IP Library Granted Patent US 7,417,858
Granted Patent B2
US 7,417,858 · App. 11/313,392 · Granted Aug 26, 2008

Cooling technique using multiple magnet array for magneto-hydrodynamic cooling of multiple integrated circuits

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Quick Facts
Patent No.
US 7,417,858
App. No.
11/313,392
Granted
Aug 26, 2008
Kind
B2
Abstract

A cooling apparatus uses a plurality of pipes to cool one or more integrated circuits disposed on a circuit board. The cooling apparatus uses an array of magnets to create magnetic fields across segments of the plurality of pipes. Electrical currents are induced across the magnetic fields. A flow of electrically conductive fluid in the plurality of pipes is dependent on and controllable by the magnetic fields and/or the electrical currents.

Claims (48)

1. A computer system, comprising:

a circuit board;

a plurality of integrated circuits disposed on the circuit board;

an array of magnets operatively disposed on the circuit board; and

a plurality of pipes operatively connected between the plurality of integrated circuits and the array of magnets,

wherein fluid flow in at least one of the plurality of pipes is dependent on at least one magnetic field generated by the array of magnets

wherein the at least one magnetic field is generated across first and second segments of the at least one pair of the pipes,

wherein the segments are formed of an electrically non-conductive material, and

wherein a fluid flow direction in the first segment is opposite to that in the second segment.

2. The computer system of claim 1 , further comprising:

a heat exchanger disposed on the circuit board and operatively connected to the array of magnets.

3. The computer system of claim 1 , further comprising:

a ferromagnetic metal piece arranged to at least partially shield at least one magnetic field generated by the array of magnets.

4. The computer system of claim 1 , further comprising

a first electrical conductor attached to a portion of the segment; and

a second electrical conductor attached to another portion of the segment,

wherein fluid flow within the segment is dependent on an electrical current induced between the first electrical conductor and the second electrical conductor.

5. The computer system of claim 1 , wherein the electrically non-conductive material is plastic.

6. The computer system of claim 1 , wherein the fluid flow is dependent on an electrical current induced across a portion of the at least one of the plurality of pipes.

7. The computer system of claim 6 , further comprising:

a temperature sensor arranged to measure a temperature at a location of one of the plurality of integrated circuits, wherein the induced electrical current is dependent on the temperature sensor.

8. The computer system of claim 1 , wherein fluid flow in each of the plurality of pipes is individually controllable.

9. The computer system of claim 1 , wherein the fluid is at least one of thermally and electrically conductive.

10. The computer system of claim 1 , wherein at least one of the plurality of pipes is arranged to carry fluid away from at least one of the integrated circuits dependent on the array of magnets, and wherein at least one other of the plurality of pipes is arranged to carry fluid toward the at least one of the integrated circuits dependent on the array of magnets.

11. A method of cooling a plurality of integrated circuits, comprising:

generating a plurality of magnetic fields using an array of magnets;

using a plurality of pipes to pass electrically and thermally conductive fluid across the plurality of magnetic fields; and

propagating the fluid using the plurality of pipes toward the plurality of integrated circuits dependent on the plurality of magnetic fields

wherein the at least one magnetic field is generated across first and second segments of the at least one pair of the pipes,

wherein the segments are formed of an electrically non-conductive material, and

wherein a fluid flow direction in the first segment is opposite to that in the second segment.

12. The method of claim 11 , further comprising: at least partially shielding the plurality of magnetic fields.

13. The method of claim 11 , further comprising: measuring a temperature at a location of one of the plurality of integrated circuits; and adjusting the propagating dependent on the measuring.

14. The method of claim 11 , further comprising:

inducing electrical currents across the plurality of magnetic fields, wherein the propagating is dependent on the electrical currents.

15. A cooling apparatus, comprising:

a plurality of magnets housed in a ferromagnetic metal piece;

a plurality of pipes operatively connected to the ferromagnetic metal piece,

wherein the plurality of pipes are operatively connected to a plurality of integrated circuits;

a heat exchanger arranged to dissipate heat from fluid carried in the plurality of pipes,

wherein flow of the fluid in the plurality of pipes is dependent on a plurality of magnetic fields generated by the plurality of magnets

wherein the at least one magnetic field is generated across first and second segments of the at least one pair of the pipes,

wherein the segments are formed of an electrically non-conductive material, and

wherein a fluid flow direction in the first segment is opposite to that in the second segment.

16. The cooling apparatus of claim 15 , wherein the flow of fluid is dependent on an electrical current induced across one of the plurality of magnetic fields.

17. The cooling apparatus of claim 15 , wherein the ferromagnetic metal piece is arranged to at least partially shield the plurality of magnetic fields.

18. The cooling apparatus of claim 15 , wherein the flow of fluid is dependent on a temperature at a location of at least one of the plurality of integrated circuits.

19. The cooling apparatus of claim 15 , wherein the flow of fluid in each of the plurality of pipes is individually controllable.

Assignments (2)
MERGER AND CHANGE OF NAME Recorded Dec 16, 2015
From: ORACLE USA, INC.; SUN MICROSYSTEMS, INC.; ORACLE AMERICA, INC.
To: ORACLE AMERICA, INC.
Reel/Frame 037303/0349 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2005
From: OUYANG, CHIEN
To: SUN MICROSYSTEMS, INC.
Reel/Frame 017398/0647 →