Temperature-stabilized storage systems with integral regulated cooling

• US 9,447,995 B2
• Filed: 12/06/2013
• Issued: 09/20/2016
• Est. Priority Date: 02/08/2010
• Status: Active Grant

• Current Assignee: Tokitae LLC (Intellectual Ventures LLC)
• Original Assignee: Tokitae LLC (Intellectual Ventures LLC)
• Inventors: Bloedow, Jonathan, Calderon, Ryan, Friend, Michael, Gasperino, David, Gates, William, Hyde, Roderick A., Jung, Edward K. Y., Liu, Shieng, Myhrvold, Nathan P., Pegram, Nathan John, Piech, David Keith, Stone, Shannon Weise, Tegreene, Clarence T., Whitmer, Charles, Wood, Lowell L. Jr., Yildirim, Ozgur Emek
• Primary Examiner(s): Jones, Melvin
• Application Number:
  US14/098,886
• Publication Number:
  US 20140150464A1
• Time in Patent Office: 1,019 Days
• Field of Search: 62/32, 62/33, 62/36.2, 62/37, 623/71, 624/572, 165/104.21, 165/104.27, 165/104.33
• US Class Current: 1/1
• CPC Class Codes: B65D 81/38 with thermal insulation vacuum bottles or the like A47J41/00 ; thermal insulation of domestic water storage heaters F24H1/182
• CPC Class Codes: F25B 21/02 using Peltier effect; using Nernst-Ettinghausen effect
• CPC Class Codes: F25B 21/04 reversible
• CPC Class Codes: F25B 23/006 boiling cooling systems
• CPC Class Codes: F25B 29/00 Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
• CPC Class Codes: F25D 11/003 Transport containers
• CPC Class Codes: F25D 11/006 with cold storage accumulators
• CPC Class Codes: F25D 3/005 combined with heat exchangers

Abstract

In some embodiments, a regulated thermal transfer device for a storage container includes: a phase change material unit, the phase change material unit including one or more walls surrounding a phase-change material region, and an aperture in the one or more walls; a heat pipe with a first end positioned within the phase change material unit, and a second end; a thermoelectric unit thermally connected to the second end of the heat pipe; a heat sink connected to the thermoelectric unit, and positioned to radiate heat away from the thermoelectric unit; and an electronic controller operably connected to the thermoelectric unit; wherein the regulated thermal transfer device is of a size and shape to be positioned so that the phase change material unit is within a storage region of a temperature-stabilized storage container, and the thermoelectric unit is positioned adjacent to an external surface of the temperature-stabilized storage container.

Claims

1. A regulated thermal transfer device for a storage container, comprising:

a phase change material unit, the phase change material unit including one or more walls surrounding a phase-change material region, and an aperture in the one or more walls;

a heat pipe with a first end positioned within the phase change material unit, and a second end traversing the aperture of the one or more walls of the phase change material unit;

a thermoelectric unit thermally connected to the second end of the heat pipe;

a heat sink connected to the thermoelectric unit, and positioned to radiate heat away from the thermoelectric unit; and

an electronic controller operably connected to the thermoelectric unit;

wherein the regulated thermal transfer device is of a size and shape to be positioned so that the phase change material unit is within a storage region of a temperature-stabilized storage container, and the thermoelectric unit is positioned adjacent to an external surface of the temperature-stabilized storage container.

2. The regulated thermal transfer device of claim 1, wherein the phase change material unit comprises:

a sealed container including a hydrocarbon-based phase-change material within an expanded graphite structure.

3. The regulated thermal transfer device of claim 1, wherein the phase change material unit comprises:

an aperture surrounding the heat pipe, and a seal connecting the aperture to the heat pipe.

4. The regulated thermal transfer device of claim 1, wherein the phase change material unit comprises:

an attachment region positioned to attach the phase change material unit to a surface of the storage region of the temperature-stabilized storage container.

5. The regulated thermal transfer device of claim 1, wherein the phase change material unit comprises:

a phase change material substantially filling a sealed interior region of the phase change material unit, the phase change material having a freeze temperature between about 0°

C. to about 2°

C.

