| 摘要 |
PROBLEM TO BE SOLVED: To simplify a duct structure and hence reduce pressure loss of cold air by providing at least one communication hole for communicating first and second supply passages for supplying cold air nearer than a blowoff outlet located farthest viewed from a supply hole. SOLUTION: A refrigerator duct is constructed with a duct 1 extending upward from a cold air supply hole and a downwardly extending duct 2 where a plurality of blowoff outlets are provided to a refrigeration chamber. Thereupon, an opening 4 is provided at a position on the down side from a blowoff outlet 3 located at an uppermost end of the duct 2 for coupling the duct 1 and the duct 2. When cold air entering from a cold air supply hole passes through the duct 1 and is directed to the opening 4, voltex is produced owing to a final end of the duct 1 being closed and hence a vortex wall is formed. Hereby, the cold air flowing upward through the duct 1 is horizontally branched upstream of the vortex to allow the blow to flow out from the horizontal opening 4, and in the duct 2 the air flow is branched vertically and is discharged from each blowoff outlet 3. |
