DC inverter condensing unit

Transfrio DC inverter condensing unit utilizes a DC-driven rotary compressor with variable-frequency modulation, adjusting motor speed to match real-time cooling demands. Refrigerant (e.g., R410A) absorbs heat via the evaporator, while the PID-regulated electronic expansion valve (EEV) precisely controls superheat by dynamically adjusting refrigerant flow. The integrated four-way valve enables reversible operation for defrosting. A 485-communication-enabled controller processes sensor feedback (temperature, pressure) to optimize compressor frequency and condenser fan speed, ensuring evaporator temperature stability.

1. Components

DC inverter condensing unit is more efficient with these main components: DC inverter compressor, electronic expansion valve, 4-way reverse valve, and smart control system.

2. Features

Configured with all these efficient parts, Transfrio DC inverter condensing units are with following technical features: 

• Adaptive Frequency Control: PID logic minimizes compressor cycling, reducing power surges and cutting energy use by 45–55% versus constant frequency condensing units.
• Multi-Functional Valve Assembly: Four-way valve enables reverse defrost.
• Precision Regulation: EEV and inverter coordination maintains temperature uniformity, critical for vaccine storage and precision manufacturing.
• 7-Inch HMI Touchscreen Controller: Real-time visualization of operating parameters (suction/discharge pressure, energy consumption), programmable PID settings, and alarm diagnostics.
• IoT Integration: Built-in 485 Modbus RTU protocol supports remote monitoring/control via SCADA/BMS systems or mobile apps.

3. Application

• Cold Storage: In cold storage facilities, DC inverter condensing units can adjust compressor speed and provide consistent cooling. They can handle temperature ranges from 10°C to -35°C (50°F to -31°F), making them suitable for both refrigerated and frozen storage.

• Food Preservation: By avoiding the frequent on/off cycling of fixed-speed compressors, these units prevent temperature fluctuations that can affect food storage conditions, thereby enhancing food safety and reducing spoilage.

• Battery Thermostat Control: DC inverter condensing units can precisely control temperatures to ensure batteries operate efficiently and safely, extending their lifespan and improving overall system reliability. 

• Chemical Medicines Storage: In the pharmaceutical industry, precise temperature control is essential for storing chemical medicines and vaccines. The DC inverter condensing unit's ability to maintain stable temperatures helps to preserve the efficacy of these sensitive materials.

4. Our Cases

5. Other Related Products

Except for DC inverter condensing unit, we also have other different refrigeration products. 

• constant frequency condensing unit
• small condenser unit
• complete set of refrigeration unit