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WO1988004399A1 - Structure flexible de transfert thermique et procede de production - Google Patents

Structure flexible de transfert thermique et procede de production Download PDF

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Publication number
WO1988004399A1
WO1988004399A1 PCT/JP1987/000963 JP8700963W WO8804399A1 WO 1988004399 A1 WO1988004399 A1 WO 1988004399A1 JP 8700963 W JP8700963 W JP 8700963W WO 8804399 A1 WO8804399 A1 WO 8804399A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
working fluid
flexible
heat transfer
transfer structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1987/000963
Other languages
English (en)
Japanese (ja)
Inventor
Takao Negishi
Hideyasu Okawara
Shozo Sugaya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP29521886A external-priority patent/JPH0721392B2/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of WO1988004399A1 publication Critical patent/WO1988004399A1/fr
Priority to KR1019880700966A priority Critical patent/KR890700796A/ko
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0241—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the tubes being flexible

Definitions

  • the present invention relates to a flexible heat transfer structure that can change its form relatively freely depending on the conditions in which it is used.
  • This heat pipe is functionally composed of an evaporator and a condenser.
  • a part of the contained liquid evaporates and becomes a working fluid gas.
  • heat is taken from outside around the evaporating section due to vaporization.
  • the condensing section the gas of the working fluid is cooled, condensed and returned to the liquid of the working fluid.
  • heat is released to the outside around the condensation section. Heat is transmitted by absorbing and releasing latent heat due to the phase change of the working fluid.
  • wick material such as a metal mesh or sintered metal is inserted inside the heat pipe to smoothly return the working fluid liquefied in the condensing section to the evaporating section.
  • wick material such as a metal mesh or sintered metal
  • metal materials have the advantage of high conductivity, but they are basically rigid. For this reason, some degree of deformation such as bending is possible, but the shape is almost fixed. In addition, bending cannot be performed, and the form of the container is fixed, so there is a natural restriction on workability and design. In addition, the large steam space is always required, so the volume must be large, which is often an obstacle when unnecessary.
  • the metal has a weight and flexibility, corrosion resistance, poor properties such as chemical resistance, the level of daily life, it is actual situation that not a Kanaka practical q
  • the present invention has excellent moldability, flexibility, and corrosion resistance, and is lightweight, and can be freely deformed to some extent according to the use condition. In addition, it has a small volume when not in use, is easy to handle, and has a flexible ripening structure that minimizes the bulge of the container as much as possible due to the increase in vapor pressure due to the vaporization of the working fluid during operation. Is provided.
  • the present invention relates to a mature transmission structure comprising a working fluid and a container for enclosing the working fluid, wherein the inside of the container is filled with the working fluid when not in operation, and the working fluid evaporates as the working fluid evaporates during operation.
  • the heat transfer structure is characterized in that the volume of the container increases and a steam space is formed.
  • the heat transfer mechanism of the heat transfer structure according to the present invention is basically the same as that of the heat pipe in the prior art.
  • the material of the container is required to be flexible and the material constituting the container is a polymer film and / or a sheet-like material composed of a composite film of a polymer material and an inorganic material. Is done. These materials are flexible, much lighter than metal materials, and have excellent corrosion and chemical resistance, making it possible to select working fluids that could not be used in metal containers. This makes it possible to select a wide range of optimal operating areas. .
  • the heat transfer structure constituted by such a flexible container can be bent, depending on the use condition. It can take a free form. If the sheet is thin, it can be used in a small space. That is, it is possible to secure the area of ripening and ripening without increasing the volume. If the film is in sheet form, it can be rolled up or folded and stored.
