall heating circuit. If necessary, the heating circuit medium volumetric flow is fed to the first sub-heating circuit via the second connection of the valve device, and if necessary, the heating circuit medium volumetric flow is delivered via a bypass on the second sub-heating circuit. If necessary, the heating circuit volumetric flow is guided through a buffer store at the bypass.

1 . A heating system comprising an overall heating circuit ( 1 ) guiding a heating circuit medium and a first and a second sub-heating circuit ( 1 . 1 ,  1 . 2 ) connected in each case to the overall heating circuit ( 1 ) and also guiding the heating circuit medium, wherein a valve device ( 2 ) is provided for defining a heating circuit medium volumetric flow through the sub-heating circuits ( 1 . 1 ,  1 . 2 ), wherein the valve device ( 2 ) has a first connection ( 2 . 1 ) connected to the second sub-heating circuit ( 1 . 2 ), a second connection ( 2 . 2 ) and a third connection ( 2 . 3 ) connected to the overall heating circuit ( 1 ), wherein the second connection ( 2 . 2 ) is configured to be connected to a feed ( 1 . 1 . 1 ) for the first sub-heating circuit ( 1 . 1 ), wherein a heat consumer ( 11 ) is arranged on the first sub-heating circuit ( 1 . 1 ), wherein a sub-heating circuit pump ( 4 ) and a heat consumer ( 5 ) are arranged on the second sub-heating circuit ( 1 . 2 ), and a bypass ( 7 ) is provided,
 wherein   a buffer store ( 8 ) is provided on the second sub-heating circuit ( 1 . 2 ).   
     
     
         2 . The heating system according to  claim 1 , wherein the overall heating circuit ( 1 ) has a flow line ( 1 . 0 . 1 ) and a return line ( 1 . 0 . 2 ),
 wherein   the valve device ( 2 ) is arranged on the flow line ( 1 . 0 . 1 ) of the overall heating circuit ( 1 ).   
     
     
         3 . The heating system according to  claim 1 , wherein the overall heating circuit ( 1 ) has a flow line ( 1 . 0 . 1 ) and a return line ( 1 . 0 . 2 ),
 wherein   a line branching ( 3 ) with three line connections is provided on the return line ( 1 . 0 . 2 ) of the overall heating circuit ( 1 ), wherein the first line connection ( 3 . 1 ) is configured to be hydraulically connected to the first sub-heating circuit ( 1 . 1 ), the second line connection ( 3 . 2 ) to the second sub-heating circuit ( 1 . 2 ) and the third line connection ( 3 . 3 ) to the return line ( 1 . 0 . 2 ) of the overall heating circuit ( 1 ).   
     
     
         4 . The heating system according to  claim 1 ,
 wherein   on the second sub-heating circuit ( 1 . 2 ), when viewed in the direction of flow of the heating circuit medium, on the one hand, a first branching ( 6 . 1 ) is provided upstream of the sub-heating circuit pump ( 4 ) and upstream of the heat consumer ( 5 ) and, on the other hand, a second branching ( 6 . 2 ) is provided downstream of the sub-heating circuit pump ( 4 ) and downstream of the heat consumer ( 5 ).   
     
     
         5 . The heating system as claimed in  claim 4 ,
 wherein   the two branchings ( 6 . 1 ,  6 . 2 ) are configured to be hydraulically connected together via the bypass ( 7 ).   
     
     
         6 . The heating system as claimed in  claim 5 ,
 wherein   the bypass ( 7 ) is configured to be provided with the buffer store ( 8 ) which is hydraulically connected, on the one hand, to the first branching ( 6 . 1 ) and, on the other hand, to the second branching ( 6 . 2 ).   
     
     
         7 . A method for operating a heating system, in which a heating circuit medium is guided in an overall heating circuit ( 1 ), in which the heating circuit medium is guided in a first and a second sub-heating circuit ( 1 . 1 ,  1 . 2 ) connected to the overall heating circuit ( 1 ), in which a heating circuit medium volumetric flow through the sub-heating circuits ( 1 . 1 ,  1 . 2 ) is defined by a valve device ( 2 ), in which the heating circuit medium volumetric flow is fed via a first connection ( 2 . 1 ) of the valve device ( 2 ) to the second sub-heating circuit ( 1 . 2 ) and/or is guided via a second connection ( 2 . 2 ) of the valve device ( 2 ) and in which the heating circuit medium volumetric flow is fed to the valve device ( 2 ) via a connection ( 2 . 3 ) which is connected to the overall heating circuit ( 1 ), wherein the heating circuit medium volumetric flow, if required, is fed to the first sub-heating circuit ( 1 . 1 ) via the second connection ( 2 . 2 ) of the valve device ( 2 ), wherein the heating circuit medium volumetric flow, if required, is delivered via a bypass ( 7 ) provided on the second sub-heating circuit ( 1 . 2 ),
 wherein   the heating circuit medium volumetric flow, if required, is guided on the bypass ( 7 ) through a buffer store ( 8 ).   
     
     
         8 . The method according to  claim 7 ,
 wherein   a usable temperature at a heat consumer ( 5 ) of the second sub-heating circuit ( 1 . 2 ) is regulated via a rotational speed of a sub-heating circuit pump ( 4 ) of the second sub-heating circuit ( 1 . 2 ).   
     
     
         9 . The method according to  claim 7 ,
 wherein   a proportion of the heating circuit medium volumetric flow guided through the buffer store ( 8 ) is regulated by means of the valve device ( 2 ) and by means of a rotational speed of a sub-heating circuit pump ( 4 ) of the second sub-heating circuit ( 1 . 2 ).   
     
     
         10 . The method according to  claim 7 ,
 wherein   the heating circuit medium, if required, is selectively guided by the valve device ( 2 ) entirely via the first sub-heating circuit ( 1 . 1 ) or entirely via the second sub-heating circuit ( 1 . 2 ).   
     
     
         11 . The method according to  claim 7 ,
 wherein   a distribution of the heating circuit medium, which flows in via the connection ( 2 . 3 ), to the connections ( 2 . 1 ,  2 . 2 ) is set by the valve device ( 2 ).