US 2015/0090428 A1Published application

Heat transfer device having 3-dimensional projections and an associated method of fabrication

AssigneeGeneral Electric Company

InventorsShakti Singh Chauhan, Joo Han Kim, William Harold King, Pramod Chamarthy, Tao Deng

Life of this patent

Estimating the term…

Loading patent…

Abstract

A heat transfer device filled with a working fluid, includes a casing and a wick disposed within the casing. The wick includes a first sintered layer, a second sintered layer, and a third sintered layer. The first sintered layer is disposed proximate to an inner surface of the casing and the second sintered layer is disposed on the first sintered layer. The second sintered layer includes a first set of 3-dimensional sintered projections and a second set of 3-dimensional sintered projections disposed along a portion of the wick. Further, the third sintered layer is disposed on at least a portion of the second sintered layer. The heat transfer device includes at least one first sintered particle of the first sintered layer, which is smaller in size than at least one second pore of the second sintered layer.

Claims27

Dependent claims

A heat transfer device comprising:

a casing having an inner surface and an outer surface;
and
a wick disposed within the casing, wherein the wick comprises:
a first sintered layer comprising a plurality of first sintered particles, having a first porosity and a plurality of first pores, disposed proximate to the inner surface of the casing;
a second sintered layer comprising a plurality of second sintered particles, having a second porosity and a plurality of second pores, disposed on the first sintered layer, and at least one set of a first set of 3-dimensional sintered projections and a second set of 3-dimensional sintered projections disposed along a portion of the wick, wherein at least one first sintered particle is smaller than at least one second pore, the first porosity is smaller than the second porosity;
and
a third sintered layer including a plurality of third sintered particles, having a plurality of third pores and a third porosity smaller than the second porosity, disposed on at least a portion of the second sintered layer.

4 more elements

A method comprising:

forming a first wick portion having a first sintered layer portion, a second sintered layer portion, and a third sintered layer portion, within a first half casing portion;
forming a second wick portion having another first sintered layer portion, another second sintered layer portion, and another third sintered layer portion, within a second half casing portion;
and
coupling the first half casing portion to the second half casing portion such that the first wick portion is coupled to the second wick portion to form a heat transfer device;
wherein each first sintered layer portion comprises a plurality of first sintered particles, having a first porosity and a plurality of first pores, each second sintered layer portion comprises a plurality of second sintered particles, having a plurality of second pores and a second porosity greater than the first porosity, at least one second sintered layer portion comprises a set of 3-dimensional sintered projections, and each third sintered layer portion comprises a plurality of third sintered particles, having a plurality of third pores and a third porosity, wherein at least one first sintered particle is smaller than at least one second pore.

2 more elements

Dependencies are inferred from the claim text.