Vacuum sewer system
AssigneeEvac International Oy
InventorTommi Naski
Life of this patent
Estimating the term…
Abstract
The invention relates to an arrangement in a vacuum sewer system, which comprises a sewer network having a sewage source and sewer piping adapted for receiving sewage from the sewage source. A liquid driven ejector device functions as a source of vacuum for the vacuum sewer system. In order to improve the efficiency of and to ensure the function of the ejector device, the ejector device forms a primary circuit, which is separated from a secondary circuit formed by the sewage collecting process.
Claims17
A vacuum sewer system for transporting sewage, the system comprising:
- a sewer network including a sewage source and sewer piping adapted to receive sewage from the sewage source;
- and
- a liquid driven ejector device for creating a partial vacuum pressure, the ejector device including a primary circuit for circulating liquid functioning as a working medium through the ejector device;
- wherein the sewer network defines a secondary circuit for transporting waste;
- and
- wherein the primary circuit and said secondary circuit are separated from each other.
An ejector device for generating vacuum in a vacuum sewer system having a sewer network with a sewage source and sewer piping adapted to receive sewage from the sewage source, the sewer network defining a sewage path, the ejector device comprising:
- an ejector container;
- an ejector having a suction side;
- means for circulating a liquid functioning as a working medium of the ejector;
- and
- a suction connection connected to the suction side of the ejector and adapted for fluid communication with the sewer network;
- wherein the ejector container, ejector, and circulating means define a circulation circuit for the working medium for the ejector device, and the circulation circuit is separated from the sewage path.
Dependencies are inferred from the claim text.