초록 ▼

A vacuum toilet assembly including a vacuum toilet and a vacuum tank (e.g. a combined holding and vacuum tank) uses a simple air pump to remove air from the tank to create a partial vacuum. The air pump is capable of achieving about ten inches mercury of vacuum in an empty 9.5 gallon vacuum tank in

A vacuum toilet assembly including a vacuum toilet and a vacuum tank (e.g. a combined holding and vacuum tank) uses a simple air pump to remove air from the tank to create a partial vacuum. The air pump is capable of achieving about ten inches mercury of vacuum in an empty 9.5 gallon vacuum tank in roughly one minute, and can pump at least about one liter of liquid per minute. A combined sound muffler and odor filter and/or rat-tail check valve and noise reducer, is/are connected to the outlet from the air pump. The pump comprises a powered reciprocating diaphragm pump having a reciprocating diaphragm powered by an electric motor rotating an eccentric at about 2300 rpm, and oppositely directed first and second disk valves. The disk valves have elastomeric disk valve elements die-cut from flat sheets which cooperate with perforated concave surfaces in a dividing wall in the pump housing. The reciprocating diaphragm has a total stroke length of about 0.3-0.33 inches.

대표청구항 ▼

[ What is claimed is:] [1.] A vacuum toilet assembly comprising:a vacuum toilet;a vacuum tank operatively connected to said vacuum toilet so as to provide a source of vacuum to remove waste from said toilet when said toilet is flushed;an air pump connected to said vacuum tank for removing air from s

[ What is claimed is:] [1.] A vacuum toilet assembly comprising:a vacuum toilet;a vacuum tank operatively connected to said vacuum toilet so as to provide a source of vacuum to remove waste from said toilet when said toilet is flushed;an air pump connected to said vacuum tank for removing air from said vacuum tank to create a partial vacuum therein, said air pump having an inlet conduit connected to an upper portion of said tank, and an outlet; a central housing portion having said inlet and outlet therein, a first dividing wall substantially parallel to the direction of movement of air directly between said inlet and outlet and having first and second opposite surfaces each having a concave portion, and a second dividing wall preventing direct flow of air between said inlet and said outlet; a first elastomeric disk valve element engaging said concave portion of said first surface, and a second elastomeric disk valve element engaging said concave portion of said second surface; said first dividing wall having a plurality of first perforations extending between said first and second surfaces and associated with said first disk valve element, and a plurality of second perforations extending between said first and second surfaces and associated with said second disk valve element; a powered reciprocating diaphragm movable in a direction generally perpendicular to said first and second surfaces to cause air flow through said first perforations when said diaphragm moves away from said first and second surfaces, and to cause air flow through said second perforations when said diaphragm moves toward said first and second surfaces; and wherein said central housing portion has a tapered volume defined between said diaphragm and said first dividing wall, said volume having an area adjacent said first dividing wall of about 83-93% of the area adjacent said diaphragm when in a central portion intermediate the ends of its stroke; andat least one of a sound muffler and an odor filter, and a check valve and noise reducer, operatively connected to said air pump outlet.