Patents by Inventor Stephen Sillato
Stephen Sillato 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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Publication number: 20210092880Abstract: A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.Type: ApplicationFiled: December 8, 2020Publication date: March 25, 2021Inventors: Thomas HARVEY, Stephen SILLATO
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Patent number: 10897838Abstract: A cooling system including a primary cooling module supplying refrigerant to a circuit including a thermal load. A secondary cooling module provides a supplemental flow of refrigerant to the circuit upon detection of a deficiency of the primary cooling module. A valve is disposed between the primary: module and the circuit to prevent refrigerant flow between the primary cooling module in the circuit. The secondary cooling module transactions from a standby mode of operation to an online mode of operation and the primary cooling module is deactivated in response to detection of the deficiency of the primary cooling module.Type: GrantFiled: May 7, 2019Date of Patent: January 19, 2021Assignee: Vertiv CorporationInventors: Thomas Harvey, Stephen Sillato
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Patent number: 10465963Abstract: A cooling system has both pumped refrigerant economization and direct expansion cooling. When outside air temperature is low enough that pumped refrigerant economization can provide enough cooling to satisfy cooling demand, only pumped refrigerant economization cooling is used to provide cooling. When outside air temperature is low enough that pumped refrigerant economization can provide some but not all of the cooling needed to satisfy cooling demand, the pumped refrigerant economization is operated at one hundred percent capacity and the direct expansion cooling is operated at a capacity to provide any supplemental cooling that is needed. If the outside air temperature is high enough that pumped refrigerant economization cannot provide any cooling, then only direct expansion cooling is used to provide cooling.Type: GrantFiled: February 20, 2019Date of Patent: November 5, 2019Assignee: Vertiv CorporationInventors: Zhiyong Lin, Steven Madara, Benedict J. Dolcich, Stephen Sillato, Daniel J. SChutte
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Publication number: 20190269043Abstract: A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.Type: ApplicationFiled: May 7, 2019Publication date: August 29, 2019Inventors: Thomas HARVEY, Stephen SILLATO
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Publication number: 20190178546Abstract: A cooling system has both pumped refrigerant economization and direct expansion cooling. When outside air temperature is low enough that pumped refrigerant economization can provide enough cooling to satisfy cooling demand, only pumped refrigerant economization cooling is used to provide cooling. When outside air temperature is low enough that pumped refrigerant economization can provide some but not all of the cooling needed to satisfy cooling demand, the pumped refrigerant economization is operated at one hundred percent capacity and the direct expansion cooling is operated at a capacity to provide any supplemental cooling that is needed. If the outside air temperature is high enough that pumped refrigerant economization cannot provide any cooling, then only direct expansion cooling is used to provide cooling.Type: ApplicationFiled: February 20, 2019Publication date: June 13, 2019Applicant: Vertiv CorporationInventors: Zhiyong LIN, Steven MADARA, Benedict J. DOLCICH, Stephen SILLATO, Daniel J. SCHUTTE
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Patent number: 10292314Abstract: A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.Type: GrantFiled: April 27, 2017Date of Patent: May 14, 2019Assignee: Vertiv CorporationInventors: Thomas Harvey, Stephen Sillato
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Patent number: 10254028Abstract: A cooling system has both pumped refrigerant economization and direct expansion cooling. When outside air temperature is low enough that pumped refrigerant economization can provide enough cooling to satisfy cooling demand, only pumped refrigerant economization cooling is used to provide cooling. When outside air temperature is low enough that pumped refrigerant economization can provide some but not all of the cooling needed to satisfy cooling demand, the pumped refrigerant economization is operated at one hundred percent capacity and the direct expansion cooling is operated at a capacity to provide any supplemental cooling that is needed. If the outside air temperature is high enough that pumped refrigerant economization cannot provide any cooling, then only direct expansion cooling is used to provide cooling.Type: GrantFiled: June 8, 2016Date of Patent: April 9, 2019Assignee: Vertiv CorporationInventors: Zhiyong Lin, Steven Madara, Benedict J. Dolcich, Stephen Sillato, Daniel J. Schutte
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Patent number: 9980413Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.Type: GrantFiled: April 22, 2015Date of Patent: May 22, 2018Assignee: Liebert CorporationInventors: John F. Judge, Timothy J. Schrader, Stephen Sillato, Roger Noll, Gary A. Helmink, Pierpaolo Barbato, Giuseppe Dalla Mana, Lou Monnier, Zhiyong Lin, Benedict J. Dolcich, Daniel J. Schutte, Greg Haggy
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Load estimator for control of vapor compression cooling system with pumped refrigerant economization
Patent number: 9845981Abstract: A cooling system has a direct expansion mode and a pumped refrigerant economizer mode and a controller. The controller includes a load estimator that estimates real-time indoor load on the cooling system and uses the estimated real-time indoor load to determine whether to operate the cooling system in the pumped refrigerant economizer mode or in the direct expansion mode.Type: GrantFiled: October 4, 2013Date of Patent: December 19, 2017Assignee: Liebert CorporationInventors: Zongtao Lu, Greg Haggy, Timothy J. Schrader, Stephen Sillato, John F. Judge -
Publication number: 20170231120Abstract: A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.Type: ApplicationFiled: April 27, 2017Publication date: August 10, 2017Inventors: Thomas HARVEY, Stephen SILLATO
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Patent number: 9706685Abstract: A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.Type: GrantFiled: December 21, 2012Date of Patent: July 11, 2017Assignee: Liebert CorporationInventors: Thomas E. Harvey, Stephen Sillato
