Tianfeng TF-FZG-20 Industrial-Scale Freeze Dryer

Overview

The Tianfeng TF-FZG-20 is an industrial-scale, shelf-type freeze dryer engineered for high-reliability lyophilization of heat-sensitive food matrices, dietary supplements, herbal extracts, and botanical raw materials. It operates on the fundamental principle of sublimation—removing water from frozen product under deep vacuum while maintaining temperature control below the eutectic point—thereby preserving structural integrity, bioactive compounds, enzymatic activity, and sensory attributes. Designed for continuous batch processing in GMP-aligned production environments, the system integrates a front-chamber/rear-condenser architecture with a 20 m² effective drying area, enabling throughput scalability without compromising process consistency. Its ≤ −65 °C cold trap and ≤ 2.7 Pa ultimate vacuum ensure rapid vapor removal and minimal residual moisture (< 2% w/w typical), meeting long-term stability requirements for ambient-storage food products and nutraceuticals.

Key Features

• GMP-compliant chamber construction using mirror-finished 304 stainless steel with zero dead-leg design, fully cleanable and validated for repeated sanitization cycles.
• Modular shelf system (10+1 shelves, 70 mm spacing) with dual-material options: high-conductivity extruded aluminum (anodized, electropolished) or seamless 304 stainless steel plates—both engineered for uniform thermal transfer and compliance with FDA 21 CFR Part 11 data integrity standards when paired with the IPC control interface.
• Full-liquid circulating refrigeration circuit delivering rapid cooldown (≤ 2.5 h from ambient to −50 °C) and stable shelf temperature control (±0.5 °C over full range: −45 °C to +80 °C).
• Integrated dual-mode defrost system—steam or immersion—enabling residue-free ice removal within ≤ 45 minutes, minimizing downtime between batches.
• Omnidirectional vacuum architecture featuring ULVAC (Edwards/Airco) high-efficiency vacuum pump assemblies, configurable per user vacuum profile requirements (e.g., coarse pumping + fine vacuum hold for crystalline vs. amorphous formulations).
• Redundant safety interlocks including pressure differential monitoring, condenser overload protection, and real-time shelf temperature deviation alarms—all logged with time-stamped audit trails.

Sample Compatibility & Compliance

The TF-FZG-20 accommodates diverse sample formats: bulk trays (up to 100 L per shelf), stacked blister packs, pre-filled vials (1–50 mL), and irregularly shaped botanicals (e.g., whole goji berries, sliced ginger, or powdered herb blends). Its chamber geometry supports both static loading and optional automated tray handling integration. All wetted surfaces comply with ASME BPVC Section VIII Div. 1 pressure vessel code and meet EN 15512:2017 requirements for food-grade freeze dryers. The system is compatible with ISO 22000, HACCP, and BRCGS Food Safety Standard Annex 5 (Equipment Design) protocols. Documentation packages include FAT/SAT reports, IQ/OQ templates, and material traceability dossiers for stainless steel components (3.1 mill certificates provided).

Software & Data Management

Control is executed via an Omron NX-series PLC interfaced with a ruggedized industrial PC running proprietary Tianfeng LyoControl™ v4.2 software. The platform supports ≥ 200 programmable drying recipes, each with multi-step ramp/hold profiles, real-time PID tuning, and dynamic vacuum modulation. All operational parameters—including shelf temp, chamber pressure, condenser temp, and sublimation rate—are sampled at 1 Hz and stored locally with SHA-256 hashing for tamper-evident archiving. Remote access (via TLS 1.2 encrypted Wi-Fi or Ethernet) enables off-site monitoring, alarm push notifications, and secure recipe upload/download. Audit trail functionality complies with FDA 21 CFR Part 11 (electronic signatures, role-based access, and immutable log retention ≥ 15 years).

Applications

• Stabilization of probiotic cultures, enzyme powders, and vitamin complexes without denaturation.
• Production of instant coffee, fruit puree powders, and functional food ingredients retaining anthocyanins, polyphenols, and volatile aromatics.
• Lyophilization of traditional Chinese medicinal herbs (e.g., astragalus, reishi, and cordyceps) to preserve marker compounds (astragalosides, ganoderic acids) and reduce microbial load via anaerobic inactivation.
• Preparation of ready-to-reconstitute meal components for military, aerospace, and emergency relief logistics where shelf life > 24 months at 25 °C is mandated.
• Process development scaling from lab (0.1 m²) to pilot (5 m²) to production (20 m²) using identical thermal/vacuum control logic—ensuring direct tech transfer fidelity.

FAQ

Is the TF-FZG-20 compliant with FDA or EU Annex 11 requirements?
Yes—the control architecture, electronic record retention, user access management, and audit trail generation are designed to support validation against FDA 21 CFR Part 11 and EU Annex 11 for computerized systems in regulated food and supplement manufacturing.
Can shelf temperature be independently controlled per layer?
No—shelves operate in parallel mode with uniform setpoint distribution; however, thermal uniformity across all 10+1 shelves is validated to ±0.8 °C at steady state per ASTM F2698-22.
What utilities are required for installation?
Three-phase 380 V ±10%, 50 Hz power supply; chilled water loop (7–12 °C, 5 bar max); compressed air (6–7 bar, oil-free, ISO 8573-1 Class 2); and dedicated vacuum exhaust ducting.
Does Tianfeng provide IQ/OQ documentation support?
Yes—standard package includes editable IQ/OQ protocol templates, calibration certificates for all critical sensors (PT100, capacitance manometer, thermocouples), and on-site commissioning assistance by certified field engineers.
Is remote troubleshooting supported under warranty?
Yes—Tianfeng’s 24/7 technical support team provides secure remote diagnostics via TeamViewer Enterprise (ISO/IEC 27001 certified connection), with resolution SLA of < 4 business hours for critical alarms.