1. System Overview: Double Spiral Continuous Freezing Architecture
The SD-500 adopts a dual-drum spiral conveyor system, enabling compact footprint utilization while significantly increasing effective freezing length.
Core structural characteristics:
Dual spiral drum configuration (left-right synchronized operation)
Continuous in-feed and out-feed design for uninterrupted production
Compact footprint with extended freezing residence time
Optimized airflow distribution for uniform product freezing
This structure allows higher throughput compared to conventional single-spiral systems under the same installation space.
2. Core Engineering Design
2.1 High-efficiency refrigeration system
Industrial-grade refrigeration unit optimized for continuous load variation
Evaporators constructed with high-performance aluminum alloy for enhanced heat transfer
Stable operation under tropical ambient conditions
2.2 Airflow & freezing uniformity system
Multi-directional forced air circulation design
Optimized air duct geometry to reduce cold loss
Uniform freezing across all spiral layers and belt levels
2.3 Food-grade conveying system
Stainless steel conveyor mesh belt (corrosion-resistant and hygienic)
Designed for seafood contact applications
Easy cleaning structure compliant with food safety requirements
2.4 Intelligent control system
PLC-based temperature and process control
Real-time monitoring of freezing curve stability
Optional IoT remote monitoring system for operational diagnostics
3. Key Performance Advantages
3.1 High freezing efficiency
The dual-spiral configuration increases effective freezing path length within a compact footprint, improving throughput without expanding facility space requirements.
3.2 Energy optimization design
Variable frequency compressor control system
Load-adaptive energy regulation
Optimized heat exchange system reduces unnecessary energy loss
Approximate energy savings: ~15% vs. conventional spiral freezers
3.3 Stable operation in tropical climates
Designed specifically for high ambient temperature and humidity environments:
Enhanced anti-corrosion protection for key components
Improved heat dissipation design for condenser system
Stable performance under continuous industrial operation
3.4 Simplified operation & usability
Intuitive human-machine interface (HMI)
Graphical control display for easy operation
Multi-language support for international operators
Reduced training requirements for frontline staff
4. Application Scope
Seafood processing industry
Shrimp, fish fillets, squid, shellfish IQF freezing
Export-grade product stabilization
Pre-freezing before packaging and cold chain logistics
Meat and poultry processing
Chicken parts, beef, pork portion freezing
High-volume standardized production lines
Fruit and vegetable processing
IQF freezing of berries, cut vegetables, and export produce
Moisture retention and texture preservation during storage and transport
5. Engineering Challenges & CBFI Solutions
Challenge 1: High-temperature operating environment
Solution: reinforced refrigeration system design + corrosion-resistant materials + optimized heat dissipation architecture
Challenge 2: Energy consumption pressure
Solution: variable frequency control system + airflow optimization + high-efficiency heat exchange system
Challenge 3: Operational simplicity requirements
Solution: simplified HMI interface + automated control logic + remote monitoring support
6. System Integration & Smart Operation
The SD-500 can be integrated into full production lines including:
Pre-cooling systems
Processing and cutting lines
Automated packaging systems
Cold storage and logistics systems
Optional IoT platform enables:
Real-time equipment status monitoring
Predictive maintenance alerts
Production efficiency analysis
Conclusion
The CBFI SD-500 double spiral IQF freezer is engineered as a compact, high-efficiency industrial freezing solution for modern seafood and food processing plants.
By combining dual-spiral mechanical architecture, energy-efficient refrigeration design, and intelligent control systems, it provides a stable and scalable freezing platform for export-oriented food production environments.
