TWO-PHASE JET IMPINGEMENT COOLING DEVICES AND ELECTRONIC DEVICE ASSEMBLIES INCORPORATING THE SAME

• US 20170094837A1
• Filed: 09/30/2015
• Published: 03/30/2017
• Est. Priority Date: 09/30/2015
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Joshi, Shailesh N., Dede, Ercan M.
• Granted Patent: US 9,622,380 B1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05K 7/20327 Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
• CPC Class Codes: H05K 7/20345 Sprayers; Atomizers

Abstract

Two-phase jet impingement cooling devices and electronic device assemblies are disclosed. In one embodiment, a cooling device includes a manifold having a fluid inlet surface, a fluid outlet surface defining an outlet manifold, and a fluid outlet. The fluid inlet surface includes an inlet channel fluidly coupled to a first jet region and a second jet region each including a plurality of jet orifices and a plurality of surface features extending from the fluid inlet surface. A target plate is coupled to the fluid outlet surface of the manifold that includes a target surface, a first heat sink, and a second heat sink. A cover plate is coupled to the fluid inlet surface of the manifold, which includes a fluid inlet port fluidly coupled to the inlet channel of the manifold, and a fluid outlet port fluidly coupled to the fluid outlet of the manifold.

Claims

1. A cooling device comprising:

a manifold comprising a fluid inlet surface, a fluid outlet surface defining an outlet manifold, and a fluid outlet, wherein;

the fluid outlet surface is opposite the fluid inlet surface;

the fluid inlet surface comprises an inlet channel fluidly coupled to a first jet region and a second jet region;

the first jet region and the second jet region each comprise a plurality of jet orifices and a plurality of surface features extending from the fluid inlet surface;

an individual surface feature of the plurality of surface features is positioned adjacent an individual jet orifice of the plurality of jet orifices;

the first jet region and the second jet region are symmetrical about a line disposed in a center of the inlet channel; and

the fluid outlet is fluidly coupled to the outlet manifold;

a target plate coupled to the fluid outlet surface of the manifold, the target plate comprising a target surface, a first heat sink at the target surface, and a second heat sink at the target surface, wherein the first heat sink is aligned with the first jet region of the manifold, and the second heat sink is aligned with the second jet region; and

a cover plate coupled to the fluid inlet surface of the manifold, the cover plate comprising a fluid inlet port fluidly coupled to the inlet channel of the manifold, and a fluid outlet port fluidly coupled to the fluid outlet of the manifold.

2. The cooling device of claim 1, wherein each of the plurality of jet orifices of the first jet region and the plurality of jet orifices of the second jet region is arranged in an array.

3. The cooling device of claim 1, wherein the first heat sink is configured as a first array of pins and the second heat sink is configured as a second array of pins.

4. The cooling device of claim 1, wherein the fluid inlet port has a channel comprising a ninety degree turn.

5. The cooling device of claim 1, wherein:

the outlet manifold is defined by a plurality of walls;

the fluid outlet is disposed between a first wall and a second wall of the plurality of walls; and

the first wall and the second wall are angled outwardly away from a central region of the outlet manifold.

6. The cooling device of claim 1, wherein the first jet region and the second jet region are fluidly coupled to an end of the inlet channel.

7. The cooling device of claim 1, wherein the inlet channel comprises a ninety degree turn.

8. The cooling device of claim 1, wherein:

each of the first jet region and the second jet region is defined by a perimeter wall; and

the perimeter wall has a non-linear shape comprising a plurality of convex regions such that each convex region is adjacent to an individual jet orifice of the plurality of jet orifices.

9. The cooling device of claim 1, wherein the target surface, the first heat sink, and the second heat sink have a porous surface.

