| 摘要 |
The entrance tract is placed under the tract of the additional air exchange, tract of the main air exchange and opposite the tract of the passage pin. The escape passage is formed by the space between the upper frame with fabric and the front edge of the passage bar and it is closable by the passage pin. The escape space is formed by the upper bar, upper frame with fabric, where the light-proof cover is telescopically arranged, lower bar, lower frame with fabric being mounted underneath, back frame with fabric and in the front by the front frame with fabric or light-proof insertion, which placed in the tract of the additional air exchange. The mentioned frames with fabric are horizontally-vertically fixable and removable. Hereby, ventilation of hive when closing is effective even with the temperature over 30 degrees C. At the same time, the structure of the ventilation system enables to increase its use in pollen production, anti-varroasis intervention, bee feeding, for creation of high super and catching of winter deposition. This safeguards rationalized bee-keeping and hive maintaining.<IMAGE>
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