Fluid dynamic pump

• US 5,074,759 A
• Filed: 03/14/1990
• Issued: 12/24/1991
• Est. Priority Date: 03/14/1990
• Status: Expired due to Fees

• Current Assignee: Keith R. Cossairt
• Original Assignee: Keith R. Cossairt
• Inventors: Cossairt, Keith R.
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): Kocharov, Michael I.
• Application Number:
  US07/493,295
• Time in Patent Office: 650 Days
• Field of Search: 417/163, 417/170, 417/151, 417/182, 417/183, 417/197, 417/171, 417/198, 137/888, 137/896
• US Class Current: 417/198
• CPC Class Codes: F04F 5/464 with inversion of the direction of flow

Abstract

This invention relates generally to pumps, and more particularly, to a new concept in pumps where the principle of operation is based on the change in momentum of a curved, fluid jet curtain, with the pump itself containing no moving parts.

Claims

1. A pumping apparatus comprising:

a conduit having an entrance (24) for a pumped fluid and an exit (26) for said pumped fluid;

said conduit being formed by an outer shell (32) and

an inner shell (34) connected to said outer shell, said inner shell (34) defining said entrance (24);

two annular surfaces symmetrical about a center line of said conduit, said annular surfaces being linearly displaced in relationship to said center line, one of said annular surfaces (28) nearer said entrance forming an exhaust for a primary fluid, and the other said annular surface (30) being an intake for said primary fluid;

a throat (36) attached to said outer shell (32) forming a portion of said conduit and defining on one end thereof said exit (26) and on the other end thereof said other annular surface (30);

said end of said throat defining said other annular surface (30) being spaced from said inner shell (34) to define a primary exhaust orifice (37) of thickness "t";

said outer shell (32) defining between said inner shell and said throat a plenum (38) for said primary fluid so that said primary fluid can be forced through said primary exhaust orifice (37);

said throat curving radially outwardly opposite the direction of pumped fluid flow;

said inner shell (34) having an interior surface having a radially outward curvature followed by a radially inward curvature followed by a curvature in the axial direction of pumped fluid and forming said one annular surface (28) at its termination whereby exhausting of said primary fluid at said one annular surface and intaking of said primary fluid at said other annular surface cause said pumped fluid to move from said entrance toward said exit.

2. The apparatus according to claim 1 further including a supply tube in communication with said plenum.

3. A process for pumping a fluid media comprising steps of:

providing;

a conduit having an entrance (24) for a pumped fluid and an exit (26) for said pumped fluid;

said conduit being formed by an outer shell (32) and

an inner shell (34) connected to said outer shell, said inner shell (34) defining said entrance (24);

two annular surfaces symmetrically about a center line of said conduit, said annular surfaces being linearly displaced in relationship to said center line, one of said annular surfaces (28) nearer said entrance forming an exhaust for a primary fluid, and the other said annular surface (30) being an intake for said primary fluid;

a throat (36) attached to said outer shell (32) forming a portion of said conduit and defining on one end thereof said exit (26) and on the other end thereof said other annular surface (30);

said end of said throat defining said other annular surface (30) being spaced from said inner shell (34) to define a primary exhaust orifice (37) of thickness "t";

said outer shell (32) defining between said inner shell and said throat a plenum (38) for said primary fluid so that said primary fluid can be forced through said primary exhaust orifice (37);

said throat curving radially outwardly opposite the direction of pumped fluid flow;

said inner shell (34) having an interior surface having a radially outward curvature followed by a radially inward curvature followed by a curvature in the axial direction of pumped fluid and forming said one annular surface (28) at its termination;

forcing a primary fluid medium from said primary exhaust orifice (37), said primary fluid medium passing over said one annular surface (28) to affect a change of momentum of said primary fluid thereby causing the drawing in of a said pumped fluid into said entrance and forcing said pumped fluid toward said exit.