Portable heat source

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 5/18 (2006.01) A47J 36/28 (2006.01) B65D 81/34 (2006.01) F24J 1/00 (2006.01)

Patent

CA 2261688

This invention is a portable heat source that may be used to warm food, beverage or other supplies. The heater material (4) is a solid that may be stored for long periods of time, and activated by addition of water or an aqueous solution (22). The heater consists of an acidic anhydride or salt together with a basic anhydride or salt, such that addition of water to both acidic and basic anhydrides produces heat as well as acid and base respectively; subsequent reaction of the acid and base produces addditional heat, as well as a safe, neutral product that is easily disposed. The invention further consists of means to regulate the rate of heat production by the use of additives and processing methods, so that heat is produced at a rate compatible with the rate at which the food or other materials can absorb the heat.

L'invention concerne une source de chaleur portative qui peut être utilisée pour réchauffer des aliments, boissons et autres. Le matériau de chauffage (4) est un solide qui peut être stocker pendant de longues périodes et activé par l'addition d'eau ou d'une solution aqueuse (22). Le matériau chauffant consiste en un sel ou anhydride acide combiné à un sel ou anhydride basique, de sorte que l'addition d'eau aux anhydrides acide et basique produise de la chaleur ainsi que l'acide et la base respectivement. La réaction subséquente de l'acide et de la base produit une chaleur additionnelle ainsi qu'un produit neutre et inoffensif facile à évacuer. L'invention porte également sur un moyen pour réguler la vitesse de production de chaleur au moyen d'additifs et de procédés de traitement de sorte que de la chaleur soit produite à une vitesse compatible avec la vitesse à laquelle l'aliment ou autre peut absorber la chaleur.

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