Removal of odours from toilet bowl

Abstract

A toilet bowl or urinal, or water trap has an outlet connected to a source of negative pressure such as an extraction fan, the outlet being located above the water trap in the bowl or urinal and unconnected to either the soil water pipe or the flush water pipe. The inlet to the trap includes a portion below and a portion above the level of the water in the trap.

1 - 6 . (canceled) 
     
     
         7 . A bottle trap for a urinal, basin or the like, including an inlet for fluid and an outlet whose entry is above the water level, characterised in that the exit of the fluid inlet is above the level of the water and is in communication with an annulus defined by the inlet and the housing; the annulus including baffle means adapted to seal the outlet from the annulus, and a second outlet including means to draw air from the annulus. 
     
     
         8 . The bottle trap as claimed in  claim 7  characterised in that the outlet is in close proximity with the water at the bottom of the water trap for the concentrated malodours originating from the water in the trap to be immediately drawn through the outlet to a suitable location where they are inoffensive. 
     
     
         9 . The bottle trap according to  claim 7  characterised in that the odour outlet pipe is formed integrally with the trap. 
     
     
         10 . The bottle trap according to  claim 8  characterised in that the odour outlet pipe is formed integrally with the trap. 
     
     
         11 . The bottle trap according to  claim 7  characterised in that the means to draw the air from the annulus includes an extractor fan. 
     
     
         12 . The bottle trap according to  claim 8  characterised in that the means to draw the air from the annulus includes an extractor fan. 
     
     
         13 . The bottle trap according to  claim 9  characterised in that the means to draw the air from the annulus includes an extractor fan. 
     
     
         14 . The bottle trap according to  claim 10  characterised in that the means to draw the air from the annulus includes an extractor fan.