Whole heated, chemical containing body, chemical containing...

B - Operations – Transporting – 01 – D

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B01D 1/00 (2006.01) A01M 1/20 (2006.01) A01N 25/18 (2006.01) A61L 9/02 (2006.01) A61L 9/03 (2006.01) C09K 3/00 (2006.01)

Patent

CA 2473552

A formed material containing a chemical for vaporizing the chemical over a long time through heating it, which is of the type wherein the whole material is heated, and has a thickness of 3 mm or more, characterized in that it exhibits a heat loss percentage L (L = (h - t)/h X 100, wherein h and t represent a heating temperature and the lowest temperature of the formed material, respectively) of 70 % or less; a container for holding the formed material; an indicator suitable for showing the degree of consumption of the chemical in the material; and a device for heating and transpiring a chemical, which is suitable for heating the formed material. The container has one or more holes for passage of vapor and has a distance between its inner face and the surface of the formed material of 1 to 10 mm. The indicator has a mark which disappears gradually with the elapse of heating time and a mark which appears gradually with heating time. The device has a heating element having a heat generating surface arranged so as to form an angle of 0 to 70 degree to a plane on which the device is placed.

La présente invention concerne une pastille à charge chimique conçue pour l'évaporation prolongée de la charge par chauffage. En l'occurrence, la chauffe se fait dans la masse, l'épaisseur de la pastille étant d'au moins 3 mm. Cette pastille a pour caractéristique de présenter une déperdition de chaleur L n'excédant pas 70% calculée selon la formule "L = (h-t)/h X 100" dans laquelle h représente la température de chauffage et t la température minimale de la pastille. L'invention concerne également non seulement un étui de conservation de la pastille, mais aussi un témoin permettant de constater le niveau de consommation de la charge chimique de la pastille, et enfin un dispositif permettant de chauffer et d'évaporer un produit chimique, et convenant pour le chauffage de la pastille. L'étui comporte un ou plusieurs trous permettant le passage de la vapeur, l'écart entre sa face intérieure et la surface de la pastille allant de 1 à 10 mm. Le témoin présente une marque qui disparaît progressivement au fur et à mesure du chauffage et une deuxième marque qui apparaît progressivement au fur et à mesure du chauffage. Le dispositif comporte un réchauffeur dont la surface radiante est agencée de façon à former avec le plan sur lequel est posé le dispositif un angle de 0· à 70·.

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