BRPI0710420A2 - sistema de resfriamento por contato - Google Patents

sistema de resfriamento por contato Download PDF

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Publication number
BRPI0710420A2
BRPI0710420A2 BRPI0710420-0A BRPI0710420A BRPI0710420A2 BR PI0710420 A2 BRPI0710420 A2 BR PI0710420A2 BR PI0710420 A BRPI0710420 A BR PI0710420A BR PI0710420 A2 BRPI0710420 A2 BR PI0710420A2
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BR
Brazil
Prior art keywords
cold
cooling fluid
cold energy
container
collecting
Prior art date
Application number
BRPI0710420-0A
Other languages
English (en)
Inventor
Jose Antonio Serrano Molina
Original Assignee
Prendas Capricornio S L
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Filing date
Publication date
Application filed by Prendas Capricornio S L filed Critical Prendas Capricornio S L
Publication of BRPI0710420A2 publication Critical patent/BRPI0710420A2/pt

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
    • A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
    • A41D13/0053—Cooled garments
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/285—Ventilating arrangements with additional heating or cooling means
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/005—Active or passive body temperature control
    • 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
    • A61F2007/0001—Body part
    • A61F2007/0002—Head or parts thereof
    • 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
    • A61F2007/0001—Body part
    • A61F2007/0018—Trunk or parts thereof
    • 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
    • A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • A61F2007/0056—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water for cooling
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

Sistema de resfriamento por contato. Compreende um fluido de resfriamento para resfriar um corpo ou objeto e pelo menos uma superficie de transmissão fria (9, 22, 36) em contato direto ou indireto com o mencionado corpo ou objeto. é caracterizado por compreender pelo menos um dispositivo (3, 3a, 3b) para recolher e armazenar energia de frio que pode receber uma quantidade previamente determinada de fluido de resfriamento de um dispositivo de carregamento externo, armazenar o mencionado frio e transmiti-lo em uma velocidade e temperatura previamente definidas para a mencionada superfície de transmissão fria (9, 22, 36). é obtido um sistema no qual não é necessário utilizar um depósito criogênico que faz parte dele, de forma que a segurança é aumentada e o custo é reduzido. Além disso, o sistema fornece uma grande autonomia, pois pode armazenar uma grande quantidade de energia de frio.

Description

Sistema de resfriamento por contato.
A presente invenção refere-se a um sistema de resfriamentopor contato.
Antecedentes da invenção
Existem diferentes sistemas de resfriamento conhecidos pormeio de contato de um corpo ou objeto, como será descrito a seguir.
US 5.438.707 e US 4.738.119 descrevem, respectivamente,dispositivos de resfriamento de um corpo que compreende uma vestimenta que abrigauma rede de tubulação equipada com pequenas aberturas ou microporos, através dosquais flui gás pressurizado, tal como ar ou dióxido de carbono. O mencionado gáspressurizado, uma vez injetado, expande-se rapidamente através das mencionadasaberturas ou microporos, resfriando-se e absorvendo uma grande quantidade de calor,produzindo um efeito de resfriamento para o usuário da vestimenta.
Os mencionados dispositivos apresentam a desvantagem deque incluem, na mencionada vestimenta, um circuito de tubulação muito extenso ecomplexo, através do qual flui a substância de resfriamento, resultando em umavestimenta não muito flexível. Além disso, os tubos resfriam a vestimenta somentequando o gás pressurizado flui através deles, mas não podem armazenar energia de friodurante um longo período. Por outro lado, qualquer rasgo da mencionada vestimentapode afetar o circuito, tornando o dispositivo de resfriamento inútil, e pode tambémpromover um vazamento do mencionado refrigerante que, dependendo do tipo desubstância utilizada, pode envolver um perigo sério para o usuário do dispositivo.
Além disso, uma outra desvantagem é que os mencionadosdispositivos não podem ser utilizados com refrigerantes sob temperatura muito baixa,pois nesses dispositivos o refrigerante entra em contato direto com o usuário davestimenta.
