WO2005116546A1 - Systeme de refroidissement pour refroidir des surfaces - Google Patents

Systeme de refroidissement pour refroidir des surfaces Download PDF

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Publication number
WO2005116546A1
WO2005116546A1 PCT/EP2005/004163 EP2005004163W WO2005116546A1 WO 2005116546 A1 WO2005116546 A1 WO 2005116546A1 EP 2005004163 W EP2005004163 W EP 2005004163W WO 2005116546 A1 WO2005116546 A1 WO 2005116546A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling
cooling device
water
outer layer
hydrogel
Prior art date
Application number
PCT/EP2005/004163
Other languages
German (de)
English (en)
Inventor
Jörg Bennecke
Original Assignee
Bennecke, Gabriele
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 DE200420008166 external-priority patent/DE202004008166U1/de
Application filed by Bennecke, Gabriele filed Critical Bennecke, Gabriele
Publication of WO2005116546A1 publication Critical patent/WO2005116546A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D7/00—Devices using evaporation effects without recovery of the vapour
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/10—Cooling bags, e.g. ice-bags
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/16—Materials undergoing chemical reactions when used
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0059—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit
    • A61F2007/0063—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit for cooling
    • A61F2007/0068—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit for cooling evaporating on the spot to be cooled
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • A61F2007/0244—Compresses or poultices for effecting heating or cooling with layers
    • A61F2007/026—Compresses or poultices for effecting heating or cooling with layers with a fluid absorbing layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
    • F25D2303/0822—Details of the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/26—Refrigerating devices for cooling wearing apparel, e.g. garments, hats, shoes or gloves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
    • F25D3/06—Movable containers
    • F25D3/08—Movable containers portable, i.e. adapted to be carried personally

