Claims:1. An aerator (100) for a single pipe arrangement (102) for drainage system of a multi-storied building, the aerator (100) comprises:
a mixing module (104) having:
at least one first opening (108) adaptable to connect with a soil water line;
at least one second opening (110) adaptable to connect with a waste water line, such that the second opening (110) is arranged substantially vertically lower than the first opening (108); and
a mixing chamber;
a spigot outlet (112) arranged substantially vertically lower than the second opening (106) for discharging the soil and waste water;
a socket inlet (114) adaptable to connect with a waste water line for discharging foul smell through a connecting pipe portion (116) or for connecting to the spigot outlet (112) of another aerator (100) unit placed on a higher floor; and
an offset module (106) having:
a first elbow (124) provided from the socket inlet (114) and arranged at 45 degrees; and
a second elbow (126) connected to the first elbow (124) through an offset chamber (132) such that the second elbow (126) is joined to the spigot outlet (112) forming a Y-Joint.

2. The aerator (100) as claimed in claim 1, wherein the first opening (108) is connected to a horizontal drainage pipes laid on a floor of the building for receiving discharged from toilet stools and the like.

3. The aerator (100) as claimed in claim 1, wherein the mixing module (104) has three first openings (108).

4. The aerator (100) as claimed in claim 1, wherein the second opening (110) is connected to a horizontal drainage pipes laid on a floor of the building to receive sewage discharge.

5. The aerator (100) as claimed in claim 1, wherein the mixing module (104) may has three second openings (110).

6. The aerator (100) as claimed in claim 1, wherein diameter of the first opening (108) is 110mm, diameter of the second opening (110) is 75mm and the diameter of the spigot outlet (112) is 110mm.

7. The aerator (100) as claimed in claim 1, wherein the second opening (110) is closed with an arrangement for opening using drill.

8. The aerator (100) as claimed in claim 1, wherein the socket inlet (114) is connected to an air admittance valve(AAV)(118) at a highest open port (120).

9. The aerator (100) as claimed in claim 1, wherein a vent opening (128) is provided between the first opening (108) and the end of first elbow (124).

10. The aerator (100) as claimed in claim 9, wherein a cap (130) is provided at the vent opening (128).

11. The aerator (100) as claimed in claim 1, wherein the second elbow (126) is arranged at 30 degrees.

12. The aerator (100) as claimed in claim 1, wherein a plurality of linear ribs (134) are provided on the inner surface of the second elbow (126).

13. The aerator (100) as claimed in claim 1, wherein the socket inlet (114) has one or more circular ribs (122) on the outer surface.

14. The aerator (100) as claimed in claim 1, further comprises a hook (136) on the outer surface of the first elbow (124).
, Description:BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, features, and advantages of the invention will be apparent from the following description when read with reference to the accompanying drawings:

Figure 1 illustrates a perspective view of a prior art drainage system;
Figure 2 illustrates a perspective view of a prior art drainage system in working;
Figure 3 illustrates a perspective view of an exemplary aerator for a single pipe arrangement for drainage system of a multi-storied building according to an embodiment of the invention;
Figure 4 illustrates a perspective view of the exemplary aerator for a single pipe arrangement for drainage system of a multi-storied building in working according to an embodiment of the invention;
Figure 5 illustrates an isometric view of the exemplary aerator for a single pipe arrangement for drainage system of a multi-storied building according to an embodiment of the invention;
Figure 6 illustrates a perspective outer view of the exemplary aerator according to an embodiment of the invention;
Figure 7 illustrates a front view of the exemplary aerator according to an embodiment of the invention; and
Figure 8 illustrates an cross-sectional view of the exemplary aerator according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention will now be described in detail with reference to the accompanying drawing.

The disclosed aerator illustrates a single stack drainage system to allow water and air in the same pipe. This eliminates the separate waste and vent pipe. The disclosed arrangement has multiple connections with one product and ideally suitable for medium and high-rise buildings from 15 to 40 storeys.

Figure 3 illustrates a perspective view of an exemplary aerator (100) for a single pipe arrangement (102) for drainage system of a multi-storied building and Figure 4 illustrates a perspective view of the exemplary aerator (100) for the single pipe arrangement (102) in working according to an embodiment of the invention. As illustrated the aerator (100) for the single pipe arrangement (102) includes a mixing module (104) and an offset module (106). The mixing module (104) may include at least one first opening (108) adaptable to connect with a soil water line. The first opening (108) may be connected to the horizontal drainage pipes laid on a floor of the building to receive discharged from toilet stools and the like. According to an embodiment, the aerator (100) may have three first openings (108) as illustrated in Figure 5 for connecting multiple housing units on same floor. According to an exemplary embodiment, the diameter of the first opening (108) may be 110mm.