A patente US. 5787505 divulga um dispositivo dearrefecimento ou aquecimento de um órgão constituído por uma peça com um ou váriosbolsos desde que inserir um pacote de aquecimento ou de arrefecimento. O pacote incluiarrefecimento apertado compartimentos contendo água ou outro material que muda o seuestado quando absorve calor, ao frio, por isso, o utente da referida peça.
A patente US 5038779 divulga uma peça terapêutico paratrás dores incluindo pelo menos um bolso na região lombar desde a casa um pacote frio.A bolsa é feita em um pedaço de um material dobrada sobre a peça de vestuário.
Ambos os dispositivos divulgados nestes dois documentostêm a desvantagem de que não se encontram aptos a fornecer refrigeração, a umatemperatura muito baixa, porque o resfriamento pacotes estão em contacto directo com outente do vestuário.A pedido da patente internacional WO 2005112675, damesma recorrente do que o presente invenção, divulgue um dispositivo de refrigeraçãoum órgão constituído por uma peça de vestuário em contato com o referido organismo,como nitrogênio líquido refrigerante para esfriar disse vestuário e meios dearmazenamento de refrigerante disse. A peça inclui uma camada de condução do tecidocom uma condutividade térmica adequada para transmitir o calor por contato para dizerrefrigerante.
This device has the drawback that the wearer of the garmentmust wear one or more deposits of Iiquid nitrogen, which the involved risk if there is a Ieakat each of said deposits. On the other hand, the use of cryogenic deposits makes thedevice expensive.
DESCRIPTION OF THE INVENTION
The objective of the cooling system by contact of the presentinvention is to solve the drawbacks known in the art, providing a number of advantageswhich will be described hereinafter.
The cooling system by contact of the present inventioncomprises a cooling fluid to cool a body or object, and at Ieast a cold transmission surfacein direct or indirect contact with said body or object, and it is characterized in that itcomprises at Ieast a device for collecting and storing frigories that can receive a presetquantity of cooling fluid from an externai charging device, store said frigories and transmitthem at a preset velocity and temperature to said cold transmission surface .
Therefore, the use of a cryogenic deposit forming part of thecooling system by contact is not necessary, as at the state of the art, and the security isenhanced because there is no risk of Ieaks and/or explosion when the pressure isincreased, and the cost is considerably reduced.
Furthermore, the system provides a great autonomybecause it can store a great quantity of frigories, about 20 to 40 Kilofrigories .
As stated above, in the system of the present invention, thecooling fluid is charged by an externai charging device offering a pressure enough toinject said cooling fluid to the system. When it is necessary to charge cooling fluid, thesystem of the invention is connected at that moment to the externai charging device,transferring by injection the cooling fluid to the elements of the cooling system by contact,therefore transferring frigories thanks to the configuration of the elements of the systemitself.
Advantageously, said at Ieast one device for collecting andstoring frigories comprises at Ieast a thermal transmission element.
Preferably, each transmission element presents a thermalconductivity suitable to obtain a final preset temperature during an also preset time.According to a fírst embodiment of the invention, the systemis engaged on a garment. Advantageously, said at Ieast one device for colleting andstoring frigories comprises a thermally isolated container, with the exception of a coldtransmission surface in direct or indirect contact with the body or object to be cooled.Preferably, the container comprises a radiator provided with internai channels andexternai wings.
Advantageously, the container also comprises a viscous gelaround the radiator, filling the volume of the container not occupied by the radiator.According to a second embodiment of the invention, the system is engaged inside aprotection helmet between an externai Iayer and a cold transmission surface in contactwith the head of the user.
Advantageously, said at Ieast one device for collecting andstoring frigories comprises a tube for conducting and distributing cooling fluid, preferablyin spiral shape, occupying the whole extension of the helmet.
Preferably, the tube for conducting and distributing coolingfluid is placed inside a security padded layer.
Advantageously, said at Ieast one device for collecting andstoring frigories also comprises a layer of viscous gel placed between the tube forconducting and distributing cooling fluid and the cold transmission surface.
According to a third embodiment of the invention, the systemis engaged to a fridge or cold recipient.
