EP2146604A1 - Behälter für heissgetränke - Google Patents

Behälter für heissgetränke

Info

Publication number
EP2146604A1
EP2146604A1 EP08718592A EP08718592A EP2146604A1 EP 2146604 A1 EP2146604 A1 EP 2146604A1 EP 08718592 A EP08718592 A EP 08718592A EP 08718592 A EP08718592 A EP 08718592A EP 2146604 A1 EP2146604 A1 EP 2146604A1
Authority
EP
European Patent Office
Prior art keywords
phase change
change material
inner vessel
lid
beverage
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.)
Withdrawn
Application number
EP08718592A
Other languages
English (en)
French (fr)
Inventor
Richard John Birkett
Michael John Hale
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.)
Individual
Original Assignee
Individual
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 GB0704271A external-priority patent/GB2447234B/en
Priority claimed from GB0723652A external-priority patent/GB0723652D0/en
Application filed by Individual filed Critical Individual
Publication of EP2146604A1 publication Critical patent/EP2146604A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • B65D81/3874Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers formed of different materials, e.g. laminated or foam filling between walls
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00Table service
    • A47G19/22Drinking vessels or saucers used for table service
    • A47G19/2288Drinking vessels or saucers used for table service with means for keeping liquid cool or hot
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • B65D81/3872Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers provided with liquid material between double walls
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-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
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/06Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C09K5/063Materials absorbing or liberating heat during crystallisation; Heat storage materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2231/00Means for facilitating the complete expelling of the contents
    • B65D2231/02Precut holes or weakened zones
    • B65D2231/022Precut holes or weakened zones for permitting the insertion of a tubular contents-removing device, e.g. a drinking straw
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Definitions

