| 摘要 |
A steam generating apparatus (20) is described, comprising a boiler (24) provided with electric heating means (25) and current controlling means (33, 40; 37) for controlling the current in the heating means; the apparatus further comprising at least one temperature sensor (34) and a pressure sensor (35); the apparatus being capable of generating steam at a variable steam output rate; wherein the controlling means (33, 40; 37) are designed, at a relatively low steam output rate setting, to control the current in the heating means on the basis of a temperature measurement signal (T) from the temperature sensor (34), and wherein the controlling means (33, 40; 37) are designed, at a relatively high steam output rate setting, to control the current in the heating means on the basis of pressure.
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