Patents by Inventor Rudy Chervil

Rudy Chervil 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).

  • Patent number: 11378088
    Abstract: A control system is provided that can identify the occurrence of a single surge cycle in centrifugal compressor using various methods and devices. Once the occurrence of a single surge cycle is identified, the control system can take remedial action to respond to the surge cycle, such as by adjusting the position of a variable geometry diffuser, and restore the centrifugal compressor to stable operation.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 5, 2022
    Assignee: Johnson Controls Tyco IP Holdings LLP
    Inventors: Steven T. Sommer, Curtis Christian Crane, Florin Iancu, John Trevino, Jr., Robert E. Stabley, Gregory K. Beaverson, Eric J. Smyder, Patrick C. Marks, Rudy Chervil
  • Patent number: 8567207
    Abstract: A system for controlling a centrifugal gas compressor (108) in an HVAC, refrigeration or liquid chiller system (100) in which flow of gas through the compressor is automatically controlled to maintain desired parameters within predetermined ranges so as to prevent stall and surge conditions within the system. A variable geometry diffuser (119) in the compressor controls the refrigerant gas flow at the discharge of the compressor impeller wheel (201). This arrangement reduces mass flow, decrease/eliminate flow-reducing stall, and increases the operating efficiency of the compressor at partial load conditions. The variable geometry diffuser control in combination with a variable speed drive (VSD) (120) increases the efficiency of the compressor at partial system loads, and eliminates the need for pre-rotation vanes at the inlet of the centrifugal compressor.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: October 29, 2013
    Assignee: Johnson Controls & Technology Company
    Inventors: Steven Trent Sommer, John Trevino, Jr., Florin Iancu, Rudy Chervil, Eric John Smyder
  • Publication number: 20120100011
    Abstract: A control system is provided that can identify the occurrence of a single surge cycle in centrifugal compressor using various methods and devices. Once the occurrence of a single surge cycle is identified, the control system can take remedial action to respond to the surge cycle, such as by adjusting the position of a variable geometry diffuser, and restore the centrifugal compressor to stable operation.
    Type: Application
    Filed: June 4, 2010
    Publication date: April 26, 2012
    Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
    Inventors: Steven T. Sommer, Curtis Christian Crane, Florin Iancu, John Trevino, JR., Robert E. Stabley, Gregory K. Beaverson, Eric J. Smyder, Patrick C. Marks, Rudy Chervil
  • Publication number: 20110048046
    Abstract: A system for controlling a centrifugal gas compressor (108) in an HVAC, refrigeration or liquid chiller system (100) in which flow of gas through the compressor is automatically controlled to maintain desired parameters within predetermined ranges so as to prevent stall and surge conditions within the system. A variable geometry diffuser (119) in the compressor controls the refrigerant gas flow at the discharge of the compressor impeller wheel (201). This arrangement reduces mass flow, decrease/eliminate flow-reducing stall, and increases the operating efficiency of the compressor at partial load conditions. The variable geometry diffuser control in combination with a variable speed drive (VSD) (120) increases the efficiency of the compressor at partial system loads, and eliminates the need for pre-rotation vanes at the inlet of the centrifugal compressor.
    Type: Application
    Filed: October 30, 2008
    Publication date: March 3, 2011
    Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
    Inventors: Steven Trent Sommer, John Trevino, JR., Florin Iancu, Rudy Chervil, Eric John Smyder