Abstract: A plant cultivation apparatus according to the present technology includes a cultivation space where a cultivation environment is controllable, and a plurality of cultivation shelves disposed in the cultivation space. An air conditioner for supplying airflow to the cultivation shelves is provided in an upper region of the cultivation space. An induced draft fan for inducing the airflow supplied from the air conditioner to the cultivation shelves is provided at least at an end of the cultivation space. The induced draft fan is configured to induce the airflow supplied from the air conditioner to the cultivation shelves.

Abstract: A plant cultivation apparatus according to the present technology includes a cultivation space where a cultivation environment is controllable, and a plurality of cultivation shelves disposed in the cultivation space. An air conditioner for supplying airflow to the cultivation shelves is provided in an upper region of the cultivation space. An induced draft fan for inducing the airflow supplied from the air conditioner to the cultivation shelves is provided at least at an end of the cultivation space. The induced draft fan is configured to induce the airflow supplied from the air conditioner to the cultivation shelves.

Abstract: The present invention is to provide a backflow prevention apparatus of a clean room for solving a negative pressure point in the clean room so as to prevent a backflow from underfloor of the clean room. An intake port sucks the air of an underfloor chamber, a fan supplies the air to an upper part in the apparatus, and a blowoff port is installed on a side surface of an upper-floor part of the apparatus for supplying the air into the clean room. By supplying the air of the underfloor chamber into the clean room, the backflow from the underfloor chamber into the clean room is prevented.

Abstract: The present invention is to provide a backflow prevention apparatus of a clean room for solving a negative pressure point in the clean room so as to prevent a backflow from underfloor of the clean room. An intake port for suctioning the air of an underfloor chamber, a fan for supplying the air to an upper part in the apparatus, and a blowoff port installed on a side surface of an upper-floor part of the apparatus for supplying the air into the clean room are provided. By supplying the air of the underfloor chamber into the clean room, the backflow from the underfloor chamber into the clean room is prevented.