The mixing module (104) further includes at least one second opening (110) adaptable to connect with a waste water line. According to an embodiment, the second opening (110) may be arranged substantially vertically lower than the first opening (108). The second opening (110) may be connected to the horizontal drainage pipes laid on a floor of the building to receive sewage discharge. According to an embodiment, the aerator (100) may have three second openings (110) for connecting multiple housing units on same floor. According to an exemplary embodiment, the diameter of the second opening (110) may be 75mm. According to yet another embodiment, the second opening (110) may be closed with an arrangement for opening using drill. A plumber may drill open the inlet through the drill guide provided at the second opening (110). This will eliminate separate end caps for closing the un used second openings (110).

Figure 6 illustrates a perspective outer view, figure 7 illustrates a front view and figure 8 illustrates an cross-sectional view of an exemplary aerator (100) according to an embodiment of the invention. As illustrated, the aerator (100) may further have a spigot outlet (112) arranged substantially vertically lower than the second opening (110) for discharging the soil and waste water. According to an exemplary embodiment, the diameter of the spigot outlet (112) may be 110mm. The mixing module (104) may further have a mixing chamber (140).

The offset module (106) includes a socket inlet (114) adaptable to connect with a waste water line for discharging foul smell through a connecting pipe portion (116) or for connecting to the spigot outlet (112) of another aerator (100) unit placed on a higher floor. The connecting pipe portion (116) may be connected to an air admittance valve(AAV) (118) at a highest open port (120). According to an embodiment, the socket inlet (114) may have one or more circular ribs (122) on the outer surface. The circular ribs (122) enables to fit a bracket without sliding.

According to an embodiment of the invention, the offset module (106) further includes a first elbow (124) and a second elbow (126). The first elbow (124) may be provided from the socket inlet (114) and may be arranged at 45 degrees. According to yet another embodiment, a vent opening (128) may be provided between the first opening (108) and the end of first elbow (124) for facilitating escape of foul smell and gasses from the soil water. According to yet another embodiment, a cap (130) may be provided at the vent opening (128). The cap (130) may be provided for preventing blockage of the vent opening (128). The second elbow (126) may be connected to the first elbow (124) through an offset chamber (132). According to an embodiment, the second elbow (126) may be joined to the spigot outlet (112) forming a Y-Joint. According to yet another embodiment, the second elbow (126) may be arranged at 30 degrees. The Y-Joint enables achieving optimal flow and smooth mixing transition. According to yet another embodiment, a plurality of linear ribs (134) may be provided on the inner surface of the second elbow (126). The linear ribs (134) improves the water flow.

According to yet another embodiment, the aerator (100) may further include a hook (136). The hook (136) may be provided on the outer surface of the first elbow (124). The hook (136) may enable the plumbers to carry and hold the aerator (100) assembly easily during installation.

The disclosed arrangement (102) may be repeated for each floor of the building. According to an embodiment, the connecting pipe portion (116) may be connected through a connecting pipe (138) to the air admittance valve(AAV)(118) or to aerator (100) for the housing unit of the lower floor. The main flow from upper floors enter through the offset chamber (132). The flow from lateral inlets gets mixed smoothly with the main flow in the mixing chamber (140).
The disclosed aerator (100) arrangement uses high velocity of the flowing soil and waste to reduce the mechanical impact on the piping arrangement (102) thereby reducing noise and vibration in the drainage system. As illustrated, a single aerator (100) arrangement may be used to connect multiple (three) bathrooms on a single floor thereby reducing the required duct size substantially for installation of drainage pipes. Moreover, usage of single pipe system substantially reduces the material, cost and time for installation. The disclosed aerator (100) arrangement may be instrumental in solving at least following problems associated with conventional aerator system:
• Elimination of blockage in the vent opening.
• Improve the water flow in the stack Aerator.
• Elimination of end caps for closing smaller inlets.
• Easier installation for plumbers.

As will be readily apparent to those skilled in the art, the present invention may easily be produced in other specific forms without departing from its essential characteristics. The present embodiments are, therefore, to be considered as merely illustrative and not restrictive, the scope of the invention being indicated by the claims rather than the foregoing description, and all changes which come within therefore intended to be embraced therein.