CO2-Ready Low-Temp Food-Grade IQF Evaporator

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CO2-Ready Low-Temperature Food-Grade Flash Freezing Fluidized Bed IQF Freezer Evaporator

CO2-Ready Low-Temp Food-Grade IQF Evaporator

Exclusively designed for integration with fluidized bed Individual Quick Freezing (IQF) systems, the LHC evaporator series delivers uncompromising thermal performance for granular, sliced, or diced food products. Equipped with industrial-grade centrifugal blowers generating ultra-high static pressure, these units propel vertical air currents at critical velocities to fully suspend and separate individual food particles—eliminating product clumping while achieving rapid, uniform crust freezing. This aerodynamically optimized airflow ensures maximum product integrity for delicate items like berries, shrimp, or vegetable cubes, where minimal surface damage is non-negotiable.

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LHC

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LHC

Overview

CO2-Ready Low-Temp Food-Grade IQF Evaporator

The LHC series is a high-performance evaporator unit engineered exclusively for fluidized bed Individual Quick Freezing (IQF) systems, standing out as a top-tier fast freezer evaporators solution for the food processing industry. Designed to handle granular, sliced, or diced food products, it delivers uncompromising thermal efficiency while preserving product integrity—critical for delicate items like berries, shrimp, and vegetable cubes. Compatible with eco-friendly refrigerants including CO₂, NH₃, and HFC, this evaporator for IQF integrates food-grade materials and precision aerodynamics, making it a trusted choice for global seafood processors and ready-meal manufacturers seeking consistent, clump-free freezing results.

Stainless steel U-bend

Aluminum U-bend

（Both stainless steel and aluminum pipes can be welded on one side and formed as a whole on the other side.）

Trusted by global seafood processors and ready-meal manufacturers, LHC evaporators deliver unmatched IQF freezing precision through scientifically calibrated aerodynamics. Experience particle-perfect freezing with Stelx’s fluid dynamics expertise—where engineering rigor meets frozen food innovation.

Technical Specifications

Details

The LHC series covers a cooling capacity range of 10–300 kW, adapting to diverse production scales from small-batch processing to large industrial lines. Constructed with food-safe materials, it offers flexible options: Stainless Steel evaporator tubes (304/316 grades) for corrosion resistance and durability, paired with Aluminum evaporator fins (0.2–0.4mm thickness) or reinforced Al-Mg alloy fins for enhanced heat transfer. Fins spacing is fully customizable (16-8 mm to 40-20-10 mm) to optimize airflow resistance across multi-zone freezing stages (pre-chilling to deep-freezing).

Equipped with industrial-grade centrifugal blowers, the unit generates ultra-high static pressure, propelling vertical air currents at velocities exceeding 10 m/s to achieve full fluidization. It supports both horizontal and vertical air directions, while defrosting options include electric, hot gas, glycol, brine, water, and ADF—ensuring uninterrupted 24/7 operation. The core adopts 300kg hydraulic tube expansion technology, creating permanent tube-fin bonds that boost heat exchange efficiency by 25% compared to conventional assemblies.

APPLICATIONS	Refrigeration
REFRIGERANTS	HFC	NH₃	CO₂
CAPACITY RANGE	10 ~ 300 kW
FIN DISTANCE	16-8 , 18-9 , 20-10 , 24-12-6 , 28-14-7 , 32-16-8 ,40-20-10 mm, or as requirements
GEOMETRY	In-line
AIR DIRECTION	Horizontal or 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	Axial fans
DIMENSIONS	500 , 600 , 700 , 800 , 900
NUMBERS	1 ~ 10

Accessories

Advantages

Core Features

High-Velocity Fluidization for IQF Excellence: As a dedicated evaporator for IQF, its centrifugal blowers suspend individual food particles via vertical airflow, eliminating clumping and enabling rapid, uniform crust freezing—ideal for preventing surface damage on delicate products.

Adaptive Thermal Architecture: Customizable fin spacing (horizontal/vertical) allows precise tuning of airflow resistance across freezing zones, balancing heat transfer efficiency and fluidization consistency even at extreme temperatures.

Superior Structural Durability: The Stainless Steel evaporator tubes and reinforced fins withstand air velocities over 10 m/s without deformation. Hydraulic tube expansion eliminates micro-gaps, ensuring long-term thermal performance and reducing maintenance needs.

Broad Refrigerant Compatibility: Works seamlessly with CO₂, NH₃, and HFC, aligning with global sustainability goals and diverse industrial refrigeration setups.

Applications

Application Scenarios

Seafood Processing: Perfect for freezing shrimp, scallops, and small fish fillets—its fluidization design prevents seafood from sticking together while preserving texture and freshness.

Berry & Vegetable IQF Lines: Ideal for freezing strawberries, blueberries, peas, and diced carrots. The gentle airflow protects soft berry skins and maintains the shape of fragile vegetable pieces.

Ready-Meal Manufacturing: Used to freeze pre-portioned ingredients (e.g., diced potatoes, minced meat) for ready-to-eat meals, ensuring quick freezing without compromising nutritional value.

Integration with Blast Freezers: When paired with blast freezer systems, it enhances deep-freezing efficiency, reducing overall freezing time for high-volume production.

FAQ

FAQ About LHC

What refrigerants can the LHC evaporator unit work with?

It is fully compatible with CO₂, NH₃ (ammonia), and HFC refrigerants, supporting both traditional and eco-friendly refrigeration systems.

How durable is the Aluminum evaporator fin in long-term use?

The Aluminum evaporator fins (or Al-Mg alloy fins) are designed to withstand air velocities over 10 m/s and 24/7 operation, with no deformation. Their hydrophilic coating (optional) also resists frost buildup, extending service life.

Is this evaporator for IQF suitable for large food chunks?

No, it is optimized for small to medium-sized products (granular, sliced, diced). Large chunks cannot be fully suspended by the airflow, leading to uneven freezing.

What maintenance is required for the Stainless Steel evaporator tubes?

The Stainless Steel evaporator tubes are corrosion-resistant; regular cleaning (monthly for high-volume use) and annual inspections of tube-fin bonds are recommended to maintain peak efficiency.