EP2800732A1 - Dispositif de chauffage activé par oxygène, poreux - Google Patents

Dispositif de chauffage activé par oxygène, poreux

Info

Publication number
EP2800732A1
EP2800732A1 EP13733815.8A EP13733815A EP2800732A1 EP 2800732 A1 EP2800732 A1 EP 2800732A1 EP 13733815 A EP13733815 A EP 13733815A EP 2800732 A1 EP2800732 A1 EP 2800732A1
Authority
EP
European Patent Office
Prior art keywords
heater
approximately
porosity
flexible substrate
oxygen
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Withdrawn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
EP13733815.8A
Other languages
German (de)
English (en)
Other versions
EP2800732A4 (fr
Inventor
Lawrence A. Tinker
Christopher Pedicini
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.)
Rechargeable Battery Corp
Original Assignee
Rechargeable Battery Corp
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 Rechargeable Battery Corp filed Critical Rechargeable Battery Corp
Publication of EP2800732A1 publication Critical patent/EP2800732A1/fr
Publication of EP2800732A4 publication Critical patent/EP2800732A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion

Definitions

  • the invention relates to a porous heater that uses oxygen (generally atmospheric oxygen) as a source of a chemical reactant for an exothermic reaction.
  • oxygen generally atmospheric oxygen
  • Portable flameless heaters are currently used in a variety of applications, such as heating comestible, medical, and consumer items.
  • Some heaters utilize the reaction of magnesium and water to produce heat. While such a heater produces a sufficient amount of heat, hydrogen gas is product of the exothermic reaction. This can generate safety, transportation, storage, and disposal concerns. In addition, the exothermic reaction requires water, which can be tiresome to constantly carry around.
  • the assignee of the present invention has provided oxygen-base heaters and various packages for same. See, e.g., U.S. Pat. No. 7,722,782, issued on May 25, 2010; U.S. Appl. Ser. No. 12/376,927, filed on February 9, 2009; U.S. Appl. Ser. No. 12/874,338, filed on September 2, 2010; U.S. Appl. Ser. No. 61/583,418, filed on January 5, 2012; U.S. Appl. Ser. No. 61/714,526, filed on October 16, 2012; U.S. Appl. Ser. No. 61/716, 226, filed on October 19, 2012; U.S. Appl. Ser. No. 61/716,279, filed on October 19, 2012; and, U.S. Appl. Ser. No. 61/716,906, filed on October 22, 2012, all of which are incorporated herein by reference.
  • the porosity of the composite heater is an important feature for providing an efficient and effective heater.
  • the present invention is directed to providing a heater that has sufficient porosity so as to be efficient and effective without compromising performance, as well as other benefits.
  • the present invention is directed towards an oxygen based heater with a wet porosity of approximately 15-35%.
  • the heater may also include a dry porosity of approximately 60%.
  • the present invention is directed towards a heater with the wet porosity of approximately 15-35% in a package.
  • the dry porosity refers to the porosity of the heater sheet before the electrolyte is introduced, and the wet porosity refers to the porosity of the sheet after electrolyte has been added.
  • the organization of the components within the heater sheet to achieve these porosity ranges is an important attribute to ensure that the heater includes the right micro -environment for the oxygen initiated reaction to occur and these porosity ranges are an indication of establishing the right microstructure.
  • the present invention is also directed at providing a heater with a wet porosity sufficient to reach a desired temperature in an acceptable amount of time.
  • Figure 1 is a graph showing the temperature after 5 minutes for various heaters according to the present invention.
  • Figure 2 is a graph showing the time it takes various heaters according to the present invention to achieve a 100 °F temperature rise (starting from a 40 °F temperature).
  • Figure 3 is a graph showing the time it takes heaters according to the present invention to reach their respective maximum temperatures.
  • Figure 4 is a side cutaway view of an embodiment of a heater according to the present invention in a package.
  • the heater also includes carbon treated with KMn0 4 as a promoter and a polytetrafluoroethylene as a binding agent that holds the chemical constituents together and allows for a flexible composite heater to be made.
