WC Device With a WC Body Having a Porous Inner Surface

Abstract

A WC device with a WC body and a flushing water supply device for supplying flush water to the toilet body. The flush water supply device is provided with a water connection for drinking water for use as flush water. The WC body has a bowl-shaped WC body section and a subsequent odor trap. The bowl-shaped WC body section has a porous inner surface which is connected to a device for supplying cleaning fluid for keeping the porous inner surface clean. The flushing water supply device is provided with at least one back-suction safety device, which prevents back-suction of cleaning liquid from the porous inner surface to the water connection. Thus, the WC device completely or at least largely prevents excrement or dirt residues from adhering to the inner surface of the WC body, and the back-suction safety device provides hygienically flawless protection on the drinking water side.

1 . A WC device with a WC body and a flushing water supply device for supplying flushing water to the WC body,
 wherein the flushing water supply device is provided with a water connection for drinking water for use as flushing water,   the WC body having a bowl-shaped WC body section and a subsequent odor trap, the function of the odor trap preferably being based on sealing water,   wherein the bowl-shaped WC body portion has a porous inner surface,   wherein the porous inner surface is connected to a device for supplying cleaning liquid for keeping clean and/or cleaning the porous inner surface, and   wherein the device for supplying cleaning liquid and/or the flushing water supply device are/is provided with at least one back-suction safety device, which prevents back-suction of cleaning liquid from the porous inner surface to the water connection.   
     
     
         2 . The WC device according to  claim 1 , wherein the flushing water supply device has a cistern, preferably a concealed cistern, a drain valve and a filling valve for filling the cistern with drinking water coming from the water connection, the filling valve having an outlet mouth, which, in the operating position of the filling valve, defines a free flow path relative to a water level present in the cistern, and wherein the device for supplying cleaning liquid is connected to the cistern, wherein water present in the cistern is used as cleaning liquid for keeping clean and/or cleaning the porous inner surface of the WC body section. 
     
     
         3 . The WC device according to  claim 1 , wherein the device for supplying cleaning fluid has a container as a water reservoir with a drain valve or overflow and a valve for filling the container with drinking water coming from the or a second water connection, the valve for filling the container having an outlet mouth which, in the operating position of the valve, defines a free flow path with respect to a water level present in the container. 
     
     
         4 . The WC device according to  claim 3 , wherein the device for supplying cleaning liquid, preferably the container, is provided with a heating device for heating the cleaning liquid. 
     
     
         5 . The WC device according to  claim 1 , wherein the device for supplying cleaning fluid has an additional water connection for direct connection to a hot or cold water pipe, in particular to a hot or cold water network, an injector and an electrically controllable valve, wherein the injector is arranged in a liquid-tight flow-through housing, and wherein the electrically controllable valve is preferably arranged between the additional water connection and the injector. 
     
     
         6 . The WC device according to  claim 1 , wherein the device for supplying cleaning liquid is provided with a pump for conveying the cleaning liquid in the direction of the porous inner surface. 
     
     
         7 . The WC device according to  claim 1 , wherein the device for supplying cleaning liquid is provided with at least one sensor and a controller, the controller triggering a supply of cleaning liquid as a function of at least one sensor signal from the sensor or the sensors. 
     
     
         8 . The WC device according to  claim 7 , wherein the sensor or at least one of the sensors is arranged in or on a mounting element supporting the WC body or in or on the WC body. 
     
     
         9 . The WC device according to  claim 7 , wherein the sensor or at least one of the sensors is designed as a motion sensor, weight sensor, pressure sensor or noise sensor. 
     
     
         10 . The WC device according to  claim 1 , wherein the function of the odour trap is based on sealing water, the porous inner surface of the bowl-shaped body section being formed exclusively above a water level which is defined by the maximum effective sealing water level which is set during normal use of the WC body. 
     
     
         11 . The WC device according to  claim 1 , wherein the function of the odour trap is based on sealing water, the porous inner surface of the bowl-shaped body section being formed above and below the water level which is defined by the maximum effective sealing water height which is set during normal use of the WC body. 
     
     
         12 . The WC device according to  claim 10 , wherein the porous inner surface of the bowl-shaped body section is connected to a liquid-conducting wall section of the WC body located above the sealing water level, the WC device being designed in such a way that liquid located in the liquid-conducting wall section is at least partially retained in the liquid-conducting wall section of the WC body after the device for supplying cleaning liquid is switched off. 
     
     
         13 . The WC device according to  claim 1 , wherein the porous inner surface of the bowl-shaped body section is hydraulically connected to a liquid-conducting wall section of the WC body located above the sealing water level, the WC device being designed in such a way that liquid located in the liquid-conducting wall section is drained from the liquid-conducting wall section into the odor trap or into a drainage line, preferably a waste water line, by means of an automatically opening valve after the device for supplying cleaning liquid has been switched off. 
     
     
         14 . The WC device according to  claim 11 , wherein the porous inner surface of the bowl-shaped body section is hydraulically connected to a liquid-conducting wall section of the toilet body located above and below the sealing water level, the WC device being designed in such a way that in the liquid-conducting wall section below the sealing water level s flushed out into a waste water pipe connected to the odor trap in the same way as the sealing water in the odor trap after the device for supplying cleaning fluid is switched off during a normal flushing process of the WC body. 
     
     
         15 . The WC device according to  claim 1 , wherein the WC body is designed in such a way that its flushing is based on the displacement principle. 
     
     
         16 . The WC device according to  claim 12 , wherein the liquid-conducting wall section of the WC body is connected to a suction device in such a way that liquid located in the liquid-conducting wall section below and above the sealing water level or liquid located only below or only above the sealing water level is sucked off by means of the suction device.