Advantageously, said at Ieast one device for collecting andstoring frigories comprises a container thermally isolated by an externai isolating layer,with the exception of a cold transmission surface in direct or indirect contact with theinternai part of the fridge. Preferably, the container comprises a viscous gel.
Advantageously, the cooling fluid is a cryogenic fluid.Preferably, said cryogenic fluid is Iiquid nitrogen . In anyone of the previous embodiments,the system comprises means for conducting and distributing said cooling fluid to said atIeast one device for collecting and storing frigories.
Advantageously, said means for conducting and distributingthe cooling fluid include an intake duct provided at an end with an intake nozzle providedwith a valve to be connected intermittently to the externai charging device.
Preferably, said intake duct is joined at its other end to adistribution element distributing the cooling fluid to each device for collecting and storingfrigories through secondary ducts.
Preferably, the attachment between the intake nozzle andthe externai charging device is of bayonet kind.
Advantageously, the system comprises control means for thetemperature transfer.
Preferably, said control means for the temperature transfercomprises adjusting means of the distance between the body or object to be cooled andthe cold transmission surface.
Advantageously, the system comprises means for storing thewater generated by the condensation process, using it to increase the existing frigories.
Preferably, said means for storing condensation watercomprises an absorbent fabric.
Alternatively, the system comprises waterproofing meanspreventing the condensation water to contact the body or object to be cooled, and meansfor collecting and evacuating said condensation water.
Optionally, the system is housed inside a thermally sealedgarment to prevent condensation inside it.BRIEF DESCRIPTION OF THE DRAWINGS
To make the description of that disclosed previously easiersome drawings are attached in which, diagrammatically and only as a non-limitativeexample, some practical cases of embodiments of the cooling system by contact areshown, in which:
Fig. 1 is a frontal perspective view of a garment provided with the cooling system bycontact, according to a first embodiment of the invention;
Fig. 2 is a rear perspective view of the garment of Fig. 1;
Fig. 3 is a perspective view of the radiator;
Fig. 4 is a perspective view of the radiator placed inside the container without a lid;
Fig. 5 is a lateral section view of a helmet including the cooling system by contact,according to a second embodiment of the invention;
Fig. 6 is a plan view of the helmet of Fig. 5, showing the internai elements;
Fig. 7 is a perspective view of a fridge including the cooling system by contact, accordingto a third embodiment of the invention;
Fig. 8 is a plan view of the fridge of Fig. 7; and
Fig. 9 is a transversal cross-section of a wall of the fridge of Figs. 7 and 8.
DESCRIPTION OF PREFERRED EMBODIMENTS
Hereinafter three preferred embodiments of the coolingsystem by contact are described.
A first embodiment is shown if Figs. 1 to 4, where it can beseen that the cooling system 1 by contact is applied to a garment 2, such as a vest.
In this case, the cooling system 1 by contact comprises threedevices 3 for collecting and storing frigories arranged on the vest 2, and that can receive apreset quantity of cooling fluid, specifically Iiquid nitrogen, from an externai chargingdevice (not shown).
To do this, the system 1 comprises means to conduct anddistribute the Iiquid nitrogen comprising an intake duct 4 provided at an end with an intakenozzle 5 provided with a valve to be connected intermittently to the externai chargingdevice. Said intake duct 4 is connected by its other end to a distributing element 6 whichdistributes the Iiquid nitrogen to each device 3 for collecting and storing frigories throughsecondary ducts 7. The attachment between the intake nozzle 5 and the externai chargingdevice can be a system of bayonet kind, because it is an efficient and comfortableattachment. Therefore1 it is assured that there are no disconnection problems from thecontractions produced when the Iiquid nitrogen flows. The nozzle 5 can be housed insidethe vest 2, and it can be uncovered by a zip, and when the charge is finished, it can behidden inside the garment 2.
The design of the ducts 4 and 7 is ergonomic, so that theycan remain disguised and they do not disturb the wearer.
