IQF Spiral Freezer for Seafood Processing — Engineered by Havmek

Engineered for Uniform Core Temperature. Designed for Continuous Throughput.

Protect what you catch and preserve what you deliver. Havmek IQF freezing systems are engineered for uniform core temperature, stable product handling across salmon, shrimp, whitefish, and squid lines, and long-term performance — while keeping energy use and operational variability under control. ISO 9001, ISO 14001, and ISO 45001 certified.

Built for the Process
At Havmek, IQF freezing systems are engineered to match product mix, throughput targets, and seafood plant layout — for salmon and whitefish fillets, shrimp lines, squid rings, and breaded products. This tailored approach eliminates the costly line adjustments commonly required with standard imported IQF equipment.In-house aerofoil impeller design optimises heat-transfer efficiency, delivers faster freezing with uniform core temperature, and reduces specific energy consumption by up to 20% compared to conventional spiral freezer configurations.
IQF Spiral Freezer
What is an IQF Spiral Freezer?
IQF — Individually Quick Frozen — is a continuous freezing method where each seafood piece is frozen separately at -18°C or lower, preventing clumping and preserving natural texture, colour, and freshness. In a spiral freezer, a controlled airflow pattern ensures every product piece receives identical cooling and dwell time, resulting in consistent core temperature across the entire batch — critical for export-grade shrimp, fish fillets, squid rings, and breaded seafood products.
Technical Features
Refrigerant Flexibility

Supports Sub-critical CO2 (R744), Transcritical CO2, and Low-Charge Ammonia (R717) refrigerant configurations for EU market compliance and energy efficiency. The CO2-NH3 Cascade system — co-developed with NTNU (Norwegian University of Science and Technology) — maintains CO2 at safe condensing temperatures while enabling deep-freezing capability with a reduced ammonia charge. Compliant with F-Gas Regulation (EU) 517/2014.

Optimized Airflow

Draw through and blow through airflow options, with double impingement or horizontal airflow configurations. Indigenous aerofoil impeller design ensures uniform air velocity and rapid, even core cooling.

Direct Drum Drive

Low tension direct belt to drum engagement eliminates slippage, even under heavy loading. SS316L drum and reinforced frame ensure long-term stability and low mechanical wear.

Belt stability

Designed to handle heavier product weights without belt drift. Precision belt tracking maintains alignment and consistent product spacing.

Dynamic Product Guiding

Maintains product containment on the belt and prevents edge spillage during freezing.

Full CIP and Hygiene design

Fully CIP (Clean In Place) enabled with multiple stage wash zones for alkaline, rinse, and sanitise cycles. The integrated Hot Gas Defrost function minimises downtime during cleaning and product changeovers. Constructed entirely in SS304/316L with food grade welds and an open frame structure for total washdown access.

Integrated Smart Control

Equipped with PLC and HMI based automation for real time control of temperature, dwell time, and belt speed. The integrated IoT data logging platform allows remote diagnostics and performance tracking, ensuring consistent operational control.

Thermal and Energy Optimisations

IE4 premium-efficiency motors paired with variable-frequency drives (VFDs) achieve up to 20% lower specific energy consumption versus conventional spiral freezer designs — reducing operational costs for high-volume salmon, shrimp, and whitefish processing. Insulated enclosure panels with a thermal conductivity of lambda 0.022 W/m·K prevent energy loss and condensation, maintaining stable freezer temperature during 24/7 continuous operations.

Food Grade Compliance

IP67-rated stainless steel electrical cabinet for safe operation in cold, humid seafood processing environments. System design compliant with ISO 9001, ISO 14001, HACCP, and EU food safety hygiene standards — making Havmek IQF spiral freezers suitable for export-certified processing facilities in Norway, the UK, France, Spain, and Portugal.

Advantages
Maintains individual product integrity and true IQF quality
Enables continuous operation for high productivity
Compact vertical layout that saves floor space and simplifies cleaning
Fast cleaning and restart cycles with minimal downtime
Provides consistent temperature control and precise product separation
Delivers long term reliability and lower overall ownership cost
Ideal For:
Havmek IQF Spiral Freezers are designed for whole shrimp, peeled shrimp, salmon fillets, cod fillets, mackerel, squid rings, breaded seafood products, and surimi-based items. Suitable for processing capacities from 100 kg/hr to 5,000 kg/hr, and compatible with EU export-certified seafood processing facilities in Norway, UK, France, Spain, and Portugal.
Shrimp
Squid Rings
Diced Fish
Breaded Fillets
Operational Support and Maintenance
Havmek IQF Spiral Freezers are designed for long service life in demanding, high-throughput seafood processing environments. A global service network — with onsite support available within 48 hours across Europe — ensures uninterrupted production through scheduled preventive maintenance, remote IoT monitoring, and predictive diagnostics. The open-frame structure provides easy access for inspection, CIP cleaning, and part replacement, keeping the system performing year-round with minimal planned downtime.
FAQs
1. What refrigerants does the Havmek IQF spiral freezer support?

