The RFJ-D1.9E9 is a ceiling-suspended industrial refrigeration evaporator specifically designed to maintain deep sub-zero conditions around the -35 °C mark. Powered by a single high-performance 400 mm external rotor fan, this unit delivers a strong air volume of 3900 m³/h with a 10-meter air throw. This compact, single-fan configuration is ideal for small-to-medium walk-in freezers, cold storage lockers, and blast freezing prep rooms, ensuring rapid temperature pull-down and uniform air distribution without taking up valuable storage space.

Operating at deep-freeze temperatures means dealing with rapid moisture condensation and frost. To keep your system running longer between defrost cycles, the RFJ-D1.9E9 features a wide 9.0 mm fin spacing (3 FPI) and a staggered copper tube layout. The inner-grooved copper tubes maximize internal surface area for efficient heat exchange, while the wide fin channels prevent early frost bridging from choking the airflow. This keeps your cooling cycles highly efficient and lowers daily power consumption.

For trouble-free operation in harsh, high-humidity freezing environments, the evaporator is constructed with an outer casing of pre-painted steel sheets and corrosion-resistant aluminum internal tube sheets. The 2.4 kW electric defrost system is split between the main coil block and the drainage pan, ensuring that accumulated ice is completely melted and cleared through the 1" drain port without refreezing inside the unit. Every unit undergoes a rigorous 2.8 MPa clean air pressure test at the factory to guarantee leak-free field performance.

With over two decades of technical expertise in commercial refrigeration engineering, Ruifujie has grown into a modernized manufacturing enterprise. Our production facility develops high-precision refrigeration compressors—including advanced scroll, screw, and semi-hermetic piston designs—alongside heavy-duty walk-in cold storage systems, blast freezers, and industrial ice plants. Backed by automated production lines and strict quality standards, we provide comprehensive OEM/ODM customization services to align with specialized corporate setups and project requirements worldwide. Today, Ruifujie cooling equipment is highly regarded for its field stability and excellent cost-efficiency, with active exports to key global markets, including Russia, the United States, and the United Arab Emirates.

In deep sub-zero environments, moisture in the air freezes on contact with the cold coil surface almost instantly. If the fin spacing is too narrow, ice will bridge the gap within hours, choking off the airflow and forcing the system to stop cooling. The wide 9.0 mm spacing allows significant frost to accumulate safely before a defrost is needed, keeping your cooling cycles longer and more energy-efficient.

The 180 W external rotor fan motor is engineered to support both 220V and 380V power configurations. This dual-voltage flexibility makes it highly versatile: it can easily be integrated into smaller commercial facilities running on standard power or heavy industrial plants utilizing three-phase power grids.

During a defrost cycle, the melted ice from the main coil drips down into the drain pan. Because the ambient room temperature is still extremely cold, that water would instantly refreeze and clog the 1" drain line if the pan were cold. Placing separate, dedicated heating elements in both the coil block and the pan ensures all water stays liquid until it completely exits the cold room.

Yes, Ruifujie operates a tiered pricing framework specifically tailored for cold room contractors, international commercial distributors, and engineering networks. Our pricing structure is highly competitive and is optimized based on your annual procurement volume, container loading efficiency, and specific project technical requirements.

Absolutely. We provide comprehensive OEM/ODM customization services to align our equipment with your specialized corporate setups or branding requirements worldwide. While our standard casing uses pre-painted steel sheets, we can customize units with premium SUS304 or SUS316 stainless steel housings for food-processing plants or marine applications where hygiene and corrosion resistance are top priorities.

Ruifujie provides tiered wholesale pricing and technical support for cold room contractors, engineering networks, and commercial refrigeration distributors. If you have an upcoming deep-freeze project, send us your cold room dimensions, required storage temperatures, and local electrical standards. Our technical sales team will assist you with equipment matching and provide a detailed commercial quote within 8 hours.