The material suitable for the conduction and distributionmeans 4 to 7 of the Iiquid nitrogen is a non- metallic material such as Teflon1 Pyrex1Armaflex1 among others, the metallic material being not suitable because it can crack.
Another option consists in not using conducting anddistributing means of the Iiquid nitrogen, so that each collecting and storing device 3 offrigories is fed directly from the externai charging device. Therefore1 the ergonomics of thegarment 2 is enhanced.
With reference to Figs. 3 and 4, each collecting and storingdevice 3 of frigories comprises a container 8 thermally isolated, except a wall 9 with aminimum width, which will contact the garment 2, acting as a cold transmission surface,as will be explained hereinafter.
The container 8 can be made from a plastic material, suchas polyurethane; and the cold transmission surface 9 can be made from plastic o metallicmaterial, taking into account that the metal will provide to the garment 2 a temperatureIower than about -300C, compared with the plastic material, which will provide about -150C.
The container 8 comprises a body with a Iid which housesinside it a radiator 10 provided with internai channels (not shown) and externai wings 11.The material suitable for the radiator 10 is a metal, such as aluminum, copper, and steel,among others.
The charge of Iiquid nitrogen is injected inside the radiator 10through an intake duct 12, and flows through internai channels, so that said radiator 10can collect frigories from the nitrogen when it pass through the channels, and it canincrease the temperature from - 1980C (temperature of the Iiquid nitrogen) to about -160°C (temperature at which the nitrogen changes its state from Iiquid to gas) . The gasinside the radiator 10 exits outside the container 8 through exit ducts 13, providing the Iastfrigories to the system 1. On the other hand, the container 8 comprises a viscous gel (notshown) surrounding the metallic radiator 10 and filling the volume of the container 8 notfilled by the radiator 10. The design of the radiator 10 is optimized thanks to the externaiwings 11 to provide a maximum contact area with the gel.
Said gel has a thermal conductivity suitable for storingtransferred from the metallic radiator 10 by contact, passing from about -160°C to about -40°C.
It must be pointed out that the gel permits to transmit coldslowly during a preset time to the cold transmission surface 9 of the container 8, whichreceives a temperature of about -150C. This temperature is suitable to be supported bythe human body during about two hours when it is under conditions of environmental heatof more than 1000C, as is the case of firemen. The system can provide between 20 and40 Kilofrigories, providing a great autonomy .
The used gel can be any known gel, whose thermalproperties permit to reach a suitable final temperature and to transmit cold during a presettime. Even though gel is the more suitable material because of its easy placement andadaptation to the externai surface of the metallic radiator 10, it must be pointed out that itcould be used a plastic material in the place of gel, such as polypropylene, polyethylene,among others.
The container 8 makes, therefore, the functions of containingthe radiator 10 and the gel, and also of permitting the transfer of temperature through thesurface 9 presenting a thickness of 0.2 mm.
Therefore, in this first embodiment there are three Iayerstransmitting frigories between the Iiquid nitrogen and the garment 2, which are: themetallic radiator 10, the gel, and the surface 9 which transmits cold of the container.
The system 1, once assembled, can be auto- portable, i.e. itcan comprise a fixation between the different components by elastic harnesses andstraps.
A second embodiment is shown is Figs. 5 and 6, where itcan be seen that the cooling system Ia by contact is applied to a helmet 20, such as amotorist helmet. The system Ia is placed between an externai Iayer 21 of the helmet and asurface 22 in contact with the head of the user, which will have the function of coldtransmission surface, as it will be described hereinafter.
In this case, the cooling system Ia by contact comprises asingle device 3a for collecting and storing frigories suitable to receive a preset quantity ofcooling fluid, specifically Iiquid nitrogen, from an externai charging device (not shown).
To do this, the system Ia comprises a tube 23 to conduct anddistribute the Iiquid nitrogen, in the shape of a spiral, placed inside a security padded Iayer24, to cover efficiently the whole surface of the helmet 20. Said tube 23 comprises anintake nozzle 25 provided with a valve to be connected intermittently to the externaicharging device. The material suitable for said conduction and distribution tube 23 of theIiquid nitrogen is Teflon, and metal cannot be used for security reasons. Therefore1 thetube 23 of Teflon can collect quickly a great quantity of frigories, and it can increase thetemperature from -1980C of the Iiquid nitrogen to about -1600C.
