| 摘要 |
<p>A frothing device (2) comprises a pumping/heating unit (40) and supply lines (10, 20, 30) for supplying a liquid, air and steam to the unit (40). During operation of the device (2), an actual supply of the liquid, the air and the steam to the pumping/heating unit (40) takes place, wherein these fluids get mixed inside the unit (40), so that a hot, frothed liquid is obtained. In the air supply line (20), an air pump (22) is arranged, and features of the air supply are accurately controlled by controlling the operation of this pump (22). As the way in which a frothing process of the liquid is performed is largely influenced by the amount of air that is supplied to the liquid, the frothing device (2) offers the possibility of accurately determining a froth quality, i.e. an amount and a bubble-size of the froth.</p> |
