Suction Jet Pump

Abstract

The invention relates to a suction jet pump ( 12 ), composed of a housing ( 18 ) having a connection ( 24 ), a propellant line ( 14 ), a propulsion jet nozzle ( 19 ), a mixing tube ( 15 ) which adjoins said propulsion jet nozzle ( 19 ), and a suction point ( 13 ) arranged upstream of the mixing tube ( 15 ). In addition, the suction jet pump ( 12 ) has a second suction point ( 16 ).

1 .- 13 . (canceled) 
   
   
       14 . An suction jet pump, comprising:
 a housing, having a connection to a motive fluid line, an ejector nozzle, a mixing tube adjoining the ejector nozzle, a first suction point located upstream of the mixing tube for receiving fluid to pumped, and a second suction point for receiving fluid to be pumped.   
   
   
       15 . The suction jet pump of  claim 14 , wherein the second suction point opens into the mixing tube. 
   
   
       16 . The suction jet pump of  claim 15 , further comprising a diffuser on a side of the mixing tube remote from the ejector nozzle, the second suction point opening into the diffuser of the mixing tube. 
   
   
       17 . The suction jet pump of  claim 14 , further comprising a diffuser on a side of the mixing tube remote from the ejector nozzle, wherein the second suction point opens into a section of the mixing tube situated upstream of the diffuser. 
   
   
       18 . The suction jet pump of  claim 14 , wherein the second suction point is arranged in the area of the first suction point relative to the axial extent of the suction jet pump. 
   
   
       19 . The suction jet pump of  claim 14 , wherein the second suction point is located at a location on a periphery of the suction jet pump separated by an angle of 20° to 180° from a location of the first suction point about a longitudinal axis of the suction jet pump. 
   
   
       20 . The suction jet pump of  claim 19 , wherein the angle is between 90° and 180°. 
   
   
       21 . The suction jet pump of  claim 14 , wherein a longitudinal axis of the second suction point is perpendicular to a longitudinal axis of the mixing tube. 
   
   
       22 . The suction jet pump of  claim 14 , wherein a longitudinal axis of the second suction point is arranged at an angle to a longitudinal axis of the mixing tube that is non-perpendicular. 
   
   
       23 . The suction jet pump of  claim 14 , wherein the second suction point is integrally formed with the suction jet pump as only one single piece. 
   
   
       24 . The suction jet pump of  claim 23 , wherein the second suction point is embodied as a connection to which a line for conducting fluid is connectable. 
   
   
       25 . The suction jet pump of  claim 14  wherein the second suction point is embodied as a bore, into which a line for conducting fluid is insertable. 
   
   
       26 . The suction jet pump of  claim 14 , wherein the connection of the motive fluid line is arranged in a radial orientation relative to a longitudinal axis of the suction jet pump and the second suction point has the same radial orientation as the connection. 
   
   
       27 . The suction jet pump of  claim 16 , wherein the diffuser is a separate component configured to connect to the mixing tube. 
   
   
       28 . The suction pump of  claim 27 , wherein the diffuser is connectable to the mixing tube by a snap-socket connection.