上海兢美实验室设备有限公司

Ventilation

I. main objectives of laboratory air flow control

1. Safety of operators and environment

The main consideration is to capture and isolate the harmful gas, ensure the wind speed of the fume hood, prevent the harmful gas overflow, and endanger the safety of the operator. Lab, guarantee the negative pressure control right airflow direction, avoiding the cross infection of the room, laboratory supply fresh air for the whole, ensure that the laboratory to meet in the wind, to prevent the harmful gas in long-term presence in the laboratory.

2. Comfortable working environment

The appropriate new wind ensures a certain amount of air change, while the temperature in the room is well controlled, providing a comfortable working environment for the operator.

Ii.Venturi air volume control valve

Venturi air volume control valve is a high precision, high - speed reaction pressure - free air volume control equipment. The self-adjustable mechanical structure with the control of the static pressure change in the pipeline is not affected by the static pressure change. The operation of other variable air volume equipment in the laboratory caused the change of static pressure in the pipe and the venturi valve was almost immediately responsive. This rapid pressure independence ensures a stable solution to avoid causing the entire system to oscillate. Rapid and stable control prevents the overflow of toxic particles when the door opens. Always maintain the inlet surface of the fume hood is 0.5 m/s.