Adjacent to said padding Iayer 24 there is a Iayer 26 of gel(not shown) with a thermal conductivity suitable to collect frigories transmitted by the tube23 of Teflon through the padding Iayer 24, and storing them during a preset time, passingfrom about -1600C to about - 400C. It must be pointed out that gel permits to transmitslowly the cold during a preset time to the cold transmitting surface 22, which receives atemperature of about -150C, being this temperature suitable to be supported by thehuman body during about two hours when it is under environmental heat conditions ofmore than 400C, such as Formula One drivers.
Therefore, in this second embodiment there are two coldtransmission Iayers between the Iiquid nitrogen and the Iayer 22 of material of the helmetin contact with the head of the user, which are the tube 23 of Teflon and the gel.
A third embodiment is shown in Figs. 7 to 9, where it can beseen that the cooling system Ib by contact is applied to a fridge or cold recipient 30, thatcan be placed in a double bottom.
In this case, the cooling system Ib by contact comprises fourdevices 3b to collect and store frigories placed each one in a wall of the fridge 30, that canreceived a preset quantity of cooling fluid, specifically Iiquid nitrogen, from an externaicharging device.
To do this, the system Ib comprises conduction anddistribution means of the Iiquid nitrogen comprising a main duct 31 provided at an endwith an intake nozzle 32 provided with a valve to be connected intermittently to theexternai charging device. The Iiquid nitrogen is distributed to each collecting and storingdevice 3b of frigories through secondary ducts 33. The suitable material for the conductingand distribution means of the Iiquid nitrogen is a non-metallic material, such as Teflon,Pyrex1 Armaflex, among others, the metal being not suitable because it can crack.
Each collecting and storing device 3b of frigories comprisesa container 34 thermally isolated by an isolating externai Iayer 35, except a wall 36 whichwill be in contact with the internai part of the fridge 30, acting as a cold transmissionsurface, such as will be described hereinafter.Each container 34 houses inside it gel (not shown) with athermal conductivity suítable to collect frigories from the Iiquid nitrogen and store themduring a preset time, passing from about -1980C to about -400C.
It must be pointed out that gel permits to transmit slowly thecold during a preset time to the cold transmission surface 36 in contact with the internaipart of the fridge 30.
Therefore, in this third embodiment there is one frigoriestransmission Iayer between the Iiquid nitrogen and the cold transmission surface 36 incontact with the internai part of the fridge 30, which is the gel.
The system Ib can also be used in vehicles of transportationof perishable products to maintain the legal established temperature to preserve the foodin harmless conditions and suitable to be consumed. In anyone of the describedembodiments control means of the transfer of temperature can be used, consisting inadjusting the distance between the contact surface with the user or object to be cooledand the cold transfer surface to modify the interchange of frigories. E.g. in the case of thegarment or helmet, said control means can consist in an air chamber provided betweenthe cold transmission surface and the human body, and said air chamber can be inflatedwhen the final temperature is too low; or, in the case of the fridge, it can consist in otherkind of means separating two metallic surfaces, one of them being the cold transmissionsurface.
It must be pointed out that in some environments, thecontainer can present a water condensation greater than that expected. When the userpretends to use the own condensation, the system can include means to store the watergenerated by the condensation process, using it afterwards to increase the existingfrigories . To do this, said means for storing the condensing water can comprise anabsorbent fabric.
When it is not wished to use the condensation water, thesystem can comprise waterproofing means preventing the condensation water to contactthe body or object to be cooled, and means to collect and evacuate said condensationwater. E.g. in the case of a garment or helmet, it can include a tube at its Iower part toevacuate the water. In the case of a fridge, it can include known systems to prevent thecondensation.
Furthermore, the system of the invention can be housedinside a thermally sealed garment to prevent condensation inside it.

