Odourless toilet

Abstract

An odourless toilet is provided. The toilet comprises a flush tank comprising a wet chamber, which comprises a flush assembly and a flush outlet. The toilet further comprises a ventilator inlet and a ventilator. The toilet also optionally comprises a toilet bowl, which comprises a basin and a basin access. In one aspect, the toilet comprises a diverter positioned between the flush tank and toilet bowl registering with the basin access. The diverter comprises a flush passage, which couples the flush outlet to a wet inlet of the basin access. The diverter also comprises an exhaust passage, which couples the ventilator inlet to a dry outlet of the basin access. A toilet assembly is also provided in which a fluid transfer passage passes between a basin portion and a storage portion including a wet chamber. A ventilator is operable to withdraw waste air through a waste air passage via the fluid transfer passage and an overflow passage. The overflow passage includes a trunk portion, a first branch portion and a second branch portion. The overflow passage operates to seal the second branch portion for waste air to pass from the basin portion to the ventilator through the trunk and the first branch portion.

1 . A toilet assembly comprising:
 a storage portion including a wet chamber to store flushing water;   a basin portion;   a fluid transfer passage between the basin portion and the storage portion, the fluid transfer passage in communication with the wet chamber;   a flush valve portion, the flush valve portion being operable in, a first operative phase, for releasing the flushing water from the wet chamber to the basin portion through the fluid transfer passage;   a ventilator in communication with the fluid transfer passage via an overflow passage and a waste air passage, the ventilator being operable, in a second operative phase, for withdrawing waste air from the basin portion through the waste air transfer passage via the overflow passage and the fluid transfer passage;   an overflow passage including a trunk portion extending from the waste air transfer passage in a lower region of the wet chamber to a first overflow elevation in an upper region of the wet chamber, the first overflow elevation being above a predetermined full water elevation in the wet chamber,   the overflow passage including:
 a first branch portion in fluid communication with the ventilator; and 
 a second branch portion in fluid communication with the wet chamber at a third elevation below the first overflow elevation and below the full water elevation, the second branch portion being operable to receive flushing water therein, in the second operative phase, for sealing the second branch portion for waste air to pass from the basin portion to the ventilator through the trunk and the first branch portion. 
   
     
     
         2 . A toilet assembly according to  claim 1 , the flush valve portion being in fluid communication with the trunk portion. 
     
     
         3 . A toilet assembly according to  claim 2 , further comprising: a chamber outlet connected to the ventilator through which the drawn waste air is exhausted to a toilet bowl trap, said chamber outlet fluidly connected to a location downstream of the basin portion. 
     
     
         4 . A toilet assembly according to  claim 1 , wherein the toilet assembly further comprises: a flush tank lid and wherein there is a relatively airtight seal at the top of the tank lid. 
     
     
         5 . A toilet assembly according to  claim 1 , wherein the toilet assembly further comprises: a filter connected to the ventilator within the waste air transfer passage, the filter for receiving and neutralising the basin air, and a passage extending from the ventilator to a chamber outlet for exhausting the drawn basin air. 
     
     
         6 . A toilet assembly according to  claim 5 , wherein the toilet assembly further comprises: a one-way valve positioned in the waste air transfer passage, the valve permitting air flow from basin portion to the filter and preventing backflow of the drawn air to the basin portion. 
     
     
         7 . A toilet assembly according to  claim 1 , wherein the ventilator is within the storage portion. 
     
     
         8 . A toilet assembly according to  claim 1 , wherein the toilet assembly further comprises: a sensor for detecting the presence of a toilet user, the sensor activating or deactivating the ventilator in response to a detected presence. 
     
     
         9 . An odourless toilet according to  claim 8 , wherein the sensor is positioned on the storage portion. 
     
     
         10 . A toilet assembly according to  claim 1 , wherein the basin portion further comprises: air apertures in fluid communication with the dry outlet. 
     
     
         11 . A toilet assembly according to  claim 1 , wherein the basin portion further comprises:
 an air channel and a respective air aperture in fluid communication with the dry outlet; and,   a flush channel and a respective flush aperture in fluid communication with the wet inlet.   
     
     
         12 . A toilet assembly according to  claim 11 , wherein the air channel and flush channel are positioned about the rim of the toilet bowl. 
     
     
         13 . A toilet assembly according to  claim 1 , wherein the basin portion further comprises:
 an inner basin wall;   an outer basin wall defining the exterior of the basin, the inner and outer walls defining an air channel in fluid communication with the dry outlet; and,   an air channel aperture opening to the air channel and being positioned on the inner basin wall at a point above the basin water line.