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Basic Knowledge of “KOKENLAMINAR”

  • Our push-pull local ventilation system compared to the conventional local exhaust ventilation system

In our push-pull local ventilation system a push hood blows a uniformed laminar air flow having the same vector in the air to capture and exhaust hazardous substances which are generated in the workplace through a pull-hood to the outside.

Comparatively speaking, the push-pull local ventilation system can capture contaminants in a wider range and use less airflow than the local exhaust ventilation system that removes contaminants only by drawing the contaminated air.

In addition, ventilation is made possible without having a workspace surrounded by fences, which can make an effective use of the space and offer a sense of openness to workers for their increased workability.

The structure and performance requirements of open type push-pull local ventilation system are defined in various regulations of the Occupational Safety and Health Act of Japan.

Our push-pull local ventilation system compared to the conventional local exhaust ventilation system

  • Types of push-pull local ventilation system

According to the direction of air flow, there are three types as follows:

Types of push-pull local ventilation system

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