| 摘要 |
The invention relates to a surface blow-off apparatus for protecting exposed surfaces from the accumulation of snow and from icing comprising a distribution duct connected to a compressed air source, and having outlet orifices, the outlet orifices are implemented as nozzles (2, 3, 4) arranged in a network dividing the surface (1 ) to be protected into surface units. The active operating time of the nozzles is limited to program-controlled time slots. The primary objective of limiting nozzle operating time is to keep air consumption at an effective minimum. The intensity of snowfall usually permits that the nozzles are operated intermittently during the snowfall. Utilising sensor data (temperature, wind direction, snowfall), the control system may automatically modify preprogrammed system parameters. |