Havmek IQF Spiral Freezers support Sub-critical CO2 (R744), Transcritical CO2, Low-Charge Ammonia (R717), Brine, and Ice Water refrigerant configurations. The CO2-NH3 Cascade system delivers deep-freeze capability at reduced ammonia charge, compliant with EU F-Gas regulations.

2. What makes the Havmek CO₂–NH₃ cascade freezing system unique?

The CO2-NH3 Cascade system is a two-refrigerant architecture co-developed with NTNU (Norwegian University of Science and Technology). CO2 is used as the primary cooling medium, with ammonia in the high-stage circuit — enabling deep freezing at -35°C or lower while minimising ammonia charge to below 50kg, meeting EU machinery directive safety requirements.

3. How does Havmek ensure food safety compliance in its IQF freezers?

Havmek IQF Spiral Freezers use multi-stage CIP (Clean In Place) systems with alkaline, rinse, and sanitise cycles. Hot Gas Defrost minimises downtime between sanitation cycles. The SS304/SS316L open-frame structure and food-grade welds ensure full washdown access and compliance with HACCP and EU food hygiene regulations.

4. What seafood species is the Havmek IQF spiral freezer suitable for?

Havmek IQF spiral freezers are engineered to handle a wide range of seafood species, including salmon fillets, tuna loins, whole prawns, scallops, and white fish such as cod and haddock. Belt speed, dwell time, and airflow configuration are adjustable to match different product dimensions, weights, and target core temperatures.

5. What is the typical lead time for a Havmek IQF spiral freezer?

Lead times vary depending on the level of customisation, plant-specific requirements, and overall project complexity. Once specifications are confirmed, Havmek’s engineering team initiates design and fabrication, followed by full system testing and commissioning. Contact our team for a project-specific delivery schedule.

6. What after-sales support does Havmek provide for its freezing systems?

Havmek provides 24/7 remote support, on-site technical service within 48 hours in most regions, structured preventive maintenance programmes, and guaranteed spare parts availability. Long-term service agreements ensure consistent uptime and reliable performance throughout the operational life of the system.

7. Can Havmek machines be upgraded or expanded in the future for compatibility and capacity increase?

Yes. During the early requirement discussions, Havmek factors in possible future needs such as capacity growth, product changes, or line expansion. This allows the system to support long-term scalability and remain compatible with future upgrades.

8. What does Havmek do?

Havmek delivers custom built, cost efficient and certified solutions for seafood processing, engineered with strict hygiene standards and a strong focus on consistent product quality. From processing to final packaging, we help you optimize operations, reduce waste, and maximize profitability.

9. What other offerings Havmek Provides?

Havmek provides glazing systems, conveying solutions, freezing equipment, grading units, and integrated end-of-line handling. All systems are designed to match process flow, layout conditions, and capacity requirements. Discover our other offerings

10. How is Havmek different from standard machinery OEMs?

Standard OEMs sell fixed models. Havmek creates machines that are engineered to fit the customer’s layout, capacity, product type, and workflow. We solve challenges related to space limitations, nonstandard product dimensions, slow ROI, and integration complexity which traditional OEM machines cannot address.

11. What stages of a project does Havmek handle?

Havmek manages the complete cycle including discovery, design, simulation, fabrication, testing, integration, commissioning, and long term support. All machines are designed using engineering tools and manufactured in ISO certified facilities.

12. What type of support does Havmek offer after installation?

Havmek provides 24X7 remote assistance, onsite support within 48 hours in most regions, preventive maintenance, spare parts availability, and long term service programs. This ensures consistent uptime and reliable long term performance.

13. What is the throughput capacity of Havmek IQF Spiral Freezers?

Havmek IQF Spiral Freezers are available from 100 kg/hr to 5,000 kg/hr depending on product type, dwell time requirements, and plant layout. Contact our engineering team to specify the correct configuration for your processing line.

14. Are Havmek IQF freezers suitable for European seafood processing plants?

Yes. Havmek IQF Spiral Freezers are ISO 9001, ISO 14001, and ISO 45001 certified and designed to meet EU food safety and machinery directive requirements. They are deployed in salmon and whitefish processing facilities across Norway, the UK, France, Spain, and Portugal.

15. How does an IQF spiral freezer differ from a blast freezer for seafood?

An IQF spiral freezer freezes each seafood piece individually on a continuous belt, preventing clumping and preserving texture. A blast freezer processes products in static batches, which can result in product clustering and uneven freezing. IQF is preferred for export-grade shrimp, fillets, and squid rings where individual presentation and uniform core temperature are required.

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