Pulsing steam solar water pump

A solar heated, steam driven water pump comprising:

• An alternating steam pressurization and vacuum production means comprising a portion of a cavity which portion being capable of being strongly heated and then cooled in such a manner that during the heated period this heated part of the cavity is able firstly to receive a flow of water from another part of the same cavity, the pressure for said water delivery from one to the other part of said cavity being a low pressure relative to the absolute pressures periodically produced within the cavity, and secondly to convert the water to steam pressure because of the enclosure of the cavity and during the cooled period that same part of the cavity is able to provide a vacuum by condensation of the steam produced during the former heated period and,
• Steam generating chamber heating means and,
• Low pressure periodic water circulating means consisting of water receiving and water impelling means in the form of a chamber that is another part of the same cavity used for pressurization and vacuum formation, said receiving and impelling means being a chamber capable of alternately receiving water from a source through a check valve under the influence of a vacuum within the cavity and said cavity being capable of expelling subsequently that water through another check valve during a steam generation period when steam acts to place pressure on the water and,
• Internal water circulation means in the form of a pump within the cavity by which means a small quantity of that water received into the cavity is moved to the steam generation chamber,
• Internal water circulation control means by which intermittent flow of internal water is initiated when steam generating temperature is reached in the steam generating chamber and the water receiving means is filled and is interrupted when steam has driven water from the water receiving means.