| 摘要 |
PURPOSE:To enable a partial air conditioning to be adapted and facilitate a repairing and inspection of an air conditioning unit by a method wherein an exterior air feeding duct communicating with an exterior air inlet port of which one end is arranged at a roof under keeping of an operating space between in and a floor surface along a girder and a discharging duct having a discharged gas inlet port positioned near the floor surface at one end thereof and having the other end communicating with a discharging port arrranged in the roof are installed in a lower space of a crane girder. CONSTITUTION:The supplying duct 4a for an exterior air supplying duct 4 is arranged along a girder for every production line in the lower space of the crane girder 1 and an operating space 5 is formed between the lower part thereof and the floor surface. In the space of operating area 5, the exterior air is entered at the exterior air inlet port 10, passed through a duct 4b, passed through a duct 4a from an air conditioner 6 and then blown out at the blowing port 4a1. In summer and mid-winter season, the air conditioning coil 6a is utilized to perform a cooking or heating of air and in turn in spring and autumn when an air cooling operation is to be performed, the air conditioning coil is not operated, but the surrounding air is blown into the operating space 5 as it is, and then the cooling with the surronding air is performed. The discharged air is taken at the discharged air inlet ports 13a1 and 13b1 under the operation of a blower 15 and then discharged from the discharging port 14. |