  • the present invention by mounting a material such as a fibrous material in the container, it is possible to more effectively exhibit the ripening function without impairing the flexibility. I found it. This is due to the fact that the material has a property of adsorbing or trapping a working fluid. By introducing these materials, the working fluid is smoothly evaporated and refluxed. The smooth movement of the working fluid also has the effect of reducing vibrations generated during evaporation. The reflux of the working fluid can also be achieved by forming a groove inside the container. This utilizes the capillary action of the grooves.
  • the liquid will boil.
  • the volume of a gas is extremely large compared to the volume of a boiling liquid.
  • the heat radiation in the condensing section is performed smoothly.However, if the heat of ripening greatly exceeds the heat of ripening, the container becomes large due to the flexibility of the container material. There is also a risk of swelling and bursting.
  • the internal pressure of the vessel should be adjusted to 1 atm or less. ⁇ By adjusting the pressure below the air pressure, the boiling point of the working fluid is lowered, Even if the liquid boils, the internal pressure of the container can be kept below 1 atm, preventing the container from being destroyed. Further, even when the temperature of the evaporating section is equal to or lower than the boiling point of the working fluid at the atmospheric pressure, the working fluid is vaporized and the ripening function can be exhibited.
  • the volume of the container is slightly increased as compared with the case where the inside is not depressurized, but the volume of the container is increased due to the vaporization of the working fluid, which is a feature of the present invention.
  • the degree of decompression it is necessary to overcome the atmospheric pressure greatly, so the amount of steam space by the working fluid is small, and the gas cannot be moved smoothly inside the container, and the heat transfer efficiency may decrease. .
  • the pressure inside the vessel is maintained at the vapor pressure of the working fluid gas according to the ambient temperature.
  • the characteristic is that the vaporization of the working fluid is accompanied by an increase in the vapor pressure, and the volume of the container will still increase.
  • the heat transfer structure according to the present invention is particularly effective for heat transfer around the human body because of its high flexibility.
  • the body temperature can be adjusted to a certain temperature by performing appropriate ripening without any discomfort from the human body. To prevent discomfort and wear due to ambient temperature.
  • the closed container referred to in the present invention is a container for containing a working fluid, a material having a property of adsorbing or capturing the working fluid, or a spacer, and is not limited to a cylindrical shape as long as it can be sealed, and may have any shape. You can return.
  • the shape of the container is a flat tube shape, two films are bonded by heat at both ends, and one film is folded and one end is firmly bonded at one end.
  • Any structure may be used as long as the transmission structure can easily fill or diffuse the working fluid when not in operation.
  • a structure such as a pipe or a hollow fiber may be used. That is, any type may be used as long as the vapor space increases with the vaporization of the working fluid.
  • the container is made into a sheet shape (flat), there is an advantage that a very thin and highly flexible one can be obtained.
  • grooves are formed in the inner wall of the closed container, for example, those having thin grooves arranged in the longitudinal direction of the closed container can easily disperse the working fluid when not in operation, and can also assist the circulation of the working fluid during operation.
  • the container applied to the present invention may be a container having a change in the longitudinal direction, that is, a container having a change in cross-sectional form or cross-sectional area.
  • the polymer film that is a constituent material of the closed container and / or the composite film of the polymer material and the inorganic material is a polymer material such as polyester, polyamide, polyolefin, etc., and is compatible with the gas barrier property and the working fluid. It is applicable as long as it has non-solubility in working fluid.
  • resin sheets of polyvinyl alcohol, polyester, polyamide and the like can be mentioned.
  • a gas barrier-compatible polymer film such as polyvinylidene chloride, polyvinyl alcohol, nylon, or ethylene-vinyl alcohol copolymer is used.
  • the polymer film and the polymer material can be used alone, but a composite sheet using two or more of these materials has desired sheet properties, that is, gas barrier property and thermal adhesive sealing property, or when used. Is preferable because it is easy to obtain a strength guarantee.
