Stainless Steel-AlMg Stacking Spiral Freezer Evaporator

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Stainless Steel Aluminum-magnesium Stacking Spiral Freezer Blast Freezer Evaporator Units

Stainless Steel-AlMg Stacking Spiral Freezer Evaporator

As one of China’s select manufacturers of self-stacking evaporators, our DJS series represents the pinnacle of advanced engineering and premium craftsmanship. Trusted by top-tier global cold chain providers, these evaporators deliver transformative space utilization – achieving up to 50% higher freezing capacity within identical footprints compared to conventional spiral systems. The revolutionary vertical stacking design maximizes production density without compromising performance, setting new benchmarks for high-throughput IQF operations.

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DJS

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DJS

Overview

Stainless Steel-AlMg Stacking Spiral Freezer Evaporator

The DJS series evaporator unit stands as a game-changer in industrial freezing, engineered to redefine efficiency for high-volume IQF (Individual Quick Freezing) operations. As a leading fast freezer evaporators solution, it integrates innovative vertical stacking technology to deliver 50% higher freezing capacity within the same footprint as conventional systems—making it the ideal evaporator for spiral quick freezer and blast freezer applications. Crafted with premium Stainless Steel evaporator components and high-performance Aluminum evaporator fins, this unit is trusted by global cold chain providers for its uncompromised durability and space optimization. Designed specifically as an evaporator for IQF, it caters to industries where space constraints and product quality are non-negotiable, ensuring minimal weight loss and maximum freshness retention for high-value goods.

Welding seam

Aluminum magnesium alloy fins

Observation window

DIRECT EXPANSION

PUMP FEEDING

Technical Specifications

Details

Material & Structural Build

The DJS Stainless Steel evaporator features 304/316 stainless steel tubes and reinforced stainless steel frames, paired with 0.2~0.4mm Aluminum evaporator (aluminum-magnesium alloy) fins optimized for ADF system integrity. The casing, constructed from titanium or stainless steel 304/316, ensures resistance to corrosion and harsh industrial environments. Critical components include unibody side panels with integrated stiffening ribs and aerospace-grade fasteners, enhancing vibration resistance and thermal cycling durability.

Refrigeration & Performance

This fast freezer evaporators unit supports a cooling capacity range of 50~500 kW, compatible with multiple refrigerants including HFC, NH₃, and CO₂. Its in-line geometry and vertical air direction promote uniform airflow, while optimized refrigerant distribution circuits prevent frost bridging. Fin distances are customizable (24-12-6, 32-16-8 mm, or as per requirements), and the unit employs centrifugal fans for consistent air circulation. Defrosting options include electric, hot gas, glycol, brine, water, and ADF systems, adapting to diverse operational needs.

Compliance & Installation

The evaporator unit meets EHEDG/3-A hygiene standards with radius corners and smooth surfaces, and holds CE certification for global deployment. Integrated lifting and forklift pockets enable easy installation via overhead crane or forklift, supporting seamless integration with automated freezing lines.

APPLICATIONS	Refrigeration
REFRIGERANTS	HFC	NH₃	CO₂
CAPACITY RANGE	50 ~ 500 kW
FIN DISTANCE	24-12-6 , 32-16-8 mm, or as requirements
GEOMETRY	In-line
AIR DIRECTION	Vertical
MATERIAL	Titanium	Aluminum	AlMg	Stain steel 304	Stain steel 316	Copper
TUBES	√			√	√
FINS		√	√
FIN THICKNESS		0.2~0.4mm	0.2~0.4mm
CASING	√			√	√
DEFROSTING	Electric	Hot gas	Glycol	Brine	Water	ADF
COILS						√
FANS MOTORS	Centrifugal fans
DIMENSIONS	As requirements
NUMBERS	1 ~ 3

Features

Core Features

Vertical Stacking Efficiency: Revolutionary design maximizes production density without sacrificing performance, ideal for space-constrained facilities using blast freezer or spiral quick freezer setups.

Industrial-Grade Durability: 40% longer service life than welded-frame competitors, thanks to monolithic side baffles and aerospace-grade fastening systems that maintain component alignment.

Hygienic & Compliant: Meets global food safety standards, making it a reliable evaporator for IQF applications where cleanliness is critical.

Superior Thermal Performance: Precision-engineered airflow channels eliminate turbulent leakage, while optimized refrigerant circuits enhance heat transfer and reduce energy consumption.

Easy Deployment & Maintenance: Multi-access installation points and smooth surfaces simplify cleaning, inspection, and long-term upkeep.

Applications

Application Scenarios

High-Value Seafood Processing

As a specialized evaporator for spiral quick freezer and blast freezer, the DJS unit excels in freezing premium seafood such as salmon, shrimp, and scallops. Its rapid freezing capability minimizes ice crystal formation, preserving texture, flavor, and nutritional value—critical for high-margin seafood products exported globally.

Berry & Fruit Freezing

Delicate berries (strawberries, blueberries) and soft fruits benefit from the unit’s gentle yet efficient freezing process. The Aluminum evaporator fins and balanced airflow prevent product dehydration, ensuring berries retain their shape and freshness during IQF processing.

Prepared Food Production

For pre-cooked meals, ready-to-eat snacks, and portion-controlled dishes, the DJS evaporator unit delivers consistent freezing results. Its space-saving design is ideal for food processing plants with limited floor space, supporting 24/7 uninterrupted production.

FAQ

FAQ About Auto-Defrost Impingement Tunnel Evaporator

What refrigerants can the DJS evaporator unit use?

The unit is compatible with HFC, NH₃, and CO₂ refrigerants, adapting to diverse environmental and regulatory requirements across EU, ASEAN, and MERCOSUR markets.

How does the stacking design improve my production line?

The vertical stacking feature increases freezing capacity by 50% within the same footprint, allowing you to expand output without investing in additional floor space—perfect for blast freezer and spiral quick freezer setups.

Is the unit compliant with international food safety standards?

Yes, it meets EHEDG/3-A hygiene standards and holds CE certification, ensuring compliance with global food processing regulations for IQF applications.

What is the maintenance cycle for this Stainless Steel evaporator?

Thanks to its robust 304/316 stainless steel construction and corrosion-resistant fins, the unit requires minimal maintenance—typically semi-annual inspections and cleaning, with a service life 40% longer than industry averages.