Cleanroom limit noise spectrum should be used octave sound level too; each band sound pressure level should be less than specified in Table 3.3.2. Flat, profile layout clean the plant should be considered noise control requirements, the envelope should have good sound insulation performance, and should make the parts close to the amount of noise. Various equipment clean room should use low-noise products. For radiated noise exceeds the value of the clean room allows devices to be provided special soundproof facilities (such as between acoustic, acoustic enclosures, etc.). Air purification system noise exceeds the allowable value adjustment should take noise, noise, noise vibration and other control measures. In addition to the accident outside exhaust purification plant manufacturers respond clean room ventilation system noise design. Clean air conditioning systems, according to the interior noise level requirements, wind speed inside the duct should be chosen according to the following provisions: a total duct 6 to 10 m / sec. Second, no delivery, return air duct branch 6 to 8 m / sec. Third, there is delivery, return air duct winds 3 to 6 m / sec. Noise control design must be considered clean room air cleanliness requirements of the production environment purification plant program, shall not affect the control of noise purification clean room conditions. When the production process is only required to achieve higher air cleanliness in the clean room at the local workspace, the airflow should be designed so that clean air flows first through the work area, or the formation of different air flow patterns in different areas and clean air clean room grade clean work area, of the type in Figure 5.3.4-1,5.3.4-2 respectively. Laminar flow clean bench clean room should not be set; turbulence clean room can be set to clean table, but its location away from the return air. When there is a local clean indoor air exhaust device, its location should be located in the work area downwind airflow. Air purification air purification air cleanliness of each grade, shall be used for the early effect, in effect, high efficiency air filter three filters. Note 1: 100 professional purification plant, 000 air purification, can be sub-generation high-efficiency air filter air filters. Determining the centralized or decentralized clean air-conditioning system, should be considered the characteristics of the production process and clean room air cleanliness level, size, location and other factors. Where the production process of continuous, clean room area is large, centralized location and noise control and vibration control demanding clean room, should adopt a centralized air conditioning system purification. Clean plant decoration | purification plant | New North purification by northern Henan purification equipment installed Limited. Northern Henan purification equipment installed Ltd. (www.xinbeifangjh.com/) strong, credible, environmental projects in Henan Xinxiang cooperation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new north into the brilliant purify and you work for a better future!