Assembly for filtering pressurized fluids and method and...

B - Operations – Transporting – 01 – D

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Details

B01D 17/12 (2006.01) B01D 17/00 (2006.01) B01D 24/48 (2006.01) B01D 27/14 (2006.01) B01D 29/11 (2006.01) B01D 35/12 (2006.01) B01D 35/30 (2006.01) B01D 37/04 (2006.01)

Patent

CA 2315062

Filter assembly (100) for filtering pressurized fluid removed from a fluid system having undesirable levels of contamination, such as a dry cleaning system. The filter assembly (100) has an upstream connection (110) in fluid communication with the fluid system to remove contaminated pressurized fluid therefrom. A plurality of filter lines (120, 130, 140) are in fluid communication with the upstream connection (110). The plurality of filter lines are connected in parallel with each other for concurrent flow of the pressurized fluid therethrough. Each filter line has a strainer (122) and at least one insoluble contaminant filter connected in series (124). Additional filter elements may be provided. The filters have housings with cross- dimensions substantially similar to those of the filter lines and the other piping used throughout the fluid system. A downstream connection (150) is provided in fluid communication between the filter lines and the fluid system such that pressurized fluid removed from the fluid system flows from the upstream connection (110) and in parallel through the filter lines (120, 130, 140) before returning to the fluid system through the downstream connection (150).

L'invention concerne un ensemble filtre (100) destiné à filtrer un fluide sous pression extrait d'un système de fluide présentant des niveaux indésirables de contamination, tel qu'un système de nettoyage à sec. L'ensemble filtre (100) comprend un raccordement amont (110) en communication fluidique avec le système de fluide afin d'en éliminer le fluide sous pression contaminé. Une pluralité de conduits (120, 130, 140) du filtre sont en communication fluidique avec le raccordement amont (110). Les conduits du filtre sont reliés en parallèle mutuellement afin de former un écoulement concourant du fluide sous pression. Chaque conduit du filtre présente un filtre à tamis (122) ainsi qu'au moins un filtre à contaminants insolubles reliés en série (124). On peut prévoir des éléments filtrants additionnels. Les filtres présentent des logements dont les dimensions transversales sont sensiblement similaires à celles des conduits de filtrage et des autres tuyauteries utilisées dans tout le système de fluide. Un raccordement aval (150) est disposé en communication fluidique entre les conduits du filtre et le système de fluide de manière que le fluide sous pression extrait du système de fluide s'écoule à partir du raccordement amont (110) et en parallèle à travers les conduits (120, 130, 140) du filtre avant de revenir au système de fluide par le raccordement aval (150).

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