Three-dimensional diffuser-fin heat sink with integrated blower

Patent metadata

Field	Value
Publication number	US-11686536-B2
Application number	US-202117171389-A
Country	US
Kind code	B2
Filing date	Feb 9, 2021
Priority date	Feb 9, 2021
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A heat exchanger system is provided and includes a heat sink, fins arrayed on a central region of the heat sink to form channels between adjacent fins and an integrated blower. Each of the fins extends radially outwardly from the central region and has a height that increases with increasing distance from the central region. The integrated blower is disposed at the central region to generate flows of coolant directed into and through the channels.

First claim

What is claimed is:

1. A heat exchanger system, comprising:
a heat sink;
fins arrayed on a central region of the heat sink to form channels between adjacent fins, the fins being arranged in a spiraling formation and each of the fins extending radially outwardly from the central region and having a height that steadily increases with increasing distance from the central region;
an integrated blower disposed at the central region to generate flows of coolant directed into and through the channels; and
one or more baffles disposed to extend between adjacent fins, each baffle tapering to a narrow leading edge with decreasing distance toward the central region and bifurcating the corresponding one of the channels between the adjacent fins in a height-wise dimension of the fins.

2. The heat exchanger system according to claim 1 , further comprising a cover plate to enclose the channels.

3. The heat exchanger system according to claim 1 , wherein the integrated blower comprises a radial blower.

4. The heat exchanger system according to claim 1 , wherein the integrated blower has a height that is similar to or in excess of respective heights of the fins at the central region.

5. The heat exchanger system according to claim 4 , wherein the height of the integrated blower does not exceed a maximum height of any of the fins.

6. The heat exchanger system according to claim 4 , further comprising a motor packaged around an upper portion of the integrated blower to drive operations of the integrated blower.

7. The heat exchanger system according to claim 4 , wherein the integrated blower comprises an inlet which extends along a substantial height of the integrated blower.

8. The heat exchanger system according to claim 1 , wherein at least one or more of the fins and the one or more baffles comprise one or more surface features to thermally interact with the flows of the coolant.

9. A heat exchanger system, comprising:
a heat sink having a surface with a central region and a periphery;
fins arrayed on the surface to form channels between adjacent fins, the fins being arranged in a spiraling formation and each of the fins extending along the surface from the central region toward the periphery and having a height that is defined in a direction normal to the surface and steadily increases with increasing distance from the central region such that the channels extend along the surface from the central region toward the periphery and steadily increase in height from the surface with increasing distance from the central region; and
an integrated blower disposed at the central region to generate flows of coolant directed into and through the channels; and
one or more baffles disposed to extend between adjacent fins, each baffle tapering to a narrow leading edge with decreasing distance toward the central region and bifurcating the corresponding one of the channels between the adjacent fins in a height-wise dimension of the fins.

10. The heat exchanger system according to claim 9 , further comprising a cover plate to enclose the channels.

11. The heat exchanger system according to claim 9 , wherein the integrated blower comprises a radial blower.

12. The heat exchanger system according to claim 9 , wherein:
the integrated blower has a height that is similar to or in excess of respective heights of the fins at the central region, and the height of the integrated blower does not exceed a maximum height of any of the fins.

13. The heat exchanger system according to claim 12 , further comprising a motor packaged around an upper portion of the integrated blower to drive operations of the integrated blower.

14. The heat exchanger system according to claim 12 , wherein the integrated blower comprises an inlet which extends along a substantial height of the integrated blower.

15. The heat exchanger system according to claim 9 , wherein at least one or more of the fins and the one or more baffles comprise one or more surface features to thermally interact with the flows of the coolant.

16. The heat exchanger system according to claim 1 , wherein:
multiple baffles are disposed to extend between a pair of adjacent fins,
respective leading edges of the multiple baffles extend toward the central region, and
the leading edge of a higher one of the multiple baffles recedes further from the central region than the leading edge of a lower one of the multiple baffles.

17. The heat exchanger system according to claim 8 , wherein the one or more surface features of one of the fins are provided along an entirety of a length of the one of the fins.

18. A heat exchanger system, comprising:
a heat sink;
fins arrayed on a central region of the heat sink to form channels between adjacent fins, the fins being arranged in a spiraling formation and each of the fins extending radially outwardly from the central region and having a height that steadily and linearly increases with increasing distance from the central region;
an integrated blower disposed at the central region to generate flows of coolant directed into and through the channels; and
one or more baffles disposed to extend between adjacent fins, each baffle tapering to a narrow leading edge with decreasing distance toward the central region and bifurcating the corresponding one of the channels between the adjacent fins in a height-wise dimension of the fins.

Assignees

• Raytheon Tech Corp

Inventors

• Savlers Kimberly Rae
• Pearson Matthew Robert

Classifications

• H10W40/43

  by flowing gases, e.g. forced air cooling · CPC title

• F28F13/06

  by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} · CPC title

• H01L23/467

  Electricity · mapped topic

• F28F3/02 Primary

  Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations (F28F3/08 takes precedence) · CPC title

• F28F2215/08

  with openings, e.g. louvers · CPC title