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Publication number: 20160363359Abstract: A cooling system has both pumped refrigerant economization and direct expansion cooling. When outside air temperature is low enough that pumped refrigerant economization can provide enough cooling to satisfy cooling demand, only pumped refrigerant economization cooling is used to provide cooling. When outside air temperature is low enough that pumped refrigerant economization can provide some but not all of the cooling needed to satisfy cooling demand, the pumped refrigerant economization is operated at one hundred percent capacity and the direct expansion cooling is operated at a capacity to provide any supplemental cooling that is needed. If the outside air temperature is high enough that pumped refrigerant economization cannot provide any cooling, then only direct expansion cooling is used to provide cooling.Type: ApplicationFiled: June 8, 2016Publication date: December 15, 2016Inventors: Zhiyong LIN, Steven MADARA, Benedict J. DOLCICH, Stephen SILLATO, Daniel J. SCHUTTE
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Publication number: 20160061495Abstract: A cooling system has a cooling circuit that includes an evaporator disposed in a cabinet, a condenser, a compressor, a liquid/vapor separator tank and a liquid pump. The cooling circuit has a mode wherein the compressor and liquid pump are both on with the liquid pump pumping refrigerant through the evaporator with the refrigerant leaving the evaporator circulated to an inlet of the liquid/vapor separator tank and not to an inlet of the condenser. The cooling circuit also has a pumped refrigerant economizer mode wherein the liquid pump is on and the compressor is off and bypassed with the refrigerant leaving the evaporator circulated to the inlet of the condenser and not to the inlet of the liquid/vapor separator tank.Type: ApplicationFiled: October 9, 2015Publication date: March 3, 2016Applicant: LIEBERT CORPORATIONInventors: Stephen Sillato, Timothy J. Schrader, Greg Haggy, Thomas Harvey, Zongtao Lu, John F. Judge
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Patent number: 9140475Abstract: A cooling system includes a cooling circuit having an evaporator, a condenser, a compressor, an expansion device, a liquid pump, and a receiver/surge tank coupled between the condenser and the liquid pump. The cooling system has a direct expansion mode and a pumped refrigerant economizer mode. When the cooling system switches from the direct expansion mode to the pumped refrigerant economizer mode, refrigerant is flushed from the refrigerant/surge tank so that the cooling circuit is overcharged when it begins operating in the pumped refrigerant economizer mode.Type: GrantFiled: November 13, 2013Date of Patent: September 22, 2015Assignee: Liebert CorporationInventors: Timothy J. Schrader, Greg Haggy, Stephen Sillato
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Publication number: 20150230367Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.Type: ApplicationFiled: April 22, 2015Publication date: August 13, 2015Applicant: Liebert CorporationInventors: John F. JUDGE, Timothy J. SCHRADER, Stephen SILLATO, Roger NOLL, Gary A. HELMINK, Pierpaolo BARBATO, Giuseppe Dalla MANA, Lou MONNIER, Zhiyong LIN, Benedict J. DOLCICH, Daniel J. SCHUTTE, Greg HAGGY
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Patent number: 9038404Abstract: A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.Type: GrantFiled: April 13, 2012Date of Patent: May 26, 2015Assignee: Liebert CorporationInventors: John F. Judge, Timothy J. Schrader, Stephen Sillato, Roger Noll, Gary A. Helmink, Pierpaolo Barbato, Giuseppe Dalla Mana, Lou Monnier, Zhiyong Lin, Benedict J. Dolcich, Daniel J. Schutte, Greg Haggy, Thomas Harvey, Zongtao Lu
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Publication number: 20140157821Abstract: A cooling system includes a cooling circuit having an evaporator, a condenser, a compressor, an expansion device, a liquid pump, and a receiver/surge tank coupled between the condenser and the liquid pump. The cooling system has a direct expansion mode and a pumped refrigerant economizer mode. When the cooling system switches from the direct expansion mode to the pumped refrigerant economizer mode, refrigerant is flushed from the refrigerant/surge tank so that the cooling circuit is overcharged when it begins operating in the pumped refrigerant economizer mode.Type: ApplicationFiled: November 13, 2013Publication date: June 12, 2014Inventors: Timothy J. SCHRADER, Greg HAGGY, Stephen SILLATO
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Load Estimator For Control Of Vapor Compression Cooling System With Pumped Refrigerant Economization
Publication number: 20140033753Abstract: A cooling system has a direct expansion mode and a pumped refrigerant economizer mode and a controller. The controller includes a load estimator that estimates real-time indoor load on the cooling system and uses the estimated real-time indoor load to determine whether to operate the cooling system in the pumped refrigerant economizer mode or in the direct expansion mode.Type: ApplicationFiled: October 4, 2013Publication date: February 6, 2014Inventors: Zongtao LU, Greg HAGGY, Timothy J. SCHRADER, Stephen SILLATO, John F. JUDGE -
Publication number: 20140007597Abstract: A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.Type: ApplicationFiled: December 21, 2012Publication date: January 9, 2014Applicant: LIEBERT CORPORATIONInventors: Thomas E. HARVEY, Stephen SILLATO
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Publication number: 20130139529Abstract: An air conditioner system including a condenser fan, an ambient temperature sensor, a refrigerant pressure sensor, and a controller. The ambient temperature sensor is to sense ambient temperature at the system. The refrigerant pressure sensor is to sense pressure of a refrigerant of the system. The target refrigerant pressure module is to identify an optimum pressure of the refrigerant in the system. The controller is to generate an output representing a speed of the condenser fan operable to maintain the pressure of the refrigerant at about the optimum pressure as the ambient temperature of the system changes.Type: ApplicationFiled: June 7, 2012Publication date: June 6, 2013Applicant: LIEBERT CORPORATIONInventors: Zongtao Lu, Jianping Li, Hongyu Zhang, Wanlai Lin, Stephen Sillato, Roger Noll, John F. Judge, Yizhou Fan, Craig Ward