Cold Room Cooling Unit
Brand:RFJ
Model number:DSD-3.7/22
Refrigerating Capacity:3.7KW
Nominal Area:22㎡
Coil Internal Volume:2.3L
Quantity of Fans:2
Description
Soft Dual-Side Air Supply for Medium-Temp Food Processing Storage
The DSD-3.7/22 cold room cooling unit is a compact double outlet air cooler engineered for medium-temperature warehouses and food processing workshops (operating above 8℃). With a 22㎡ heat exchange surface, stable 3700W cooling power and exclusive 6mm wide fin spacing, this refrigeration evaporator delivers gentle, even dual-direction airflow. It eliminates localized overcooling and protects sensitive fresh food, making it the ideal small-scale cooling solution for food sorting and light bulk storage.


Wide 6mm Fin Spacing Reduces Frost Blockage & Cuts Maintenance Workload
Medium-temperature cold rooms handling fruits, vegetables and fresh ingredients carry high humidity that easily clogs narrow fin air coolers with thick frost, forcing frequent shutdown cleaning. This cold room cooling unit adopts a specialized 6mm fin gap design, greatly slowing frost accumulation on coils. Its matched 1600W coil and water dish defrost heating elements shorten defrost duration, lowering monthly maintenance labor and minimizing production downtime for food processing lines.
Corrosion-Proof Aluminum Cabinet & Low-Noise External Rotor Motor
Built for long-term humid food workshop environments, the whole housing uses powder-coated aluminum sheet to resist moisture and chemical corrosion from food cleaning water vapor. Staggered copper tube-aluminum fin coils are mechanically expanded for tight bonding and efficient heat exchange. Fitted with quiet external rotor fan motors, the dual φ350 fans run at low noise levels, creating a comfortable working environment for on-site food sorting staff without disturbing daily operation.

Parameter Table
| Model | DSD-3.7/22 |
|---|---|
| Cooling Capacity | 3700W |
| Heat-exchange Area | 22㎡ |
| Tube Volume | 5.3L |
| Inlet/Outlet Coupling | φ16mm Inlet / φ22mm Outlet |
| Fan Specs | 2x140W |
| Coil Defrost Power | 1600W |
| Water Dish Defrost Power | 1600W |
Sizing Reference: This cold room cooling unit fits small 20–30㎡ medium-temperature cold storage above 8℃, perfect for fruit sorting rooms, small fresh food retail back storage and light food processing workshops.
Company Profile

Shenzhen Ruifujie Technology Co., Ltd.
Ruifujie specializes in manufacturing full-series refrigeration air coolers and supporting cold chain equipment. We provide flexible OEM/ODM customization for all air cooler models, with strict factory performance testing before shipment. Reliable product quality and dedicated technical support help us build stable cooperation with global cold storage engineering clients.
high quality
Advanced Equipment
Professional Team
One-Stop Solution
16+ Years Experience
Founded in 2009
16 years of experience
Sea-near factory
Fast and convenient road
transport and air freight
Freight Cooperation
Favorable transportation
price and safety
global shipping
7-15 days (under 20pcs)
within 30 days (over 20pcs)
Main Product

Scroll Compressor

Rotary Compressor

Piston Compressor

Semi-Hermetic Compressor

Screw Compressor

Condensing Unit

Cold Room Equipment

Quick-freezing Equipment
Certifications






FAQ
01.What storage scenarios is the 6mm wide fin DSD series more suitable for than 4.5mm fin DSL models?
02.Is this small DSD-3.7/22 cold room cooling unit easy to install in narrow workshop ceilings?
03.Does dual-side soft airflow cause uneven temperature inside small cold rooms?
04.Can you adjust the defrost heating power of this cold room cooling unit per client's warehouse humidity?
05.How long is the warranty period for your cold storage air coolers?

Request Small Cold Storage Matching & Budget Quotation
If you run small food processing plants or fresh retail cold storage projects, send us your warehouse size, working temperature and humidity data. Our refrigeration technical team will match the most cost-effective cold room cooling unit and send you a clear budget quotation within 24 hours.
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