Definitions

  • the invention relates to a cooling device for cooling a surface essentially by evaporative cooling, the cooling device having at least one chamber with an inner layer which is arranged on the cooling surface side during cooling, and with an outer layer which faces away from the cooling surface and with a cooling medium which is arranged in the chamber between the inner and outer layer, the cooling medium having a hydrogel which forms granules in the dry state, binds water and releases the water in the state loaded with water by evaporation to produce evaporative cooling.
  • rags or cloths can be soaked in water and placed on the surface to be cooled. These have the disadvantage that the cooling effect diminishes after a relatively short time as soon as the cloth has dried. In addition, such pads are damp and are therefore often perceived as uncomfortable and impractical.
  • cooling devices therefore mostly contain a liquid, a gel or another material that is pre-cooled in the refrigerator or freezer.
  • Such cooling pads or cooling cushions as are described, for example, in DE 299 20 079 U1, can therefore not be used at short notice and cannot be transported and kept in use for a long period of time, but require prior cooling and cool storage.
  • a cooling device for cooling people which contains a hydrogenated gel.
  • the gel releases water in vapor form and cools through evaporative cooling.
  • the cooling device of US Pat. No. 5,785,980 has the disadvantage that it consists of textile materials that absorb sweat when exposed to moisture, in particular when cooling living beings, and after some time take on an unpleasant odor due to microorganism activity, as is known, for example, from worn sportswear.
  • the invention has for its object to provide a cooling device which - in particular without pre-cooling in a refrigerator or freezer - has a good cooling effect and which when used even when in contact with moisture and / or sweat almost no, but at least less annoying odor than developed the conventional cooling devices.
  • a cooling device for cooling a surface essentially by evaporative cooling, the cooling device having at least one chamber with an inner layer which, during cooling, leads to the surface to be cooled, i.e. to the cooling surface, and with an outer layer that faces away from the cooling surface and with a cooling medium that is arranged in the chamber between the inner and outer layer, the cooling medium having a hydrogel that forms granules in the dry state, water binds and releases the water when it is loaded with water by evaporation to produce evaporative cooling.
  • the cooling device in particular the cooling medium and / or the inner and / or the outer layer, is equipped with substances which counteract an annoying odor.
  • the inner and outer layers are each relative to the surface to be cooled, i.e. to the cooling surface, to understand.
  • the inner layer is the side of the cooling device which faces the surface to be cooled, and the outer layer is the side facing away from the cooling surface.
  • the cooling device according to the invention has many possible uses. For example, it can be used to cool parts of the body / parts of the body of humans or animals or to cool objects.
  • the cooling device according to the invention can also be used in the form of a container for cooling bottles, cans or the like. It can be part of a hat, such as a cappy's. It can be designed as a cooling belt, which is worn as a lanyard or as a headband. Furthermore, a cooling pad for pets, a collar for pets, a horse cooling gaiter or bandage are conceivable.
  • the person skilled in the art knows the various special embodiments of the cooling device according to the invention.
  • the inner and / or the outer layer and / or the cooling medium, in particular the hydrogel can be antimicrobial.
  • Antimicrobial in the sense of the invention means that the cooling device is designed to inhibit odor and shows no "sweat smell" or moldy smell even after prolonged or repeated use.
  • the possible formation of odors after use when the cooling device according to the invention is stored in a low-fresh air condition can be avoided by specifically selecting the materials of the cooling device which are equipped, for example, with special inhibitors.
  • materials can be selected which, by means of special equipment, prevent the formation of mold stains and odors as a result of flour from the stored finished cooling device. It is important for the materials which can be used in the context of this invention that, although they hinder the growth and multiplication of the odor-forming microorganisms, they do not damage humans or animals.
  • the hydrogel-forming granules can additionally be coated with odor absorbents and / or with coatings of functional substances such as fragrances, flavors or the like.
  • the inner and / or the outer layer and / or the cooling medium for antimicrobial finishing can contain or be coated with silver or silver compounds.
  • the inner and / or the outer layer and / or the cooling medium can contain cyclodexterine or its derivatives for antimicrobial finishing.
  • Cyclodextrins are cyclic sugar molecules that are fixed with the textile in one of the finishing processes mentioned, for example. They can absorb a wide variety of additives and can be loaded again after they have been dispensed (for example by washing). Chitosan capsules, phospholipids, etc. are also suitable as a carrier material for additives.
  • the inner and / or the outer layer and / or the cooling medium, in particular the hydrogel can be equipped with mosquito repellents and / or oils and / or odor stoppers and / or fragrances and / or microorganisms.
  • suitable, in particular antimicrobial, equipment for indirect odor prevention or significant odor reduction are: - Silver bound to activated carbon or only activated carbon for irreversible binding of odor molecules, in particular to the inner and / or outer layer, especially if this is used for this nonwoven fabric, - Polymers made of PET / PE with firmly embedded silver as zeolite, - especially to the inner one and / or the outer layer of applied nano-silver powder, - "Sanitized", a microbiostatic, possibly antibacterial chemical that is integrated into the extrusion of PP filaments and cannot be washed out, - odor stopper based on cyclodextrins or their derivatives, - Chitosan capsules with aromas and
  • Additives vary depending on the solution to the problem, depending on the materials created and the active ingredients.
  • the cooling medium in particular in addition to the hydrogel, can contain 1 to 50% by weight of an inert carrier material, preferably titanium dioxide.
  • an inert carrier material preferably titanium dioxide.
  • This filler has a positive effect on the distribution of the hydrogel.
  • suitable carriers are silica gel, vermiculite, bentonite, titanium oxide.
  • the carriers of the functional components should be difficult or impossible to wash out, have a low specific weight, be inert to the granules, the materials used in particular for the inner and / or outer layer and the skin, and can be disposed of in an environmentally friendly manner, while at the same time being low Purchase costs are aimed for.