  • This invention relates to receptacles/containers particularly adapted for controlling the temperature of food or beverages therein, such as coffee, tea, soup and the like.
  • a hot beverage may be made directly in a cup or mug, by the addition of very hot water at temperatures of 80 to 100 0 C, or it may be dispensed or poured from a brewing device where the beverage has been maintained at a temperature of 8O 0 C or more. These temperatures are typically too hot for safe or comfortable consumption, and may even present a burn or scald hazard if consumed injudiciously, or spilled accidentally. In a conventional non-insulated container the beverage will cool within a few minutes to a temperature safe and comfortable for consumption.
  • the present invention provides a hot beverage receptacle, such as a cup or mug, comprising: (i) an inner vessel with an upper open end, a closed lower end and a wall connecting the upper and 'lower end; (ii) an insulated outer shell; (iii) a compartment disposed between the inner vessel and the outer shell comprising a phase change material for absorbing thermal energy from a hot beverage in the inner vessel to cool the hot beverage and then releasing the thermal energy to the beverage to maintain the temperature of the cooled beverage; and (iv) a lid for the open end of the vessel, which Hd comprises a phase change material in the base of the lid, and an insulating layer.
  • the present invention provides a hot beverage receptacle, such as a cup or mug, comprising: (i) an inner vessel with an upper open end, a closed lower end and a wall connecting the upper and lower end; (ii) an insulated outer shell; (iii) a compartment disposed between the inner vessel and the outer shell comprising a phase change material for absorbing thermal energy from a hot beverage in the inner vessel to cool the hot beverage and then releasing the thermal energy to the beverage to maintain the temperature of the cooled beverage; and (iv) a lid for the open end of the vessel, which lid comprises a compartment comprising a phase change material for inducing evaporation from the upper surface of the liquid, and an insulating layer.
  • a hot beverage receptacle such as a cup or mug, comprising: (i) an inner vessel with an upper open end, a closed lower end and a wall connecting the upper and lower end; (ii) an insulated outer shell; (iii) a compartment disposed between the inner
  • the present invention also provides a hot beverage receptacle, such as a cup or mug, for rapidly lowering the temperature of a hot beverage contained therein to a temperature suitable for human consumption and maintaining the beverage within a warm temperature range for an extended period of time, the receptacle comprising: (i) an inner vessel with an upper open end, a closed lower end and a wall connecting the upper and lower end; (ii) an insulated outer shell; (iii) a compartment disposed between the inner vessel and the outer shell comprising a phase change material for absorbing thermal energy from a hot beverage in the inner vessel to cool the hot beverage and then releasing the thermal energy to the beverage to maintain the temperature of the cooled beverage; and (iv) a lid for the open end of the vessel, which lid comprises a phase change material in the base of the lid, and an insulating layer.
  • a hot beverage receptacle such as a cup or mug
  • the present invention provides a hot beverage receptacle, such as a cup or mug, for rapidly lowering the temperature of a hot beverage contained therein to a temperature suitable for human consumption and maintaining the beverage within a warm temperature range for an extended period of time, the receptacle comprising: (i) an inner vessel with an upper open end, a closed lower end and a wall connecting the upper and lower end; (ii) an insulated outer shell; (iii) a compartment disposed between the inner vessel and the outer shell comprising a phase change material for absorbing thermal energy from a hot beverage in the inner vessel to cool the hot beverage and then releasing the thermal energy to the beverage to maintain the temperature of the cooled beverage; and (iv) a lid for the open end of the vessel, which lid comprises a compartment comprising a phase change material for inducing evaporation from the upper surface of the liquid, and an insulating layer.
  • phase change material it is not necessary of the phase change material to be present throughout the walls of the receptacle: it need only be present in the upper portion.
  • phase change material can represent a substantial part of the cost of manufacturing the receptacle, this finding enables significant cost reductions compared with the prior art.
  • This aspect of the invention can be applied to a wide range of receptacles, including those used to serve food. Accordingly in this aspect the receptacle is termed a 'container' to distinguish this aspect from the first aspect.
  • the present invention also provides a container for hot food and drinks comprising:
  • a compartment disposed between the inner vessel and the outer shell comprising a phase change material for absorbing thermal energy from a hot foodstuff or drink in the inner vessel to cool the hot foodstuff or drink and then releasing the thermal energy to the foodstuff or drink to maintain the temperature of the cooled foodstuff or drink, wherein the compartment and the phase change material extend around the upper portion of the inner vessel only; and (iv) a lid for the open end of the vessel, which lid comprises a compartment comprising a phase change material in the base of the lid, and an insulating layer.
  • the phase change material is in thermal contact with at least the upper third of the outer surface of the wall(s) of the inner vessel.
