| 摘要 |
PURPOSE:To utilize not only static pressure of air flow but also dynamic pressure thereof to perform ventilation of air in a container efficiently by providing a guide member for admitting the air in a container flowing through an air passage into an exhaust passage at the inner end of the exhaust passage so as to protrude into the air passage. CONSTITUTION:In a ventilation device 40, there are disposed an evaporator 10 and an evaporator fan 12 in an air passage 15 for the air in a container. An exhaust passage 56 for exhausting the air in the container and a suction passage 57 for drawing fresh air of the outside are disposed respectively above and below the evaporator 10. And a guide member 70 for introducing the air in the container flowing through the passage 15 into the passage 56 is provided at the inner end of the passage 56 so as to protrude into the passage 15 so that the air in the container is forcibly picked up by the member 70 to guide it into the passage 56. As a result, not only the static pressure of the air flow but also the dynamic pressure thereof can be utilized and hence the amount of ventilation can be increased without increasing the area of the exhaust passage. |
