Patent ID: 6620259
Filing Date: 2003-09-16
Classification: A47L,B01D,B08B,G21F

Abstract:
A method of cleaning a containment enclosure provided with at least one standard opening closed by a retractable closure device, and also provided with a suction means having a free suction endpiece associated with a filtration means and being closable by a removable plug, said suction means and said filtration means being arranged inside a removable receptacle adapted to removably dock onto said standard opening of said containment enclosure, said removable receptacle having an opening dimensioned to mate with said standard opening of said retractable closure device and being closed by a retractable cover, said method comprising:removably docking, in a leakproof manner, said removable receptacle, while closed by its retractable cover, onto said closed standard opting of said enclosure, said receptacle being docked by coupling said opening thereof to said at least one standard opening, said cover and said closure device of said standard opening thus coming into contact and said free suction endpiece being closed by said removable plug; securing said removable cover to said retractable closure device of said standard opening, thereby constituting an assembly; retracting said assembly into the inside of said containment enclosure, thereby placing the inside of said enclosure into fluid communication with the inside of said receptacle; retracting said removable plug so as to open said free suction endpiece of said suction means; actuating said suction means to draw an atmosphere from said enclosure; filtering said atmosphere drawn by said suction means through said filtration means; delivering said atmosphere to said removable receptacle; recycling said atmosphere in said enclosure; stopping said suction by deactuating said suction means; closing said free suction endpiece by means of said retractable plug; closing in a leakproof manner both said enclosure and said receptacle by removing said assembly from said interior of said enclosure and separating said cover and said means for closing, thereby deconstituting said assembly; and undocking said closed receptacle from said closed standard opening; wherein said method of cleaning is performed under double containment.