The utility model discloses a
waste heat recovery system for an outdoor unit of a direct expansion type air conditioner, which belongs to the technical field of energy-saving devices and comprises an outdoor unit, a casing and a heat converter. Wherein a condenser is installed in the outdoor unit, a condensation
pipe is arranged in the condenser, the two ends of the condensation
pipe are communicated with the interior of the room, the condensation
pipe is filled with a
refrigerant for transferring heat, gas or steam can be converted into liquid, and the heat in the condensation pipe is transferred into a medium near the condensation pipe. When the
system runs, fluid used for transferring heat is filled between the
machine shell and the condenser, the pump
machine is installed in the
machine shell, the machine shell is communicated with the condenser, meanwhile, the
evaporation pipe is installed in the machine shell and is aligned with the pump machine, and therefore the pump machine can drive the fluid to flow between the
evaporation pipe and the condensation pipe, and the
heat transfer efficiency is improved. And then
waste heat generated in the air outlet process of the outdoor unit is converted into recyclable energy through a heat exchange technology, so that the problem of serious
energy consumption caused by insufficient heat utilization is solved.