How the fume hood works

December 02, 2023

Disposable Vape, Electronic Cigarettes, vapeHow the fume hood works

In a simple manner, a fume hood can be understood as an iron cabinet and a fan. The gas entering the iron cabinet is expelled by the fan and released safely into the atmosphere so that workers and students who come into contact with the gas can be protected. Complex fume hood operation becomes simple and easy to understand. As we know, many mutated gases are easily decomposed and weakened, and toxic gases need to be treated before they can be placed in the atmosphere. First, have proper air thrust. It is called "the speed at which the gas moves in a certain direction in the fume hood" (referred to as the wind speed). It is considered that the reasonable wind speed is generally 0.5 m / s. In order to maintain a certain wind speed, the amount of air or the capacity of the exhaust pipe It is required. The capacity of the exhaust pipe is measured by how many cubic meters per hour. The wind speed and the capacity of the exhaust pipe are subject to the type of fume hood, the position of the laboratory of the fume hood, and the room gas dynamic balance system. The influence of the glass window of the fume hood also affects the wind speed of the gas. For the glass window of the fume hood, he is a transparent position to block the gas spill, thus making the user of the fume hood dangerous. The agent and the gas are isolated. The air circulation mode of entering the fume hood is affected by the air guiding device. Under the glass window of the fume hood, the air guiding device enhances the air flow into the fume hood, thereby improving ventilation. The working efficiency of the cabinet. (Modern fume hoods feature the same air flow at the left and right ends).

The deflector is located at the bottom of the fume hood. It controls the airflow of the fume hood. The diversion device is located at a position that determines the efficiency of the fume hood. The user can change the airflow outflow passage of the fume hood through minor adjustments to meet the actual situation. Operational requirements. This adjustment should not exceed 5% of the entire exhaust air volume. The adjustment of the flow guiding device at the bottom corner of the fume hood also makes the overall ventilation of the laboratory uniform to improve the safety performance of the fume hood.

SW-TFG-12 type fume hood

SW-TFG series fume hood is a kind of laboratory common equipment used in the laboratory, which needs to discharge harmful gases and need to clean the river sewage during the experiment.

working principle

A system of water, electricity, gas and ventilation, equipped with multi-function power sockets, to facilitate the trial of other electrical equipment during the experiment. The quick-opening valve is convenient for water use during the experiment. The front baffle is a glass door that can be moved up and down, and the top is a low-speed exhaust fan, which can smoothly discharge harmful and odorous gases during the experiment. The bottom of the working face is equipped with a stainless steel sink, which can discharge the disinfectant and experimental residues from a drain tank by washing, keeping the experimental environment safe and reliable.

Structural features

The frame is made of 50% fireproof MDF material, and the experimental area is made of stainless steel veneer. It has good sealing, beautiful appearance, and is durable.

Technical Parameters

model

SW-TFG-12

Exhaust wind speed

Adjustable in the range of 0.3-0.6m/s

average wind speed

0.25-0.45m/s

Inlet pressure

>0.5Pax

power supply

AC, single phase 220V/50HZ (200W)

Maximum power consumption