PUMP STRUCTURE WITH CONICAL SHAPED INLET PORTION

• US 3,575,525 A
• Filed: 11/18/1968
• Issued: 04/20/1971
• Est. Priority Date: 11/18/1968
• Status: Expired due to Term

• Current Assignee: Leonard J. Fox, Paul E. Kueser
• Original Assignee: Leonard J. Fox, Paul E. Kueser
• Inventors: Fox, Leonard J., Kueser, Paul E.
• Application Number:
  US04/776,509
• Time in Patent Office: 883 Days
• US Class Current: 415/200
• CPC Class Codes: F04D 1/14 Pumps raising fluids by centrifugal force within a conical rotary bowl with vertical axis
• CPC Class Codes: F04D 29/2238 Special flow patterns F04D11/005 takes precedence
• CPC Class Codes: F04D 7/065 for liquid metal

Abstract

A pump, particularly suitable for pumping liquid molten metals, comprising an elongated, tapered or cone-shaped rotor disposed coaxially in a housing structure having an inner space with a similar shape, and having inlet and outlet ends, the radii of the rotor and/or the inner space of the housing increasing in the direction of the outlet end, the rotor and housing forming a space therebetween for directing a flow of liquid therethrough.

Claims

1. A pump adapted to be vertically positioned comprising:

a housing structure having an inlet at the lower end and an outlet in the upper end, said housing having an inlet housing portion at said inlet end and extending toward said outlet end, said inlet housing portion having an inner surface defining a tapered solid figure traced about a vertical axis, and having an increasing radius in the direction of said outlet end, an outlet housing portion joined with said inlet housing portion and having a collecting volute structure with an open side joined to said inlet housing portion, a rotor disposed coaxially in said housing structure and adapted to be supported by a bearing means adjacent said housing structure, said rotor having an elongated portion defining a solid figure traced about said vertical axis, said rotor and said inlet housing portion defining an elongated annular space between them, said rotor including a centrifugal impeller disposed at the end of the rotor enclosed by said outlet housing portion, said impeller including an upper continuous wall portion extending radially outward from said elongated portion of said rotor and having a side facing said inlet housing end, and a plurality of circumferentially spaced vanes extending from said side of said upper portion toward said inlet end, said continuous upper wall portion and said vanes cooperating to induce flow away from said bearing means on rotation of said rotor, means for rotating said rotor, said rotor and housing being effective to direct a flow of liquid through said annular space at an increasing velocity in the direction of the increasing radius when said rotor is rotated.

2. The pump described in claim 1 in which the rotor is a solid, one-piece structure.

3. The pump described in claim 1 in which the housing and rotor are made from silicon carbide.

4. The pump claimed in claim 1 in which the inlet housing and elongated rotor portions define cone figures having increasing radii in the direction of the outlet end of the housing.