Fluid routing devices and methods for cooling integrated circuit packages

Patent metadata

Field	Value
Publication number	US-10770372-B2
Application number	US-201615274335-A
Country	US
Kind code	B2
Filing date	Sep 23, 2016
Priority date	Sep 23, 2016
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A fluid routing device includes a fluid inlet, first vertical channels, a horizontal channel, a second vertical channel, and a fluid outlet. The first vertical channels are open to the fluid inlet. The horizontal channel is open to each of the first vertical channels. The first vertical channels are oriented to provide fluid coolant from the fluid inlet vertically down to the horizontal channel. The horizontal channel is open on one side such that fluid coolant in the horizontal channel directly contacts an apparatus attached to a bottom of the fluid routing device. The second vertical channel is open to the horizontal channel. The second vertical channel is oriented to provide fluid coolant vertically up away from the horizontal channel. The fluid outlet is open to the second vertical channel such that fluid coolant from the second vertical channel exits the fluid routing device through the fluid outlet.

First claim

What is claimed is:

1. A fluid routing device comprising:
a fluid inlet;
first vertical channels that are open to the fluid inlet;
a horizontal channel that is open to each of the first vertical channels, wherein the first vertical channels are oriented to provide fluid coolant from the fluid inlet vertically down to the horizontal channel, and wherein the horizontal channel is open on one side of the fluid routing device such that an apparatus attached to a bottom of the fluid routing device forms a sidewall of the horizontal channel;
second vertical channels that are open to the horizontal channel, wherein the second vertical channels are oriented to provide fluid coolant vertically up away from the horizontal channel, wherein the first vertical channels are interleaved between the second vertical channels, and wherein each of the first vertical channels and each of the second vertical channels is directly connected at one end to the horizontal channel; and
a fluid outlet that is open to the second vertical channels such that fluid coolant from the second vertical channels exits the fluid routing device through the fluid outlet,
wherein each of the first vertical channels has a constricted opening to the horizontal channel directly above the horizontal channel, wherein a width of the constricted opening of each of the first vertical channels is narrower than a width of the first vertical channel above the constricted opening, and wherein an opening of each of the second vertical channels to the horizontal channel directly above the horizontal channel is wider than the constricted opening to the horizontal channel of each of the first vertical channels.

2. The fluid routing device of claim 1 , wherein the first vertical channels comprise at least four vertical channels, and wherein the second vertical channels comprise at least four vertical channels.

3. The fluid routing device of claim 1 , wherein each of the first and second vertical channels is rectangular in shape from a bottom up perspective of the fluid routing device.

4. The fluid routing device of claim 1 , wherein each of the first and second vertical channels is circular in shape from a bottom up perspective of the fluid routing device.

5. The fluid routing device of claim 1 , wherein each of the first vertical channels is circular in shape from a bottom up perspective of the fluid routing device.

6. The fluid routing device of claim 1 , wherein the first vertical channels comprise at least three vertical channels, and wherein the second vertical channels comprise at least three vertical channels.

7. The fluid routing device of claim 1 , wherein the first and second vertical channels are circular in shape and are arranged in multiple rows in the fluid routing device from a bottom up perspective of the fluid routing device.

8. The fluid routing device of claim 1 further comprising:
a groove in the bottom of the fluid routing device, wherein the groove surrounds the first and second vertical channels, and wherein the groove is sized to receive an O-ring in an apparatus attached to the bottom of the fluid routing device.

9. The fluid routing device of claim 1 further comprising:
an O-ring attached to the bottom of the fluid routing device, wherein the O-ring surrounds the first and second vertical channels, and wherein the O-ring is sized to fit into a groove in an apparatus attached to the bottom of the fluid routing device.

10. A fluidic cooling system comprising:
an integrated circuit package; and
a fluid routing device attached to the integrated circuit package, wherein the fluid routing device comprises:
first vertical channels,
a horizontal channel that opens to each of the first vertical channels, and
second vertical channels that are open to the horizontal channel, wherein the first vertical channels are interleaved between the second vertical channels, and wherein each of the first vertical channels and each of the second vertical channels is directly connected at one end to the horizontal channel,
wherein the first vertical channels are oriented to provide fluid coolant vertically down to the horizontal channel, wherein the horizontal channel is open on one side of the fluid routing device such that a surface of the integrated circuit package that is attached to a bottom of the fluid routing device forms a sidewall of the horizontal channel, and wherein the second vertical channels are oriented to provide fluid coolant vertically up away from the horizontal channel,
wherein each of the first vertical channels has a constricted opening to the horizontal channel directly above the horizontal channel, wherein a width of the constricted opening of each of the first vertical channels is narrower than a width of the first vertical channel above the constricted opening, and wherein an opening of each of the second vertical channels to the horizontal channel directly above the horizontal channel is wider than the constricted opening to the horizontal channel of each of the first vertical channels.

11. The fluidic cooling system of claim 10 , wherein the integrated circuit package comprises a heat spreader, wherein the fluid routing device is attached to the heat spreader, and wherein the horizontal channel is open on one side such that fluid coolant in the horizontal channel directly contacts a surface of the heat spreader.

12. The fluidic cooling system of claim 10 , wherein the integrated circuit package comprises an integrated circuit die.

13. The fluidic cooling system of claim 10 , wherein the fluid routing device comprises a groove in its bottom surface that surrounds the first and second vertical channels, and
wherein the integrated circuit package comprises an O-ring that is inside an entire length of the groove causing the fluid routing device to be connected to the integrated circuit package.

14. The fluidic cooling system of claim 10 , wherein the integrated circuit package comprises a groove in its top surface,
wherein the fluid routing device comprises an O-ring attached to its bottom surface that surrounds the first and second vertical channels, and wherein the O-ring is inside an entire length of the groove causing the fluid routing device to be connected to the integrated circuit package.

15. The fluidic cooling system of claim 10 , wherein the first vertical channels comprise at least three vertical channels, and wherein the second vertical channels comprise at least three vertical channels.

16. A method for cooling an integrated circuit package, the method comprising:
providing fluid coolant from a fluid inlet in a fluid routing device to first vertical channels in the fluid routing device;
providing the fluid coolant vertically down through the first vertical channels to a horizontal channel in the fluid routing device, wherein the horizontal channel is directly open to each of the first vertical channels such that the fluid coolant flows from the first vertical channels to the horizontal channel without passing through other channels in the fluid routing device, wherein each of the first vertical channels has a constricted opening to the horizontal channel directly above the horizontal channel, and wherein a width of the constricted opening of each of the first vertical channels is narrower than a width of the first vertical channel above the constricted opening;
providing the fluid coolant horizontally through the horizontal channel such that the fluid coolant in the horizontal channel directly contacts the integrated circuit package as the fluid coolant flows through the horizontal channel, wherein

Assignees

• Altera Corp

Inventors

• Gutala Ravi
• Rahman Arif
• Dasu Aravind
• Sarvey Thomas
• Kulkarni Devdatta

Classifications

• H10W72/877

  Bump connectors and die-attach connectors · CPC title

• H10W90/724

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H10W40/611

  Bolts or screws · CPC title

• H10W40/237

  attached to additional arrangements for cooling · CPC title

• H10W40/228

  the projecting parts being wire-shaped or pin-shaped · CPC title