The invention relates to a device (1) for generating steam. The device (1) comprises a first plate (2) being inclined at a positive first angle (AO) compared to the horizontal direction (H) to define a first upper end (2a) and a first lower end (2b), a heating element (3) to heat the first plate (2) to a predetermined temperature being at least above water evaporation temperature, a water inlet arrangement (4) for dispensing water onto the first plate (2), a second plate (5) being inclined at a negative second angle (BO) compared to the horizontal direction (H) to define a second upper end (5a) and a second lower end (5b), the second upper end (5a) adjoining the first lower end (2b), and a container (6) extending at least below said first lower end (2b), said container (6) being arranged for collecting scale flakes falling from the first plate (2). This solution allows creating a larger volume for the collection of scale, thus increasing the operating life of the device (1).