Claims (26)

1. Sistema de resfriamento (1, 1a, 1b) por meio decontato, que compreende um fluido de resfriamento para resfriar um corpo ou objeto epelo menos uma superfície de transmissão fria (9, 22, 36) em contato direto ou indiretocom o mencionado corpo ou objeto, caracterizado pelo fato de que compreende pelomenos um dispositivo (3, 3a, 3b) para recolher e armazenar energia de frio que podereceber uma quantidade previamente definida de fluido de resfriamento de um dispositivode carregamento externo, armazenar a mencionada energia de frio e transmiti-la em umavelocidade e temperatura previamente definidas para a mencionada superfície detransmissão fria (9, 22, 36).
2. Sistema (1, 1a, 1b) conforme a reivindicação 1,caracterizado pelo fato de que pelo menos um dispositivo (3, 3a, 3b) para recolher earmazenar energia de frio compreende pelo menos um elemento de transmissão térmica(9, 10, 23).
3. Sistema (1, 1a, 1b) conforme a reivindicação 2,caracterizado pelo fato de que cada elemento de transmissão (9, 10, 23) apresenta umacondutividade térmica apropriada para obter uma temperatura previamente definida finaldurante um período de tempo também previamente definido.
4. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações 1 a 3, caracterizado pelo fato de que é encaixado em uma vestimenta (2).
5. Sistema (1, 1a, 1b) conforme a reivindicação 4,caracterizado pelo fato de que o mencionado pelo menos um dispositivo (3) para recolhere armazenar energia de frio compreende um recipiente com isolamento térmico (8), comexceção de uma superfície de transmissão fria (9) em contato direto ou indireto com ocorpo ou objeto a ser resfriado.
6. Sistema (1) conforme a reivindicação 5,caracterizado pelo fato de que o recipiente (8) compreende um radiador (10) equipadocom canais internos e asas externas (11).
7. Sistema (1) conforme a reivindicação 6,caracterizado pelo fato de que o recipiente (8) também compreende um gel viscoso emvolta do radiador (10), enchendo o volume do recipiente (8) não ocupado pelo radiador(10).
8. Sistema (1a) conforme qualquer das reivindicações 1a 3, caracterizado pelo fato de que é encaixado no interior de um capacete de proteção(20) entre uma camada externa (21) e uma superfície de transmissão fria (22) em contatocom a cabeça do usuário.
9. Sistema (1a) conforme a reivindicação 8,caracterizado pelo fato de que o mencionado pelo menos um dispositivo (3a) pararecolher e armazenar energia de frio compreende um tubo (23) para conduzir e distribuirfluido de resfriamento, preferencialmente em forma de espiral, ocupando toda a extensãodo capacete (20).
10. Sistema (1a) conforme a reivindicação 9,caracterizado pelo fato de que o tubo (23) de condução e distribuição de fluido deresfriamento é colocado no interior de uma camada estofada de segurança (24).
11. Sistema (1a) conforme qualquer das reivindicações 9ou 10, caracterizado pelo fato de que o mencionado pelo menos um dispositivo (3a) decoleta e armazenagem de energia de frio também compreende uma camada (26) de gelviscoso colocado entre o tubo (23) para condução e distribuição de fluido de resfriamentoe a superfície de transmissão fria (22).
12. Sistema (1b) conforme qualquer das reivindicações 1a 3, caracterizado pelo fato de que é encaixado em um refrigerador ou recipiente frio.
13. Sistema (1b) conforme a reivindicação 12,caracterizado pelo fato de que o mencionado pelo menos um dispositivo (3b) de coleta earmazenagem de energia de frio compreende um recipiente (34) isolado termicamentepor uma camada de isolamento externa (35), com exceção de uma superfície detransmissão fria em contato direto ou indireto com a parte interna do refrigerador.
14. Sistema (1b) conforme a reivindicação 13,caracterizado pelo fato de que o recipiente (34) compreende um gel viscoso.
15. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações anteriores, caracterizado pelo fato de que o fluido de resfriamento é umfluido criogênico.