10. A cooling device comprising:

a manifold comprising a fluid inlet surface, a fluid outlet surface defining an outlet manifold, and a fluid outlet, wherein;

the fluid inlet surface comprises an inlet channel fluidly coupled to a jet region;

the jet region comprises a plurality of jet orifices and a plurality of surface features extending from the fluid inlet surface;

an individual surface feature of the plurality of surface features is positioned adjacent an individual jet orifice of the plurality of jet orifices; and

the fluid outlet is fluidly coupled to the outlet manifold;

a target plate coupled to the fluid outlet surface of the manifold, the target plate comprising a target surface and a heat sink at the target surface that is aligned with the jet region of the manifold, wherein the heat sink comprises one or more walls defining a central impingement region, and a plurality of channels extending through the one or more walls; and

a cover plate coupled to the fluid inlet surface of the manifold, the cover plate comprising a fluid inlet port fluidly coupled to the inlet channel of the manifold, and a fluid outlet port fluidly coupled to the fluid outlet of the manifold.

11. The cooling device of claim 10, wherein the plurality of channels of the heat sink is a plurality of bores extending through the one or more walls.

12. The cooling device of claim 10, wherein the plurality of channels of the heat sink is a plurality of open grooves through the one or more walls.

13. The cooling device of claim 10, wherein the target surface and the heat sink have a porous surface.

14. The cooling device of claim 10, wherein:

the jet region is defined by a perimeter wall; and

the perimeter wall has a non-linear shape comprising a plurality of convex regions, where each convex region is adjacent to an individual jet orifice of the plurality of jet orifices.

15. The cooling device of claim 10, wherein:

the fluid inlet surface further comprises an additional jet region, the additional jet region comprising an additional plurality of jet orifices and an additional plurality of surface features extending from the fluid inlet surface;

an individual surface feature of the additional plurality of surface features is positioned adjacent an individual jet orifice of the additional plurality of jet orifices;

the jet region and the additional jet region are symmetrical about a line disposed in a center of the inlet channel; and

the target plate comprises an additional heat sink at the target surface, the additional heat sink comprising an additional one or more walls defining an additional central impingement region, and an additional plurality of channels through the additional one or more walls.

16. The cooling device of claim 15, wherein the jet region and the additional jet region are fluidly coupled to an end of the inlet channel.

17. The cooling device of claim 15, wherein the inlet channel comprises a ninety degree turn.

18. An electronic device assembly comprising:

a manifold comprising a fluid inlet surface, a fluid outlet surface defining an outlet manifold, and a fluid outlet, wherein;

the fluid outlet surface is opposite the fluid inlet surface;

the fluid inlet surface comprises an inlet channel fluidly coupled to a first jet region and a second jet region;

the first jet region and the second jet region each comprise a plurality of jet orifices and a plurality of surface features extending from the fluid inlet surface;

an individual surface feature of the plurality of surface features is positioned adjacent an individual jet orifice of the plurality of jet orifices;

the first jet region and the second jet region are symmetrical about a line disposed in a center of the inlet channel; and

the fluid outlet is fluidly coupled to the outlet manifold;

a target plate coupled to the fluid outlet surface of the manifold, the target plate comprising a heat receiving surface, a target surface, a first heat sink at the target surface, and a second heat sink at the target surface, wherein the first heat sink is aligned with the first jet region of the manifold, and the second heat sink is aligned with the second jet region;

a cover plate coupled to the fluid inlet surface of the manifold, the cover plate comprising a fluid inlet port fluidly coupled to the inlet channel of the manifold, and a fluid outlet port fluidly coupled to the fluid outlet of the manifold; and

a first electronic device and a second electronic device, wherein the first electronic device and the second electronic device are thermally coupled to the heat receiving surface such that the first electronic device and the second electronic device are opposite the first heat sink and the second heat sink, respectively.

19. The electronic device assembly of claim 18, wherein:

each of the first jet region and the second jet region is defined by a perimeter wall; and

the perimeter wall has a non-linear shape comprising a plurality of convex regions such that each convex region is adjacent to an individual jet orifice of the plurality of jet orifices.

20. The electronic device assembly of claim 18, wherein the inlet channel comprises a ninety degree turn.