Patents by Inventor Robert J. Roth
Robert J. Roth 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: 11035750Abstract: Methods and systems for leak detection in a fluid compression system using a purge system are disclosed herein. In an embodiment, a method for detecting leaks includes determining, during a period of vacuum, a purge exhaust rate of non-condensables from a purge system integrated with a chiller unit. The method includes determining a differential pressure, the differential pressure based on a vacuum side pressure of the chiller unit, where the vacuum side pressure includes at least one of a pressure of a condenser and pressure of an evaporator. The method includes calculating, via a controller, the purge exhaust rate and the differential pressure to identify a leak size based at least in part on the purge exhaust rate.Type: GrantFiled: September 30, 2019Date of Patent: June 15, 2021Assignee: TRANE INTERNATIONAL INC.Inventor: Robert J. Roth
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Publication number: 20200110000Abstract: Methods and systems for leak detection in a fluid compression system using a purge system are disclosed herein. In an embodiment, a method for detecting leaks includes determining, during a period of vacuum, a purge exhaust rate of non-condensables from a purge system integrated with a chiller unit. The method includes determining a differential pressure, the differential pressure based on a vacuum side pressure of the chiller unit, where the vacuum side pressure includes at least one of a pressure of a condenser and pressure of an evaporator. The method includes calculating, via a controller, the purge exhaust rate and the differential pressure to identify a leak size based at least in part on the purge exhaust rate.Type: ApplicationFiled: September 30, 2019Publication date: April 9, 2020Inventor: Robert J. ROTH
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Patent number: 10508841Abstract: Systems and methods for controlling a cooling circuit for a variable frequency drive (VFD) in an HVACR system are disclosed. The method includes determining, by a controller, an operating condition of a heat sink associated with the VFD. The controller determines whether a temperature of the heat sink is greater than or equal to a heat sink temperature threshold. The method further includes enabling a bypass flow control device in response to the heat sink temperature being greater than or equal to the heat sink temperature threshold.Type: GrantFiled: September 15, 2017Date of Patent: December 17, 2019Assignee: TRANE INTERNATIONAL INC.Inventor: Robert J. Roth
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Patent number: 10429266Abstract: Methods and systems for leak detection in a fluid compression system using a purge system are disclosed herein. In an embodiment, a method for detecting leaks includes determining, during a period of vacuum, a purge exhaust rate of non-condensables from a purge system integrated with a chiller unit. The method includes determining a differential pressure, the differential pressure based on a vacuum side pressure of the chiller unit, where the vacuum side pressure includes at least one of a pressure of a condenser and pressure of an evaporator. The method includes calculating, via a controller, the purge exhaust rate and the differential pressure to identify a leak size based at least in part on the purge exhaust rate.Type: GrantFiled: October 25, 2017Date of Patent: October 1, 2019Assignee: TRANE INTERNATIONAL INC.Inventor: Robert J. Roth
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Publication number: 20180120194Abstract: Methods and systems for leak detection in a fluid compression system using a purge system are disclosed herein. In an embodiment, a method for detecting leaks includes determining, during a period of vacuum, a purge exhaust rate of non-condensables from a purge system integrated with a chiller unit. The method includes determining a differential pressure, the differential pressure based on a vacuum side pressure of the chiller unit, where the vacuum side pressure includes at least one of a pressure of a condenser and pressure of an evaporator. The method includes calculating, via a controller, the purge exhaust rate and the differential pressure to identify a leak size based at least in part on the purge exhaust rate.Type: ApplicationFiled: October 25, 2017Publication date: May 3, 2018Inventor: Robert J. ROTH
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Publication number: 20180073787Abstract: Systems and methods for controlling a cooling circuit for a variable frequency drive (VFD) in an HVACR system are disclosed. The method includes determining, by a controller, an operating condition of a heat sink associated with the VFD. The controller determines whether a temperature of the heat sink is greater than or equal to a heat sink temperature threshold. The method further includes enabling a bypass flow control device in response to the heat sink temperature being greater than or equal to the heat sink temperature threshold.Type: ApplicationFiled: September 15, 2017Publication date: March 15, 2018Inventor: Robert J. Roth
