Fluid Machine

Abstract

[Purpose] To provide a fluid machine improved in lubrication performance and reliability. [Means for Attaining the Purpose] A fluid machine ( 1 ), in which a driving unit ( 4 ) and a driven unit ( 6 ) to which driving force of the driving unit is transmitted through a rotary shaft ( 14 ) are housed in a hermetic container ( 2 ), includes an oil reservoir ( 76 ) located at an inside bottom ( 2 a ) of the hermetic container and storing lubricating oil, and an oil feed mechanism ( 70, 72 ) configured to rotate together with the rotary shaft to supply the lubricating oil in the oil reservoir to individual sliding parts of the driving and driven units, wherein the hermetic container has a baffle section ( 90 ) provided on an inner wall ( 80 d ) thereof and configured to disturb a circumferential flow of the lubricating oil along the inner wall.

1 . A fluid machine in which a driving unit and a driven unit to which driving force of the driving unit is transmitted through a rotary shaft are housed in a hermetic container, comprising:
 an oil reservoir located at an inside bottom of the hermetic container and storing lubricating oil; and   an oil feed mechanism configured to rotate together with the rotary shaft to supply the lubricating oil in the oil reservoir to individual sliding parts of the driving and driven units,   wherein the hermetic container has a baffle section provided on an inner wall thereof and configured to disturb a circumferential flow of the lubricating oil along the inner wall.   
     
     
         2 . The fluid machine according to  claim 1 , wherein the baffle section protrudes from the inner wall of the hermetic container toward the oil reservoir. 
     
     
         3 . The fluid machine according to  claim 2 , further comprising a frame supporting the driving unit and the driven unit,
 wherein the frame is fixed to the baffle section of the hermetic container.   
     
     
         4 . The fluid machine according to  claim 3 , wherein:
 the hermetic container includes a bottom shell formed by forging and molding, and   the baffle section is formed simultaneously with the formation of the bottom shell by forging and molding.   
     
     
         5 . The fluid machine according  claim 4 , wherein the oil reservoir is formed simultaneously with the formation of the bottom shell by forging and molding. 
     
     
         6 . The fluid machine according to  claim 5 , wherein the baffle section has a profile of successive waves bulging toward the oil reservoir. 
     
     
         7 . The fluid machine according to  claim 1 , wherein the baffle section includes a plurality of baffle sections. 
     
     
         8 . The fluid machine according to  claim 1 , wherein pressure of a working fluid drawn into and discharged from the driven unit prevails in an interior of the hermetic container, and the working fluid is carbon dioxide refrigerant.