Industrial unit coolers for cold rooms, walk-in freezers & blast freezers. DL/DD/DJ series, 1.4–114kW. Electric, water or hot gas defrost. Copper tube aluminum fin coil. Free technical evaluation.
Industrial unit cooler evaporator for cold rooms, walk-in freezers and blast freezers. DL/DD/DJ series cover medium, low and ultra-low temperature applications from 1.4kW to 114kW. Copper tube aluminum fin coil with mechanical expansion for tight bonding. Electric, water or hot gas defrost options. Galvanized steel casing with powder coating. Compatible with R22, R404A, R507A, R407C, R134a. Custom capacities and voltages available. OEM support.
| Parameter | Details |
|---|---|
| Product Type | Unit Cooler Evaporator (Air Cooler) |
| Series | DL (medium temp, ~0°C) / DD (low temp, -18°C) / DJ (ultra-low temp, ≤-25°C) |
| Cooling Capacity | 1.4 kW – 114 kW |
| Coil Material | Copper tube (thick wall) × Aluminum fin |
| Fin Type | Corrugated / Louver, high-efficiency aluminum |
| Fin Spacing | 4.5mm (MT) / 7.0mm (LT) / Max 12mm (customizable) |
| Casing Material | Galvanized steel sheet with powder coating / Stainless steel (optional) |
| Fan Diameter | 300mm / 400mm / 450mm / 500mm / 630mm / 710mm |
| Fan Type | Axial, high-efficiency, low noise |
| Fan Motor Power | 90W – 250W per fan (standard); EC fan motors optional |
| Number of Fans | 1 – 4 fans |
| Defrost Type | Electric heating tube / Water defrost / Hot gas defrost |
| Electric Heater Power | 0.7kW – 6.0kW (drip tray) / 2.1kW – 4.0kW (coil) |
| Air Flow Rate | 1,710 m³/h – 4,950 m³/h per fan |
| Refrigerant Inlet | Φ12mm – Φ19mm |
| Refrigerant Outlet | Φ16mm – Φ30mm |
| Compatible Refrigerants | R22, R404A, R507A, R407C, R134a |
| Mounting Type | Ceiling mounted / Wall mounted |
| Surface Treatment | Powder coating (HACCP compliant), anti-corrosion, anti-rust |
Complete Series Coverage – DL, DD and DJ series cover medium temperature (~0°C), low temperature (-18°C) and ultra-low temperature (≤-25°C) applications, providing a one-stop solution for cold room, freezer room and blast freezer projects.
High-Efficiency Heat Transfer – Thick-wall copper tubes and high-efficiency aluminum fins are mechanically expanded for tight tube-to-fin bonding, maximizing heat transfer efficiency and reducing energy consumption.
Flexible Defrost Options – Electric heating tube, water defrost and hot gas defrost are all available. U-shaped tubular electric heating elements are inserted into the coil for short defrosting time and effective results.
Corrosion-Resistant Casing – Galvanized steel casing with powder coating meets HACCP hygiene standards, providing anti-corrosion and anti-rust protection with long service life. Stainless steel casing is available for food-grade applications.
Quiet & Efficient Fans – High-efficiency axial fans provide large airflow, long air throw and low noise. EC fan motors are available for energy-saving operation.
Compact & Space-Saving – Compact structure and lightweight design do not occupy the usable area of the cold storage, maximizing storage capacity.
Uniform Temperature Distribution – Optimized coil and fan design ensures uniform temperature distribution and rapid cooling of stored food, significantly enhancing preservation quality.
Stable Bulk Supply – Standard models ship in 15–25 days, supporting rolling replenishment and reducing inventory capital occupation.
OEM & ODM Support – Custom logo, packaging, and product labeling available. Can produce according to customer drawings or specifications.
Export Packaging – Seaworthy carton and pallet packaging, suitable for long-distance ocean shipping.
100% Pressure Tested – All products undergo pressure retention nitrogen charging process before leaving the factory.
For technical drawings, samples, or bulk pricing, contact us directly.
Send your cold room specifications (temperature, room size, refrigerant type) for a free technical evaluation and quotation within 24 hours. OEM and ODM orders welcome.
