Pressure gradient is a core control element of a cleanroom's controlled environment, and a key differentiator between clean spaces and ordinary ventilated spaces. Essentially, it constructs a directional airflow barrier through a controllable pressure difference, blocking the migration of outdoor pollutants, low-cleanliness particles, and microorganisms from the high-cleanliness core area, ensuring the stability of the cleanroom's classification and compliance with production processes. This article starts from the underlying principles, outlining the operational logic of pressure gradient and analyzing the core causes of high-frequency failures in engineering operation and maintenance.

A complete modular cleanroom is based on a modular enclosure structure and is equipped with personnel and material entry and exit purification equipment. It relies on purification air conditioning, fresh air system and three-stage filtration device to achieve air purification treatment. It is supplemented by pressure difference, temperature and humidity, cleanliness monitoring equipment, clean lighting and disinfection system to ensure stable and controllable environment. At the same time, special purification equipment can be selected according to the production process requirements of various industries. The overall assembly is flexible and full-featured, which can effectively maintain the indoor cleanliness level, pressure gradient and environmental parameters, and meet the requirements of various sterile and dust-free production and experimental use.