Corrosion resistant expansion tank

F - Mech Eng,Light,Heat,Weapons – 17 – B

Patent

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Details

F17B 1/26 (2006.01) E03B 11/02 (2006.01) F17C 1/16 (2006.01) F24D 3/10 (2006.01)

Patent

CA 2175537

A first aspect of the invention is directed to a corrosion resistant expansion tank that is divided into two sections: one that may be precharged with a fluid under pressure (for example, a gas) from a first fluid source; and the other being connected to a second fluid source, for example the hot water source in a hot water heating system. Accordinq to this first aspect of the invention, the tank comprises a pair of molded plastic tank sections that each integrally include the connection to one of the aforementioned fluid sources; and further include means for separating the interior of the tank into the two sections referred to hereinabove. Examples of such means for separating include application specific membranes (such as diaphragms and bladders of varying types) that are impermeable to the fluids stored in the separate tank sections. Further aspects of the invention relate to apparatus for securing the means for separating within a tank and to processes for cost effectively manufacturing the tanks contemplated by the aforementioned first aspect of the invention.

Un premier aspect de l'invention concerne un réservoir d'expansion séparé en deux compartiments : un compartiment pouvant être préchargé à l'aide d'un fluide sous pression (par exemple un gaz) à partir d'une première source de fluide; un autre compartiment est raccordé à une seconde source de fluide, par exemple l'eau chaude d'un système de chauffage à eau chaude. Selon le premier aspect de l'invention, le réservoir comprend une paire de sections en plastique moulé auxquelles est intégré un raccordement à l'une des sources de fluide ci-dessus mentionnées; l'invention porte en outre sur un moyen de séparer l'intérieur du réservoir en deux compartiments auxquels il est précédemment fait mention. Des exemples de tels moyens de séparation comprennent des membranes d'application spécifique (par exemple des diaphragmes et des réservoir souples de divers types) qui sont imperméables aux fluides stockés dans les sections séparées du réservoir. D'autres aspects de l'invention concernent l'appareil servant à fixer en place le moyen de séparation à l'intérieur d'un réservoir ainsi que des procédés de fabrication rentables des réservoirs en ce qui concerne le premier aspect de l'invention.

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