Patents by Inventor Jason D. Scarcella
Jason D. Scarcella 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: 11885533Abstract: A refrigerant vapor compression system includes a compression device having at least a first compression stage and a second compression stage arranged in series refrigerant flow relationship. A first refrigerant heat rejection heat exchanger is disposed downstream with respect to refrigerant flow of the second compression stage. A first refrigerant intercooler is disposed intermediate the first compression stage and the second compression stage. The first refrigerant intercooler is disposed downstream of the first refrigerant heat rejection heat exchanger with respect to the flow of the first secondary fluid. An economizer includes a vapor line in fluid communication with a suction inlet to the second compression stage. A second refrigerant heat rejection heat exchanger is disposed intermediate with respect to refrigerant flow of the second compression stage and the first refrigerant heat rejection heat exchanger.Type: GrantFiled: May 12, 2020Date of Patent: January 30, 2024Assignee: Carrier CorporationInventors: Jianhua Zhou, Tobias H. Sienel, KeonWoo Lee, Jason D. Scarcella, Douglas Auyer, Ping Sue Vang, Bruce J. Poplawski
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Patent number: 11867466Abstract: A compact heat exchanger assembly for a refrigeration system includes a heat rejection heat exchanger assembly and a heat absorption heat exchanger assembly. The heat rejection heat exchanger assembly includes a primary heat exchanger and a secondary heat exchanger. The primary heat exchanger has a tube bank extending between a first manifold and a second manifold. The tube bank being provided with at least one bend such that the primary heat exchanger has a generally curvilinear shape. The secondary heat exchanger is disposed between the first manifold and the second manifold.Type: GrantFiled: November 4, 2019Date of Patent: January 9, 2024Assignee: CARRIER CORPORATIONInventors: Jianhua Zhou, Jason D. Scarcella, Tobias H. Sienel, Bruce J. Poplawski, KeonWoo Lee
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Patent number: 11441820Abstract: A method of mitigating refrigerant leaks within a refrigeration system that includes: detecting a leak of a refrigerant from a refrigeration system; closing a first valve to inhibit a fluid flow of the refrigerant between an evaporator and a condenser fluidly connected to the evaporator; and operating a compressor to direct another fluid flow of the refrigerant from the evaporator to the compressor.Type: GrantFiled: September 5, 2019Date of Patent: September 13, 2022Assignee: CARRIER CORPORATIONInventors: Paul V. Weyna, Jason D. Scarcella, Mark J. Perkovich, Lei Chen, Hai Tian
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Publication number: 20210278128Abstract: A ventilation system includes a leak sensor (52), a controller (56), and at least one of an injection port (70) and a vent door. The leak sensor (52) is disposed within an interior space of a refrigerated container (10) and is arranged to provide a signal indicative of a concentration of a refrigerant (18) within the interior space. The controller (56) is arranged to receive the signal. At least one of the injection port (70) and the vent door is disposed on at least one of a floor (30), a front wall (32), and a side wall (38) of the refrigerated container (10).Type: ApplicationFiled: May 13, 2019Publication date: September 9, 2021Inventors: Jason D. Scarcella, Kurt Handley
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Publication number: 20210268875Abstract: A method of mitigating refrigerant leaks within a refrigeration system that includes: detecting a leak of a refrigerant from a refrigeration system; closing a first valve to inhibit a fluid flow of the refrigerant between an evaporator and a condenser fluidly connected to the evaporator; and operating a compressor to direct another fluid flow of the refrigerant from the evaporator to the compressor.Type: ApplicationFiled: September 5, 2019Publication date: September 2, 2021Inventors: Paul V. WEYNA, Jason D. SCARCELLA, Mark J. PERKOVICH, Lei CHEN, Hai TIAN
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Publication number: 20210270533Abstract: A compact heat exchanger assembly for a refrigeration system includes a heat rejection heat exchanger assembly and a heat absorption heat exchanger assembly. The heat rejection heat exchanger assembly includes a primary heat exchanger and a secondary heat exchanger. The primary heat exchanger has a tube bank extending between a first manifold and a second manifold. The tube bank being provided with at least one bend such that the primary heat exchanger has a generally curvilinear shape. The secondary heat exchanger is disposed between the first manifold and the second manifold.Type: ApplicationFiled: November 4, 2019Publication date: September 2, 2021Inventors: Jianhua Zhou, Jason D. Scarcella, Tobias H. Sienel, Bruce J. Poplawski, KeonWoo Lee
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Publication number: 20210247109Abstract: A refrigerant vapor compression system includes a compression device having at least a first compression stage and a second compression stage arranged in series refrigerant flow relationship. A first refrigerant heat rejection heat exchanger is disposed downstream with respect to refrigerant flow of the second compression stage. A first refrigerant intercooler is disposed intermediate the first compression stage and the second compression stage. The first refrigerant intercooler is disposed downstream of the first refrigerant heat rejection heat exchanger with respect to the flow of the first secondary fluid. An economizer includes a vapor line in fluid communication with a suction inlet to the second compression stage. A second refrigerant heat rejection heat exchanger is disposed intermediate with respect to refrigerant flow of the second compression stage and the first refrigerant heat rejection heat exchanger.Type: ApplicationFiled: May 12, 2020Publication date: August 12, 2021Inventors: Jianhua Zhou, Tobias H. Sienel, KeonWoo Lee, Jason D. Scarcella, Douglas Auyer, Ping Sue Vang, Bruce J. Poplawski
