At present, many hospitals in the construction of clean operating rooms, ICU and other clean hands after the use of some problems, such as chest tightness, heavy odor, noise and other issues, there is no conventional air-conditioning feel comfortable.
For these problems, several reasons for these problems were found in the later investigation.
1. The area of fresh air outlet is too small. In some hospitals, the size of the new wind and rain-proof blinds is the same as that of the fresh air pipeline. As a result, the fresh air is blocked quickly, the supply of fresh air is insufficient, and the wind speed of the fresh air outlet is too high and the noise is very high.
2. The exhaust volume is too small and the exhaust mode is single.
3. The distribution of air supply and return is uneven and the air flow is unbalanced.

4. Excessive noise.

Solution:
1. Fresh air design must be adequate. Need to consider the elimination of indoor odor, heat and other exhaust air, it is best to design a frequency conversion fresh air volume regulation mode, and the exhaust air volume proportional regulation. The design of fresh air outlet is scientific, considering the effective area of louvered air outlet and the dust capacity of filter net.
2. Considering the indoor use function, especially in the area where ICU personnel are concentrated, it is necessary to consider the heat and odor of medical staff in high-intensity working condition, personnel dining and patients'personal hygiene. It is better to design an intelligent variable frequency air volume control system.
3. The design of air supply and return system should consider the control of air speed reasonably, and the layout of air supply and return outlets in the room must be balanced and uniform. Valves should be installed in each air supply outlet and branch of air return outlet.
4. The causes of excessive noise are mainly caused by unreasonable design, unscientific selection and improper construction. Major points are as follows:
(1) The wind pressure of equipment selection should be reasonable, neither too large nor too small.
(2) The back-bend low-noise centrifugal fan is selected for the fan.
(3) To install double-chamber microporous plate muffler on the main air supply and return pipe, it is necessary to install a straight silencing section and a silencing elbow.
(4) The air-conditioning equipment should be as far away from the use area as possible.
(5) Noise should be considered in the selection and design of air ducts, and the flow rate should not be too high.
(6) Make an anechoic static pressure box at the intersection of main air supply and return pipes. The net height of the static pressure box is not less than 600 mm.
(7) When choosing the type of return air outlet, the wind speed of the effective area of the air outlet must be considered, and the size should be larger as far as possible.
As a technical enterprise focusing on the design, research and development, construction and installation of hospital operating room purification, dust-free workshop purification, laboratory purification and other engineering projects in Shandong Province, Edward Purification has always been firmly on the road of professional purification engineering construction and development, and is a truly trustworthy professional operating room for domestic enterprises. Purification implementer! For more knowledge of medical purification industry, please pay attention to Wechat Public No. Aide-188 (Ed Purification and Oxygen Supply)