Central heating system for heating rooms

Abstract

The invention pertains to a central heating system ( 10 ) for heating rooms of one or more buildings ( 2 ) with a pipeline network with supply and return lines ( 18, 20 ), at least one flow limiter ( 26 ) arranged in the pipeline network, a fluid as thermal medium in the pipeline network, several heating circuits ( 32 ) each connected to the pipeline network via circuit supply and return lines ( 24, 30 ), each circuit having a temperature control valve ( 28 ) for regulation/control of room temperature and at least one heating element ( 22 ). The invention is characterized in that a flow limiter ( 26 ) is inserted into each circuit supply or return line ( 24, 30 ), associated with each heating circuit ( 32 ).

I claim:  
     
         1 . A central heating system ( 10 ) for heating rooms in one or more buildings ( 2 ) with a pipeline network having supply and return pipelines ( 18 ,  20 ), at least one flow limiter ( 26 ) arranged in the pipeline network, a fluid thermal medium located in the pipeline network, a plurality of heating circuits ( 32 ) each connected to the pipeline network in parallel to each other via circuit supply and return lines ( 24 ,  30 ), each circuit having a valve ( 28 ) for regulation/control of room temperature and at least one heating element ( 22 ), characterized in that a flow limiter ( 26 ) is inserted into the circuit supply or return line ( 24 ,  30 ), and is associated with each heating circuit ( 32 ).  
     
     
         2 . The central heating system according to  claim 1 , characterized in that the pipeline network consists of a plurality of subcircuits ( 12   a ,  12   b ,  12   c ), arranged on different floors ( 8   a ,  8   b ,  8   c ) of a building ( 2 ), to which a plurality of subcircuit heating circuits ( 32 ) are connected in parallel to each other.  
     
     
         3 . The central heating system according to  claim 2 , characterized in that the plurality of subcircuits ( 12   a ,  12   b ,  12   c ) are supplied via vertical supply and vertical return lines ( 14 ,  16 ).  
     
     
         4 . The central heating system according to  claim 1 , characterized in that the flow limiters ( 26 ) are inserted exclusively into the circuit supply or return lines ( 24 ,  30 ) of each heating circuit ( 32 ).  
     
     
         5 . The central heating system according to  claim 1 , characterized in that the flow limiter ( 26 ) is installed in a supply line ( 24 ) of a heating circuit ( 32 ).  
     
     
         6 . The central heating system according to  claim 5 , characterized in that the flow limiter ( 26 ) is located upstream of the valve ( 28 ).  
     
     
         7 . The central heating system according to  claim 5 , characterized in that the flow limiter ( 26 ) is located downstream of the valve ( 28 ).  
     
     
         8 . The central heating system according to  claim 1 , characterized in that the flow limiter ( 26 ) is installed in the circuit return line ( 30 ) of a heating circuit ( 32 ).  
     
     
         9 . The central heating system according to  claim 2 , characterized in that an installation site of each flow limiter ( 26 ) in the circuit supply or return lines ( 24 ,  30 ) of the heating circuits ( 32 ) is uniform for all heating circuits ( 32 ) of a subcircuit ( 12   a ,  12   b ,  12   c ).  
     
     
         10 . The central heating system according to  claim 9 , characterized in that the installation site of each flow limiter ( 26 ) in the circuit supply or return line ( 24 ,  30 ) of the heating circuits ( 32 ) is different in at least two subcircuits ( 12   a ,  12   b ,  12   c ).  
     
     
         11 . The central heating system according to one of  claim 1 , characterized in that an installation site of the flow limiters ( 26 ) in the circuit supply or return outflow line ( 24 ,  30 ) of the heating circuits ( 32 ) is uniform for all heating circuits ( 32 ) in the pipeline network.  
     
     
         12 . The central heating system according to  claim 1 , characterized in that the flow limiters ( 26 ) are interchangeable in the pipeline network.  
     
     
         13 . The central heating system according to  claim 1 , characterized in that the valve ( 28 ) and the flow limiter ( 26 ) form an integral structural unit.  
     
     
         14 . The central heating system according to  claim 1 , characterized in that the flow limiters ( 26 ) provide an equally large pressure gradient at all flow limiters ( 26 ), independent of the existing pressure condition and independent of the size, number and construction of the heating elements ( 22 ) of a heating circuit ( 32 ).