| 摘要 |
PURPOSE: A doorframe for an outdoor elevator entrance with a structure is provided to prevent an entrance from being stopped the opening and closing operation because a doorframe groove is heated to prevent the freezing of moisture when the moisture is detected. CONSTITUTION: A doorframe for an outdoor elevator entrance comprises an anti-freezing unit and a foreign material discharging unit. The anti-freezing unit comprises an electric heating wire part(15), a moisture detecting part, an outdoor temperature detecting part, an opening and closing detecting part, a power supplying part, a main control part, and an auxiliary control part. The electric heating wire part is arranged in one side of a doorframe groove to emit heat energy. The moisture detecting part detects whether moisture exists in the doorframe groove or not. The opening and closing detecting part detects the opening and closing operation of an entrance. The power supplying part supplies power to an electric heating wire. The main control part repetitively supplies the power to the electric heating wire at a fixed time when the outdoor air temperature is under 0°C and the moisture detecting part detects the moisture in the doorframe groove. The auxiliary control part supplies power to the electric heating wire at a fixed time regardless of the moisture if the outdoor air temperature is under 0°C and the opening and closing operation of the entrance is poor in the opening and closing detecting part of the entrance. |
