Patents by Inventor Robert E. Stabley
Robert E. Stabley 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).
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Patent number: 11378088Abstract: 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: GrantFiled: June 4, 2010Date of Patent: July 5, 2022Assignee: Johnson Controls Tyco IP Holdings LLPInventors: 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
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Patent number: 8337144Abstract: A system and method is provided for detecting and controlling rotating stall in the diffuser region of a compressor. A pressure transducer is placed in the gas flow path downstream of the impeller, preferably in the compressor discharge passage or the diffuser, to measure the sound or acoustic pressure phenomenon. Next, the signal from the pressure transducer is processed either using analog or digital techniques to determine the presence of rotating stall. Rotating stall is detected by comparing the detected energy amount, which detected energy amount is based on the measured acoustic pressure, with a predetermined threshold amount corresponding to the presence of rotating stall. Finally, an appropriate corrective action is taken to change the operation of the compressor in response to the detection of rotating stall.Type: GrantFiled: December 3, 2010Date of Patent: December 25, 2012Assignee: Johnson Controls Technology CompanyInventors: Robert E. Stabley, E. Curtis Eichelberger
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Publication number: 20120100011Abstract: 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: ApplicationFiled: June 4, 2010Publication date: April 26, 2012Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: 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
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Publication number: 20110076131Abstract: A system and method is provided for detecting and controlling rotating stall in the diffuser region of a compressor. A pressure transducer is placed in the gas flow path downstream of the impeller, preferably in the compressor discharge passage or the diffuser, to measure the sound or acoustic pressure phenomenon. Next, the signal from the pressure transducer is processed either using analog or digital techniques to determine the presence of rotating stall. Rotating stall is detected by comparing the detected energy amount, which detected energy amount is based on the measured acoustic pressure, with a predetermined threshold amount corresponding to the presence of rotating stall. Finally, an appropriate corrective action is taken to change the operation of the compressor in response to the detection of rotating stall.Type: ApplicationFiled: December 3, 2010Publication date: March 31, 2011Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Robert E. STABLEY, E. Curtis EICHELBERGER
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Patent number: 7905102Abstract: A stability control algorithm is provided for a centrifugal compressor. The stability control algorithm is used to control a variable geometry diffuser and a hot gas bypass valve (when provided) in response to the detection of compressor instabilities. The stability control algorithm can adjust the position of a diffuser ring in the variable geometry diffuser in response to the detection of a surge condition or a stall condition. The diffuser ring in the variable geometry diffuser can be adjusted to determine an optimal position of the diffuser ring. The stability control algorithm can also be used to open a hot gas bypass valve in response to the detection of continued surge conditions.Type: GrantFiled: April 14, 2008Date of Patent: March 15, 2011Assignee: Johnson Controls Technology CompanyInventors: Mark R. Bodell, II, Robert E. Stabley, IV, Wanda J. Miller
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Patent number: 7905702Abstract: A system and method is provided for detecting and controlling rotating stall in the diffuser region of a compressor. A pressure transducer is placed in the gas flow path downstream of the impeller, preferably in the compressor discharge passage or the diffuser, to measure the sound or acoustic pressure phenomenon. Next, the signal from the pressure transducer is processed either using analog or digital techniques to determine the presence of rotating stall. Rotating stall is detected by comparing the detected energy amount, which detected energy amount is based on the measured acoustic pressure, with a predetermined threshold amount corresponding to the presence of rotating stall. Finally, an appropriate corrective action is taken to change the operation of the compressor in response to the detection of rotating stall.Type: GrantFiled: March 23, 2007Date of Patent: March 15, 2011Assignee: Johnson Controls Technology CompanyInventors: Robert E. Stabley, E. Curtis Eichelberger, Jr.
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Publication number: 20080253877Abstract: A stability control algorithm is provided for a centrifugal compressor. The stability control algorithm is used to control a variable geometry diffuser and a hot gas bypass valve (when provided) in response to the detection of compressor instabilities. The stability control algorithm can adjust the position of a diffuser ring in the variable geometry diffuser in response to the detection of a surge condition or a stall condition. The diffuser ring in the variable geometry diffuser can be adjusted to determine an optimal position of the diffuser ring. The stability control algorithm can also be used to open a hot gas bypass valve in response to the detection of continued surge conditions.Type: ApplicationFiled: April 14, 2008Publication date: October 16, 2008Inventors: Mark R. Bodell, Robert E. Stabley, Wanda J. Miller
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Publication number: 20080232950Abstract: A system and method is provided for detecting and controlling rotating stall in the diffuser region of a compressor. A pressure transducer is placed in the gas flow path downstream of the impeller, preferably in the compressor discharge passage or the diffuser, to measure the sound or acoustic pressure phenomenon. Next, the signal from the pressure transducer is processed either using analog or digital techniques to determine the presence of rotating stall. Rotating stall is detected by comparing the detected energy amount, which detected energy amount is based on the measured acoustic pressure, with a predetermined threshold amount corresponding to the presence of rotating stall. Finally, an appropriate corrective action is taken to change the operation of the compressor in response to the detection of rotating stall.Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Robert E. Stabley, E. Curtis Eichelberger