  • composite sheets such as high-strength polyester and laminates or coatings of resins such as polyolefins with good gas barrier properties and their combined use are considered to have excellent gas barrier properties, adhesiveness and durability. Applicable.
  • a composite sheet composed of polymer films having the above-mentioned preferable gas barrier properties specifically, a film having good gas barrier properties such as polyvinylidene chloride, polyvinyl alcohol, and polyacrylonitrile;
  • a polymer sheet excellent in both properties and adhesion for example, a composite sheet with an ethylene-vinyl alcohol copolymer or the like is preferably applied.
  • a sheet of ethylene-vinyl alcohol copolymer having good gas barrier properties may be laminated with easily adhesive polyethylene or the like.
  • a composite seed composed of a polymer material and an inorganic substance is obtained by coating or vapor-depositing a metal or ceramic such as Ai, ⁇ 2, and ⁇ iO2 on a sheet made of the polymer film, thereby obtaining a gas-barrier property.
  • a metal or ceramic such as Ai, ⁇ 2, and ⁇ iO2
  • it can be applied to a film having a good gas barrier property, but a polymer film having a slightly low gas barrier property can also be used.
  • Examples of such a polymer film include 6 nylon, polyvinyl chloride, high-density polyethylene, and polyethylene terephthalate sheet.
  • the composite sheet in addition to the composite such as a laminate of the polymer films, a sheet made of the polymer film and the coating of the metal or ceramic, or the vapor-deposited film is laminated. Such a combination is also included.
  • the composite sheet in the present invention includes both a plate and a film, but usually means a film.
  • the container is in the form of a pipe, jig: L-a, or hollow fiber
  • all of the composites described in the section on film-like materials can be handled.
  • an inorganic substance is mixed as granules or a filler, and formed into a pipe, a tube, or a hollow fiber.
  • Spun materials can also be used.
  • the working fluid referred to in the present invention is a medium that conveys ripening, and is selected from those that operate within a usable temperature range of the polymer film and the polymer material constituting the closed container.
  • Such a working fluid is a medium that causes a gas-liquid phase change, such as acetate aldehyde, isopentane, ethanethiol, isopropyl chloride, pentane, methyl formate, dimethyl ether, dichloromethane, dibromodifluoromethane. And mediums such as chlorobromide, tetramethylsilane, trichlorofluoromethane, trifluoroacetic anhydride, methyl trifluoroperoxide, t-butylamine, methyl iodide, and dimethyl sulfate. They can be operated in the temperature environment around the human body, which is particularly required for flexibility.
  • a gas-liquid phase change such as acetate aldehyde, isopentane, ethanethiol, isopropyl chloride, pentane, methyl formate, dimethyl ether, dichloromethane, dibromodifluoromethane.
  • any substance that has a gas-liquid phase change in the range of 20 to ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ such as methanol, acetate, ethanol, ethyl formate, and water, can be operated under reduced pressure at low temperatures. it can.
  • a mixed medium of the above medium and another medium such as carbon disulfide or water, acetone, ethanol, or formic acid, specifically, carbon disulfide acetate, carbon disulfide ethanol, and carbon disulfide.
  • Carbon sulfide / formic acid Carbon disulfide Ethyl formate, Carbon disulfide Methyl formate, Carbon disulfide Methyl acetate, Carbon disulfide, Cyclopentane, Carbon disulfide Bromyl, Carbon disulfide, Butyl alcohol, Carbon disulfide 2-propanol, carbon disulfide pentane, carbon disulfide nomethanoe Water, water pentane, acetone Z isopentane, acetone, cyclopentane, acetone Z isopentane, acetone / cyclopentane, acetate / pentane, ethanol Z isopentane, ethanol Z isopropyl chloride, ethanol lannocyclopentane, ethanol / Pentane, isopentane formate, isopropyl formate, isopropyl chloride, formic acid, isobutyl bromide, isopy
  • the temperature range of 20 to 45 ° C is a temperature range that can be experienced in the human living environment, and the structure that operates and transmits ripening in this temperature range is suitable for proper ripening from the human body. It is an important factor in maintaining and maintaining body temperature at a certain temperature. .
  • the relationship between the container and the working fluid may be such that the working fluid does not corrode the container material. For example, when isopentane is the working fluid, a container made of polyvinyl alcohol is desirable. There are many other combinations.
  • the fibrous material to be mounted inside the container is a fibrous structure such as a knitted or woven fabric, a nonwoven fabric, a special fiber such as microfine iron fiber or porous fiber, or a general fiber for clothing.
