Shelter ventilation system, shelter wall unit to be used in ventilation systems, shelter using the shelter ventilation system, how to build a shelter ventilation system

摘要

[Challenge] The ventilated in the shelter, and to develop a configuration that can ensure the safety when driving by manual rotation by the crank portion and safety during replacement of the main filter unit, the fan of the fan drive. [MEANS FOR SOLVING PROBLEMS] A shelter ventilation system, the partition wall 7, the through hole 13 is provided, the front chamber B side to the preprocessing filter unit 8 of the partition wall 7, the main filter part 9 provided to save chamber C side of the partition wall 7 fan driving unit 10, by providing a crank portion 11, when manually rotated by the rotation of the fan the crank portion 11 of the fan driving unit 10, the operator to manually rotate it to allow to be able to work safely, the main filter part When replacing the 9, since retraction chamber C is prevented from being contaminated, it is possible to suppress secondary exposure in the shelter, the secondary pollution to a minimum. [Selection Figure] Figure 1