  • the specific weight of the filler is less than the specific weight of the granulate.
  • the carrier material should be able to absorb functional agents for odor binding, odor masking, fragrances, aromas or odor-suppressing, human-compatible microorganisms.
  • the preferred carrier material is itself capable of storing water or water vapor and releasing it via evaporation.
  • the selected carrier material also offers the possibility, due to the Mixing ratio with the hydrogel-forming granules to control the preferred cooling intensity depending on the water evaporation.
  • the person skilled in the art can freely choose the amount of the appropriate carrier, taking into account the main properties of the finished product, to enable cooling to be repeated frequently.
  • Titanium dioxide in particular in the size of nanoparticles, is preferably applied to the hydrogel-forming granulate or the resulting hydrogel. Alternatively, it can be used as an additive to the water phase for hydrogel formation. The goal is to avoid odor formation by inhibiting microorganisms and to maintain a hygienized hydrogel.
  • Titanium dioxide triggers photoelectrochemical reactions with many substances when illuminated with UV light and is able to oxidize almost any organic molecule under the influence of light (wavelength ⁇ 390 nm). Titanium dioxide is corrosion-resistant, inexpensive and non-toxic. For example, self-cleaning effects can be achieved by breaking down organic contaminants as well as antimicrobial effects.
  • FIG. 1 shows a cross section through a hydrogel-filled chamber of a cooling device according to the invention
  • FIG. 3 shows two adjacent chambers of a cooling device according to the invention with an intermediate chamber connecting the chambers without hydrogel, in partial cross section, and
  • Fig. 4 is a plan view of a "quilted" cooling device.
  • a chamber 10 of a cooling device has an inner layer 11 and an outer layer 12 made of flat, textile material, which are connected to one another, in particular sewn, in the respective chamber end regions 13 to form the chamber 10.
  • the inner layer 11 faces and lies against a surface to be cooled, which is not shown.
  • layers 11, 12, i.e. A granulate, namely a hydrogel 14 is arranged inside the closed chamber 10.
  • the cooling device itself consists of at least one, usually several, interconnected chambers 10.
  • the hydrogel 14 is coated with antimicrobial substances.
  • silver is incorporated into both the inner and outer layers 11, 12, which also has an antimicrobial effect.
  • FIG. 2 shows two chambers 20, 21 of a further cooling device.
  • the chambers 20, 21 are formed from an inner layer 22 and an outer layer 23, ie to form the chambers 20, 21, the inner and outer layers 22, 23 were formed along corresponding connecting lines 26, 27, namely seams 26 and 27 connected together.
  • a hydrogel 14 is arranged in the chambers 20, 21. In the drawing, the hydrogel 14 is in the gel-like state loaded with water, as a result of which the chambers 20, 21 have a bulbous shape.
  • the two connecting lines or seams 26, 27 are arranged parallel to one another and include an intermediate region 24 which is flat in plan view. In this flat intermediate area 24, the inner and outer layers 22, 23 form a flat web 25.
  • FIG. 3 shows a further embodiment of chambers 30, 31 with inner and outer layers 33 and 34, in which a hydrogel 14 is arranged.
  • a separate intermediate chamber 35 without granules is formed, which is connected in one piece in particular at its opposite ends to the inner and outer layers 33, 34.
  • the inner and outer layers 33, 34 thus form the lower and upper sides 38, 39 of the intermediate chamber 35.
  • the intermediate chamber 35 has left and right walls 36, 37, which at the same time are the lateral, terminal walls of the chambers 30, 31 form.
  • the walls 36, 37 are connected to the inner and outer layers via seams 41.
  • Through holes 40 are made in the upper side 39 of the intermediate chamber 35, which create a connection between the intermediate chamber 35 and the ambient air.
  • the granules are shown in FIG. 3 in a state loaded with water, ie the hydrogel granules are in the form of a gel-like mass. The volume of this mass causes the bulbous shape of the two chambers 30, 31 shown.
  • the intermediate chamber 35 also called the ventilation chamber, is dimensioned with respect to the chambers 30, 31 so that the underside 38 of the cooling device is spaced apart from the cooling surface when the cooling device is in contact is what causes a significant ventilation effect in this area.
  • the holes 40 ensure that air can escape from the intermediate chamber 35 if, for example, the cooling device is to be packed in a space-saving manner when it is not loaded with water.
  • the activation, in the following loading, of the hydrogel 14 of the cooling device takes place by wetting or soaking the dry granules 14 in aqueous solution, the water component being normal tap water, deionized or distilled water, preferably electrolytically treated, sterilized water.
  • the actual hydrogel is formed from the granules, whereby the granules bind water.
  • the granules "loaded” with water are referred to as hydrogels in the sense of the invention. "Loaded” is understood to mean granules which have taken up a large part of the maximum possible amount of water, preferably at least 90%.
  • the cooling device which is filled with a "charged granulate", ie a hydrogel, is then also in the charged state.
  • the following are preferably used as granules for hydrogel formation: starch, pectins, alginates, polymethacrylates, polyvinyl alcohols, cellulose ethers, carboxymethyl cellulose and polypropylene glycol, copolymer based on methyl methacrylate and N-vinylpyrrolidone.
  • the loading time of the granules and the amount of water required for maximum loading depends on the size of the granules.
  • Granules of amorphous structure of 0.1 to 4 mm are preferably used. For maximum loading, these take up approx. 200 g deionized water, approx. 110 g normal tap water, approx. 30 g physiological saline solution, which comes close to the usual sweat content.
  • the charging time depends on the chemical used, the granulate size, the water composition and the additives according to the invention used in individual cases, it being possible for the person skilled in the art to experimentally determine the desired parameters with regard to volume increase and charging time.
  • the granulate preferred in the context of the invention is particularly suitable if, after evaporation of the water in the hydrogel state, it re-forms its dry shape and size and can be reactivated frequently, approximately 30 to 40 times.
  • the initial activatability, the frequency and the duration of the reactivability are significantly influenced by salts, salt concentrations and cation intake during product use and can therefore not be predicted exactly.