  • a fibrous structure such as a knitted or woven fabric, a nonwoven fabric, a special fiber such as microfine iron fiber or porous fiber, or a general fiber for clothing.
  • a nonwoven fabric having a good liquid holding capacity is particularly preferable.
  • the fiber material may be, for example, a synthetic fiber such as polyester, polyamide, or polyolefin.
  • the spacer as referred to in the present invention is a structure for forming a vapor space having a pressure of 1 atm or less of a working fluid in an airtight container, and is flexible but does not collapse due to external pressure of the container.
  • a liquid that can form a vapor space (space in a decompressed state) even when exposed to an external atmospheric pressure (1 atm) is selected.
  • the evaporation and movement of water occur smoothly, evoking vaporization and ripening.
  • Examples of the spacer according to the present invention include, for example, tubes, pipes, and the like of fluorine, silicon, polyester, polyamide, and polyolefin, and adsorb or capture a working fluid inside the container.
  • a material with properties can be substituted. For example, nonwoven fabrics, knits, nets made of synthetic fibers and the like, and furthermore, porous materials having chemical resistance such as PVDF can be applied.
  • the container of the present invention in which the inner surface is provided with a concavo-convex shape can also be applied as a spacer.
  • a working fluid is charged into the container. After that, using a vacuum pump from a specific part of the container, evacuate the gas inside the container and adjust it to ⁇ ⁇ atmospheric pressure or less, and when the internal pressure reaches an appropriate level, apply a method of sealing the specific part by fusion bonding etc. it can.
  • the specific part is the part that connects the device for keeping the pressure inside the container within ⁇ atmosphere, puts the liquid into the container, and then removes air.
  • the appropriate internal pressure is, for example, in the case of n-pentane, it boils at ⁇ ⁇ atmospheric pressure at 36, but to boil at 30 ° C, the pressure should be reduced to 0.17 atm. Since the outside air pressure ( ⁇ atmospheric pressure) is stronger, the container will be swollen and will not burst.
  • the method for using the flexible ripening element of the present invention utilizes the cooling action in the evaporating section or the heating action in the condensing section. It is a book.
  • One of the applications is not only the use of the heat transfer structure of the present invention alone, but also the combination of a filamentous heating element in the evaporating section, a planar heating section, a combined use of a heat storage agent, and a cooling agent in the condensation section. There is a usage method that is different.
  • the use of the present invention may be any as long as heat transfer is required. Examples thereof include textiles, seat vests, baths, pillows, helmets, kotatsu laying, hachimaki sofas, and vehicles. It is recommended to use it with a sheet, belt, body winding, cooling of electronic equipment, shoes, helmets, ice bags, gloves, dustproof clothes, hats, etc.
  • FIG. A nonwoven fabric 2 is inserted into a container 1 made of an ethylene-vinyl alcohol copolymer film, and a working fluid 3 is filled in the container and the nonwoven fabric.
  • the container is formed of a lightweight and flexible material, the shape can be changed relatively freely, and the human body can efficiently feel uncomfortable. It can absorb heat without any trouble, and can give the human body a feeling of being cool.
  • the volume occupied by the non-operating structure is very small compared to the conventional structure that transfers heat by the principle of circling. ing.
  • due to the non-woven fabric being introduced evaporation and reflux have become smoother.
  • Example 2 As the container material, and ethylene one vinyl alcohol copolymer rest, the Ramine Bok film polyethylene, as Matasupe mono-, polyester nonwoven fabric, as the working fluid, n- pentane (boiling point at ⁇ pressure 3 6 e C> After use, the inside of the vessel was depressurized until the internal pressure of the vessel reached 45 OmmHg, and then the vessel was sealed to prepare a heat transfer structure of the present invention.
  • FIG. 2, FIG. 2, and FIG. 3 are cross-sectional views showing an example of a container used in the ripening structure according to the present invention
  • FIG. 4 is a cross-sectional view of the ripening structure in the embodiment
  • FIG. 5 is an example of a cross-sectional view of a mature transmission structure in which a spacer has been inserted into the container.
  • Container material 2 Non-woven cloth 3: Working fluid

