Tianfeng TF-FZG-150 Production-Scale Freeze Dryer with Integrated Condenser

Overview

The Tianfeng TF-FZG-150 is a GMP-compliant, production-scale freeze dryer engineered for continuous, high-reproducibility lyophilization of heat-sensitive food matrices—including fruits, vegetables, meats, seafood, pet food, herbal extracts, and functional food powders. It operates on the fundamental principles of sublimation-based drying: frozen product is subjected to controlled vacuum (≤10 Pa) while shelf heating provides precise thermal energy input, enabling ice to transition directly from solid to vapor without passing through the liquid phase. This preserves structural integrity, enzymatic activity, volatile compounds, and nutritional profiles far more effectively than conventional thermal dehydration methods. The integrated condenser design—located behind the drying chamber in a front-chamber/rear-trap configuration—ensures minimal vapor path length, rapid water vapor capture, and reduced risk of re-deposition or cross-contamination. Constructed entirely from ASTM A240 304 stainless steel with mirror-finished internal surfaces, the chamber meets hygienic design standards required for food-grade manufacturing environments.

Key Features

• GMP-aligned chamber and shelf fabrication: seamless 304 stainless steel construction with Ra ≤0.4 µm surface finish, zero dead-leg geometry, and fully drainable sloped floors.
• Integrated condenser system with dual-configuration options—monolithic or modular coil assembly—fabricated from electropolished 304 stainless steel tubing for corrosion resistance and cleanability.
• High-precision shelf temperature control (−30 °C to +80 °C) with uniformity maintained within ±1 °C across full 15 m² active area; optional aluminum or 304 stainless steel shelf variants available per process requirements.
• Robust refrigeration architecture utilizing premium imported compressors and optimized cascade cooling circuits, achieving ≤−35 °C condenser operating temperature with stable performance under full-load conditions.
• Modular vacuum system compatible with multiple pump configurations—including ULVAC (formerly Unisys) high-efficiency oil-sealed rotary vane pumps—supporting scalable evacuation profiles and long-term reliability.
• Omnibus PLC-based automation platform (Omron CJ2M series) with dual-mode operation (manual/automatic), multi-step recipe storage, real-time parameter adjustment during cycle execution, and step-jump functionality for process troubleshooting.
• Hygienic defrost methodology: programmable spray-water + immersion defrost sequence ensuring complete ice removal, residue-free condenser surfaces, and compliance with sanitary maintenance protocols.

Sample Compatibility & Compliance

The TF-FZG-150 accommodates bulk-loaded trays, stainless steel trolleys, and custom-designed carriers for heterogeneous food matrices ranging from sliced fruit to viscous soup concentrates and powdered botanical extracts. Its validated design supports adherence to international food safety frameworks including ISO 22000, HACCP, and Codex Alimentarius guidelines. Structural materials comply with FDA 21 CFR 178.3570 (indirect food additives) and EC No. 1935/2004. Optional IQ/OQ documentation packages are available for qualification under GMP Annex 15 and ICH Q5C stability testing requirements. All wetted surfaces conform to EHEDG EL Class I criteria for clean-in-place (CIP) compatibility.

Software & Data Management

The embedded HMI interface logs all critical process parameters—including shelf temperature, chamber pressure, condenser temperature, and elapsed time—at user-defined intervals (1–60 seconds). Raw data exports in CSV format via USB or Ethernet; optional OPC UA integration enables connectivity with MES/SCADA platforms. Audit trail functionality complies with FDA 21 CFR Part 11 requirements, recording operator ID, timestamped parameter changes, recipe modifications, and alarm events. Electronic signatures, role-based access control, and encrypted database storage are configurable per client validation protocols.

Applications

This system is routinely deployed for industrial-scale stabilization of: fruit and vegetable powders (e.g., strawberry, spinach, ginger); protein-rich marine products (shrimp, cod, salmon fillets); ready-to-eat meal components (noodle bases, broth granules); nutraceutical actives (turmeric curcumin, ginseng saponins); and pet nutrition formulations requiring extended ambient shelf life without preservatives. Its thermal stability and vacuum repeatability make it suitable for both R&D scale-up studies and commercial batch processing under HACCP-monitored conditions.

FAQ

Is the TF-FZG-150 compliant with international food-grade hygiene standards?
Yes—the chamber, shelves, and condenser are fabricated from ASTM A240 304 stainless steel with mirror-polished interiors (Ra ≤0.4 µm), designed to meet EHEDG EL Class I and ISO 14644-1 Class 8 cleanroom-compatible cleaning protocols.
Can shelf material be customized for specific thermal conductivity needs?
Yes—aluminum alloy shelves (extruded, brushed finish) are standard for rapid heat transfer; 304 stainless steel shelves are available for enhanced chemical resistance and ease of sterilization.
What vacuum pump configurations are supported?
Standard configuration includes ULVAC DS-101D oil-sealed rotary vane pumps; alternative options include dry screw pumps (for oil-free operation) or hybrid roots-plus-backing pump assemblies upon request.
Does the system support remote monitoring and validation documentation?
Yes—Ethernet-enabled data logging, optional 21 CFR Part 11-compliant audit trails, and customizable IQ/OQ/ PQ documentation packages are available for regulatory submissions.
What is the typical lead time for delivery and commissioning?
Standard delivery is 5–7 working days after order confirmation; FAT (Factory Acceptance Testing) and on-site SAT (Site Acceptance Testing) can be scheduled separately per project timeline.