HJ FLB-1B Automatic Interlocked Single-Person Single-Blow Air Shower

Overview

The HJ FLB-1B Automatic Interlocked Single-Person Single-Blow Air Shower is an engineered entry-level personnel air shower system designed for controlled environments requiring ISO Class 5–8 (Class 100–100,000) cleanroom compliance. It operates on the principle of high-velocity, HEPA-filtered laminar airflow directed tangentially across the human body surface to dislodge and remove particulate contaminants—including skin flakes, textile fibers, and ambient dust—prior to entry into classified clean zones. The unit integrates mechanical interlocking between opposing doors to prevent simultaneous opening, thereby maintaining pressure differentials and preventing cross-contamination between non-classified and classified areas. Its compact footprint and vertical airflow architecture make it suitable for retrofit installations in existing facility corridors or as a dedicated pass-through node in pharmaceutical manufacturing suites, microelectronics assembly lines, and biomedical research laboratories.

Key Features

• Fail-safe dual-door mechanical interlock system ensures only one door can be opened at any time, eliminating uncontrolled air exchange between adjacent zones.
• Adjustable air shower cycle duration (0–99 seconds) with digital timer control, enabling process-specific dwell times aligned with internal SOPs or regulatory validation requirements.
• Six strategically positioned stainless-steel nozzles (Φ30 mm) deliver uniform, high-velocity airflow (15–20 m/s) from head to toe, optimized for particle removal efficiency without compromising operator comfort.
• Integrated HEPA filter (≥99.7% efficiency at 0.5 µm per sodium flame test) mounted upstream of the blower assembly ensures consistent delivery of ISO Class 5-compliant air during operation.
• Compact external dimensions (1050 × 760 × 2050 mm) allow installation in constrained access points while maintaining full-height ergonomics for operators up to 195 cm tall.
• Single-phase 220 V / 50 Hz power input with peak draw limited to 500 W supports deployment in standard industrial electrical infrastructure without dedicated circuit upgrades.

Sample Compatibility & Compliance

The FLB-1B is intended exclusively for personnel decontamination—not for material or equipment processing. It complies with fundamental cleanroom engineering principles outlined in ISO 14644-1 (airborne particle concentration), ISO 14644-3 (test methods), and EU GMP Annex 1 (2022 revision) Section 4.32 regarding airlock design and contamination control. While not certified to UL 61010-1 or IEC 60335-1 as a standalone appliance, its construction meets CE-marking prerequisites for low-voltage equipment when installed per manufacturer-specified grounding and ventilation clearances. The unit supports GLP/GMP-aligned operational documentation through manual logbook integration; however, it does not include electronic audit trail capability or FDA 21 CFR Part 11-compliant data recording.

Software & Data Management

The FLB-1B operates via embedded electromechanical controls with no onboard microprocessor, firmware, or network interface. All settings—including timer value and door status feedback—are managed through tactile push-button inputs and LED indicators. No software installation, calibration certificate upload, or remote diagnostics are supported. Users must maintain manual records of daily functional checks (door interlock verification, airflow confirmation via anemometer, and filter replacement dates) in accordance with internal quality management systems. For facilities requiring automated data capture, third-party PLC integration via dry-contact relay outputs (optional accessory) may be implemented at the system integration level.

Applications

• Pharmaceutical aseptic manufacturing: Pre-entry decontamination for operators entering Grade A/B cleanrooms during sterile product filling operations.
• Medical device assembly: Personnel air shower node prior to Class 10,000 (ISO 7) cleanrooms used for implantable device packaging.
• Biotechnology R&D labs: Entry point to biosafety level 2 (BSL-2) containment areas where particulate ingress must be minimized alongside biocontainment protocols.
• Microelectronics fabrication: Transition zone before photolithography or thin-film deposition bays sensitive to sub-micron airborne particles.
• Food-grade processing facilities: Controlled access to hygienic processing zones compliant with ISO 22000 and SQF Code Edition 9 requirements.

FAQ

Does the FLB-1B support variable airflow speed control?

No. Air velocity is fixed within the 15–20 m/s range at nozzle exit, determined by fan impeller design and static pressure characteristics. Speed modulation is not implemented.
Is HEPA filter replacement documented in the unit?

No. Filter change intervals must be tracked manually using facility-maintained maintenance logs. The unit lacks RFID tag readers or filter life counters.
Can this unit be integrated into a Building Management System (BMS)?

Only via optional hardwired dry-contact signals (e.g., “door open”, “cycle active”)—no Modbus, BACnet, or Ethernet connectivity is available natively.
What is the recommended maintenance frequency for the pre-filter?

Inspect weekly and replace every 3–6 months depending on ambient dust loading; HEPA filter replacement is typically required every 12–24 months under continuous operation.
Is the FLB-1B suitable for use with powered air-purifying respirators (PAPRs)?

Yes—its interior height and unobstructed standing area accommodate personnel wearing PAPRs, though users must verify compatibility with their specific helmet model’s clearance envelope.