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Patent number: 6705100Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.Type: GrantFiled: May 15, 2003Date of Patent: March 16, 2004Assignee: American Standard International Inc.Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
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Patent number: 6647736Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.Type: GrantFiled: May 15, 2003Date of Patent: November 18, 2003Assignee: American Standard International Inc.Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram, Lori Ann Manning
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Publication number: 20030192333Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.Type: ApplicationFiled: May 15, 2003Publication date: October 16, 2003Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
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Publication number: 20030192332Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.Type: ApplicationFiled: May 15, 2003Publication date: October 16, 2003Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram, Lori Ann Manning
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Patent number: 6564564Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.Type: GrantFiled: October 22, 2001Date of Patent: May 20, 2003Assignee: American Standard International Inc.Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
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Publication number: 20030074909Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.Type: ApplicationFiled: October 22, 2001Publication date: April 24, 2003Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
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Patent number: 5537835Abstract: A system for transferring a refrigerant from a first refrigerant vessel having at least one refrigerant port to a second refrigerant vessel having at least one refrigerant port is disclosed. This system includes a condenser, a pump assembly having an inlet and an outlet, and conduits for operatively connecting the condenser and pump assembly to the first and second refrigerant vessel in several configurations. The pump assembly includes two pumps operated by one motor and interconnected to either provide series or parallel pumping. This system may also include a transfer tank interposed between the first and second refrigerant vessels. The transfer tank can be used to condense the vapor phase of the refrigerant removed from the first refrigerant vessel and collect the condensed refrigerant in one configuration, then to transfer the condensed refrigerant to the second refrigerant vessel in an alternate configuration.Type: GrantFiled: September 28, 1995Date of Patent: July 23, 1996Assignee: American Standard Inc.Inventor: Robert J. Roth
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Patent number: 5533345Abstract: A system for transferring a refrigerant from a first refrigerant vessel having at least one refrigerant port to a second refrigerant vessel having at least one refrigerant port is disclosed. This system includes a condenser, a pump assembly having an inlet and an outlet, and conduits for operatively connecting the condenser and pump assembly to the first and second refrigerant vessel in several configurations. The pump assembly includes two pumps operated by one motor and interconnected to either provide series or parallel pumping. This system may also include a transfer tank interposed between the first and second refrigerant vessels. The transfer tank can be used to condense the vapor phase of the refrigerant removed from the first refrigerant vessel and collect the condensed refrigerant in one configuration, then to transfer the condensed refrigerant to the second refrigerant vessel in an alternate configuration.Type: GrantFiled: August 12, 1994Date of Patent: July 9, 1996Assignee: American Standard Inc.Inventor: Robert J. Roth
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Patent number: 5272882Abstract: A portable, refrigerant recycle/recovery/charging system comprising: a storage tank; a low pressure refrigeration system; and a housing. The housing includes liquid, vapor, pump and condenser sections. The liquid section has a liquid inlet, a liquid outlet and a liquid conduit connecting the liquid inlet and the liquid outlet where the liquid conduit includes a liquid flow control device and a liquid condition sensing device. The vapor section has a vapor inlet, a vapor outlet, and a vapor conduit connecting the vapor inlet and the vapor outlet where the vapor conduit includes a vapor flow control device and a vapor condition sensing device. The pump section has a pump inlet, a pump outlet, and a pump conduit connecting the pump inlet and the pump outlet where the pump conduit includes a pump. The condensing section has a condensing inlet, a condensing outlet, and a condensing conduit connecting the condensing inlet and the condensing outlet where the condensing conduit includes a condenser.Type: GrantFiled: January 3, 1992Date of Patent: December 28, 1993Assignee: American Standard Inc.Inventors: Randall L. Degier, Richard L. Groth, Stephen T. Kerr, Ralph C. Mullally, Patrick D. Pruse, Robert J. Roth