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FSL1500
FST
FST-15001
The industrial spiral freezer machine represents a highly efficient, energy-conserving quick-freezing solution engineered specifically for high-capacity food processing facilities. Designed with a remarkably compact footprint, this system maximizes vertical space utilization, making it the preferred choice for modern food production plants where expansive floor space is a premium commodity. The equipment’s imposing yet streamlined architecture is constructed predominantly from food-grade 304 stainless steel. This encompasses the main structural frame, the intricate multi-tiered conveyor belts, and the internal housing, excluding only specific mechanical and electrical components such as motors, blower impellers, evaporator pipes, and fins. This heavy-duty metallic construction not only provides a smooth, easily washable surface but also ensures exceptional resistance against the corrosive, high-humidity environments typical of continuous food processing.
A definitive structural advantage of this specific model is the integration of a fully insulated, self-contained base plate. By incorporating this modular foundation directly into the machine's architecture, facility operators are completely relieved from the costly and time-consuming burden of constructing a specialized heat preservation foundation on-site. The structural and thermal benefits include:
Premium Thermal Insulation: The outer enclosure utilizes high-density duplex stainless steel polyurethane insulation boards, featuring a density of 40 kg/m³ and a substantial thickness of 150mm.
Energy Conservation: This robust thermal barrier effectively locks in sub-zero temperatures, preventing thermal leakage and drastically reducing the electrical power required to maintain the optimal freezing environment.
Rapid Deployment: The modular design allows for quicker installation and commissioning without complex civil engineering groundwork.
Inside the freezing chamber, the environment is driven by a sophisticated 360° omnidirectional airflow circulation system. As the aluminum alloy stainless steel duct fans operate with a distinctively low-noise hum, they propel sub-zero air evenly across every tier of the spiral belt. For poultry processors handling up to 1500kg/h of chicken portions, this precise thermal control is absolutely critical. The dynamic, high-velocity airflow rapidly penetrates the core of the meat, driving the temperature from a positive ambient state down to a deep freeze of -18℃ within a highly adjustable 15 to 75-minute window. This rapid thermal extraction minimizes cellular wall damage and reduces moisture loss to the absolute minimum, thereby maximizing the final product yield and profitability.
Furthermore, the system accommodates customized pre-treatment processes specifically tailored for poultry and meat. It seamlessly integrates with specialized dehydration and water-glazing steps prior to the deep freeze. These tailored processing capabilities effectively prevent surface frostbite and freezer burn, preserving the natural firm texture, vibrant color, and premium visual appeal of frozen chicken cuts, fillets, and whole birds. Beyond poultry, this highly versatile spiral freezing equipment is widely adopted for processing an extensive array of products, including fried foods, aquatic catches, various types of pasta, and complex prepared meals.
Item | FSL1500（chicken） | |
Product | Chicken 25*14*5cm 1.7kg/unit | |
Capacity | 1500kg/h | |
In/Out Temp. | +2~+4℃ to -18℃ | |
Cooler Temp. | -35℃ | |
In/Out Time | 15-75min | |
Refrigerant | R404A | |
Refrigeration capacity | 230kw | |
Freezer Container Thickness | 150mm | |
Product Height | ≤80mm | |
Belt Width | 550 mm | |
Belt length | 180m | |
Belt layer number | 16 layers | |
Drum diameter | 2200mm | |
Product Input /Output Conveyor | 1500/500 mm | |
Water Input Pressure | ≥3 kg/cm2 | |
Cooler Power | 29.4KW(440V60HZ) | |
Freezer Size（L*W*H） | 7000×5000×3500mm （don’t include inter/out conveyor length） | |
Cooler Body Material | Duplex stainless steel polyurethane insulation board density or 40 kg/m3, the thickness of 150 mm, 304 stainless steel outer plate thickness more than 0.8 mm | |
Main Electric Brand | Schneider(France) | |
Belt and Speed | Food-grade stainless steel belt; Frequency conversion stepless speed regulation | |
Slide Track Material | Ultrahigh molecular polyethylene material. | |
Internal Structure | All made of 304 Stainless Steel Material, Argon arc welding | |
Evaporator | Effective from large aluminum finned tube set, stainless steel panel stent | |
Fan and Motor | Aluminum alloy stainless steel duct fan low noise and waterproof electric power consumption | |
Maintaining impeccable sanitation is a non-negotiable requirement in industrial food processing. This spiral freezing equipment features a fully welded, crevice-free internal structure utilizing precision argon arc welding techniques. This meticulous craftsmanship eliminates hidden dead zones, sharp corners, or rough seams where microscopic organic matter and moisture might otherwise accumulate. Coupled with an advanced automated Clean-in-Place (CIP) system, the entire interior freezing zone can be thoroughly sanitized using high-pressure water (requiring an input pressure of ≥3 kg/cm²) and cleaning agents without the need for labor-intensive manual disassembly. This rigorous approach to facility hygiene actively prevents bacterial cross-contamination, ensuring the processing line remains fully compliant with the most stringent FDA, HACCP, and global food safety regulations.
