| 摘要 |
PROBLEM TO BE SOLVED: To enable a constant and widely-spread blow-off of cold air, by flowing cold air from a freezer into respective cold air ducts, and adjusting air volume and speed of the blow-off air using an open/close opening which works as a wind pressure adjusting opening. SOLUTION: An air call duct device comprises a storage body 2 disposed on a chassis 2A of a refrigerating vehicle or a freezing vehicle, a freezing unit part 3 mounted on the storage body 2, a cold air duct part 4 and an air curtain part 5. The air call duct device can adjust the air volume and the speed of blow-off cold air thus enabling a constant and widely-spread blow-off of cold air. Simultaneously, the air call duct device can freely change the air volume and the speed of the blow-off air in a frontward, central or rearward direction depending on the purpose of blow-off. |
