Patents by Inventor Roberto Gianfrancesco

Roberto Gianfrancesco has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Heat pump able to operate with very low external temperature
    Patent number: 6305181
    Abstract: A heat pump in which there are provided two separate but mutually interacting and communicating absorption devices, in which in the evaporator of the first device a liquid is present having a low freezing point such as to be able to operate as a heat pump recovering heat from an external fluid having a temperature even of 0° C. or less.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: October 23, 2001
    Inventor: Roberto Gianfrancesco
  • Method and apparatus for the absorption-cooling of a fluid
    Patent number: 5177979
    Abstract: The invention relates to an apparatus for the absorption cooling of a fluid, in particular air.Two separate mutually independent but interacting absorption cooling devices are provided, the cooling system of one of the two devices being used for cooling the absorbent liquid of the other device, this liquid, after dilution, by the fact of having absorbed steam, being boiled by heat provided by condensing steam resulting from boiling the diluted absorbent liquid of the initially considered absorption device by means of an external burner.The pressure in each component of the absorption device used for directly cooling the air is less than the pressure in the corresponding component of the other device, the absorbent liquid of which is cooled by external cooling fluid. The two devices are provided with heat exchangers cooled with air, such heat exchangers being serially arranged so that the same airflow passes therethrough.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: January 12, 1993
    Inventor: Roberto Gianfrancesco