Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Standing wave thermoacoustic piezoelectric refrigerator

a thermoacoustic piezoelectric refrigerator and piezoelectric technology, applied in the field of refrigeration, can solve the problem of still required movement of the masses in the thermoacoustic refrigerator

Inactive Publication Date: 2011-10-20
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
View PDF12 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a refrigerator that uses standing waves to transfer heat from one end to the other using thermoacoustic energy. It includes a housing with a compressible fluid and a porous stack between hot and cold heat exchangers. The refrigerator uses a free piston mechanism to generate the standing waves, eliminating the need for sliding seal mechanisms. The technical effect of the invention is to efficiently perform refrigeration using thermoacoustic energy.

Problems solved by technology

However, the use of moving masses in the thermoacoustic refrigerators is still required in such thermoacoustic refrigerators.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Standing wave thermoacoustic piezoelectric refrigerator
  • Standing wave thermoacoustic piezoelectric refrigerator
  • Standing wave thermoacoustic piezoelectric refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014]Before describing in detail embodiments that are in accordance with the invention, it should be observed that the embodiments reside primarily in combinations of apparatus components related to a standing wave thermoacoustic piezoelectric refrigerator. Accordingly, the apparatus components have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

[0015]In this document, relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms “comprises,”“comprising,” or any other variatio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A standing wave thermoacoustic piezoelectric refrigerator is provided. The standing wave thermoacoustic piezoelectric refrigerator includes a housing, a porous stack, and a piezoelectric bimorph. The housing comprises a compressible fluid and has a first portion and a second portion. The porous stack is positioned between a hot heat exchanger and a cold heat exchanger within the housing, at an end of the first portion of the housing opposite to an end of the first portion having the porous stack and is capable of oscillating to generate acoustic energy upon receiving energy from an external energy source. The oscillation of the piezoelectric bimorph compresses and expands the compressible fluid within the housing. Whereby, the compressible fluid traverses between the first portion and the second portion through the porous stack to generate standing acoustic waves enabling the compressible fluid to transfer heat from the cold heat exchanger to the hot heat exchanger.

Description

FIELD OF THE INVENTION[0001]The invention generally relates to refrigeration, and more specifically, to a standing wave thermoacoustic piezoelectric refrigerator for refrigeration by utilizing standing acoustic waves.BACKGROUND OF THE INVENTION[0002]Thermoacoustic engines are commonly used as heat pumps or refrigerators, they utilize energy associated with thermoacoustic waves for refrigeration process.[0003]In existing technologies, usually thermoacoustic refrigerators utilize energy associated with the thermoacoustic waves to transfer heat from a lower temperature end to a higher temperature end. Such thermoacoustic refrigerators use transducers as acoustic drivers for utilizing the acoustic energy. Further, the thermoacoustic refrigerators use a hot heat exchanger and a cold heat exchanger. A porous structure may be configured between the hot heat exchanger and the cold heat exchanger. The porous structure is made up of one or more of metal foils, a metal mesh, a sheet of a foame...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F25B21/00F25B27/00F25B9/00
CPCF25B9/145F25B2309/1407F25B2309/1402
Inventor ALDRAIHEM, OSAMA J.
Owner KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com