  • the chambers are preferably filled with a precisely defined amount of granules per chamber, so that in the loaded state there is optimal volume utilization by the hydrogel and the cooling device remains flexible.
  • the deviation of the amount filled into the chambers is preferably less than 0.1 g, with 0.08 to 0.1 g being particularly sought.
  • the cooling device is preferably precharged with sterile water, preferably with exactly the amount of water required for maximum loading.
  • the cooling device releases the water by evaporation to produce evaporative cooling within a period of at least 3 hours, preferably at least 6 hours, in the state loaded with water.
  • the time span can be at least 12 hours.
  • the cooling device is preferably reusable, i.e. the hydrogel contained in the cooling device can be moistened again after drying and then releases evaporative cooling again.
  • the cooling device is preferably designed such that it remains spatially flexible even when it is loaded with water. Due to the spatial flexibility, the cooling device, even when loaded, adapts to the surface of the object to be cooled, for example to the curvature of a vessel, or the neck or arm of a person, and thus ensures optimal cooling.
  • Chamber size and geometry and granule size and quantity as well as granule composition and mixes with additives which are particularly preferred in individual cases are preferably in relation to one another in such a way that the hydrogel does not collect as clumps in the peripheral areas because of insufficient filling quantity.
  • the material of the inner layer can have a so-called microscopic 3D structure.
  • 3-D structure is understood here to mean a three-dimensional textile structure with which it is possible to incorporate different structures and properties such as elongation, strength and materials during manufacture, ie if the material is placed on a surface, less than 90% is preferred less than 50%, particularly preferably less than 70% of the material flat on the surface.
  • the material preferably has a structure similar to a wave crest sequence. This increases the function of water vapor absorption and considerably improves ventilation. If the selected material does not yet offer a sufficiently structured surface per se, this can be achieved, for example, with the emery known in textile technology.
  • the material of the inner layer is preferably water vapor permeable in both directions and membrane-like only impermeable to liquid water in the direction of the cooling surface.
  • the material of the outer layer can be water vapor permeable in both directions and different from the material of the inner layer, preferably consisting of a hydrophobic, water-repellent and water-impermeable material. In principle, however, the materials of the inner and outer layers can also match.
  • the outer layer and the inner layer can be connected to one another in the area of the chamber in addition to the outer edges of the chamber at at least one point, preferably at one point per cm 2 , preferably in a punctiform manner, the connections being arranged geometrically or statistically.
  • the material of the inner layer is kind to the skin. Due to the impermeability to liquid water in the direction of the surface to be cooled, the cooling surface, the cooling surface, e.g. the skin, dry.
  • Suitable materials for the outer and / or inner layer are known natural fibers or synthetic fibers.
  • Preferred materials for the outer layer and / or the inner layer are microfiber materials.
  • Chemical fibers from filaments and spun yarn fibers (for example from the fiber raw materials polyamide, polyester, polypropylene) are referred to as microfibers, their fibers in the range from 0.1 to 1.0 dtex, of which fibers less than 0.3 dtex in size as ultra-microfibers.
  • the measurement of fine filament yarn, the so-called. Titer (yarn count) dtex (decitex) means 1/10 g per 1,000 m length. Because of the very tightly knitted textile fabrics, there are very many and very small pores between the individual fibers and yarns.
  • Microfibers made of polyester (PES), polyamide (PA) or polypropylene (PP) are preferred Offer different levels of moisture absorption and release capacity due to their technical properties.
  • Air-textured fabrics and / or fibers that are as hygroscopic (fibers that absorb significant amounts of water in their material through swelling) are particularly suitable.
  • the materials can also contain elastic chemical fiber materials, for example elastane, spandex or comparable elastic materials.
  • the materials for the outer and inner layer are selected with regard to the mesh size so that on the one hand they allow optimal absorption of the water vapor, on the other hand its evaporation on the cooling side and / or the opposite side of the cooling product.
  • the mesh size of the material may only be selected to be large enough to prevent the granules or hydrogels inside the chamber from escaping, and the sometimes very small granules or hydrogel particles or other additives.
  • suitable materials for the outer and / or inner layer of the cooling device according to the invention are plastic films or films, latex, rubber, plastic foams, metal-coated plastic films, laminated papers, metal foils or mixtures thereof, for example also with the abovementioned. Microfiber fabrics. Combinations of the materials mentioned, in sandwich form, can also be used, as a result of which a wide variety of additional functions of the respective end product can be achieved. For example, the person skilled in the art can achieve local cooling of the finished product that is desired, limited in time or only partial, by the material combination selected.
  • Textile-related, in particular polyester, polyamide or polypropylene (PP) are suitable for the intended purposes.
  • PP also has an approx. 30% lighter weight than polyester (even lighter than water), which can be advantageous for certain products according to the invention that are worn on the body, particularly in the outdoor area.
  • the highest evaporation cold should be generated on the side of the inner layer, ie in the direction of the cooling surface.
  • textile materials which, in addition to being permeable to water vapor, offer external protection against the ingress of water drops, while at the same time being dirt, oil and grease-repellent on the outer surface.
  • the specialist can also choose textile outer surfaces equipped with UV protection.
  • a polyester ester base is more suitable if, for example, the outer fabric is to be thermally printed, than a polyamide, which is temperature-resistant to a limited extent from approx. 180 ° C.
  • Nonwovens are available to the person skilled in the art for other areas of application.
  • materials or material mixtures are also suitable for producing the cooling device, the front and back of which are coated differently with regard to the material and / or its permeability to water vapor, for example based on polyurethane (PUR).
  • PUR polyurethane
