Electrocaloric heat transfer system

Patent metadata

Field	Value
Publication number	US-11874032-B2
Application number	US-201917057466-A
Country	US
Kind code	B2
Filing date	Aug 22, 2019
Priority date	Aug 24, 2018
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

A method of making an electrocaloric article is disclosed. The method includes mounting a supported electrocaloric film to a frame. The supported electrocaloric film includes an electrocaloric film and a first support film disposed on a first side of the electrocaloric film. An active area of the electrocaloric film is provided, which is not covered by the first support film on the first side of the electrocaloric film. Electrical connections are provided to electrodes disposed on opposing sides of the electrocaloric film in the active area.

First claim

What is claimed is:

1. A method of making an electrocaloric article, comprising
mounting a supported electrocaloric film to a frame, said supported electrocaloric film comprising an electrocaloric film and a first support film disposed on a first side of the electrocaloric film;
providing an active area of the electrocaloric film not covered by the first support film on the first side of the electrocaloric film;
providing electrical connections to electrodes disposed on opposing sides of the electrocaloric film in the active area;
wherein providing the active area of the electrocaloric film includes removing the first support film from the active area of the electrocaloric film.

2. The method of claim 1 , further comprising removing the first support film from the electrocaloric film outside of the active area.

3. The method of claim 1 , wherein the first support film is left in place at a peripheral portion of the electrocaloric film after attachment to the frame.

4. The method of claim 1 , comprising disposing a first of said electrodes on a surface of the first support film, disposing said surface of the first support film on the active area of the electrocaloric film, transferring the first electrode from the first support to the active area of the electrocaloric film, and removing the first support film from the active area of the electrocaloric film.

5. The method of claim 1 , wherein providing the active area of the electrocaloric film comprises disposing the first support film on a portion of the electrocaloric film outside of the active area without disposing the first support film on the active area of the electrocaloric film.

6. The method of claim 1 , further comprising removing the entirety of the first support film from the electrocaloric film after or as part of attachment of the supported electrocaloric film to the frame.

7. The method of claim 1 , wherein the supported electrocaloric film further comprises a second support film on a second side of the electrocaloric film, and the method comprises providing the active area of the electrocaloric film not covered by the second support film on the second side of the electrocaloric film.

8. The method of claim 7 , wherein providing the active area of the electrocaloric film includes removing the second support film from the active area of the electrocaloric film.

9. The method of claim 7 , further comprising removing the second support film from the electrocaloric film outside of the active area.

10. The method of claim 7 , wherein the second support film is left in place at a peripheral portion of the electrocaloric film after attachment to the frame.

11. The method of claim 7 , comprising disposing a second of said electrodes on a surface of the second support film, disposing said surface of the second support film on the active area of the electrocaloric film, transferring the second electrode from the second support to the active area of the electrocaloric film, and removing the second support film from the active area of the electrocaloric film.

12. The method of claim 7 , wherein providing the active area of the electrocaloric film comprises disposing the second support film on a portion of the electrocaloric film outside of the active area without disposing the second support film on the active area of the electrocaloric film.

13. The method of claim 7 , further comprising removing the entirety of the second support film from the electrocaloric film after or as part of attachment of the supported electrocaloric film to the frame.

14. The method of claim 7 , comprising removal of a portion of the second support film along a line of perforation of the second support film.

15. A method of making a heat transfer system, comprising
arranging one or more electrocaloric articles prepared according to the method of claim 1 as a stack of electrocaloric film segments with a working fluid flow path through the stack between adjacent electrocaloric film segments, said working fluid flow path in operative thermal communication with a heat sink and a heat source at opposite ends of the working fluid flow path;
connecting the electrodes to a power source configured to selectively apply voltage to activate the electrodes in coordination with fluid flow along the working fluid flow path to transfer heat from the heat source to the heat sink.

16. A method of making an electrocaloric article, comprising:
mounting a supported electrocaloric film to a frame, said supported electrocaloric film comprising an electrocaloric film and a first support film disposed on a first side of the electrocaloric film;
providing an active area of the electrocaloric film not covered by the first support film on the first side of the electrocaloric film;
providing electrical connections to electrodes disposed on opposing sides of the electrocaloric film in the active area; and
removing a portion of the first support film along a line of perforation of the first support film.

Assignees

• Carrier Corp

Inventors

• Eastman Scott Alan
• Schmidt Wayde R
• Culp Slade R
• Xie Wei
• Dardona Sameh
• Annapragada Subramanyaravi
• Mantese Joseph V
• Walker Craig R

Classifications

• F25B21/00 Primary

  Machines, plants or systems, using electric or magnetic effects · CPC title

• H10N15/10

  Thermoelectric devices using thermal change of the dielectric constant, e.g. working above and below the Curie point · CPC title

• F25B2321/001

  by using electro-caloric effects · CPC title

• Y02B30/00

  Energy efficient heating, ventilation or air conditioning [HVAC] · CPC title