| 摘要 |
A system (26) for filtering water for an apparatus (10) intended for the production of beverages (24) is described. The apparatus (10) comprises one or more pumps (12), able to draw the water necessary for preparing the beverage (24) from the mains water supply or from a suitable tank (14), and a piping system (16) capable of sending pressurised water, through the pump or the pumps (12), to at least one preparing device capable of adding a soluble substance to the water to obtain the beverage (24). The filtering system (26) comprises at least one semipermeable membrane (28) arranged along the piping system (16) and downstream of the pump or of the pumps (12). The pump or the pumps (12) are capable of directly supplying the filtering system (26) with mains water at a predetermined pressure, at least equal and opposite to the osmotic pressure, to produce purified water having characteristics suitable for preparing the beverage (24). The pump or the pumps (12) can be of the positive displacement, rotary or vane pump type, of the type with internal or external gears, or of the electromagnetic vibratory type or of the diaphragm type. |
