Turbo machine

Abstract

A turbo machine includes an impeller that rotates to make gas flow, a driving device that rotationally drives the impeller, a rotary shaft that transmits a rotational driving force of the driving device to the impeller, a bearing that rotatably supports the rotary shaft, and a casing that houses at least the driving device and the rotary shaft. In addition, the casing is provided with a grease flow path to supply grease to the bearing for lubricating the bearing.

1 . A turbo machine comprising:
 an impeller that rotates to make gas flow;   a driving device that rotationally drives the impeller;   a rotary shaft that transmits a rotational driving force of the driving device to the impeller;   a bearing that rotatably supports the rotary shaft; and   a casing that houses at least the driving device and the rotary shaft,   wherein the casing is provided with a grease flow path to supply grease to the bearing for lubricating the bearing.   
     
     
         2 . The turbo machine according to  claim 1 ,
 wherein the casing includes a casing body that houses at least the driving device and the rotary shaft, and a bearing supporting member that is detachably installed in the casing body and supports the bearing,   the casing body is provided with a first flow path that forms a portion of the grease flow path, and   the bearing supporting member is provided with a second flow path that forms a portion of the grease flow path and communicates with the first flow path.   
     
     
         3 . The turbo machine according to  claim 2 ,
 wherein a direction in which the first flow path and the second flow path communicate with each other is the same as a direction in which the bearing supporting member is attached and detached.   
     
     
         4 . The turbo machine according to  claim 2 ,
 wherein the bearing supporting member is provided with a circular flow path that is circularly disposed around the rotational axis of the rotary shaft, and   the circular flow path forms a portion of the second flow path and is disposed so as to communicate with the first flow path.   
     
     
         5 . The turbo machine according to  claim 3 ,
 wherein the bearing supporting member is provided with a circular flow path that is circularly disposed around the rotational axis of the rotary shaft, and   the circular flow path forms a portion of the second flow path and is disposed so as to communicate with the first flow path.   
     
     
         6 . The turbo machine according to  claim 2 ,
 wherein the bearing supporting member includes a grease storing portion for storing grease which is discharged from the bearing.   
     
     
         7 . The turbo machine according to  claim 3 ,
 wherein the bearing supporting member includes a grease storing portion for storing grease which is discharged from the bearing.   
     
     
         8 . The turbo machine according to  claim 4 ,
 wherein the bearing supporting member includes a grease storing portion for storing grease which is discharged from the bearing.