Ventilation pipe design points:

◇ A ventilator and a fan, with a single pipe connection is the best way.

◇ Can not be connected with a single pipe, only the same floor in the same room can be used to connect with each other.

◇ The fan is installed at the end of the pipe as far as possible (the upper part of the roof).

◇ The shorter the pipe length, the better.

◇ A ventilator connected to the fume hood burning better. The exhaust channel is as upright as possible, and the higher the channel, the better.

◇ If it is necessary to change the wind speed of the duct, the corresponding frequency conversion adjustment system should be configured.

◇ The end of the exhaust channel should avoid the air supply port of the air supply pipeline as far as possible to prevent the discharged harmful gas from being sent to the fume hood through the exhaust pipe.

How to choose a fume hood

The fume hood is not a separate piece of equipment, and changes in the external environment will affect the performance of the fume hood. At the same time, the fume hood and its control system will also affect the surrounding, when you choose the fume hood:

First of all: must take into account the factors of the entire system, such as: laboratory space, building through the risk control system, exhaust pipe arrangement and fume hood placement, etc., Dalian Ruixin R & D personnel and system engineers are willing to work with you to provide a safe and comfortable overall design and planning for your laboratory.

Second: You need to determine what type of fume hood you need, when choosing, usually you can measure according to the following factors:

1. Loading part:

There are three styles: standard, low table, and floor

Whether the surface wind speed of the fume hood meets the safety wind speed requirements stipulated in international standards: 0.5m/s(international standards stipulate that only the surface wind speed reaches 0.5m/s can effectively capture the harmful gases in the cabinet)

Whether the opening height of the fume hood meets your requirements for operating space

Risk control system: constant air volume, variable air volume or adaptive control system

Lining material: anti-beit plate, epoxy resin plate.

The raw material of the adjusting door is safety glass, and its design is in line with human mechanics, so that the operator can pull freely

2. Countertop part: Whether the countertop is designed with a safe disc, so as to facilitate the user to clean the countertop and prevent the leakage of toxic liquid

Whether the material of the table meets the needs of your experiment to resist the corresponding extra etching and high temperature

Whether the cup and sink are installed, and the installation location is reasonable.

Whether the design of the air outlet is reasonable

3. Low cabinet part:

Whether the material is strong and durable, whether it is a fireproof material, and whether it can resist the erosion of the acid-alkali environment of the laboratory

The power supply is reasonable and safe

Whether it is easy to repair water, electricity and gas systems

Does the bottom cabinet need to be pumped so that you can store volatile medicines

After you have basically selected the model, style and size of the hood, you can determine what you need according to the following conditions

4. Accessories:

Water source: distilled water, pure water or reverse osmosis water, etc

Gas source: nitrogen, oxygen or air, etc

The choice of electrical system should be considered: model, voltage, explosion-proof, durability and so on

For aesthetic reasons, whether sealing plates are required