IP Library › Granted Patent US 10,692,798

Granted Patent B2

US 10,692,798 · App. 14/682,727 · Granted Jun 23, 2020

Multiple flow entrance heat sink

Inventors: Kaveh Azar (Quincy, MA); Bahman Tavassoli-Hojati (Norton, MA)

Assignee: Advanced Thermal Solutions, Inc.

H01L23/467 F28F3/02 H01L23/3672 H05K7/20 F28D2021/0029 F28F3/06 F28F2215/04 H01L21/4871 H01L21/4882 H01L2924/0002

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Quick Facts

Patent No.: US 10,692,798
App. No.: 14/682,727
Granted: Jun 23, 2020
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

Embodiments of the invention related to using the fin length of the heat sink extending from an entrance of the heat sink to an interior sectional wall as the heat transfer element to achieve high thermal performance. The sectional wall(s) of the heat sink function to isolate fluid flow communication between the heat sink sections of fin fields, thereby preventing a flow coupling between the fin fields.

Claims (48)

1. An apparatus comprising:

a base having a perimeter with a first base edge and an opposite second base edge;

a flow barrier extending from the base and comprising: opposite first and second barrier sides facing and spaced from the first and second base edges, respectively, a barrier length parallel to the first and second barrier sides, a barrier height perpendicular to the barrier length and to the base, and a relatively uniform barrier thickness between the first and second barrier sides and perpendicular to the barrier length and the barrier height;

a first fin field positioned between the first base edge and the first barrier side, the first fin field comprising a plurality of first fins extending from the base and each having a respective first fin length extending parallel to the base and a respective first fin thickness that is perpendicular to the first fin length and less than the barrier thickness, the first fins collectively providing:

a first fin sub-section that is positioned distal to the flow barrier, the first fin sub-section having a first fin sub-section height that is perpendicular to the first fin length and the first fin thickness and that is substantially equal to the barrier height; and

a second fin sub-section that is proximate to the flow barrier, the second fin sub-section having a second fin sub-section height that is perpendicular to the first fin length and the first fin thickness and that is less than the first fin sub-section height and the barrier height; and

a second fin field separated from the first fin field by the flow barrier and positioned between the second base edge and the second barrier side, the second fin field comprising a plurality of second fins extending from the base and each having a respective second fin length extending parallel to the base and a respective second fin thickness that is perpendicular to the second fin length and less than the barrier thickness,

wherein the flow barrier is configured and arranged to prevent a fluid flow mix across the first and second fin fields.

2. The apparatus of claim 1 , wherein the first flow barrier is formed as an integral part of the base.

3. The apparatus of claim 1 , wherein the flow barrier extends linearly across the base from a third base edge to an opposite fourth base edge.

4. The apparatus of claim 1 , wherein the first fins extend in length perpendicular to the barrier length and have first ends proximate to and physically spaced from the flow barrier by a gap.

5. The apparatus of claim 1 , wherein the flow barrier is centrally located between the first and second base edges.

6. The apparatus of claim 1 , wherein the second fin sub-section of the first fins extends lengthwise along substantially an entirety of the barrier length.

7. The apparatus of claim 1 , wherein the first fin field further comprises an external fin extending from the base and having a length parallel to the first fins, the external fin having a constant height over an entirety of the length of the external fin, the constant height of the external fin being substantially equal to the first fin sub-section height.

8. The apparatus of claim 1 , further comprising a cover plate oppositely disposed with respect to the base, the cover plate comprising a vertical fin extending from the cover plate and having a length parallel to the first fins, the vertical fin having a constant height over an entirety of the length thereof, the constant height of the vertical fin being substantially equal to the first fin sub-section height.

9. The apparatus of claim 1 , wherein the first fins extend in length perpendicular or oblique to the barrier length and have first ends proximate to and physically attached to the flow barrier.

10. The apparatus of claim 9 , wherein the second fins extend in length perpendicular or oblique to the barrier length and have second ends proximate to and physically attached to the flow barrier.

11. An apparatus comprising:

a base having a perimeter with a first base edge and an opposite second base edge;

a flow barrier extending from the base and comprising opposite first and second barrier sides facing and spaced from the first and second base edges, respectively, a barrier length parallel to the first and second barrier sides, a barrier height perpendicular to the barrier length and to the base, and a relatively uniform barrier thickness between the first and second barrier sides and perpendicular to the barrier length and the barrier height;

a third fin sub-section that is positioned distal to the flow barrier, the third fin sub-section having a third fin sub-section height that is perpendicular to the second fin length and the second fin thickness and that is substantially equal to the barrier height; and

a fourth fin sub-section that is proximate to the flow barrier, the fourth fin sub-section having a fourth fin sub-section height that is perpendicular to the second fin length and the second fin thickness and that is less than the third fin sub-section height and the barrier height

wherein the flow barrier is configured and arranged to prevent a fluid flow mix across the first and second fin fields.

