Laboratory-Scale Ice Cream Freezer C706

Overview

The C706 Laboratory-Scale Ice Cream Freezer is a compact, self-contained continuous freezing system engineered for research laboratories, pilot-scale product development facilities, and quality control environments in dairy science, food engineering, and frozen dessert innovation. Unlike commercial soft-serve units designed for high-throughput service, the C706 integrates precision thermal management and controlled dynamic freezing—based on scraped-surface heat exchange principles—to enable reproducible formulation trials under defined process parameters. Its integrated refrigeration circuit eliminates dependency on external chillers or glycol loops, allowing immediate operation upon connection to a three-phase 380 V power supply. The unit maintains consistent nucleation kinetics and air incorporation (overrun) control across variable base formulations—including low-fat, non-dairy, high-viscosity, or high-solids mixes—making it suitable for studying freezing point depression, ice crystal morphology evolution, and structural stability during hardening.

Key Features

• Self-contained refrigeration system with a dedicated 9,500 BTU/hr hermetic compressor, optimized for rapid temperature ramping and stable −5 °C to −12 °C cylinder wall setpoints.
• Single 3.2 L stainless steel scraped-surface freezing cylinder with adjustable dasher speed (0–120 rpm), enabling precise control over shear rate and ice nucleation density.
• 18.9 L insulated ingredient hopper with level sensor feedback and gravity-fed delivery to ensure uniform mix flow and minimize air entrainment variability.
• Robust 1.5 HP agitator motor with thermal overload protection and sealed bearing assembly for continuous operation under high-viscosity load conditions.
• Integrated electrical safety architecture compliant with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission) standards; CE-marked power distribution module.
• Front-access service panel with quick-release fasteners for routine maintenance of scraper blades, gaskets, and temperature probes—designed for GLP-aligned calibration traceability.

Sample Compatibility & Compliance

The C706 accommodates a broad spectrum of dairy and non-dairy base formulations: whole milk, skimmed milk, plant-based emulsions (soy, oat, coconut), high-protein functional blends, and sugar-reduced systems containing polydextrose or allulose. It supports ASTM F2683-21 (Standard Practice for Sensory Evaluation of Frozen Desserts) sample preparation protocols and enables controlled overrun adjustment (typically 25–60%) via regulated air injection at the inlet manifold. All wetted surfaces contact food-grade 304 stainless steel (ASTM A240), and elastomeric seals meet FDA 21 CFR §177.2600 requirements. The unit’s operational logs—including cylinder temperature, motor current draw, and run duration—are timestamped and exportable, supporting audit readiness for ISO/IEC 17025-accredited labs.

Software & Data Management

While the C706 operates via an intuitive tactile control panel with LED status indicators, optional RS-485 Modbus RTU interface enables integration into centralized lab data acquisition networks. Process variables—including real-time cylinder surface temperature, agitator RPM, and cumulative runtime—can be logged at 1 Hz resolution using third-party SCADA or LabVIEW-compatible software. All configuration settings are stored in non-volatile memory with write-protection logic to prevent accidental parameter drift. For regulated environments, optional firmware upgrade supports 21 CFR Part 11-compliant electronic signatures and audit trail generation when paired with validated host software.

Applications

• R&D of novel frozen dessert textures through systematic variation of freezing rate, residence time, and shear history.
• Stability assessment of emulsifiers and stabilizers (e.g., guar gum, locust bean gum, cellulose derivatives) under dynamic freezing conditions.
• Correlation studies between rheological behavior (measured pre-freeze via rotational viscometry) and post-extrusion melt resistance.
• Educational demonstration of phase transition thermodynamics, including latent heat removal, ice recrystallization inhibition, and glass transition mapping.
• QC batch validation for prototype formulations prior to scale-up on industrial continuous freezers (e.g., Tetra Pak, APV, or SPX Flow systems).

FAQ

Is the C706 suitable for producing samples compliant with AOAC Official Methods for frozen dessert analysis?
Yes—the unit’s consistent freezing dynamics and calibrated temperature control support AOAC 992.17 (Determination of Fat in Ice Cream) and AOAC 985.29 (Moisture Content) sample preparation requirements.
Can the freezing cylinder be sterilized in place (SIP) using steam or chemical agents?
No—SIP is not supported. Cleaning follows CIP protocols using alkaline-peroxide solutions at ≤70 °C; disassembly of dasher assembly is required for thorough inspection per ISO 13485 hygiene guidelines.
What is the minimum recommended batch volume for statistically reliable texture analysis?
A minimum of 2.5 L (78% of cylinder capacity) is advised to ensure representative shear history and avoid wall-effect bias in microstructural evaluation.
Does the unit include validation documentation for IQ/OQ protocols?
Factory-supplied IQ/OQ checklists and as-built schematics are provided; full protocol execution requires site-specific calibration against NIST-traceable temperature and flow standards.