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Electrocaloric effect heat transfer device dimensional stress control

An electrocaloric effect, heat transfer technology, used in machines, refrigerators, refrigeration, and liquefaction that use electrical/magnetic effects, and can solve reliability problems, peeling, etc.

Inactive Publication Date: 2014-05-21
EMPIRE TECH DEV LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cyclic peel stress can cause peeling from adjacent material layers, potentially causing reliability issues

Method used

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  • Electrocaloric effect heat transfer device dimensional stress control
  • Electrocaloric effect heat transfer device dimensional stress control
  • Electrocaloric effect heat transfer device dimensional stress control

Examples

Experimental program
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Embodiment Construction

[0024] In the following detailed description, reference is made to the accompanying drawings which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It is to be readily understood that the various aspects of the disclosure as generally described herein and illustrated in the drawings may be arranged, substituted, combined, separated and designed in various configurations, all of which are expressly contemplated herein.

[0025] The present disclosure generally focuses specifically on electrocaloric effect heat transfer techniques that control mechanical stresses caused by dimensional changes in layers of electrocaloric effect material duri...

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PUM

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Abstract

Technologies are generally described herein for electrocaloric effect heat transfer devices and methods effective to facilitate thermal energy transfer while mitigating mechanical stresses caused by expansion or contraction of electrocaloric effect material layers during thermal energy transfer operations. Some example heat transfer devices may include heat transfer stacks with at least two electrocaloric effect materials. Expanding electrocaloric effect material and contracting electrocaloric effect material are utilized to cancel the aggregate longitudinal dimensional change during application of an electric field. Some example heat transfer devices may utilize segmented electrocaloric effect material layers with stress relief gaps separating segments to mitigate delamination stress caused by lateral expansion or contraction of the electrocaloric effect material.

Description

[0001] Cross References to Related Applications [0002] This application is related to co-pending application Serial No. PCT / US2010 / 039200, filed June 18, 2010, entitled "Electrocaloric Effect Materials and Thermal Diodes," filed December 17, 2010 The corresponding U.S. national phase application serial number 12 / 999,684 titled "Electrocaloric Effect Materials and Thermal Diodes" and the title "Heterogeneous Electrocaloric Effect Heat Transfer Device" filed on April 20, 2011 Heterogeneous Electrocaloric Effect Heat Transfer Device), each of which is hereby incorporated herein by reference in its entirety. Background technique [0003] Unless otherwise indicated herein, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section. [0004] Electrocaloric effect materials are materials that are capable of undergoing a temperature change when subjected to an applied electric field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/00
CPCF25B21/00F25B2321/001Y02B30/00
Inventor E·克鲁格里克
Owner EMPIRE TECH DEV LLC