12. The apparatus of claim 11 , wherein the first fins extend in length perpendicular or oblique to the barrier length.

13. An apparatus comprising:

a base having a perimeter with opposite first and second base edges and opposite third and fourth base edges; and

a first flow barrier extending from the base and comprising opposite first and second barrier sides facing and spaced from the first and second base edges, respectively, a first barrier length parallel to the first and second barrier sides, a first barrier height perpendicular to the first barrier length and to the base, and a relatively uniform first barrier thickness between the first and second barrier sides and perpendicular to the first barrier length and the first barrier height;

a second flow barrier extending from the base and comprising opposite third and fourth barrier sides facing and spaced from the opposite third and fourth base edges, respectively, a second barrier length parallel to the third and fourth barrier sides, a second barrier height perpendicular to the second barrier length and to the base, and a relatively uniform second barrier thickness between the first and second barrier ends and perpendicular to the second barrier length and the second barrier height, the second flow barrier perpendicularly intersecting the first flow barrier;

a first fin field positioned between the first base edge and the first barrier side, the first fin field comprising a plurality of first fins extending from the base and each having a respective first fin length extending parallel to the base and a respective first fin thickness that is perpendicular to the first fin length and less than the first barrier thickness, the first fins collectively providing

a first fin sub-section that is positioned distal to the first flow barrier, the first fin sub-section having a first fin sub-section height that is perpendicular to the first fin length and the first fin thickness and that is substantially equal to the first barrier height; and

a second fin sub-section that is proximate to the first flow barrier, the second fin sub-section having a second fin sub-section height that is perpendicular to the first fin length and the first fin thickness and that is less than the first fin sub-section height and the first barrier height; and

a second fin field separated from the first fin field by the first flow barrier and positioned between the second base edge and the second barrier side, the second fin field comprising a plurality of second fins extending from the base and each having a respective second fin length extending parallel to the base and a respective second fin thickness that is perpendicular to the second fin length and less than the first barrier thickness,

wherein the first and second flow barriers are configured and arranged to prevent a fluid flow mix across the first and second fin fields.

14. The apparatus of claim 13 , wherein the first and second flow barriers are formed as an integral part of the base.

15. The apparatus of claim 13 , wherein the second fins collectively provide:

a third fin sub-section that is positioned distal to the second flow barrier, the third fin sub-section having a third fin sub-section height that is perpendicular to the second fin length and the second fin thickness and that is substantially equal to the barrier height; and

a fourth fin sub-section that is proximate to the second flow barrier, the fourth fin sub-section having a fourth fin sub-section height that is perpendicular to the second fin length and the second fin thickness and that is less than the third fin sub-section height and the second barrier height.

16. The apparatus of claim 13 , wherein:

the first fins extend in length perpendicular or oblique to the first barrier length and have first ends proximate to and physically attached to the first flow barrier; and

the second fins extend in length perpendicular to the second barrier length and have second ends proximate to and physically attached to the second flow barrier.

17. The apparatus of claim 13 , wherein the first fins extend in length perpendicular to the first barrier length and have first ends proximate to and physically spaced from the first flow barrier by a gap.

18. The apparatus of claim 13 , wherein the first flow barrier is centrally located between the first and second base edges.

19. The apparatus of claim 13 , wherein the first fin field further comprises an external fin extending from the base and having a length parallel to the first fins, the external fin having a constant height over an entirety of the length of the external fin, the constant height of the external fin being substantially equal to the first fin sub-section height.

20. The apparatus of claim 13 , further comprising a cover plate oppositely disposed with respect to the base, the cover plate comprising a vertical fin extending from the cover plate and having a length parallel to the first fins, the vertical fin having a constant height over an entirety of the length thereof, the constant height of the vertical fin being substantially equal to the first fin sub-section height.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2020

From: AZAR, KAVEH; TAVASSOLI-HOJATI, BAHMAN

To: ADVANCED THERMAL SOLUTIONS, INC.

Reel/Frame 052674/0956 →

Continuity (2)

Provisional Application 61978129 · Apr 10, 2014

Related Publication 20150296662A1 · Oct 15, 2015

Cited By (1)

US 12,416,458