Refrigeration devices including temperature-controlled container systems

Patent metadata

Field	Value
Publication number	US-9523522-B2
Application number	US-201514704107-A
Country	US
Kind code	B2
Filing date	May 5, 2015
Priority date	Nov 27, 2013
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

In some embodiments, a refrigeration device includes: walls substantially forming a liquid-impermeable container configured to hold phase change material internal to a refrigeration device; at least one active refrigeration unit including a set of evaporator coils positioned within an interior of the liquid-impermeable container; walls substantially forming a storage region; and a heat transfer system including a first group of vapor-impermeable structures with a hollow interior connected to form a condenser in thermal contact with the walls substantially forming a liquid-impermeable container, a second group of vapor-impermeable structures with a hollow interior connected to form an evaporator in thermal contact with the walls substantially forming a storage region, and a connector with a hollow interior affixed to both the condenser and the evaporator, the connector forming a liquid and vapor flow path between the hollow interior of the condenser and the hollow interior of the evaporator.

First claim

What is claimed is:

1. A refrigeration device, comprising:
one or more walls substantially forming a liquid-impermeable container, the liquid-impermeable container configured to hold phase change material internal to a refrigeration device;
at least one active refrigeration unit including a set of evaporator coils, the evaporator coils positioned within an interior of the liquid-impermeable container;
one or more walls substantially forming a storage region; and
a heat transfer system including a first group of vapor-impermeable structures with a hollow interior connected to form a condenser in thermal contact with the one or more walls substantially forming a liquid-impermeable container, a second group of vapor-impermeable structures with a hollow interior connected to form an evaporator in thermal contact with the one or more walls substantially forming a storage region, and a connector with a hollow interior affixed to both the condenser and the evaporator, the connector forming a liquid and vapor flow path between the hollow interior of the condenser and the hollow interior of the evaporator.

2. The refrigeration device of claim 1 , wherein the one or more walls substantially forming a liquid-impermeable container include a plurality of layers and the condenser is positioned adjacent to a surface of at least one of the plurality of layers.

3. The refrigeration device of claim 1 , wherein the one or more walls substantially forming the liquid-impermeable container include a plurality of layers wherein at least one of the one or more layers includes non-planar regions to form multiple sides of the liquid-impermeable container.

4. The refrigeration device of claim 1 , wherein the one or more walls substantially forming the storage region include a plurality of layers and the evaporator is positioned adjacent to a surface of at least one of the plurality of layers.

5. The refrigeration device of claim 1 , wherein the at least one active refrigeration unit including the set of evaporator coils comprises:
a first section of the set of evaporator coils positioned adjacent to an exterior surface of the one or more walls substantially forming the liquid-impermeable container;
a second section of the set of evaporator coils positioned within the interior of the liquid-impermeable container; and
a frame of a size and shape to enclose one or more containers for frozen phase change material, the frame in thermal contact with the first section of the set of evaporator coils.

6. The refrigeration device of claim 1 , wherein the first group of vapor-impermeable structures with the hollow interior connected to form the condenser are integral to at least one of the one or more walls of the liquid-impermeable container.

7. The refrigeration device of claim 1 , wherein the second group of vapor-impermeable structures with the hollow interior connected to form the evaporator are integral to at least one of the one or more walls of the liquid-impermeable container.

8. The refrigeration device of claim 1 , wherein the connector includes multiple conduits with a first end affixed to the evaporator and a second end affixed to the condenser, and wherein each conduit is positioned and configured to provide a bidirectional flow path for liquid and vapor between the interior of the evaporator and the interior of the condenser.

9. The refrigeration device of claim 1 , further comprising:
at least one valve connected to the connector, the valve positioned and configured to reversibly control size of the hollow interior of the connector.

10. The refrigeration device of claim 1 , further comprising:
at least one sensor positioned within the liquid-impermeable container between the one or more walls and the set of evaporator coils; and
a controller operably attached to the at least one active refrigeration unit and to the sensor.

11. The refrigeration device of claim 1 , further comprising:
a thermal control device connected to the connector, the thermal control device positioned and configured to reversibly control size of the hollow interior of the connector;
at least one sensor positioned within the liquid-impermeable container between the one or more walls and the set of evaporator coils; and
a controller operably attached to the thermal control device and to the sensor.

12. The refrigeration device of claim 1 , further comprising:
a frame affixed to an exterior surface of the one or more walls substantially forming the liquid-impermeable container at a position distal to the condenser, the frame of a size and shape to enclose one or more containers for frozen phase change material; and
at least one tensioner within the frame, the tensioner oriented to press the one or more containers against the one or more walls.

13. The refrigeration device of claim 1 , further comprising:
a power monitor operably attached to the controller.

14. The refrigeration device of claim 1 , further comprising:
a thermally-conductive wall integral to the liquid-impermeable container, the thermally-conductive wall including a region projecting beyond an edge of the liquid-impermeable container;
an enclosure affixed to the region of the thermally-conductive wall projecting beyond an edge of the liquid-impermeable container of the thermally-conductive wall, the enclosure including an insulating layer adjacent to the region of the thermally-conductive wall; and
a frame affixed within the enclosure, the frame of a size and shape to enclose one or more containers for frozen phase change material.

15. A refrigeration device, comprising:
one or more walls substantially forming a liquid-impermeable container, the container configured to hold phase change material internal to a refrigeration device, wherein the one or more walls integrally include a first group of vapor-impermeable structures with a hollow interior connected to form a condenser;
at least one active refrigeration unit including a set of evaporator coils, the evaporator coils positioned within an interior of the liquid-impermeable container;
one or more walls substantially forming a storage region and integrally including a second group of vapor-impermeable structures with a hollow interior connected to form a evaporator; and
a connector affixed to both the condenser and the evaporator, the connector forming a liquid and vapor flow path between the hollow interior of the condenser and the hollow interior of the evaporator, wherein the condenser, the evaporator and the connector form a heat transfer system integral to the refrigeration device.

16. The refrigeration device of claim 15 , wherein the one or more walls substantially forming a liquid-impermeable container include a plurality of layers and the condenser is positioned adjacent to a surface of at least one of the plurality of layers.

17. The refrigeration device of claim 15 , wherein the one or more walls substantially forming the liquid-impermeable container include a plurality of layers wherein at least one of the one or more layers includes non-planar regions to form multiple sides of the liquid-impermeable container.

18. The refrigeration device of claim 15 , wherein the first group of vapor-impermeable structures with the hollow interior connected to form the condenser form a branched structure.

19. The refrigeration device of claim 15 , wherein the first group of vapor-impermeable structures with the hollow interior connected to form the condenser are integral to at least one of the one or more walls of the liquid-impermeable container.

Assignees

• Tokitae Llc

Inventors

• Chou Fong-Li
• Eckhoff Philip A
• Fowler Lawrence Morgan
• Gates William
• Hu Jennifer Ezu
• Ishikawa Muriel Y
• Larusson Fridrik
• Liu Shieng
• Myhrvold Nathan P
• Pal Brian L
• Peterson Nels R
• Piech David Keith
• Vecchione Maurizio
• Wood Jr Lowell L
• Wood Victoria Y H
• Yager David J

Classifications

• F25B49/02

  for compression type machines, plants or systems · CPC title

• F25B39/028 Primary

  having distributing means · CPC title

• F25B2339/02

  Details of evaporators · CPC title

• F25D11/025

  using primary and secondary refrigeration systems · CPC title

• F25B49/00

  Arrangement or mounting of control or safety devices · CPC title