Integrated instrument assembly for compressors

Abstract

An integrated instrument assembly for compressors, having a pressure switch and a pressure reducer connected to each other by a pneumatic circuit, is connectable to a compressor having a compressed-air tank communicating with the pneumatic circuit; the pressure switch and pressure reducer being supported on a supporting member having the pneumatic circuit.

1 ) An integrated instrument assembly for compressors, comprising a pressure switch ( 10 ) and a pressure reducer ( 11 ) connected to each other by a pneumatic circuit ( 16 ); the instrument assembly ( 5 ) being connectable to a compressor ( 1 ) comprising a compressed-air tank ( 2 ) communicating with said pneumatic circuit ( 16 ); and the instrument assembly ( 5 ) being characterized by comprising a supporting member ( 15 ) for supporting said pressure switch ( 10 ) and said pressure reducer ( 11 ) and having said pneumatic circuit ( 16 ).  
     
     
         2 ) An instrument assembly as claimed in  claim 1 , characterized in that said supporting member ( 15 ) comprises a plate ( 15 ) in which said pneumatic circuit ( 16 ) is formed.  
     
     
         3 ) An instrument assembly as claimed in  claim 1 , wherein said instrument assembly ( 5 ) is connectable to a motor ( 3 ); said instrument assembly ( 5 ) comprising, for said motor ( 3 ), a safety device ( 14 ) carried by said supporting member ( 15 ).  
     
     
         4 ) An instrument assembly as claimed in  claim 1 , characterized by comprising a first pressure gauge ( 12 ) carried by said supporting member ( 15 ) and communicating with said pneumatic circuit ( 16 ) to indicate the pressure of the air in said tank ( 2 ).  
     
     
         5 ) An instrument assembly as claimed in  claim 1 , characterized by comprising a second pressure gauge ( 13 ) carried by said supporting member ( 15 ) and connected, along said pneumatic circuit ( 16 ), to said pressure reducer ( 11 ) to indicate the regulated pressure of the air to be supplied to the outside.  
     
     
         6 ) An instrument assembly as claimed in  claim 1 , wherein said supporting member comprises first valve means ( 25 ) for connecting an inlet ( 17 ) of said pneumatic circuit ( 16 ) to said tank ( 2 ).  
     
     
         7 ) An instrument assembly as claimed in  claim 1 , wherein said supporting member comprises second valve means ( 26 ) for controlling the pressure in said tank ( 2 ).  
     
     
         8 ) An instrument assembly as claimed in  claim 1 , characterized by comprising at least one air supply tap ( 8 ,  9 ) fitted to said supporting member ( 15 ) and communicating with said pneumatic circuit ( 16 ).  
     
     
         9 ) An instrument assembly as claimed in  claim 8 , characterized in that said pressure reducer ( 11 ) comprises third valve means ( 29 ) for connecting said supply tap ( 8 ,  9 ) to said tank ( 2 ) to supply air to the outside.  
     
     
         10 ) An instrument assembly as claimed in  claim 6 , characterized in that said supporting member ( 15 ) comprises fourth valve means for connecting said inlet ( 17 ) with the outside.  
     
     
         11 ) An instrument assembly as claimed in  claim 1 , characterized in that said supporting member ( 15 ) is formed in one piece by a casting process.