Bottled liquid dispensers
Bottled water or other liquid is supplied via a bottle connector 5 for releasable sealing engagement with a neck formed on the bottle, and a transfer tube 6 to a reservoir 7 wherein the water may be cooled. The bottle connector 5 , the transfer tube 6 and the reservoir 7 are all moulded of a plastics material containing silver bound in a ceramic ion exchange resin so that the silver ions (Ag+) are slowly released to prevent microbial growth on the surface of the components. The bottle connector may include a feed tube 21 or a dip tube which also releases silver ions. Furthermore, the transfer tube 6 may be connected to the reservoir 7 via a reservoir connector 29 which may incorporate a draw tube 31 and one or more outlet tubes 14, 36 , e.g. leading to a discharge outlet, all of which release silver ions.
1. A bottled liquid dispenser in which liquid is supplied from a bottle to a discharge outlet via a reservoir, wherein the dispenser includes a reservoir; a bottle connector for releasable sealing engagement with the open end of a neck formed on the bottle, and in liquid flow-conducting communication therewith; and conduit means connected to said bottle connector for conducting liquid from the bottle connector to the reservoir, characterised in that at least the bottle connector, the conduit means and the reservoir are formed of or lined with a material containing silver in a bound form to provide integral surfaces from which silver ions (Ag+) are released into the liquid during contact therewith and at a controlled rate.
2. A bottled liquid dispenser according to claim 1 , in which the material which releases the silver ions includes an ion exchange resin.
3. A bottled liquid dispenser according to claim 2 , in which the ion exchange resin is a ceramic.
4. A bottled liquid dispenser according to claim 3 , in which the ion exchange resin is a zirconium phosphate based ceramic.
5. A bottled liquid dispenser according to claim 2 , in which particles of the ion exchange resin are dispersed in a moulded plastics substrate.
6. A bottled liquid dispenser according to claim 5 , in which the proportion of ion exchange resin in the plastics substrate is less than 2% by weight.
7. A bottled liquid dispenser according to claim 1 , in which the bottle connector incorporates a feed tube or a dip tube which is arranged to project into the neck of the bottle and which is formed of or coated with the material which releases silver ions.
8. A bottled liquid dispenser according to claim 1 , including at least one outlet tube for conducting liquid from the reservoir to the discharge outlet and the or each outlet tube is formed of or lined with the material which releases silver ions.
9. A bottled liquid dispenser according to claim 8 , in which the conduit means and the or each outlet tube is connected with the reservoir via a reservoir connector which is formed of or lined with the material which releases silver ions.
10. A bottled liquid dispenser according to claim 9 , in which the reservoir connector incorporates a draw tube which projects into the reservoir for removing liquid therefrom and the draw tube is formed of or coated with the material which releases silver ions.
11. A bottled liquid dispenser in which liquid is supplied from a bottle to a discharge outlet via a reservoir, wherein the dispenser includes a reservoir and transfer means defining a liquid flow path and constructed for conducting liquid from the bottle to the reservoir, said transfer means including a bottle connector for releasable sealing engagement with the open end of a neck formed on the bottle and in liquid flow-conducting communication therewith; characterised in that at least the transfer means and the reservoir are formed of or lined with a material containing silver in a bound form to provide integral surfaces from which silver ions (Ag+) are released into the liquid during contact therewith and at a controlled rate.
12. A bottled liquid dispenser according to claim 11 , in which the material which releases the silver ions includes an ion exchange resin.
13. A bottled liquid dispenser according to claim 12 , in which the ion exchange resin is a ceramic.
14. A bottled liquid dispenser according to claim 13 , in which the ion exchange resin is a zirconium phosphate based ceramic.
15. A bottled liquid dispenser according to claim 12 , in which particles of the ion exchange resin are dispersed in a moulded plastics substrate.
16. A bottled liquid dispenser according to claim 15 , in which the proportion of ion exchange resin in the plastics substrate is less than 2% by weight.
17. A bottled liquid dispenser according to claim 11 , in which the bottle connector incorporates a feed tube or a dip tube which is arranged to project into the neck of the bottle and which is formed of or coated with the material which releases silver ions.
18. A bottled liquid dispenser according to claim 11 , including at least one outlet tube for conducting liquid from the reservoir to the discharge outlet and the or each outlet tube is formed of or lined with the material which releases silver ions.
19. A bottled liquid dispenser according to claim 18 , in which the transfer means includes a reservoir connector to which the or each outlet tube is connected.
20. A bottled liquid dispenser according to claim 19 , in which the reservoir connector incorporates a draw tube which projects into the reservoir for removing liquid therefrom and the draw tube is formed of or coated with the material which releases silver ions.