[go: up one dir, main page]

WO2012008840A2 - Elément de refroidissement - Google Patents

Elément de refroidissement Download PDF

Info

Publication number
WO2012008840A2
WO2012008840A2 PCT/NL2011/050520 NL2011050520W WO2012008840A2 WO 2012008840 A2 WO2012008840 A2 WO 2012008840A2 NL 2011050520 W NL2011050520 W NL 2011050520W WO 2012008840 A2 WO2012008840 A2 WO 2012008840A2
Authority
WO
WIPO (PCT)
Prior art keywords
layers
cooling element
foil material
liquid
element according
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/NL2011/050520
Other languages
English (en)
Other versions
WO2012008840A3 (fr
Inventor
Vincent Dijkema
Erland Bakkers
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.)
Bakkers Design & Engineering Bv
Ingenieursbureau Van Der Meer & Verweij Beheer Bv
SCREENYARD BV
Original Assignee
Bakkers Design & Engineering Bv
Ingenieursbureau Van Der Meer & Verweij Beheer Bv
SCREENYARD BV
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
Application filed by Bakkers Design & Engineering Bv, Ingenieursbureau Van Der Meer & Verweij Beheer Bv, SCREENYARD BV filed Critical Bakkers Design & Engineering Bv
Priority to MX2014000680A priority Critical patent/MX2014000680A/es
Priority to PCT/NL2011/050520 priority patent/WO2012008840A2/fr
Priority to US14/232,802 priority patent/US20140137596A1/en
Priority to CN201180072253.4A priority patent/CN103975205B/zh
Priority to EP11736201.2A priority patent/EP2732223A2/fr
Publication of WO2012008840A2 publication Critical patent/WO2012008840A2/fr
Anticipated expiration legal-status Critical
Publication of WO2012008840A3 publication Critical patent/WO2012008840A3/fr
Ceased legal-status Critical Current

Links

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
    • F25D31/00—Other cooling or freezing apparatus
    • 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
    • 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
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation

Definitions

  • the present invention relates to a cooling element comprising two layers of a foil material that may or may not be flexible, said two layers of foil material being fastened to one another by means of welding connections such that a compartment closed for liquid is formed between them, wherein at least one of the layers is vapour-transmitting over at least a portion of its surface area.
  • Similar cooling elements with a welded construction are known, for example, from the UK Patent Application GB 2 348 796 A, in which document a personal cooling garment has an inner layer and outer layer defining a confined space or bladder therebetween for containing liquid water.
  • the layers are thin materials impermeable to both air and liquid water yet permeable to water vapour.
  • Cooling elements with a multi-layer construction are used, for example, in bottle holders, bags or rucksacks in order to keep objects cool, such as bottles containing beverages. Sometimes such a cooling element is used for keeping parts of a human body, such as a damaged bundle of muscles, relatively cool.
  • the cooling effect is derived from the evaporation of water, for which a supply of heat is required. Since the arising vapour is discharged through the moisture- transmitting foil material, the evaporation may continue as long as any moisture is present in the liquid-absorbing, vapour-releasing material.
  • Constructions are further known from the clothing industry comprising three layers of material, of which two layers enclose a third, liquid-absorbing layer.
  • Such sandwich constructions are not designed to provide a cooling effect but, for example, an aesthetic effect or heat insulation.
  • the liquid-absorbing property is indeed an incidental characteristic in such a sandwich construction.
  • the invention offers a cooling element as defined in claim 1.
  • thermoplastic plastic in particular polyurethane, polypropylene or polyethylene
  • weldability e.g. by ultrasonic welding
  • the foil layers were either made of weldable materials having a lower vapour- transmittance, or were not weldable and were glued or stitched together.
  • Glued and stitched connections are unfavourable, because they show leaks, immediately, or after some time.
  • a glued connection also requires a curing period during manufacture, which causes the overall production process to take much longer than in the case of a welded connection.
  • connection between the two layers of foil material is achieved by means of welding on the other hand, the connection will be mechanically reliable, leak-proof, and ready substantially immediately after the actual welding operation, so that the cooling element can receive its finishing treatment immediately afterwards.
  • the two layers of foil material comprise a plastic with a moisture-vapour transmittance of more than 3800 g/m2/24h, in particular 4000 g/m2/24h, according to the testing norm ASTM E96-BW, at a water resistance of a water column of at least 4700 mm, in particular 5000 mm, according to the testing norm ISO 811.
  • the layers of foil material comprise a plastic of welding tear resistance of at least 15 kg/3cm, in particular 20 kg/3cm, (at 3.175 mm RF tear), a value determined according to the testing norm FS191A method 5970.
  • the latter manner has the advantage that the cooling element can be manufactured more easily because it is no longer necessary to bring the intermediate layer into the correct fitting shape beforehand.
  • the intermediate layer is simply inserted between two foil layers, whereupon the welded seams are applied in any location as desired.
  • additional welded connections are provided between said layers of foil material within the circumference of said compartment. This keeps the foil materials better together than if only the edges necessary for forming a compartment are welded together.
  • the additional welded connections make the overall assembly stronger and prevent the intermediate layer becoming folded or crumpled, whereby it would no longer extend over the entire surface area.
  • the welded connections - additional or not - are rounded at their corners and/or ends. This leads to fewer stress concentrations in the foil material adjacent the rounded welded connections, so that the formation of tears upon deformation of the cooling element during the use thereof is counteracted.
  • an additional layer of weldable foil material is applied between or against said two layers of weldable material at the area of at least one of the welded connections. This layer compensates for the loss of thickness that arises owing to the welding and compression process, the advantages being that a local weakening is counteracted and a more attractive appearance is obtained.
  • a protective layer of moisture-transmitting material is provided against the at least one layer of vapour-transmitting foil material by means of a welded joint at the side thereof that faces away from the intermediate layer.
  • the invention further relates to a cooling element comprising two layers of foil material, between which layers an intermediate layer of liquid-absorbing, vapour-releasing material is accommodated, said two layers of foil material being fastened to one another by means of connections such that a compartment is formed between them, while at least one of said layers of foil material is vapour-transmitting over at least a portion of its surface area, characterized in that said compartment is in liquid communication with a buffer reservoir via at least one flow restriction.
  • the buffer reservoir has a maximal volume essentially equal to the liquid volume of the liquid absorbing vapour-releasing material when this material is saturated with liquid. As such, it will help to obtain precisely one filling of the liquid-absorbing vapour- releasing material, typically a wick, without making the cooling element thicker than necessary to fill the wick. If more water would be added, water pockets could arise, in certain constructive variants of the cooling element.
  • the welds and fixed wicks of some embodiments mentioned above cooperate with the described size of the buffer reservoir to provide optimal cooling effect.
  • the buffer reservoir has a larger content, suited to maintain the cooling function of the compartment during essentially longer time period than the maximal liquid volume of the liquid absorbing vapour- releasing material does when this material is saturated with liquid. This advantageously provides the cooling function for a longer time.
  • the welds and fixed wicks of some embodiments mentioned above may be used to optimize the cooling effect itself.
  • the flow restriction may be realized as an opening between two welding seams that are in line, in which the head ends of said seams adjacent to the flow restriction are rounded.
  • the invention relates to a cooling element according to one of the claims 1-10 and one of the claims 11- 15.
  • a cooling element combines the advantages of both claims.
  • the advantages of the foils being made of thermoplastic plastic also apply to the buffer reservoir and the flow restrictions, which may be produced in one and the same low-cost welding cycle.
  • Figure 1 is a plan view of a cooling element according to the invention.
  • Figure 2 is a cross-sectional view taken on the line A- A of the cooling element of figure 1.
  • the cooling element shown in figure 1 comprises two layers of foil material 1 and 2 between which an intermediate layer 3 of a liquid-absorbing, vapour-releasing material is arranged.
  • the two layers of foil material 1 and 2 are fastened to one another by means of welded connections 4 such that a compartment 5 is formed between the two layers of foil material 1 and 2 and the welded connections 4.
  • the layer 2 of foil material transmits no liquid but does transmit vapour.
  • the layer 1 of foil material blocks both liquid and vapour in this example, but it may be vapour-transmitting in an alternative embodiment.
  • the layers of foil material 1 and 2 are made from thermoplastic polyurethane, a weldable thermoplastic plastic, and are welded at the areas of the elongate fusion seams 4 together with the intermediate layer of material 3.
  • the two layers of foil material comprise a plastic with a moisture-vapour transmittency of more than 3800 g/m2/24h, in particular 4000 g/m2/24h, according to the testing norm ASTM E96-BW, at a water resistence of a water column of at least 4700 mm according to the testing norm ISO 811.
  • the two layers of foil material have a welding tear resistance of at least 15 kg/3cm (3.175 mm RF tear), in particular 20 kg/3cm, determined according to the testing norm FS191A method 5970.
  • the intermediate layer 3 is also formed from a weldable material, in the present case comprising thin threads formed into a sponge-like layer.
  • the intermediate layer is compressed and welded together at the areas of the welded seams 4 such that it has become very thin and the layers of foil material 1 and 2 are substantially in contact with one another, as is clearly shown in figure 2.
  • the intermediate layer is formed from woven natural cotton and is interrupted at the areas of the seams.
  • the layers of foil material 1 and 2 extend beyond the fusion seams 4 to outside the compartment 5 so as to form a circumferential edge 6 that can be used for sewing the cooling element to an object to be cooled, a rucksack in this example.
  • Figure 1 also shows further welded connections 7 provided between said layers of foil material within the circumference of said compartment. These welded connections ensure in particular that the layers of foil material 1 and 2 and the intermediate layer 3 stay close together, which makes for an easier handling of the cooling element and renders it less vulnerable.
  • the welded connections 4 and 7 are rounded at some of their corners and ends. It is prevented thereby that stress concentrations and eventually tears will arise when the cooling element is bent, as happens in normal use of a rucksack .
  • the compartment 5 adjoins a buffer reservoir 8 which is also formed between welded seams 4 and layers of foil material 1 and 2 but which does not comprise an intermediate layer 3.
  • the buffer reservoir 8 has a round fill opening 10 that is provided with an external screw-thread (not shown) , on which screw-thread a closing cap (also not shown) can be turned so as to close off the reservoir 8 in a liquid-tight manner.
  • the fill opening 10 is welded by an edge 11 thereof to the layer of foil material 2.
  • Three flow restrictions 9 in the form of interrupt ⁇ ions in the welded seam 4 are provided between the buffer reservoir 8 and the compartment 5.
  • the flow restrictions 9 have dimensions so narrow that they limit the flow through them and thus prevent the buffer reservoir from emptying itself instantly substantially completely into the compartment 5. This emptying is also counteracted by the presence of the additional welded seams 7 mentioned above, which ensure that the volume of the compartment 5 is limited such that no fresh liquid is admitted until after liquid has evaporated through the layer of foil material 2.
  • the buffer reservoir serves as a functional buffer, since it has a maximal volume more much higher than the liquid volume of the intermediate layer 3 when this layer is saturated with liquid.
  • it will serve as a filling buffer, when its volume is more or less equal to the liquid volume of the intermediate layer.
  • a buffer reservoir is provided that is connected to the compartment 5 by means of a tube that serves as a flow restriction, and wherein the reservoir is not made as a single whole with the compartment but as two distinct units.
  • the intermediate layer of liquid-absorbing, vapour- releasing material 3 in this embodiment is at the same time an inhibitor to fungal and bacterial growth in that it has been impregnated with a liquid which after drying forms a covering layer that protects against the growth of fungi and bacteria .
  • the operation of the embodiment described is based on the evaporation of liquid from the intermediate layer 3 in the compartment 5 owing to the supply of heat through the layer of foil material 1 and the discharge of the moisture arising from said evaporation through the layer of foil material 2.
  • Fresh liquid is supplied from the buffer reservoir 8 through the openings in the welded seam 4 that serve as a flow restriction 9.
  • the buffer reservoir 8 is filled up, if necessary, through the closable fill opening 10 provided therein.
  • a protective layer of moisture- transmitting material may be provided over the layer of vapour-transmitting foil material 2 at the side thereof facing away from the intermediate layer and be connected thereto by means of a welded joint or by lamination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Laminated Bodies (AREA)