  • Materials equipped in this way enable, for example, the absorption of moisture and water vapor on one side, the release of water vapor as well as the rejection of drop-shaped water (so-called lotus effect), dirt, oil or fat on the other.
  • the latter function is achieved, for example, by coating with Teflon (PTFE).
  • PTFE Teflon
  • the material of the inner or outer layer itself has functionally certain properties that are important for the function of the end product, e.g. with regard to the fabric geometry in the finished state, stretch direction (different stretch factors in the longitudinal, transverse or longitudinal / transverse direction), tensile strength, etc.
  • stretch direction different stretch factors in the longitudinal, transverse or longitudinal / transverse direction
  • tensile strength etc.
  • fiber constructions e.g. Cavity fibers, surface-structured shapes etc. as well as the positions of the fibers to be specified in the braid and possibly also different thicknesses of the fibers or the fiber mixtures.
  • the outer and inner layer can be used to form one or more chambers, taking into account the materials used, for example by sewing, welding using heat, high frequency, laser, ultrasound, gluing using "hot melt”. Methods, rivets, staples, stapling or other known joining techniques and combinations thereof.
  • the outer edges of the resulting end product can be closed using conventional techniques from the aforementioned spectrum, and optionally additionally edged.
  • the materials for the inner and outer layer can also be coated or treated in a conventional manner for further effects, such as is customary for protective or functional clothing.
  • connection between the material of the inner layer and the material of the outer layer is preferably carried out by sewing, welding by means of heat, high frequency, laser, ultrasound, gluing, gluing by means of "hot melt” processes, staples, stapling, riveting or other known joining techniques.
  • connection points 53 in the sense of this “quilting”.
  • the individual chambers are connected at the edges by seams.
  • the connection points in the interior of the chamber serve in particular to locate the cooling medium locally as well as possible. They are preferably produced by gluing or laminating. However, they can also be produced using sewing stitches or all of the joining techniques shown above, in particular for the outer edges of the chamber.
  • the locally delimited connection points 53 are point-shaped. As the person skilled in the art easily recognizes, a wide variety of shapes are conceivable here.
  • the locally delimited connection points can also be square, triangular or the like. It is crucial that the dimensions of the connection points are small compared to the dimensions of the cooling device. They preferably occupy an area of less than 2 cm 2 , particularly preferably less than 1 cm 2 or even less than 0.5 cm 2 .
  • the inner and outer layers would be connected to one another to form a chamber, wherein the quilting described is generated in the interior of the chamber by the plurality of connection points.
  • connection points can be arranged in any way relative to one another. Geometric or statistical arrangements are suitable, for example, it being possible for any geometry, such as triangular, square, pentagonal, hexagonal, octagonal or otherwise rasterized, to be used with one another.
  • the connections of the inner and outer layers are preferably arranged square or rectangular to one another.
  • additional strips or disk-shaped parts or a mixture thereof can be fastened between the material surfaces to be fixed (inner layer and outer layer).
  • various goals can be achieved, such as maintaining distance, increasing stability, optimizing ventilation, and forming connecting channels between the individual chambers. This configuration is less preferred.
  • one or more smaller chambers are integrated into the chamber, so that in principle a double chamber is created.
  • the smaller, inner chambers can be made of the same material as the outer chamber and / or consist of additional foils, such as starch, which dissolve themselves under defined temperature and / or humidity conditions. This makes it possible to fill in the other inner chamber (s) with the same or different reactants that, for example, enter into targeted interactions with that of the outer chamber.
  • the inner chamber can also consist of a waterproof material and with water be filled. Pressure on the outer chamber causes the inner chamber to burst, releasing the water and thus activating the surrounding hydrogel in the outer chamber.
  • the cooling device according to the invention can be designed, for example, for cooling people as a cooling belt, which is worn as a lanyard or as a headband.
  • the cooling device preferably has 2 to 8, preferably 3 to 5, tubular chambers.
  • Another possible use is a cooler bag for bottles.
  • the cooling device can also be integrated in a device cooler, in a cooling cappy, in a horse cooling gaiter or bandage, in a cooling blanket for pets or in a collar for pets.
  • the cooling device can be used, for example, to use a drinking bottle cooler.
  • the stability required in the upper product area of the bottle cooler when the bottle is upright is avoided, for example, by segmented chambers for the hydrogel.
  • This is also possible with the appropriately selected textile material, which is put over the bottle to be cooled or placed around it and attached using Velcro, rubber, zipper, hooking system, drawstring, etc. can be attached.
  • microfibre textile that has an Proportion of elastic synthetic fibers such as elastane or spandex, preferably up to 30%, preferably up to 20%, particularly preferably 5%, is mixed.
  • a bottle cooler designed in this way can be put over the bottle and, depending on the degree of swelling of the hydrogels, clings to the surface without the need for a special fixing device.
  • Cooling devices in the form of textile tubes filled with the hydrogel-forming granulate can be divided into a packet chain by known techniques (sewing, welding, ultrasound, etc.) or configured as small individual packets.
  • the textiles suitable for this purpose are preferably equipped with non-washable aromas, repellent mosquitoes or other functional active ingredients already during the production of the material.
  • a production method for producing the cooling device according to the invention has the following steps, for example: the inner layer and the outer layer are connected to one another to form a chamber substantially along the outer edges of the chamber, an opening being at least partially retained in the outer edge,
  • the inner layer and the outer layer are connected to one another in addition to the outer edges at at least one point, preferably at one point per 1 cm 2 , preferably in a punctiform manner, the connection points being arranged geometrically or statistically,
  • the hydrogel is blown in as dry granules through an opening in the outer edge, the connections between the inner and outer layers essentially preventing the dry granules from trickling into the chamber, and

