Flexible heat exchanger

Inactive Publication Date: 2002-07-25
M T R E ADVANCED TECH
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, under general anesthesia, the natural physiological mechanisms which operate to maintain a body temperature may fail, and the problem becomes particularly acute in cases where exposed internal body organs come into contact with the ambient air which results in excessive heat loss.
This problem is further aggravated

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
  • Flexible heat exchanger
  • Flexible heat exchanger
  • Flexible heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Example

[0035] In accordance with the invention a heat exchanger in the form of a flexible sheet, which is highly effective in transferring a heat to or from a body, e.g. a living body, in order to control the body's temperature, is provided. The heat exchanger is made of a porous material having impermeable faces (to be referred to herein also as "skin") as well as sealed edges to define within it a liquid-tight space.

[0036] The porous material is preferably highly hydrophilic, i.e. may absorb up to 25 times it's weight in liquid, e.g. water, and is highly elastic (capable of 20%-40% elongation with moderate tension). These features confer softness and pliability to the heat exchanger which permit it, in use, to closely follow the body's contours. Further, being made from a stretchable material minimizes the number of different sizes of heat exchanger garments typically required to be held in stocks.

[0037] The heat exchanger provided has an effective heat transfer, it is easy to handle and...

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

The present invention relates to a heat exchanger which comprises a flexible sheet consisting of a porous material, such as polyvinyl alcohol, sandwiched between two liquid impermeable layers, the liquid impermeable layers defining between them and between fluid-tight edges, a liquid transfer space within said sheet and at least one liquid inlet and at least one liquid outlet for respective connection to a source and a drain of a heat transfer liquid, with a flow path defined between the liquid inlet and liquid outlet within said liquid transfer space. According to one embodiment, the heat exchanger is comprised of an internal PVA sheet sandwiched between two layers of adherent, film forming material. According to one preferred embodiment, the film forming material is silicon. The heat exchanger of the present invention is preferably formed into a garment for overlaying a substantial portion of a subject's body, for controlling its body temperature.

Description

[0001] The present invention relates to a heat exchanger.BACKGROUND OF THE INVENTION AND PRIOR ART[0002] Most heat exchangers hitherto known are used for controlling the temperature of a variety of elements found in manufacturing industry, the process industry, buildings, vehicles, agriculture, medical equipment etc. Heat exchangers are found in many different configurations, however, most are characterized by rigid constructions, typically metal made and having simple geometric shapes.[0003] One application of heat exchangers is during medical procedures, where a subject's body temperature has to be controlled. For example, during open heart surgery, the body temperature has to be controllably reduced to about 35.degree. C. and then at the end of the operation increased back to normal body temperature. Furthermore, under general anesthesia, the natural physiological mechanisms which operate to maintain a body temperature may fail, and the problem becomes particularly acute in cases...

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
IPC IPC(8): A61B17/115A61F7/00A61F7/02F28F7/00
CPCA61F7/02A61F2007/0002A61F2007/0054A61F2007/0231A61F2007/0288
Inventor KUSHNIR, IGALSASSOON, MICHAEL VICTOR
Owner M T R E ADVANCED TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap