Case assembly for a gas turbine engine

Abstract

A case for a gas turbine engine includes an integrated HPC Diffuser case operable to contain a combustor section and a portion of a High Pressure Compressor.

What is claimed is: 
     
         1 . A case for a gas turbine engine comprising:
 an integrated High Pressure Compressor Diffuser case operable to contain a combustor section and a portion of a compressor section.   
     
     
         2 . The case as recited in  claim 1 , wherein said integrated HPC Diffuser case is a housing with a reinforced area. 
     
     
         3 . The case as recited in  claim 2 , wherein said reinforced area defines an increased thickness. 
     
     
         4 . The case as recited in  claim 1 , wherein said integrated HPC Diffuser case includes a HPC flange to provide a bolted connection with a HPC case. 
     
     
         5 . The case as recited in  claim 1 , wherein said integrated HPC Diffuser case includes a HPT flange to provide a bolted connection with a HPT case. 
     
     
         6 . The case as recited in  claim 1 , wherein said integrated HPC Diffuser case includes a HPC flange to provide a bolted connection with a HPC case and a HPT flange to provide a bolted connection with a HPT case. 
     
     
         7 . The case as recited in  claim 6 , wherein no flange is located between said HPC flange and said HPT flange. 
     
     
         8 . The case as recited in  claim 7 , wherein a boss arrangement is located between said HPC flange and said HPT flange. 
     
     
         9 . The case as recited in  claim 1 , wherein said portion of said compressor section includes two stages. 
     
     
         10 . The case as recited in  claim 1 , wherein said portion of said compressor section includes two stages of an eight stage High Pressure Compressor. 
     
     
         11 . A case assembly of a gas turbine engine comprising:
 a fan case;   an intermediate case boltable to said fan case;   a High Pressure Compressor case boltable to said intermediate case;   an integrated High Pressure Compressor Diffuser case boltable to said High Pressure Compressor case;   a High Pressure Turbine case boltable to said integrated High Pressure Compressor Diffuser case;   a Mid Turbine Frame case boltable to said High Pressure Turbine case;   a Low Pressure Turbine case boltable to said Mid Turbine Frame case; and   a Turbine Exhaust case boltable to said Low Pressure Turbine case.   
     
     
         12 . The case assembly as recited in  claim 11 , wherein said integrated HPC Diffuser case includes a housing with a reinforced area. 
     
     
         13 . The case assembly as recited in  claim 12 , wherein said reinforced area defines an increased thickness. 
     
     
         14 . The case assembly as recited in  claim 13 , wherein said integrated HPC Diffuser case includes a HPC flange to provide a bolted connection with a HPC case and a HPT flange to provide a bolted connection with a HPT case. 
     
     
         15 . The case assembly as recited in  claim 14 , wherein a boss arrangement is located between said HPC flange and said HPT flange. 
     
     
         16 . The case assembly as recited in  claim 11 , wherein said integrated HPC Diffuser case is operable to contain a combustor section and a portion of a High Pressure Compressor. 
     
     
         17 . The case assembly as recited in  claim 16 , wherein said portion of said High Pressure Compressor includes two stages. 
     
     
         18 . The case assembly as recited in  claim 16 , wherein said portion of said High Pressure Compressor includes two stages of an eight stage High Pressure Compressor. 
     
     
         19 . The case assembly as recited in  claim 11 , wherein said High Pressure Compressor case is a split case.