Abstract: This invention relates to a central suction-cleaning installation with water flushing and double rinsing. This installation is characterized in that it contains water flush generating means consisting of a water intake at the bottom end (5) of the chamber (7) via a duct (25) linked to a source of pressurized water (20) and in which there are interposed an electrovalve (26) and a needle valve tap (27) controlled by a float (28) which is arranged inside the chamber, above a reserve of water (13), in that the chamber is further provided with a double rinsing system containing, on the one hand, a diffuser ring (31) directed at said reserve of water and, on the other, a spray diffuser (32) of a dust filter (35) placed between the suction plant (34) and said diffuser ring (31), whereby the ring and spray diffusers are linked to said source of pressurized water via a duct (29) which is provided with an electrovalve (30). This invention is useful for applications in central suction-cleaning.

Abstract: The invention concerns a central vacuum cleaning system for vacuum cleaning ducts permanently installed in buildings. The device has three connected sections which form the integral unit. The top section contains the suction turbine, its motor and an exhaust outlet for clean air. The center section contains air baffles, a perforated circular conduit below the air baffles and for dispersing water, an angled inlet conduit for dust-laden air, and a water level sensor. The bottom section contains a water outlet, a flexible sleeve valve, the outlet end of the angled inlet conduit from the center section, a water reservoir with a water level above the outlet end of the inlet conduit and substantially even with the water outlet, and a drain plug. Dust-laden air bubbles through water in the reservoir. The dust-containing water is automatically flushed by electronic control circuitry coordinating the filling and evacuation sequence.

Abstract: A centralized suction cleaning installation comprises a network of fixed pipes connected to suction generating means. Air intakes to which said pipes are connected are adapted to have portable cleaning tools coupled to them. An upper end of a first chamber is coupled to the suction generating means. Its lower end is connected to the fixed pipe network and to an evacuation pipe incorporating a first valve. A first storage tank in the lower end of the first chamber is filled with water to the level of the evacuation pipe. Air sucked into the installation is bubbled through the water in this tank. A second water storage tank in a second chamber is connected to a pressurized water supply by a float valve and by a second valve to the first chamber. A three-way solenoid valve connected to the pressurized water supply operates the float valve and the first and second valves. It is controlled by a switch integrated into a hook or other support for the portable tools.