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Publication number: 20210239366Abstract: A refrigerant vapor compression system comprising a plurality of components connected in a refrigerant flow circuit by a plurality of refrigerant lines, said components including: a compression device; a refrigerant heat rejection heat exchanger; a first expansion device; a refrigerant heat absorption heat exchanger; and a flash tank system having a first flash tank operably coupled to a second flash tank by a first connection, the flash tank system being disposed in the refrigerant flow circuit between the refrigerant heat rejection heat exchanger and the refrigerant heat absorption heat exchanger.Type: ApplicationFiled: January 12, 2021Publication date: August 5, 2021Inventors: Douglas R. Auyer, Jason D. Scarcella, KeonWoo Lee
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Publication number: 20190128568Abstract: A refrigeration system (30) comprises a compressor (36) for driving the refrigerant along a refrigerant flowpath (34) and having a first stage (36A) and a second stage (36B). A first heat exchanger (38) is along the refrigerant flowpath. An intercooler heat exchanger (120) is along the refrigerant flowpath. A second heat exchanger (42) is along the refrigerant flowpath. An additional heat exchanger (170) is along the refrigerant flowpath between the compressor second stage and the first heat exchanger.Type: ApplicationFiled: April 24, 2017Publication date: May 2, 2019Applicant: Carrier CorporationInventors: Jason D. Scarcella, Thomas J. Benedict
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Patent number: 9494352Abstract: A suction modulation valve is throttled when conditions in a refrigerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at start-up, among other conditions. Throttling the suction modulation valve reduces the amount of refrigerant reaching the compressor and thus ensures that any liquid refrigerant would be likely “boiled off” before raising any problems in the compressor. Other control steps can also be performed to alleviate flooded compressor operation with liquid refrigerant. Such steps, for example, can include actuating heaters, discharge valve throttling, by-passing refrigerant from an intermediate compression point back to suction, controlling the speed of the condenser fan can be performed independently or in combination including the suction modulation valve throttling.Type: GrantFiled: July 31, 2006Date of Patent: November 15, 2016Assignee: Carrier CorporationInventors: Alexander Lifson, Jason D. Scarcella
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Patent number: 8109102Abstract: A refrigerant system includes a compressor that has safe operating limits that are also built into a refrigerant system control to protect the compressor. Under certain conditions, these safe operational limits may be changed to allow the compressor to operate beyond the safety limits at least for a period of time.Type: GrantFiled: May 9, 2007Date of Patent: February 7, 2012Assignee: Carrier CorporationInventors: Alexander Lifson, Michael F. Taras, Jason D. Scarcella
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Publication number: 20100101247Abstract: A refrigerant system includes a compressor that has safe operating limits that are also built into a refrigerant system control to protect the compressor. Under certain conditions, these safe operational limits may be changed to allow the compressor to operate beyond the safety limits at least for a period of time.Type: ApplicationFiled: May 9, 2007Publication date: April 29, 2010Inventors: Alexander Lifson, Michael F. Taras, Jason D. Scarcella
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Publication number: 20090013701Abstract: A suction modulation valve is throttled when conditions in a refrigerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at start-up, among other conditions. Throttling the suction modulation valve reduces the amount of refrigerant reaching the compressor and thus ensures that any liquid refrigerant would be likely “boiled off” before raising any problems in the compressor. Other control steps can also be performed to alleviate flooded compressor operation with liquid refrigerant. Such steps, for example, can consist of: actuating heaters, discharge valve throttling, by-passing refrigerant from intermediate compression point back to suction, controlling the speed of the condenser fan can be performed independently or in combination including the suction modulation valve throttling.Type: ApplicationFiled: July 31, 2006Publication date: January 15, 2009Inventors: Alexander Lifson, Jason D. Scarcella
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Patent number: 7104076Abstract: A control algorithm is developed which takes corrective action in the event that system conditions indicate there may be an inadequate flow of lubricant in the system. In particular, if a discharge pressure is below a predetermined amount or if the suction modulation valve is throttled, there is a possibility of inadequate lubricant flow. The system control then turns off the condenser fan, and if that first step is not sufficient, may also turn on an evaporator heater and then control a suction modulation valve. A fail safe control loop also takes effect if the condition sensor appears to have failed.Type: GrantFiled: June 24, 2004Date of Patent: September 12, 2006Assignee: Carrier CorporationInventors: Jason D. Scarcella, Alexander Lifson