Device for Adding and Additive to Tap Water

Abstract

The invention relates to a device for adding a liquid or gaseous additive to tap water, comprising at least one additive container for the additive, at least one feed channel leading from the additive container to a tap water conduit located downstream of a controllable tap and at least one controllable closing valve placed in the channel. For the purpose of adding the additive to the water use can be made of a pressurized container. This pressure can be generated by a propellant gas already present in the container. It is also possible to make use of a pump incorporated in the device which can be driven in diverse ways. It is however recommended for the additive container to be coupled to a pump for pumping additive present in the interior of the additive container to the feed channel.

1 - 30 . (canceled) 
     
     
         31 . A device for adding a liquid or gaseous additive to tap water, comprising:
 at least one additive container for the additive;   at least one feed channel leading from the additive container to a tap water conduit located downstream of a controllable tap; and   at least one controllable closing valve placed in the channel,   wherein the tap water conduit is provided with a venturi for causing a decrease in pressure at the position of the connection of the channel in the tap water conduit.   
     
     
         32 . The device as claimed in  claim 31 , wherein the tap water conduit is provided with a venturi for causing a decrease in pressure and that a venting valve is placed downstream of an outflow of the feed channel into the tap water conduit. 
     
     
         33 . The device as claimed in  claim 31 , wherein both venturis are formed by the same venturi. 
     
     
         34 . The device as claimed in  claim 31 , wherein a bypass passing at least one of the venturis is placed in the water conduit, which bypass can be activated and deactivated. 
     
     
         35 . The device as claimed in  claim 34 , wherein the bypass can be activated and deactivated by a valve which is adapted to adjust the ratio of the flow flowing through the bypass and the flow flowing through the conduit with the venturis. 
     
     
         36 . The device as claimed in  claim 35 , wherein the valve is provided with a housing with a cylindrical cavity in which a feed conduit debouches in an end surface and the conduit with the venturis and the bypass debouch in a jacket surface, and that a rotatably drivable, substantially cylinder jacket-like valve body is placed in the cavity, in contact with the jacket surface of the cavity, in which body are arranged openings which are covered to variable degree by the valve body depending on the rotation position of the valve body. 
     
     
         37 . The device as claimed in  claim 36 , wherein the openings are placed in the valve body in order to maintain at the same value the sum of the cross-sectional area of the bypass and the cross-sectional area of the conduit with the venturi. 
     
     
         38 . The device as claimed in  claim 37 , wherein the valve body is coupled to a motor for continuous driving in rotation. 
     
     
         39 . The device as claimed in  claim 31 , wherein a non-return valve is placed between the controllable tap and the outflow of the feed channel into the tap water channel. 
     
     
         40 . The device as claimed in  claim 31 , wherein a coupling between the channel and the additive container is adapted to form a connection between the interior of the additive container and the feed channel. 
     
     
         41 . The device as claimed in  claim 31 , wherein the device is provided with a detector coupled to the control element for detecting the presence of a label placed on the additive container, and for blocking the pump when the label does not satisfy predetermined requirements. 
     
     
         42 . The device as claimed in  claim 41 , wherein the detector is adapted to detect an electronic label. 
     
     
         43 . The device as claimed in  claim 41 , wherein the control device is adapted to measure the additive removed from the additive container and to block the pump when a quantity of additive has been removed from the additive container which corresponds to the volume of the additive container. 
     
     
         44 . An additive container, adapted for coupling to a device as claimed in  claim 31 , wherein the additive container is filled with a soap, shower gel, nutritional oil, body milk, a fragrance, bath salt or oxygen. 
     
     
         45 . The additive container as claimed in  claim 44 , wherein the additive container is provided with a label which can be read by the detector of the device.