| 摘要 |
PURPOSE: A door device for a cold storage warehouse is provided to improve thermal efficiency, to completely block noise which is generated from the inside and outside, and to keep the quality of stockpiles. CONSTITUTION: A door device for a cold storage warehouse comprises a cold and warm air shielding door(30) and a heater. The first level of the cold and warm air shielding door is mounted with a first seal for preventing the inflow of external warm air. The second level of the cold and warm air shielding door is mounted with a second seal for preventing the outflow of internal cold air. The second seal doubly controls the outflow/inflow of cold/warm air and blocks noise which is generated from the inside/outside. The heater prevents the contacting area of the seal and outer wall from freezing and maintains airtightness of the contacting area. |
