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Explosion-proof FFU
Explosion-proof FFUThe following is a detailed introduction to explosion-proof FFU:summarize Definition: An explosion-proof FFU, the full name of an explosion-proof Fan Filter Unit, is a self-powered end air supply device with a filtration function that can operate safely in an environment with flammable and explosive risks. It provides clean air and particulate filtration control for a clean environment. Application scenario: Widely used in semiconductor, electronics, flat panel display, and disk drive manufacturers, as well as optical, biological industries, and other places with strict control requirements for air pollution and flammable and explosive materials. Structure and principle Main structural component Box: usually made of stainless steel, aluminum plated zinc plate or cold plate paint and other materials, with good strength, corrosion resistance, and explosion-proof performance, used to support fans, wind deflectors, and deflectors. Fan: As a core component responsible for producing air flow and driving the air purification process, generally choose an explosion-proof motor, single AC, DC, three AC, or other types. Filter: Including the initial effect filter of the air intake and the high efficiency/ultra-high efficiency filter of the air outlet, which is used to filter the dust, bacteria, and other pollutants in the air to provide clean air. Deflector: built into the box inside the fan below the four sides, is the airflow equalization device so that the airflow blown out of the fan is evenly spread out. Control components: For AC explosion-proof FFU, commonly used five-speed governor or stepless governor; The control chip of the DC system is embedded in the motor, and remote control is realized using special control software, computer, control gateway, and network line. Working principle: First of all, the built-in fan produces airflow and inhales indoor air through the air inlet; Secondly, the air is filtered through the efficiency filter to remove dust, bacteria, and other particles; Finally, the filtered clean air is sent to the room at a constant speed of 0.45m/s±20% at the entire outlet surface to complete the air purification process. peculiarity Explosion-proof performance: The use of explosion-proof motors, explosion-proof electrical components special sealing design, etc., can effectively prevent the electrical spark generated during the operation of the equipment, high temperatures, and other causes of the burning or explosion of flammable and explosive materials around. Low noise: By optimizing the fan design, using shock absorption measures and high-quality sound insulation materials, the noise generated during the operation of explosion-proof FFU is low, generally between 42-56dBA, creating a relatively quiet working environment for staff. Uniform wind speed: unique deflector and outlet design, so that clean air can be evenly sent out at the outlet surface, to ensure air cleanliness and airflow stability in the working area. Low energy consumption: The selection of energy-efficient fans and motors, can be adjusted according to actual needs while meeting the requirements of air purification, reducing energy consumption, and saving operating costs. High static pressure: It can operate stably at high static pressure for a long time, ensuring that air can overcome pipe resistance and filter resistance, and effectively deliver to areas requiring clean air. Maintenance-free or easy maintenance: Using high-quality components and materials, the equipment has high reliability and long service life, and the structural design is reasonable, easy to carry out daily inspection, cleaning, and filter replacement maintenance work. Key points of selection Air volume demand: according to the space size of the use place, the number of air exchange requirements, and other factors, calculate the required air volume, and select the appropriate air volume explosion-proof FFU. Filter efficiency: According to the requirements of cleanliness, choose a filter with the corresponding filtration efficiency, such as a high-efficiency filter (HEPA) or ultra-high-efficiency filter (ULPA). Explosion-proof grade: According to the type and danger degree of flammable and explosive substances in the use environment, explosion-proof FFU with appropriate explosion-proof grade is selected to ensure the safe operation of the equipment in the environment. Installation method: According to the building structure and layout of the site, determine the installation method of explosion-proof FFU, such as top installation, side installation, etc., to facilitate the installation and use of equipment. Control function: According to the actual needs, select the explosion-proof FFU with appropriate control functions, such as single condition control, multi-condition grade control, or stepless regulation, so as to achieve flexible control of equipment operation. |
