Heat transfer devices and methods of cooling heat sources

Patent metadata

Field	Value
Publication number	US-11378340-B2
Application number	US-201816015018-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Jun 21, 2018
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

A heat transfer device includes a storage chamber, a coolant housed within the storage chamber, a cooling chamber, one or more heat transfer components, a fluid passage between the storage chamber and the cooling chamber, and a barrier element. The one or more heat transfer components facilitate heat transfer from a heat source outside of the cooling chamber to the cooling chamber. The barrier element may have (i) a closed configuration, and (ii) an open configuration in which the barrier element is configured to allow the coolant in the storage chamber to flow from the storage chamber into the cooling chamber. The barrier element may reconfigure from the closed configuration to the open configuration in response to a trigger condition, such as the coolant housed within the storage chamber reaching a trigger temperature and/or the initial pressure of the coolant housed within the storage chamber reaching a trigger pressure.

First claim

The invention claimed is:

1. A heat transfer device, comprising:
a storage chamber;
a coolant housed within the storage chamber at an initial pressure;
a cooling chamber adjacent to the storage chamber;
one or more heat transfer components positioned and configured to facilitate heat transfer from a heat source to the cooling chamber, wherein the heat source is distinct from the cooling chamber;
a fluid passage between the storage chamber and the cooling chamber; and
a barrier element having:
(i) a closed configuration in which the barrier element is configured to restrict the coolant from flowing from the storage chamber through the fluid passage and into the cooling chamber; and
(ii) an open configuration in which the barrier element is configured to permit the coolant in the storage chamber to flow from the storage chamber through the fluid passage and into the cooling chamber, wherein the barrier element is configured to passively reconfigure from the closed configuration to the open configuration in response to a trigger condition, in which the coolant housed within the storage chamber reaches a trigger temperature or a trigger pressure;

wherein the coolant housed within the storage chamber is in a liquid state, and the fluid passage is configured to cause the coolant to transition from the liquid state to a gaseous state.

2. The heat transfer device of claim 1 , wherein the fluid passage is configured to expand the coolant from the initial pressure to an expanded pressure as the coolant flows from the storage chamber through the fluid passage and to the cooling chamber responsive to the barrier element reconfiguring from the closed configuration to the open configuration.

3. The heat transfer device of claim 2 , wherein the fluid passage comprises an expansion valve coupled to the storage chamber and the cooling chamber such that the coolant flows from the storage chamber and into the expansion valve at the initial pressure, and flows out of the expansion valve toward the cooling chamber at the expanded pressure, wherein the initial pressure is greater than the expanded pressure.

4. The heat transfer device of claim 1 , further comprising:
an additional storage chamber;
additional coolant housed within the additional storage chamber;
an additional fluid passage between the additional storage chamber and the cooling chamber; and
an additional barrier element having (i) a closed configuration in which the additional barrier element is configured to restrict the additional coolant from flowing from the additional storage chamber through the additional fluid passage and into the cooling chamber, and (ii) an open configuration in which the additional barrier element is configured to allow the additional coolant in the additional storage chamber to flow from the additional storage chamber through the additional fluid passage and into the cooling chamber.

5. The heat transfer device of claim 4 , wherein the additional barrier element is configured to reconfigure from the closed configuration to the open configuration in response to an additional trigger condition, and wherein the additional trigger condition is different from the trigger condition.

6. The heat transfer device of claim 1 , further comprising:
an additional storage chamber;
additional coolant housed within the additional storage chamber, wherein the fluid passage is further configured to allow coolant to flow between the additional storage chamber and the cooling chamber; and
an additional barrier element having (i) a closed configuration in which the additional barrier element is configured to restrict the additional coolant from flowing from the storage chamber through the fluid passage and into the cooling chamber, and (ii) an open configuration in which the additional barrier element is configured to allow the additional coolant in the additional storage chamber to flow from the additional storage chamber through the fluid passage and into the cooling chamber.

7. The heat transfer device of claim 1 , wherein a current pressure of the coolant in the storage chamber is a driving pressure that forces the coolant in the storage chamber to flow through the fluid passage and into the cooling chamber.

8. The heat transfer device of claim 1 , wherein the barrier element comprises a burst disc that is configured to rupture in response to at least one of:
at least one of the coolant, the barrier element, and the burst disc reaching the trigger temperature, and
a current pressure of the coolant in the storage chamber reaching the trigger pressure.

9. The heat transfer device of claim 1 , wherein the barrier element comprises a plunger that is configured to, when the trigger condition occurs, create a passage that the coolant can flow through.

10. The heat transfer device of claim 9 , wherein the barrier element comprises a burst disc, and wherein the plunger is configured to rupture the burst disc to create the passage.

11. The heat transfer device of claim 10 , wherein the barrier element further comprises a restraining element configured to restrain the plunger to maintain the barrier element in the closed configuration until occurrence of the trigger condition, and wherein the restraining element is configured to permit the plunger to rupture the burst disc responsive to the trigger condition.

12. The heat transfer device of claim 11 , wherein the restraining element comprises a material that melts at the trigger temperature.

13. The heat transfer device of claim 10 , wherein the barrier element further comprises an electrical circuit that has a sensor that is configured to detect the trigger condition, and wherein the electrical circuit is configured to cause the plunger to rupture the burst disc upon the sensor detecting the trigger condition.

14. The heat transfer device of claim 1 , wherein the barrier element comprises a membrane configured to: restrict the coolant from flowing across the membrane when a current pressure of the coolant in the storage chamber is below a threshold pressure; and allow the coolant to flow across the membrane when the current pressure of the coolant in the storage chamber is greater than or equal to the threshold pressure.

15. The heat transfer device of claim 1 , wherein the one or more heat transfer components define at least one coolant path for the coolant to flow within the cooling chamber.

16. The heat transfer device of claim 1 , wherein the cooling chamber further comprises multiple curved vanes that define multiple curved coolant flow paths extending radially outward from the fluid passage, and wherein the cooling chamber further comprises multiple exit interfaces through which the coolant is permitted to exit the multiple curved coolant flow paths.

17. The heat transfer device of claim 16 , wherein the cooling chamber further comprises a plurality of heat transfer components positioned within the multiple curved coolant flow paths.

18. The heat transfer device of claim 16 , wherein the multiple curved vanes comprise cutouts to allow the coolant to flow between the multiple curved coolant flow paths.

19. The heat transfer device of claim 16 , wherein the cooling chamber comprises a central distribution location, through which the coolant enters the multiple curved coolant flow paths, and wherein the multiple curved vanes extend radially outward from the central distribution location.

20. A heat transfer device, comprising:
a storage chamber;
a coolant housed within the storage chamber at an initial

Assignees

• Boeing Co

Inventors

• Bunch Ernest E
• Veto Christopher C
• Lucas James J
• Ek Garrett W
• Van Affelen Douglas H
• Stoia Michael F

Classifications

• F28F2250/10

  Particular pattern of flow of the heat exchange media · CPC title

• H05K7/20327 Primary

  Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds · CPC title

• F28C3/08 Primary

  with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) · CPC title

• H05K7/20281

  Thermal management, e.g. liquid flow control · CPC title

• F25B2400/12

  Inflammable refrigerants · CPC title