Patents by Inventor Giuseppe Giovanni RENNA

Giuseppe Giovanni RENNA 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).

  • Control method for defrosting the outdoor coil of a heat pump machine
    Patent number: 10591195
    Abstract: Method for controlling defrosting of the outer exchanger of a heat pump machine, comprising the steps of: defining in the outer air temperature/evaporation temperature plane three zones; acquiring the outer air temperature and the evaporation temperature; individuating in which zone of the Taria_ext/T_evap plane the point falls, identified by the two acquired temperature measures; inverting the machine functioning cycle when the point falls in an unsafe zone; reducing the rotation speed of the compressor of said heat pump machine when the point falls in an intermediate zone.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: March 17, 2020
    Assignee: INGERSOLL-RAND INTERNATIONAL LTD
    Inventor: Giuseppe Giovanni Renna
  • CONTROL METHOD FOR DEFROSTING THE OUTDOOR COIL OF A HEAT PUMP MACHINE
    Publication number: 20180245830
    Abstract: Method for controlling defrosting of the outer exchanger of a heat pump machine, comprising the steps of: defining in the outer air temperature/evaporation temperature plane three zones; acquiring the outer air temperature and the evaporation temperature; individuating in which zone of the Taria_ext/T_evap plane the point falls, identified by the two acquired temperature measures; inverting the machine functioning cycle when the point falls in an unsafe zone; reducing the rotation speed of the compressor of said heat pump machine when the point falls in an intermediate zone.
    Type: Application
    Filed: September 4, 2015
    Publication date: August 30, 2018
    Inventor: Giuseppe Giovanni RENNA