Small solar thermal pump Direct Expansion

The present invention discloses a small direct expansion solar heat pump, including steam heat, heat the steam engine includes a housing equipped with left and right place and connected to the displacer and the power piston, the outer shell laying heating pipes and cooling pipes; further comprising a heat-transfer pipe solar panels, bearings and work tank, the solar collector panels are connected via pipe heating pipe; thermal power steam engine piston connecting rod bearing through the work of the working piston tank by connecting rod bearing; bottom of the work tank is also equipped with drainage pipes and pumping pipes; within the drainage pipes and cooling duct in communication, space heating and cooling of the space is filled with an organic working fluid isopentane. The present invention is through the inner solar heating the organic working fluid to drive the expansion piston motion output mechanical energy so that groundwater pumping means to achieve without using any external energy, the extraction of groundwater continues to be utilized, energy saving and renewable cycle.