Abstract

Elément de refroidissement comprenant deux couches de matériau en feuille (1,2) jointes l'une à l'autre par des raccords à souder (14) de façon à former entre elles un compartiment fermé (5) destiné à recevoir un liquide, une des couches au moins transmettant la vapeur sur au moins une partie de sa surface. Les deux couches de matériau en feuille comprennent un plastique thermoplastique, en particulier, un polyuréthanne, un polypropylène ou un polyéthylène. En variante, ou en plus, les deux couches de matériau en feuille comprennent un matériau apte au soudage au moins sur les côtés se faisant face, et lesdits raccords sont formés par soudure. Les couches de matériau en feuille et la couche intermédiaire peuvent être fabriquées à partir de plastiques thermoplastiques.
PCT/NL2011/050520 2010-07-16 2011-07-15 Elément de refroidissement Ceased WO2012008840A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MX2014000680A MX2014000680A (es) 2011-07-15 2011-07-15 Elemento refrigerante.
PCT/NL2011/050520 WO2012008840A2 (fr) 2010-07-16 2011-07-15 Elément de refroidissement
US14/232,802 US20140137596A1 (en) 2011-07-15 2011-07-15 Cooling element
CN201180072253.4A CN103975205B (zh) 2011-07-15 2011-07-15 冷却元件
EP11736201.2A EP2732223A2 (fr) 2011-07-15 2011-07-15 Elément de refroidissement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NLNL-2005097 2010-07-16
PCT/NL2011/050520 WO2012008840A2 (fr) 2010-07-16 2011-07-15 Elément de refroidissement