  • the phase change material is in thermal contact with at least 40% of the outer surface of the wall(s) of the inner vessel.
  • the present invention provides a container for rapidly lowering the temperature of a hot foodstuff or drink contained therein to a temperature suitable for human consumption and maintaining the foodstuff or drink within a warm temperature range for an extended period of time, the container comprising:
  • a compartment disposed between the inner vessel and the outer shell comprising a phase change material for absorbing thermal energy from a hot foodstuff or drink in the inner vessel to cool the hot foodstuff or drink and then releasing the thermal energy to the foodstuff or drink to maintain the temperature of the cooled foodstuff or drink, wherein the compartment and the phase change material extend around the upper portion of the inner vessel only; and (iv) a lid for the open end of the vessel, which lid comprises a phase change material in the base of the lid, and an insulating layer.
  • the phase change material is in thermal contact with at least the upper third of the outer surface of the wall(s) of the inner vessel.
  • the phase change material is in thermal contact with at least 40% of the outer surface of the wall(s) of the inner vessel.
  • Figure 1 - shows a cross section of a receptacle/container of the invention.
  • Figure 2 - shows various views of a particular embodiment of a body of a receptacle/container of the invention.
  • Figure 3 - shows cooling temperature profiles of several of the receptacles described in the text: 1) a receptacle with insulation only (non PCM), typical of containers available commercially, 2) a receptacle with insulation and PCM, typical of those described in the prior art, showing the differential temperature between upper and lower liquid regions, 3) a receptacle and lid with insulation and PCM, as described in the invention, showing no differential temperature between upper and lower liquid regions.
  • non PCM non PCM
  • the receptacles of the present invention are designed to hold hot beverages.
  • the term "beverage” means liquids and semi-liquids. Foodstuffs such as porridge, casseroles, gravy and pureed baby food are therefore excluded from this definition.
  • Liquids include mulled wine, tea, coffee, hot chocolate, OvaltineTM and the like.
  • Semi-liquids include soup, or instant noodles with sauce, which contain solid components in a liquid, but which can still be drunk.
  • the viscosity of the beverage is typically less than 10,000 cP (10 Pa.s), preferably less than 5,000 or 1 ,000 cP (5 or 1 Pa. s), such as less than 100 cP (0.1 Pa.s). Viscosity values are measured at 25 0 C, 1 atm.
  • the receptacle is used to hold liquids and semi-liquids having a free liquid content of at least 20% w/w, such as at least 30, 40 or 50 % w/w.
  • free liquid refers to liquid that can be separated from the solid components, i.e. if the contents are poured through a standard domestic sieve with 1 mm aperture, the free liquid would be the liquid passing through the sieve.
  • the receptacles of the present invention are designed to hold beverages for direct consumption from the receptacle by an individual. Such receptacles therefore are generally in the form of a cup or a mug. Flasks and other receptacles which are only designed to hold the beverage, with the beverage being dispensed into another vessel for consumption, are specifically excluded as receptacles of the present invention, but are not excluded from the definition of containers as referred to in other aspects of the invention.
  • the receptacle is specifically adapted to enable the beverage to be consumed from the receptacle when the lid is on, e.g. the lid contains an opening as described below.
  • the receptacle has a volume of less than 1 litre, such as from 200 to 750 ml.
  • the containers of the present invention are designed to hold hot foodstuffs and drinks.
  • foodstuff or drink includes liquids, such as mulled wine, tea, coffee, hot chocolate, OvaltineTM and the like; semi-liquids, such as soup, or instant noodles with sauce, which contain solid components in a liquid; as well as foodstuffs of relatively high viscosity, such as porridge, casseroles, gravy and pureed baby food.
  • the viscosity of the foodstuff or drink is typically less than 10,000 cP (10 Pa.s), preferably less than 5,000 or 1 ,000 cP (5 or 1 Pa.s), such as less than 100 cP (0.1 Pa.s). Viscosity values are measured at 25 0 C, 1 atm. It is preferred that the container is used to hold liquids and semi-liquids having a free liquid content of at least 20% w/w, such as at least 30, 40 or 50 % w/w.
  • free liquid refers to liquid that can be separated from the solid components, i.e. if the contents are poured through a standard domestic sieve with 1 mm aperture, the free liquid would be the liquid passing through the sieve.
  • the containers of the present invention are designed to hold hot foodstuffs and drinks for direct consumption from the container by an individual, as described for receptacles above.
  • Such containers therefore are generally in the form of a cup or a mug.
  • the container has a volume of less than 1 litre, such as from 200 to 750 ml.
  • the containers of the present invention are designed to hold larger quantities of hot foodstuffs and drinks for consumption by a number of individuals.
  • the containers may therefore be in the form of gravy/sauce boats, jugs and the like.
  • the volume of such containers is preferably less than 2 litres.
  • the receptacle has two main parts: a body (1) that holds the consumable contents, and a lid (2).
  • the body comprises an inner vessel (11), which in use holds the consumable contents.
