Pineapple pump

Abstract

A pineapple pump is provided. The pineapple pump includes a rotor chamber and a rotor. The rotor chamber may include a plurality of cooling columns for thermal management. The rotor is rotatably disposed in the rotor chamber and the cooling columns are located at a fluid outlet of the rotor. The rotor has a rotary shaft to deliver a tangential torque. When the rotor rotates with the rotary shaft to guide a fluid, the fluid has a radial displacement perpendicular to the tangential torque of the rotor, thereby de-coupling the tangential torque and a pressure gradient of the fluid caused by the rotor.

What is claimed is: 
     
         1 . A pineapple pump, comprising:
 a rotor chamber comprising a plurality of cooling columns therein; and   a rotor rotatably disposed in the rotor chamber and comprising a rotary shaft, wherein the cooling columns are located above the rotor, and when a fluid moves in a radial direction of the rotor, the fluid is guided by a rotation of the rotor, such that the fluid has a radial displacement perpendicular to a tangential torque of the rotor.   
     
     
         2 . The pineapple pump according to  claim 1 , wherein the rotor comprises a first surface, a second surface opposite to the first surface, and a side surface, wherein the side surface is connected between the first surface and the second surface, and an area of the first surface is smaller than an area of the second surface. 
     
     
         3 . The pineapple pump according to  claim 2 , wherein the first surface and the second surface are parallel to a radial direction of the rotor. 
     
     
         4 . The pineapple pump according to  claim 2 , wherein the rotor chamber comprises a recess around which a plurality of first slots are formed, the first surface of the rotor faces the recess, and the side surface of the rotor comprises a plurality of second slots formed thereon. 
     
     
         5 . The pineapple pump according to  claim 1 , further comprising:
 a cooling fin disposed outside the rotor chamber and connected with the cooling columns.   
     
     
         6 . The pineapple pump according to  claim 5 , wherein a material of the cooling fin comprises copper or alloy of copper/graphite. 
     
     
         7 . The pineapple pump according to  claim 1 , wherein a material of the cooling columns comprises copper or alloy of copper/graphite. 
     
     
         8 . The pineapple pump according to  claim 1 , further comprising:
 an inlet port connected with the rotor chamber, wherein the rotor rotates with the rotary shaft, such that the fluid is drawn into the rotor chamber via the inlet port; and   an outlet port connected with the rotor chamber and communicating with the inlet port, wherein the fluid flows out via the outlet port when the fluid moves in the radial direction of the rotor.   
     
     
         9 . The pineapple pump according to  claim 1 , further comprising:
 an opening connected with the rotor chamber; and   a power device connected with the rotor through the opening to move the fluid in the radial direction of the rotor.   
     
     
         10 . The pineapple pump according to  claim 5 , wherein a torque de-coupled pumping structure is simplified to complement the vacuuming activities of the exhaust function of a turbo molecular pump whereby rotor blades of the turbo are axially connected to the rotors of the pineapple pump. 
     
     
         11 . The pineapple pump according to  claim 10 , wherein the torque de-coupled pumping structure could be serially connected to have multiple stages in tandem, similar to the multi-stage structure of the turbo molecular pumping structure with multiple stages in tandem. 
     
     
         12 . The pineapple pump according to  claim 11 , wherein the tangential rotor speed spins at a linear velocity beyond the sonic molecular velocity of approximately  350  meters per second. 
     
     
         13 . The pineapple pump according to  claim 12 , wherein the torque de-coupled station discharges the exhaust fluid directly to the ambient without engaging the backing of roughing piston pump or scroll pump.