Installation of fresh air system in Chengdu-Make a design plan in advance

The distance between outdoor air inlet and exhaust outlet should not be too close, or as far as possible, otherwise the cleanliness of air inlet will be affected; From the outdoor air inlet to 1 meters behind the main engine, you can't turn or open a new air outlet, otherwise it will affect the wind speed; Because the return air part is negative pressure, the pipeline from the indoor return air port to the fan part should be as short as possible; Try to put the fan in the kitchen and bathroom. One is that there will be some noise when the fan is working, especially when it is in strong gear. In addition, in most cases, the fan is the part that needs the most ceiling height.

Install fresh air system in Chengdu-the return air/air outlet should not be installed in the bathroom as far as possible

Because these places will produce pollutants with very high concentration or air with very high humidity, it is necessary to exhaust indoor dirty air with temporary large air volume, and ordinary exhaust fans/range hoods should be used instead of continuous ventilation system; The air inlet can be installed in the bedroom or living room. In an independent space, the farthest distance between the air inlet and the air return outlet is the best, so as to achieve the maximum circulation. Usually, the diagonal of the room is selected (downward delivery and upward return). The installation method should meet the requirements of ceiling height as much as possible; The position of punching holes through walls cannot destroy the whole structure of the room; It is best to install the ground air outlet at the bottom of the wall instead of the ground (easy to enter dust or leak water).

Installation of fresh air system in Chengdu-The installation position of the main engine needs to be provided with an access opening

It is convenient to replace the filter screen, repair and clean, etc. The part from the outdoor air inlet to the fan should be as straight as possible. If it is bent, dust will easily deposit in the pipe wall, and the filter screen will be blocked locally more quickly. The pipe should be as straight as possible. For PVC pipes, two 45-degree pipes should be used instead of 91-degree angle air pipes, and the tee should be inclined to reduce wind resistance.

I hope Zhongyiju's answer can help you.