Shanghai Heleng manufactures high-performance Electric Defrosting air coolers and evaporators. These units eliminate ice buildup and optimize thermal efficiency in commercial cold storage rooms. As a trusted one-stop refrigeration solutions partner, we engineer fully integrated systems for stable freezing. Our products withstand demanding industrial environments while minimizing total energy consumption.
Supported by Luohe Tian Shun Cold Chain Group, we deliver reliable turnkey facilities. Every component operates in absolute harmony. Our electric defrost unit coolers perfectly match our insulated panels, industrial doors, and heavy-duty compressor sets. By optimizing the thermodynamic loop, we dramatically lower energy use. This prevents heat leakage during automated frost removal, protecting sensitive stock.
To simplify technical procurement, our product portfolio is categorized by temperature application and motor layout. This systematic approach ensures you select a system with the exact heating capacity and air throw required for your spatial layout.
Our heavy-duty evaporator lines are classified into DL, DD, and DJ series. This ensures exact thermal matching across high, medium, and low-temperature applications.
| Series | Application Type | Target Room Temperature | Standard Fin Spacing | Defrost Method |
|---|---|---|---|---|
| DL Series | Fresh-keeping & Chilling | 0°C and above | 4.5 mm | Low-density Electric Heating |
| DD Series | Standard Cold Storage | -18°C to -25°C | 6.0 mm | Medium-density Electric Heating |
| DJ Series | Deep & Blast Freezing | -25°C and below | 9.0 mm | High-density Electric Heating |
Each series uses premium electrical heating tubes. These are strategically positioned throughout the coil block and drain pan. This placement facilitates quick ice clearance and prevents refreezing during the drain cycle.
We scale units physically from 2-motor to 4-motor modular designs. This allows buyers to select the appropriate air distribution volume. Increasing the motor count enhances total air throw and static pressure. This makes our coolers ideal for long or high-ceilinged rooms. Every fan motor is dynamically balanced and features thermal protection for continuous, low-noise performance.
Shanghai Heleng prides itself on engineering excellence. We utilize premium components and advanced structural designs. This guarantees our units achieve a long, low-maintenance service life.
Every evaporator uses high-heat-transfer copper tubes with internal grooving. This maximizes refrigerant turbulence and overall heat transfer coefficients. Aluminum fins are mechanically expanded to form a seamless bond with the copper lines. We offer customized fin spacing options from 4.5mm up to 9.0mm. This delays frost bridging and extends the runtime between active heating cycles. Our systems are fully compatible with global refrigerants like R404A, R507A, and R448A.
To ensure reliable frost removal, stainless steel heating elements are directly embedded into the coil bundle and drip pan. We integrate several built-in safety features to secure these systems under wet, low-temperature conditions.
Waterproof Junction Boxes: Sealed IP54 or IP65 electrical terminal boxes prevent moisture ingress.
Overheat Protection Thermostats: Built-in thermal limiters shut down power when coil temperatures rise above safe clearance levels.
Insulated Terminals: Fully vulcanized and sealed heater ends completely eliminate current leakage.
A balanced refrigeration system requires a seamless connection between low-side evaporators and high-side condensing machinery. Mismatched components often lead to low efficiency, liquid slugging, and electrical faults.
Our air coolers are designed for seamless integration with market-leading compressor units. This includes respected brands like Bitzer, Fusheng, and Heron. Whether using a multi-compressor rack or a heavy-duty screw compressor set, our engineers optimize expansion valves. We also fine-tune control panel parameters. This ensures defrosting cycles trigger in perfect harmony with compressor pump-down procedures.
We deploy our Electric Defrosting systems across diverse, demanding industries. They maintain rigorous temperature stability in cold chain logistics centers. Our equipment also handles the intense humidity of food processing rooms. Furthermore, they satisfy the strict sanitation requirements of biopharmaceutical clean rooms, laboratories, and supermarkets worldwide.
By choosing us as your production partner, you secure world-class infrastructure and strict quality control.
Our intelligent production base spans over 5,000 square meters. It features computerized punching machines, automated tube expanders, and CNC sheet metal bending equipment. Every unit cooler undergoes a rigorous 25-bar nitrogen pressure holding test. This testing lasts a minimum of 24 hours. We also conduct high-voltage electrical insulation testing prior to packaging.
As a core subsidiary of the Luohe Tian Shun Cold Chain Group, we combine localized technical agility with vast group-level resources. We handle massive commercial refrigeration infrastructure projects globally. Our team currently serves over 300 international clients with reliable equipment and financial security.
Selecting the correct unit cooler minimizes operating costs and protects cargo from temperature fluctuations. We design customizable evaporators with capacities spanning from 2kW to 150kW. Engineers must evaluate room dimensions, product turnover rates, and local humidity. You must also consider your building's specific electrical grid standards.
As a dedicated Electric Defrosting manufacturer, we encourage you to contact our technical team today. We will provide detailed system layouts, engineering schematics, and competitive price quotes for your project.
Electric defrosting offers high reliability and easy automatic control. It requires far less complex piping than hot gas defrost systems. This makes it our preferred recommendation for commercial cold rooms and medium-sized setups. It consistently delivers lower initial installation costs and straightforward maintenance.
Frequency depends entirely on room temperature, humidity, and door opening rates. Typical commercial systems run automated cycles two to four times per day. Our smart control systems expertly optimize this timing. We initiate frost removal only when ice buildup reduces heat transfer, saving you significant energy.
Yes, we customize electrical heating elements and fan motors to match global power grids. Our engineering team readily accommodates 380V/3P/50Hz, 220V/3P/60Hz, and various other regional voltage specifications.
Every evaporator manufactured at our facility undergoes a strict 25-bar nitrogen pressure holding test. This guarantees leak-free operation in the field. We simultaneously run high-voltage electrical safety and insulation tests on all heating elements before final approval.
