Refrigerant pump assembly

Abstract

A refrigerant pump assembly includes a drive motor ( 2 ) and a centrifugal pump ( 4 ). The centrifugal pump ( 4 ) is surrounded by a tubular container ( 18 ) which with a first axial end is sealingly connected to a motor housing of the drive motor ( 2 ) and at an opposite axial end ( 20 ) is designed in a closed manner.

1 . A refrigerant pump assembly including a drive motor ( 2 ) and a centrifugal pump ( 4 ), the centrifugal pump ( 4 ) surrounded by a tubular container ( 18 ) which with a first axial end is sealingly connected to a motor housing of the drive motor ( 2 ) and at an opposite axial end ( 20 ) is designed in a closed manner. 
     
     
         2 . The refrigerant pump assembly according to  claim 1 , wherein the tubular container ( 18 ) comprises a suction connection ( 24 ) and a pressure connection ( 26 ). 
     
     
         3 . The refrigerant pump assembly according to  claim 2 , wherein the suction connection ( 24 ) or the pressure connection ( 26 ) extends away from the container ( 18 ) in the radial direction. 
     
     
         4 . The refrigerant pump assembly according to  claim 1 , wherein the container ( 18 ) comprises a closed wall. 
     
     
         5 . The refrigerant pump assembly according to  claim 3 , wherein the suction connection ( 24 ) or the pressure connection ( 26 ) is provided with connection flanges ( 30 ). 
     
     
         6 . The refrigerant pump assembly according to  claim 3 , wherein the suction connection ( 24 ) or the pressure connection ( 26 ) is designed for the direct welding to a connection conduit. 
     
     
         7 . The refrigerant pump assembly according to  claim 2 , wherein an annular separating wall is arranged in the container ( 18 ) and separates the suction side ( 24 ) and the pressure side ( 26 ) of the centrifugal pump ( 4 ) from one another. 
     
     
         8 . The refrigerant pump assembly according to  claim 1 , wherein the container ( 18 ) is releasably connected to the motor housing of the drive motor ( 2 ). 
     
     
         9 . The refrigerant pump assembly according to  claim 1 , wherein the drive motor ( 2 ) is a canned motor. 
     
     
         10 . The refrigerant pump assembly according to  claim 1 , wherein the container ( 18 ) is designed in a pressure-resistant manner for the system pressure of the refrigerant to be delivered.