04-02-2021 дата публикации
Номер: US20210030197A1
A machine for preparing hot beverages, including a beverage outlet for dispensing a prepared hot beverage, an instantaneous water heater for heating water during preparation of the hot beverage, a flow meter for determining the volume flow of water flowing through the instantaneous water heater, and a drainage valve arranged downstream of the instantaneous water heater in the direction of flow formed as a controlled directional control valve via which water flowing through the instantaneous water heater can be conducted to a waste water line or collection container instead towards the beverage outlet. A control device is provided having a scale detection function for analyzing a scaling level of the instantaneous water heater using measured values of the flow meter. This control device, during scaling level analysis, switches the drainage valve to a switched position in which the fluid flow is conducted from the instantaneous water heater directly to the waste water line or collection container. 1. A machine for preparing hot beverages , comprising:{'b': '55', 'a beverage outlet () configured for dispensing a prepared hot beverage,'}{'b': 10', '20, 'an instantaneous water heater (, ) configured for heating water during preparation of the hot beverage,'}{'b': 12', '22', '10', '20, 'a flow meter (, ) configured for analyzing a volume flow of water flowing through the instantaneous water heater (, ),'}{'b': 10', '20', '16', '26', '10', '20, 'a drainage valve arranged downstream of the instantaneous water heater (, ) in a direction of flow, the drainage valve comprising a controlled directional control valve (, ) via which water flowing through the instantaneous water heater (, ) is conductable to a waste water line or a waste water collection container instead of toward the beverage outlet, and'}{'b': 60', '61', '10', '20', '12', '22', '60', '16', '26', '10', '20, 'a controller () which has a scaling detection function () configured for carrying out an analysis of a ...
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