Abstract: A vacuum sewer toilet system comprises a toilet compartment, a toilet bowl installed in the toilet compartment, a vacuum sewer, at least one electrically operated device for initiating an emptying and rinsing operation of the toilet bowl, and electrical components for controlling supply of operating current to the electrically operated device. The electrical components are incorporated in a control unit that is sealed against humidity and is protected against unauthorized human access. The control unit is mounted in the toilet compartment at a location that is spaced from the toilet bowl.

Abstract: A vacuum sewer system comprises a normally closed sewer valve connected between the outlet opening of a waste receiving unit to be emptied and a sewer pipe, and an ejector. The ejector is an integrated part of the sewer pipe. The sewer pipe includes one portion forming a suction pipe of the ejector and another portion forming a discharge pipe of the ejector.

Abstract: A vacuum sewer system comprises a normally closed sewer valve connected between the outlet opening of a waste receiving unit to be emptied and a sewer pipe, and an ejector. The ejector is an integrated part of the sewer pipe. The sewer pipe includes one portion forming a suction pipe of the ejector and another portion forming a discharge pipe of the ejector.

Abstract: A simplified vacuum sewer arrangement comprises a limited number of toilet bowls, preferably at the most 60 toilet bowls, which through a sewer pipe are connected to a common sewage collecting container, and a dry rotary vane pump for generating and maintaining a considerable partial vacuum in the sewer pipe and in the collecting container. The sewage collecting container is a relatively small reservoir which has to be frequently emptied and the volume of which is preferably at the most 100 liters. A liquid separator protects the pump from moisture. A rigidly installed tube and valve system connects the pressure side of the dry rotary vane pump periodically to the collecting container for emptying the container to another location by means of the pressure created by the dry rotary vane pump.

Abstract: A vacuum sewer system comprises a liquid-driven ejector, the working medium of which is fed to the ejector by a circulation pump from a sewage collecting container, the suction side of the ejector being connected via a check valve to a vacuum sewer network. Air and sewage delivered through the sewer network flow through the ejector into the collecting container. The bore of the discharge pipe of the ejector is substantially cylindrical throughout. Its length is 8 to 20, preferably 10 to 15, times the diameter of its bore and the pipe discharges directly into the open interior of the collecting container.

Abstract: A vacuum sewer toilet system comprises a toilet compartment, a toilet bowl installed in the toilet compartment, a vacuum sewer, at least one electrically operated device for initiating an emptying and rinsing operation of the toilet bowl, and electrical components for controlling supply of operating current to the electrically operated device. The electrical components are incorporated in a control unit that is sealed against humidity and is protected against unauthorized human access. The control unit is mounted in the toilet compartment at a location that is spaced from the toilet bowl.

Abstract: A vacuum toilet system comprises a small number of toilet bowls, a sewer, a small number of normally closed sewer valves connecting the toilet bowls respectively to the sewer, a sewage collecting tank in open communication with the sewer, a vacuum generator having a suction side in open communication with the sewer and operative to generate a partial vacuum in the tank and sewer, and a flush initiator associated with each toilet bowl for generating a toilet flushing impulse. A control unit is responsive to a toilet flushing impulse generated by the flush initiator associated with a given toilet bowl to cause the sewer valve connecting that toilet bowl to the sewer to open and the vacuum generator to operate for a predetermined time. In this fashion, a partial vacuum is generated in the tank and sewer of a level that depends on the free vacuum volume of the system.