Toilet flushing method and system

Abstract

In one aspect, the present invention is directed to a toilet flushing system, comprising: a first pump ( 38 ) and piping, for emptying the bend ( 56 ) of the flush toilet from fluids (water and urine) into a drainpipe ( 42 ); a water provider, for providing water for flushing the emptied toilet bowl; and a sensor (such as a foot pedal 24 ), for triggering the operation of emptying the bend and flushing the emptied toilet bowl thereafter; a control unit, for controlling the operation of emptying the bend ( 56 ) and flushing the emptied toilet bowl thereafter by a water quantity of at least the quantity required for sealing the bend; thereby flushing the toilet bowl using less water than in toilet flushing systems of the prior art.

1 . A toilet flushing system, comprising:
 a pump and piping, for emptying the bend of said flush toilet from fluids into a drainpipe;   a water provider, for providing water for flushing the emptied toilet bowl;   a sensor, for triggering the operation of emptying said bend and flushing said emptied toilet bowl thereafter; and   a control unit, for controlling the operation of emptying said bend and flushing said emptied toilet bowl thereafter by a water quantity of at least the quantity required for sealing said bend;   
       thereby using less water than diluting and flushing the content of said toilet bowl. 
     
     
         2 . A system according to  claim 1 , wherein said water provider is a secondary flush tank. 
     
     
         3 . A system according to  claim 2 , further comprising a second pump, for pumping water out of said secondary flush tank, into said toilet bowl. 
     
     
         4 . A system according to  claim 1 , wherein said secondary flush tank further comprises an inlet for inserting therein disinfectant and/or odor mask. 
     
     
         5 . A system according to  claim 1 , further comprising an arrangement for connecting therein a container of disinfectant and/or odor mask. 
     
     
         6 . A system according to  claim 1 , wherein said water provider is the flush tank of said toilet. 
     
     
         7 . A system according to  claim 1 , further comprising sprayer(s), for increasing the cleansing effect of flushing the emptied toilet bowl, thereby using less water. 
     
     
         8 . A system according to  claim 1 , wherein said water provider is a domestic water source. 
     
     
         9 . A system according to  claim 1 , further comprising a facility for preventing blocking said piping by solids. 
     
     
         10 . A system according to  claim 1 , wherein said sensor is embodied as a foot pedal. 
     
     
         11 . A system according to  claim 1 , wherein said sensor is embodied as a foot switch. 
     
     
         12 . A system according to  claim 1 , wherein said control unit employs a timer for determining the time for emptying said bend, and for determining the time and/or for refilling said bend. 
     
     
         13 . A system according to  claim 1 , wherein said control unit employs a second sensor for determining that said bend is empty. 
     
     
         14 . A system according to  claim 1 , wherein said control unit employs a third sensor for detecting that said bend is sealed. 
     
     
         15 . A system according to  claim 1 , wherein at least one of said first pump and said second pump is a gear pump. 
     
     
         16 . A toilet flushing method for use after urinating in a flush toilet, the method comprising the steps of:
 (a) emptying the bend of said flush toilet without flushing said bowl; and   (b) upon completing emptying said bend, flushing the bowl of said flush toilet until said bend is sealed;   
       wherein said emptying is carried out via a pipe or via an outlet disposed at the bottom of said bend. 
     
     
         17 . A method according to  claim 16 , wherein said flushing the bowl is carried out using spraying, thereby flushing said emptied toilet bowl more efficiently, thereby enabling obtaining the same cleansing effect with less water. 
     
     
         18 . A system according to  claim 1 , wherein said pump and piping comprises a pipe disposed at the bottom of said bend. 
     
     
         19 . A system according to  claim 1 , wherein said bend comprises an outlet at the bottom thereof, through which the content thereof is pumped out of said bend. 
     
     
         20 . A system according to  claim 1 , wherein said emptying is carried out by sucking the content of said bend. 
     
     
         21 . A method according to  claim 16 , wherein said emptying is carried out through a pipe disposed at the bottom of said bend. 
     
     
         22 . A method according to  claim 16 , wherein said emptying is carried out through an outlet at the bottom of said bend. 
     
     
         23 . A method according to  claim 16 , wherein said emptying is carried out by sucking the content of said bend.