| 摘要 |
A device for foaming a liquid foodstuff, especially milk, is provided including a pump (2) that has, on the suction side, a feed line (3) that can be connected in a fluid-conducting way to a storage container for the liquid foodstuff. An air feed line (3a) by which air can be fed to the foodstuff is arranged in a path of flow of the liquid foodstuff on the suction side of the pump (2) and, a throttle (4a) is arranged in the path of flow of the foodstuff on the downstream side of the pump (2). The air feed line (3a) includes an air valve (3b) that can be controlled by a control unit (9) and the air valve (3b) is an intermittent air valve (3b) having at least one state with high air flow and one state with comparatively lower air flow and/or with no air flow can be specified selectively by the control unit (9), and the control unit (9) and air valve (3b) are constructed to interact such that the average air flow of the air valve can be controlled through repeated switching between the at least two states of the air valve. |
