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Form of clean room air purification system
2024/8/30
Laminar flow clean room means that the air flows from one side to the other side at the same speed, so that the dust particles or bacteria generated in the room will not spread around and be flat pushed out of the room or filtered by the return air outlet filter, and achieve good bacterialization effect. This method is more suitable for the industry clean room with high cleanliness level requirements. Turbulent clean room refers to the air from the top of the clean room through the combined air conditioning unit of the junior high efficiency filter filter, pressurized by the air pipe through the insulation is dispersed to each room, and the air is sent to the clean room through the air supply outlet to achieve the effect of purification, the air supply is more common, the return air is generally done in the corner or the bottom of the column, the overall return air.
Filter sterilization technology: The air to achieve the clean room design cleanliness mainly depends on or exceeds the filter equipment to deliver clean air to a specific environment and maintain the cleanliness of the air. Air filtration clean technology principle: mesh block retention, screen hole retention, electrostatic attraction retention, inertial collision and Brownian motion retention. Therefore, air filtration cleaning technology is the result of a comprehensive effect.
Filter material structure of the filter: The filter material used in the end filter of the biological clean room air conditioning system is mostly or ultrafiltration material, and the filter material used is: glass fiber filter material, paper pulp filter material, perchloride fiber filter material, etc. The retention rate of filter HEPA for particles of 0.5um in the air can reach 90% to 99%, which is more than 99.999% of particles of 0.3um that can be blocked by filter ULPA.
Two, clean room local high cleanliness purification
1, 100 laminar flow cover:
Hundred-stage laminar flow hoods are commonly used in local air purification devices in hospitals, pharmaceutical and laboratory research industries. Generally can form a vertical laminar flow mode, surrounded by transparent curtain. A high degree of cleanliness is maintained throughout the area. This hundred-level laminar flow cover can be used for the treatment and protection of patients with immunocompromised function, so it is also called aseptic bed laminar flow cover.
2, 100 super clean workbench:
The use of horizontal or vertical laminar flow to purify the air in the box can make the purification in the operating table reach a level. It has become an essential laboratory equipment in today's research fields of medicine, biological science, food science and electronic science.
3, electrostatic adsorption purification technology:
Electrostatic adsorption is the use of industrial electric dust removal principle, in the miniaturization technology has been innovative. A graded wire device is formed by using a thin wire discharge electrode and a honeycomb aluminum box collector. The mirror image force charged adsorption was used. At present, there is a three-stage purification device, that is, pre-filtration -- filtration -- activated carbon adsorption, combined positive ion electrostatic adsorption to remove bacteria, and the use of large air volume air purification to ensure the number of indoor air purification, better solve the problem of continuous air disinfection in key departments of hospitals such as operating rooms, ICU, maternal and child wards, hemodialysis rooms, etc. It can make the hospital room clean room air purification degree of 100,000 ~ 10,000.
4, negative ion purification technology:
Negative ions are a negatively charged chemical group, reversible changes can occur, the existence time is very short, and it has no ability to kill microorganisms, mainly by the combination of charged ions with particles in the air, especially microbial particles, to form a number of particles condensed to become large and rapidly settling, so that the air to achieve the purpose of purification. Only when the negative ions in the air have certain chemical properties, such as active oxygen ions, they have the ability to harm proteins and kill microorganisms, so the negative ions have a relatively limited ability to purify the air, and the clearance rate of microbial particles in the air can only reach 70% to 90%.
Three, several ways of plane configuration of clean room
1. Outer corridor surround type:
The outer corridor can have Windows or no Windows to double as visiting and placing some equipment, while the general use of 100,000 and the outer window must be a double-layer sealed window.
2, corridor surround type:
The clean room is located outside, and the corridor is located inside, the cleanliness level of this corridor generally needs to be higher, even the same level as the clean room, in addition, when the clean room is located outside, it should be noted that there is no external window setting.
3. Two-end type:
The clean room is arranged on one side, and the clean room and auxiliary room are arranged on the other side.
4. Core type:
In order to save land and shorten the pipeline, the dust-free area can be located in the center, surrounded by a variety of auxiliary rooms and hidden pipeline space, to reduce the heat exchange with the outside gas.
