All-steel ventilation cabinet

Fume hoods are essential safety equipment in laboratories, primarily used for expelling indoor waste gases. They are commonly used laboratory equipment designed for expelling harmful gases in lab settings and for cleaning and waste disposal during experiments.
The main function of the fume hood: Primarily, the fume hood serves as an exhaust system. In chemical laboratories, during experiments, harmful gases, odors, and flammable, explosive, or corrosive substances are produced. To ensure the safety of users and prevent the spread of pollutants from experiments into the laboratory, a fume hood must be used near the source of contamination. Historically, fume hoods were used sparingly, only in experiments involving hazardous and dangerous gases or those generating large amounts of heat. The fume hood only acts as an auxiliary function to the lab table.
The purpose of using a fume hood is to exhaust harmful gases produced during experiments, thereby protecting the health of the experimenters. This means that the fume hood must have high safety and operability, which requires it to possess the following functions:
Release Function: The unit should be equipped with a mechanism to dilute harmful gases generated within the fume hood by absorbing external air from outside the 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: The fume hood should be equipped with a non-sliding glass window in front to separate the inside from the outside of the fume hood.
Additional Feature: Must have a channel or alternative device to draw air from outside the fume hood when exhausting harmful gases.
Airflow control function: An intake speed is required to prevent the release of harmful gases.
Heat and corrosion resistance: Some fume hoods require the installation of electric furnaces, and some experiments produce a large amount of acidic and alkaline harmful gases with strong corrosive properties. The countertop, lining, side panels, and selected water and gas nozzles of the fume hood should all possess corrosion-resistant functions.