Clean Bench for Cleanroom
A clean bench for a cleanroom is a localized air purification
device designed to provide a highly clean environment in specific
areas. It is widely used in industries such as pharmaceuticals,
biotechnology, food processing, and optoelectronics. Its core
function is to remove airborne particles, bacteria, and other
contaminants through an efficient filtration system, ensuring a
sterile workspace.
Working Principle
The clean bench draws in ambient air via a fan, which first passes
through a pre-filter to capture large particles. The air then flows
through a HEPA (High-Efficiency Particulate Air) filter to remove fine particles and bacteria, ultimately delivering
clean air in a vertical or horizontal laminar flow to create a
sterile environment (typically ISO Class 5 or better). Some models
also include UV sterilization lamps for enhanced disinfection.
Key Components
- Enclosure: Seamless, smooth design to minimize dust accumulation and
contamination.
- Filtration System: Includes a pre-filter (primary) and a HEPA/ULPA filter to ensure
air cleanliness.
- Auxiliary Features: Equipped with lighting, adjustable work surfaces, and exhaust
options for diverse operational needs.
Types and Applications
- By Airflow Type
- Vertical Laminar Flow: Air flows downward, ideal for high-cleanliness operations (e.g.,
biological experiments).
- Horizontal Laminar Flow: Air blows horizontally toward the operator, suitable for general
cleanroom tasks.
- By Purpose: Includes general-purpose, chemical-resistant, and sterilizing
models, selected based on specific requirements.
Usage Guidelines
- Avoid Obstructions: Keep the workspace clear to maintain proper airflow and
cleanliness.
- Regular Maintenance: Replace filters and clean surfaces periodically to ensure
performance.
- Safety Precautions: Avoid direct exposure to UV light during sterilization to
prevent eye/skin damage.