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Laminated Bodies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Structure flexible de transfert thermique dont la forme peut être modifiée relativement librement en fonction de l'utilisation. Plus particulièrement, la présente invention se rapporte à une structure flexible de transfert thermique se composant d'un fluide de travail et d'un récipient contenant le fluide de travail, caractérisée en ce que le récipient est rempli de fluide de travail lorsque la structure n'est pas en service, le récipient étant dilaté pour en accroître le volume à cause de la gazéification du fluide de travail et former un espace de vapeur à l'intérieur du récipient lorsque la structure est en service.
PCT/JP1987/000963 1986-12-11 1987-12-11 Structure flexible de transfert thermique et procede de production Ceased WO1988004399A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880700966A KR890700796A (ko) 1986-12-11 1988-08-11 유연한 열전달 구조체 및 그의 제조방법

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP29521986 1986-12-11
JP61/295219 1986-12-11
JP29521886A JPH0721392B2 (ja) 1986-12-11 1986-12-11 熱伝達素子
JP61/295218 1986-12-11

Publications (1)

Publication Number Publication Date
WO1988004399A1 true WO1988004399A1 (fr) 1988-06-16

Family

ID=26560167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1987/000963 Ceased WO1988004399A1 (fr) 1986-12-11 1987-12-11 Structure flexible de transfert thermique et procede de production

Country Status (3)

Country Link
EP (1) EP0306531A4 (fr)
KR (1) KR890700796A (fr)
WO (1) WO1988004399A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9220715B2 (en) 2010-11-08 2015-12-29 Omeros Corporation Treatment of addiction and impulse-control disorders using PDE7 inhibitors
US11207275B2 (en) 2010-11-08 2021-12-28 Omeros Corporation Treatment of addiction and impulse-control disorders using PDE7 inhibitors

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6868898B2 (en) 2003-03-26 2005-03-22 Intel Corporation Heat pipe having an inner retaining wall for wicking components
CN100412492C (zh) * 2004-11-29 2008-08-20 杨洪武 集成热管
GB201006620D0 (en) 2010-04-21 2010-06-02 Qinetiq Ltd Evaporative structures, particularly for body cooling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05328840A (ja) * 1992-06-02 1993-12-14 Mitsubishi Agricult Mach Co Ltd 挿し木苗の育成方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094357A (en) * 1976-04-09 1978-06-13 Kenneth C. McCord Heat transfer blanket
US4212347A (en) * 1978-12-20 1980-07-15 Thermacore, Inc. Unfurlable heat pipe
EP0059581A3 (fr) * 1981-03-04 1983-03-16 National Research Development Corporation Caloducs
EP0076081A3 (fr) * 1981-09-25 1983-08-17 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Caloducs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05328840A (ja) * 1992-06-02 1993-12-14 Mitsubishi Agricult Mach Co Ltd 挿し木苗の育成方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0306531A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9220715B2 (en) 2010-11-08 2015-12-29 Omeros Corporation Treatment of addiction and impulse-control disorders using PDE7 inhibitors
US11207275B2 (en) 2010-11-08 2021-12-28 Omeros Corporation Treatment of addiction and impulse-control disorders using PDE7 inhibitors
US11464785B2 (en) 2010-11-08 2022-10-11 Omeros Corporation Treatment of addiction and impulse-control disorders using PDE7 inhibitors

Also Published As

Publication number Publication date
KR890700796A (ko) 1989-04-27
EP0306531A1 (fr) 1989-03-15
EP0306531A4 (fr) 1989-04-12

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