  • the inner vessel typically has a wall (12) or walls, a top and a bottom, otherwise expressed as an upper end and a closed lower end.
  • the body has an opening (13) through which the beverage can be placed in the vessel, and through which the beverage can be displaced or consumed.
  • the opening is in the upper end but it could also be in an upper portion of the wall.
  • the inner vessel can, for example, be made from plastic, such as high impact polystyrene (HIPS) or metal, such as stainless steel, aluminium, aluminium alloys, copper or copper alloys.
  • HIPS high impact polystyrene
  • metal such as stainless steel, aluminium, aluminium alloys, copper or copper alloys.
  • the inner vessel is made from a material having a conductivity of greater than 5 or 10 VWmK - stainless steel has a conductivity of 16 VWmK.
  • the body may comprise one or more handles to enable a user to grip the body.
  • a version suitable for a child may, for example, have two handles.
  • the body also includes an insulated outer shell (14).
  • Any suitable insulating material can be used, such as expanded polyurethane, polyethylene or polystyrene.
  • the insulating material may also be a vacuum, or an aerogel.
  • the insulating material can also be a closed-cell foam or an open-cell foam.
  • the layer of insulating material may be of any suitable thickness, such as from 1 to 6 mm, e.g. from 2 to 5 mm.
  • the insulating material is resiliently deformable so as to accommodate changes in the volume of the phase change material described below.
  • the insulating material may form the outermost layer of the receptacle or it may be disposed between the outermost layer (15) (such as an outermost layer of high impact polystyrene (HIPS) or stainless steel), termed the outer casing, and the inner vessel, as shown in figure 1.
  • the insulating layer preferably surrounds the entire inner vessel.
  • the body also includes a compartment (16) disposed between the inner vessel and the outer shell comprising a phase change material (17), such that the phase change material is in thermal contact with the wall of the inner vessel.
  • the phase change material absorbs thermal energy from the hot beverage in the inner vessel to cool the beverage and then releases the thermal energy to the beverage to maintain the temperature of the cooled beverage.
  • the compartment, and therefore the phase change material may surround substantially the entire inner vessel, i.e. the walls and bottom of the inner vessel.
  • the compartment, and therefore the phase change material may only partially surround the inner vessel (as shown in figure 1).
  • the phase change material may only surround the upper portion of the inner vessel, such as only the upper third of the inner vessel or the uppermost 60, 50, 40 or 30% of the inner vessel.
  • the phase change material is in thermal contact with at least 30, 40, 50 or 60% of the outer surface of the wall(s) of the inner vessel.
  • the phase change material is in thermal contact with at least the upper third of the wall(s) of the inner vessel, such as the upper two thirds.
  • the phase change material only partially surrounds the inner vessel (as shown in figure 1). Specifically, the phase change material only surrounds the uppermost portion of the inner vessel and not the lower portion. The inventors have found that this enables a reduction in the amount of phase change material required with little to no loss in function.
  • phase change material only surrounds the upper third of the inner vessel or the uppermost 60, 50, 40 or 30% of the inner vessel.
  • the phase change material is in thermal contact with at least 30, 40, 50 or 60% of the outer surface of the wall(s) of the inner vessel.
  • phase change materials examples include waxes (e.g. beeswax, paraffin wax), fatty acids (stearic acid, palmitic acid and myristic acids), fats, heavy alcohols
  • waxes e.g. beeswax, paraffin wax
  • fatty acids stearic acid, palmitic acid and myristic acids
  • fats heavy alcohols
  • phase change materials have a phase change temperature of from 45 to 75 0 C, such as from 50 to 7O 0 C, or 50 to 65 0 C. Phase change materials are preferably food grade.
  • phase change materials can also be used.
  • a mixture is used of one or more crystalline salts, such as sodium acetate trihydrate, and one or more waxes, so that the wax melts preferentially and acts as a thermal transfer medium to the crystalline solid.
  • the v/v ratio of the salt(s) to the wax(es) is preferably at least 2:1 , more preferably at least 4:1.
  • the v/v ratio of the wax(es) to the salt(s) may be less than 1 :1 , such as less than 1:2.
  • phase change material includes one or more crystalline salts
  • phase change material includes one or more crystalline salts
  • additive thickener materials such as polyvinyl alcohols, paraffins, and either acetone or formaldehyde (see Wada et al. US 4,561 ,989) to optimise phase change behaviour and make it more consistent over multiple cycles.
  • the compartment in which the phase change material is held is a single continuous compartment.
  • the phase change material is held in a plurality of compartments. This is so that if one compartment ruptures, especially on the side in contact with the inner vessel and therefore the contents of the inner vessel, the amount of phase change material released into the contents of the container is reduced.
  • Compartmentalisation can, for example, be achieved by providing ribs, typically in a substantially horizontal and/or substantially vertical orientation, as shown in figure 2 where vertical ribs (20) are provided.
  • the insulating material is a closed-cell foam is to use this same material to form the compartmentalising ribs.