  • a preferred carbon is Ketjenblack KB300J produced by AkzoNobel Polymer Chemicals, and a preferred polytetrafluoroethylene is a powdered polytetrafluoroethylene such as Laurel Product's Marzon-10.
  • the heater may also include additives to improve stability such as indium, bismuth, stannates, or silicates.
  • the composite heaters were activated with various amounts of a 20%> (by weight) potassium chloride solution and assembled into pouches.
  • the different amounts of the electrolyte solution are shown in Table 3.
  • the use of the various amounts also resulted in different wet porosities, also shown in Table 3.
  • the wet porosity is determined by calculating the free volume in the dry heater sheet, subtracting the volume of activator solution added to the sheet to determine the final free volume and then dividing by the sheet volume.
  • the parameters of the test that were measured are as follows: the temperature rise in five minutes; the time to raise the water temperature by 100 °F from an initial temperature of 40 °F; the time to reach the maximum temperature; and, the maximum temperature achieved.
  • the 140 °F desired temperature was chosen as a desired temperature because a temperature of 140 °F is a desired temperature for a comestible when heated from a cold temperature.
  • desired temperature means a temperature that is chosen and which represents a temperature sufficient to achieve the purposes of the heater (i.e., heat a comestible, boil water, melt ice, etc.).
  • Figures 1-3 illustrate the effect of wet porosity on the performance of heater pouches.
  • Fig. 1 shows the temperature rise in five minutes for various composite heaters. As shown and demonstrated by Fig. 1, the lower the porosity, the slower the temperature rise (in the initial five minutes). This indicates a lack of oxygen access to reaction sites within the composite heater. By increasing the wet porosity, it is believed there is more access to the reaction sites within the heater structure leading to a faster rate of reaction and higher temperature at five minutes.
  • Fig. 2 The effect of wet porosity on the time that it takes for a heater pouch to achieve a 100 °F temperature rise in an eight ounce water bag test is shown in Fig. 2. As shown, in the range of 15-35% wet porosity there is only a small impact on the time to 100 °F rise.
  • heater 6 may be disposed inside of package 5.
  • package 5 may be a pouch comprising first sheet 9 and second sheet 12.
  • Second sheet 12 includes a plurality of openings 14 forming oxygen access portion 11.
  • flap 8 Disposed over at least oxygen access portion 11 may be flap 8 (or other similar structure capable of selectively opening and preferably re-closing).
  • Flap 8 may include adhesive 10 to secure flap 8 over oxygen access portion 11 when the production of heat is not desired or no longer desired.
  • package 5 may include side 7 without any openings 14; however, the depicted package is merely a representative package which selectively prevents oxygen access to heater 6 to control an exothermic reaction between heater 6 and atmospheric oxygen.
  • Heater 6 is made according to the present invention, and as disclosed above, is a porous flexible substrate which includes a reducing agent, a binder, and a promoter. Heater 6 is also activated with an electrolyte solution. Furthermore, heater 6 has a wet porosity of between approximately 15-35%.
  • Such a heater will provide a sufficient amount of heat and reach the desired temperature within an acceptable amount of time, based in part, upon the porosity of the heater itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Vending Machines For Individual Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

L'invention concerne un dispositif de chauffage de substrat qui comprend au moins une porosité à l'état humide entre 15-35 % pour permettre une solution d'électrolyte et une porosité suffisantes pour l'accès d'un agent réducteur à l'intérieur du substrat et de l'oxygène.
EP13733815.8A 2012-01-05 2013-01-04 Dispositif de chauffage activé par oxygène, poreux Withdrawn EP2800732A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261583410P 2012-01-05 2012-01-05
US201261583418P 2012-01-05 2012-01-05
PCT/US2013/020353 WO2013103871A1 (fr) 2012-01-05 2013-01-04 Dispositif de chauffage activé par oxygène, poreux

Publications (2)

Publication Number Publication Date
EP2800732A1 true EP2800732A1 (fr) 2014-11-12
EP2800732A4 EP2800732A4 (fr) 2015-09-02

