电制冷风冷热泵机组是指利用风冷冷却的蒸汽压缩式制冷机组，其压缩机类型主要有螺杆式、涡旋式和活塞式。其中螺杆式压缩机被用于大型的风冷热泵机组，涡旋式和活塞式多用于小型或模块式风冷热泵机组。
Electric refrigeration air-cooled heat pump unit is a steam compression refrigeration unit using air-cooled cooling. Its compressor types are mainly screw type, scroll type and piston type. Screw compressor is used in large air-cooled heat pump units, scroll and piston are mostly used in small or modular air-cooled heat pump units.