| 摘要 |
PROBLEM TO BE SOLVED: To reduce the temperature unevenness to simplify the air conditioning management and to suppress the scatting of dust to sanitarily supply air by once receiving the air regulated in temperature and blown out of an air conditioner in an extension duct formed into a bag by use of cloth, and then supplying it into a cargo chamber by the ventilation of the extension duct. SOLUTION: A duct 4 for blowing the air regulated by an air conditioner 3 into a cargo chamber 2 is mounted on a refrigerator 1. A cloth-made extension duct 7 is connected to the outlet port side of the duct 4 through a connecting duct 6, and the extension duct 7 is suspended from a ceiling 2a through a guide rail 8 and a trolley 9. When the air conditioner 3 is driven to blow out cold air from the duct 4, the cold air is not directly blown into the cargo chamber 2, but blown into the extension duct 7 and blown in calm state to the whole through the clearances of the cloth fiber. The calm cold air is naturally descended to uniformly cool the whole inner part of the cargo chamber 2. Further, the function of filter is imparted to the cloth-made extension duct 7 to suppress the stirring of dust.
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