Family

ID=48743050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13733815.8A Withdrawn EP2800732A4 (fr) 2012-01-05 2013-01-04 Dispositif de chauffage activé par oxygène, poreux

Country Status (10)

Country Link
US (1) US20130174835A1 (fr)
EP (1) EP2800732A4 (fr)
JP (1) JP2015507166A (fr)
CN (1) CN104203873A (fr)
AU (1) AU2013207453A1 (fr)
BR (1) BR112014016626A8 (fr)
CA (1) CA2860621A1 (fr)
MX (1) MX2014008307A (fr)
WO (1) WO2013103871A1 (fr)
ZA (1) ZA201404905B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9278796B2 (en) 2014-02-17 2016-03-08 Sonoco Development, Inc. Container having self-contained heater material
US9024360B1 (en) 2014-02-17 2015-05-05 Sonoco Development, Inc. Container having self-contained heater material
US9872795B2 (en) 2014-03-12 2018-01-23 Rechargeable Battery Corporation Thermoformable medical member with heater and method of manufacturing same
US9642736B2 (en) 2014-03-12 2017-05-09 Rechargeable Battery Corporation Thermoformable splint structure with integrally associated oxygen activated heater and method of manufacturing same
US10046325B2 (en) 2015-03-27 2018-08-14 Rechargeable Battery Corporation Self-heating device for warming of biological samples
US20160286994A1 (en) * 2015-04-01 2016-10-06 Preston Keith Felty Disposable sleeve for a container
US9782946B2 (en) 2015-07-21 2017-10-10 Sonoco Development, Inc. Laminate structure with access openings
US11865036B2 (en) 2019-09-27 2024-01-09 L'oreal Integrated heater on facial skincare mask

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533958A (en) * 1946-04-23 1950-12-12 Raymond E Reed Chemical heating pad, particularly useful in permanent waving of human hair
US3301250A (en) * 1965-03-26 1967-01-31 Sun Pak Products Inc Flameless heater, heating assembly and heating kit
JPS5569684A (en) 1978-11-20 1980-05-26 Akinobu Fujiwara Pyrogen
US4356044A (en) * 1981-03-23 1982-10-26 Ireco Chemicals Emulsion explosives containing high concentrations of calcium nitrate
US4428784A (en) * 1983-03-07 1984-01-31 Ireco Chemicals Blasting compositions containing sodium nitrate
US4522190A (en) * 1983-11-03 1985-06-11 University Of Cincinnati Flexible electrochemical heater
EP0835087B1 (fr) 1995-06-29 2002-02-06 The Procter & Gamble Company Cellules a chaleur
US5984995A (en) 1996-03-29 1999-11-16 The Procter & Gamble Company Heat cells
EP1655005A4 (fr) * 2003-07-31 2010-12-08 Kao Corp Outil de chauffage sous forme de feuille
WO2007120168A2 (fr) * 2005-07-12 2007-10-25 Rechargeable Battery Corporation Appareil de chauffage portatif et composite de combustible métallique utilisé avec un tel appareil
EP2052183B1 (fr) * 2006-08-10 2017-06-14 Rechargeable Battery Corporation Système de chauffage activé par l'oxygène et méthodes de réalisation dudit système
MX2010012415A (es) * 2008-05-15 2011-03-29 Wyeth Llc Star Sistema de calor humedo portatil.
CN102066370B (zh) * 2008-07-15 2014-05-14 霍夫曼-拉罗奇有限公司 苯基-咪唑并吡啶类和哒嗪类

Also Published As

Publication number Publication date
CN104203873A (zh) 2014-12-10
JP2015507166A (ja) 2015-03-05
CA2860621A1 (fr) 2013-07-11
BR112014016626A8 (pt) 2017-07-04
ZA201404905B (en) 2017-08-30
AU2013207453A1 (en) 2014-07-24
WO2013103871A1 (fr) 2013-07-11
EP2800732A4 (fr) 2015-09-02
US20130174835A1 (en) 2013-07-11
MX2014008307A (es) 2014-12-08
BR112014016626A2 (pt) 2017-06-13

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