The technology of ultra-low temperature heat pump with ejector-enhanced vapor injection (EVI), full DC inverter, and intelligent defrost can effectively meet the three-in-one demands of heating, cooling, and domestic hot water even in extremely cold environments.
Ejector-enhanced vapor injection (EVI) technology
A medium-pressure gaseous refrigerant is injected midway into the compressor, turning single-stage compression into quasi two-stage compression. This allows it to maintain heating capacity, energy efficiency, and compressor integrity without auxiliary electric heating even in extremely cold conditions of -25℃ to -40℃.
Full DC Inverter
The full DC inverter is the intelligent stepless power system of the heat pump, with the compressor and fan fully DC inverter-driven, capable of automatically adjusting speed according to heating or cooling demand. Combined with EVI technology, it achieves **stable heating at -40°C, 30–50% energy savings, ±0.5°C temperature control, quiet operation, and long lifespan**, serving as the core guarantee for high efficiency, stability, and comfort in ultra-low temperature heat pumps.
Intelligent Defrost
Intelligent defrost relies on multi-sensor data collection and main control AI algorithms to monitor environmental temperature, fin temperature, humidity, operating current, exhaust temperature, pressure difference, and other parameters in real time. It accurately determines the degree of frosting, automatically triggers defrosting, and ends defrosting automatically. At the same time, by coordinating hot gas bypass and non-stop defrosting logic, it achieves demand-based defrosting, efficient frost removal, and uninterrupted heating.
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