Jerry E Beam

US Patent:

52834883, Feb 1, 1994

Filed:

Feb 22, 1993

Appl. No.:

8/020930

Inventors:

Rengasamy Ponnappan - Dayton OH
Jerry E. Beam - Beavercreek OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H02k 900

US Classification:

310 55

Abstract:

A rotor structure for an electrical generator, motor or the like is described which comprises a rotatable generally cylindrically shaped heat pipe defining an internal vapor chamber having an evaporator end and a condenser end, a plurality of radial fins regularly spaced on the periphery of the heat pipe, each fin defining an internal chamber communicating with and extending radially from the vapor chamber, a vaporizable liquid disposed within said heat pipe, and a heat exchanger in thermal contact with the condenser end of the heat pipe.

US Patent:

49294148, May 29, 1990

Filed:

Oct 24, 1988

Appl. No.:

7/261807

Inventors:

John F. Leonard - Beavercreek OH
Jerry E. Beam - Beavercreek OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

B22F 300

US Classification:

419 2

Abstract:

A new method for making a heat pipe wick and arteries includes drilling. Radial holes around the circumference of the heat pipe container at its ends and stringing monofilament polymer lines inside the container between corresponding holes. The container is rotated at a slow rate while a slurry of nickel powder mixed into a viscous binder of water, Polyox and Methocel is injected inside the container to cover the inside surface of the container and the lines. The rotational rate of the container is then increased to force the slurry to level out to an uniform depth set by the thickness of sleeves attached at each end of the container. Forced air is blown through the inside of the rotating pipe to dry the slurry and form a green wick. After stopping rotation of the pipe, it is then heated inside a sintering oven in a reducing atmosphere to disintegrate the binder and polymer lines and to leave a sintered metal wick having hollow longitudinal arteries.

US Patent:

46745653, Jun 23, 1987

Filed:

Jul 3, 1985

Appl. No.:

6/751399

Inventors:

Jerry E. Beam - Dayton OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

F28D 1500

US Classification:

16510426

Abstract:

A heat pipe with an improved wick design has an unheated section of greater wick wall thickness next to the evaporator section of the heat pipe and on the opposite side of the evaporator section from the condenser section. The greater wick wall thickness acts as a reservoir of liquid heat pipe working fluid to prevent dry out of the wick during pulsed high thermal energy transfer conditions and to eliminate the need to enforce quasisteady state heat input requirements during start-up operation.

US Patent:

48097713, Mar 7, 1989

Filed:

Apr 24, 1987

Appl. No.:

7/041956

Inventors:

Elliot B. Kennel - Dayton OH
Edward T. Mahefkey - Dayton OH
Jerry E. Beam - Beavercreek OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

F28D 1700

US Classification:

165 10

Abstract:

A thermal storage apparatus for use with space-based burst power supplies. Lithium hydride is encapsulated within spherical hollow capsules. Each capsule is made of a three layer hollow shell. The inner layer of each shell is molybdemum, the middle layer silicon carbide, and the outer layer molybedum. The lithium hydride occupies only about sixty percent of the interior volume of each capsule at ambient temperatures to allow for thermal expansion. The outer diameter of each capsule is 3 cm. The thickness of the layers is 0. 1 mm for the inner and outer layer, and 0. 3-0. 5 mm for the middle layer. The capsules are arranged in a packed array for use in heat storage. A heat transfer working fluid, such as lithium, sodium or potassium, transfers heat to and from the packed array.

US Patent:

48851299, Dec 5, 1989

Filed:

Oct 24, 1988

Appl. No.:

7/261809

Inventors:

John F. Leonard - Beavercreek OH
Jerry E. Beam - Beavercreek OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

B22F 500

US Classification:

419 2

Abstract:

A new method for making a sintered metal heat pipe wick is practiced by mixing nickel powder into a slurry with a viscous binder comprising water. Polyox and Methocel. The mixture is then injected inside a rotating stainless steel cylindrical heat pipe container, or pipe, to completely coat the inside surface of the pipe. The rotational rate of the pipe is then increased to force the slurry to level out to a uniform depth set by the thickness of sleeves attached at each end of the pipe. Forced air is then blown through the inside of the rotating pipe to dry the slurry and form a green wick. After stopping rotation of the pipe, it is then heated inside a sintering oven in a reducing atmosphere to disintegrate the binder and leave a sintered metal final composition of the wick. Thus produced wicks prevent "hot spots" because they have a more uniform thickness and are attached more evenly and securely than prior art heat pipe wicks to the inside walls of the heat pipe container.

US Patent:

56295731, May 13, 1997

Filed:

Oct 3, 1995

Appl. No.:

8/540603

Inventors:

Rengasamy Ponnappan - Centerville OH
Jerry E. Beam - Beavercreek OH
John E. Leland - Kettering OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H02K 900

US Classification:

310 64

Abstract:

A new system for removing heat energy from the rotor of a rotating electrical machine is disclosed. Rotating electrical machines include electric motors, electric generators and the like. The cooling system includes the prior art components of an integral heat pipe rotor shaft, that is, a hollow rotor shaft in which an inner cavity is filled with a suitable working fluid to make an integral heat pipe for removing heat from the rotor. The heat pipe includes an evaporator section inside the rotor and a condenser section extending outside the rotor and the electrical machine housing. The present invention adds a spray chamber surrounding the condenser section. The spray chamber is integrated with the electrical machine housing. Liquid coolant enters the spray chamber and is sprayed through nozzles onto the condenser section to remove the heat transferred from the rotor. The liquid coolant may be routed through a preheater before entering the spray chamber.