Self-heating systems and methods for rapidly heating a comestible substance
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-001/24
B65D-001/36
출원번호
US-0400725
(2009-03-09)
등록번호
US-8556108
(2013-10-15)
발명자
/ 주소
Farone, William
Palmer, Tracy
출원인 / 주소
Heat Wave Technologies, LLC
대리인 / 주소
Knobbe Martens Olson & Bear, LLP
인용정보
피인용 횟수 :
2인용 특허 :
77
초록▼
Self-heating systems for rapidly and effectively heating a comestible substance are disclosed. Self-heating systems generally include a reaction chamber and a heating chamber. The heating chamber contains a substance to be heated. The reaction chamber contains reactants that, when contacted, exother
Self-heating systems for rapidly and effectively heating a comestible substance are disclosed. Self-heating systems generally include a reaction chamber and a heating chamber. The heating chamber contains a substance to be heated. The reaction chamber contains reactants that, when contacted, exothermically react. The containers and reactants can be configured to heat at least six fluid ounces of comestible substance in less than one minute. The solid chemical reactant mixture can comprise magnesium chloride, calcium chloride, and/or calcium oxide. Methods for heating at least six fluid ounces of comestible substance in less than one minute are also provided.
대표청구항▼
1. A self-heating system for heating a comestible substance, comprising: a container body defining a volume for holding the comestible substance, the comestible substance having a volume of about 6 fluid ounces to about 12 fluid ounces;a plurality of reactants, said reactants consists essentially of
1. A self-heating system for heating a comestible substance, comprising: a container body defining a volume for holding the comestible substance, the comestible substance having a volume of about 6 fluid ounces to about 12 fluid ounces;a plurality of reactants, said reactants consists essentially of calcium oxide, calcium chloride, magnesium chloride and ethylene vinyl acetate;a reaction chamber disposed adjacent the container body and adapted to house a said plurality of reactants, wherein at least two of the reactants are separated by a rupturable barrier and rupturing of the barrier allows contact between the reactants to form a reaction mixture and initiate a multi-stage exothermic reaction;wherein the exothermic reaction generates sufficient heat during a first stage of the reaction to cause for an initial duration at least a portion of the contents of the reaction chamber to have a temperature of at least 212° F., wherein a portion of the heat from the exothermic reaction is absorbed by the ethylene vinyl acetate, and another portion of the heat is transferred to the comestible substance in the container body, said portion of heat is sufficient to heat the comestible substance from a temperature of about 80° F. to a temperature of about 145° F. within one minute of the initiation of the exothermic reaction;wherein the exothermic reaction is configured to generate a lesser amount of heat during at least a second stage of the exothermic reaction than during the first stage of the exothermic reaction, wherein a portion of the heat generated during the second stage of the reaction is transferred to the comestible substance at a rate that is capable of maintaining the temperature of the comestible substance at or above 145° F. for at least 2 minutes; andwherein the coefficient of heat transfer from the exothermic reaction to the comestible substance is between about 0.0167 BTU/(ft2·sec.·° F.) to 0.0833 BTU/(ft2·sec.·° F.). 2. The system of claim 1, wherein during the first stage of the exothermic reaction, steam is produced in the reaction chamber for a duration of about 1-2 seconds. 3. The system of claim 1, wherein one of the reactants consists essentially of a thermoplastic material, said thermoplastic material is adapted to inhibit temperature of the reaction chamber from reaching above a threshold value. 4. The system of claim 1, wherein the system comprises an interior insulating layer, said insulating layer having a thermal conductivity value of about 0.012 to 0.086 BTU/(ft2·sec.·° F.). 5. The system of claim 1, wherein the portion of the heat from the exothermic reaction that is transferred to the comestible substance in the container body within one minute of the initiation of the exothermic reaction is at least sufficient to heat the comestible substance from a temperature of about 70° F. to a temperature of about 145° F. 6. The system of claim 1, wherein the portion of the heat generated during the second stage of the reaction that is transferred to the comestible substance is transferred to the comestible substance at a rate that is capable of maintaining the temperature of the comestible substance at or above 135° F. for at least 10 minutes. 7. A self-heating container for heating a comestible substance, comprising: a first chamber adapted to receive the comestible substance, the comestible substance having a volume;a second chamber in thermal communication with the first chamber;one or more solid reactants, said one or more solid reactants consists essentially of calcium oxide, calcium chloride, magnesium chloride, and a thermoplastic material;a rupturable barrier positioned within the second chamber to divide the second chamber into a first compartment and a second compartment, wherein the first compartment is adapted to receive an aqueous solution and the second compartment is adapted to receive the one or more solid chemical reactants;wherein rupture of the barrier allows contact between the aqueous solution and the one or more solid chemical reactants, which together form a reaction mixture and result in an exothermic reaction,wherein the exothermic reaction results in a temperature above 212° F. within the second chamber soon after the reaction begins and maintains a temperature of at least 170° F. within the second chamber for at least one minute;wherein at least 60% of the heat generated by the exothermic reaction is transferred to the comestible substance through a thermally conductive surface disposed between the first chamber and the second chamber, wherein the reaction mixture is positioned to contact at least 2.5 square inches of the thermally conductive surface per each cubic inch of comestible substance inside the first chamber; andwherein the coefficient of heat transfer from the exothermic reaction to the comestible substance is at least 0.0167 BTU/(ft2·sec.·° F.). 8. The self-heating container of claim 7, wherein the solid chemical reactants comprises at least two chemical reactants, each of the at least two chemical reactants being in granular form, an average grain size of the at least two chemical reactants being approximately equal. 9. The self-heating container of claim 7, wherein the inner container body and the outer container body are connected by a double seam. 10. The self-heating container of claim 7, wherein said magnesium chloride is anhydrous magnesium chloride, dihydrate magnesium chloride, or a mixture thereof.
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이 특허에 인용된 특허 (77)
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