How does a clean air conditioning purification unit maintain constant air supply parameters to ensure the stability of cleanroom processes?
Publish Time: 2026-02-03
In fields with extremely stringent environmental control requirements, such as semiconductor manufacturing, biomedicine, and precision instruments, the air quality in cleanrooms directly determines product yield and process success. As the core equipment for cleanroom air handling, one of the core missions of the clean air conditioning purification unit is to continuously and stably output clean air with constant airflow, constant pressure difference, and constant temperature and humidity. Modern purification devices, represented by the Jn series supply and exhaust fan enclosures and booster fan enclosures, construct a highly reliable air supply parameter stabilization system through structural sealing, multi-stage filtration configuration, intelligent fan control, and system collaborative design, providing a solid guarantee for the stability of cleanroom processes.1. High-Sealing Enclosure Structure: Eliminating Parameter Leakage and External InterferenceThe enclosure of the clean air conditioning purification unit is assembled from composite sandwich color steel plates. All seams are embedded with self-adhesive sealing gaskets and are sealed by surrounding purification aluminum profiles. This seamless design not only boasts excellent thermal insulation and corrosion resistance, but more importantly, it effectively prevents unfiltered external air from infiltrating or internal clean air from leaking. In positive pressure cleanrooms, even the smallest gap can lead to pressure fluctuations and particle intrusion; while in negative pressure laboratories, it can cause harmful aerosols to escape. The high sealing performance of the Jn series fan box ensures the integrity of the air supply path, preventing key parameters such as airflow and pressure from decreasing due to air leakage, thus laying the physical foundation for constant airflow.2. Multi-stage Filtration and Modular Configuration: Precisely Matching Cleanliness Level RequirementsTo adapt to different cleanliness levels, the device can be flexibly configured with pre-filters, medium-efficiency filters, and even high-efficiency filters. Bag-type pre-/medium-efficiency filters effectively intercept large dust particles, extending the life of the terminal high-efficiency filter; while high-efficiency filters remove particles ≥0.3μm, ensuring that the air supply cleanliness meets standards. More importantly, changes in the resistance of the filtration system directly affect the stability of the airflow. Therefore, the device is customized during the design phase according to the user's required airflow, total pressure, and power, with sufficient fan head margin reserved. Meanwhile, some high-end configurations integrate differential pressure sensors to monitor filter clogging in real time, providing a basis for variable frequency control and preventing airflow reduction due to filter blockage.3. Low-noise fan and variable frequency control: Dynamically maintaining constant airflow and differential pressureThe Jn series is equipped with a low-noise centrifugal fan that not only operates smoothly and with minimal vibration, but more importantly, it can be linked with a variable frequency drive system. In actual operation, system resistance fluctuates constantly due to filter dust accumulation, valve adjustment, or changes in duct resistance. Traditional fixed-frequency fans would cause airflow to deviate significantly from the set value. Variable frequency clean air conditioning units, through feedback signals, automatically adjust fan speed and dynamically compensate for resistance changes, thereby precisely maintaining a constant airflow and room pressure difference. For example, in operating rooms or chip lithography areas, pressure difference fluctuations of ±5Pa can cause cross-contamination; variable frequency pressure stabilization technology is key to achieving "precise micro-pressure difference control."The clean air conditioning purification unit's constant control of airflow parameters is the result of a deep integration of mechanical, material, sensing, and control technologies. From the highly sealed enclosure to multi-stage filtration, from low-noise fans to intelligent frequency conversion, every aspect serves the core objective of "stability." The Jn series supply and exhaust fan enclosures and booster fan enclosures, with their compact structure, flexible configuration, and reliable operation, not only solve engineering problems such as high duct resistance and insufficient airflow, but also safeguard the air quality of cleanrooms at a microscopic level.
