Jet pump

Abstract

A jet pump may include a body that may include an inlet portion having a motive port and a first induce port, a throat, a tapered wall connecting the inlet portion with the throat, a discharge port, and a diffuser connecting the throat and the discharge port. The tapered wall may include a converging angle of about 5 degrees.

What is claimed is: 
     
         1 . A jet pump, comprising:
 a body, including:
 an inlet portion including a motive port and a first induce port; 
 a throat; 
 a tapered wall connecting the inlet portion with the throat; 
 a discharge port; and 
 a diffuser connecting the throat and the discharge port. 
   
     
     
         2 . The jet pump of  claim 1 , wherein the tapered wall includes a converging angle of about 5 degrees. 
     
     
         3 . The jet pump of  claim 1 , wherein the inlet portion includes a first nozzle. 
     
     
         4 . The jet pump of  claim 3 , wherein an outlet or end of the first nozzle is at least partially aligned with the tapered wall such that a motive flow flowing from the motive port out of the first nozzle mixes with an induced flow from the first induce port proximate the tapered wall. 
     
     
         5 . The jet pump of  claim 4 , wherein the motive port and the first induce port are disposed substantially concentrically and the first induce port includes a greater outer diameter than the motive port. 
     
     
         6 . The jet pump of  claim 1 , wherein the inlet portion includes a first nozzle, a second induce port and a second nozzle. 
     
     
         7 . The jet pump of  claim 6 , wherein the motive port, the first induce port, and the second induce port are disposed substantially concentrically. 
     
     
         8 . The jet pump of  claim 7 , wherein the second induce port includes a greater outer diameter than the motive port and the first induce port. 
     
     
         9 . The jet pump of  claim 8 , wherein the first nozzle is offset in an axial direction from the second nozzle. 
     
     
         10 . The jet pump of  claim 6 , wherein the tapered wall includes a converging angle and the second nozzle includes a second converging angle.