HJ FLB-1A Single-Person Dual-Blow Air Shower

Overview

The HJ FLB-1A Single-Person Dual-Blow Air Shower is an engineered entryway purification system designed for controlled environments requiring ISO Class 5–8 (Class 100–100,000) cleanroom compliance. It operates on the principle of high-velocity laminar airflow—generated by a centrifugal blower and conditioned through a prefilter and a final HEPA filter—to remove particulate contaminants from personnel clothing and surfaces before entry into classified zones. Unlike single-blow configurations, the FLB-1A integrates two opposing nozzle arrays (left/right), delivering simultaneous air jets across the full torso and upper limb profile, thereby increasing particle removal efficiency per cycle without extending dwell time. Its compact footprint and vertical airflow architecture minimize spatial intrusion while maintaining structural integrity under continuous operation in pharmaceutical manufacturing, microelectronics assembly, and biomedical R&D facilities.

Key Features

• Dual-side blow configuration with 12 precisely aligned Φ30 mm nozzles—6 per side—optimized for uniform coverage and minimal shadowing on human form.
• Adjustable air shower duration (0–60 seconds) via digital timer with non-volatile memory retention, supporting SOP-defined exposure protocols.
• Interlocked door logic: external door opening automatically triggers blower activation and internal lighting; internal door remains mechanically inhibited until cycle completion to prevent cross-contamination.
• HEPA filtration certified to ≥99.7% efficiency at 0.5 µm particle size (per sodium flame test methodology, aligned with EN 1822-1 and IEST-RP-CC001.4).
• Robust stainless steel (SUS304) interior chamber and powder-coated galvanized steel exterior—resistant to corrosion, static accumulation, and routine disinfectant exposure.
• Low-noise operation (<68 dB[A] at 1 m) achieved via vibration-dampened motor mount and acoustic lining within the air plenum.

Sample Compatibility & Compliance

The FLB-1A is validated for use with personnel wearing standard cleanroom garments (e.g., bouffant caps, coveralls, shoe covers, and gloves). It does not accommodate carts, pallets, or oversized equipment—applications requiring material pass-through necessitate dedicated air shower tunnels or airlocks. The unit complies with foundational cleanroom infrastructure standards including ISO 14644-1 (airborne particle classification), ISO 14644-3 (test methods), and GB/T 25915.1–2021 (Chinese national equivalent). While not intrinsically certified to FDA 21 CFR Part 11, its operational logs (when integrated with optional RS485/Modbus-enabled controllers) support ALCOA+ data integrity principles required under GMP Annex 1 and EU GMP Chapter 5 audits.

Software & Data Management

The base FLB-1A operates via embedded microcontroller with push-button interface and LED status indicators—no software installation or network dependency required. Optional upgrades include a programmable logic controller (PLC) module offering event logging (door open/close, cycle start/end, filter runtime hours), RS485 Modbus RTU output for SCADA integration, and password-protected parameter editing. Audit trails generated via this module meet GLP traceability requirements when paired with timestamped external storage. Firmware updates are performed offline using USB-to-serial adapters; no cloud connectivity or remote access capabilities are included—ensuring IT security alignment with IEC 62443-3-3 Level 1.

Applications

• Pharmaceutical aseptic processing suites: pre-entry decontamination for operators entering Grade A/B zones per EU GMP Annex 1 §4.32.
• Semiconductor fabrication cleanrooms: reduction of skin-shed particles prior to photolithography or wafer handling stations.
• Cell therapy and biomanufacturing labs: mitigation of environmental bioburden during operator transition between grey and white areas.
• Medical device packaging lines: compliance with ISO 13485:2016 clause 7.5.11 (control of contamination during production).
• Academic cleanroom teaching facilities: modular training tool for cleanroom behavior, gowning validation, and airflow visualization studies.

FAQ

Is the FLB-1A suitable for ISO Class 4 (Class 10) environments?
No—the unit’s design and filtration performance target ISO Class 5–8 applications. For higher-class environments, laminar flow hoods or air showers with ULPA filters and real-time particle monitoring are recommended.
Can the air velocity be calibrated or adjusted beyond the factory-set 15–20 m/s range?
No—exit velocity is fixed by blower impeller geometry and filter resistance. Field adjustment would compromise filter integrity and violate EN 1822 airflow uniformity specifications.
Does the unit include filter replacement alerts or differential pressure monitoring?
Not in the base configuration. Optional DP sensors and alarm relays can be added as a factory-installed accessory (part number: FLB-DP-01).
What maintenance intervals are recommended for prefilter and HEPA filter replacement?
Prefilter: every 3–6 months depending on ambient dust load; HEPA filter: every 18–24 months or after 7,500 operational hours—validated via upstream/downstream particle challenge testing per ISO 14644-3.
Is electrical certification provided for North American markets (e.g., UL, CSA)?
Standard units carry CE marking per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. UL/cUL listing requires custom engineering and third-party testing—available upon request with extended lead time.