Patent ID: 6390149
Filing Date: 2002-05-21
Classification: F01M

Abstract:
A device usable, in a medium where there exists an atmosphere under pressure and a force of gravity, to empty a container of viscous fluid, the device comprising:a receptacle (1) defining a main volume (2) suitable for containing said viscous fluid, said receptacle being shaped to be suitable for placing in said medium so that the main volume has a top portion (3) and a bottom portion (4); a pump (10) having a suction inlet (11) and a delivery outlet (12); a tube (14) including an inlet opening (15) and an outlet opening (16); and means (17) for mounting the tube (14) in association with the receptacle (1) in such a manner that the inlet and outlet openings (15, 16) are situated respectively outside and inside the receptacle (1), the end (18) of the tube (14) including the inlet opening (15) being suitable for dipping into the container that is to be emptied; the device being characterized by the fact that it further comprises a separation wall (5) for defining first and second secondary volumes (6, 7) inside the main volume (2), the first secondary volume (6) including at least a fraction (9) of the top portion (3) of the main volume (2), and an orifice (8) made through the separation wall (5) to put the first and second secondary volumes (6, 7) into communication with each other, said orifice opening out into the second secondary volume (7) in said fraction (9) of the top portion (3) of the main volume (2), by the fact that said pump (10) is mounted to co-operate with the receptacle (1) so that its suction inlet (11) is situated in the first secondary volume (6), and its delivery outlet (12) opens out to the outside (13) of the receptacle (1), and that the outlet opening (16) of the tube (14) is situated in the second secondary volume (7);the second secondary volume (7) being subdivided into first and second auxiliary volumes (21, 22), these two auxiliary volumes being in communication via a constriction (23) formed between the wall (19) of the receptacle (1) and the separation wall (5), said constriction constituting a large head loss for the viscous fluid, the first auxiliary volume (21) being situated in the top portion (3) of the main volume (2), the orifice (8) opening out into said first auxiliary volume (21).