To streamline daily operations and reduce the reliance on constant manual supervision, the mechanical framework is driven by a top-tier Schneider Electric PLC intelligent control unit. Facility operators can easily manage critical variables—such as the frequency conversion stepless speed regulation of the belt, precise temperature profiles, and airflow dynamics—through an intuitive, responsive interface. The smart system supports the automatic synchronization of operational parameters and features advanced remote cloud-based diagnostic capabilities. This connectivity allows off-site technical teams to monitor equipment health in real-time, predict preventative maintenance needs, and significantly lower long-term operational and labor costs.
The physical movement of the product is handled by a massive 180-meter-long, 550mm-wide food-grade stainless steel belt, spiraling upward across 16 distinct layers around a 2200mm diameter drum. The belt glides smoothly along slide tracks manufactured from ultrahigh molecular polyethylene material, which drastically reduces friction, wear, and mechanical noise during continuous operation. Engineered for heavy-duty, around-the-clock production cycles, the entire freezing line is manufactured in strict accordance with CE and ISO international certification standards. Whether operating in high-humidity aquatic processing centers or demanding meat preparation facilities, the robust mechanical design and premium electrical components deliver unwavering reliability, operational safety, and consistent production output on a global scale.
The FSL1500 spiral freezer is primarily configured for chicken processing but may also be evaluated for other poultry and prepared-food applications.
The reference capacity is based on chicken products weighing approximately 1.7 kg per piece. Product dimensions, arrangement and inlet temperature must be checked before confirming the final production capacity.
Chicken breast portions can be conveyed continuously through the spiral freezer after cutting, seasoning, cooking or other upstream processing. Product spacing should be controlled to reduce contact between pieces.
The system may be used for chicken legs, wings, thighs and other portioned poultry products. Freezing time should be adjusted according to product thickness, bone content and loading density.
Breaded chicken, marinated poultry and prepared chicken products may also be processed, provided that the belt type, loading method and airflow conditions are suitable for the product.
The freezer can be integrated after cooking, frying or cooling processes when the product inlet temperature meets the designed operating conditions. Products entering above the specified temperature range require a separate capacity and refrigeration-load calculation.
The nominal capacity is 1,500 kg/h for the stated reference chicken product. The reference specification is approximately 1.7 kg per piece with dimensions of about 250 × 140 × 50 mm. Actual output varies with product size, weight, inlet temperature, spacing and required outlet temperature.
Yes. The spiral freezer may be evaluated for chicken breast, legs, wings, portioned poultry, breaded chicken and prepared chicken products. The final capacity and freezing time must be confirmed for each product.
The listed freezing-time range is 15–75 minutes. The residence time is adjusted by changing the conveyor belt speed. Thick or heavy products generally require a longer freezing time than small or thin products.
The listed freezer operating temperature is -35°C. Final operating conditions should be confirmed according to the product and required output.
The standard configuration uses a food-grade stainless steel conveyor belt with a listed width of 550 mm and an approximate total length of 180 m.
Yes. The equipment uses variable-frequency stepless speed regulation, allowing the product residence time to be adjusted within the designed operating range.
The listed configuration is 440 V and 60 Hz. Alternative electrical supplies should be discussed before manufacturing to ensure compatibility with the customer’s factory.
The listed freezer-body dimensions are approximately 7,000 × 5,000 × 3,500 mm, excluding inlet and outlet conveyor lengths. Additional space is required for operation, maintenance and refrigeration connections.
The machine is supplied with an integrated freezer base plate, so a separate insulated foundation may not be required. However, the site floor, structural load, drainage and installation conditions must still be checked before installation.
