The present invention relates to a dock shelter module that is disposed at a side of a warehouse and connects the inside and outside of the warehouse, dock shelter module comprising: a top frame; a pair of side frames coupled to both sides of the top frame, longitudinally extending, and forming a loading-unloading space in cooperation with the top frame; a bottom frame coupled to the lower ends of the side frames and having a dock leveler seated thereon; a first gate coupled to the top frame, disposed at the front of the loading-unloading space, and opening and closing the outside of the warehouse and the loading-unloading space; a second gate coupled to the top frame, disposed at the rear of the loading-unloading space, and opening and closing the inside of the warehouse and the loading-unloading space; and an air curtain generator installed on the bottom of the top frame between the first gate and the second gate, and forming an air curtain in the loading-unloading space in accordance with whether the first gate and the second gate are opened and closed.

A purge controlling system includes a purge module and a control module. The purge module is arranged in the load port and is electrically connected with the control module. The purge module includes an air curtain unit, a flow control unit and a sensing unit. The control module controls the purge module to provide adequate gas flow of purge gas into the air curtain unit and form a gas curtain according to the displacement value of the door assembly.

An active airflow inhibiting apparatus for an entranceway comprises: a structure positioned adjacent an entranceway of a building and defines a passage therethrough for accessing the entranceway. The structure defines at least one plenum chamber and first and second outlet slots fluidically coupled to the plenum chamber. A fan fluidically connected to the plenum chamber supplies an airflow to the plenum chamber in order to selectively form a jet of air from the first outlet slot in a first mode of operation and from the second outlet slot in a second mode of operation The first and second outlet slots are configured so that the respective jets of air are each directed towards a centre of the structure, with the jet of air from the first outlet slot being directed away from the entranceway and the jet of air from the second outlet slot being directed towards the entranceway.

A closed gas circulation system may include a sealed plenum, circulation fans, and a fan filter unit (FFU) inlet to contain, filter, condition, and re-circulate a gas through a chamber of an interface tool. The gas provided to the chamber is maintained in a conditioned environment in the closed gas circulation system as opposed to introducing external air into the chamber through the FFU inlet. This enables precise control over the relative humidity and oxygen concentration of the gas used in the chamber, which reduces the oxidation of semiconductor wafers that are transferred through the chamber. The closed gas circulation system may also include an air-flow rectifier, a return vent, and one or more vacuum pumps to form a downflow of collimated gas in the chamber and to automatically control the feed-forward pressure and flow of gas through the chamber and the sealed plenum.

A method for controlling a climate-conditioned gas-flow in a freight container comprises providing (S2) of a climate-conditioned gas-flow into a cargo compartment defined by a floor, a ceiling and walls, of which one comprises a door. Measurements of climate conditions are obtained (S4) in a gas-flow going into the climate arrangement, going out from the climate arrangement and/or the cargo compartment. The climate-conditioned gas-flow is controlled (S6) based on the measurements of climate conditions. The climate-conditioned gas-flow is provided in vicinity of the ceiling, whereby a part of the climate-conditioned gas-flow reaches the container wall comprising a door. A door position is monitored (S8), detecting whether the door is open or closed. When the door is monitored to be open, the climate-conditioned gas-flow is deviated (S12) as an adaptive protective gas flow over the opening of the open door. A freight container for the method is also disclosed.