Stainless steel fume hood

Stainless steel fume hood

Fume hoods are essential safety equipment in laboratories, primarily used for exhausting indoor pollutants. They are commonly used laboratory devices designed for expelling harmful gases within the lab and for cleaning and waste disposal during experiments.
The main function of the fume hood: Primarily, the fume hood is designed for exhaust. In a chemical laboratory, during experiments, harmful gases, odors, as well as flammable, explosive, and corrosive substances may be produced. To ensure the safety of users and prevent the spread of contaminants from experiments into the lab, fume hoods are used near the source of pollution. In the past, fume hoods were used sparingly, only in experiments involving harmful and dangerous gases or those generating large amounts of heat. The fume hood serves solely as an auxiliary function to the laboratory table.
The purpose of using a fume hood is to exhaust harmful gases produced during experiments, thereby protecting the health of the personnel involved. This means that the fume hood must offer high safety and operability, which requires it to have the following functions:
Release Function: The equipment should be capable of diluting harmful gases generated inside the fume hood by absorbing external air from the absorption cabinet before discharging them outdoors.
Non-backflow function: The function should ensure that the air flow generated by the exhaust fan within the fume hood does not reverse and flow back into the room. To achieve this function, it is preferable to connect one fume hood to one exhaust fan with a single pipe. For those that cannot be connected with a single pipe, they should only be connected in the same room on the same floor. The ventilation fan should be installed as close to the end of the pipe (or at the top of the floor) as possible.
Isolation Feature: A non-sliding glass viewport should be installed in front of the fume hood to separate the interior and exterior of the hood.
Supplementary Function: Should be equipped with a channel or alternative device to draw in air from outside the fume hood when releasing harmful gases.
Wind speed control function: An intake speed is required to prevent harmful gases from escaping.
Heat and corrosion-resistant properties: Some fume hoods require the installation of electric furnaces, and some experiments produce a large amount of corrosive acidic and alkaline gases. The countertops, lining, side panels, and selected water nozzles, gas nozzles, etc., of the fume hood should all have corrosion-resistant functions.