Separating device and turbomachine comprising separating device

Abstract

The invention relates to a separating device for a turbomachine, comprising at least one housing (12) that has at least one bearing receiving area (24), which defines at least one bearing axis (26), and at least one wheel-side area (28). The separating device also comprises at least one swirling unit (32), which is arranged on the housing (12) in particular, for deflecting and/or swirling at least one fluid and/or particle flow (34), wherein the swirling unit (32) has at least one flow recess (38) which is delimited by a wall (36) of the housing (12) and which extends within the wheel-side area (28) at a distance from the bearing axis (26). According to the invention, the swirling unit (32) comprises at least one seal gap element (40) which is arranged on a wall (36) of the housing (12) and which is designed to deflect and/or swirl at least one fluid and/or particle flow (34) flowing through the flow recess (38) along the bearing axis (26) and/or towards the bearing axis (26).

1 . A separating device for a turbomachine, the separating device having at least one housing ( 12 ) which has at least one bearing receptacle ( 24 ) defining at least one bearing axis ( 26 ) and which has at least one impeller side chamber ( 28 ), and the separating device having at least one swirling unit ( 32 ) for diverting and/or swirling at least one fluid and/or particle flow ( 34 ), wherein the swirling unit ( 32 ) has at least one flow recess ( 38 ), which is delimited by a wall ( 36 ) of the housing ( 12 ) and which extends within the impeller side chamber ( 28 ) so as to be spaced apart from the bearing axis ( 26 ), characterized in that the swirling unit ( 32 ) comprises at least one sealing gap element ( 40 ) which is arranged on a wall ( 36 ) of the housing ( 12 ) and which is configured for diverting and/or swirling at least one fluid and/or particle flow ( 34 ) flowing through the flow recess ( 38 ) along the bearing axis ( 26 ) and/or toward the bearing axis ( 26 ). 
     
     
         2 . The separating device as claimed in  claim 1 , characterized in that the sealing gap element ( 40 ) at least partially delimits the flow recess ( 38 ). 
     
     
         3 . The separating device as claimed in  claim 1 , characterized in that the swirling unit ( 32 ) comprises at least one further sealing gap element ( 88 ) which is arranged on a wall ( 36 ) of the housing ( 12 ) and which at least partially delimits the flow recess ( 38 ). 
     
     
         4 . The separating device as claimed in  claim 1 , characterized in that the swirling unit ( 32 ) comprises at least one further sealing gap element ( 88 ) which, as viewed at least substantially perpendicularly with respect to the bearing axis ( 26 ), has a minimum radial spacing ( 110 ) to the bearing axis ( 26 ) which is greater than a minimum radial spacing ( 112 ) of the sealing gap element ( 40 ) and of the bearing axis ( 26 ), wherein the flow recess ( 38 ) is, as viewed from the bearing axis ( 26 ), arranged between the sealing gap element ( 40 ) and the further sealing gap element ( 88 ). 
     
     
         5 . The separating device as claimed in  claim 1 , characterized in that the swirling unit ( 32 ) comprises at least one further sealing gap element ( 88 ), wherein at least two outer surfaces ( 92 ,  94 ,  96 ), which adjoin one another and which form a sealing edge ( 114 ), of the further sealing gap element ( 88 ) span an angle ( 118 ) of less than 90° as viewed at least substantially perpendicularly with respect to the bearing axis ( 26 ). 
     
     
         6 . The separating device as claimed in  claim 1 , characterized in that the swirling unit ( 32 ) comprises at least one further sealing gap element ( 88 ) which has a sealing edge ( 114 ) arranged such that at least one of two outer surfaces ( 92 ,  96 ), which form a sealing edge ( 114 ), of the further sealing gap element ( 88 ) is oriented at least substantially parallel to the bearing axis ( 26 ). 
     
     
         7 . A turbomachine, comprising
 at least one drive unit ( 14 ) which has at least one drive axis ( 16 ),   at least one conveying unit ( 18 ) which is driven around the drive axis ( 16 ), which serves for conveying a fluid and which has at least one conveying element ( 22 ), and   at least one separating device ( 20 ) having at least one housing ( 12 ) which has at least one bearing receptacle ( 24 ) defining at least one bearing axis ( 26 ) and which has at least one impeller side chamber ( 28 ), and the separating device having at least one swirling unit ( 32 ) for diverting and/or swirling at least one fluid and/or particle flow ( 34 ), wherein the swirling unit ( 32 ) has at least one flow recess ( 38 ), which is delimited by a wall ( 36 ) of the housing ( 12 ) and which extends within the impeller side chamber ( 28 ) so as to be spaced apart from the bearing axis ( 26 ), characterized in that the swirling unit ( 32 ) comprises at least one sealing gap element ( 40 ) which is arranged on a wall ( 36 ) of the housing ( 12 ) and which is configured for diverting and/or swirling at least one fluid and/or particle flow ( 34 ) flowing through the flow recess ( 38 ) along the bearing axis ( 26 ) and/or toward the bearing axis ( 26 ), wherein the conveying unit ( 18 ) is arranged at least predominantly within the impeller side chamber ( 28 ) around the drive axis ( 16 ).   
     
