Semi-rigid heat transfer devices

• US 5,205,348 A
• Filed: 05/31/1991
• Issued: 04/27/1993
• Est. Priority Date: 05/31/1991
• Status: Expired due to Term

• Current Assignee: 3M Company
• Original Assignee: 3M Company
• Inventors: Headrick, Larry G., Maddox, Douglas E., Tousignant, Lew A.
• Primary Examiner(s): Rivell, John
• Assistant Examiner(s): LEO, LEONARD R
• Application Number:
  US07/708,341
• Time in Patent Office: 697 Days
• Field of Search: 165/46, 165/170, 165/169, 165/168
• US Class Current: 165/46
• CPC Class Codes: F28F 3/12 Elements constructed in the shape of a hollow panel, e.g. with channels F28D1/02, F28D1/03 take precedence
• CPC Class Codes: H01L 23/467 by flowing gases, e.g. air H01L23/473 takes precedence
• CPC Class Codes: H01L 23/473 by flowing liquids H01L23/4332, H01L23/4338 take precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

Semi-rigid heat transfer devices are provided for heating or cooling components, such as electrical components, wherein the heat transfer devices are sufficiently flexible to conform to the shapes of the components, but are sufficiently rigid to maintain its overall structual shape. Moreover, the heat transfer devices include at least a frame or support portion thereof and a layer of flexible film. The frame and film layer are advantageously heat sealable according to one aspect of the present invention. The degree of flexibility for a particular heat transfer device can be designed in accordance with the specific requirements of particular applications.

Claims

1. A heat transfer apparatus for placement proximate to an article to be thermally affected thereby, comprising:

a flexible frame including an outwardly facing perimetric surface; and

a flexible film sealingly bonded to said perimetric surface of said flexible frame, said flexible film providing an external major surface of the heat transfer apparatus for contacting the article to be thermally affected;

wherein said flexible frame is elastically deformable in at least one direction by a significant amount but is more rigid than said flexible film, and said flexible frame and said flexible film define a first fluid cavity for containing a quantity of heat transfer fluid for thermally affecting the temperature of the article by heat transfer through said flexible film.

2. The heat transfer apparatus of claim 1, further including access means for allowing the heat transfer fluid to flow between the interior and exterior of said first fluid cavity, said access means comprising a passage defined within said flexible frame and an adapter operatively connected with said flexible frame to be in fluidic communication with said passage.

3. A heat transfer apparatus for placement proximate to an article to be thermally affected thereby, comprising:

a support member of heat sealable thermoplastic material having a heat sealing surface, and

a first flexible film including a thermoplastic layer that is heat sealed to said heat sealing surface of said support member, said support member being more rigid than said flexible film, said flexible film providing an external major surface of the heat transfer apparatus for contacting the article to be thermally affected, and said flexible film and said support member together defining a first fluid cavity for containing a quantity of heat transfer fluid, wherein the temperature of the heat transfer fluid thermally affects the temperature of the article by heat transfer through said flexible film.

4. The heat transfer apparatus of claim 3, wherein said support member comprises a frame defining the perimetric edge of said heat transfer apparatus, and said heat sealing surface comprises a perimetric surface of said frame to which said flexible film is heat sealed.

5. The heat transfer apparatus of claim 4, further including a second flexible film including a thermoplastic layer that is heat sealed to a second perimetric heat sealing surface of said frame, said second flexible film defining with said first flexible film and said frame said first fluid cavity and providing a second major surface of said heat transfer apparatus.

6. The heat transfer apparatus of claim 5, further including a fluid inlet and outlet means for permitting heat transfer fluid to circulate through said first fluid cavity.

7. The heat transfer apparatus of claim 6, wherein said fluid inlet and outlet means comprises an inlet passage defined within said frame, a spaced outlet passage defined within said frame, an inlet adapter operatively connected to said inlet passage and for connection to a heat transfer fluid source, and an outlet adapter operatively connected to said outlet passage for connection to a drain.

8. The heat transfer apparatus of claim 7, wherein said frame includes a fluid directing means for guiding heat transfer fluid circulation through said first fluid cavity from said inlet passage to said outlet passage.

9. The heat transfer apparatus of claim 8, wherein said inlet and outlet passages are provided along a common edge portion of said frame and said fluid directing means comprises an extension portion extending from said common edge portion substantially to an opposite edge portion of said frame so as to divide said first cavity into a plurality of zones in fluidic communication, said first and second flexible films being heat sealed to said extension portion.

10. The heat transfer apparatus of claim 4, wherein said frame further includes a web interconnected with said perimetric heat sealing surface and recessed therefrom so as to define with said flexible film said first fluid cavity.

11. The heat transfer apparatus of claim 10, further including a second flexible film including a thermoplastic layer that is heat sealed to a second perimetric heat sealing surface of said frame, thereby providing a second major surface of said heat transfer apparatus and a second fluid cavity between said web and said second flexible film.

12. The heat transfer apparatus of claim 11, wherein at least one hole is provided through said web so that heat exchange fluid can pass between said first and second fluid cavities.

13. The heat transfer apparatus of claim 11, further including fluid inlet and outlet means for permitting fluid circulation through at least one of said first and second fluid cavities.

14. The heat transfer apparatus of claim 13, wherein said fluid inlet and outlet means comprises a first inlet passage defined within said frame opening to at least one of said first and second cavities from outside of said heat transfer apparatus and a first outlet passage distal from said first inlet passage opening from outside of said heat transfer apparatus to the one of said first and second fluid cavities into which said first inlet passage opens.

15. The heat transfer apparatus of claim 14, wherein at least one hole is provided through said web so that heat exchange fluid can circulate through both said first and second fluid cavities of said heat transfer apparatus.

16. A semi-rigid heat transfer apparatus for placement proximate to an article to be thermally affected thereby, comprising:

a flexible frame of heat sealable thermoplastic material including first and second outwardly facing perimetric surfaces;

a first flexible film including a thermoplastic layer that is heat sealed to said first perimetric surface of said support member, said first flexible film providing a first external major surface of the heat transfer apparatus for contacting the article to be thermally affected;

a second flexible film including a thermoplastic layer that is heat sealed to said second perimetric surface of said support member, said second flexible film providing a second external major surface of the heat transfer apparatus;

wherein said flexible frame is elastically deformable in at least one direction by a significant amount but is more rigid than said first and second flexible films, said flexible frame and at least one of said first and second flexible films define a first fluid cavity for containing a quantity of heat transfer fluid for thermally affecting the temperature of the article by heat transfer through one of said first and second flexible films.