16. Sistema (1, 1a, 1b) conforme a reivindicação 15,caracterizado pelo fato de que o mencionado fluido criogênico é nitrogênio líquido.
17. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações anteriores, caracterizado pelo fato de que compreende meios (4, 5, 6, 7,-23, 31, 32, 33) de condução e distribuição do mencionado fluido de resfriamento para omencionado pelo menos um dispositivo (3, 3a, 3b) de coleta e armazenagem de energiade frio.
18. Sistema (1, 1a, 1b) conforme a reivindicação 17,caracterizado pelo fato de que os mencionados meios de condução e distribuição dofluido de resfriamento incluem um duto de entrada (4, 23, 31) fornecido em umaextremidade com um bocal de entrada (5, 25, 32) equipado com uma válvula a serconectada intermitentemente ao dispositivo de carregamento externo.
19. Sistema (1, 1b) conforme a reivindicação 18,caracterizado pelo fato de que o mencionado duto de entrada (4, 31) é unido na sua outraextremidade a um elemento de distribuição (6) que distribui o fluido de resfriamento paracada dispositivo (3, 3b) para coleta e armazenagem de energia de frio por meio de dutossecundários (7, 33).
20. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações 18 ou 19, caracterizado pelo fato de que a ligação entre o bocal de entrada(5, 25, 32) e o dispositivo de carregamento elétrico é do tipo baioneta.
21. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações anteriores, caracterizado pelo fato de que compreende meios de controlepara a transferência de temperatura.
22. Sistema (1, 1a, 1b) conforme a reivindicação 21,caracterizado pelo fato de que os mencionados meios de controle para a transferência detemperatura compreendem meios de ajuste da distância entre o corpo ou objeto a serresfriado e a superfície de transmissão fria (9, 22, 36).
23. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações anteriores, caracterizado pelo fato de que compreende meios dearmazenagem da água gerada pelo processo de condensação, utilizando-os paraaumentar a energia de frio existente.
24. Sistema (1, 1a, 1b) conforme a reivindicação 23,caracterizado pelo fato de que os mencionados meios de armazenagem de água decondensação compreende um tecido absorvente.
25. Sistema (1, 1a, 1b) conforme qualquer dasreivindicações anteriores, caracterizado pelo fato de que compreende meios à provad'água que evitam o contato da água de condensação com o corpo ou objeto a serresfriado e meios de coleta e evacuação da mencionada água de condensação.
26. Sistema (1) conforme qualquer das reivindicaçõesanteriores, caracterizado pelo fato de que é abrigado no interior de uma vestimentavedada termicamente para evitar condensação no seu interior.
BRPI0710420-0A 2006-05-10 2007-05-09 sistema de resfriamento por contato BRPI0710420A2 (pt)

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ESP-200601192 2006-05-10
ES200601192A ES2315095B1 (es) 2006-05-10 2006-05-10 Sistema para refrigeracion por contacto.
PCT/EP2007/054466 WO2007128823A2 (en) 2006-05-10 2007-05-09 Cooling system by contact

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EP (1) EP2023754B1 (pt)
CN (1) CN101489424A (pt)
AT (1) ATE501648T1 (pt)
AU (1) AU2007247115A1 (pt)
BR (1) BRPI0710420A2 (pt)
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ES (2) ES2315095B1 (pt)
IL (1) IL195182A0 (pt)
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ES2315095A1 (es) 2009-03-16
WO2007128823A3 (en) 2008-03-06
AU2007247115A1 (en) 2007-11-15
ES2315095B1 (es) 2010-01-05
EP2023754B1 (en) 2011-03-16
ES2363382T3 (es) 2011-08-02
EP2023754A2 (en) 2009-02-18
MX2008014341A (es) 2009-03-10
DE602007013211D1 (de) 2011-04-28
US20090235680A1 (en) 2009-09-24
AU2007247115A2 (en) 2009-03-05
CN101489424A (zh) 2009-07-22
ATE501648T1 (de) 2011-04-15
IL195182A0 (en) 2009-08-03
WO2007128823A2 (en) 2007-11-15

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