     
         8 . The turbomachine as claimed in  claim 7 , characterized in that a maximum spacing ( 120 ), oriented at least substantially parallel to the drive axis ( 16 ), between the sealing gap element ( 40 ) and the conveying element ( 22 ) is less than 2 mm. 
     
     
         9 . The turbomachine as claimed in  claim 7 , characterized in that the swirling unit ( 32 ) has at least one further sealing gap element ( 88 ) which, as viewed at least substantially perpendicularly with respect to the drive axis ( 16 ), is arranged at least partially within a maximum longitudinal extent ( 102 ) of the conveying element ( 22 ). 
     
     
         10 . The turbomachine as claimed in  claim 9 , characterized in that a maximum spacing ( 124 ), oriented at least substantially perpendicular to the drive axis ( 16 ), between the further sealing gap element ( 88 ) and the conveying element ( 22 ) is less than 2 mm. 
     
     
         11 . The turbomachine as claimed in  claim 7 , characterized in that the conveying element ( 22 ) has at least one bevel and/or at least one rounded portion ( 134 ) in an edge region on at least a side facing toward the sealing gap element ( 40 ) and/or the flow recess ( 38 ). 
     
     
         12 . The turbomachine as claimed in  claim 7 , characterized in that the sealing gap element ( 40 ) has a minimum radial spacing ( 112 ) to the drive axis ( 16 ) which corresponds to at most 90% of a maximum radial extent ( 142 ) of the conveying element ( 22 ) around the drive axis ( 16 ). 
     
     
         13 . The separating device as claimed in  claim 1 , wherein the swirling unit ( 32 ) is arranged on the housing ( 12 ). 
     
     
         14 . A coolant pump comprising
 at least one drive unit ( 14 ) which has at least one drive axis ( 16 ),   at least one conveying unit ( 18 ), which is an impeller disk, which is driven around the drive axis ( 16 ), which serves for conveying a coolant, and which has at least one conveying element ( 22 ), wherein the conveying element is a vane, and   at least one separating device ( 20 ) having at least one housing ( 12 ) which has at least one bearing receptacle ( 24 ) defining at least one bearing axis ( 26 ) and which has at least one impeller side chamber ( 28 ), and the separating device having at least one swirling unit ( 32 ) for diverting and/or swirling at least one fluid and/or particle flow ( 34 ), wherein the swirling unit ( 32 ) has at least one flow recess ( 38 ), which is delimited by a wall ( 36 ) of the housing ( 12 ) and which extends within the impeller side chamber ( 28 ) so as to be spaced apart from the bearing axis ( 26 ), characterized in that the swirling unit ( 32 ) comprises at least one sealing gap element ( 40 ) which is arranged on a wall ( 36 ) of the housing ( 12 ) and which is configured for diverting and/or swirling at least one fluid and/or particle flow ( 34 ) flowing through the flow recess ( 38 ) along the bearing axis ( 26 ) and/or toward the bearing axis ( 26 ), wherein the conveying unit ( 18 ) is arranged at least predominantly within the impeller side chamber ( 28 ) around the drive axis ( 16 ).   
     
     
         15 . The turbomachine as claimed in  claim 14 , characterized in that a maximum spacing ( 120 ), oriented at least substantially parallel to the drive axis ( 16 ), between the sealing gap element ( 40 ) and the conveying element ( 22 ) is less than 2 mm. 
     
     
         16 . The turbomachine as claimed in  claim 15 , characterized in that the swirling unit ( 32 ) has at least one further sealing gap element ( 88 ) which, as viewed at least substantially perpendicularly with respect to the drive axis ( 16 ), is arranged at least partially within a maximum longitudinal extent ( 102 ) of the conveying element ( 22 ). 
     
     
         17 . The turbomachine as claimed in  claim 16 , characterized in that a maximum spacing ( 124 ), oriented at least substantially perpendicular to the drive axis ( 16 ), between the further sealing gap element ( 88 ) and the conveying element ( 22 ) is less than 2 mm. 
     
     
         18 . The turbomachine as claimed in  claim 17 , characterized in that the conveying element ( 22 ) has at least one bevel and/or at least one rounded portion ( 134 ) in an edge region on at least a side facing toward the sealing gap element ( 40 ) and/or the flow recess ( 38 ). 
     
     
         19 . The turbomachine as claimed in  claim 18 , characterized in that the sealing gap element ( 40 ) has a minimum radial spacing ( 112 ) to the drive axis ( 16 ) which corresponds to at most 90% of a maximum radial extent ( 142 ) of the conveying element ( 22 ) around the drive axis ( 16 ).