The present invention discloses an air source
heat pump unit which can provide anti-
frost treatment, and relates to the technical field of anti-
frost treatment for pump units, comprising a protective shell, wherein grids are fixedly connected to the top of the protective shell on all four sides, and an
evaporator is fixedly connected to the top inner surface of the protective shell, and further comprises: a reciprocating flipping mechanism, through the setting of the reciprocating flipping mechanism, a reciprocating screw rod and an L-shaped long plate are adopted, so that a defrost rod can not only reciprocate on the surface of the
evaporator, but also be limited and flipped by a rack plate and a rotary groove at a turning point, so as to achieve double-sided heating and
defrosting, and the defrost rod does not fit the
evaporator, so as to avoid wear on the surface of the evaporator, and the
frost on the surface of the evaporator is melted by the heat of the heating wire, and the mobile
defrosting method replaces the traditional fixed heat source heating, so that the
heat distribution can be controlled more accurately, and the local overheating or uneven heating which may occur in the traditional fixed heat source heating is avoided, thereby saving energy.