6. The regulated thermal transfer device of claim 1, wherein the heat pipe comprises:

a plurality of thermal conduction structures positioned within the phase-change material unit and configured to transfer heat from the phase change material to the heat pipe.

7. The regulated thermal transfer device of claim 1, wherein the thermoelectric unit comprises:

a Peltier device.

8. The regulated thermal transfer device of claim 1, wherein the heat sink connected to the thermoelectric unit comprises:

a passive heat sink device.

9. The regulated thermal transfer device of claim 1, wherein the heat sink connected to the thermoelectric unit comprises:

an active heat sink device, the active heat sink device operably coupled to the controller.

10. The regulated thermal transfer device of claim 1, wherein the electronic controller comprises:

circuitry configured to control the thermoelectric unit in response to signals received from at least one temperature sensor.

11. The regulated thermal transfer device of claim 1, further comprising:

a temperature sensor attached to the phase change material unit; and

a connector between the temperature sensor and the electronic controller.

12. The regulated thermal transfer device of claim 1, further comprising:

a connector attached to the electronic controller, the connector configured to provide electricity to the regulated thermal transfer device from an external power source.

13. The regulated thermal transfer device of claim 1, further comprising:

a communications unit operably coupled to the electronic controller.

14. The regulated thermal transfer device of claim 1, further comprising:

a second phase change material unit including one or more walls surrounding a phase-change material region, and an aperture in the one or more walls;

a second heat pipe with a first end positioned within the second phase change material unit, and a second end thermally connected to the thermoelectric unit.

15. A temperature-stabilized storage container, comprising:

one or more sections of ultra-efficient insulation material substantially defining a temperature-stabilized storage container including a temperature-stabilized storage region with a single access aperture to the temperature-stabilized storage region;

a phase change material unit attached to an internal surface of the temperature-stabilized storage region;

a heat pipe with a first end positioned within the phase-change material unit, and a second end positioned adjacent to the single access aperture on an outer surface of the temperature-stabilized storage container;

a thermoelectric unit in contact with the second end of the heat pipe;

a heat sink connected to the thermoelectric unit and positioned to radiate heat away from the thermoelectric unit; and

an electronic controller connected to the thermoelectric unit.

16. The temperature-stabilized storage container of claim 15, wherein the one or more sections of ultra-efficient insulation material comprise:

a plurality of layers of multilayer insulation substantially surrounding the temperature-stabilized storage region; and

substantially evacuated space surrounding the plurality of layers of multilayer insulation.

17. The temperature-stabilized storage container of claim 16, wherein the substantially evacuated space has a pressure less than or equal to 5×

10<sup>−

4</sup> torr.

18. The temperature-stabilized storage container of claim 15, wherein the temperature-stabilized storage region is configured to be maintained at a temperature substantially between approximately 2 degrees Centigrade and approximately 8 degrees Centigrade.

19. The temperature-stabilized storage container of claim 15, wherein the phase change material unit comprises:

a sealed container including a hydrocarbon-based phase-change material within an expanded graphite structure.

20. The temperature-stabilized storage container of claim 15, wherein the phase change material unit comprises:

an aperture surrounding the heat pipe, and a seal connecting the aperture to the heat pipe.

21. The temperature-stabilized storage container of claim 15, wherein the phase change material unit comprises:

a phase change material substantially filling a sealed interior region of the phase change material unit, the phase change material having a freeze temperature between about 0°

C. and 2°

C.

22. The temperature-stabilized storage container of claim 15, wherein the thermoelectric unit comprises:

a Peltier device.

23. The temperature-stabilized storage container of claim 15, wherein the heat sink connected to the thermoelectric unit comprises:

a passive heat sink device.

24. The temperature-stabilized storage container of claim 15, wherein the heat sink connected to the thermoelectric unit comprises:

an active heat sink device, the active heat sink device operably coupled to the electronic controller.

25. The temperature-stabilized storage container of claim 15, wherein the electronic controller comprises:

circuitry configured to control the thermoelectric unit in response to signals received from at least one temperature sensor.

