Fan filter unit and dust-free room air purification system

An air purification system, clean room technology, applied in air conditioning systems, machines/engines, chemical instruments and methods, etc., can solve problems such as failure to reach service life

Active Publication Date: 2013-01-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the FFU is scrapped and cannot be used due to the filter being blocked by dust, so the rated service life is often not reached

Method used

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  • Fan filter unit and dust-free room air purification system
  • Fan filter unit and dust-free room air purification system

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Embodiment Construction

[0018] The invention discloses an air purification system for a clean room. The clean room air purification system includes a production floor and a fan filter unit connected to the production floor. The fan filter unit includes a fan and a filter screen coupled with the air inlet of the fan. The air inlet of the filter screen is also provided with an auxiliary filter. The minimum diameter of the dust that can be filtered by the auxiliary filter is larger than the minimum diameter of the dust that can be filtered by the filter.

[0019] The inventor found that when the dust particles enter the ventilation ducts, the large particles will be deposited first in the filter screen, and then the small particles will adhere to the surface of the large particles, so that the dust will accumulate in layers and will soon block the ducts and filters. net, shortening the service life of fan filter units and cleanroom air cleaning systems. The present invention adds an auxiliary filter sc...

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Abstract

The invention discloses a fan filter unit of and a dust-free room air purification system. The fan filter unit comprises a fan and a filter screen which is coupled with an air inlet of the fan, wherein an auxiliary filter screen is arranged at an air inlet of the filter screen; and the minimum diameter of dust which can be filtered by the auxiliary filter screen is greater than the minimum diameter of dust which can be filtered by the filter screen. The fan filter unit adopts double filtration, so that large and small particles are separately filtered, the filtration efficiency is improved, the service life of the fan filter unit (FFU) is prolonged, the replacement frequency and difficulty of a filter system are reduced, the consumptive material cost of the FFU is reduced, and then the service life of the entire dust-free air purification system is prolonged.

Description

technical field [0001] The invention relates to the field of electronic product manufacturing, and more specifically relates to a fan filter unit and a clean room air purification system. Background technique [0002] In order to prevent dust particles from affecting product quality, many electronic products generally build a clean room to filter solid particles such as dust in the air. see figure 1 The clean room is equipped with fan filter units (Fan Filter Units, hereinafter referred to as FFU) on the top of the building, that is, the fan and filter (high efficiency filter (HEPA) or ultra high efficiency filter (ULPA)) are combined to form a self-provided Power end purification equipment. The fan sucks air from the top of the FFU and filters it through HEPA, and the filtered clean air is evenly sent out at a wind speed of 0.45m / s±20% on the entire air outlet surface. After the FFU filters the particles in the air, the large particles are blocked inside the FFU, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/70B01D50/00F24F8/108
CPCF24F3/1603F24F13/28F04D29/703F24F3/161F24F3/167F24F8/108
Inventor 杨卫兵吴俊豪林昆贤汪永强舒志优齐明虎陈增宏郭振华蒋运芍
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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