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Public Health (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

L'invention concerne un système servant à refroidir une surface sensiblement par un froid dû à l'évaporation. Ce système de refroidissement comprend au moins une chambre (10, 20, 21, 30, 31, 50, 51, 52) qui présente une couche intérieure (11, 22, 33) faisant face à la surface de refroidissement pendant le refroidissement, ainsi qu'une couche extérieure (12, 23, 34) opposée à la surface de refroidissement, un agent de refroidissement étant disposé dans la chambre (10, 20, 21, 30, 31, 50, 51, 52) entre les couches intérieure et extérieure (11, 12, 22, 23, 33, 34). Ledit agent de refroidissement présente un hydrogel (14) qui forme un granulat à l'état sec, se lie avec l'eau et, lorsqu'il est chargé d'eau, libère cette eau par évaporation de façon à produire un froid dû à l'évaporation. Selon l'invention, ce système de refroidissement, en particulier l'agent de refroidissement et/ou la couche intérieure et/ou la couche extérieure (11, 12, 22, 23, 33, 34) sont pourvus de substances agissant contre la formation d'odeurs indésirables.
PCT/EP2005/004163 2004-05-19 2005-04-19 Systeme de refroidissement pour refroidir des surfaces WO2005116546A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE200420008166 DE202004008166U1 (de) 2004-05-19 2004-05-19 Trageband mit Temperaturspeichermedium
DE202004008166.0 2004-05-19
DE102004046707.2 2004-09-27
DE102004046707 2004-09-27

