Patents by Inventor Gail Elaine Lindberg

Gail Elaine Lindberg 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).

  • Expansion device control system for heating, ventilation, and air conditioning (HVAC) unit
    Patent number: 11340002
    Abstract: A heating, ventilating, and air conditioning (HVAC) system that includes a vapor compression system having a refrigerant, a compressor of the vapor compression system configured to circulate the refrigerant through the vapor compression system, an expansion device of the vapor compression system configured to adjust a flow of the refrigerant through the vapor compression system, and a controller configured to adjust a position of the expansion device based on a measured amount of superheat of the refrigerant entering the compressor, a measured discharge temperature of the refrigerant leaving the compressor, or a combination thereof, such that the measured amount of superheat of the refrigerant entering the compressor reaches a target amount of superheat, the measured discharge temperature of the refrigerant leaving the compressor reaches a target discharge temperature, or a combination thereof.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: May 24, 2022
    Assignee: Johnson Controls Tyco IP Holdings LLP
    Inventors: Gail Elaine Lindberg, Curtis Christian Crane, Carlos Jose Uribe
  • CONTROL SYSTEM FOR HVAC UNIT
    Publication number: 20210010732
    Abstract: A heating, ventilating, and air conditioning (HVAC) system that includes a vapor compression system having a refrigerant, a compressor of the vapor compression system configured to circulate the refrigerant through the vapor compression system, an expansion device of the vapor compression system configured to adjust a flow of the refrigerant through the vapor compression system, and a controller configured to adjust a position of the expansion device based on a measured amount of superheat of the refrigerant entering the compressor, a measured discharge temperature of the refrigerant leaving the compressor, or a combination thereof, such that the measured amount of superheat of the refrigerant entering the compressor reaches a target amount of superheat, the measured discharge temperature of the refrigerant leaving the compressor reaches a target discharge temperature, or a combination thereof.
    Type: Application
    Filed: December 4, 2018
    Publication date: January 14, 2021
    Inventors: Gail Elaine Lindberg, Curtis Christian Crane, Carlos Jose Uribe
  • Startup control system and method for a multiple compressor chiller system
    Patent number: 7231773
    Abstract: A startup control algorithm for a multiple compressor liquid chiller system is provided wherein the maximum number of compressors to be started to satisfy system load conditions is provided. The control algorithm designates all of the compressors of the multiple compressor system for starting and reduces the number to be started in response to the satisfaction of several predetermined criteria. The predetermined criteria are related to the leaving chilled liquid temperature, the shutdown time for the chiller system and the last operating time period for the chiller system.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: June 19, 2007
    Assignee: York International Corporation
    Inventors: Curtis Christian Crane, Gail Elaine Lindberg