Publications (2)

Publication Number Publication Date
WO2012008840A2 true WO2012008840A2 (fr) 2012-01-19
WO2012008840A3 WO2012008840A3 (fr) 2014-04-10

Family

ID=50435611

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2011/050520 Ceased WO2012008840A2 (fr) 2010-07-16 2011-07-15 Elément de refroidissement

Country Status (5)

Country Link
US (1) US20140137596A1 (fr)
EP (1) EP2732223A2 (fr)
CN (1) CN103975205B (fr)
MX (1) MX2014000680A (fr)
WO (1) WO2012008840A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12011057B2 (en) 2020-01-13 2024-06-18 Msa Technology, Llc Safety helmet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348796A (en) 1999-04-12 2000-10-18 Mustang Survival Corp Personal cooling garment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458560B1 (fr) * 1990-05-21 1994-10-26 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Elément de protection contre la chaleur
GB9719205D0 (en) * 1997-09-10 1997-11-12 Spink Andrew D Breatheable waterproof garment construction
US6473910B2 (en) * 2000-12-20 2002-11-05 Kimberly-Clark Worldwide, Inc. Cooling garment
GB2418727B (en) * 2002-08-02 2007-01-10 Carglass Luxembourg Sarl Zug Cooler structure for surface cooling
US7028344B2 (en) * 2003-05-14 2006-04-18 Toth Gregory T Systems and methods for providing a headgear cooling liner
JP3814598B2 (ja) * 2003-10-02 2006-08-30 キヤノン株式会社 温度調整装置、露光装置及びデバイス製造方法
US7866177B2 (en) * 2004-02-05 2011-01-11 Unico Swiss Tex Gmbh Personal cooling element, in particular for patients

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348796A (en) 1999-04-12 2000-10-18 Mustang Survival Corp Personal cooling garment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12011057B2 (en) 2020-01-13 2024-06-18 Msa Technology, Llc Safety helmet

Also Published As

Publication number Publication date
WO2012008840A3 (fr) 2014-04-10
CN103975205A (zh) 2014-08-06
EP2732223A2 (fr) 2014-05-21
MX2014000680A (es) 2014-11-26
CN103975205B (zh) 2016-06-22
US20140137596A1 (en) 2014-05-22

Similar Documents

Publication Publication Date Title
KR101770171B1 (ko) 기체 쿠션재가 상자형으로 연결되는 텐트
US3700018A (en) Semirigid container
US20150360839A1 (en) Flexible pouch with pressure relief valve
WO2017042905A1 (fr) Contenant en matériau en feuilles
SI9520060A (en) Bag made of polymer and especially polyolefine fabric and process for producing it
MXPA01007472A (es) Bolsas de gran capacidad con paredes de multiples pliegues y metodo para formar las mismas a partir de una pieza preliminar tubular.
KR20140132095A (ko) 냉장,냉동 식품 포장용 백 및 그 제조방법
EP4201832A1 (fr) Sac d'emballage et utilisation du sac d'emballage
US20130193138A1 (en) Container and Method for Producing a Container
US20140137596A1 (en) Cooling element
CA2598153A1 (fr) Contenants a trois parois et methode de fabrication
US20170259991A1 (en) Design and method of fabrication of collapsible storage tank
US8272782B2 (en) Plastic film bag to increase load bearing capacity
KR101458084B1 (ko) 발효식품용 포장지
KR20120128906A (ko) 음식물 밀봉 포장 봉투
JP6786852B2 (ja) パウチ
JP4142775B2 (ja) 粒状物用袋、及びその製造方法
MX2008013093A (es) Bolsa acartelada.
CN206187699U (zh) 一种定位泄气的微波包装袋
KR101558170B1 (ko) 손잡이 벌어짐 방지수단이 구비된 냉장,냉동 식품 포장용 백
NL2005097C2 (nl) Koelelement.
JP2008138908A (ja) 加熱剤、加熱剤の製造方法及び加熱機能付き食品容器
JP2010519144A (ja) 加圧ボトル用ポーチ
KR101098868B1 (ko) 음식물 밀봉 포장 봉투
ES1274839U (es) Laminado y tubular continuo para la formacion de bolsas y bolsa para productos alimenticios

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11736201

Country of ref document: EP

Kind code of ref document: A2

WPC Withdrawal of priority claims after completion of the technical preparations for international publication

Ref document number: NL-2005097

Country of ref document: NL

Date of ref document: 20121219

Free format text: WITHDRAWN AFTER TECHNICAL PREPARATION FINISHED

122 Ep: pct application non-entry in european phase

Ref document number: 11736201

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2011736201

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 14232802

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: MX/A/2014/000680

Country of ref document: MX