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WO2005116546A1 true WO2005116546A1 (fr) 2005-12-08

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PCT/EP2005/004163 WO2005116546A1 (fr) 2004-05-19 2005-04-19 Systeme de refroidissement pour refroidir des surfaces

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190011138A1 (en) * 2012-03-07 2019-01-10 Aermist Llc Evaporative HVAC Apparatus
WO2024100619A1 (fr) * 2022-11-11 2024-05-16 Associação Almascience – Investigação E Desenvolvimento Em Celulose Para Aplicações Inteligentes E Sustentáveis Enceinte de contenant comprenant une enceinte de transfert de chaleur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020215713B3 (de) 2020-12-11 2022-05-25 ITP GmbH Gesellschaft für intelligente textile Produkte Kühlvorrichtung und Kühleinheit mit mindestens einer Kühlvorrichtung

Citations (3)

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Publication number Priority date Publication date Assignee Title
US5755110A (en) * 1996-09-26 1998-05-26 Silvas; Cesar F. Cooling vest with elongated strips containing a polymer absorbing material
US20020073481A1 (en) * 2000-12-20 2002-06-20 Kimberly-Clark Worldwide, Inc. Cooling garment
US20030208831A1 (en) * 2002-05-07 2003-11-13 Lazar Robert P. Cooling garment made of water-resistant fabric

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JPH0733100Y2 (ja) * 1988-05-19 1995-07-31 三順 中嶋 ジョッキ用保冷具
US6269654B1 (en) * 1998-05-15 2001-08-07 Thermal Products, Inc. Porous laminated, super absorbent, hydratable, temperature control pack system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5755110A (en) * 1996-09-26 1998-05-26 Silvas; Cesar F. Cooling vest with elongated strips containing a polymer absorbing material
US20020073481A1 (en) * 2000-12-20 2002-06-20 Kimberly-Clark Worldwide, Inc. Cooling garment
US20030208831A1 (en) * 2002-05-07 2003-11-13 Lazar Robert P. Cooling garment made of water-resistant fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190011138A1 (en) * 2012-03-07 2019-01-10 Aermist Llc Evaporative HVAC Apparatus
WO2024100619A1 (fr) * 2022-11-11 2024-05-16 Associação Almascience – Investigação E Desenvolvimento Em Celulose Para Aplicações Inteligentes E Sustentáveis Enceinte de contenant comprenant une enceinte de transfert de chaleur

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