  • the receptacle of the present invention also includes a lid (2), which fits the open end of the inner vessel.
  • the lid (2) comprises a phase change material (21) in the base of the lid (22), and an insulating layer (23).
  • the materials used as the phase change material and insulating layer are typically as described above.
  • the insulating layer (22) is uppermost, i.e. is external to the phase change material (21).
  • the phase change material (21) is therefore nearer to, and in thermal contact with, the inner vessel (11). In this way, heat transferred by evaporation will be transferred to the phase change material via contact with the underside of the lid.
  • the phase change material will typically be held in a compartment in the base of the lid in a similar fashion as is described above in relation to the body.
  • the lid may include a gasket or seal, such as a rubber ring (24), to provide a tight fit between the lid and the inner vessel.
  • a gasket or seal such as a rubber ring (24)
  • the lid may include a screw thread which engages with a screw thread of the body of the container.
  • the lid includes an opening through which the beverage can be consumed.
  • the opening may, for example, be a shaped spout, optionally fitted with a cover, which may slidingly engage to seal or open the spout.
  • the opening may be of suitable dimensions to allow a straw or similar article to be inserted into the opening and thus into the contents of the inner vessel.
  • the receptacle of the invention is used to rapidly lower the temperature of a hot beverage (or drink or foodstuff as appropriate in the case of a container of the invention) contained therein to a temperature suitable for human consumption and maintain the beverage within a warm temperature range for an extended period of time.
  • the receptacle is capable of lowering the temperature of a hot beverage (or drink or foodstuff as appropriate) from 9O 0 C to 7O 0 C at the top of the beverage in less than 30 minutes, more preferably less than 20 or 15 minutes.
  • “At the top of the beverage” means in the top 1 cm of the beverage.
  • a warm temperature range is generally the temperature range at which a hot beverage is considered comfortable to humans to consume.
  • Preferably said warm temperature range is from about 45 0 C to about 75 0 C, such as from about 5O 0 C to about 7O 0 C (see HS Lee and M O'Mahony, J. Food Science, 67(7), 2002, 277 '4-277 '4 and references therein).
  • the preferred temperature range may be lower, such as from about 45 0 C to about 6O 0 C.
  • said extended period of time is at least 60 minutes, preferably at least 90, 100, 110 or 120 minutes.
  • the first prototypes were constructed from inner and outer, high impact polystyrene (HIPS) mouldings, enclosing a 4mm thick expanded polystyrene insulation layer with 2mm clearance between the insulation and inner casing. For the control this was simply left as an air filled gap, whereas, for the experimental samples, it contained the phase change material (PCM), sodium acetate.
  • HIPS high impact polystyrene
  • PCM phase change material
  • the inner vessel of the prototypes was filled with a liquid at a temperature of 90°C. Spot temperature measurements were then taken, with a single probe thermometer, every minute after stirring the contents, yielding a bulk representative value with no spatial variation. Two arbitrary parameters were specified to quantify performance. Pull-down rate was defined as the time taken for the hot liquid to reach a drinkable temperature, defined as 70 0 C. Consumption time was the duration that the liquid remains in the acceptable, warm, temperature range, with the lower threshold defined as 50°C
  • Cooler liquid being denser than that at higher temperature, will fall under gravity to the bottom of the receptacle, displacing hotter fluid which is forced upwards. Because the heat from the top surface is effectively trapped by the lid insulation above it, the headspace and bottom surface of the lid is at virtually the same temperature as the top surface of the contents. Therefore there is practically no temperature gradient to induce evaporative cooling, and heat losses are largely conduction limited.
  • the proposed solution to this problem was to provide PCM material in the base of the lid, anticipating that vapour evaporated from the top surface of the fluid would condense on the bottom surface of the lid, and the latent heat of vaporisation released would be absorbed by the latent heat of fusion as the PCM melted without an increase in temperature.
  • the under surface of the lid would be held at a substantially lower temperature than the fluid surface, establishing a temperature gradient across the headspace that would maintain evaporative cooling over a prolonged period.
  • Prototype lids were constructed with a metal cup forming the base, and filled with 15ml of PCM with 5mm of polyurethane insulation above it. Repeat cooling trials were carried out and the pull-down times for the top surface of the liquid were reduced from, typically, 21 minutes to 10 (Key Stage 4) (see results table 1 , below). Consumption times were also reduced from around 2 hours 15 minutes to about 1hour 50 minutes, but this was not considered to be a major impairment of the overall performance.
EP08718592A 2007-03-06 2008-03-03 Behälter für heissgetränke Withdrawn EP2146604A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0704271A GB2447234B (en) 2007-03-06 2007-03-06 Hot food and drink receptable
GB0723652A GB0723652D0 (en) 2007-12-04 2007-12-04 Hot beverage receptacle
PCT/GB2008/000715 WO2008107657A1 (en) 2007-03-06 2008-03-03 Hot beverage receptacle

