A Toilet Including a Water Trap Having a Conical Part

Abstract

The present invention relates to a toilet comprising a bowl ( 1 ), a water trap ( 2 ) including a conical part ( 2 ) in the form of a curved cone with an inlet ( 3 ) connected to the bowl and an outlet ( 4 ), and a flushing system ( 6 ) comprising at least one nozzle ( 7 a ) adapted to flush clean the water trap by generating a vortex of water in the conical part. The conical part is designed with increasing diameter in a direction towards the outlet, wherein the diameter of the outlet of the conical part is larger than the diameter of the inlet of the conical part.

1 . A toilet comprising a bowl ( 1 ), a water trap including a conical part ( 2 ;  2 ′) in the form of a curved cone with an inlet ( 3 ;  3 ′) connected to the bowl and an outlet ( 4 ;  4 ′), and a flushing system ( 6 ;  6 ′;  20 ) comprising at least one nozzle ( 7   a - b ;  21 ) adapted to flush clean the water trap by generating a vortex of water in the conical part, wherein
 the conical part is designed with increasing diameter in a direction towards the outlet, and the diameter (D 2 ;D 2 ′) of the outlet of the conical part is larger than the diameter (D 1 ;D 1 ′) of the inlet of the conical part. 
 
     
     
         2 . The toilet according to  claim 1 , wherein the outlet ( 4 ) has a diameter (D 2 ; D 2 ′) which is more than 10% larger than the inlet diameter (D 1 ;D 2 ′). 
     
     
         3 . The toilet according to  claim 1 , wherein the conical part ( 2 ;  2 ′) has a tubular wall and said at least one nozzle ( 7   a - b ;  21 ) is arranged to generate a water jet tangentially with an inside of the wall. 
     
     
         4 . The toilet according to  claim 1 , wherein the conical part ( 2 ;  2 ′) has a tubular wall and said nozzle ( 7   a - b ;  21 ) is formed as an opening in said tubular wall. 
     
     
         5 . The toilet according to  claim 1 , wherein the conical part ( 2 ;  2 ′) has a tubular wall including two wall parts ( 14   a - b ) arranged to provided so that they partly overlap each other in the tangential direction and said nozzle ( 7   a - b ) is designed as an opening between said wall parts. 
     
     
         6 . The toilet according to  claim 1 , wherein the flushing system ( 6 ;  6 ′) comprises of at least two nozzles ( 7   a - b ) distanced from each other, and each of the nozzles are arranged to generate a water jet tangentially with an inside wall of the conical part. 
     
     
         7 . The toilet according to  claim 1 , wherein the water trap ( 2 ) has a lower curved portion ( 11 ) and said nozzle ( 7   a - b ;  21 ) is arranged between the inlet ( 3 ) and the lower curved portion. 
     
     
         8 . The toilet according to  claim 7 , wherein said nozzle ( 7   a - b ;  21 ) is arranged closer to the inlet ( 3 ) than to the curved portion ( 11 ). 
     
     
         9 . The toilet according to  claim 7 , wherein the flushing system ( 6 ;  20 ) has a connection ( 9 ) which is arranged to receive flushing water directly from an incoming water supply pipe. 
     
     
         10 . The toilet according to  claim 7 , wherein the flushing system ( 6 ;  6 ′;  20 ) comprises more than two nozzles ( 7   a - b ), and a chamber ( 16 ) to equalize and distribute the flow between the nozzles, the chamber including an outer wall ( 20 ) enclosing the water trap and the nozzles and having an inlet opening ( 17 ) for incoming water. 
     
     
         11 . The toilet according to  claim 1 , wherein the flushing system ( 6 ;  20 ) has a connection ( 9 ) which is arranged to receive flushing water directly from an incoming water supply pipe. 
     
     
         12 . The toilet according to  claim 1 , wherein the flushing system ( 6 ;  6 ′;  20 ) comprises more than two nozzles ( 7   a - b ), and a chamber ( 16 ) to equalize and distribute the flow between the nozzles, the chamber including an outer wall ( 20 ) enclosing the water trap and the nozzles and having an inlet opening ( 17 ) for incoming water. 
     
     
         13 . The toilet according to  claim 2 , wherein the outlet ( 4 ) has a diameter (D 2 ; D 2 ′) which is more than 20% larger than the inlet diameter)(D 1 ;D 2 ′). 
     
     
         14 . The toilet according to  claim 13 , wherein the outlet ( 4 ) has a diameter (D 2 ; D 2 ′) which is more than 30% larger than the inlet diameter (D 1 ;D 2 ′).