26. The temperature-stabilized storage container of claim 15, further comprising:

a temperature sensor positioned within the temperature-stabilized storage region; and

a connector between the temperature sensor and the electronic controller.

27. The temperature-stabilized storage container of claim 15, further comprising:

a second phase change material unit positioned within the temperature-stabilized storage region;

a second heat pipe with a first end positioned within the second phase-change material unit, and a second end positioned adjacent to the single access aperture, wherein the thermoelectric unit is in contact with the second end of the second heat pipe.

28. A temperature-stabilized storage container, comprising:

an outer wall substantially defining an outer surface of a storage container, the outer wall including an outer aperture in an upper region;

an inner wall substantially defining a temperature-stabilized storage region internal to the storage container, the inner wall including an inner aperture in an upper region;

a gap between the outer wall and the inner wall;

a conduit connecting the outer aperture to the inner aperture;

one or more sections of ultra-efficient insulation material within the gap;

a phase-change material unit attached to an internal surface of the temperature-stabilized storage region;

a heat pipe with a first end positioned within the phase-change material unit, and a second end positioned adjacent to the outer aperture;

a thermoelectric unit in contact with the second end of the heat pipe;

a heat sink unit connected to the thermoelectric unit and positioned to radiate heat away from the thermoelectric unit; and

an electronic controller connected to the thermoelectric unit.

29. The temperature-stabilized storage container of claim 28, wherein the at least one section of ultra-efficient insulation material within the gap comprises:

a plurality of layers of multilayer insulation substantially surrounding the thermally sealed storage region; and

substantially evacuated space surrounding the plurality of layers of multilayer insulation.

30. The temperature-stabilized storage container of claim 29, wherein the substantially evacuated space has a pressure less than or equal to 5×

10<sup>−

4</sup> torr.

31. The temperature-stabilized storage container of claim 28, wherein the temperature-stabilized storage region is configured to be maintained at a temperature substantially between approximately 2 degrees Centigrade and approximately 8 degrees Centigrade.

32. The temperature-stabilized storage container of claim 28, wherein the phase-change material unit comprises:

a sealed container including a hydrocarbon-based phase-change material within an expanded graphite structure.

33. The temperature-stabilized storage container of claim 28, wherein the phase-change material unit comprises:

a phase change material substantially filling a sealed interior region of the phase change material unit, the phase change material having a freeze temperature between about 0°

C. and 2°

C.

34. The temperature-stabilized storage container of claim 28, wherein the thermoelectric unit comprises:

a Peltier device.

35. The temperature-stabilized storage container of claim 28, wherein the heat sink comprises:

a passive heat sink device.

36. The temperature-stabilized storage container of claim 28, wherein the heat sink comprises:

an active heat sink device, the active heat sink device operably coupled to the electronic controller.

37. The temperature-stabilized storage container of claim 28, wherein the electronic controller comprises:

circuitry configured to control the thermoelectric unit.

38. The temperature-stabilized storage container of claim 28, further comprising:

a temperature sensor positioned within the temperature-stabilized storage region; and

a connector between the temperature sensor and the electronic controller.

39. The temperature-stabilized storage container of claim 28, further comprising:

a power unit attached to an external surface of the container, the power unit operably coupled to the electronic controller.

40. The temperature-stabilized storage container of claim 28, further comprising:

a connector attached to the electronic controller, the connector configured to provide electricity from an external power source.

41. The temperature-stabilized storage container of claim 28, further comprising:

a display unit affixed to an external surface of the container, the display unit operably coupled to the electronic controller.

42. The temperature-stabilized storage container of claim 28, further comprising:

a communications unit operably coupled to the electronic controller.

43. The temperature-stabilized storage container of claim 28, further comprising:

a second phase change material unit positioned within the temperature-stabilized storage region;

a second heat pipe with a first end positioned within the second phase-change material unit, and a second end positioned adjacent to the single access aperture, wherein the thermoelectric unit is in contact with the second end of the second heat pipe.