Publications (1)

Publication Number Publication Date
EP2146604A1 true EP2146604A1 (de) 2010-01-27

Family

ID=39322558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08718592A Withdrawn EP2146604A1 (de) 2007-03-06 2008-03-03 Behälter für heissgetränke

Country Status (2)

Country Link
EP (1) EP2146604A1 (de)
WO (1) WO2008107657A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2218361T3 (es) 2001-01-30 2004-11-16 Seda S.P.A. Envase de carton para bebidas y su procedimiento.
BRPI0601188B1 (pt) 2005-04-15 2018-06-26 Seda S.P.A. Recipiente isolado; método de fabricar o mesmo e aparelho para a fabricação
DE202005014177U1 (de) 2005-09-08 2005-11-17 Seda S.P.A., Arzano Doppelwandiger Becher
DE202005014738U1 (de) 2005-09-19 2007-02-08 Seda S.P.A., Arzano Behälter und Zuschnitt
PL1785370T5 (pl) 2005-11-11 2014-06-30 Seda Spa Izolowany kubek
EP1785265A1 (de) 2005-11-14 2007-05-16 SEDA S.p.A. Vorrichtung zur Ausformung eine Stapelwulst an einer Behälterwand und Behälter mit derselben
DE202006018406U1 (de) 2006-12-05 2008-04-10 Seda S.P.A. Verpackung
DE102013114507B3 (de) * 2013-12-19 2015-02-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Behälter mit einer Mischung aus Phasenwechselmaterial und Graphitpulver
FR3040212B1 (fr) * 2015-08-20 2020-01-24 Hutchinson Ensemble isolant thermique et structure isolee par cet ensemble
CN205410700U (zh) * 2015-12-22 2016-08-03 征茂德 一种快速调改温度的健康容器
CN106618079A (zh) * 2017-02-24 2017-05-10 董翥 一种快速加热、保温的两用杯盖及其杯子
US20220411064A1 (en) * 2019-12-04 2022-12-29 Conopco, Inc., D/B/A Unilever Container for storing and serving frozen confectionery items

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876634A (en) * 1954-12-08 1959-03-10 Hale G Zimmerman Thermodynamic container
US4460103A (en) * 1982-07-19 1984-07-17 Alvex Development Corp. Cover for drink containers
US5052369A (en) * 1985-12-13 1991-10-01 Johnson Kendrick A Heat retaining food container
US4955503A (en) * 1989-02-02 1990-09-11 Propes Michael L Partitioned drinking cup
AUPN744596A0 (en) * 1996-01-05 1996-02-01 Thermal Energy Accumulator Products Pty Ltd A food or beverage container
US6634417B1 (en) * 1997-04-07 2003-10-21 J. Bruce Kolowich Thermal receptacle with phase change material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008107657A1 *

Also Published As

Publication number Publication date
WO2008107657A1 (en) 2008-09-12

Similar Documents

Publication Publication Date Title
GB2447234A (en) Food and drink container comprising a phase change material
WO2008107657A1 (en) Hot beverage receptacle
US20130255824A1 (en) Thermal receptacle with phase change material containing insert
US4830190A (en) Heating and cooling lunch box with intake air opening
CN201005406Y (zh) 自控恒温保温杯
US20060156756A1 (en) Phase change and insulating properties container and method of use
CN106061863B (zh) 具有由相变材料和石墨粉组成的混合物的容器
US6968888B2 (en) Thermal receptacle with phase change material
US20160045047A1 (en) Container with a Thermal Regulating Insert
CN105615518A (zh) 一种可快速降温保温的温热两用保温杯
CN105982481A (zh) 一种利用相变材料对温度进行自动调控的恒温容器
CN102772132A (zh) 一种真空、储热双重保温式电热水壶
US20200037823A1 (en) Device and method for precise temperature control of beverages
CN204743561U (zh) 一种基于复合相变材料的保温杯套
JP6528892B1 (ja) 保温容器
RU93648U1 (ru) Посуда
JP2004138274A (ja) 飲料・食糧を収納する容器を加熱または冷却するための付加ケース
CN204617785U (zh) 一种便于使用的保温茶杯
CN204617756U (zh) 一种保温茶壶
JP2002039656A (ja) 飲食物保冷温器
US11213459B2 (en) Stirrer to cool or warm liquids
CN206766730U (zh) 饮料容器
CN219353548U (zh) 保温桶
CN212678866U (zh) 保温器具
US1906815A (en) Cooler

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20091113

R17P Request for examination filed (corrected)

Effective date: 20090919

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20110120

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110531