First stage turbine housing for an air cycle machine

Abstract

A housing of an air cycle machine includes a static seal portion, a main bore housing portion, a shroud pilot housing portion, and a thrust plate housing portion. The static seal portion is arranged about a central axis and defines static seal radius D 1 . The main bore housing portion is arranged about the central axis and circumscribes the shaft arranged along the central axis. The main bore housing defines central bore inner radius D 2 . The shroud pilot housing radius is arranged about the central axis and defines shroud pilot radius D 3 . The thrust plate housing portion is arranged about the central axis and defines insulator seal plate radius D 4 . A ratio D 1 /D 2 is 0.8394 to 0.8416, a ratio D 1 /D 3 is 0.4315 to 0.4322, a ratio D 1 /D 4 is 0.2517 to 0.2521, a ratio D 2 /D 3 is 0.5130 to 0.5146, a ratio D 2 /D 4 is 0.2993-0.3001, and a ratio D 3 /D 4 is 0.5828-0.5838.

1 . A housing of an air cycle machine, the housing comprising:
 a static seal portion arranged about a central axis and configured to circumscribe a static seal defined by a shaft arranged along the central axis, the static seal portion defining a static seal radius D 1 ;   a main bore housing portion arranged about the central axis and positioned longitudinally adjacent to the static seal portion, the main bore housing configured to circumscribe the shaft, the main bore housing defining a central bore inner radius D 2 ;   a shroud pilot housing portion arranged about the central axis, the shroud pilot housing portion defining a shroud pilot radius D 3 ; and   an insulator seal plate housing portion arranged about the central axis and configured to mate with an adjacent turbine section component, the insulator seal plate housing portion defining an insulator seal plate radius D 4 , wherein a ratio D 1 /D 2  is 0.8394 to 0.8416, a ratio D 1 /D 3  is 0.4315 to 0.4322, a ratio D 1 /D 4  is 0.2517 to 0.2521, a ratio D 2 /D 3  is 0.5130 to 0.5146, a ratio D 2 /D 4  is 0.2993-0.3001, and a ratio D 3 /D 4  is 0.5828-0.5838.   
     
     
         2 . The housing of  claim 1  wherein the static seal radius is between 2.0724 cm and 2.07365 cm. 
     
     
         3 . The housing of  claim 1  wherein the main bore housing radius is between 2.4638 cm and 2.4689 cm. 
     
     
         4 . The housing of  claim 1  wherein the shroud pilot housing radius is between 4.79805 cm and 4.80315 cm. 
     
     
         5 . The housing of  claim 1  wherein the insulator seal plate housing radius is between 8.22705 cm and 8.23215 cm. 
     
     
         6 . The housing of  claim 1 , wherein the turbine section component is a turbine section housing. 
     
     
         7 . The housing of  claim 1 , wherein the turbine section component is a first stage turbine section housing. 
     
     
         8 . The housing of  claim 1 , wherein the shroud housing pilot portion is configured to mate with an adjacent turbine section component. 
     
     
         9 . An air cycle machine comprises:
 a shaft;   a fan section arranged around a portion of the shaft, the fan section capable of routing a first working fluid;   a compressor section arranged adjacent to the fan section and positioned around the shaft, the compressor section capable of compressing a second working fluid;   a turbine section arranged adjacent to the compressor section and positioned around the shaft, the turbine section capable of converting potential energy of the second working fluid to rotational energy;   a heat exchanger capable of exchanging heat between the first working fluid and the second working fluid; and   a housing comprising:
 a static seal portion arranged about a central axis and configured to circumscribe a static seal defined by a shaft arranged along the central axis, the static seal portion defining a static seal radius D 1 ; 
 a main bore housing portion arranged about the central axis and positioned longitudinally adjacent to the static seal portion, the main bore housing configured to circumscribe the shaft, the main bore housing defining a central bore inner radius D 2 ; 
 a shroud pilot housing portion arranged about the central axis, the shroud pilot housing portion defining a shroud pilot radius D 3 ; and 
 an insulator seal plate housing portion arranged about the central axis and configured to mate with an adjacent turbine section component, the insulator seal plate housing portion defining an insulator seal plate radius D 4 , wherein a ratio D 1 /D 2  is 0.8394 to 0.8416, a ratio D 1 /D 3  is 0.4315 to 0.4322, a ratio D 1 /D 4  is 0.2517 to 0.2521, a ratio D 2 /D 3  is 0.5130 to 0.5146, a ratio D 2 /D 4  is 0.2993-0.3001, and a ratio D 3 /D 4  is 0.5828-0.5838. 
   
     
     
         10 . The air cycle machine of  claim 9 , wherein the second working fluid passes through the heat exchanger between the compressor section and the turbine section. 
     
     
         11 . The air cycle machine of  claim 9 , wherein the fan section, the compressor section, and the turbine section are connected by the shaft to form a single spool. 
     
     
         12 . The housing of  claim 9  wherein the static seal radius is between 0.8159 in. and 0.8164 in. 
     
     
         13 . The housing of  claim 9  wherein the main bore housing radius is between 0.9700 in. and 0.9720 in. 
     
     
         14 . The housing of  claim 9  wherein the shroud pilot housing radius is between 1.8890 in. and 1.8910 in. 
     
     
         15 . The housing of  claim 9  wherein the insulator seal plate housing radius is between 3.2390 in. and 3.2410 in.