Low steady-speed radial flow clean room air-conditioning air supply and return system

Abstract

The invention relates to a low steady-speed radial flow clean room air-conditioning air supply and return system which comprises a radial flow air supply channel device, a wall-mounted air return channel device, an air-conditioning outlet static pressure box, an air-conditioning air return port static pressure box and an air-conditioning fresh air port filtering device, the radial flow air supply channel device comprises a clean room roof, a static pressure box type air supply channel, a pressure equalizing partition plate, an arc-shaped radial flow cover, a damping layer and a high efficiency filter bank, and the wall-mounted air return channel device comprises a sandwich wall type air return duct and a filtering device mounted at an air return port of the lower end of the sandwich wall type air return duct. The air supply and return system has the advantages that the operation resistance of the air supply and return system is reduced, the diffusion speed of harmful suspended particles in a clean room is the lowest, fewer high efficiency filter banks are used, the clean room is low in construction investment, energy-saving in operation and convenient to maintain, the air cleanliness class of the clean room is improved by more than 30% as compared with that of a mixed airflow clean room, clean time can be shortened by more than 40%, and airflow in the clean room is reasonably distributed.

Description

technical field [0001] The invention relates to a low-speed, radial-flow clean room air-conditioning supply and return system, which belongs to the technical field of indoor air cleanliness and is suitable for rooms that require cleanliness, such as workshops for medicine and food production, and workshops for fine processing and manufacturing enterprises. And the sterile ward of the hospital, etc. Background technique [0002] At present, the commonly used turbulent flow clean room air-conditioning supply and return air system adopts the scheme of arranging a certain number of high-efficiency filters on the top of the clean room. After filtering, the clean air emitted from the indoor diffuser hood is mixed with the original air in the clean room. The pollutants in the original air have been "diluted". Because the high-efficiency filter on the top of the clean room uses "point distribution", the indoor air distribution is very uneven. Although the cost and operating cost o...

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Problems solved by technology

[0006] The disadvantage of the unidirectional flow clean room is that the cost is too high, and the construction and maintenance of the unidirectional flow clean room are difficult

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